284 results on '"OBrien, P"'
Search Results
2. Race/ethnicity and socioeconomic status as predictors of outcome following family therapy in youth at clinical high risk for psychosis.
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Ruiz-Yu, Bernalyn, Le, Thanh, Weintraub, Marc, Zinberg, Jamie, Addington, Jean, OBrien, Mary, Walsh, Barbara, Friedman-Yakoobian, Michelle, Auther, Andrea, Domingues, Isabel, Cannon, Tyrone, Miklowitz, David, and Bearden, Carrie
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clinical high risk ,family therapy ,parental education ,psychosis ,race/ethnicity ,Humans ,Male ,Female ,Psychotic Disorders ,Adolescent ,Family Therapy ,Social Class ,Treatment Outcome ,Young Adult - Abstract
AIM: There is limited research on the effects of sociodemographic and socioeconomic factors on treatment outcomes in youth at clinical high risk for psychosis (CHRp). This study examined sociodemographic factors that may affect functional outcomes within this population. Specifically, we investigated the influence of race/ethnicity (dichotomized as non-Hispanic whites [NHW] vs. people of colour [POC]), socioeconomic status (SES; operationalized as parental years of education), and their interaction on change in psychosocial functioning and symptoms over 6 months in a randomized trial of family-focused therapy. METHODS: CHRp youth (N = 128) participated in a randomized trial of family therapy (18 sessions of family therapy vs. 3 sessions of family psychoeducation). Sixty-four participants who self-identified as POC and 64 self-identified NHW participants completed baseline and 6-month follow-up measures of positive and negative symptoms and psychosocial (global, role, and social) functioning. Multiple regression models were conducted to test the main effect of race/ethnicity on changes in positive and negative symptoms and functioning, and whether this effect was moderated by parental education. RESULTS: There was a significant interaction between race/ethnicity and parental education, such that higher parental education was associated with greater improvement in global functioning in NHW participants, but there was no relationship between parental education and global functioning in POC. Additionally, higher parental education was associated with a decrease in negative symptoms in NHW participants but not in POC. There were no significant effects of race/ethnicity or parental education on positive symptoms, nor on social or role functioning. CONCLUSIONS: Clinicians may consider tailoring psychosocial treatments according to the needs of diverse families who vary in sociodemographic factors such as educational attainment and race/ethnicity.
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- 2024
3. Assessment of Spillover of Antimicrobial Resistance to Untreated Children 7-12 Years Old After Mass Drug Administration of Azithromycin for Child Survival in Niger: A Secondary Analysis of the MORDOR Cluster-Randomized Trial.
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Peterson, Brittany, Arzika, Ahmed, Amza, Abdou, Maliki, Ramatou, Karamba, Alio, Moussa, Mariama, Kemago, Mariama, Liu, Zijun, Houpt, Eric, Liu, Jie, Pholwat, Suporn, Doan, Thuy, Porco, Travis, Keenan, Jeremy, Lietman, Thomas, and OBrien, Kieran
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Niger ,antimicrobial resistance ,azithromycin ,mass drug administration ,spillover ,Humans ,Azithromycin ,Child ,Anti-Bacterial Agents ,Mass Drug Administration ,Female ,Male ,Niger ,Drug Resistance ,Bacterial ,Child Mortality ,Child ,Preschool ,Infant ,Nasopharynx ,Macrolides - Abstract
BACKGROUND: The risk of antibiotic resistance is complicated by the potential for spillover effects from one treated population to another. Azithromycin mass drug administration programs report higher rates of antibiotic resistance among treatment arms in targeted groups. This study aimed to understand the risk of spillover of antibiotic resistance to nontarget groups in these programs. METHODS: Data were used from a cluster-randomized trial comparing the effects of biannual azithromycin and placebo distribution to children 1-59 months old on child mortality rates. Nasopharyngeal samples from untreated children 7-12 years old were tested for genetic determinants of macrolide resistance (primary outcome) and resistance to other antibiotic classes (secondary outcomes). Linear regression was used to compare the community-level mean difference in prevalence by arm at the 24-month time point, adjusting for baseline prevalence. RESULTS: A total of 1103 children 7-12 years old in 30 communities were included in the analysis (15 azithromycin, 15 placebo). The adjusted mean differences in the prevalence of resistance determinants for macrolides, β-lactams, and tetracyclines were 3.4% (95% confidence interval, -4.1% to 10.8%; P = .37), -1.2% (-7.9% to 5.5%; P = .72), and -3.3% (-9.5% to 2.8%; P = .61), respectively. CONCLUSIONS: We were unable to demonstrate a statistically significant increase in macrolide resistance determinants in untreated groups in an azithromycin mass drug administration program. While the result might be consistent with a small spillover effect, this study was not powered to detect such a small difference. Larger studies are warranted to better quantify the potential for spillover effects within these programs.
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- 2024
4. A Phase 1 First-in-Human Study of the MCL-1 Inhibitor AZD5991 in Patients with Relapsed/Refractory Hematologic Malignancies.
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Desai, Pinkal, Lonial, Sagar, Cashen, Amanda, Kamdar, Manali, Flinn, Ian, OBrien, Susan, Garcia, Jacqueline, Korde, Neha, Moslehi, Javid, Wey, Margaret, Cheung, Patricia, Sharma, Shringi, Olabode, Damilola, Chen, Hong, Ali Syed, Firasath, Liu, Mary, Saeh, Jamal, Andrade-Campos, Marcio, Kadia, Tapan, and Blachly, James
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Humans ,Male ,Middle Aged ,Female ,Aged ,Hematologic Neoplasms ,Adult ,Aged ,80 and over ,Myeloid Cell Leukemia Sequence 1 Protein ,Maximum Tolerated Dose ,Bridged Bicyclo Compounds ,Heterocyclic ,Neoplasm Recurrence ,Local ,Antineoplastic Combined Chemotherapy Protocols ,Sulfonamides ,Treatment Outcome ,Drug Resistance ,Neoplasm ,Leukemia ,Myeloid ,Acute ,Myelodysplastic Syndromes ,Acrylamides ,Aniline Compounds ,Indoles ,Pyrimidines - Abstract
PURPOSE: AZD5991, a human MCL-1 inhibitor, was assessed for safety, tolerability, pharmacokinetics, and antitumor activity as monotherapy and in combination with venetoclax in patients with relapsed or refractory hematologic malignancies. PATIENTS AND METHODS: In the monotherapy cohort (n = 61), patients with hematologic malignancies received AZD5991 intravenously in escalating doses either once or twice weekly, following intrapatient dose escalation, during a 3-week cycle. In the combination cohort (n = 17), patients with acute myeloid leukemia and myelodysplastic syndrome received escalating doses of AZD5991 and venetoclax during either a 3- or 4-week cycle. Primary objectives were safety and maximum tolerated dose; secondary objectives included plasma pharmacokinetics and antitumor activity. RESULTS: The most common (≥30%) adverse events were diarrhea (59.0%), nausea (55.1%), and vomiting (47.4%). Four deaths occurred because of adverse events: cardiac arrest, sepsis, tumor lysis syndrome, and acute respiratory failure; only tumor lysis syndrome was related to AZD5991. Dose-limiting toxicities occurred in five patients. Three patients with myelodysplastic syndrome achieved an objective response: one marrow complete remission without hematologic improvement, one partial remission with AZD5991 monotherapy, and one marrow complete remission with AZD5991 + venetoclax. Asymptomatic elevations of troponin I or T were observed in eight (10.3%) patients. Post hoc retrospective analysis revealed elevated troponin T in 14/31 patients before any AZD5991 dose and in 54/65 patients after any AZD5991 dose at or after Cycle 1. No associations were found between elevated troponin and cardiovascular risk factors. CONCLUSIONS: Treatment with AZD5991 was associated with high incidence of laboratory troponin elevation and a low overall response rate.
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- 2024
5. Huge Ensembles Part I: Design of Ensemble Weather Forecasts using Spherical Fourier Neural Operators
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Mahesh, Ankur, Collins, William, Bonev, Boris, Brenowitz, Noah, Cohen, Yair, Elms, Joshua, Harrington, Peter, Kashinath, Karthik, Kurth, Thorsten, North, Joshua, OBrien, Travis, Pritchard, Michael, Pruitt, David, Risser, Mark, Subramanian, Shashank, and Willard, Jared
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Physics - Atmospheric and Oceanic Physics ,Computer Science - Machine Learning - Abstract
Studying low-likelihood high-impact extreme weather events in a warming world is a significant and challenging task for current ensemble forecasting systems. While these systems presently use up to 100 members, larger ensembles could enrich the sampling of internal variability. They may capture the long tails associated with climate hazards better than traditional ensemble sizes. Due to computational constraints, it is infeasible to generate huge ensembles (comprised of 1,000-10,000 members) with traditional, physics-based numerical models. In this two-part paper, we replace traditional numerical simulations with machine learning (ML) to generate hindcasts of huge ensembles. In Part I, we construct an ensemble weather forecasting system based on Spherical Fourier Neural Operators (SFNO), and we discuss important design decisions for constructing such an ensemble. The ensemble represents model uncertainty through perturbed-parameter techniques, and it represents initial condition uncertainty through bred vectors, which sample the fastest growing modes of the forecast. Using the European Centre for Medium-Range Weather Forecasts Integrated Forecasting System (IFS) as a baseline, we develop an evaluation pipeline composed of mean, spectral, and extreme diagnostics. Using large-scale, distributed SFNOs with 1.1 billion learned parameters, we achieve calibrated probabilistic forecasts. As the trajectories of the individual members diverge, the ML ensemble mean spectra degrade with lead time, consistent with physical expectations. However, the individual ensemble members' spectra stay constant with lead time. Therefore, these members simulate realistic weather states, and the ML ensemble thus passes a crucial spectral test in the literature. The IFS and ML ensembles have similar Extreme Forecast Indices, and we show that the ML extreme weather forecasts are reliable and discriminating.
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- 2024
6. Huge Ensembles Part II: Properties of a Huge Ensemble of Hindcasts Generated with Spherical Fourier Neural Operators
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Mahesh, Ankur, Collins, William, Bonev, Boris, Brenowitz, Noah, Cohen, Yair, Harrington, Peter, Kashinath, Karthik, Kurth, Thorsten, North, Joshua, OBrien, Travis, Pritchard, Michael, Pruitt, David, Risser, Mark, Subramanian, Shashank, and Willard, Jared
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Computer Science - Machine Learning ,Physics - Atmospheric and Oceanic Physics - Abstract
In Part I, we created an ensemble based on Spherical Fourier Neural Operators. As initial condition perturbations, we used bred vectors, and as model perturbations, we used multiple checkpoints trained independently from scratch. Based on diagnostics that assess the ensemble's physical fidelity, our ensemble has comparable performance to operational weather forecasting systems. However, it requires several orders of magnitude fewer computational resources. Here in Part II, we generate a huge ensemble (HENS), with 7,424 members initialized each day of summer 2023. We enumerate the technical requirements for running huge ensembles at this scale. HENS precisely samples the tails of the forecast distribution and presents a detailed sampling of internal variability. For extreme climate statistics, HENS samples events 4$\sigma$ away from the ensemble mean. At each grid cell, HENS improves the skill of the most accurate ensemble member and enhances coverage of possible future trajectories. As a weather forecasting model, HENS issues extreme weather forecasts with better uncertainty quantification. It also reduces the probability of outlier events, in which the verification value lies outside the ensemble forecast distribution.
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- 2024
7. Self-administered mindfulness interventions reduce stress in a large, randomized controlled multi-site study.
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Sparacio, Alessandro, IJzerman, Hans, Ropovik, Ivan, Giorgini, Filippo, Spiessens, Christoph, Uchino, Bert, Landvatter, Joshua, Tacana, Tracey, Diller, Sandra, Derrick, Jaye, Segundo, Joahana, Pierce, Jace, Ross, Robert, Francis, Zoë, LaBoucane, Amanda, Ma-Kellams, Christine, Ford, Maire, Schmidt, Kathleen, Wong, Celia, Higgins, Wendy, Stone, Bryant, Stanley, Samantha, Ribeiro, Gianni, Fuglestad, Paul, Jaklin, Valerie, Kübler, Andrea, Ziebell, Philipp, Jewell, Crystal, Kovas, Yulia, Allahghadri, Mahnoosh, Fransham, Charlotte, Baranski, Michael, Burgess, Hannah, Benz, Annika, DeSousa, Maysa, Nylin, Catherine, Brooks, Janae, Goldsmith, Caitlyn, Benson, Jessica, Griffin, Siobhán, Dunne, Stephen, Davis, William, Watermeyer, Tam, Meese, William, Howell, Jennifer, Standiford Reyes, Laurel, Strickland, Megan, Dickerson, Sally, Pescatore, Samantha, Skakoon-Sparling, Shayna, Wunder, Zachary, Day, Martin, Brenton, Shawna, Linden, Audrey, Hawk, Christopher, OBrien, Léan, Urgyen, Tenzin, McDonald, Jennifer, van der Schans, Kim, Blocker, Heidi, Ng Tseung-Wong, Caroline, and Jiga-Boy, Gabriela
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Humans ,Mindfulness ,Female ,Male ,Adult ,Stress ,Psychological ,Young Adult ,Adolescent ,Bayes Theorem - Abstract
Mindfulness witnessed a substantial popularity surge in the past decade, especially as digitally self-administered interventions became available at relatively low costs. Yet, it is uncertain whether they effectively help reduce stress. In a preregistered (OSF https://doi.org/10.17605/OSF.IO/UF4JZ ; retrospective registration at ClinicalTrials.gov NCT06308744 ) multi-site study (nsites = 37, nparticipants = 2,239, 70.4% women, Mage = 22.4, s.d.age = 10.1, all fluent English speakers), we experimentally tested whether four single, standalone mindfulness exercises effectively reduced stress, using Bayesian mixed-effects models. All exercises proved to be more efficacious than the active control. We observed a mean difference of 0.27 (d = -0.56; 95% confidence interval, -0.43 to -0.69) between the control condition (M = 1.95, s.d. = 0.50) and the condition with the largest stress reduction (body scan: M = 1.68, s.d. = 0.46). Our findings suggest that mindfulness may be beneficial for reducing self-reported short-term stress for English speakers from higher-income countries.
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- 2024
8. Inactive Overhang in Silicon Anodes
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OBrien, Aidin I., Trask, Stephen E., Salpekar, Devashish, Son, Seoung-Bum, Dunlop, Alison R., Veith, Gabriel M., Lu, Wenquan, Ingram, Brian J., Abraham, Daniel P., Jansen, Andrew N., and Rodrigues, Marco-Tulio F.
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Physics - Chemical Physics - Abstract
Li-ion batteries contain excess anode area to improve manufacturability and prevent Li plating. These overhang areas in graphite electrodes are active but experience decreased Li+ flux during cycling. Over time, the overhang and the anode portions directly opposite to the cathode can exchange Li+, driven by differences in local electrical potential across the electrode, which artificially inflates or decreases the measured cell capacity. Here, we show that lithiation of the overhang is less likely to happen in silicon anodes paired with layered oxide cathodes. The large voltage hysteresis of silicon creates a lower driving force for Li+ exchange as lithium ions transit into the overhang, rendering this exchange highly inefficient. For crystalline Si particles, Li+ storage at the overhang is prohibitive, because the low potential required for the initial lithiation can act as thermodynamic barrier for this exchange. We use micro-Raman spectroscopy to demonstrate that crystalline Si particles at the overhang are never lithiated even after cell storage at 45 oC for four months. Since the anode overhang can affect the forecasting of cell life, cells using silicon anodes may require different methodologies for life estimation compared to those used for traditional graphite-based Li-ion batteries.
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- 2024
- Full Text
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9. Perivascular space Identification Nnunet for Generalised Usage (PINGU)
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Sinclair, Benjamin, Vivash, Lucy, Moses, Jasmine, Lynch, Miranda, Pham, William, Dorfman, Karina, Marotta, Cassandra, Koh, Shaun, Bunyamin, Jacob, Rowsthorn, Ella, Jarema, Alex, Peiris, Himashi, Chen, Zhaolin, Shultz, Sandy R, Wright, David K, Kong, Dexiao, Naismith, Sharon L., OBrien, Terence J., and Law, Meng
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Computer Science - Computer Vision and Pattern Recognition ,Computer Science - Artificial Intelligence - Abstract
Perivascular spaces(PVSs) form a central component of the brain\'s waste clearance system, the glymphatic system. These structures are visible on MRI images, and their morphology is associated with aging and neurological disease. Manual quantification of PVS is time consuming and subjective. Numerous deep learning methods for PVS segmentation have been developed, however the majority have been developed and evaluated on homogenous datasets and high resolution scans, perhaps limiting their applicability for the wide range of image qualities acquired in clinic and research. In this work we train a nnUNet, a top-performing biomedical image segmentation algorithm, on a heterogenous training sample of manually segmented MRI images of a range of different qualities and resolutions from 6 different datasets. These are compared to publicly available deep learning methods for 3D segmentation of PVS. The resulting model, PINGU (Perivascular space Identification Nnunet for Generalised Usage), achieved voxel and cluster level dice scores of 0.50(SD=0.15), 0.63(0.17) in the white matter(WM), and 0.54(0.11), 0.66(0.17) in the basal ganglia(BG). Performance on data from unseen sites was substantially lower for both PINGU(0.20-0.38(WM, voxel), 0.29-0.58(WM, cluster), 0.22-0.36(BG, voxel), 0.46-0.60(BG, cluster)) and the publicly available algorithms(0.18-0.30(WM, voxel), 0.29-0.38(WM cluster), 0.10-0.20(BG, voxel), 0.15-0.37(BG, cluster)), but PINGU strongly outperformed the publicly available algorithms, particularly in the BG. Finally, training PINGU on manual segmentations from a single site with homogenous scan properties gave marginally lower performances on internal cross-validation, but in some cases gave higher performance on external validation. PINGU stands out as broad-use PVS segmentation tool, with particular strength in the BG, an area of PVS related to vascular disease and pathology.
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- 2024
10. Data-Driven Evidence-Based Syntactic Sugar Design
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OBrien, David, Dyer, Robert, Nguyen, Tien N., and Rajan, Hridesh
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Computer Science - Software Engineering - Abstract
Programming languages are essential tools for developers, and their evolution plays a crucial role in supporting the activities of developers. One instance of programming language evolution is the introduction of syntactic sugars, which are additional syntax elements that provide alternative, more readable code constructs. However, the process of designing and evolving a programming language has traditionally been guided by anecdotal experiences and intuition. Recent advances in tools and methodologies for mining open-source repositories have enabled developers to make data-driven software engineering decisions. In light of this, this paper proposes an approach for motivating data-driven programming evolution by applying frequent subgraph mining techniques to a large dataset of 166,827,154 open-source Java methods. The dataset is mined by generalizing Java control-flow graphs to capture broad programming language usages and instances of duplication. Frequent subgraphs are then extracted to identify potentially impactful opportunities for new syntactic sugars. Our diverse results demonstrate the benefits of the proposed technique by identifying new syntactic sugars involving a variety of programming constructs that could be implemented in Java, thus simplifying frequent code idioms. This approach can potentially provide valuable insights for Java language designers, and serve as a proof-of-concept for data-driven programming language design and evolution., Comment: 12 pages, 12 figures, to be published in ICSE'24
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- 2024
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11. Verbal Learning and Memory Deficits across Neurological and Neuropsychiatric Disorders: Insights from an ENIGMA Mega Analysis.
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Kennedy, Eamonn, Liebel, Spencer, Lindsey, Hannah, Vadlamani, Shashank, Lei, Pui-Wa, Adamson, Maheen, Alda, Martin, Alonso-Lana, Silvia, Anderson, Tim, Arango, Celso, Asarnow, Robert, Avram, Mihai, Ayesa-Arriola, Rosa, Babikian, Talin, Banaj, Nerisa, Bird, Laura, Borgwardt, Stefan, Brodtmann, Amy, Brosch, Katharina, Caeyenberghs, Karen, Calhoun, Vince, Chiaravalloti, Nancy, Cifu, David, Crespo-Facorro, Benedicto, Dalrymple-Alford, John, Dams-OConnor, Kristen, Dannlowski, Udo, Darby, David, Davenport, Nicholas, DeLuca, John, Diaz-Caneja, Covadonga, Disner, Seth, Dobryakova, Ekaterina, Ehrlich, Stefan, Esopenko, Carrie, Ferrarelli, Fabio, Frank, Lea, Franz, Carol, Fuentes-Claramonte, Paola, Genova, Helen, Giza, Christopher, Goltermann, Janik, Grotegerd, Dominik, Gruber, Marius, Gutierrez-Zotes, Alfonso, Ha, Minji, Haavik, Jan, Hinkin, Charles, Hoskinson, Kristen, Hubl, Daniela, Irimia, Andrei, Jansen, Andreas, Kaess, Michael, Kang, Xiaojian, Kenney, Kimbra, Keřková, Barbora, Khlif, Mohamed, Kim, Minah, Kindler, Jochen, Kircher, Tilo, Knížková, Karolina, Kolskår, Knut, Krch, Denise, Kremen, William, Kuhn, Taylor, Kumari, Veena, Kwon, Junsoo, Langella, Roberto, Laskowitz, Sarah, Lee, Jungha, Lengenfelder, Jean, Liou-Johnson, Victoria, Lippa, Sara, Løvstad, Marianne, Lundervold, Astri, Marotta, Cassandra, Marquardt, Craig, Mattos, Paulo, Mayeli, Ahmad, McDonald, Carrie, Meinert, Susanne, Melzer, Tracy, Merchán-Naranjo, Jessica, Michel, Chantal, Morey, Rajendra, Mwangi, Benson, Myall, Daniel, Nenadić, Igor, Newsome, Mary, Nunes, Abraham, OBrien, Terence, Oertel, Viola, Ollinger, John, Olsen, Alexander, Ortiz García de la Foz, Victor, Ozmen, Mustafa, Pardoe, Heath, Parent, Marise, Piras, Fabrizio, and Piras, Federica
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Parkinson’s disease ,attention-deficit/hyperactivity disorder ,bipolar disorder ,dementia ,depression ,memory ,schizophrenia ,stroke ,traumatic brain injury ,verbal learning - Abstract
Deficits in memory performance have been linked to a wide range of neurological and neuropsychiatric conditions. While many studies have assessed the memory impacts of individual conditions, this study considers a broader perspective by evaluating how memory recall is differentially associated with nine common neuropsychiatric conditions using data drawn from 55 international studies, aggregating 15,883 unique participants aged 15-90. The effects of dementia, mild cognitive impairment, Parkinsons disease, traumatic brain injury, stroke, depression, attention-deficit/hyperactivity disorder (ADHD), schizophrenia, and bipolar disorder on immediate, short-, and long-delay verbal learning and memory (VLM) scores were estimated relative to matched healthy individuals. Random forest models identified age, years of education, and site as important VLM covariates. A Bayesian harmonization approach was used to isolate and remove site effects. Regression estimated the adjusted association of each clinical group with VLM scores. Memory deficits were strongly associated with dementia and schizophrenia (p < 0.001), while neither depression nor ADHD showed consistent associations with VLM scores (p > 0.05). Differences associated with clinical conditions were larger for longer delayed recall duration items. By comparing VLM across clinical conditions, this study provides a foundation for enhanced diagnostic precision and offers new insights into disease management of comorbid disorders.
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- 2024
12. Association of leukemic molecular profile with efficacy of inotuzumab ozogamicin in adults with relapsed/refractory ALL.
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Zhao, Yaqi, Laird, A, Roberts, Kathryn, Yafawi, Rolla, Kantarjian, Hagop, DeAngelo, Daniel, Stelljes, Matthias, Liedtke, Michaela, Stock, Wendy, Gökbuget, Nicola, OBrien, Susan, Jabbour, Elias, Cassaday, Ryan, Loyd, Melanie, Olsen, Scott, Neale, Geoffrey, Liu, Xueli, Vandendries, Erik, Advani, Anjali, and Mullighan, Charles
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Humans ,Inotuzumab Ozogamicin ,Precursor Cell Lymphoblastic Leukemia-Lymphoma ,Adult ,Female ,Male ,Middle Aged ,Treatment Outcome ,Aged ,Recurrence ,Antineoplastic Agents ,Immunological ,Young Adult ,Drug Resistance ,Neoplasm ,Adolescent - Abstract
The phase 3 INO-VATE trial demonstrated higher rates of remission, measurable residual disease negativity, and improved overall survival for patients with relapsed/refractory (R/R) acute lymphoblastic leukemia (ALL) who received inotuzumab ozogamicin (InO) vs standard-of-care chemotherapy (SC). Here, we examined associations between genomic alterations and the efficacy of InO. Of 326 randomized patients, 91 (InO, n = 43; SC, n = 48) had samples evaluable for genomic analysis. The spectrum of gene fusions and other genomic alterations observed was comparable with prior studies of adult ALL. Responses to InO were observed in all leukemic subtypes, genomic alterations, and risk groups. Significantly higher rates of complete remission (CR)/CR with incomplete count recovery were observed with InO vs SC in patients with BCR::ABL1-like ALL (85.7% [6/7] vs 0% [0/5]; P = .0076), with TP53 alterations (100% [5/5] vs 12.5% [1/8]; P = .0047), and in the high-risk BCR::ABL1- (BCR::ABL1-like, low-hypodiploid, KMT2A-rearranged) group (83.3% [10/12] vs 10.5% [2/19]; P < .0001). This retrospective, exploratory analysis of the INO-VATE trial demonstrated potential for benefit with InO for patients with R/R ALL across leukemic subtypes, including BCR::ABL1-like ALL, and for those bearing diverse genomic alterations. Further confirmation of the efficacy of InO in patients with R/R ALL exhibiting the BCR::ABL1-like subtype or harboring TP53 alterations is warranted. This trial was registered at www.ClinicalTrials.gov as #NCT01564784.
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- 2024
13. Seven Practical Recommendations for Designing and Conducting Qualitative Research in Medical Education.
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Lyons, Patrick, Gause, Sherie, Eakin, Michelle, OBrien, Bridget, and Santhosh, Lekshmi
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methods ,qualitative ,research design - Abstract
Qualitative research seeks to provide context, nuance, and depth of understanding in regard to systems, behaviors, and/or lived experiences. As such, it plays a key role in many areas of medical education. Composed of myriad methods and methodologies, each of which may be valuable for some areas of inquiry but less so for others, qualitative research can be challenging to design, conduct, and report. This challenge can be conceptualized as ensuring that the study design, conduct, and reporting are fit for purpose, following directly from a well-formulated research question. In this Perspective, we share seven important and practical recommendations to enhance the design and conduct of high-quality qualitative research in medical education: 1) craft a strong research question, 2) link the study design to this question, 3) assemble a team with diverse expertise, 4) prioritize information power when selecting recruitment and sampling strategies, 5) collect data carefully, 6) rigorously analyze data, and 7) disseminate results that tell a complete story.
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- 2024
14. Acute pulmonary injury in hematology patients supported with pathogen-reduced and conventional platelet components.
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Wheeler, Allison, Snyder, Edward, Refaai, Majed, Cohn, Claudia, Poisson, Jessica, Fontaine, Magali, Sehl, Mary, Nooka, Ajay, Uhl, Lynne, Spinella, Philip, Fenelus, Maly, Liles, Darla, Coyle, Thomas, Becker, Joanne, Jeng, Michael, Gehrie, Eric, Spencer, Bryan, Young, Pampee, Johnson, Andrew, OBrien, Jennifer, Schiller, Gary, Roback, John, Malynn, Elizabeth, Jackups, Ronald, Avecilla, Scott, Liu, Kathy, Bentow, Stanley, Varrone, Jeanne, Benjamin, Richard, and Corash, Laurence
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Humans ,Platelet Transfusion ,Female ,Middle Aged ,Male ,Aged ,Acute Lung Injury ,Blood Platelets ,Prospective Studies ,Adult ,Thrombocytopenia ,Hematologic Diseases - Abstract
Patients treated with antineoplastic therapy often develop thrombocytopenia requiring platelet transfusion, which has potential to exacerbate pulmonary injury. This study tested the hypothesis that amotosalen-UVA pathogen-reduced platelet components (PRPCs) do not potentiate pulmonary dysfunction compared with conventional platelet components (CPCs). A prospective, multicenter, open-label, sequential cohort study evaluated the incidence of treatment-emergent assisted mechanical ventilation initiated for pulmonary dysfunction (TEAMV-PD). The first cohort received CPC. After the CPC cohort, each site enrolled a second cohort transfused with PRPC. Other outcomes included clinically significant pulmonary adverse events (CSPAE) and the incidence of treatment-emergent acute respiratory distress syndrome (TEARDS) diagnosed by blinded expert adjudication. The incidence of TEAMV-PD in all patients (1068 PRPC and 1223 CPC) was less for PRPC (1.7 %) than CPC (3.1%) with a treatment difference of -1.5% (95% confidence interval [CI], -2.7 to -0.2). In patients requiring ≥2 PCs, the incidence of TEAMV-PD was reduced for PRPC recipients compared with CPC recipients (treatment difference, -2.4%; 95% CI, -4.2 to -0.6). CSPAE increased with increasing PC exposure but were not significantly different between the cohorts. For patients receiving ≥2 platelet transfusions, TEARDS occurred in 1.3% PRPC and 2.6% CPC recipients (P = .086). Bayesian analysis demonstrated PRPC may be superior in reducing TEAMV-PD and TEARDS for platelet transfusion recipients compared with CPC recipients, with 99.2% and 88.8% probability, respectively. In this study, PRPC compared with CPC demonstrated high probability of reduced severe pulmonary injury requiring assisted mechanical ventilation in patients with hematology disorders dependent on platelet transfusion. This trial was registered at www.ClinicalTrials.gov as #NCT02549222.
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- 2024
15. The extracellular matrix differentially directs myoblast motility and differentiation in distinct forms of muscular dystrophy: Dystrophic matrices alter myoblast motility.
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Long, Ashlee, Kwon, Jason, Lee, GaHyun, Reiser, Nina, Vaught, Lauren, OBrien, Joseph, Page, Patrick, Hadhazy, Michele, Demonbreun, Alexis, McNally, Elizabeth, Crosbie, Rachelle, and Reynolds, Joseph
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Annexin ,Duchenne muscular dystrophy ,Dysferlin ,Extracellular matrix ,Limb girdle muscular dystrophy ,Muscle ,Myoblast ,Animals ,Myoblasts ,Extracellular Matrix ,Mice ,Cell Differentiation ,Sarcoglycans ,Cell Movement ,Dysferlin ,Muscular Dystrophies ,Dystrophin ,Annexin A2 ,Decorin ,Cell Line ,Disease Models ,Animal ,Muscle ,Skeletal - Abstract
Extracellular matrix (ECM) pathologic remodeling underlies many disorders, including muscular dystrophy. Tissue decellularization removes cellular components while leaving behind ECM components. We generated on-slide decellularized tissue slices from genetically distinct dystrophic mouse models. The ECM of dystrophin- and sarcoglycan-deficient muscles had marked thrombospondin 4 deposition, while dysferlin-deficient muscle had excess decorin. Annexins A2 and A6 were present on all dystrophic decellularized ECMs, but annexin matrix deposition was excessive in dysferlin-deficient muscular dystrophy. Muscle-directed viral expression of annexin A6 resulted in annexin A6 in the ECM. C2C12 myoblasts seeded onto decellularized matrices displayed differential myoblast mobility and fusion. Dystrophin-deficient decellularized matrices inhibited myoblast mobility, while dysferlin-deficient decellularized matrices enhanced myoblast movement and differentiation. Myoblasts treated with recombinant annexin A6 increased mobility and fusion like that seen on dysferlin-deficient decellularized matrix and demonstrated upregulation of ECM and muscle cell differentiation genes. These findings demonstrate specific fibrotic signatures elicit effects on myoblast activity.
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- 2024
16. Prolonged mass azithromycin distributions and macrolide resistance determinants among preschool children in Niger: A sub-study of a cluster-randomized trial (MORDOR).
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Arzika, Ahmed, Abdou, Amza, Maliki, Ramatou, Beido, Nassirou, Kadri, Boubacar, Harouna, Abdoul, Galo, Abdoul, Alio, Mankara, Lebas, Elodie, Oldenburg, Catherine, OBrien, Kieran, Chen, Cindi, Zhong, Lina, Zhou, Zhaoxia, Yan, Daisy, Hinterwirth, Armin, Doan, Thuy, Porco, Travis, Keenan, Jeremy, and Lietman, Thomas
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Humans ,Azithromycin ,Niger ,Child ,Preschool ,Anti-Bacterial Agents ,Infant ,Female ,Drug Resistance ,Bacterial ,Male ,Macrolides ,Mass Drug Administration ,Child Mortality - Abstract
BACKGROUND: Randomized controlled trials found that twice-yearly mass azithromycin administration (MDA) reduces childhood mortality, presumably by reducing infection burden. World Health Organization (WHO) issued conditional guidelines for mass azithromycin administration in high-mortality settings in sub-Saharan Africa given concerns for antibiotic resistance. While prolonged twice-yearly MDA has been shown to increase antibiotic resistance in small randomized controlled trials, the objective of this study was to determine if macrolide and non-macrolide resistance in the gut increases with the duration of azithromycin MDA in a larger setting. METHODS AND FINDINGS: The Macrolide Oraux pour Réduire les Décès avec un Oeil sur la Résistance (MORDOR) study was conducted in Niger from December 2014 to June 2020. It was a cluster-randomized trial of azithromycin (A) versus placebo (P) aimed at evaluating childhood mortality. This is a sub-study in the MORDOR trial to track changes in antibiotic resistance after prolonged azithromycin MDA. A total of 594 communities were eligible. Children 1 to 59 months in 163 randomly chosen communities were eligible to receive treatment and included in resistance monitoring. Participants, staff, and investigators were masked to treatment allocation. At the conclusion of MORDOR Phase I, by design, all communities received an additional year of twice-yearly azithromycin treatments (Phase II). Thus, at the conclusion of Phase II, the treatment history (1 letter per 6-month period) for the participating communities was either (PP-PP-AA) or (AA-AA-AA). In Phase III, participating communities were then re-randomized to receive either another 3 rounds of azithromycin or placebo, thus resulting in 4 treatment histories: Group 1 (AA-AA-AA-AA-A, N = 51), Group 2 (PP-PP-AA-AA-A, N = 40), Group 3 (AA-AA-AA-PP-P, N = 27), and Group 4 (PP-PP-AA-PP-P, N = 32). Rectal swabs from each child (N = 5,340) were obtained 6 months after the last treatment. Each child contributed 1 rectal swab and these were pooled at the community level, processed for DNA-seq, and analyzed for genetic resistance determinants. The primary prespecified outcome was macrolide resistance determinants in the gut. Secondary outcomes were resistance to beta-lactams and other antibiotic classes. Communities recently randomized to azithromycin (groups 1 and 2) had significantly more macrolide resistance determinants than those recently randomized to placebo (groups 3 and 4) (fold change 2.18, 95% CI 1.5 to 3.51, Punadj < 0.001). However, there was no significant increase in macrolide resistance in communities treated 4.5 years (group 1) compared to just the most recent 2.5 years (group 2) (fold change 0.80, 95% CI 0.50 to 1.00, Padj = 0.010), or between communities that had been treated for 3 years in the past (group 3) versus just 1 year in the past (group 4) (fold change 1.00, 95% CI 0.78 to 2.35, Padj = 0.52). We also found no significant differences for beta-lactams or other antibiotic classes. The main limitations of our study were the absence of phenotypic characterization of resistance, no complete placebo arm, and no monitoring outside of Niger limiting generalizability. CONCLUSIONS: In this study, we observed that mass azithromycin distribution for childhood mortality among preschool children in Niger increased macrolide resistance determinants in the gut but that resistance may plateau after 2 to 3 years of treatment. Co-selection to other classes needs to be monitored. TRIAL REGISTRATION: NCT02047981 https://classic.clinicaltrials.gov/ct2/show/NCT02047981.
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- 2024
17. The High Energy Light Isotope eXperiment program of direct cosmic-ray studies
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HELIX Collaboration, Coutu, S., Allison, P. S., Baiocchi, M., Beatty, J. J., Beaufore, L., Calderon, D. H., Castano, A. G., Chen, Y., Green, N., Hanna, D., Jeon, H. B., Klein, S. B., Kunkler, B., Lang, M., Mbarek, R., McBride, K., Mognet, S. I., Musser, J., Nutter, S., OBrien, S., Park, N., Powledge, K. M., Sakai, K., Tabata, M., Tarle, G., Tuttle, J. M., Visser, G., Wakely, S. P., and Yu, M.
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Astrophysics - Instrumentation and Methods for Astrophysics ,Physics - Instrumentation and Detectors - Abstract
HELIX is a new NASA-sponsored instrument aimed at measuring the spectra and composition of light cosmic-ray isotopes from hydrogen to neon nuclei, in particular the clock isotopes 10Be (radioactive, with 1.4 Myr lifetime) and 9Be (stable). The latter are unique markers of the production and Galactic propagation of secondary cosmic-ray nuclei, and are needed to resolve such important mysteries as the proportion of secondary positrons in the excess of antimatter observed by the AMS-02 experiment. By using a combination of a 1 T superconducting magnet spectrometer (with drift-chamber tracker) with a high-resolution time-of-flight detector system and ring-imaging Cherenkov detector, mass-resolved isotope measurements of light cosmic-ray nuclei will be possible up to 3 GeV/n in a first stratospheric balloon flight from Kiruna, Sweden to northern Canada, anticipated to take place in early summer 2024. An eventual longer Antarctic balloon flight of HELIX will yield measurements up to 10 GeV/n, sampling production from a larger volume of the Galaxy extending into the halo. We review the instrument design, testing, status and scientific prospects., Comment: Presented at the 16th Topical Seminar on Innovative Particle and Radiation Detectors (IPRD23), Siena, Italy, to appear in JINST Proc
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- 2023
18. Neonatal anthropometric indicators of infant growth and mortality in Burkina Faso.
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Bountogo, Mamadou, Sié, Ali, Zakane, Alphonse, Compaoré, Guillaume, Ouédraogo, Thierry, Lebas, Elodie, OBrien, Kieran, Lietman, Thomas, and Oldenburg, Catherine
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Infant mortality ,Screening ,Undernutrition ,Underweight ,Humans ,Burkina Faso ,Infant ,Male ,Female ,Infant ,Newborn ,Anthropometry ,Growth Disorders ,Infant Mortality ,Thinness ,Birth Weight ,Body Height ,Infant ,Low Birth Weight ,Azithromycin ,Child Development ,Wasting Syndrome ,Body Weight ,Logistic Models - Abstract
OBJECTIVE: Most evidence supporting screening for undernutrition is for children aged 6-59 months. However, the highest risk of mortality and highest incidence of wasting occurs in the first 6 months of life. We evaluated relationships between neonatal anthropometric indicators, including birth weight, weight-for-age Z-score (WAZ), weight-for-length Z-score (WLZ), length-for-age Z-score (LAZ) and mid-upper arm circumference (MUAC) and mortality and growth at 6 months of age among infants in Burkina Faso. DESIGN: Data arose from a randomised controlled trial evaluating neonatal azithromycin administration for the prevention of child mortality. We evaluated relationships between baseline anthropometric measures and mortality, wasting (WLZ < -2), stunting (LAZ < -2) and underweight (WAZ < -2) at 6 months of age were estimated using logistic regression models adjusted for the childs age and sex. SETTING: Five regions of Burkina Faso. PARTICIPANTS: Infants aged 8-27 d followed until 6 months of age. RESULTS: Of 21 832 infants enrolled in the trial, 7·9 % were low birth weight (
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- 2024
19. The mobilization and transport of newly fixed carbon are driven by plant water use in an experimental rainforest under drought.
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Huang, Jianbei, Ladd, S, Ingrisch, Johannes, Kübert, Angelika, Meredith, Laura, van Haren, Joost, Bamberger, Ines, Daber, L, Kühnhammer, Kathrin, Bailey, Kinzie, Hu, Jia, Fudyma, Jane, Shi, Lingling, Dippold, Michaela, Meeran, Kathiravan, Miller, Luke, OBrien, Michael, Yang, Hui, Herrera-Ramírez, David, Hartmann, Henrik, Trumbore, Susan, Bahn, Michael, Werner, Christiane, and Lehmann, Marco
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Carbon allocation ,drought and climate change ,ecosystem isotopic labeling ,non-structural carbohydrate storage ,plant hydraulics ,tropical forests ,Rainforest ,Carbon ,Ecosystem ,Droughts ,Water ,Trees ,Carbohydrates ,Plant Leaves - Abstract
Non-structural carbohydrates (NSCs) are building blocks for biomass and fuel metabolic processes. However, it remains unclear how tropical forests mobilize, export, and transport NSCs to cope with extreme droughts. We combined drought manipulation and ecosystem 13CO2 pulse-labeling in an enclosed rainforest at Biosphere 2, assessed changes in NSCs, and traced newly assimilated carbohydrates in plant species with diverse hydraulic traits and canopy positions. We show that drought caused a depletion of leaf starch reserves and slowed export and transport of newly assimilated carbohydrates below ground. Drought effects were more pronounced in conservative canopy trees with limited supply of new photosynthates and relatively constant water status than in those with continual photosynthetic supply and deteriorated water status. We provide experimental evidence that local utilization, export, and transport of newly assimilated carbon are closely coupled with plant water use in canopy trees. We highlight that these processes are critical for understanding and predicting tree resistance and ecosystem fluxes in tropical forest under drought.
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- 2024
20. How Primary Care Clinicians Process Patient Death: Logistics, Emotions, and Opportunities for Structural Support.
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Erickson, Jessica, OBrien, Bridget, and Nouri, Sarah
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emotional processing ,logistics ,patient death ,primary care ,support - Abstract
BACKGROUND: Navigating the logistics and emotional processing of a patients death is an inevitable part of many physicians roles. While research has primarily examined how inpatient clinicians cope with patient loss, little work has explored how primary care clinicians (PCCs) handle patient death in the outpatient setting, and what support resources could help PCCs process loss. OBJECTIVE: To explore PCCs experiences with the logistics and emotional processing of patient deaths and suggestions for supportive resources. DESIGN: Qualitative study using semi-structured interviews conducted between March and May 2023. PARTICIPANTS: Recruitment emails were sent to 136 PCCs (physicians and nurse practitioners) at three San Francisco academic primary care clinics. Twelve clinicians participated in the study. APPROACH: This study used a template analysis approach. Interview transcripts were analyzed in an iterative fashion to identify themes for how PCCs navigate patient death. RESULTS: Participants (n=12) described outpatient death notification as inconsistent, delayed, and rife with uncertainty regarding subsequent actions. They felt various emotions, notably sadness and guilt, especially with deaths of young, vulnerable patients or those from preventable illnesses. Participants identified strategies for emotional processing and recommended improvements including clear procedural guidance, peer debriefings, and formal acknowledgements of deceased patients. CONCLUSIONS: Interviewing PCCs about their experiences following a patient death revealed key themes in logistical and emotional processing, and clinic resource recommendations to better support PCCs. Given the distinct characteristics of primary care-such as enduring patient relationships, greater isolation in ambulatory settings compared to inpatient environments, and rising burnout rates-enhancing guidance and support for PCCs is crucial to mitigate administrative burdens and grief after patient loss.
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- 2024
21. Lewy body dementia: Overcoming barriers and identifying solutions.
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Bloom, Leah, Boeve, Bradley, Cha, Jang-Ho, Denslow, Maria, Ferman, Tanis, Galasko, Douglas, Galvin, James, Gomperts, Stephen, Irizarry, Michael, Kantarci, Kejal, Kaushik, Harsh, Kietlinski, Matt, Koenig, Aaron, Leverenz, James, McKeith, Ian, McLean, Pamela, Montine, Thomas, Moose, Sandra, OBrien, John, Panier, Valery, Ramanathan, Sharad, Ringel, Michael, Scholz, Sonja, Small, Jonnell, Sperling, Reisa, Taylor, Angela, Taylor, John-Paul, Ward, Rebecca, Witten, Lisa, Hyman, Bradley, Agarwal, Kanishka, Backler, Wendi, and Bayram, Ece
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Lewy body dementia ,funding sources ,natural language processing ,research trends ,Humans ,Lewy Body Disease - Abstract
Despite its high prevalence among dementias, Lewy body dementia (LBD) remains poorly understood with a limited, albeit growing, evidence base. The public-health burden that LBD imposes is worsened by overlapping pathologies, which contribute to misdiagnosis, and lack of treatments. For this report, we gathered and analyzed public-domain information on advocacy, funding, research outputs, and the therapeutic pipeline to identify gaps in each of these key elements. To further understand the current gaps, we also conducted interviews with leading experts in regulatory/governmental agencies, LBD advocacy, academic research, and biopharmaceutical research, as well as with funding sources. We identified wide gaps across the entire landscape, the most critical being in research. Many of the experts participated in a workshop to discuss the prioritization of research areas with a view to accelerating therapeutic development and improving patient care. This white paper outlines the opportunities for bridging the major LBD gaps and creates the framework for collaboration in that endeavor. HIGHLIGHTS: A group representing academia, government, industry, and consulting expertise was convened to discuss current progress in Dementia with Lewy Body care and research. Consideration of expert opinion,natural language processing of the literature as well as publicly available data bases, and Delphi inspired discussion led to a proposed consensus document of priorities for the field.
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- 2024
22. Anthropogenic aerosols mask increases in US rainfall by greenhouse gases.
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Collins, William, OBrien, Travis, Huang, Huanping, Ullrich, Paul, Wehner, Michael, and Risser, Mark
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A comprehensive understanding of human-induced changes to rainfall is essential for water resource management and infrastructure design. However, at regional scales, existing detection and attribution studies are rarely able to conclusively identify human influence on precipitation. Here we show that anthropogenic aerosol and greenhouse gas (GHG) emissions are the primary drivers of precipitation change over the United States. GHG emissions increase mean and extreme precipitation from rain gauge measurements across all seasons, while the decadal-scale effect of global aerosol emissions decreases precipitation. Local aerosol emissions further offset GHG increases in the winter and spring but enhance rainfall during the summer and fall. Our results show that the conflicting literature on historical precipitation trends can be explained by offsetting aerosol and greenhouse gas signals. At the scale of the United States, individual climate models reproduce observed changes but cannot confidently determine whether a given anthropogenic agent has increased or decreased rainfall.
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- 2024
23. Discovery of a Radiation Component from the Vela Pulsar Reaching 20 Teraelectronvolts
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Collaboration, The H. E. S. S., Aharonian, F., Benkhali, F. Ait, Aschersleben, J., Ashkar, H., Backes, M., Martins, V. Barbosa, Batzofin, R., Becherini, Y., Berge, D., Bernlöhr, K., Bi, B., Böttcher, M., Boisson, C., Bolmont, J., de Lavergne, M. de Bony, Borowska, J., Bradascio, F., Breuhaus, M., Brose, R., Brun, F., Bruno, B., Bulik, T., Burger-Scheidlin, C., Bylund, T., Cangemi, F., Caroff, S., Casanova, S., Celic, J., Cerruti, M., Chand, T., Chandra, S., Chen, A., Chibueze, O., Cotter, G., Mbarubucyeye, J. Damascene, Djannati-Ataï, A., Dmytriiev, A., Egberts, K., Ernenwein, J. -P., Feijen, K., Fiasson, A., de Clairfontaine, G. Fichet, Fontaine, G., Füßling, M., Funk, S., Gabici, S., Gallant, Y. A., Ghafourizadeh, S., Giavitto, G., Giunti, L., Glawion, D., Glicenstein, J. F., Goswami, P., Grolleron, G., Grondin, M. -H., Haerer, L., Haupt, M., Hinton, J. A., Hofmann, W., Holch, T. L., Holler, M., Horns, D., Huang, Zhiqiu, Jamrozy, M., Jankowsky, F., Joshi, V., Jung-Richardt, I., Kasai, E., Katarzyński, K., Khélifi, B., Klepser, S., Kluźniak, W., Komin, Nu., Kosack, K., Kostunin, D., Lang, R. G., Stum, S. Le, Lemière, A., Lemoine-Goumard, M., Lenain, J. -P., Leuschner, F., Lohse, T., Luashvili, A., Lypova, I., Mackey, J., Malyshev, D., Marandon, V., Marchegiani, P., Marcowith, A., Marinos, P., Martí-Devesa, G., Marx, R., Maurin, G., Meyer, M., Mitchell, A., Moderski, R., Mohrmann, L., Montanari, A., Moulin, E., Muller, J., Murach, T., Nakashima, K., de Naurois, M., Niemiec, J., Noel, A. Priyana, OBrien, P., Ohm, S., Olivera-Nieto, L., Wilhelmi, E. de Ona, Ostrowski, M., Panny, S., Panter, M., Parsons, R. D., Peron, G., Pita, S., Prokhorov, D. A., Prokoph, H., Pühlhofer, G., Punch, M., Quirrenbach, A., Reichherzer, P., Reimer, A., Reimer, O., Renaud, M., Rieger, F., Rowell, G., Rudak, B., Ruiz-Velasco, E., Sahakian, V., Sailer, S., Salzmann, H., Sanchez, D. A., Santangelo, A., Sasaki, M., Schüssler, F., Schwanke, U., Shapopi, J. N. S., Sinha, A., Sol, H., Specovius, A., Spencer, S., Spir-Jacob, M., Stawarz, L., Steenkamp, R., Steinmassl, S., Steppa, C., Sushch, I., Suzuki, H., Takahashi, T., Tanaka, T., Tavernier, T., Terrier, R., Thorpe-Morgan, C., Tluczykont, M., Tsirou, M., Tsuji, N., van Eldik, C., Vecchi, M., Veh, J., Venter, C., Vink, J., Wagner, S. J., Werner, F., White, R., Wierzcholska, A., Wong, Yu Wun, Yassin, H., Zacharias, M., Zargaryan, D., Zdziarski, A. A., Zech, A., Zhu, S. J., Zouari, S., Żywucka, N., Zanin, R., Kerr, M., Johnston, S., Shannon, R. M., and Smith, D. A.
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Astrophysics - High Energy Astrophysical Phenomena - Abstract
Gamma-ray observations have established energetic isolated pulsars as outstanding particle accelerators and antimatter factories in the Galaxy. There is, however, no consensus regarding the acceleration mechanisms and the radiative processes at play, nor the locations where these take place. The spectra of all observed gamma-ray pulsars to date show strong cutoffs or a break above energies of a few gigaelectronvolt (GeV). Using the H.E.S.S. array of Cherenkov telescopes, we discovered a novel radiation component emerging beyond this generic GeV cutoff in the Vela pulsar's broadband spectrum. The extension of gamma-ray pulsation energies up to at least 20 teraelectronvolts (TeV) shows that Vela pulsar can accelerate particles to Lorentz factors higher than $4\times10^7$. This is an order of magnitude larger than in the case of the Crab pulsar, the only other pulsar detected in the TeV energy range. Our results challenge the state-of-the-art models for high-energy emission of pulsars while providing a new probe, i.e. the energetic multi-TeV component, for constraining the acceleration and emission processes in their extreme energy limit., Comment: 38 pages, 6 figures. This preprint has not undergone peer review or any post-submission improvements or corrections. The Version of Record of this article is published in Nature Astronomy, Nat Astron (2023), and is available online at https://doi.org/10.1038/s41550-023-02052-3
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- 2023
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24. The super-healing MRL strain promotes muscle growth in muscular dystrophy through a regenerative extracellular matrix.
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OBrien, Joseph, Willis, Alexander, Long, Ashlee, Kwon, Jason, Lee, GaHyun, Li, Frank, Page, Patrick, Vo, Andy, Hadhazy, Michele, Spencer, Melissa, Demonbreun, Alexis, McNally, Elizabeth, and Crosbie, Rachelle
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Extracellular matrix ,Fibrosis ,Muscle Biology ,Stem cells ,Mice ,Animals ,Mice ,Inbred DBA ,Muscular Dystrophies ,Muscles ,Extracellular Matrix ,Muscular Dystrophies ,Limb-Girdle ,Mice ,Knockout - Abstract
The Murphy Roths Large (MRL) mouse strain has super-healing properties that enhance recovery from injury. In mice, the DBA/2J strain intensifies many aspects of muscular dystrophy, so we evaluated the ability of the MRL strain to suppress muscular dystrophy in the Sgcg-null mouse model of limb girdle muscular dystrophy. A comparative analysis of Sgcg-null mice in the DBA/2J versus MRL strains showed greater myofiber regeneration, with reduced structural degradation of muscle in the MRL strain. Transcriptomic profiling of dystrophic muscle indicated strain-dependent expression of extracellular matrix (ECM) and TGF-β signaling genes. To investigate the MRL ECM, cellular components were removed from dystrophic muscle sections to generate decellularized myoscaffolds. Decellularized myoscaffolds from dystrophic mice in the protective MRL strain had significantly less deposition of collagen and matrix-bound TGF-β1 and TGF-β3 throughout the matrix. Dystrophic myoscaffolds from the MRL background, but not the DBA/2J background, were enriched in myokines like IGF-1 and IL-6. C2C12 myoblasts seeded onto decellularized matrices from Sgcg-/- MRL and Sgcg-/- DBA/2J muscles showed the MRL background induced greater myoblast differentiation compared with dystrophic DBA/2J myoscaffolds. Thus, the MRL background imparts its effect through a highly regenerative ECM, which is active even in muscular dystrophy.
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- 2024
25. Placental ferroportin protein abundance is associated with neonatal erythropoietic activity and iron status in newborns at high risk for iron deficiency and anemia.
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Barad, Alexa, Guillet, Ronnie, Pressman, Eva, Katzman, Philip, Ganz, Tomas, Nemeth, Elizabeta, and OBrien, Kimberly
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erythropoietic activity ,high-risk pregnancy ,iron trafficking proteins ,neonatal anemia ,placenta ,Adolescent ,Pregnancy ,Infant ,Newborn ,Female ,Humans ,Animals ,Mice ,Iron ,Hepcidins ,Ferritins ,Placenta ,Anemia ,Iron Deficiencies ,Receptors ,Transferrin ,Hemoglobins ,Anemia ,Iron-Deficiency - Abstract
BACKGROUND: Murine data suggest that the placenta downregulates ferroportin (FPN) when iron is limited to prioritize iron for its own needs. Human data on the impact of maternal and neonatal iron status on placental FPN expression are conflicting. OBJECTIVES: This study aimed to identify determinants of placental FPN protein abundance and to assess the utility of the placental iron deficiency index (PIDI) as a measure of maternal/fetal iron status in newborns at high risk for anemia. METHODS: Placental FPN protein abundance was measured by western blots in placentae collected from 133 neonates born to adolescents (17.4 ± 1.1 y) carrying singletons (delivery gestational age [GA]: 39.9 ± 1.3 wk) and from 130 neonates born to 65 females (30.4 ± 5.2 y) carrying multiples (delivery GA: 35.0 ± 2.8 wk). Placental FPN and the PIDI (FPN:transferrin receptor 1) were evaluated in relation to neonatal and maternal iron-related markers (hemoglobin [Hb], serum ferritin [SF], soluble transferrin receptor [sTfR], total body iron [TBI], hepcidin, erythropoietin [EPO], erythroferrone). RESULTS: FPN protein was detected in all placentae delivered between 25 and 42 wk GA. Placental FPN protein abundance was associated with neonatal iron and erythropoietic markers (EPO: β: 0.10; 95% confidence interval [CI]: 0.06, 0.35; sTfR: β: 0.20; 95% CI: 0.03, 0.18; hepcidin: β: -0.06; 95% CI: -0.13, -0.0003; all P < 0.05). Maternal sTfR was only indirectly associated with placental FPN, with neonatal sTfR as the mediator (β-indirect: 0.06; 95% CI; 0.03, 0.11; P = 0.003). The PIDI was associated with neonatal Hb (β: -0.02; 95% CI: -0.03, -0.003), EPO (β: 0.07; 95% CI: 0.01, 0.14), and sTfR (β: 0.13; 95% CI: 0.004, 0.3) and with maternal SF (β: 0.08, 95% CI: 0.02, 0.14), TBI (β: 0.02; 95% CI: 0.009, 0.04), EPO (β: -0.10; 95% CI: -0.19, -0.01), sTfR (β: -0.16: 95% CI: -0.27, -0.06), and hepcidin (β: 0.05; 95% CI: 0.002, 0.11) at delivery (all P < 0.05). CONCLUSIONS: Placental FPN abundance was positively associated with neonatal indicators of increased erythropoietic activity and poor iron status. The PIDI was associated with maternal and neonatal iron-related markers but in opposite directions. More data are needed from a lower-risk normative group of females to assess the generalizability of findings. These trials were registered at clinicaltrials.gov as NCT01019902 and NCT01582802.
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- 2024
26. Mass azithromycin for prevention of child mortality among children with acute malnutrition: A subgroup analysis of a cluster randomized controlled trial.
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Sié, Ali, Ouattara, Mamadou, Bountogo, Mamadou, Boudo, Valentin, Ouedraogo, Thierry, Dah, Clarisse, Compaoré, Guillaume, Lebas, Elodie, Hu, Huiyu, Porco, Travis, Arnold, Benjamin, OBrien, Kieran, Lietman, Thomas, and Oldenburg, Catherine
- Abstract
Children with acute malnutrition are at high risk of morality. Mass azithromycin distribution reduces all-cause mortality among children aged 1-59 months, and effects may be greater in underweight infants. Here, we evaluate the efficacy of azithromycin for reducing all-cause mortality in children aged 6-59 months with acute malnutrition (mid-upper arm circumference, MUAC, < 12.5 cm). Communities in Nouna District, Burkina Faso were 1:1 randomized to biannual mass distribution of single dose azithromycin or placebo to all children aged 1-59 months. Mortality was assessed during each census and treatment round. MUAC measurements were collected for all children. We evaluated the effect of azithromycin on mortality in subgroups of children aged 6-59 months defined by acute malnutrition (MUAC < 12.5 cm versus MUAC ≥ 12.5 cm). In children with MUAC < 12.5 cm, mortality rates were 51% lower among those living in azithromycin communities compared to placebo (incidence rate ratio 0.49, 95% confidence interval, CI, 0.25 to 0.99; incidence rate difference -18.1 deaths per 1,000 person-years, 95% CI -37.0 to -0.01), which was greater than the reduction in mortality among children with MUAC ≥ 12.5 cm (P-value for interaction on the relative scale = 0.09; P-value for interaction of the additive scale = 0.03). Children with acute malnutrition may benefit from single dose azithromycin above and beyond those without acute malnutrition. Trial registration: ClinicalTrials.gov NCT03676764; https://clinicaltrials.gov/study/NCT03676764.
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- 2024
27. Etiology of hospital mortality in children living in low- and middle-income countries: a systematic review and meta-analysis.
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Kortz, Teresa, Mediratta, Rishi, Smith, Audrey, Nielsen, Katie, Agulnik, Asya, Gordon Rivera, Stephanie, Reeves, Hailey, OBrien, Nicole, Lee, Jan, Abbas, Qalab, Attebery, Jonah, Bacha, Tigist, Bhutta, Emaan, Biewen, Carter, Camacho-Cruz, Jhon, Coronado Muñoz, Alvaro, deAlmeida, Mary, Domeryo Owusu, Larko, Fonseca, Yudy, Hooli, Shubhada, Wynkoop, Hunter, Leimanis-Laurens, Mara, Nicholaus Mally, Deogratius, McCarthy, Amanda, Mutekanga, Andrew, Pineda, Carol, Remy, Kenneth, Sanders, Sara, Tabor, Erica, Teixeira Rodrigues, Adriana, Yuee Wang, Justin, Kissoon, Niranjan, Takwoingi, Yemisi, Wiens, Matthew, and Bhutta, Adnan
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acute illness ,critical illness ,global health ,hospital admission ,hospital death ,low- and middle-income countries ,resource-limited settings - Abstract
In 2019, 80% of the 7.4 million global child deaths occurred in low- and middle-income countries (LMICs). Global and regional estimates of cause of hospital death and admission in LMIC children are needed to guide global and local priority setting and resource allocation but are currently lacking. The study objective was to estimate global and regional prevalence for common causes of pediatric hospital mortality and admission in LMICs. We performed a systematic review and meta-analysis to identify LMIC observational studies published January 1, 2005-February 26, 2021. Eligible studies included: a general pediatric admission population, a cause of admission or death, and total admissions. We excluded studies with data before 2,000 or without a full text. Two authors independently screened and extracted data. We performed methodological assessment using domains adapted from the Quality in Prognosis Studies tool. Data were pooled using random-effects models where possible. We reported prevalence as a proportion of cause of death or admission per 1,000 admissions with 95% confidence intervals (95% CI). Our search identified 29,637 texts. After duplicate removal and screening, we analyzed 253 studies representing 21.8 million pediatric hospitalizations in 59 LMICs. All-cause pediatric hospital mortality was 4.1% [95% CI 3.4%-4.7%]. The most common causes of mortality (deaths/1,000 admissions) were infectious [12 (95% CI 9-14)]; respiratory [9 (95% CI 5-13)]; and gastrointestinal [9 (95% CI 6-11)]. Common causes of admission (cases/1,000 admissions) were respiratory [255 (95% CI 231-280)]; infectious [214 (95% CI 193-234)]; and gastrointestinal [166 (95% CI 143-190)]. We observed regional variation in estimates. Pediatric hospital mortality remains high in LMICs. Global child health efforts must include measures to reduce hospital mortality including basic emergency and critical care services tailored to the local disease burden. Resources are urgently needed to promote equity in child health research, support researchers, and collect high-quality data in LMICs to further guide priority setting and resource allocation.
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- 2024
28. The genome sequences of the marine diatom Epithemia pelagica strain UHM3201 (Schvarcz, Stancheva & Steward, 2022) and its nitrogen-fixing, endosymbiotic cyanobacterium.
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Schvarcz, Christopher, Stancheva, Rosalina, Turk-Kubo, Kendra, Wilson, Samuel, Zehr, Jonathan, Edwards, Kyle, Steward, Grieg, Archibald, John, Oatley, Graeme, Sinclair, Elizabeth, Santos, Camilla, Paulini, Michael, Aunin, Eerik, Gettle, Noah, Niu, Haoyu, McKenna, Victoria, and OBrien, Rebecca
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Epithemia pelagica strain UHM3201 ,Rhopalodiales ,chromosomal ,cyanobacterial endosymbiont ,genome sequence ,pennate diatom - Abstract
We present the genome assembly of the pennate diatom Epithemia pelagica strain UHM3201 (Ochrophyta; Bacillariophyceae; Rhopalodiales; Rhopalodiaceae) and that of its cyanobacterial endosymbiont (Chroococcales: Aphanothecaceae). The genome sequence of the diatom is 60.3 megabases in span, and the cyanobacterial genome has a length of 2.48 megabases. Most of the diatom nuclear genome assembly is scaffolded into 15 chromosomal pseudomolecules. The organelle genomes have also been assembled, with the mitochondrial genome 40.08 kilobases and the plastid genome 130.75 kilobases in length. A number of other prokaryote MAGs were also assembled.
- Published
- 2024
29. Single-dose azithromycin for infant growth in Burkina Faso: Prespecified secondary anthropometric outcomes from a randomized controlled trial.
- Author
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Sié, Ali, Ouattara, Mamadou, Bountogo, Mamadou, Dah, Clarisse, Ouedraogo, Thierry, Boudo, Valentin, Lebas, Elodie, Hu, Huiyu, Oldenburg, Catherine, OBrien, Kieran, Lietman, Thomas, and Arnold, Benjamin
- Subjects
Child ,Infant ,Humans ,Azithromycin ,Burkina Faso ,Pediatric Obesity ,Weight Gain ,Anti-Bacterial Agents - Abstract
BACKGROUND: Antibiotic use during early infancy has been linked to childhood obesity in high-income countries. We evaluated whether a single oral dose of azithromycin administered during infant-well visits led to changes in infant growth outcomes at 6 months of age in a setting with a high prevalence of undernutrition in rural Burkina Faso. METHODS AND FINDINGS: Infants were enrolled from September 25, 2019, until October 22, 2022, in a randomized controlled trial designed to evaluate the efficacy of a single oral dose of azithromycin (20 mg/kg) compared to placebo when administered during well-child visits for prevention of infant mortality. The trial found no evidence of a difference in the primary endpoint. This paper presents prespecified secondary anthropometric endpoints including weight gain (g/day), height change (mm/day), weight-for-age Z-score (WAZ), weight-for-length Z-score (WLZ), length-for-age Z-score (LAZ), and mid-upper arm circumference (MUAC). Infants were eligible for the trial if they were between 5 and 12 weeks of age, able to orally feed, and their families were planning to remain in the study area for the duration of the study. Anthropometric measurements were collected at enrollment (5 to 12 weeks of age) and 6 months of age. Among 32,877 infants enrolled in the trial, 27,298 (83%) were followed and had valid anthropometric measurements at 6 months of age. We found no evidence of a difference in weight gain (mean difference 0.03 g/day, 95% confidence interval (CI) -0.12 to 0.18), height change (mean difference 0.004 mm/day, 95% CI -0.05 to 0.06), WAZ (mean difference -0.004 SD, 95% CI -0.03 to 0.02), WLZ (mean difference 0.001 SD, 95% CI -0.03 to 0.03), LAZ (mean difference -0.005 SD, 95% CI -0.03 to 0.02), or MUAC (mean difference 0.01 cm, 95% CI -0.01 to 0.04). The primary limitation of the trial was that measurements were only collected at enrollment and 6 months of age, precluding assessment of shorter-term or long-term changes in growth. CONCLUSIONS: Single-dose azithromycin does not appear to affect weight and height outcomes when administered during early infancy. TRIAL REGISTRATION: ClinicalTrials.gov NCT03676764.
- Published
- 2024
30. Expression of thrombospondins by endotheial cells: injury is correlated with TSP1
- Author
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Reed, MJ, Iruela-Arispe, Luisa, Obrien, ER, Truong, Thao, LaBell, T, Bornstein, P, and Sage, EH
- Subjects
Medical and Health Sciences ,Pathology ,Biomedical and clinical sciences ,Health sciences - Published
- 2023
31. Comparison of Population-Based Census versus Birth History for the Estimation of Under-5 Mortality in Niger.
- Author
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Peterson, Brittany, Arzika, Ahmed, Amza, Abdou, Karamba, Alio, Dodo, Nasser, Galo, Nasser, Beidi, Aboubacar, Moustapha, Abarchi, Lebas, Elodie, Cook, Catherine, Keenan, Jeremy, OBrien, Kieran, and Lietman, Thomas
- Subjects
Child ,Humans ,Infant ,Child ,Preschool ,Reproductive History ,Niger ,Censuses ,Child Mortality ,Mass Drug Administration ,Mortality - Abstract
The WHO guidelines on mass distribution of azithromycin for child survival recommend monitoring of mortality to evaluate effectiveness. Trials that contributed evidence to these guidelines used a population-based census to monitor vital status, requiring census workers to visit each household biannually (twice yearly). Birth history is an alternative to the census approach that may be more feasible because it decreases the time and labor needed for mortality monitoring. This study aimed to compare the population-based census (reference standard) and birth history (index test) approaches to estimating mortality among children 1 to 59 months old using data from the Macrolides Oraux pour Réduire les Décès avec un Oeil sur la Résistance (MORDOR) trial. Sixteen communities that received 5 years of biannual census in the MORDOR trial were selected randomly also to receive birth history surveys. The census approach recorded more participants and households than birth history, with correlations more than 0.94 for each. The correlation between number of deaths in each community was 0.84 (95% CI, 0.59-0.94). A comparison of the mortality incidence rate estimated from the census against the under-5 mortality rate estimated from the birth history resulted in a correlation of 0.60 (95% CI, 0.15-0.84). Of the 47% of children who were linked individually to compare vital status from each method, the death status of children had a sensitivity of 80% (95% CI, 73-89) and a specificity of 98% (95% CI, 98-99), comparing birth history to census. Overall birth histories were found to be a reasonable alternative to biannual census for tracking vital status.
- Published
- 2023
32. Risk factors for corneal ulcers: a population-based matched case-control study in Nepal.
- Author
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Byanju, Raghunandan, Kandel, Ram, Poudyal, Bimal, Bhandari, Sadhan, Ligal, Anju, Pradhan, Sangita, Gautam, Maria, Shrestha, Puspa, Sah, Ranjeet, Gonzales, John, Porco, Travis, Whitcher, John, Srinivasan, Muthiah, Upadhyay, Madan, Lietman, Thomas, Keenan, Jeremy, and OBrien, Kieran
- Subjects
cornea ,epidemiology ,public health ,Humans ,Corneal Ulcer ,Case-Control Studies ,Nepal ,Cornea ,Risk Factors - Abstract
BACKGROUND/AIMS: We aimed to examine risk factors for corneal ulcer in a rural and peri-urban setting in Nepal. METHODS: This population-based matched case-control study was nested in a cluster randomised trial in 24 village development committees in Nepal. Incidence density sampling was used to match incident corneal opacity cases to controls, matching on time of opacity, age, sex and location. Cases and controls were invited to participate in a survey of risk factors for corneal ulcer. Risk factors were evaluated using conditional logistic regression to account for matching. RESULTS: Of the 540 participants with incident opacities identified in the trial, 433 were willing to participate in this substudy and matched to a control. Compared with controls, cases had lower odds of having any education vs no education (adjusted OR, aOR 0.60, 95% CI 0.39 to 0.94), working in non-manual labour occupations vs manual labour occupations (aOR 0.64, 95% CI 0.42 to 0.95) and preferring medical shops for ocular trauma versus eye care system centres (aOR 0.58, 95% CI 0.37 to 0.92). Cases had higher odds of protective goggle use versus no protection (aOR 3.8, 95% CI 1.3 to 11.0) and having an ocular injury vs none (aOR 7.7, 95% CI 4.3 to 13.6) compared with controls. CONCLUSION: We found ocular injury, manual labour and lower education to be strongly associated with the development of corneal ulcer. Given the persistent burden of corneal blindness in this area, prevention efforts could target efforts to increase access to care in areas where these factors are common.
- Published
- 2023
33. Relationship Between Intraocular Pressure and Age: A Population-Based Study in Nepal.
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Bhandari, Gopal, Bhandari, Sadhan, Byanju, Raghunandan, Pradhan, Sangita, Sah, Ranjeet, Kandel, Ram, Thompson, Isabel, Rotchford, Alan, West, Sheila, Muñoz, Beatriz, Stevens, Valerie, Oatts, Julius, Ou, Yvonne, Lietman, Thomas, OBrien, Kieran, and Keenan, Jeremy
- Subjects
Adult ,Humans ,Middle Aged ,Aged ,Aged ,80 and over ,Intraocular Pressure ,Cross-Sectional Studies ,Nepal ,Tonometry ,Ocular ,Glaucoma - Abstract
PRCIS: Intraocular pressure (IOP) decreased with age in a population-based study in Nepal, from a mean of 14.1 mm Hg among those 60-64 years old to 13.0 mm Hg among those 80 years old or older. PURPOSE: Few studies have assessed the distribution of IOP from the Indian subcontinent, despite its large population and high burden of glaucoma. The objective of this study was to assess the distribution of IOP measurements from adults living in a lowland region of Nepal. METHODS: In a population-based cross-sectional study, all individuals aged 60 years and older from an area of lowland Nepal were invited for an IOP assessment with a rebound tonometer. RESULTS: Of 160 communities (28,672 people aged ≥60 y) enrolled, 79 (13,808 people aged ≥60 y) were randomly selected for IOP testing. Of those eligible, 10,017 (72.5%) individuals underwent tonometry. Mean IOP decreased monotonically over 5-year age groups, from 14.1 mm Hg (SD: 3.6) among those aged 60-64 years to 13.0 mm Hg (SD: 4.2) among those 80 years or older. The 97.5th percentile IOP measurement was 21.0 mm Hg for all age groups. In adjusted analyses, younger age, self-reported diabetes, and higher population density were each associated with higher IOP, and self-reported cataract surgery was associated with lower IOP. CONCLUSIONS: Mean IOP was lower among older individuals in Nepal, consistent with many studies from East Asia and in contrast to many studies from western populations. These results suggest that ethnic background might be a consideration when diagnosing ocular hypertension.
- Published
- 2023
34. Single-haplotype comparative genomics provides insights into lineage-specific structural variation during cat evolution.
- Author
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Bredemeyer, Kevin, Hillier, LaDeana, Harris, Andrew, Hughes, Graham, Foley, Nicole, Lawless, Colleen, Carroll, Rachel, Storer, Jessica, Batzer, Mark, Rice, Edward, Davis, Brian, Raudsepp, Terje, OBrien, Stephen, Lyons, Leslie, Warren, Wesley, and Murphy, William
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Haplotypes ,Evolution ,Molecular ,Genomics ,Genome ,Gene Dosage - Abstract
The role of structurally dynamic genomic regions in speciation is poorly understood due to challenges inherent in diploid genome assembly. Here we reconstructed the evolutionary dynamics of structural variation in five cat species by phasing the genomes of three interspecies F1 hybrids to generate near-gapless single-haplotype assemblies. We discerned that cat genomes have a paucity of segmental duplications relative to great apes, explaining their remarkable karyotypic stability. X chromosomes were hotspots of structural variation, including enrichment with inversions in a large recombination desert with characteristics of a supergene. The X-linked macrosatellite DXZ4 evolves more rapidly than 99.5% of the genome clarifying its role in felid hybrid incompatibility. Resolved sensory gene repertoires revealed functional copy number changes associated with ecomorphological adaptations, sociality and domestication. This study highlights the value of gapless genomes to reveal structural mechanisms underpinning karyotypic evolution, reproductive isolation and ecological niche adaptation.
- Published
- 2023
35. Returning incidentally discovered Hepatitis C RNA-seq results to COPDGene study participants.
- Author
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Silverman, Edwin, Kim, Arthur, Make, Barry, Regan, Elizabeth, Morrow, Jarrett, Hersh, Craig, OBrien, James, Crapo, James, Hansel, Nadia, Criner, Gerard, Flenaugh, Eric, Conrad, Douglas, Casaburi, Richard, Bowler, Russell, Hanania, Nicola, Barr, R, Bhatt, Surya, Sciurba, Frank, Anzueto, Antonio, Han, MeiLan, McEvoy, Charlene, Comellas, Alejandro, DeMeo, Dawn, Rosiello, Richard, Curtis, Jeffrey, Uchida, Tricia, Wilson, Carla, and ORourke, P
- Abstract
The consequences of returning infectious pathogen test results identified incidentally in research studies have not been well-studied. Concerns include identification of an important health issue for individuals, accuracy of research test results, public health impact, potential emotional distress for participants, and need for IRB permissions. Blood RNA-sequencing analysis for non-human RNA in 3984 participants from the COPDGene study identified 228 participants with evidence suggestive for hepatitis C virus (HCV) infection. We hypothesized that incidentally discovered HCV results could be effectively returned to COPDGene participants with attention to the identified concerns. In conjunction with a COPDGene Participant Advisory Panel, we developed and obtained IRB approval for a process of returning HCV research results and an HCV Follow-Up Study questionnaire to capture information about previous HCV diagnosis and treatment information and participant reactions to return of HCV results. During phone calls following the initial HCV notification letter, 84 of 124 participants who could be contacted (67.7%) volunteered that they had been previously diagnosed with HCV infection. Thirty-one of these 124 COPDGene participants were enrolled in the HCV Follow-Up Study. Five of the 31 HCV Follow-Up Study participants did not report a previous diagnosis of HCV. For four of these participants, subsequent clinical HCV testing confirmed HCV infection. Thus, 30/31 Follow-Up Study participants had confirmed HCV diagnoses, supporting the accuracy of the HCV research test results. However, the limited number of participants in the Follow-Up Study precludes an accurate assessment of the false-positive and false-negative rates of the research RNA sequencing evidence for HCV. Most HCV Follow-Up Study participants (29/31) were supportive of returning HCV research results, and most participants found the process for returning HCV results to be informative and not upsetting. Newly diagnosed participants were more likely to be pleased to learn about a potentially curable infection (p = 0.027) and showed a trend toward being more frightened by the potential health risks of HCV (p = 0.11). We conclude that HCV results identified incidentally during transcriptomic research studies can be successfully returned to research study participants with a carefully designed process.
- Published
- 2023
36. Prognostic significance of haemodynamic parameters in patients with cardiogenic shock.
- Author
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Berg, David, Kaur, Gurleen, Bohula, Erin, Baird-Zars, Vivian, Alviar, Carlos, Barnett, Christopher, Barsness, Gregory, Burke, James, Chaudhry, Sunit-Preet, Chonde, Meshe, Cooper, Howard, Daniels, Lori, Dodson, Mark, Gerber, Daniel, Ghafghazi, Shahab, Gidwani, Umesh, Goldfarb, Michael, Guo, Jianping, Hillerson, Dustin, Kenigsberg, Benjamin, Kochar, Ajar, Kontos, Michael, Kwon, Younghoon, Lopes, Mathew, Loriaux, Daniel, Miller, P, Papolos, Alexander, Patel, Siddharth, Pisani, Barbara, Potter, Brian, Prasad, Rajnish, Rowsell, Robert, Shah, Kevin, Sinha, Shashank, Smith, Timothy, Solomon, Michael, Teuteberg, Jeffrey, Thompson, Andrea, Zakaria, Sammy, Katz, Jason, van Diepen, Sean, Morrow, David, and OBrien, Connor
- Subjects
Cardiogenic shock ,Haemodynamics ,Outcomes ,Pulmonary artery catheter ,Humans ,Shock ,Cardiogenic ,Prognosis ,Hemodynamics ,Vascular Resistance ,Lactates - Abstract
AIMS: Invasive haemodynamic assessment with a pulmonary artery catheter is often used to guide the management of patients with cardiogenic shock (CS) and may provide important prognostic information. We aimed to assess prognostic associations and relationships to end-organ dysfunction of presenting haemodynamic parameters in CS. METHODS AND RESULTS: The Critical Care Cardiology Trials Network is an investigator-initiated multicenter registry of cardiac intensive care units (CICUs) in North America coordinated by the TIMI Study Group. Patients with CS (2018-2022) who underwent invasive haemodynamic assessment within 24 h of CICU admission were included. Associations of haemodynamic parameters with in-hospital mortality were assessed using logistic regression, and associations with presenting serum lactate were assessed using least squares means regression. Sensitivity analyses were performed excluding patients on temporary mechanical circulatory support and adjusted for vasoactive-inotropic score. Among the 3603 admissions with CS, 1473 had haemodynamic data collected within 24 h of CICU admission. The median cardiac index was 1.9 (25th-75th percentile, 1.6-2.4) L/min/m2 and mean arterial pressure (MAP) was 74 (66-86) mmHg. Parameters associated with mortality included low MAP, low systolic blood pressure, low systemic vascular resistance, elevated right atrial pressure (RAP), elevated RAP/pulmonary capillary wedge pressure ratio, and low pulmonary artery pulsatility index. These associations were generally consistent when controlling for the intensity of background pharmacologic and mechanical haemodynamic support. These parameters were also associated with higher presenting serum lactate. CONCLUSION: In a contemporary CS population, presenting haemodynamic parameters reflecting decreased systemic arterial tone and right ventricular dysfunction are associated with adverse outcomes and systemic hypoperfusion.
- Published
- 2023
37. Mycorrhizal feedbacks influence global forest structure and diversity.
- Author
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Delavaux, Camille, LaManna, Joseph, Myers, Jonathan, Phillips, Richard, Aguilar, Salomón, Allen, David, Alonso, Alfonso, Anderson-Teixeira, Kristina, Baker, Matthew, Baltzer, Jennifer, Bissiengou, Pulchérie, Bonfim, Mariana, Bourg, Norman, Brockelman, Warren, Burslem, David, Chang, Li-Wan, Chen, Yang, Chiang, Jyh-Min, Chu, Chengjin, Clay, Keith, Cordell, Susan, Cortese, Mary, den Ouden, Jan, Dick, Christopher, Ediriweera, Sisira, Ellis, Erle, Feistner, Anna, Freestone, Amy, Giambelluca, Thomas, Giardina, Christian, He, Fangliang, Holík, Jan, Howe, Robert, Huaraca Huasca, Walter, Hubbell, Stephen, Inman, Faith, Jansen, Patrick, Johnson, Daniel, Kral, Kamil, Larson, Andrew, Litton, Creighton, Lutz, James, Malhi, Yadvinder, McGuire, Krista, McMahon, Sean, McShea, William, Memiaghe, Hervé, Nathalang, Anuttara, Norden, Natalia, Novotny, Vojtech, OBrien, Michael, Orwig, David, Ostertag, Rebecca, Parker, Geoffrey, Pérez, Rolando, Reynolds, Glen, Russo, Sabrina, Sack, Lawren, Šamonil, Pavel, Sun, I-Fang, Swanson, Mark, Thompson, Jill, Uriarte, Maria, Vandermeer, John, Wang, Xihua, Ware, Ian, Weiblen, George, Wolf, Amy, Wu, Shu-Hui, Zimmerman, Jess, Lauber, Thomas, Maynard, Daniel, Crowther, Thomas, Averill, Colin, and Gilbert, Gregory|Greg
- Subjects
Mycorrhizae ,Feedback ,Symbiosis ,Plants ,Soil - Abstract
One mechanism proposed to explain high species diversity in tropical systems is strong negative conspecific density dependence (CDD), which reduces recruitment of juveniles in proximity to conspecific adult plants. Although evidence shows that plant-specific soil pathogens can drive negative CDD, trees also form key mutualisms with mycorrhizal fungi, which may counteract these effects. Across 43 large-scale forest plots worldwide, we tested whether ectomycorrhizal tree species exhibit weaker negative CDD than arbuscular mycorrhizal tree species. We further tested for conmycorrhizal density dependence (CMDD) to test for benefit from shared mutualists. We found that the strength of CDD varies systematically with mycorrhizal type, with ectomycorrhizal tree species exhibiting higher sapling densities with increasing adult densities than arbuscular mycorrhizal tree species. Moreover, we found evidence of positive CMDD for tree species of both mycorrhizal types. Collectively, these findings indicate that mycorrhizal interactions likely play a foundational role in global forest diversity patterns and structure.
- Published
- 2023
38. Wastewater-Based Surveillance of Antimicrobial Resistance in Niger: An Exploratory Study.
- Author
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Ousmane, Sani, Kollo, Issifi, Jambou, Ronan, Boubacar, Rakia, Arzika, Ahmed, Maliki, Ramatou, Amza, Abdou, Liu, Zijun, Lebas, Elodie, Colby, Emily, Zhong, Lina, Chen, Cindi, Hinterwirth, Armin, Doan, Thuy, OBrien, Kieran, and Lietman, Thomas
- Subjects
Humans ,Anti-Bacterial Agents ,Drug Resistance ,Bacterial ,Wastewater-Based Epidemiological Monitoring ,Wastewater ,Niger - Abstract
Wastewater-based surveillance is increasingly recognized as an important approach to monitoring population-level antimicrobial resistance (AMR). In this exploratory study, we examined the use of metagenomics to evaluate AMR using untreated wastewater samples routinely collected by the Niger national polio surveillance program. Forty-eight stored samples from two seasons each year over 4 years (2016-2019) in three regions were selected for inclusion in this study and processed using unbiased DNA deep sequencing. Normalized number of reads of genetic determinants for different antibiotic classes were compared over time, by season, and by location. Correlations in resistance were examined among classes. Changes in reads per million per year were demonstrated for several classes, including decreases over time in resistance determinants for phenicols (-3.3, 95% CI: -8.7 to -0.1, P = 0.029) and increases over time for aminocoumarins (3.8, 95% CI: 0.0 to 11.4, P = 0.043), fluoroquinolones (6.8, 95% CI: 0.0 to 20.5, P = 0.048), and beta-lactams (0.85, 95% CI: 0.1 to 1.7, P = 0.006). Sulfonamide resistance was higher in the post-rainy season compared with the dry season (5.2-fold change, 95% CI: 3.4 to 7.9, P < 0.001). No differences were detected when comparing other classes by season or by site for any antibiotic class. Positive correlations were identified in genetic determinants of resistance among several antibiotic classes. These results demonstrate the potential utility of leveraging existing wastewater sample collection in this setting for AMR surveillance.
- Published
- 2023
39. Use of the Spirometric Fixed-Ratio Underdiagnoses COPD in African-Americans in a Longitudinal Cohort Study.
- Author
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Regan, Elizabeth, Lowe, Melissa, Make, Barry, Curtis, Jeffrey, Chen, Quan, Cho, Michael, Crooks, James, Lowe, Katherine, Wilson, Carla, OBrien, James, Oates, Gabriela, Baldomero, Arianne, Kinney, Gregory, Young, Kendra, Diaz, Alejandro, Bhatt, Surya, McCormack, Meredith, Hansel, Nadia, Kim, Victor, Richmond, Nicole, Westney, Gloria, Foreman, Marilyn, Conrad, Douglas, DeMeo, Dawn, Hoth, Karin, Amaza, Hannatu, Balasubramanian, Aparna, Kallet, Julia, Watts, Shandi, Hanania, Nicola, Hokanson, John, Beaty, Terri, Crapo, James, Silverman, Edwin, Casaburi, Richard, and Wise, Robert
- Subjects
COPD ,deprivation ,diagnosis ,fixed ratio ,spirometry ,Humans ,Black or African American ,Cohort Studies ,Cross-Sectional Studies ,Forced Expiratory Volume ,Longitudinal Studies ,Pulmonary Disease ,Chronic Obstructive ,Spirometry ,Vital Capacity ,Middle Aged ,White ,Smoking - Abstract
BACKGROUND: COPD diagnosis is tightly linked to the fixed-ratio spirometry criteria of FEV1/FVC
- Published
- 2023
40. Glasdegib plus intensive or non-intensive chemotherapy for untreated acute myeloid leukemia: results from the randomized, phase 3 BRIGHT AML 1019 trial.
- Author
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Tomlinson, Benjamin, Mayer, Jiri, Jou, Erin, Robak, Tadeusz, Taussig, David, Dombret, Hervé, Merchant, Akil, Shaik, Naveed, OBrien, Thomas, Roh, Whijae, Liu, Xueli, Ma, Wendy, DiRienzo, Christine, Chan, Geoffrey, Cortes, Jorge, Sekeres, Mikkael, Montesinos, Pau, Novak, Jan, Wang, Jianxiang, and Jeyakumar, Deepa
- Abstract
This is the primary report of the randomized, placebo-controlled phase 3 BRIGHT AML 1019 clinical trial of glasdegib in combination with intensive chemotherapy (cytarabine and daunorubicin) or non-intensive chemotherapy (azacitidine) in patients with untreated acute myeloid leukemia. Overall survival (primary endpoint) was similar between the glasdegib and placebo arms in the intensive (n = 404; hazard ratio [HR] 1.05; 95% confidence interval [CI]: 0.782-1.408; two-sided p = 0.749) and non-intensive (n = 325; HR 0.99; 95% CI: 0.768-1.289; two-sided p = 0.969) studies. The proportion of patients who experienced treatment-emergent adverse events was similar for glasdegib versus placebo (intensive: 99.0% vs. 98.5%; non-intensive: 99.4% vs. 98.8%). The most common treatment-emergent adverse events were nausea, febrile neutropenia, and anemia in the intensive study and anemia, constipation, and nausea in the non-intensive study. The addition of glasdegib to either cytarabine and daunorubicin or azacitidine did not significantly improve overall survival and the primary efficacy endpoint for the BRIGHT AML 1019 phase 3 trial was not met. Clinical trial registration: ClinicalTrials.gov: NCT03416179.
- Published
- 2023
41. Image data harmonization tools for the analysis of post-traumatic epilepsy development in preclinical multisite MRI studies.
- Author
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Bhagavatula, Sweta, Cabeen, Ryan, Harris, Neil, Gröhn, Olli, Wright, David, Garner, Rachael, Bennett, Alexis, Alba, Celina, Martinez, Aubrey, Ndode-Ekane, Xavier, Andrade, Pedro, Paananen, Tomi, Ciszek, Robert, Immonen, Riikka, Manninen, Eppu, Puhakka, Noora, Tohka, Jussi, Heiskanen, Mette, Ali, Idrish, Shultz, Sandy, Casillas-Espinosa, Pablo, Yamakawa, Glenn, Jones, Nigel, Hudson, Matthew, Silva, Juliana, Braine, Emma, Brady, Rhys, Santana-Gomez, Cesar, Smith, Gregory, Staba, Richard, OBrien, Terence, Pitkänen, Asla, and Duncan, Dominique
- Subjects
Epilepsy ,MRI ,Neuroimaging ,Preclinical research ,Rat model ,TBI ,Animals ,Epilepsy ,Post-Traumatic ,Diffusion Tensor Imaging ,Magnetic Resonance Imaging ,Epilepsy ,Biomarkers ,Brain - Abstract
Preclinical MRI studies have been utilized for the discovery of biomarkers that predict post-traumatic epilepsy (PTE). However, these single site studies often lack statistical power due to limited and homogeneous datasets. Therefore, multisite studies, such as the Epilepsy Bioinformatics Study for Antiepileptogenic Therapy (EpiBioS4Rx), are developed to create large, heterogeneous datasets that can lead to more statistically significant results. EpiBioS4Rx collects preclinical data internationally across sites, including the United States, Finland, and Australia. However, in doing so, there are robust normalization and harmonization processes that are required to obtain statistically significant and generalizable results. This work describes the tools and procedures used to harmonize multisite, multimodal preclinical imaging data acquired by EpiBioS4Rx. There were four main harmonization processes that were utilized, including file format harmonization, naming convention harmonization, image coordinate system harmonization, and diffusion tensor imaging (DTI) metrics harmonization. By using Python tools and bash scripts, the file formats, file names, and image coordinate systems are harmonized across all the sites. To harmonize DTI metrics, values are estimated for each voxel in an image to generate a histogram representing the whole image. Then, the Quantitative Imaging Toolkit (QIT) modules are utilized to scale the mode to a value of one and depict the subsequent harmonized histogram. The standardization of file formats, naming conventions, coordinate systems, and DTI metrics are qualitatively assessed. The histograms of the DTI metrics were generated for all the individual rodents per site. For inter-site analysis, an average of the individual scans was calculated to create a histogram that represents each site. In order to ensure the analysis can be run at the level of individual animals, the sham and TBI cohort were analyzed separately, which depicted the same harmonization factor. The results demonstrate that these processes qualitatively standardize the file formats, naming conventions, coordinate systems, and DTI metrics of the data. This assists in the ability to share data across the study, as well as disseminate tools that can help other researchers to strengthen the statistical power of their studies and analyze data more cohesively.
- Published
- 2023
42. The influence of ligament biomechanics on proximal junctional kyphosis and failure in patients with adult spinal deformity.
- Author
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Blais, Micah, Shahidi, Bahar, Anderson, Brad, OBrien, Eli, Moltzen, Courtney, Iannacone, Tina, Eastlack, Robert, and Mundis, Gregory
- Subjects
adult spinal deformity ,ligament ,proximal junctional failure ,proximal junctional kyphosis ,spine - Abstract
PURPOSE: It is unknown whether the biomechanics of the posterior ligamentous complex (PLC) are impaired in individuals undergoing surgery for adult spinal deformity (ASD). Characterizing these properties may improve our understanding of proximal junctional kyphosis (PJK; defined as proximal junctional angle [PJA] of >10 deg from UIV-1 to UIV + 2), as well as proximal junctional failure (PJF; symptomatic PJK requiring revision). The purpose of this prospective observational study is to compare biomechanical properties of the PLC in individuals with ASD who do, and do not develop PJK or PJF within 1 year of spinal fusion surgery. METHODS: Intraoperative biopsies of PLC were obtained from 32 consecutive patients undergoing spinal fusions for ASD (>4 levels). Ligament peak force, tensile stress, tensile strain, and elastic modulus (EM) were measured with a materials testing system. Biomechanical properties and tissue dimensions were correlated with age, gender, BMI, vitamin D level, osteoporosis, sagittal alignment, PJA and change in PJA preoperatively, within 3 months, and at 1 year postoperatively. RESULTS: Longer ligaments were associated with greater PJA change at 3 months (p = 0.04), and thinner ligaments were associated with greater PJA change at 1 year (r = 0.57, p = 0.01). Greater EM was associated with greater PJA at both 3 months and 1 year (p = 0.03). Five participants had a change in PJA of >10 1 year postoperatively, and three participants demonstrated PJF. EM was significantly higher in individuals who required revision surgery (p = 0.003), and ligament length was greater (p = 0.03). Preoperative sagittal alignment was not related to incidence of revision surgery (p > 0.10). CONCLUSIONS: The biomechanical properties of the PLC may be associated with higher risk for proximal failure. Ligaments that are longer, thinner, and less elastic are associated with higher postoperative PJA. Furthermore stiffer EM of the ligament is associated with the need for revision surgery.
- Published
- 2023
43. B-cell Receptor Pathway Mutations Are Infrequent in Patients with Chronic Lymphocytic Leukemia on Continuous Ibrutinib Therapy.
- Author
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Jones, Daniel, Cheung, Leo, Chong, Elizabeth, Kwei, Kevin, Dean, James, James, Danelle, Wiestner, Adrian, Woyach, Jennifer, Ghia, Paolo, Byrd, John, Ahn, Inhye, Moreno, Carol, and OBrien, Susan
- Subjects
Humans ,Leukemia ,Lymphocytic ,Chronic ,B-Cell ,Mutation ,Agammaglobulinaemia Tyrosine Kinase ,Receptors ,Antigen ,B-Cell - Abstract
PURPOSE: Acquired mutations in Brutons tyrosine kinase (BTK) or phospholipase C-γ2 (PLCG2) genes are associated with clinical progressive disease (PD) in patients with chronic lymphocytic leukemia (CLL) treated with BTK inhibitors. Data on mutation rates in patients without PD on ibrutinib treatment are limited. EXPERIMENTAL DESIGN: We evaluated frequency and time to detection of BTK and PLCG2 mutations in peripheral blood samples from 388 patients with previously untreated (n = 238) or relapsed/refractory (n = 150) CLL across five clinical trials. RESULTS: With median follow-up of 35 months (range, 0-72) without PD at last sampling, mutations in BTK (3%), PLCG2 (2%), or both genes (1%) were rare in previously untreated patients. With median follow-up of 35 months (range, 1-70) without PD at last sample, mutations in BTK (30%), PLCG2 (7%), or both genes (5%) were more common in patients with relapsed/refractory CLL. Median time to first detection of BTK C481S mutation was not reached in previously untreated patients and was >5 years in patients with relapsed/refractory CLL. Among patients evaluable at PD, previously untreated patients (n = 12) had lower rates than those with relapsed/refractory disease (n = 45) of BTK (25% vs. 49%) and PLCG2 mutations (8% vs. 13%). Time from first detection of BTK C481S mutation to PD was 11.3 months in 1 previously untreated patient and median 8.5 months (range, 0-35.7) among 23 patients with relapsed/refractory CLL. CONCLUSIONS: This systematic investigation describes development of mutations over time in patients without PD and informs the potential clinical opportunity to optimize ongoing benefits for such patients.
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- 2023
44. Urbanisation generates multiple trait syndromes for terrestrial animal taxa worldwide.
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Hahs, Amy, Fournier, Bertrand, Aronson, Myla, Nilon, Charles, Herrera-Montes, Adriana, Salisbury, Allyson, Threlfall, Caragh, Rega-Brodsky, Christine, Lepczyk, Christopher, La Sorte, Frank, MacGregor-Fors, Ian, Scott MacIvor, J, Jung, Kirsten, Piana, Max, Williams, Nicholas, Knapp, Sonja, Vergnes, Alan, Acevedo, Aldemar, Gainsbury, Alison, Rainho, Ana, Hamer, Andrew, Shwartz, Assaf, Voigt, Christian, Lewanzik, Daniel, Lowenstein, David, OBrien, David, Tommasi, Desiree, Pineda, Eduardo, Carpenter, Ela, Belskaya, Elena, Lövei, Gábor, Makinson, James, Coleman, Joanna, Sadler, Jon, Shroyer, Jordan, Shapiro, Julie, Baldock, Katherine, Ksiazek-Mikenas, Kelly, Matteson, Kevin, Barrett, Kyle, Siles, Lizette, Aguirre, Luis, Armesto, Luis, Zalewski, Marcin, Herrera-Montes, Maria, Obrist, Martin, Tonietto, Rebecca, Gagné, Sara, Hinners, Sarah, Latty, Tanya, Surasinghe, Thilina, Sattler, Thomas, Magura, Tibor, Ulrich, Werner, Elek, Zoltan, Castañeda-Oviedo, Jennifer, Torrado, Ricardo, Kotze, D, and Moretti, Marco
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Animals ,Bees ,Urbanization ,Syndrome ,Ecosystem ,Biodiversity ,Birds ,Chiroptera - Abstract
Cities can host significant biological diversity. Yet, urbanisation leads to the loss of habitats, species, and functional groups. Understanding how multiple taxa respond to urbanisation globally is essential to promote and conserve biodiversity in cities. Using a dataset encompassing six terrestrial faunal taxa (amphibians, bats, bees, birds, carabid beetles and reptiles) across 379 cities on 6 continents, we show that urbanisation produces taxon-specific changes in trait composition, with traits related to reproductive strategy showing the strongest response. Our findings suggest that urbanisation results in four trait syndromes (mobile generalists, site specialists, central place foragers, and mobile specialists), with resources associated with reproduction and diet likely driving patterns in traits associated with mobility and body size. Functional diversity measures showed varied responses, leading to shifts in trait space likely driven by critical resource distribution and abundance, and taxon-specific trait syndromes. Maximising opportunities to support taxa with different urban trait syndromes should be pivotal in conservation and management programmes within and among cities. This will reduce the likelihood of biotic homogenisation and helps ensure that urban environments have the capacity to respond to future challenges. These actions are critical to reframe the role of cities in global biodiversity loss.
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- 2023
45. A Pilot Study of Family-Integrated Care (FICare) in Critically Ill Preterm and Term Infants in the NICU: FICare Plus.
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Ansari, Najmus, Tomlinson, Christopher, Colucci, Anna, OBrien, Karel, and Franck, Linda
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critically ill neonates ,family-integrated care ,feasibility ,safety - Abstract
Family-integrated care (FICare) is associated with improved developmental outcomes and decreased parental mental health risks in stable preterm infants. However, less is known about its application in critically ill infants who are at greater risk for adverse outcomes. The objective of this study was to assess the safety and feasibility of implementation of an augmented FICare program, FICare Plus, in critically ill infants in the first few weeks of life. Resources were specifically developed for staff and parents to support earlier parental engagement in infant care. Infant health outcomes and standardized measures of parental stress, anxiety and parenting self-efficacy were also collected using standardized questionnaires: State -Trait Anxiety Inventory (STAI), Parental Stressor Scale: NICU (PSS: NICU), Perceived Parenting Self-Efficacy Tool and Family Centered Care Survey. The t-test or Wilcoxon rank-sum test were used to compare continuous variables, while the Chi-square or Fisher exact test were used for categorical variables, respectively. In this prospective cohort study, 41 critically ill infants were enrolled: 17 in standard care (SC) and 24 in the FICare Plus group. The tools and procedures developed for FICare Plus successfully supported greater engagement in the care of their infants with no increase in adverse events and no increase in parental stress. Parents in the FICare Plus cohort felt confident to participate in their infants care. The staff also found this model of care acceptable and well adopted. Preliminary measures of infant efficacy were similar in both groups. Total anxiety scores were high among all parents at enrollment (87 (67-94) vs. 70.5 (66-86); p-value 0.22). However, the scores prior to discharge were lower in FICare Plus group (78 (71-90) vs. 63 (52-74.5); p-value 0.02). This pilot study showed that it is feasible and safe to implement family-integrated care in critically ill infants.
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- 2023
46. Pulmonary Artery Catheter Use and Mortality in the Cardiac Intensive Care Unit.
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Kadosh, Bernard, Berg, David, Bohula, Erin, Park, Jeong-Gun, Baird-Zars, Vivian, Alviar, Carlos, Alzate, James, Barnett, Christopher, Barsness, Gregory, Burke, James, Chaudhry, Sunit-Preet, Daniels, Lori, DeFilippis, Andrew, Delicce, Anthony, Fordyce, Christopher, Ghafghazi, Shahab, Gidwani, Umesh, Goldfarb, Michael, Katz, Jason, Keeley, Ellen, Kenigsberg, Benjamin, Kontos, Michael, Lawler, Patrick, Leibner, Evan, Menon, Venu, Metkus, Thomas, Miller, P, OBrien, Connor, Papolos, Alexander, Prasad, Rajnish, Shah, Kevin, Sinha, Shashank, Snell, R, So, Derek, Solomon, Michael, Ternus, Bradley, Teuteberg, Jeffrey, Toole, Joseph, van Diepen, Sean, Morrow, David, and Roswell, Robert
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cardiac intensive care ,pulmonary artery catheter ,shock ,Humans ,Pulmonary Artery ,Heart Failure ,Intensive Care Units ,Hospitalization ,Hospital Mortality ,Catheters - Abstract
BACKGROUND: The appropriate use of pulmonary artery catheters (PACs) in critically ill cardiac patients remains debated. OBJECTIVES: The authors aimed to characterize the current use of PACs in cardiac intensive care units (CICUs) with attention to patient-level and institutional factors influencing their application and explore the association with in-hospital mortality. METHODS: The Critical Care Cardiology Trials Network is a multicenter network of CICUs in North America. Between 2017 and 2021, participating centers contributed annual 2-month snapshots of consecutive CICU admissions. Admission diagnoses, clinical and demographic data, use of PACs, and in-hospital mortality were captured. RESULTS: Among 13,618 admissions at 34 sites, 3,827 were diagnosed with shock, with 2,583 of cardiogenic etiology. The use of mechanical circulatory support and heart failure were the patient-level factors most strongly associated with a greater likelihood of the use of a PAC (OR: 5.99 [95% CI: 5.15-6.98]; P < 0.001 and OR: 3.33 [95% CI: 2.91-3.81]; P
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- 2023
47. Experiences of transgender and gender diverse patients in emergency psychiatric settings: A scoping review.
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Hirschtritt, Matthew, Tahir, Peggy, Kalapatapu, Raj, and OBrien, Megan
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emergency psychiatric services ,gender minority ,gender nonconforming ,mental health ,queer ,transgender - Abstract
OBJECTIVE: This scoping review aims to characterize what is known about transgender and gender diverse (TGD) individuals in emergency psychiatric settings and identify what gaps persist in this literature. METHODS: A search of 4 electronic databases (PubMed, Web of Science, GenderWatch, and PsycINFO) was used for data collection. Included were studies that looked at TGD individuals presenting to a psychiatric emergency department (ED) or ED with a primary mental health concern. Study screening progress was documented in a Preferred Reporting Items for Systematic reviews and Meta-Analyses flow chart. A total of 232 titles and abstracts were screened, 38 full texts were evaluated for eligibility, and 10 studies were included. RESULTS: The studies reviewed identified mental health vulnerabilities unique to the TGD population, including service denial in health care settings, gender dysphoria, increased rates of non-suicidal self-injury, and in some studies an increase in suicidality. Societal inequities, including the risk of discrimination and residential instability, were also revealed. A subset of the studies identified best practices in caring for this population, including the use of non-judgmental, affirmative, and inclusive language, and on a structural level creating emergency environments that are confidential, inclusive, and therapeutic for these individuals. CONCLUSIONS: There is limited information on TGD individuals in emergency psychiatric settings, and thus it is difficult to form strong conclusions. However, the current evidence available suggests possible inequities in this population. Three major themes with regards to TGD individuals in emergency psychiatric settings were identified: mental health vulnerabilities, societal inequities, and best practices in caring for this population. Overall, there is a scarcity of literature in this field, and further research on the experiences of this population is needed to inform clinical practice.
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- 2023
48. Stable Quantum-Correlated Many Body States through Engineered Dissipation
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Mi, X., Michailidis, A. A., Shabani, S., Miao, K. C., Klimov, P. V., Lloyd, J., Rosenberg, E., Acharya, R., Aleiner, I., Andersen, T. I., Ansmann, M., Arute, F., Arya, K., Asfaw, A., Atalaya, J., Bardin, J. C., Bengtsson, A., Bortoli, G., Bourassa, A., Bovaird, J., Brill, L., Broughton, M., Buckley, B. B., Buell, D. A., Burger, T., Burkett, B., Bushnell, N., Chen, Z., Chiaro, B., Chik, D., Chou, C., Cogan, J., Collins, R., Conner, P., Courtney, W., Crook, A. L., Curtin, B., Dau, A. G., Debroy, D. M., Barba, A. Del Toro, Demura, S., Di Paolo, A., Drozdov, I. K., Dunsworth, A., Erickson, C., Faoro, L., Farhi, E., Fatemi, R., Ferreira, V. S., Forati, L. F. Burgos E., Fowler, A. G., Foxen, B., Genois, E., Giang, W., Gidney, C., Gilboa, D., Giustina, M., Gosula, R., Gross, J. A., Habegger, S., Hamilton, M. C., Hansen, M., Harrigan, M. P., Harrington, S. D., Heu, P., Hoffmann, M. R., Hong, S., Huang, T., Huff, A., Huggins, W. J., Ioffe, L. B., Isakov, S. V., Iveland, J., Jeffrey, E., Jiang, Z., Jones, C., Juhas, P., Kafri, D., Kechedzhi, K., Khattar, T., Khezri, M., Kieferova, M., Kim, S., Kitaev, A., Klots, A. R., Korotkov, A. N., Kostritsa, F., Kreikebaum, J. M., Landhuis, D., Laptev, P., Lau, K. -M., Laws, L., Lee, J., Lee, K. W., Lensky, Y. D., Lester, B. J., Lill, A. T., Liu, W., Locharla, A., Malone, F. D., Martin, O., McClean, J. R., McEwen, M., Mieszala, A., Montazeri, S., Morvan, A., Movassagh, R., Mruczkiewicz, W., Neeley, M., Neill, C., Nersisyan, A., Newman, M., Ng, J. H., Nguyen, A., Nguyen, M., Niu, M. Y., OBrien, T. E., Opremcak, A., Petukhov, A., Potter, R., Pryadko, L. P., Quintana, C., Rocque, C., Rubin, N. C., Saei, N., Sank, D., Sankaragomathi, K., Satzinger, K. J., Schurkus, H. F., Schuster, C., Shearn, M. J., Shorter, A., Shutty, N., Shvarts, V., Skruzny, J., Smith, W. C., Somma, R., Sterling, G., Strain, D., Szalay, M., Torres, A., Vidal, G., Villalonga, B., Heidweiller, C. V., White, T., Woo, B. W. K., Xing, C., Yao, Z. J., Yeh, P., Yoo, J., Young, G., Zalcman, A., Zhang, Y., Zhu, N., Zobrist, N., Neven, H., Babbush, R., Bacon, D., Boixo, S., Hilton, J., Lucero, E., Megrant, A., Kelly, J., Chen, Y., Roushan, P., Smelyanskiy, V., and Abanin, D. A.
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Quantum Physics - Abstract
Engineered dissipative reservoirs have the potential to steer many-body quantum systems toward correlated steady states useful for quantum simulation of high-temperature superconductivity or quantum magnetism. Using up to 49 superconducting qubits, we prepared low-energy states of the transverse-field Ising model through coupling to dissipative auxiliary qubits. In one dimension, we observed long-range quantum correlations and a ground-state fidelity of 0.86 for 18 qubits at the critical point. In two dimensions, we found mutual information that extends beyond nearest neighbors. Lastly, by coupling the system to auxiliaries emulating reservoirs with different chemical potentials, we explored transport in the quantum Heisenberg model. Our results establish engineered dissipation as a scalable alternative to unitary evolution for preparing entangled many-body states on noisy quantum processors.
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- 2023
- Full Text
- View/download PDF
49. The Co-Ordinated Radio and Infrared Survey for High-Mass Star Formation. V. The CORNISH-South Survey and Catalogue
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Irabor, T., Hoare, M. G., Burton, M., Cotton, W. D., Diamond, P., Dougherty, S., Ellingsen, S. P., Fender, R., Fuller, G. A., Garrington, S., Goldsmith, P. F., Green, J., Gunn, A. G., Jackson, J., Kurtz, S., Lumsden, S. L., Marti, J., McDonald, I., Molinari, S., Moore, T. J., Mutale, M., Muxlow, T., OBrien, T., Oudmaijer, R. D., Paladini, R., Pandian, J. D., Paredes, J. M., Richards, A. M. S., Sanchez-Monge, A., Spencer, R., Thompson, M. A., Umana, G., Urquhart, J. S., Wieringa, M., and Zijlstra, A.
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Astrophysics - Astrophysics of Galaxies ,Astrophysics - Solar and Stellar Astrophysics - Abstract
We present the first high spatial resolution radio continuum survey of the southern Galactic plane. The CORNISH project has mapped the region defined by $295^{\circ} < l < 350^{\circ}$; $|b| < 1^{\circ}$ at 5.5-GHz, with a resolution of 2.5$^{''}$ (FWHM). As with the CORNISH-North survey, this is designed to primarily provide matching radio data to the Spitzer GLIMPSE survey region. The CORNISH-South survey achieved a root mean square noise level of $\sim$ 0.11 mJy beam$^{-1}$, using the 6A configuration of the Australia Telescope Compact Array (ATCA). In this paper, we discuss the observations, data processing and measurements of the source properties. Above a 7$\sigma$ detection limit, 4701 sources were detected, and their ensemble properties show similar distributions with their northern counterparts. The catalogue is highly reliable and is complete to 90 per cent at a flux density level of 1.1 mJy. We developed a new way of measuring the integrated flux densities and angular sizes of non-Gaussian sources. The catalogue primarily provides positions, flux density measurements and angular sizes. All sources with IR counterparts at 8$\mu m$ have been visually classified, utilizing additional imaging data from optical, near-IR, mid-IR, far-IR and sub-millimetre galactic plane surveys. This has resulted in the detection of 524 H II regions of which 255 are ultra-compact H II regions, 287 planetary nebulae, 79 radio stars and 6 massive young stellar objects. The rest of the sources are likely to be extra-galactic. These data are particularly important in the characterization and population studies of compact ionized sources such as UCHII regions and PNe towards the Galactic mid-plane.
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- 2023
- Full Text
- View/download PDF
50. Prognostic value of different anthropometric indices over different measurement intervals to predict mortality in 6-59-month-old children.
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Briend, André, Myatt, Mark, Berkley, James, Black, Robert, Boyd, Erin, Garenne, Michel, Lelijveld, Natasha, Isanaka, Sheila, McDonald, Christine, Mwangwome, Martha, OBrien, Kieran, Schwinger, Catherine, Stobaugh, Heather, Taneja, Sunita, West, Keith, and Khara, Tanya
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Anthropometry ,Mid-upper arm circumference ,Mortality ,Stunting ,Underweight ,Wasting ,Humans ,Child ,Infant ,Child ,Preschool ,Body Weight ,Prospective Studies ,Prognosis ,Body Height ,Anthropometry ,Arm - Abstract
OBJECTIVE: To compare the prognostic value of mid-upper arm circumference (MUAC), weight-for-height Z-score (WHZ) and weight-for-age Z-score (WAZ) for predicting death over periods of 1, 3 and 6 months follow-up in children. DESIGN: Pooled analysis of twelve prospective studies examining survival after anthropometric assessment. Sensitivity and false-positive ratios to predict death within 1, 3 and 6 months were compared for three individual anthropometric indices and their combinations. SETTING: Community-based, prospective studies from twelve countries in Africa and Asia. PARTICIPANTS: Children aged 6-59 months living in the study areas. RESULTS: For all anthropometric indices, the receiver operating characteristic curves were higher for shorter than for longer durations of follow-up. Sensitivity was higher for death with 1-month follow-up compared with 6 months by 49 % (95 % CI (30, 69)) for MUAC < 115 mm (P < 0·001), 48 % (95 % CI (9·4, 87)) for WHZ < -3 (P < 0·01) and 28 % (95 % CI (7·6, 42)) for WAZ < -3 (P < 0·005). This was accompanied by an increase in false positives of only 3 % or less. For all durations of follow-up, WAZ < -3 identified more children who died and were not identified by WHZ < -3 or by MUAC < 115 mm, 120 mm or 125 mm, but the use of WAZ < -3 led to an increased false-positive ratio up to 16·4 % (95 % CI (12·0, 20·9)) compared with 3·5 % (95 % CI (0·4, 6·5)) for MUAC < 115 mm alone. CONCLUSIONS: Frequent anthropometric measurements significantly improve the identification of malnourished children with a high risk of death without markedly increasing false positives. Combining two indices increases sensitivity but also increases false positives among children meeting case definitions.
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- 2023
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