233,700 results on '"Timothy J"'
Search Results
102. Article III: Concerning the Son of God
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Timothy J. Wengert and Robert Kolb
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- 2024
103. Article IV: Concerning Justification
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Timothy J. Wengert and Robert Kolb
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- 2024
104. Article I: Concerning God
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Timothy J. Wengert and Robert Kolb
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- 2024
105. Article II: Concerning Original Sin
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Timothy J. Wengert and Robert Kolb
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- 2024
106. Introduction
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Timothy J. Wengert and Robert Kolb
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- 2024
107. The Preface
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Timothy J. Wengert and Robert Kolb
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- 2024
108. Abbreviations
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Timothy J. Wengert and Robert Kolb
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- 2024
109. Front Matter
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Timothy J. Wengert and Robert Kolb
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- 2024
110. Methods and participant characteristics in the Cancer Risk in Vegetarians Consortium: a cross-sectional analysis across 11 prospective studies
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Yashvee Dunneram, Jia Yi Lee, Cody Z. Watling, Gary E. Fraser, Fayth Miles, Dorairaj Prabhakaran, Krithiga Shridhar, Dimple Kondal, Viswanathan Mohan, Mohammed K. Ali, Kabayam M. Venkat Narayan, Nikhil Tandon, Tammy Y. N. Tong, Tina H. T. Chiu, Ming-Nan Lin, Chin-Lon Lin, Hsin-Chou Yang, Yu-Jen Liang, Darren C. Greenwood, Huaidong Du, Zhengming Chen, Canqing Yu, Maria G. Kakkoura, Gillian K. Reeves, Keren Papier, Sarah Floud, Rashmi Sinha, Linda M. Liao, Erikka Loftfield, Janet E. Cade, Timothy J. Key, and Aurora Perez-Cornago
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Vegetarians ,Vegans ,Meat eaters ,Poultry eaters ,Pescatarians ,Consortium ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background The associations of vegetarian diets with risks for site-specific cancers have not been estimated reliably due to the low number of vegetarians in previous studies. Therefore, the Cancer Risk in Vegetarians Consortium was established. The aim is to describe and compare the baseline characteristics between non-vegetarian and vegetarian diet groups and between the collaborating studies. Methods We harmonised individual-level data from 11 prospective cohort studies from Western Europe, North America, South Asia and East Asia. Comparisons of food intakes, sociodemographic and lifestyle factors were made between diet groups and between cohorts using descriptive statistics. Results 2.3 million participants were included; 66% women and 34% men, with mean ages at recruitment of 57 (SD: 7.8) and 57 (8.6) years, respectively. There were 2.1 million meat eaters, 60,903 poultry eaters, 44,780 pescatarians, 81,165 vegetarians, and 14,167 vegans. Food intake differences between the diet groups varied across the cohorts; for example, fruit and vegetable intakes were generally higher in vegetarians than in meat eaters in all the cohorts except in China. BMI was generally lower in vegetarians, particularly vegans, except for the cohorts in India and China. In general, but with some exceptions, vegetarians were also more likely to be highly educated and physically active and less likely to smoke. In the available resurveys, stability of diet groups was high in all the cohorts except in China. Conclusions Food intakes and lifestyle factors of both non-vegetarians and vegetarians varied markedly across the individual cohorts, which may be due to differences in both culture and socioeconomic status, as well as differences in questionnaire design. Therefore, care is needed in the interpretation of the impacts of vegetarian diets on cancer risk.
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- 2024
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111. The structure and catalytic mechanism of a pseudoknot-containing hammerhead ribozyme
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Xuelin Zhan, Timothy J. Wilson, Zhenzhen Li, Jingjing Zhang, Yili Yang, David M. J. Lilley, and Yijin Liu
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Science - Abstract
Abstract We have determined the crystal structure of a pseudoknot (PK)-containing hammerhead ribozyme that closely resembles the pistol ribozyme, with essentially identical secondary structure and connectivity. The activity is more sensitive to deletion of the G8 2’OH than to the absence of magnesium ions, indicating that the catalytic mechanism is the same as the extended hammerhead, and distinct from the pistol ribozyme. Here we show that nucleophilic attack is almost perfectly in-line, and the G8 2’OH is well positioned to act as general acid, being directed towards the O5’ leaving group, and 2.9 Å away from it. Despite the similarity in overall structure to the pistol ribozyme, the local structure close to the cleavage site differs, and the PK hammerhead retains its unique mechanistic identity and demonstrates enhanced activity over other hammerhead ribozymes under standard conditions.
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- 2024
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112. Directed crystalline symmetry transformation of blue-phase liquid crystals by reverse electrostriction
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Tsung-Hsien Lin, Duan-Yi Guo, Chun-Wei Chen, Ting-Mao Feng, Wen-Xin Zeng, Po-Chang Chen, Liang-Ying Wu, Wen-Ming Guo, Li-Min Chang, Hung-Chang Jau, Chun-Ta Wang, Timothy J. Bunning, and Iam Choon Khoo
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Science - Abstract
Abstract Soft-matter-based photonic crystals like blue-phase liquid crystals (BPLC) have potential applications in wide-ranging photonic and bio-chemical systems. To date, however, there are limitations in the fabrication of large monocrystalline BPLCs. Traditional crystal-growth process involves the transition from a high-temperature disordered phase to an ordered (blue) phase and is generally slow (takes hours) with limited achievable lattice structures, and efforts to improve molecular alignment through post-crystallization field application typically prove ineffective. Here we report a systematic study on the molecular self-assembly dynamics of BPLC starting from a highly ordered phase in which all molecules are unidirectionally aligned by a strong electric field. We have discovered that, near the high-temperature end of the blue phase, if the applied field strength is then switched to an intermediate level or simply turned off, large-area monocrystalline BPLCs of various symmetries (tetragonal, orthorhombic, cubic) can be formed in minutes. Subsequent temperature tuning of the single crystal at a fixed applied field allows access to different lattice parameters and the formation of never-before-seen monoclinic structures. The formed crystals remain stable upon field removal. The diversity of stable monocrystalline BPLCs with widely tunable crystalline symmetries, band structures, and optical dispersions will significantly improve and expand their application potentials.
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- 2024
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113. The burdens attributable to headache disorders in Cameroon: national estimates from a population-based door-to-door survey, including a headache-care needs assessment
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Callixte Kuate Tegueu, Anastase Dzudie Tamdja, Franklin Kom, Blaise Forgwa Barche, Peter Ebasone, Mélanie Magnerou, Paul Mbonda, Yannick Fogang, Daniel Massi Gams, Jacques Doumbe, Andreas Husøy, and Timothy J. Steiner
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Headache ,Migraine ,Tension-type headache ,Medication-overuse headache ,Epidemiology ,Burden ,Medicine - Abstract
Abstract Background We have previously shown headache to be highly prevalent in Cameroon. Here we present the attributed burden. We also perform a headache-care needs assessment. Methods This was a cross-sectional survey among adults (18–65 years) in the general population. Multistage cluster-sampling in four regions (Centre, Littoral, West and Adamawa), home to almost half the country’s population, generated a representative sample. We used the standardised methodology of the Global Campaign against Headache, including the HARDSHIP questionnaire, with diagnostic questions based on ICHD-3 and enquiries into symptom burden, impaired participation (lost productivity and disengagement from social activity), quality of life (QoL) using WHOQoL-8, and willingness to pay (WTP) for effective care. We defined headache care “need” in terms of likelihood of benefit, counting all those with probable medication-overuse headache (pMOH) or other headache on ≥ 15 days/month (H15 +), with migraine on ≥ 3 days/month, or with migraine or tension-type headache (TTH) and meeting either of two criteria: a) proportion of time in ictal state (pTIS) > 3.3% and intensity ≥ 2 (moderate-to-severe); or b) ≥ 3 lost days from paid and/or household work in the preceding 3 months. Results Among 3,100 participants, mean frequency of any headache was 6.7 days/month, mean duration 13.0 h and mean intensity 2.3 (moderate). Mean pTIS was 9.8%, which (with prevalence factored in) diluted to 6.1–7.4% of all time in the population. Most time was spent with H15 + (5.3% of all time), followed by TTH (1.0%) and migraine (0.8%). For all headache, mean lost days/3 months were 3.4 from paid work, 3.0 from household work and 0.6 from social/leisure activities, diluting to 2.5, 2.2 and 0.6 days/3 months in the population. QoL (no headache: 27.9/40) was adversely impacted by pMOH (25.0) and other H15 + (26.0) but not by migraine (28.0) or TTH (28.0). WTP (maximally XAF 4,462.40 [USD 7.65] per month) was not significantly different between headache types. An estimated 37.0% of adult Cameroonians need headache care. Conclusion Headache disorders in Cameroon are not only prevalent but also associated with high attributed burden, with heavily impaired participation. Headache-care needs are very high, but so are the economic costs of not providing care.
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- 2024
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114. Associations of fruit intake with adiposity and cardiometabolic biomarkers in UK Biobank
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Eirini Trichia, Fiona MacLean, Aurora Perez-Cornago, Tammy Y. N. Tong, Jonathan R. Emberson, Timothy J. Key, Sarah Lewington, and Jennifer L. Carter
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Fruit ,Cardiometabolic ,Adiposity ,Lipids ,Blood pressure ,Glycaemia ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background Fruit consumption has been associated with a lower cardiovascular disease (CVD) risk but the underlying mechanisms are unclear. We investigated the cross-sectional and prospective associations of fruit consumption with markers of adiposity, blood pressure, lipids, low-grade inflammation, glycaemia, and oxidative stress. Methods The main analyses included 365 534 middle-aged adults from the UK Biobank at baseline, of whom 11 510, and 38 988 were included in the first and second follow-up respectively, free from CVD and cancer at baseline. Fruit consumption frequency at baseline was assessed using a questionnaire. We assessed the cross-sectional and prospective associations of fruit with adiposity (body mass index, waist circumference and %body fat), systolic and diastolic blood pressure, lipids (low-density and high-density lipoproteins, triglycerides and apolipoprotein B), glycaemia (haemoglobin A1c), low-grade inflammation (C-reactive protein) and oxidative stress (gamma-glutamyl-transferase) using linear regression models adjusted for socioeconomic and lifestyle factors. Analyses were repeated in a subset with two to five complete 24-h dietary assessments (n = 26 596) allowing for adjustment for total energy intake. Results Fruit consumption at baseline generally showed weak inverse associations with adiposity and biomarkers at baseline. Most of these relationships did not persist through follow-up, except for inverse associations with diastolic blood pressure, C-reactive protein, gamma-glutamyl transferase and adiposity. However, for most mechanisms, mean levels varied by less than 0.1 standard deviations (SD) between high and low fruit consumption (> 3 vs
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- 2024
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115. Advancing age and the rs6265 BDNF SNP are permissive to graft-induced dyskinesias in parkinsonian rats
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Natosha M. Mercado, Carlye Szarowicz, Jennifer A. Stancati, Caryl E. Sortwell, Samuel A. Boezwinkle, Timothy J. Collier, Margaret E. Caulfield, and Kathy Steece-Collier
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Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Abstract The rs6265 single nucleotide polymorphism (SNP) in the gene for brain-derived neurotrophic factor is a common variant that alters therapeutic outcomes for individuals with Parkinson’s disease (PD). We previously investigated the effects of this SNP on the experimental therapeutic approach of neural grafting, demonstrating that young adult parkinsonian rats carrying the variant Met allele exhibited enhanced graft function compared to wild-type rats and also exclusively developed aberrant graft-induced dyskinesias (GID). Aging is the primary risk factor for PD and reduces graft efficacy. Here we investigated whether aging interacts with this SNP to further alter cell transplantation outcomes. We hypothesized that aging would reduce enhancement of graft function associated with this genetic variant and exacerbate GID in all grafted subjects. Unexpectedly, beneficial graft function was maintained in aged rs6265 subjects. However, aging was permissive to GID induction, regardless of genotype, with the greatest incidence and severity found in rs6265-expressing animals.
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- 2024
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116. The prevalence of headache disorders in children and adolescents in Benin: a schools-based study
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Mendinatou Agbetou Houessou, Thierry Adoukonou, Willy Tchuenga Fokom, Nelly Dovoedo, Tayyar Şaşmaz, Fatma Bozdağ, Derya Uluduz, and Timothy J. Steiner
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Child and adolescent headache ,Migraine ,Tension-type headache ,Medication-overuse headache ,Undifferentiated headache ,Epidemiology ,Medicine - Abstract
Abstract Background A global schools-based programme within the Global Campaign against Headache is estimating the burden of headache in children (6–11 years) and adolescents (12–17 years), cluster-sampling the world by conducting national studies in all world regions. Its purpose is to complement population-based studies in adults, adding to knowledge of the burden of headache and informing educational and health policies. This study in Benin was the third in the programme from sub-Saharan Africa (SSA). Methods We followed the generic protocol for the global study. In a cross-sectional survey, the child and adolescent versions of the Headache-Attributed Restriction, Disability, Social Handicap and Impaired Participation (HARDSHIP) structured questionnaire were administered to pupils within their classes in 16 schools selected from across the country to be representative of its diversities. Headache diagnostic questions were based on ICHD-3 criteria but for the inclusion of undifferentiated headache (UdH). Results Very large proportions of pupils were absent on the survey days. The sampled population defined by class registers totalled 11,802 pupils, of whom only 2,488 were present. A further 193 pupils (or their parents) declined the survey. The surveyed sampled (N = 2,295; males 1,156 [50.4%], females 1,139 [49.6%]) included 1,081 children (47.1%) and 1,214 adolescents (52.9%), with a non-participating proportion (193/2,488) of 7.8%. Headache ever was reported by 97.3% of the sample. Age- and gender-adjusted 1-year prevalences, according to responses given, were 53.4% for migraine (almost three quarters of this being probable migraine), 21.3% for tension-type headache, 8.2% for UdH, 1.0% for probable medication-overuse headache (pMOH) and 2.6% for other headache on ≥ 15 days/month (H15+). Both pMOH and other H15 + were substantially more prevalent among adolescents. Conclusion The finding for migraine is anomalous, but, within this series of studies, the same was found in Zambia and similar in Ethiopia, both in SSA. While many cases identified as probable migraine, especially among children, might better have been diagnosed as UdH, the true prevalence of migraine almost certainly exceeds 21%. Regardless of diagnosis, headache is very common among children and adolescents in Benin. The study sounds an alarm with regard to pMOH as a developing problem pre-adulthood.
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- 2024
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117. Generation of Eco-Friendly and Disease-Resistant Channel Catfish (Ictalurus punctatus) Harboring the Alligator Cathelicidin Gene via CRISPR/Cas9 Engineering
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Jinhai Wang, Baofeng Su, De Xing, Timothy J. Bruce, Shangjia Li, Logan Bern, Mei Shang, Andrew Johnson, Rhoda Mae C. Simora, Michael Coogan, Darshika U. Hettiarachchi, Wenwen Wang, Tasnuba Hasin, Jacob Al-Armanazi, Cuiyu Lu, and Rex A. Dunham
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Genome editing ,ssODN ,dsDNA ,Antimicrobial peptide ,Reproductive confinement ,Aquaculture ,Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
As a precise and versatile tool for genome manipulation, the clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein 9 (Cas9) platform holds promise for modifying fish traits of interest. With the aim of reducing transgene introgression and controlling reproduction, upscaled disease resistance and reproductive intervention in catfish species have been studied to lower the potential environmental risks of the introgression of escapees as transgenic animals. Taking advantage of the CRISPR/Cas9-mediated system, we succeeded in integrating the cathelicidin gene (As-Cath) from an alligator (Alligator sinensis) into the target luteinizing hormone (lh) locus of channel catfish (Ictalurus punctatus) using two delivery systems assisted by double-stranded DNA (dsDNA) and single-stranded oligodeoxynucleotides (ssODNs), respectively. In this study, high knock in (KI) efficiency (22.38%, 64/286) but low on-target events was achieved using the ssODN strategy, whereas adopting a dsDNA as the donor template led to an efficient on-target KI (10.80%, 23/213). The on-target KI of As-Cath was instrumental in establishing the lh knockout (LH–_As-Cath+) catfish line, which displayed heightened disease resistance and reduced fecundity compared with the wild-type (WT) sibling fish. Furthermore, administration of human chorionic gonadotropin (HCG) and luteinizing hormone-releasing hormone analogue (LHRHa) can restore the reproduction of the transgenic fish line. Overall, we replaced the lh gene with an alligator cathelicidin transgene and then administered hormone therapy to move towards complete reproductive control of disease-resistant transgenic catfish in an environmentally responsible manner. This strategy not only effectively improves consumer-valued traits but also guards against unwanted introgression, providing a breakthrough in aquaculture genetics to confine fish reproduction and prevent the establishment of transgenic or domestic genotypes in the natural environment.
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- 2024
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118. Psychophysiological Insights into Child-Centered Play Therapy for Trauma: A Case Study
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Kristi L. Perryman, Samantha Robinson, Timothy J. Schoonover, and Julia Conroy
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adverse childhood experiences ,childhood trauma ,child-centered play therapy ,neuro-informed counseling ,psychophysiological ,Psychology ,BF1-990 - Abstract
Existing literature thoroughly reviews the detrimental consequences that adverse childhood experiences (ACEs) have physically, emotionally, neurobiologically, and financially. It is imperative to develop effective treatments that offer a sense of hope to children who have been impacted. The established relationship between high ACE scores and physiological hyperarousal due to emotional dysregulation is clear in the literature. This relationship indicates that taking psychophysiological measures may be an effective method of gauging the effectiveness of trauma treatments. This study measured the heart rate of a child who had experienced multiple ACEs, during 16 child-centered play therapy (CCPT) sessions, using the Empatica (E4) wristband. Bayesian change point analysis was conducted and multiple changes in the heart rate mean were detected and identified within each session’s time series. Additionally, changes in heart rate variability during the 16 sessions were observed and points of interest, e.g., highest and lowest observed heart rates, were noted. Results suggested the number of breakpoints in the heart rate means within each session, as well as the location, i.e., the time of each breakpoint, so that each significantly detectable change in heart rate mean as well as sessions of noted differences in heart rate variability were discussed alongside what was occurring within the video recorded sessions.
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- 2024
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119. Identifying longitudinal cognitive resilience from cross-sectional amyloid, tau, and neurodegeneration
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Rory Boyle, Diana L. Townsend, Hannah M. Klinger, Catherine E. Scanlon, Ziwen Yuan, Gillian T. Coughlan, Mabel Seto, Zahra Shirzadi, Wai-Ying Wendy Yau, Roos J. Jutten, Christoph Schneider, Michelle E. Farrell, Bernard J. Hanseeuw, Elizabeth C. Mormino, Hyun-Sik Yang, Kathryn V. Papp, Rebecca E. Amariglio, Heidi I. L. Jacobs, Julie C. Price, Jasmeer P. Chhatwal, Aaron P. Schultz, Michael J. Properzi, Dorene M. Rentz, Keith A. Johnson, Reisa A. Sperling, Timothy J. Hohman, Michael C. Donohue, Rachel F. Buckley, and for the Alzheimer’s Disease Neuroimaging Initiative
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Longitudinal analysis ,Alzheimer’s disease ,Amyloid ,Tau ,PET ,MRI ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Abstract Background Leveraging Alzheimer’s disease (AD) imaging biomarkers and longitudinal cognitive data may allow us to establish evidence of cognitive resilience (CR) to AD pathology in-vivo. Here, we applied latent class mixture modeling, adjusting for sex, baseline age, and neuroimaging biomarkers of amyloid, tau and neurodegeneration, to a sample of cognitively unimpaired older adults to identify longitudinal trajectories of CR. Methods We identified 200 Harvard Aging Brain Study (HABS) participants (mean age = 71.89 years, SD = 9.41 years, 59% women) who were cognitively unimpaired at baseline with 2 or more timepoints of cognitive assessment following a single amyloid-PET, tau-PET and structural MRI. We examined latent class mixture models with longitudinal cognition as the dependent variable and time from baseline, baseline age, sex, neocortical Aβ, entorhinal tau, and adjusted hippocampal volume as independent variables. We then examined group differences in CR-related factors across the identified subgroups from a favored model. Finally, we applied our favored model to a dataset from the Alzheimer’s Disease Neuroimaging Initiative (ADNI; n = 160, mean age = 73.9 years, SD = 7.6 years, 60% women). Results The favored model identified 3 latent subgroups, which we labelled as Normal (71% of HABS sample), Resilient (22.5%) and Declining (6.5%) subgroups. The Resilient subgroup exhibited higher baseline cognitive performance and a stable cognitive slope. They were differentiated from other groups by higher levels of verbal intelligence and past cognitive activity. In ADNI, this model identified a larger Normal subgroup (88.1%), a smaller Resilient subgroup (6.3%) and a Declining group (5.6%) with a lower cognitive baseline. Conclusion These findings demonstrate the value of data-driven approaches to identify longitudinal CR groups in preclinical AD. With such an approach, we identified a CR subgroup who reflected expected characteristics based on previous literature, higher levels of verbal intelligence and past cognitive activity.
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- 2024
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120. [18F]F-AraG imaging reveals association between neuroinflammation and brown- and bone marrow adipose tissue
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Jelena Levi, Caroline Guglielmetti, Timothy J. Henrich, John C. Yoon, Prafulla C. Gokhale, David A. Reardon, Juliet Packiasamy, Lyna Huynh, Hilda Cabrera, Marisa Ruzevich, Joseph Blecha, Michael J. Peluso, Tony L. Huynh, Sung-Min An, Mark Dornan, Anthony P. Belanger, Quang-Dé Nguyen, Youngho Seo, Hong Song, Myriam M. Chaumeil, Henry F. VanBrocklin, and Hee-Don Chae
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Biology (General) ,QH301-705.5 - Abstract
Abstract Brown and brown-like adipose tissues have attracted significant attention for their role in metabolism and therapeutic potential in diabetes and obesity. Despite compelling evidence of an interplay between adipocytes and lymphocytes, the involvement of these tissues in immune responses remains largely unexplored. This study explicates a newfound connection between neuroinflammation and brown- and bone marrow adipose tissue. Leveraging the use of [18F]F-AraG, a mitochondrial metabolic tracer capable of tracking activated lymphocytes and adipocytes simultaneously, we demonstrate, in models of glioblastoma and multiple sclerosis, the correlation between intracerebral immune infiltration and changes in brown- and bone marrow adipose tissue. Significantly, we show initial evidence that a neuroinflammation-adipose tissue link may also exist in humans. This study proposes the concept of an intricate immuno-neuro-adipose circuit, and highlights brown- and bone marrow adipose tissue as an intermediary in the communication between the immune and nervous systems. Understanding the interconnectedness within this circuitry may lead to advancements in the treatment and management of various conditions, including cancer, neurodegenerative diseases and metabolic disorders.
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- 2024
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121. Barriers to and facilitators of implementing colorectal cancer screening evidence-based interventions in federally qualified health centers: a qualitative study
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Emanuelle M. Dias, Joe R. Padilla, Paula M. Cuccaro, Timothy J. Walker, Bijal A. Balasubramanian, Lara S. Savas, Melissa A. Valerio-Shewmaker, Roshanda S. Chenier, and Maria E. Fernandez
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Barriers ,Cancer ,CFIR ,Colorectal cancer screening ,Content analysis ,Evidence-based interventions ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background There is an urgent need to increase colorectal cancer screening (CRCS) uptake in Texas federally qualified health centers (FQHCs), which serve a predominantly vulnerable population with high demands. Empirical support exists for evidence-based interventions (EBIs) that are proven to increase CRCS; however, as with screening, their use remains low in FQHCs. This study aimed to identify barriers to and facilitators of implementing colorectal cancer screening (CRCS) evidence-based interventions (EBIs) in federally qualified health centers (FQHCs), guided by the Consolidated Framework for Implementation Research (CFIR). Methods We recruited employees involved in implementing CRCS EBIs (e.g., physicians) using data from a CDC-funded program to increase the CRCS in Texas FQHCs. Through 23 group interviews, we explored experiences with practice change, CRCS promotion and quality improvement initiatives, organizational readiness, the impact of COVID-19, and the use of CRCS EBIs (e.g., provider reminders). We used directed content analysis with CFIR constructs to identify the critical facilitators and barriers. Results The analysis revealed six primary CFIR constructs that influence implementation: information technology infrastructure, innovation design, work infrastructure, performance measurement pressure, assessing needs, and available resources. Based on experiences with four recommended EBIs, participants described barriers, including data limitations of electronic health records and the design of reminder alerts targeted at deliverers and recipients of patient or provider reminders. Implementation facilitators include incentivized processes to increase provider assessment and feedback, existing clinic processes (e.g., screening referrals), and available resources to address patient needs (e.g., transportation). Staff buy-in emerged as an implementation facilitator, fostering a conducive environment for change within clinics. Conclusions Using CFIR, we identified barriers, such as the burden of technology infrastructure, and facilitators, such as staff buy-in. The results, which enhance our understanding of CRCS EBI implementation in FQHCs, provide insights into designing nuanced, practical implementation strategies to improve cancer control in a critical setting.
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- 2024
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122. PDX1+ cell budding morphogenesis in a stem cell-derived islet spheroid system
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Jia Zhao, Shenghui Liang, Haoning Howard Cen, Yanjun Li, Robert K. Baker, Balwinder Ruprai, Guang Gao, Chloe Zhang, Huixia Ren, Chao Tang, Liangyi Chen, Yanmei Liu, Francis C. Lynn, James D. Johnson, and Timothy J. Kieffer
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Science - Abstract
Abstract Remarkable advances in protocol development have been achieved to manufacture insulin-secreting islets from human pluripotent stem cells (hPSCs). Distinct from current approaches, we devised a tunable strategy to generate islet spheroids enriched for major islet cell types by incorporating PDX1+ cell budding morphogenesis into staged differentiation. In this process that appears to mimic normal islet morphogenesis, the differentiating islet spheroids organize with endocrine cells that are intermingled or arranged in a core-mantle architecture, accompanied with functional heterogeneity. Through in vitro modelling of human pancreas development, we illustrate the importance of PDX1 and the requirement for EphB3/4 signaling in eliciting cell budding morphogenesis. Using this new approach, we model Mitchell-Riley syndrome with RFX6 knockout hPSCs illustrating unexpected morphogenesis defects in the differentiation towards islet cells. The tunable differentiation system and stem cell-derived islet models described in this work may facilitate addressing fundamental questions in islet biology and probing human pancreas diseases.
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- 2024
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123. Flow augmentation therapies preserve brain network integrity and hemodynamics in a canine permanent occlusion model
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Chisondi S. Warioba, Timothy J. Carroll, and Gregory Christoforidis
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Medicine ,Science - Abstract
Abstract The acute phase of ischemic stroke presents a critical window for therapeutic intervention, where novel approaches such as hyper-acute cerebral flow augmentation offer promising avenues for neuroprotection. In this study, we investigated the effects of two such therapies, NEH (a combination of norepinephrine and hydralazine) and Sanguinate (pegylated bovine carboxyhemoglobin), on resting-state functional connectivity, global mean signal (GMS), and blood oxygen level-dependent (BOLD) time lag in a pre-clinical canine model of stroke via permanent occlusion of the middle cerebral artery (total of n = 40 IACUC-approved mongrel canines randomly split into control/natural history and two treatment groups). Utilizing group independent component analysis (ICA), we identified and examined the integrity of sensorimotor and visual networks both pre- and post-occlusion, across treatment and control groups. Our results demonstrated that while the control group exhibited significant disruptions in these networks following stroke, the treatment groups showed remarkable preservation of network integrity. Voxel-wise functional connectivity analysis revealed less pronounced alterations in the treatment groups, suggesting maintained neural connections. Notably, the treatments stabilized GMS, with only minimal reductions observed post-occlusion compared to significant decreases in the control group. Furthermore, BOLD time-lag unity plots indicated that NEH and Sanguinate maintained consistent hemodynamic response timing, as evidenced by tighter clustering around the line of unity, suggesting a potential neuroprotective effect. These findings were underscored by robust statistical analyses, including paired T-tests and Mann–Whitney U tests, which confirmed the significance of the connectivity changes observed. The correlation of BOLD time-lag variations with neuroimaging functional biomarkers highlighted the impact of stroke and the efficacy of early therapeutic interventions. Our study supports the further study of flow augmentation therapies such as NEH and Sanguinate in stroke treatment protocols and suggests flow augmentation therapies should be further explored in an effort to improve patient outcomes.
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- 2024
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124. Protocol for a feasibility registry-based randomised controlled trial investigating a tailored follow-up service for stroke (A-LISTS)
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Dominique A. Cadilhac, Andrew G. Ross, Kathleen L. Bagot, Jannette M. Blennerhassett, Monique F. Kilkenny, Joosup Kim, Tara Purvis, Karen M. Barclay, Fiona Ellery, Julie Morrison, Jennifer Cranefield, Timothy J. Kleinig, Rohan Grimley, Katherine Jaques, Dana Wong, Lisa Murphy, Grant Russell, Mark R. Nelson, Vincent Thijs, Colin Scott, Sandy Middleton, and the A-LISTS investigator group
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Stroke ,Clinical trial protocol ,Follow-up service ,Clinical Quality Registry ,Medicine (General) ,R5-920 - Abstract
Abstract Background Stroke affects long-term physical and cognitive function; many survivors report unmet health needs, such as pain or depression. A hospital-led follow-up service designed to address ongoing health problems may avoid unplanned readmissions and improve quality of life. Methods This paper outlines the protocol for a registry-based, randomised controlled trial with allocation concealment of participants and outcome assessors. Based on an intention-to-treat analysis, we will evaluate the feasibility, acceptability, potential effectiveness and cost implications of a new tailored, codesigned, hospital-led follow-up service for people within 6–12 months of stroke. Participants (n = 100) from the Australian Stroke Clinical Registry who report extreme health problems on the EuroQol EQ-5D-3L survey between 90 and 180 days after stroke will be randomly assigned (1:1) to intervention (follow-up service) or control (usual care) groups. All participants will be independently assessed at baseline and 12–14-week post-randomisation. Primary outcomes for feasibility are the proportion of participants completing the trial and for intervention participants the proportion that received follow-up services. Acceptability is satisfaction of clinicians and participants involved in the intervention. Secondary outcomes include effectiveness: change in extreme health problems (EQ-5D-3L), unmet needs (Longer-term Unmet Needs questionnaire), unplanned presentations and hospital readmission, functional independence (modified Rankin Scale) and cost implications estimated from self-reported health service utilisation and productivity (e.g. workforce participation). To inform future research or implementation, the design contains a process evaluation including clinical protocol fidelity and an economic evaluation. Discussion The results of this study will provide improved knowledge of service design and implementation barriers and facilitators and associated costs and resource implications to inform a future fully powered effectiveness trial of the intervention. Trial registration ACTRN12622001015730pr. Trial sponsor Florey Institute of Neuroscience and Mental Health, 245 Burgundy Street, Heidelberg, VIC, 3084, PH: +61 3 9035 7032
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- 2024
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125. Structure of the MlaC-MlaD complex reveals molecular basis of periplasmic phospholipid transport
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Peter Wotherspoon, Hannah Johnston, David J. Hardy, Rachel Holyfield, Soi Bui, Giedrė Ratkevičiūtė, Pooja Sridhar, Jonathan Colburn, Charlotte B. Wilson, Adam Colyer, Benjamin F. Cooper, Jack A. Bryant, Gareth W. Hughes, Phillip J. Stansfeld, Julien R. C. Bergeron, and Timothy J. Knowles
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Science - Abstract
Abstract The Maintenance of Lipid Asymmetry (Mla) pathway is a multicomponent system found in all gram-negative bacteria that contributes to virulence, vesicle blebbing and preservation of the outer membrane barrier function. It acts by removing ectopic lipids from the outer leaflet of the outer membrane and returning them to the inner membrane through three proteinaceous assemblies: the MlaA-OmpC complex, situated within the outer membrane; the periplasmic phospholipid shuttle protein, MlaC; and the inner membrane ABC transporter complex, MlaFEDB, proposed to be the founding member of a structurally distinct ABC superfamily. While the function of each component is well established, how phospholipids are exchanged between components remains unknown. This stands as a major roadblock in our understanding of the function of the pathway, and in particular, the role of ATPase activity of MlaFEDB is not clear. Here, we report the structure of E. coli MlaC in complex with the MlaD hexamer in two distinct stoichiometries. Utilising in vivo complementation assays, an in vitro fluorescence-based transport assay, and molecular dynamics simulations, we confirm key residues, identifying the MlaD β6-β7 loop as essential for MlaCD function. We also provide evidence that phospholipids pass between the C-terminal helices of the MlaD hexamer to reach the central pore, providing insight into the trajectory of GPL transfer between MlaC and MlaD.
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- 2024
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126. Cannabinoid Awareness, Reporting Use to Health Care Providers, and Perceptions Regarding Safety – Pennsylvania, March 2023–April 2023
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Paul T. Kocis, Daniel J. Mallinson, and Timothy J. Servinsky Jr.
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cannabinoids ,cannabis ,cannabidiol ,survey ,pennsylvania ,tetrahydrocannabinol ,Medicine - Abstract
Introduction: With the continued societal and policy interest in cannabinoids, the Penn State Harrisburg Center for Survey Research (CSR) conducted a web survey (Cannabinoid Lion Poll) for adult-aged Pennsylvanians between March 6 and April 2, 2023. Methods: The Lion Poll omnibus survey asked questions of adult-aged Pennsylvanians to assess awareness of cannabidiol (CBD) and products containing tetrahydrocannabinol (THC), including marijuana, the likelihood of reporting cannabinoid use to health care providers (HCPs), and perceptions regarding safety. Results: Of these 1,045 respondents, 51.2% were female; 83.0% were white, non-Hispanic; and 48.6% and 27.5% were within the 35–64-year and 18–34-year age ranges, respectively. Of the respondents, 52.1% and 53.9% told their HCPs they took CBD or products containing THC, respectively. Alcohol was perceived by the large proportion of respondents as unsafe (47.3%), followed by products containing THC (25.2%), anxiety/depression medications (21.7%), CBD (16.1%), and over-the-counter (OTC) pain medications (8.1%). Most combinations were perceived to be unsafe when asked to consider the safety of taking them with other prescription medications. Again, alcohol was perceived to be unsafe by the largest proportion (77.4%), followed by anxiety/depression medications (43.2%), products containing THC (42.6%), CBD (33.4%), and then OTC pain medications (24.8%). Conclusions: Adult-aged Pennsylvanians perceive CBD and THC containing products as safer than alcohol. There is considerable underreporting of cannabinoid use to HCPs, and therefore significant implications for patient safety. It remains vital that HCPs have open communications with their patients about cannabinoid use.
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- 2024
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127. Comparative CNS Pharmacology of the Bruton’s Tyrosine Kinase (BTK) Inhibitor Tolebrutinib Versus Other BTK Inhibitor Candidates for Treating Multiple Sclerosis
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Timothy J. Turner, Pricilla Brun, Ross C. Gruber, and Dimitry Ofengeim
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Therapeutics. Pharmacology ,RM1-950 - Abstract
Abstract Background and objectives Tolebrutinib is a covalent BTK inhibitor designed and selected for potency and CNS exposure to optimize impact on BTK-dependent signaling in CNS-resident cells. We applied a translational approach to evaluate three BTK inhibitors in Phase 3 clinical development in MS with respect to their relative potency to block BTK-dependent signaling and exposure in the CNS Methods We used in vitro kinase and cellular activation assays, alongside pharmacokinetic sampling of cerebrospinal fluid (CSF) in the non-human primate cynomolgus to estimate the ability of these candidates (evobrutinib, fenebrutinib, and tolebrutinib) to block BTK-dependent signaling inside the CNS. Results In vitro kinase assays demonstrated that tolebrutinib reacted with BTK 65-times faster than evobrutinib, while fenebrutinib, a classical reversible antagonist with a K i value of 4.7 nM and slow off-rate (1.54 x 10-5 s-1), also had an association rate 1760-fold slower (0.00245 μM-1 * s-1). Estimates of cellular potency were largely consistent with the in vitro kinase assays, with an estimated IC50 of 0.7 nM for tolebrutinib against 33.5 nM for evobrutinib and 2.9 nM for fenebrutinib. We then observed that evobrutinib, fenebrutinib, and tolebrutinib achieved similar levels of exposure in non-human primate CSF after oral doses of 10 mg/kg. However, tolebrutinib CSF exposure (4.8 ng/mL) (k p,uu CSF=0.40) exceeded the IC90 (the estimated concentration inhibiting 90% of kinase activity) value, while evobrutinib (3.2 ng/mL) (k p,uu CSF=0.13) and fenebrutinib (12.9 ng/mL) (kp,uu CSF=0.15) failed to reach the estimated IC90 values. Conclusions Tolebrutinib was the only candidate of the three that attained relevant CSF exposure in non-human primates. Graphical Abstract
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- 2024
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128. Circulating free insulin-like growth factor-I and prostate cancer: a case-control study nested in the European prospective investigation into cancer and nutrition
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Tuck Seng Cheng, Urwah Noor, Eleanor Watts, Michael Pollak, Ye Wang, James McKay, Joshua Atkins, Giovanna Masala, Maria-Jose Sánchez, Antonio Agudo, Jesús Castilla, Dagfinn Aune, Sandra M. Colorado-Yohar, Luca Manfredi, Marc J. Gunter, Valeria Pala, Andreas Josefsson, Timothy J. Key, Karl Smith-Byrne, and Ruth C. Travis
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Free IGF-1 ,Prostate cancer ,Histological grade ,Tumor stage ,Aggressiveness ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Abstract Background Circulating total insulin-like growth factor-I (IGF-I) is an established risk factor for prostate cancer. However, only a small proportion of circulating IGF-I is free or readily dissociable from IGF-binding proteins (its bioavailable form), and few studies have investigated the association of circulating free IGF-I with prostate cancer risk. Methods We analyzed data from 767 prostate cancer cases and 767 matched controls nested within the European Prospective Investigation into Cancer and Nutrition cohort, with an average of 14-years (interquartile range = 2.9) follow-up. Matching variables were study center, length of follow-up, age, and time of day and fasting duration at blood collection. Circulating free IGF-I concentration was measured in serum samples collected at recruitment visit (mean age 55 years old; standard deviation = 7.1) using an enzyme-linked immunosorbent assay (ELISA). Conditional logistic regressions were performed to examine the associations of free IGF-I with risk of prostate cancer overall and subdivided by time to diagnosis (≤ 14 and > 14 years), and tumor characteristics. Results Circulating free IGF-I concentrations (in fourths and as a continuous variable) were not associated with prostate cancer risk overall (odds ratio [OR] = 1.00 per 0.1 nmol/L increment, 95% CI: 0.99, 1.02) or by time to diagnosis, or with prostate cancer subtypes, including tumor stage and histological grade. Conclusions Estimated circulating free IGF-I was not associated with prostate cancer risk. Further research may consider other assay methods that estimate bioavailable IGF-I to provide more insight into the well-substantiated association between circulating total IGF-I and subsequent prostate cancer risk.
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- 2024
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129. Comparison of Bayesian approaches for developing prediction models in rare disease: application to the identification of patients with Maturity-Onset Diabetes of the Young
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Pedro Cardoso, Timothy J. McDonald, Kashyap A. Patel, Ewan R. Pearson, Andrew T. Hattersley, Beverley M. Shields, and Trevelyan J. McKinley
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MODY ,Bayesian modelling ,Rare diseases ,Prior elicitation ,Recalibration ,Medicine (General) ,R5-920 - Abstract
Abstract Background Clinical prediction models can help identify high-risk patients and facilitate timely interventions. However, developing such models for rare diseases presents challenges due to the scarcity of affected patients for developing and calibrating models. Methods that pool information from multiple sources can help with these challenges. Methods We compared three approaches for developing clinical prediction models for population screening based on an example of discriminating a rare form of diabetes (Maturity-Onset Diabetes of the Young - MODY) in insulin-treated patients from the more common Type 1 diabetes (T1D). Two datasets were used: a case-control dataset (278 T1D, 177 MODY) and a population-representative dataset (1418 patients, 96 MODY tested with biomarker testing, 7 MODY positive). To build a population-level prediction model, we compared three methods for recalibrating models developed in case-control data. These were prevalence adjustment (“offset”), shrinkage recalibration in the population-level dataset (“recalibration”), and a refitting of the model to the population-level dataset (“re-estimation”). We then developed a Bayesian hierarchical mixture model combining shrinkage recalibration with additional informative biomarker information only available in the population-representative dataset. We developed a method for dealing with missing biomarker and outcome information using prior information from the literature and other data sources to ensure the clinical validity of predictions for certain biomarker combinations. Results The offset, re-estimation, and recalibration methods showed good calibration in the population-representative dataset. The offset and recalibration methods displayed the lowest predictive uncertainty due to borrowing information from the fitted case-control model. We demonstrate the potential of a mixture model for incorporating informative biomarkers, which significantly enhanced the model’s predictive accuracy, reduced uncertainty, and showed higher stability in all ranges of predictive outcome probabilities. Conclusion We have compared several approaches that could be used to develop prediction models for rare diseases. Our findings highlight the recalibration mixture model as the optimal strategy if a population-level dataset is available. This approach offers the flexibility to incorporate additional predictors and informed prior probabilities, contributing to enhanced prediction accuracy for rare diseases. It also allows predictions without these additional tests, providing additional information on whether a patient should undergo further biomarker testing before genetic testing.
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- 2024
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130. GBD2021: headache disorders and global lost health – a focus on children, and a view forward
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Timothy J Steiner, Andreas Husøy, and Lars Jacob Stovner
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Global Burden of Disease study ,Headache disorders ,Migraine ,Tension-type headache ,Children ,Epidemiology ,Medicine - Published
- 2024
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131. 24-Month Outcomes of Indirect Decompression Using a Minimally Invasive Interspinous Fixation Device versus Standard Open Direct Decompression for Lumbar Spinal Stenosis: A Prospective Comparison
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Baranidharan G, Bretherton B, Feltbower RG, Timothy J, Khan AL, Subramanian A, Ahmed M, Crowther TA, Radford H, Gupta H, Chandramohan M, Beall DP, Deer TR, and Hedman T
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lumbar spinal stenosis ,surgical decompression ,posterior lateral arthrodesis ,patient reported outcomes ,minimally invasive spine ,interspinous fixation device ,Medicine (General) ,R5-920 - Abstract
Ganesan Baranidharan,1,2 Beatrice Bretherton,1,3 Richard G Feltbower,4 Jake Timothy,5 Almas Latif Khan,6,7 Ashok Subramanian,8 Mushtaq Ahmed,9 Tracey A Crowther,1,10 Helen Radford,10,11 Harun Gupta,12 Muthusamy Chandramohan,13 Douglas P Beall,14 Timothy R Deer,15 Thomas Hedman16 1Pain Management Department, Leeds Teaching Hospitals NHS Trust, Leeds, UK; 2School of Medicine, University of Leeds, Leeds, UK; 3School of Biomedical Sciences, Faculty of Biological Sciences, University of Leeds, Leeds, UK; 4Leeds Institute for Data Analytics, School of Medicine, University of Leeds, Leeds, UK; 5Department of Neuroscience, Leeds Teaching Hospitals NHS Trust, Leeds, UK; 6Department of Spine Surgery, Leeds Teaching Hospitals NHS Trust, Leeds, UK; 7Institute of Medical and Biological Engineering, University of Leeds, Leeds, UK; 8Somerset Spinal Surgery Service, Musgrove Park Hospital, Taunton, UK; 9Department of Trauma and Orthopaedic Surgery, Dudley Group NHS Foundation Trust, Dudley, UK; 10Research & Innovation, Leeds Teaching Hospitals NHS Trust, Leeds, UK; 11Leeds Institute of Clinical Trials Research, University of Leeds, Leeds, UK; 12Department of Radiology, Leeds Teaching Hospitals NHS Trust, Leeds, UK; 13Radiology Department, Bradford Teaching Hospitals NHS Foundation Trust, Bradford, UK; 14Comprehensive Specialty Care, Edmond, OK, USA; 15The Spine and Nerve Center of the Virginias, Charleston, WV, USA; 16Department of Biomedical Engineering, University of Kentucky, Lexington, KY, USACorrespondence: Ganesan Baranidharan, Pain Management Department, Leeds Teaching Hospitals NHS Trust, Leeds, UK, Email g.baranidharan@nhs.netPurpose: An early-stage, multi-centre, prospective, randomised control trial with five-year follow-up was approved by Health Research Authority to compare the efficacy of a minimally invasive, laterally implanted interspinous fixation device (IFD) to open direct surgical decompression in treating lumbar spinal stenosis (LSS). Two-year results are presented.Patients and Methods: Forty-eight participants were randomly assigned to IFD or decompression. Primary study endpoints included changes from baseline at 8-weeks, 6, 12 and 24-months follow-ups for leg pain (visual analogue scale, VAS), back pain (VAS), disability (Oswestry Disability Index, ODI), LSS physical function (Zurich Claudication Questionnaire), distance walked in five minutes and number of repetitions of sitting-to-standing in one minute. Secondary study endpoints included patient and clinician global impression of change, adverse events, reoperations, operating parameters, and fusion rate.Results: Both treatment groups demonstrated statistically significant improvements in mean leg pain, back pain, ODI disability, LSS physical function, walking distance and sitting-to-standing repetitions compared to baseline over 24 months. Mean reduction of ODI from baseline levels was between 35% and 56% for IFD (p< 0.002), and 49% to 55% for decompression (p< 0.001) for all follow-up time points. Mean reduction of IFD group leg pain was between 57% and 78% for all time points (p< 0.001), with 72% to 94% of participants having at least 30% reduction of leg pain from 8-weeks through 24-months. Walking distance for the IFD group increased from 66% to 94% and sitting-to-standing repetitions increased from 44% to 64% for all follow-up time points. Blood loss was 88% less in the IFD group (p=0.024) and operating time parameters strongly favoured IFD compared to decompression (p< 0.001). An 89% fusion rate was assessed in a subset of IFD participants. There were no intraoperative device issues or re-operations in the IFD group, and only one healed and non-symptomatic spinous process fracture observed within 24 months.Conclusion: Despite a low number of participants in the IFD group, the study demonstrated successful two-year safety and clinical outcomes for the IFD with significant operation-related advantages compared to surgical decompression.Keywords: lumbar spinal stenosis, surgical decompression, posterior lateral arthrodesis, patient reported outcomes, minimally invasive spine, interspinous fixation device
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- 2024
132. Exploring the Impact of 3D Fast Spin Echo and Inversion Recovery Gradient Echo Sequences Magnetic Resonance Imaging Acquisition on Automated Brain Tumor Segmentation
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Mana Moassefi, MD, Shahriar Faghani, MD, Sara Khanipour Roshan, MD, Gian Marco Conte, MD, PhD, Seyed Moein Rassoulinejad Mousavi, MD, Timothy J. Kaufmann, MD, and Bradley J. Erickson, MD, PhD
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Computer applications to medicine. Medical informatics ,R858-859.7 - Abstract
Objective: To conduct a study comparing the performance of automated segmentation techniques using 2 different contrast-enhanced T1-weighted (CET1) magnetic resonance imaging (MRI) acquisition protocol. Patients and Methods: We collected 100 preoperative glioblastoma (GBM) MRIs consisting of 50 IR-GRE and 50 3-dimensional fast spin echo (3D-FSE) image sets. Their gold-standard tumor segmentation mask was created based on the expert opinion of a neuroradiologist. Cases were randomly divided into training and test sets. We used the no new UNet (nnUNet) architecture pretrained on the 501-image public data set containing IR-GRE sequence image sets, followed by 2 training rounds with the IR-GRE and 3D-FSE images, respectively. For each patient, in the IR-GRE and 3D-FSE test sets, we had 2 prediction masks, one from the model fine-tuned with the IR-GRE training set and one with 3D-FSE. The dice similarity coefficients (DSCs) of the 2 sets of results for each case in the test sets were compared using the Wilcoxon tests. Results: Models trained on 3D-FSE images outperformed IR-GRE models in lesion segmentation, with mean DSC differences of 0.057 and 0.022 in the respective test sets. For the 3D-FSE and IR-GRE test sets, the calculated P values comparing DSCs from 2 models were .02 and .61, respectively. Conclusion: Including 3D-FSE MRI in the training data set improves segmentation performance when segmenting 3D-FSE images.
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- 2024
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133. Functional group tolerant hydrogen borrowing C-alkylation
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Elliot P. Bailey, Timothy J. Donohoe, and Martin D. Smith
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Science - Abstract
Abstract Hydrogen borrowing is an attractive and sustainable strategy for carbon–carbon bond formation that enables alcohols to be used as alkylating reagents in place of alkyl halides. However, despite intensive efforts, limited functional group tolerance is observed in this methodology, which we hypothesize is due to the high temperatures and harsh basic conditions often employed. Here we demonstrate that room temperature and functional group tolerant hydrogen borrowing can be achieved with a simple iridium catalyst in the presence of substoichiometric base without an excess of reagents. Achieving high yields necessitates the application of anaerobic conditions to counteract the oxygen sensitivity of the catalytic iridium hydride intermediate, which otherwise leads to catalyst degradation. Substrates containing heteroatoms capable of complexing the catalyst exhibit limited room temperature reactivity, but the application of moderately higher temperatures enables extension to a broad range of medicinally relevant nitrogen rich heterocycles. These newly developed conditions allow alcohols possessing functional groups that were previously incompatible with hydrogen borrowing reactions to be employed.
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- 2024
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134. Effects of COVID-19 pandemic on low birth weight in a nationwide study in India
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Santosh Kumar, Clare Hill, and Timothy J. Halliday
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Medicine - Abstract
Abstract Background Among newborns, those born in India have the highest prevalence of low birth weight (LBW). The COVID-19 pandemic exacerbated the risk factors for LBW. This study examined whether birth outcomes deteriorated during the pandemic period compared to those during the pre-pandemic period. Methods This cross-sectional study included nationally representative data on 198,203 infants. Multivariate ordinary least square and logistic regression models with district fixed effects were fitted to compare the birth outcomes in the pandemic period (April 2020-April 2021) and the pre-pandemic period (July 2014-December 2019). Regression models were adjusted for covariates—gender and birth order of the child, mother’s age and education, rural residence, religion, caste, and household wealth. Results The pandemic cohort includes 11,851 infants (5.8%), while the pre-pandemic cohort includes 192,764 infants (94.2%). The LBW prevalence rate is 20% in the pandemic cohort and 17% in the pre-pandemic cohort. The covariate-adjusted model shows significant differences in birth weight (11 grams) and LBW (aOR: 1.08; 95% CI: 1.03-1.14) between the pandemic and pre-pandemic cohorts. Conclusions Our findings show that babies born during the COVID-19 pandemic are more likely to be LBW. The subgroup analyses indicate significant differences by religion but not by maternal education, caste, and wealth group.
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- 2024
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135. A Comprehensive Review of Dynamic Speed Feedback Signs in Reducing Speed at Different Critical Locations
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Shakir MAHMUD, Dario BABIĆ, and Timothy J. GATES
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dynamic speed feedback sign ,driving speed ,driver behaviour ,road safety ,review ,Transportation engineering ,TA1001-1280 - Abstract
Excessive speed is one of the main causes of fatal crashes worldwide. One speed reduction measure is dynamic speed feedback signs (DSFS), whose main purpose is to make drivers aware of their excessive speed and thus influence their behaviour in a way that they reduce their driving speed. The objective of this review is to discuss the benefits of implementing DSFS in different settings, identify the most effective placement and messaging strategies, analyse the public perception and temporal effect of DSFS, and identify potential locations where this device can be further deployed. The study includes 44 studies, of which 35 are journal publications, three are conference proceedings and six are technical reports. The identified studies are divided into six categories based on their topic: (1) operational benefits of DSFS; (2) safety benefits of DSFS; (3) public perception of DSFS; (4) position of DSFS installation, message type and triggering; (5) temporal effect of DSFS; and 6) effect of vehicle type. The results of this study provide information on the use of DSFS and as such are valuable to road authorities and researchers.
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- 2024
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136. Spatially distributed atmospheric boundary layer properties in Houston – A value-added observational dataset
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Katia Lamer, Zackary Mages, Bernat Puigdomènech Treserras, Paul Walter, Zeen Zhu, Anita D. Rapp, Christopher J. Nowotarski, Sarah D. Brooks, James Flynn, Milind Sharma, Petra Klein, Michelle Spencer, Elizabeth Smith, Joshua Gebauer, Tyler Bell, Lydia Bunting, Travis Griggs, Timothy J. Wagner, and Katherine McKeown
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Science - Abstract
Abstract In 2022, Houston, TX became a nexus for field campaigns aiming to further our understanding of the feedbacks between convective clouds, aerosols and atmospheric boundary layer (ABL) properties. Houston’s proximity to the Gulf of Mexico and Galveston Bay motivated the collection of spatially distributed observations to disentangle coastal and urban processes. This paper presents a value-added ABL dataset derived from observations collected by eight research teams over 46 days between 2 June - 18 September 2022. The dataset spans 14 sites distributed within a ~80-km radius around Houston. Measurements from three types of instruments are analyzed to objectively provide estimates of nine ABL parameters, both thermodynamic (potential temperature, and relative humidity profiles and thermodynamic ABL depth) and dynamic (horizontal wind speed and direction, mean vertical velocity, updraft and downdraft speed profiles, and dynamical ABL depth). Contextual information about cloud occurrence is also provided. The dataset is prepared on a uniform time-height grid of 1 h and 30 m resolution to facilitate its use as a benchmark for forthcoming numerical simulations and the fundamental study of atmospheric processes.
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- 2024
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137. Epistasis mediates the evolution of the receptor binding mode in recent human H3N2 hemagglutinin
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Ruipeng Lei, Weiwen Liang, Wenhao O. Ouyang, Andrea Hernandez Garcia, Chika Kikuchi, Shengyang Wang, Ryan McBride, Timothy J. C. Tan, Yuanxin Sun, Chunke Chen, Claire S. Graham, Lucia A. Rodriguez, Ivana R. Shen, Danbi Choi, Roberto Bruzzone, James C. Paulson, Satish K. Nair, Chris K. P. Mok, and Nicholas C. Wu
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Science - Abstract
Abstract The receptor-binding site of influenza A virus hemagglutinin partially overlaps with major antigenic sites and constantly evolves. In this study, we observe that mutations G186D and D190N in the hemagglutinin receptor-binding site have coevolved in two recent human H3N2 clades. X-ray crystallography results show that these mutations coordinately drive the evolution of the hemagglutinin receptor binding mode. Epistasis between G186D and D190N is further demonstrated by glycan binding and thermostability analyses. Immunization and neutralization experiments using mouse and human samples indicate that the evolution of receptor binding mode is accompanied by a change in antigenicity. Besides, combinatorial mutagenesis reveals that G186D and D190N, along with other natural mutations in recent H3N2 strains, alter the compatibility with a common egg-adaptive mutation in seasonal influenza vaccines. Overall, our findings elucidate the role of epistasis in shaping the recent evolution of human H3N2 hemagglutinin and substantiate the high evolvability of its receptor-binding mode.
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- 2024
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138. Genetic influences on brain and cognitive health and their interactions with cardiovascular conditions and depression
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Peter Zhukovsky, Earvin S. Tio, Gillian Coughlan, David A. Bennett, Yanling Wang, Timothy J. Hohman, Diego A. Pizzagalli, Benoit H. Mulsant, Aristotle N. Voineskos, and Daniel Felsky
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Science - Abstract
Abstract Approximately 40% of dementia cases could be prevented or delayed by modifiable risk factors related to lifestyle and environment. These risk factors, such as depression and vascular disease, do not affect all individuals in the same way, likely due to inter-individual differences in genetics. However, the precise nature of how genetic risk profiles interact with modifiable risk factors to affect brain health is poorly understood. Here we combine multiple data resources, including genotyping and postmortem gene expression, to map the genetic landscape of brain structure and identify 367 loci associated with cortical thickness and 13 loci associated with white matter hyperintensities (P
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- 2024
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139. Clinical, pathological, and adjuvant chemotherapy use differences among microsatellite unstable and microsatellite stable colon cancers
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Baqir Hasan Jafry, Munir Hassan Buhaya, Allante Milsap, Amy Little Jones, Suleyman Yasin Goksu, Nilesh Verma, Timothy J. Brown, Amy Hughes, Rasmi Nair, Nina Sanford, Joseph Su, Emina Huang, and Syed Mohammad Ali Kazmi
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Adjuvant chemotherapy ,MSI-H ,MSS ,NCDB ,Overall survival ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Background: Colon cancers are categorized into mismatch repair deficient/microsatellite unstable (MSI-H) and mismatch repair proficient/microsatellite stable (MSS) cancers. This study aims to compare the disease characteristics and trends in the utilization of cancer therapies across different age groups and stages in these two groups. Methods: MSI-H and MSS colon adenocarcinomas from 2010 to 2016 were identified using the National Cancer Database. We compared patient and disease characteristics between the two groups and evaluated the use of adjuvant chemotherapy across age groups and cancer stages. Within MSI-H and MSS groups, we conducted a landmark analysis after propensity score matching for adjuvant chemotherapy versus no chemotherapy to determine its effect on survival. Results: Of the 542,368 patients that met inclusion criteria, 120,751 (22%) had mismatch repair results available—out of these 96,928 (80%) had MSS colon cancers while 23,823 (19.7%) had MSI-H cancers. MSI-H disease had a bimodal age distribution (
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- 2024
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140. Phage predation accelerates the spread of plasmid-encoded antibiotic resistance
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Chujin Ruan, Josep Ramoneda, Anton Kan, Timothy J. Rudge, Gang Wang, and David R. Johnson
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Science - Abstract
Abstract Phage predation is generally assumed to reduce microbial proliferation while not contributing to the spread of antibiotic resistance. However, this assumption does not consider the effect of phage predation on the spatial organization of different microbial populations. Here, we show that phage predation can increase the spread of plasmid-encoded antibiotic resistance during surface-associated microbial growth by reshaping spatial organization. Using two strains of the bacterium Escherichia coli, we demonstrate that phage predation slows the spatial segregation of the strains during growth. This increases the number of cell-cell contacts and the extent of conjugation-mediated plasmid transfer between them. The underlying mechanism is that phage predation shifts the location of fastest growth from the biomass periphery to the interior where cells are densely packed and aligned closer to parallel with each other. This creates straighter interfaces between the strains that are less likely to merge together during growth, consequently slowing the spatial segregation of the strains and enhancing plasmid transfer between them. Our results have implications for the design and application of phage therapy and reveal a mechanism for how microbial functions that are deleterious to human and environmental health can proliferate in the absence of positive selection.
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- 2024
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141. The burden of headache and a health-care needs assessment in the adult population of Mali: a cross-sectional population-based study
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Youssoufa Maiga, Seybou H. Diallo, Oumar Sangho, Leon Samuel Moskatel, Fatoumata Konipo, Abdoulaye Bocoum, Salimata Diallo, Awa Coulibaly, Mariam Daou, Housseini Dolo, Modibo Sangaré, Mohamed Albakaye, Zoumana Traoré, Thomas Coulibaly, Adama Sissoko, Guida Landouré, Boubacar Guindo, Mahamoudou Ahamadou, Mahamane Drahamane Toure, Abibatou Dembele, Habib Sacko, Cheick Abdoul Kadri Sao, Diakalia Coulibaly, Salimata Dembele, Cheick Oumar Coulibaly, Mohamadou Sanogo, Sekou Boiguilé, Julien Nizard, Robert Cowan, Timothy J. Steiner, and and Andreas Husøy
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Headache ,Medication-overuse headache ,Epidemiology ,Burden of disease ,Health policy ,Mali ,Medicine - Abstract
Abstract Background Our recent studies have shown headache disorders to be very common in the central and western sub-Saharan countries of Benin and Cameroon. Here we report headache in nearby Mali, a strife-torn country that differs topographically, culturally, politically and economically. The purposes were to estimate headache-attributed burden and need for headache care. Methods We used cluster-random sampling in seven of Mali’s eleven regions to obtain a nationally representative sample. During unannounced household visits by trained interviewers, one randomly selected adult member (18–65 years) from each household was interviewed using the structured HARDSHIP questionnaire, with enquiries into headache in the last year and, additionally, headache yesterday (HY). Headache on ≥ 15 days/month (H15+) was diagnosed as probable medication-overuse headache (pMOH) when associated with acute medication use on ≥ 15 days/month, and as “other H15+” when not. Episodic headache (on
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- 2024
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142. Headache prevalence and demographic associations in the Delhi and National Capital Region of India: estimates from a cross-sectional nationwide population-based study
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Debashish Chowdhury, Anand Krishnan, Ashish Duggal, Ritvik Amarchand, Andreas Husøy, and Timothy J. Steiner
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Epidemiology ,Prevalence ,Population-based study ,Headache ,Migraine ,Tension-type headache ,Medicine - Abstract
Abstract Background India is a large and populous country where reliable data on headache disorders are relatively scarce. This study in northern India (Delhi and National Capital Territory Region [NCR], including surrounding districts in the States of Haryana, Uttar Pradesh and Rajasthan) continues the series of population-based studies within the Global Campaign against Headache and follows an earlier study, using the same protocol and questionnaire, in the southern State of Karnataka. Methods This cross-sectional study used the Global Campaign’s established methodology. Biologically unrelated Indian nationals aged 18–65 years were included through multistage random sampling in both urban and rural areas of NCR. Interviews at unannounced household visits followed the structured Headache-Attributed Restriction, Disability, Social Handicap and Impaired Participation (HARDSHIP) questionnaire in its original English version or in the validated Hindi version. Demographic enquiry was followed by a neutral headache screening question and diagnostic questions based on the International Classification of Headache Disorders edition 3 (ICHD-3), which focused on each respondent’s most bothersome headache. Questions about headache yesterday (HY) enabled estimation of 1-day prevalence. A diagnostic algorithm first identified participants reporting headache on ≥ 15 days/month (H15+), diagnosing probable medication-overuse headache (pMOH) in those also reporting acute medication use on ≥ 15 days/month, and “other H15+” in those not. To all others, the algorithm applied ICHD-3 criteria in the order definite migraine, definite tension-type headache (TTH), probable migraine, probable TTH. Definite and probable diagnoses were combined. Results Adjusted for age, gender and habitation, 1-year prevalences were 26.3% for migraine, 34.1% for TTH, 3.0% for pMOH and 4.5% for other H15+. Female preponderance was seen in all headache types except TTH: migraine 35.7% vs. 15.1% (aOR = 3.3; p
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- 2024
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143. Rare variant analyses validate known ALS genes in a multi-ethnic population and identifies ANTXR2 as a candidate in PLS
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Tess D. Pottinger, Joshua E. Motelow, Gundula Povysil, Cristiane A. Martins Moreno, Zhong Ren, Hemali Phatnani, The New York Genome Center ALS Sequencing Consortium, Timothy J. Aitman, Javier Santoyo-Lopez, Scottish Genomes Partnership, Hiroshi Mitsumoto, ALS COSMOS Study Group, PLS COSMOS Study Group, GTAC Investigators, David B. Goldstein, and Matthew B. Harms
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Amyotrophic lateral sclerosis ,ALS ,Peripheral lateral sclerosis ,PLS ,Burden testing ,Rare-variant analyses ,Biotechnology ,TP248.13-248.65 ,Genetics ,QH426-470 - Abstract
Abstract Background Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease affecting over 300,000 people worldwide. It is characterized by the progressive decline of the nervous system that leads to the weakening of muscles which impacts physical function. Approximately, 15% of individuals diagnosed with ALS have a known genetic variant that contributes to their disease. As therapies that slow or prevent symptoms continue to develop, such as antisense oligonucleotides, it is important to discover novel genes that could be targets for treatment. Additionally, as cohorts continue to grow, performing analyses in ALS subtypes, such as primary lateral sclerosis (PLS), becomes possible due to an increase in power. These analyses could highlight novel pathways in disease manifestation. Methods Building on our previous discoveries using rare variant association analyses, we conducted rare variant burden testing on a substantially larger multi-ethnic cohort of 6,970 ALS patients, 166 PLS patients, and 22,524 controls. We used intolerant domain percentiles based on sub-region Residual Variation Intolerance Score (subRVIS) that have been described previously in conjunction with gene based collapsing approaches to conduct burden testing to identify genes that associate with ALS and PLS. Results A gene based collapsing model showed significant associations with SOD1, TARDBP, and TBK1 (OR = 19.18, p = 3.67 × 10–39; OR = 4.73, p = 2 × 10–10; OR = 2.3, p = 7.49 × 10–9, respectively). These genes have been previously associated with ALS. Additionally, a significant novel control enriched gene, ALKBH3 (p = 4.88 × 10–7), was protective for ALS in this model. An intolerant domain-based collapsing model showed a significant improvement in identifying regions in TARDBP that associated with ALS (OR = 10.08, p = 3.62 × 10–16). Our PLS protein truncating variant collapsing analysis demonstrated significant case enrichment in ANTXR2 (p = 8.38 × 10–6). Conclusions In a large multi-ethnic cohort of 6,970 ALS patients, collapsing analyses validated known ALS genes and identified a novel potentially protective gene, ALKBH3. A first-ever analysis in 166 patients with PLS found a candidate association with loss-of-function mutations in ANTXR2.
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- 2024
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144. CelFiE-ISH: a probabilistic model for multi-cell type deconvolution from single-molecule DNA methylation haplotypes
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Irene Unterman, Dana Avrahami, Efrat Katsman, Timothy J. Triche, Benjamin Glaser, and Benjamin P. Berman
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Bioinformatics ,Next-generation sequencing ,DNA methylation ,Deconvolution ,WGBS ,RRBS ,Biology (General) ,QH301-705.5 ,Genetics ,QH426-470 - Abstract
Abstract Deconvolution methods infer quantitative cell type estimates from bulk measurement of mixed samples including blood and tissue. DNA methylation sequencing measures multiple CpGs per read, but few existing deconvolution methods leverage this within-read information. We develop CelFiE-ISH, which extends an existing method (CelFiE) to use within-read haplotype information. CelFiE-ISH outperforms CelFiE and other existing methods, achieving 30% better accuracy and more sensitive detection of rare cell types. We also demonstrate the importance of marker selection and of tailoring markers for haplotype-aware methods. While here we use gold-standard short-read sequencing data, haplotype-aware methods will be well-suited for long-read sequencing.
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- 2024
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145. A new Late Triassic sauropodomorph dinosaur from the Mid-Zambezi Basin, Zimbabwe
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PAUL M. BARRETT, KIMBERLEY E.J. CHAPELLE, LARA SCISCIO, TIMOTHY J. BRODERICK, MICHEL ZONDO, DARLINGTON MUNYIKWA, and JONAH N. CHOINIERE
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sauropodomorpha ,massopoda ,pebbly arkose formation ,norian ,lake kariba ,Fossil man. Human paleontology ,GN282-286.7 ,Paleontology ,QE701-760 - Abstract
An articulated partial hind limb collected from the Pebbly Arkose Formation (Norian, Upper Triassic) of the Upper Karoo Group of Zimbabwe is described as a new taxon of sauropodomorph dinosaur. Musankwa sanyatiensis gen. et sp. nov. was discovered on the shoreline of Lake Kariba, on Spurwing Island in the Mid-Zambezi Basin. The holotype consists of a right femur, tibia, and astragalus, and can be distinguished from all other Late Triassic massopodan sauropodomorphs on the basis of numerous features, which form a unique character combination. Phylogenetic analysis recovers the new taxon as the earliest-branching lineage within Massopoda. Musankwa is only the fourth dinosaur to be named from the Karoo-aged basins of Zimbabwe and further demonstrates the high potential of this region for discoveries of new early dinosaur material.
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- 2024
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146. Parallel tourism:foundation intelligence driven smart trip services
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ZHANG Tengchao, TIAN Yonglin, LIN Fei, NI Qinghua, SONG Ping, DAI Xingyuan, LI Juanjuan, WU Naiqi, Timothy J. Lee, and WANG Fei-Yue
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parallel tourism ,parallel systems ,ACP approach ,multimodal large language models ,retrieval-augmented generation ,metaverse ,Electronic computers. Computer science ,QA75.5-76.95 - Abstract
Tourism, as an activity that satisfies people's desire for diverse life experiences and knowledge, has had profound impacts on the economy, culture, and other fields. However, with the rapid development of technologies, such as the Internet of Things and multimodal large language models, traditional tourism is unable to meet the demand for intelligent and personalized travel experiences. To address this, this paper proposes an interactive personalized tourism service system based on the concept of parallel intelligence, utilizing the ACP approach and multimodal large language models. The system constructs a comprehensive tourism model and leverages retrieval-augmented generation and multi-agent collaboration systems to create a new paradigm for personalized tourism services. Additionally, this paper explores the application ecosystem of parallel tourism, expanding the tourism ecosystem from four aspects: clothing, food, accommodation and transportation. This paper analyzes the integration of other industries with personalized tourism services. Parallel tourism is poised to bring new possibilities for the development of the tourism service industry.
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- 2024
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147. Spatiotemporal variation of crop diversification across Eastern Indo Gangetic plains of South Asia
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Ravi Nandi, Arunava Ghosh, Saurya Karmacharya, and Timothy J. Krupnik
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Spatiotemporal ,Crop diversification ,Eastern Indo Gangetic plains ,South Asia ,Agriculture (General) ,S1-972 - Abstract
South Asia's Eastern Indo-Gangetic Plain (EIGP) of India, Nepal, and Bangladesh is home to approximately 450 million people and predominantly rely on agriculture for livelihood. Agriculture is highly cereal-centric in EIGP. Increasing crop diversification within the EIGP region could improve agricultural sustainability, but knowledge of the spatiotemporal patterns of crop diversification and how it varies across EIGP countries is limited. In this study, we used historical sub-national crop data from India (1966–2022), Nepal (2000–2022), and Bangladesh (1971–2022) to measure crop diversification and compare it with the existing sub-district level scale. Crop diversification was measured using the Herfindahl-Hirschman Index (HHI). We found a noticeable increase in overall crop diversification in EIGP during this period but with spatiotemporal variations between the countries and seasons. Furthermore, while comparing sub-national patterns with existing sub-district patterns, we found opposing trends. Our data suggest that sub-national diversification patterns are an aggregate measure that may obscure the diversification pattern at the district, sub-strict, and even community level diversification. Measurements of sub-national crop diversification may appear to have moderate diversification overall, but this could result from some districts having high levels of diversification while others more oriented towards monocropping and a lack of diverse crop rotations. Our findings provide a new approach and a baseline of crop diversification in the EIGP for future research and interventions agricultural policy and development planners.
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- 2025
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148. Neural activity to reward and loss predicting treatment outcomes for adults with generalized anxiety disorder: A randomized clinical trial
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Hannah Berg, Yu-Jin Eun, Xiaoqian Yu, Timothy J. McDermott, Elisabeth Akeman, Rayus Kuplicki, Hung-Wen Yeh, Wesley Thompson, Christopher R. Martell, Kate B. Wolitzky-Taylor, Michelle G. Craske, Martin P. Paulus, and Robin L. Aupperle
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Reward ,Loss ,GAD ,Psychotherapy ,FMRI ,Mental healing ,RZ400-408 ,Psychiatry ,RC435-571 - Abstract
Aberrant reward processing has been predominantly associated with depressive disorders, with evidence that pre-treatment abnormalities in striatal reward responsiveness relates to treatment outcomes. Emerging research also implicates reward processing differences in anxiety disorders, particularly generalized anxiety disorder (GAD). The current study examined whether pre-treatment reward- and loss- related neural activity predicts symptom improvement with behavioral activation (BA) and exposure therapy (EXP) for GAD. In this randomized clinical trial (ClinicalTrials.gov NCT02807480) conducted from 2016 to 2021, treatment-seeking adults with GAD completed the monetary incentive delay task during functional magnetic resonance imaging pre-treatment, then were randomized to 10-session EXP or BA. The primary outcome measure was the GAD-7. Of 101 participants consented, 69 completed treatment, the 46 completers with quality imaging data were included in analyses (22 EXP, 24 BA; mean 32.7 years, 10.9 % male). A priori region-of-interest analysis revealed that greater left caudate activity during loss receipt predicted greater symptom improvement in EXP, and did not relate to symptom change in BA (F(1, 428)= 5.24, p = 0.023), though this was not significant after correction for multiple comparisons. Whole-brain analysis further identified that greater activity during reward receipt in left frontoparietal regions and anterior insula / ventrolateral prefrontal cortex was associated with better outcomes in BA and worse outcomes in EXP. These findings highlight the role of reward and loss reactivity in GAD treatment. In particular, patients with elevated reactivity to reward salience may benefit most from BA or other reward-focused treatments. Future clinical trials are warranted to further elucidate reward-related predictors of anxiety treatment.
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- 2025
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149. Cerebral cortical functional hyperconnectivity in a mouse model of spinocerebellar ataxia type 8 (SCA8)
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Angela K. Nietz, Laurentiu S. Popa, Russell E. Carter, Morgan L. Gerhart, Keerthi Manikonda, Laura P.W. Ranum, and Timothy J. Ebner
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Wide-field ,Calcium imaging ,Spinocerebellar ataxia type 8 ,Neocortex ,Independent component analysis ,Functional connectivity ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
Spinocerebellar Ataxia Type 8 (SCA8) is an inherited neurodegenerative disease caused by a bidirectionally expressed CTG•CAG expansion mutation in the ATXN8 and ATXN8OS genes. While SCA8 patients have motor abnormalities, patients may also exhibit psychiatric symptoms and cognitive dysfunction. It is difficult to elucidate how the disease alters brain function in areas with little or no degeneration producing both motor and cognitive symptoms. Using transparent polymer skulls and CNS-wide GCaMP6f expression, we studied neocortical networks throughout SCA8 progression using wide-field Ca2+ imaging in a transgenic mouse model of SCA8. Compared to wild-type controls, neocortical networks in SCA8+ mice were hyperconnected globally, which leads to network configurations with increased global efficiency and centrality. At the regional level, significant network changes occurred in nearly all cortical regions, however mainly involved sensory and association cortices. Changes in functional connectivity in anterior motor regions worsened later in the disease. Near perfect decoding of animal genotype was obtained using a generalized linear model based on canonical correlation strengths between activity in cortical regions. The major contributors to decoding were concentrated in the somatosensory, higher visual and retrosplenial cortices and occasionally extended into the motor regions, demonstrating that the areas with the largest network changes are predictive of disease state.
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- 2025
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150. Elemental profiling and genome-wide association studies reveal genomic variants modulating ionomic composition in Populus trichocarpa leaves
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Raphael Ployet, Kai Feng, Jin Zhang, Ivan Baxter, David C. Glasgow, Hunter B. Andrews, Miguel Rodriguez, Jin-Gui Chen, Gerald A. Tuskan, Timothy J. Tschaplinski, David J. Weston, Madhavi Z. Martin, and Wellington Muchero
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ionomics ,GWAS ,plasma-mass spectrometry ,neutron activation analysis ,laser-induced breakdown spectroscopy ,molybdenum transporter ,Plant culture ,SB1-1110 - Abstract
The ionome represents elemental composition in plant tissues and can be an indicator of nutrient status as well as overall plant performance. Thus, identifying genetic determinants governing elemental uptake and storage is an important goal for breeding and engineering biomass feedstocks with improved performance. In this study, we coupled high-throughput ionome characterization of leaf tissues with high-resolution genome-wide association studies (GWAS) to uncover genetic loci that modulate ionomic composition in leaves of poplar (Populus trichocarpa). Significant agreement was observed across the three ionomic profiling platforms tested: inductively coupled plasma-mass spectrometry (ICP-MS), neutron activation analysis (NAA) and laser-induced breakdown spectroscopy (LIBS). Relative quantification of 20 elements using ICP-MS across a population of 584 genotypes, revealed larger variation in micro-nutrients and trace elements content than for macro-nutrients across genotypes. The GWAS performed using a set of high-density (>8.2 million) single nucleotide polymorphisms, identified over 600 loci significantly associated with variations in these mineral elements, pointing to numerous uncharacterized candidate genes. A significant enrichment for genes related to ion homeostasis and transport was observed, including several members of the cation-proton antiporters (CPA) family and MATE efflux transporters, previously reported to be critical for plant growth and fitness in other species. Our results also included a polymorphic copy of the high-affinity molybdenum transporter MOT1 found directly associated to molybdenum content. For the first time in a perennial plant, our results provide evidence of genetic control of mineral content in a model tree species.
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- 2024
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