667 results on '"Fitch A"'
Search Results
2. A pilot cross-sectional investigation of symptom clusters and associations with patient-reported outcomes in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome and Post COVID-19 Condition.
- Author
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Weigel, Breanna, Eaton-Fitch, Natalie, Thapaliya, Kiran, and Marshall-Gradisnik, Sonya
- Abstract
Background: Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) is associated with long-term disability and poor quality of life (QoL). Cardinal ME/CFS symptoms (including post-exertional malaise, cognitive dysfunction and sleep disturbances) have been observed in Post COVID-19 Condition (PCC). To gain further insight into the potential role of ME/CFS as a post-COVID-19 sequela, this study investigates associations between symptoms and patient-reported outcomes, as well as symptom clusters. Methods: Participants included Australian residents aged between 18 and 65 years formally diagnosed with ME/CFS fulfilling the Canadian or International Consensus Criteria or PCC meeting the World Health Organization case definition. Validated, self-administered questionnaires collected participants' sociodemographic and illness characteristics, symptoms, QoL and functional capacity. Associations between symptoms and patient-reported outcomes were investigated with multivariate linear regression models. Hierarchical cluster analysis was performed to identify symptom clusters. Results: Most people with ME/CFS (pwME/CFS) and people with PCC (pwPCC) were female (n = 48/60, 80.0% and n = 19/30, 63.3%, respectively; p = 0.12). PwME/CFS were significantly younger (x̄=41.75, s = 12.91 years) than pwPCC (x̄=48.13, s =10.05 years; p =0.017). Autonomic symptoms (notably dyspnoea) were associated with poorer scores in most patient-reported outcome domains for both cohorts. None of the four symptom clusters identified were unique to ME/CFS or PCC. Clusters were largely delineated by the presence of gastrointestinal and neurosensory symptoms, illness duration, ME/CFS criteria met and total symptoms. Conclusions: Illness duration may explain differences in symptom burden between pwME/CFS and pwPCC. PCC diagnostic criteria must be refined to distinguish pwPCC at risk of long-term ME/CFS-like illness and subsequently deliver necessary care and support. Plain English summary: Post COVID-19 Condition (PCC), or Long COVID, refers to the ongoing symptoms experienced after acute COVID-19 illness. The symptoms reported by people with PCC (pwPCC) resemble Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS). However, existing diagnostic criteria for PCC are broad and cannot discern PCC subtypes (such as pwPCC experiencing ME/CFS-like illness), which may require different approaches to care. This study contributes to improving PCC case criteria and approaches to care for both ME/CFS and PCC by investigating the relationships between symptoms and patient-reported outcomes among pwPCC and people with ME/CFS (pwME/CFS). For both cohorts, symptoms had a negative relationship with all aspects of health. Autonomic symptoms, notably breathing issues, returned the most negative associations. Pain, flu-like symptoms and lack of temperature control appeared more burdensome among pwPCC. These symptoms may signify the early stages of ME/CFS. Symptom clusters were also identified for the first time among a combined cohort of pwME/CFS and pwPCC in this study. Importantly, none of the symptom clusters were specific to ME/CFS or PCC. Instead, symptom clusters were defined by the prevalence of gastrointestinal and neurosensory symptoms, illness duration, ME/CFS criteria met and the total number of symptoms. This study suggests that the few differences between ME/CFS and PCC may be explained by illness duration. These findings further implicate ME/CFS as a potential post-COVID-19 outcome. As ME/CFS is associated with profound reductions in quality of life and functioning, identifying pwPCC experiencing ME/CFS-like illness through refined diagnostic criteria must be prioritised to ensure the delivery of necessary care. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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3. Agnes, Revisited: methods and principles for community-engaged research on historic flood disasters.
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Fitch, Bethany and Stuhl, Andrew
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Stories—and story-tellers—can build resilience. A body of interdisciplinary research demonstrates that personal stories collected and shared in the immediate wake of a flood disaster can improve disaster preparedness and engagement in flood management. This article explores methods and principles for community story-sharing about destructive floods that are not as recent. Agnes, Revisited is a multi-disciplinary, mixed-methods study of the history of Tropical Storm Agnes (1972) in the Susquehanna River Valley (Pennsylvania, United States). "Agnes" was the costliest natural disaster in US history at the time ($3B in 1972; $91B in 2023) and the Susquehanna River Valley withstood catastrophic flooding. Working with partners on and off campus, we wrote an original play based on 48 interviews with storm survivors and archival research on state records, historical images, and historical newspapers. The play both represented a multi-vocal account of Tropical Storm Agnes and catalyzed continued story-sharing about flooding—in the past, present, and future—including an hour-long documentary on Pennsylvania public television and a book with a regional newspaper. This article details the methods we used to devise and execute the play, as well as pursue opportunities for public scholarship that arose because of the play. We highlight seven principles for community engagement that we followed across the project. In support of broader, community-level flood resilience efforts, we encourage scholars to identify anniversaries of historic flood disasters approaching in the next 3 to 5 years and design community-engaged research projects to meet them. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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4. Continuous planning for inertial-aided systems.
- Author
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Usayiwevu, Mitchell, Sukkar, Fouad, Yoo, Chanyeol, Fitch, Robert, and Vidal-Calleja, Teresa
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Inertial-aided systems require continuous motion excitation among other reasons to characterize the measurement biases that will enable accurate integration required for localization frameworks. This paper proposes the use of informative path planning to find the best trajectory for minimizing the uncertainty of IMU biases and an adaptive traces method to guide the planner towards trajectories that aid convergence. The key contribution is a novel regression method based on Gaussian Process (GP) to enforce continuity and differentiability between waypoints from a variant of the RRT ∗ planning algorithm. We employ linear operators applied to the GP kernel function to infer not only continuous position trajectories, but also velocities and accelerations. The use of linear functionals enable velocity and acceleration constraints given by the IMU measurements to be imposed on the position GP model. The results from both simulation and real-world experiments show that planning for IMU bias convergence helps minimize localization errors in state estimation frameworks. [ABSTRACT FROM AUTHOR]
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- 2024
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5. Expanding the Spectrum of Immune Abnormalities in VICI Syndrome.
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Frost, Erin L., Youngblood, Laura Lucas, Hammers, Yuki, Fitch, Taylor, Pencheva, Bojana, and Chandrakasan, Shanmuganathan
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REGULATORY T cells ,T helper cells ,MEDICAL genetics ,GENETICS ,CELL anatomy ,AGENESIS of corpus callosum - Abstract
The letter published in the Journal of Clinical Immunology discusses Vici Syndrome, a rare autosomal recessive disorder caused by mutations in the EPG5 gene. The syndrome is characterized by various symptoms, including immune deficiency, cardiomyopathy, and hypopigmentation. The letter reports on three patients with Vici Syndrome who presented with inflammatory bowel disease and hemophagocytic lymphohistiocytosis, expanding the understanding of immune dysregulation in this population. The study highlights the importance of evaluating patients with Vici Syndrome for immune deficiency and hyperinflammatory states, emphasizing the need for further research on the role of EPG5 in immune regulation. [Extracted from the article]
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- 2024
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6. A comparative study of the secondary benefits of stormwater ponds in economically distinct neighborhoods of Tampa, Florida USA.
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Fitch, Elizabeth R., Tyrna, Abbey, and Lusk, Mary G.
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URBAN runoff ,WILDLIFE watching ,HABITATS ,SHORELINES ,SOCIOECONOMIC status ,PONDS ,URBAN runoff management - Abstract
Stormwater ponds manage urban runoff and mitigate storm-event flooding. Stormwater ponds also offer various secondary advantages such as filtering pollutants, providing a habitat for wildlife, and adding recreational value and access to green spaces to communities. However, stormwater pond features and their potential to offer secondary benefits can vary based on the initial construction and the ongoing maintenance practices. This study developed an assessment tool for evaluating stormwater ponds' expected functioning for secondary benefits, including potential for pollutant filtering by shoreline vegetation, safety, and access by people for activities like walking or wildlife viewing. We used the tool to compare stormwater ponds in East Tampa and Riverview, Florida, communities with contrasting socioeconomic backgrounds. The overall pond functioning was consistent between both communities; however, several distinctions emerged between specific pond attributes. Suburban ponds exhibited narrower buffer zones, lower bank stability, and less lighting. Conversely, ponds in the lower-income East Tampa had lower accessibility due to a higher number of fences, more litter, and inferior water appearance. This study uncovered a need for consideration of stormwater pond secondary benefits in both communities and an untapped potential to transform stormwater ponds into vibrant green spaces. Highlights: Stormwater ponds offer secondary ecological and social benefits, varying by initial construction and upkeep practices. Differences in pond features were noted between inner-city and suburban communities, indicating areas for improvement. There is potential to enhance stormwater ponds as green spaces in all communities, irrespective of socioeconomic status. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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7. Telehealth in Home Visiting for New Mothers: Are Outcomes Different if the First Visits Are in Person?
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Holland, Margaret L., Fitch, Dorothy J., Regmi, Drishtant, and Sadler, Lois S.
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INTIMATE partner violence , *COVID-19 , *CHILD abuse , *SECONDARY analysis , *CHILD development - Abstract
Home visiting programs for new parents have a broad range of goals, including improvements in maternal and child health, reductions in child maltreatment, and improvements in child development. Before 2020, few home visits were conducted through phone or video encounters, i.e., telehealth home visiting (teleHV). However, rapid adoption of teleHV was required by the coronavirus disease 2019 (COVID-19) pandemic. To understand how conducting initial visits via teleHV was associated with outcomes, we performed a secondary data analysis to make use of the natural experiment created by COVID-19. Utilizing data from the Nurse-Family Partnership, a US national evidence-based model, we compared outcomes for families whose initial home visits were in person (enrolled 10/2019 to 1/2020; n = 7066) to those whose first visits were through teleHV (enrolled 4/2020 to 12/2020; n = 14,587). TeleHV at intake was associated with a higher likelihood of elevated depressive symptoms at 12 months (OR = 1.37; 95% CI 1.07, 1.76), a lower likelihood of retention to child's age 12 months (OR = 0.67; 95% CI 0.58, 0.78), a higher likelihood of early drop from the program (OR = 1.77; 95% CI 1.48, 2.12), and fewer screening assessments completed (b = − 0.06; 95% CI − 0.07, − 0.04). No differences were detected between groups for the likelihood of breastfeeding at child's age 6 months, elevated intimate partner violence (IPV) risk, 90% of attempted visits completed, or time to attrition. COVID-19 may have led families in different groups to have different experiences during key points of child development; however, as both groups' involvement in the program occurred primarily during the pandemic, they were both subject to comparable influences. These findings suggest that in-person visits have some advantages in the first months of program involvement. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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8. Associations Between Health Insurance Coverage with HIV Detection and Prevention Behaviors Among Individuals with Undiagnosed HIV or at Increased Risk for HIV Infection in the USA.
- Author
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Foley, Jacklyn D., Klevens, R. Monina, O'Cleirigh, Conall, Fitch, Calvin, Rodriguez, Sara L., and Batchelder, Abigail
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HIV infection risk factors ,DIAGNOSIS of HIV infections ,HIV prevention ,HETEROSEXUALITY ,RESEARCH funding ,SECONDARY analysis ,DATA analysis ,HEALTH insurance ,MULTIPLE regression analysis ,HEALTH policy ,CHI-squared test ,ODDS ratio ,HEALTH behavior ,RESEARCH methodology ,STATISTICS ,SOCIODEMOGRAPHIC factors ,HEALTH equity ,CONFIDENCE intervals ,MEDICAL screening ,PREVENTIVE health services - Abstract
Background: Improving HIV detection and prevention remains a critical public health initiative that requires policy-based solutions. This study sought to compare HIV detection/prevention behaviors before and after healthcare reform in Massachusetts, USA, among heterosexually active persons — the group with the highest reported number of undiagnosed HIV cases. The current study sought to (1) characterize differences in insurance coverage and HIV detection/prevention behaviors between cycles 1 (2006) to 5 (2019); (2) evaluate socio-demographic disparities in insurance coverage accounting for cycle; and (3) evaluate associations between health insurance coverage and HIV detection/prevention behaviors accounting for cycle and socio-demographics. Methods: This is a secondary analysis of the National HIV Behavioral Surveillance (NHBS) project: Boston HET cycle (i.e., made up of heterosexually active persons living in the Boston area) data. Descriptive, bivariate (e.g., chi-square), and multiple logistic and negative binomial loglink regression analyses were conducted. Results: In chi-square analyses with post hoc Bonferroni tests, the proportion of participants with current health insurance significantly increased from cycle 1 (77%) to cycle 2 (95%), p <.001. In the regression models that controlled for NHBS cycle, 1-year change in age (adjusted odds ratio [aOR] = 1.03, 95% confidence interval [CI] = 1.02, 1.05), female gender (aOR = 3.41, 95% CI = 2.48, 4.69), and change in education category (aOR = 1.19, 95% CI = 1.02, 1.39) were associated with a higher likelihood of having health insurance. In regression models that controlled for cycle, age, gender, and education, participants with health insurance were more likely than those without insurance to report seeing a medical provider in the past year (aOR = 3.49, 95% CI = 2.32, 4.66), ever having an HIV test (aOR = 1.52, 95% CI = 0.35, 2.69) and more frequent HIV testing in the past 2 years (incidence rate ratio [IRR] = 1.44, 95% = 1.14, 1.82). Participants with health insurance did not differ from those without insurance in number of vaginal condomless sex partners (IRR = 1.16, 95% CI = 0.95, 1.41) but did report more condomless anal sex partners in the past year (IRR = 1.97, 95% CI = 1.46, 2.65). Conclusions: This study demonstrates how health insurance coverage is positively associated with HIV detection and prevention relevant to both US and international efforts to end the HIV epidemic. [ABSTRACT FROM AUTHOR]
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- 2024
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9. Edible Films Based on Corn Starch and Gelatin Obtained by the Combination of Extrusion and Casting Process: Characterization and Applications.
- Author
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Aguilar-Palazuelos, Ernesto, Fitch-Vargas, Perla Rosa, Delgado-Nieblas, Carlos Iván, López-Diaz, Agustín, Gastélum-Ávila, Aliette, Sánchez-Chilero, Marco Antonio, Limón-Valenzuela, Víctor, Camacho-Hernández, Irma Leticia, Ruiz-Armenta, Xóchitl Ariadna, and Calderón-Castro, Abraham
- Abstract
The development of edible films (EFs) using renewable resources such as gelatin and native corn starch has garnered significant interest due to their potential to enhance food preservation and safety. Combining extrusion with the casting method enhances mechanical and barrier properties by modifying starch and gelatin structures through heat, pressure, and shear. This study aimed to develop, characterize, and optimize the functional properties EFs produced from an extruded formulation of corn starch, gelatin, and glycerol using the casting method. Furthermore, it evaluated the impact of these optimized EFs as coatings on the quality characteristics of the "Kent" mango cultivar. The study factors were gelatin content (GC, 0–10%) and extrusion temperature (ET, 80–120°C). The EFs were characterized and optimized, determining the tensile strength (σ), elongation (ε), water vapor permeability (WVP), and Water Solubility (S), using the surface response methodology. Results showed GC significantly influenced mechanical and barrier properties (P < 0.05), with higher GC increasing σ, ε, WVP, and S. ET also affected mechanical properties (P < 0.05) but not barrier properties (P > 0.05). EFs exhibited σ of 3.14 MPa to 8.34 MPa, ε of 10.55–25.60%, WVP (5.59 × 10
–12 to 6.82 × 10–11 g m Pa-1 s-1 m-2 ), and S from 66.29–80.50%. According to the optimization study, the EFs with the best mechanical and barrier properties were obtained using an ET of 80°C and GC of 2.93%. Applied as coatings on 'Kent' mango, these EFs significantly extended shelf life and preserved postharvest quality. [ABSTRACT FROM AUTHOR]- Published
- 2025
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10. Active and passive waiting in impulsive choice: Effects of fixed-interval and fixed-time delays.
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Smith, Travis, Fitch, Anderson, Deavours, Aubrey, and Kirkpatrick, Kimberly
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TIME management , *RATS , *SELF-control , *SCHEDULING - Abstract
Behavioral interventions to improve self-control, preference for a larger-later (LL) reward over a smaller-sooner (SS) reward, involve experience with delayed rewards. Whether they involve timing processes remains controversial. In rats, there have been inconsistent results on whether timing processes may be involved in intervention-induced improvements in self-control. Interventions that improved self-control with corresponding timing improvements used fixed-interval (FI) delays, whereas interventions that failed to find corresponding timing improvements used fixed-time (FT) delays. The FI schedule includes a response contingency (active waiting), whereas the FT schedule delivers reward automatically (passive waiting). The present study compared the effects of FI and FT schedules in interventions and impulsive choice tasks to evaluate effects on self-control and timing behavior. The impulsive choice task evaluated preference for an SS option (one pellet after 10-, 15-, 20-, 25-, and 30-s delays) versus an LL option (two pellets after a 30-s delay). The intervention task included forced-choice SS (one pellet after 10 s) and LL (two pellets after 30 s) sessions under FI or FT schedules. FI schedules produced greater sensitivity to SS delay in the impulsive choice task. Both FI and FT interventions increased LL choices. Following choice testing, temporal bisection and peak interval tasks revealed better timing precision for rats with an FI delay experience. Overall, the FI choice contingency was associated with improved temporal attention and timing precision. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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11. Illness presentation and quality of life in myalgic encephalomyelitis/chronic fatigue syndrome and post COVID-19 condition: a pilot Australian cross-sectional study.
- Author
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Weigel, Breanna, Eaton-Fitch, Natalie, Thapaliya, Kiran, and Marshall-Gradisnik, Sonya
- Subjects
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POST-acute COVID-19 syndrome , *CHRONIC fatigue syndrome , *PALPITATION , *CHRONIC diseases , *SYMPTOMS - Abstract
Purpose: Post COVID-19 Condition (PCC), being persistent COVID-19 symptoms, is reminiscent of Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS)—a chronic multi-systemic illness characterised by neurocognitive, autonomic, endocrinological and immunological disturbances. This novel cross-sectional investigation aims to: (1) compare symptoms among people with ME/CFS (pwME/CFS) and people with PCC (pwPCC) to inform developing PCC diagnostic criteria; and (2) compare health outcomes between patients and people without acute or chronic illness (controls) to highlight the illness burdens of ME/CFS and PCC. Methods: Sociodemographic and health outcome data were collected from n = 61 pwME/CFS, n = 31 pwPCC and n = 54 controls via validated, self-administered questionnaires, including the 36-Item Short-Form Health Survey version 2 (SF-36v2) and World Health Organization Disability Assessment Schedule version 2.0 (WHODAS 2.0). PwME/CFS and pwPCC also provided self-reported severity and frequency of symptoms derived from the Canadian and International Consensus Criteria for ME/CFS and the World Health Organization case definition for PCC. Results: Both illness cohorts similarly experienced key ME/CFS symptoms. Few differences in symptoms were observed, with memory disturbances, muscle weakness, lymphadenopathy and nausea more prevalent, light-headedness more severe, unrefreshed sleep more frequent, and heart palpitations less frequent among pwME/CFS (all p < 0.05). The ME/CFS and PCC participants' SF-36v2 or WHODAS 2.0 scores were comparable (all p > 0.05); however, both cohorts returned significantly lower scores in all SF-36v2 and WHODAS 2.0 domains when compared with controls (all p < 0.001). Conclusion: This Australian-first investigation demonstrates the congruent and debilitating nature of ME/CFS and PCC, thereby emphasising the need for multidisciplinary care to maximise patient health outcomes. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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12. A Longitudinal Examination of HIV Risk Perception Accuracy among Sexual Minority Men with History of Childhood Sexual Abuse.
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Glynn, Tiffany R., Kirakosian, Norik, Stanton, Amelia M., Westphal, Laura L., Fitch, Calvin, McKetchnie, Samantha M., and O'Cleirigh, Conall
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HIV infection risk factors ,HIV prevention ,PSYCHOTHERAPY ,STATISTICAL models ,RISK-taking behavior ,SECONDARY analysis ,RESEARCH funding ,PSYCHOLOGY of adult child abuse victims ,ATTITUDE (Psychology) ,MEN who have sex with men ,CHILD sexual abuse ,PRE-exposure prophylaxis ,RISK perception ,COGNITIVE therapy ,SEXUAL minorities ,TIME ,ADULTS - Abstract
Men who have sex with men (MSM) with history of childhood sexual abuse (CSA) are at high risk for HIV acquisition. One reason is posttraumatic responses compromise ability to accurately appraise risk for danger/vulnerability. Health behavior change models and related interventions assume risk perception can be changed in an enduring manner. Given paucity of studies examining how risk perception changes or sustains over time post-intervention, this underlying assumption is not confirmed. Among this particularly high-risk group who struggle with perceiving risk due to trauma-related cognitions, it may be accuracy of risk perception is fluid. The study primarily aimed to examine accuracy of HIV risk perception over time post-HIV prevention behavioral intervention. Leveraging data from a larger RCT, N = 190 MSM in Boston, MA and Miami, FL USA completed a psychosocial baseline assessment, an intervention aimed to increase awareness of personal HIV risk level, then four follow-up assessments three months apart for a year. Linear mixed effect models were used to examine the degree to which accuracy of HIV risk perception (vs. traditional construct of risk perception with no information about accuracy) predicts sex risk behavior over time delineated by between-person (trait level) and within-person (state level) effects. Majority (92%) of participants fluctuated in HIV risk accuracy over time post-intervention. Within-person risk accuracy (one's accuracy at any given timepoint) predicted sex risk behavior (condomless sex not protected by adherent PrEP) over time, but not between-person (one's average of accuracy). Findings have implications for intervention and counseling related to specific HIV prevention strategies. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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13. Exploring the Acceptability of Behavioral Swallowing Interventions for Head and Neck Cancer Patients During Radiotherapy: A Qualitative Study of Patients' Experience.
- Author
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Manduchi, Beatrice, Fitch, Margaret I., Ringash, Jolie G., Howell, Doris, Hutcheson, Katherine A., and Martino, Rosemary
- Abstract
The PRO-ACTIVE randomized clinical trial offers 3 swallowing therapies to Head and Neck Cancer (HNC) patients during radiotherapy namely: reactive, proactive low- ("EAT-RT" only), and high-intensity ("EAT-RT + exercises"). Understanding the perceived acceptability of these interventions is important to inform eventual implementation into clinical practice. This study explored patients' perspectives using qualitative methodology. At 2 Canadian PRO-ACTIVE trial sites, 24 trial participants were recruited for individual semi-structured interviews, representing each of the 3 trial arms. Data collection and thematic analysis were guided by the Theoretical Framework of Acceptability (TFA). Member checking was conducted through follow-up focus groups. Seven themes were derived reflecting the TFA constructs. Overall, regardless of trial arm, patients reported a positive experience with therapy. Patients identified benefits of EAT-RT therapy, reporting that it provided meaningful feedback on diet progress and supported goal setting for oral intake. Patients who received proactive therapies valued the opportunity to set expectations early, build mealtime routine iteratively over time, and have an extended engagement with the SLP. Regardless of trial arm, patients agreed proactive therapy aligned with what they think is best and that therapy intensity should accommodate individual needs. This study identified the value to HNC patients of receiving swallowing interventions during RT and setting realistic expectations around swallowing. Compared to reactive care, proactive therapies were perceived helpful in consolidating habits early, establishing realistic expectations around swallowing and building an extended rapport with the SLP. These findings will inform the implementation of proactive versus reactive swallowing therapies in clinical practice. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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14. Changes in protein fluxes in skeletal muscle during sequential stages of muscle regeneration after acute injury in male mice.
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Bizieff, Alec, Cheng, Maggie, Chang, Kelvin, Mohammed, Hussein, Ziari, Naveed, Nyangau, Edna, Fitch, Mark, and Hellerstein, Marc K.
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MUSCLE regeneration ,SKELETAL muscle ,MUSCULAR dystrophy ,MUSCULOSKELETAL system diseases ,PROTEIN synthesis ,ENERGY metabolism - Abstract
Changes in protein turnover play an important role in dynamic physiological processes, including skeletal muscle regeneration, which occurs as an essential part of tissue repair after injury. The inability of muscle tissue to recapitulate this regenerative process can lead to the manifestation of clinical symptoms in various musculoskeletal diseases, including muscular dystrophies and pathological atrophy. Here, we employed a workflow that couples deuterated water (
2 H2 O) administration with mass spectrometry (MS) to systematically measure in-vivo protein turnover rates across the muscle proteome in 8-week-old male C57BL6/J mice. We compared the turnover kinetics of over 100 proteins in response to cardiotoxin (CTX) induced muscle damage and regeneration at unique sequential stages along the regeneration timeline. This analysis is compared to gene expression data from mRNA-sequencing (mRNA-seq) from the same tissue. The data reveals quantitative protein flux signatures in response to necrotic damage, in addition to sequential differences in cell proliferation, energy metabolism, and contractile gene expression. Interestingly, the mRNA changes correlated poorly with changes in protein synthesis rates, consistent with post-transcriptional control mechanisms. In summary, the experiments described here reveal the signatures and timing of protein flux changes during skeletal muscle regeneration, as well as the inability of mRNA expression measurements to reveal changes in directly measured protein turnover rates. The results of this work described here provide a better understanding of the muscle regeneration process and could help to identify potential biomarkers or therapeutic targets. [ABSTRACT FROM AUTHOR]- Published
- 2024
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15. Longitudinal multicompartment characterization of host-microbiota interactions in patients with acute respiratory failure.
- Author
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Kitsios, Georgios D., Sayed, Khaled, Fitch, Adam, Yang, Haopu, Britton, Noel, Shah, Faraaz, Bain, William, Evankovich, John W., Qin, Shulin, Wang, Xiaohong, Li, Kelvin, Patel, Asha, Zhang, Yingze, Radder, Josiah, Dela Cruz, Charles, Okin, Daniel A., Huang, Ching‐Ying, Van Tyne, Daria, Benos, Panayiotis V., and Methé, Barbara
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ADULT respiratory distress syndrome ,CHRONIC obstructive pulmonary disease ,MICROBIAL diversity ,PROGNOSIS ,GUT microbiome ,HUMAN microbiota - Abstract
Critical illness can significantly alter the composition and function of the human microbiome, but few studies have examined these changes over time. Here, we conduct a comprehensive analysis of the oral, lung, and gut microbiota in 479 mechanically ventilated patients (223 females, 256 males) with acute respiratory failure. We use advanced DNA sequencing technologies, including Illumina amplicon sequencing (utilizing 16S and ITS rRNA genes for bacteria and fungi, respectively, in all sample types) and Nanopore metagenomics for lung microbiota. Our results reveal a progressive dysbiosis in all three body compartments, characterized by a reduction in microbial diversity, a decrease in beneficial anaerobes, and an increase in pathogens. We find that clinical factors, such as chronic obstructive pulmonary disease, immunosuppression, and antibiotic exposure, are associated with specific patterns of dysbiosis. Interestingly, unsupervised clustering of lung microbiota diversity and composition by 16S independently predicted survival and performed better than traditional clinical and host-response predictors. These observations are validated in two separate cohorts of COVID-19 patients, highlighting the potential of lung microbiota as valuable prognostic biomarkers in critical care. Understanding these microbiome changes during critical illness points to new opportunities for microbiota-targeted precision medicine interventions. Here, the authors profile the oral, lung, and gut microbiota of 479 patients with acute respiratory failure, revealing that reduced diversity and increased pathogen presence can predict survival outcomes, highlighting the potential for microbiota-based approaches in critical care. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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16. The Acceptability of Behavioural Swallowing Interventions for Head and Neck Cancer Patients During Radiotherapy: A Qualitative Study Exploring Experiences of Clinical Trial Speech-Language Pathologists.
- Author
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Manduchi, Beatrice, Fitch, Margaret I., Ringash, Jolie G., Howell, Doris, Hutcheson, Katherine A., and Martino, Rosemary
- Abstract
The PRO-ACTIVE randomized clinical trial offers 3 swallowing therapies to Head and Neck Cancer (HNC) patients during radiotherapy (RT) namely: reactive, proactive low- ("EAT-RT" only) and high-intensity ("EAT-RT + exercises"). Understanding the experiences of the trial Speech-Language Pathologists (SLPs) will be useful to inform clinical implementation. This study assessed SLP opinions of acceptability and clinical feasibility of the 3 trial therapies. 8 SLPs from 3 Canadian PRO-ACTIVE trial sites participated in individual interviews. Using a qualitative approach, data collection and thematic analysis were guided by the Theoretical Framework of Acceptability. Member checking was conducted through a follow-up focus group with willing participants. Seven themes were derived: intervention coherence, burden, barriers/facilitators, self-efficacy, attitude, ethicality, and perceived effectiveness. SLPs felt all 3 therapies had potential benefit yet perceived more advantages of proactive therapies compared to reactive. Compared to exercises, SLPs particularly endorsed the EAT-RT component. A major barrier was keeping patients motivated, which was impacted by acute toxicity and sometimes conflicting instructions from the healthcare team. Strategies utilized by to overcome barriers included: scaling exercises and/or diet up/down according to the changing patient needs and communicating therapy goals with healthcare team. A model was derived describing the perceived acceptability of the swallowing therapies according to SLPs, based on the interconnection of main themes. Proactive therapies were perceived as more acceptable to trial SLPs, for facilitating patient engagement. The perceived acceptability of the swallowing therapies was related to seven interconnected aspects of providers' experience. These findings will inform the implementation and potential uptake of the PRO-ACTIVE swallowing therapies in clinical practice. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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17. Survivorship care for people affected by advanced or metastatic cancer: MASCC-ASCO standards and practice recommendations.
- Author
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Hart, Nicolas H., Nekhlyudov, Larissa, Smith, Thomas J., Yee, Jasmine, Fitch, Margaret I., Crawford, Gregory B., Koczwara, Bogda, Ashbury, Fredrick D., Lustberg, Maryam B., Mollica, Michelle, Smith, Andrea L., Jefford, Michael, Chino, Fumiko, Zon, Robin, Agar, Meera R., and Chan, Raymond J.
- Abstract
Purpose: People with advanced or metastatic cancer and their caregivers may have different care goals and face unique challenges compared to those with early-stage disease or those nearing the end-of-life. These MASCC-ASCO standards and practice recommendations seek to establish consistent provision of quality survivorship care for people affected by advanced or metastatic cancer. Methods: An expert panel comprising MASCC and ASCO members was formed. Standards and recommendations relevant to the provision of quality survivorship care for people affected by advanced or metastatic cancer were developed through conducting: (1) a systematic review of unmet supportive care needs; (2) a scoping review of cancer survivorship, supportive care, and palliative care frameworks and guidelines; and (3) an international modified Delphi consensus process. Results: A systematic review involving 81 studies and a scoping review of 17 guidelines and frameworks informed the initial standards and recommendations. Subsequently, 77 experts (including 8 people with lived experience) across 33 countries (33% were low-to-middle resource countries) participated in the Delphi study and achieved ≥ 94.8% agreement for seven standards (1. Person-Centred Care; 2. Coordinated and Integrated Care; 3. Evidence-Based and Comprehensive Care; 4. Evaluated and Communicated Care; 5. Accessible and Equitable Care; 6. Sustainable and Resourced Care; 7. Research and Data-Driven Care) and ≥ 84.2% agreement across 45 practice recommendations. Conclusion: Standards of survivorship care for people affected by advanced or metastatic cancer are provided. These MASCC-ASCO standards will support optimization of health outcomes and care experiences by providing guidance to stakeholders in cancer care (healthcare professionals, leaders, and administrators; governments and health ministries; policymakers; advocacy agencies; cancer survivors and caregivers. Practice recommendations may be used to facilitate future research, practice, policy, and advocacy efforts. [ABSTRACT FROM AUTHOR]
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- 2024
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18. Protein mimetic 2D FAST rescues alpha synuclein aggregation mediated early and post disease Parkinson’s phenotypes.
- Author
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Stillman, Nicholas H., Joseph, Johnson A., Ahmed, Jemil, Baysah, Charles Zuwu, Dohoney, Ryan A., Ball, Tyler D., Thomas, Alexandra G., Fitch, Tessa C., Donnelly, Courtney M., and Kumar, Sunil
- Abstract
Abberent protein-protein interactions potentiate many diseases and one example is the toxic, self-assembly of α-Synuclein in the dopaminergic neurons of patients with Parkinson’s disease; therefore, a potential therapeutic strategy is the small molecule modulation of α-Synuclein aggregation. In this work, we develop an Oligopyridylamide based 2-dimensional FragmentAssisted Structure-based Technique to identify antagonists of α-Synuclein aggregation. The technique utilizes a fragment-based screening of an extensive array of non-proteinogenic side chains in Oligopyridylamides, leading to the identification of NS132 as an antagonist of the multiple facets of αSynuclein aggregation. We further identify a more cell permeable analog (NS163) without sacrificing activity. Oligopyridylamides rescue α-Synuclein aggregation mediated Parkinson’s disease phenotypes in dopaminergic neurons in early and post disease Caenorhabditis elegans models. We forsee tremendous potential in our technique to identify lead therapeutics for Parkinson’s disease and other diseases as it is expandable to other oligoamide scaffolds and a larger array of side chains. [ABSTRACT FROM AUTHOR]
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- 2024
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19. Evolutionary novelties underlie sound production in baleen whales.
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Elemans, Coen P. H., Jiang, Weili, Jensen, Mikkel H., Pichler, Helena, Mussman, Bo R., Nattestad, Jacob, Wahlberg, Magnus, Zheng, Xudong, Xue, Qian, and Fitch, W. Tecumseh
- Abstract
Baleen whales (mysticetes) use vocalizations to mediate their complex social and reproductive behaviours in vast, opaque marine environments1. Adapting to an obligate aquatic lifestyle demanded fundamental physiological changes to efficiently produce sound, including laryngeal specializations2–4. Whereas toothed whales (odontocetes) evolved a nasal vocal organ5, mysticetes have been thought to use the larynx for sound production1,6–8. However, there has been no direct demonstration that the mysticete larynx can phonate, or if it does, how it produces the great diversity of mysticete sounds9. Here we combine experiments on the excised larynx of three mysticete species with detailed anatomy and computational models to show that mysticetes evolved unique laryngeal structures for sound production. These structures allow some of the largest animals that ever lived to efficiently produce frequency-modulated, low-frequency calls. Furthermore, we show that this phonation mechanism is likely to be ancestral to all mysticetes and shares its fundamental physical basis with most terrestrial mammals, including humans10, birds11, and their closest relatives, odontocetes5. However, these laryngeal structures set insurmountable physiological limits to the frequency range and depth of their vocalizations, preventing them from escaping anthropogenic vessel noise12,13 and communicating at great depths14, thereby greatly reducing their active communication range.Studies of vocal production in baleen whales show that their larynx has evolved unique structures that enable their low-frequency vocalizations but limit their active communication range. [ABSTRACT FROM AUTHOR]
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- 2024
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20. Development of edible films based on reactive extrusion succinylated corn starch for the preservation of mango (Mangifera indica L. Cv. Kent).
- Author
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Fitch-Vargas, Perla Rosa, Aguilar-Palazuelos, Ernesto, Ruiz-Armenta, Xóchitl Ariadna, Delgado-Nieblas, Carlos Iván, Barraza-Elenes, Claudia, and Calderón-Castro, Abraham
- Subjects
EDIBLE coatings ,MANGO ,REACTIVE extrusion ,CORNSTARCH ,FOOD packaging ,EXTRUSION process ,STARCH - Abstract
Growing concerns over synthetic plastic pollution have spurred interest in biodegradable food packaging. Starch edible films are an eco-friendly alternative that can enhance the shelf life of fruits and vegetables thanks to their excellent oxygen barrier properties. Nonetheless, Starch edible films have several disadvantages, such as low water resistance and poor mechanical properties. Modifying starch through reactive extrusion, particularly succinylation, offers a solution. Therefore, this research aims to prepare edible films using starch modified by succinylation with different safe-food-use degrees of substitution (DS, 0–0.05) through the extrusion process and Glycerol Content (GC, 15–30%). The succinylated starch edible films' (SSEF) functional properties and their effectiveness as a coating for mango preservation were evaluated. Results show that as the DS increased, SSEF had lower barrier properties and higher mechanical properties. Additionally, mangoes coated with SSEF exhibited better postharvest quality (weight loss, ΔE, firmness, pH, TA, and °Brix) than control fruit. [ABSTRACT FROM AUTHOR]
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- 2024
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21. Sexual Networking and HIV/STI Prevention Among Men who have Sex with Men and Identify as Persons of Color in the Era of COVID-19 in Boston, MA: Qualitative Findings from the National HIV Behavioral Surveillance Project.
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O'Cleirigh, Conall, Foley, Jacklyn D., Stanton, Amelia M., McKetchnie, Samantha M., Gulbicki, Lauren R., Muten, Jennifer, Chai, Peter, Fitch, Calvin, Onofrey, Shauna, Klevens, R. Monina, and Psaros, Christina
- Subjects
PREVENTION of sexually transmitted diseases ,HIV prevention ,HEALTH services accessibility ,RESEARCH funding ,PEOPLE of color ,HUMAN sexuality ,INTERVIEWING ,MEN who have sex with men ,SEX customs ,THEMATIC analysis ,HEALTH behavior ,RESEARCH methodology ,COVID-19 pandemic ,SEXUAL health - Abstract
Men who have sex with men and identify as persons of color (MSM of color) are significantly impacted by HIV in the United States. The COVID-19 pandemic may have disproportionately exacerbated HIV-related disparities among MSM of color by affecting sexual networking behaviors and disrupting access to sexual health care. The current study explored the impact of COVID-19 on sexual networking and HIV/sexually transmitted infection (STI) prevention behaviors among MSM of color in Boston, MA. Eighteen semi-structured interviews were conducted via the 2020–2021 Boston sample of the National HIV Behavioral Surveillance (NHBS) project. Eligible participants were at least 18 years old, identified as a man or non-binary person assigned male at birth and as a person of color, and endorsed ever having sex with men. Interviews were coded using inductive and deductive approaches, and themes were extracted using thematic analysis. When participants were asked about the impact of COVID-19 on sexual networking and HIV/STI prevention, the following themes emerged: (1) differing interpretations of COVID-19 public health guidance, (2) behavior change to meet social and sexual needs, (3) limited or changed access to HIV/STI prevention services; and (4) avoidance of healthcare appointments. Overall, the pandemic affected sexual networking and HIV/STI prevention behaviors among MSM of color. Though changes in sexual networking varied, most participants decreased in-person networking, increased dating app use, and prioritized longer-term relationships. Despite loosening of restrictions, these impacts may persist and should inform the adaptation of sexual networking guidance and interventions to mitigate HIV-related disparities in communities of color. [ABSTRACT FROM AUTHOR]
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- 2024
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22. Persistent cervical cancer disparities among American Indian/Alaska Native women: a systematic scoping review exploring the state of the science in this population.
- Author
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Fitch, Katherine C., Nguyen, Christine G. T., Vasquez Guzman, Cirila Estela, Holmes, Rebecca S., and Bruegl, Amanda S.
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INDIGENOUS women ,ALASKA Natives ,CERVICAL cancer ,RACE ,ACCOUNTING methods - Abstract
Purpose: American Indian/Alaska Native (AI/AN) populations experience significantly higher incidence and mortality rates of cervical cancer. The objective of this systematic scoping review is to characterize the volume and nature of research being conducted specific to the AI/AN population regarding cervical cancer and related clinical themes. Methods: This scoping review was conducted in collaboration with the Pacific Northwest Evidence-based Practice Center. Search strategies identified eligible publications from 1990 through 4 February 2022. Two reviewers independently abstracted study data, including clinical area, number of participants and percent inclusion of AI/AN, intervention or risk factor, outcomes reported, Indian Health Service (IHS) Region, and funding source. We used published algorithms to assess study design. Results: Database searches identified 300 unique citations. After full-text evaluation of 129 articles, 78 studies and 9 secondary publications were included (total of 87). Approximately 74% of studies were observational in design, with cross-sectional methodology accounting for 42.7% of all included studies. The most common clinical theme was cervical cancer screening. The most common intervention/exposure was risk factor, typically race (AI/AN compared with other groups) (69%). For studies with documented funding sources, 67% were funded by the US Government. Conclusion: Of the small number of publications identified, the majority are funded through government agencies, are descriptive and/or cross-sectional studies that are hypothesis generating in nature, and fail to represent the diversity of the AI/AN populations in the US. This systematic scoping review highlights the paucity of rigorous research being conducted in a population suffering from a greater burden of disease. [ABSTRACT FROM AUTHOR]
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- 2024
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23. Analysis of rare Parkinson's disease variants in millions of people.
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Pitz, Vanessa, Makarious, Mary B., Bandres-Ciga, Sara, Iwaki, Hirotaka, Aslibekyan, Stella, Auton, Adam, Babalola, Elizabeth, Bell, Robert K., Bielenberg, Jessica, Bryc, Katarzyna, Bullis, Emily, Coker, Daniella, Partida, Gabriel Cuellar, Dhamija, Devika, Das, Sayantan, Elson, Sarah L., Eriksson, Nicholas, Filshtein, Teresa, Fitch, Alison, and Fletez-Brant, Kipper
- Published
- 2024
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24. Cues to individuality in Greylag Goose faces: algorithmic discrimination and behavioral field tests.
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Kleindorfer, Sonia, Heger, Benedikt, Tohl, Damian, Frigerio, Didone, Hemetsberger, Josef, Fusani, Leonida, Fitch, W. Tecumseh, and Colombelli-Négrel, Diane
- Subjects
HUMAN facial recognition software ,GEESE ,INDIVIDUALITY ,PHOTOGRAPHS ,DATABASES - Abstract
Copyright of Journal of Ornithology is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2024
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25. Landscape controls on riverine export of dissolved organic carbon from Great Britain
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Williamson, Jennifer L., Tye, Andrew, Lapworth, Dan J., Monteith, Don, Sanders, Richard, Mayor, Daniel J., Barry, Chris, Bowes, Mike, Bowes, Michael, Burden, Annette, Callaghan, Nathan, Farr, Gareth, Felgate, Stacey, Fitch, Alice, Gibb, Stuart, Gilbert, Pete, Hargreaves, Geoff, Keenan, Patrick, Kitidis, Vassilis, Juergens, Monika, Martin, Adrian, Mounteney, Ian, Nightingale, Philip D., Pereira, M. Gloria, Olszewska, Justyna, Pickard, Amy, Rees, Andrew P., Spears, Bryan, Stinchcombe, Mark, White, Debbie, Williams, Peter, Worrall, Fred, Evans, Chris, Williamson, Jennifer L., Tye, Andrew, Lapworth, Dan J., Monteith, Don, Sanders, Richard, Mayor, Daniel J., Barry, Chris, Bowes, Mike, Bowes, Michael, Burden, Annette, Callaghan, Nathan, Farr, Gareth, Felgate, Stacey, Fitch, Alice, Gibb, Stuart, Gilbert, Pete, Hargreaves, Geoff, Keenan, Patrick, Kitidis, Vassilis, Juergens, Monika, Martin, Adrian, Mounteney, Ian, Nightingale, Philip D., Pereira, M. Gloria, Olszewska, Justyna, Pickard, Amy, Rees, Andrew P., Spears, Bryan, Stinchcombe, Mark, White, Debbie, Williams, Peter, Worrall, Fred, and Evans, Chris
- Abstract
The dissolved organic carbon (DOC) export from land to ocean via rivers is a significant term in the global C cycle, and has been modified in many areas by human activity. DOC exports from large global rivers are fairly well quantified, but those from smaller river systems, including those draining oceanic regions, are generally under-represented in global syntheses. Given that these regions typically have high runoff and high peat cover, they may exert a disproportionate influence on the global land–ocean DOC export. Here we describe a comprehensive new assessment of the annual riverine DOC export to estuaries across the island of Great Britain (GB), which spans the latitude range 50–60° N with strong spatial gradients of topography, soils, rainfall, land use and population density. DOC yields (export per unit area) were positively related to and best predicted by rainfall, peat extent and forest cover, but relatively insensitive to population density or agricultural development. Based on an empirical relationship with land use and rainfall we estimate that the DOC export from the GB land area to the freshwater-seawater interface was 1.15 Tg C year−1 in 2017. The average yield for GB rivers is 5.04 g C m−2 year−1, higher than most of the world’s major rivers, including those of the humid tropics and Arctic, supporting the conclusion that under-representation of smaller river systems draining peat-rich areas could lead to under-estimation of the global land–ocean DOC export. The main anthropogenic factor influencing the spatial distribution of GB DOC exports appears to be upland conifer plantation forestry, which is estimated to have raised the overall DOC export by 0.168 Tg C year−1. This is equivalent to 15% of the estimated current rate of net CO2 uptake by British forests. With the UK and many other countries seeking to expand plantation forest cover for climate change mitigation, this ‘leak in the ecosystem’ should be incorporated in future assessments of the C
- Published
- 2023
26. Can a 5-to-90-day Mortality Predictor Perform Consistently Across Time and Equitably Across Populations?
- Author
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Handler, Jonathan, Lee, Olivia J., Chatrath, Sheena, McGarvey, Jeremy, Fitch, Tyler, Jose, Divya, and Vozenilek, John
- Abstract
Advance care planning (ACP) facilitates end-of-life care, yet many die without it. Timely and accurate mortality prediction may encourage ACP. However, performance of predictors typically differs among sub-populations (e.g., rural vs. urban) and worsens over time (“concept drift”). Therefore, we assessed performance equity and consistency for a novel 5-to-90-day mortality predictor across various demographies, geographies, and timeframes (n = 76,812 total encounters). Predictions were made for the first day of included adult inpatient admissions on a retrospective dataset. AUC-PR remained at 29% both pre-COVID (throughout 2018) and during COVID (8 months in 2021). Pre-COVID-19 recall and precision were 58% and 25% respectively at the 12.5% certainty cutoff, and 12% and 44% at the 37.5% cutoff. During COVID-19, recall and precision were 59% and 26% at the 12.5% cutoff, and 11% and 43% at the 37.5% cutoff. Pre-COVID, compared to the overall population, recall was lower at the 12.5% cutoff in the White, non-Hispanic subgroup and at both cutoffs in the rural subgroup. During COVID-19, precision at the 12.5% cutoff was lower than that of the overall population for the non-White and non-White female subgroups. No other significant differences were seen between subgroups and the corresponding overall population. Overall performance during COVID was unchanged from pre-pandemic performance. Although some comparisons (especially precision at the 37.5% cutoff) were underpowered, precision at the 12.5% cutoff was equitable across most demographies, regardless of the pandemic. Mortality prediction to prioritize ACP conversations can be provided consistently and equitably across many studied timeframes and sub-populations. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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27. Early Insights into Implementation of Universal Screening, Brief Intervention, and Referral to Treatment for Perinatal Substance Use.
- Author
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Reese, Sarah E., Glover, Annie, Fitch, Stephanie, Salyer, Joe, Lofgren, Valerie, and McCracken III, Clayton "Tersh"
- Subjects
EVALUATION of human services programs ,MATERNAL health services ,SUBSTANCE abuse in pregnancy ,FOCUS groups ,RESEARCH methodology ,MEDICAL screening ,INTERVIEWING ,MEDICAL referrals ,RESEARCH funding ,DESCRIPTIVE statistics ,THEMATIC analysis ,OUTPATIENT services in hospitals ,TELEMEDICINE ,MEDICAL needs assessment ,PERINATAL period - Abstract
Objectives: Perinatal substance use is a growing concern across the United States. Universal screening, brief intervention, and referral to treatment (SBIRT) is one systems-level approach to addressing perinatal substance use. The objective of this study is to assess early efforts to implement SBIRT in an outpatient obstetric clinic. Methods: The research team implemented universal screening with the 5 P's screening tool. Providers then engaged patients in a brief intervention and referred to a care manager who then worked with patients via tele-health to connect patients with needed services. Feasibility was measured through the collection of aggregate data describing frequency of universal screening and referral to treatment. The implementation team met bi-weekly to reflect on implementation barriers and facilitators. Results: In the first year of implementation, 48.5% of patients receiving care in the clinic completed the 5 P's screener at least once during the perinatal period. Screening occurred in a little over a quarter (26.5%) of eligible visits. Of the 463 patients that completed the 5 P's at least once during the perinatal period, 195 (42%) unique patients screened positive (answered yes to at least one question). Conclusions for Practice: Early implementation efforts suggest this approach is feasible in this obstetric setting. Similar implementation studies should consider implementing universal screening for substance use and perinatal mood and anxiety disorders simultaneously; guide efforts using an implementation framework; invest resources in more intensive training and ongoing coaching for providers; and adopt strategies to track frequency and fidelity of brief intervention. Significance: Universal screening, brief intervention, and referral to treatment is a systems-level approach to addressing perinatal substance use, which is recommended by WHO, SAMHSA, USPSTF, and ACOG. Despite these recommendations, many clinics have not implemented SBIRT. There are few studies of implementation in settings that serve a high rate of rural and Indigenous patients. This study details the experiences and lessons learned from early efforts to implement SBIRT in an outpatient obstetric setting serving high rates of rural and Indigenous patients. This description is followed by a discussion of how findings will direct future implementation efforts in this and similar settings. [ABSTRACT FROM AUTHOR]
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- 2023
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28. Mycorrhiza Better Predict Soil Fungal Community Composition and Function than Aboveground Traits in Temperate Forest Ecosystems.
- Author
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Fitch, Amelia A., Lang, Ashley K., Whalen, Emily D., Helmers, Eliza M., Goldsmith, Sarah G., and Hicks Pries, Caitlin
- Subjects
- *
TEMPERATE forest ecology , *FUNGAL communities , *MYCORRHIZAS , *EXTRACELLULAR enzymes , *HYDROLASES , *SOIL horizons - Abstract
Forests in the northeastern US are experiencing shifts in community composition due to the northward migration of warm-adapted tree species and certain species' declines (for example, white ash and eastern hemlock) due to invasive insects. Changes in belowground fungal communities and associated functions will inevitably follow. Therefore, we sought to investigate the relative importance of two important tree characteristics—mycorrhizal type [ectomycorrhizal (EcM) or arbuscular mycorrhizal (AM)] and leaf habit (deciduous or evergreen) on soil fungal community composition and organic matter cycling. We sampled soil in the organic and mineral horizons beneath two AM-associated (Fraxinus americana and Thuja occidentalis) and two ECM-associated tree species (Betula alleghaniensis and Tsuga canadensis), with an evergreen and deciduous species in each mycorrhizal group. To characterize fungal communities and organic matter decomposition beneath each tree species, we sequenced the ITS1 region of fungal DNA and measured the potential activity of carbon- and nitrogen-targeting extracellular enzymes. Each tree species harbored distinct fungal communities, supporting the need to consider both mycorrhizal type and leaf habit. However, between tree characteristics, mycorrhizal type better predicted fungal communities. Across fungal guilds, saprotrophic fungi were the most important group in shaping fungal community differences in soils beneath all tree species. The effect of leaf habit on carbon- and nitrogen-targeting hydrolytic enzymes depended on tree mycorrhizal association in the organic horizon, while oxidative enzyme activities were higher beneath EcM-associated trees across both soil horizons and leaf habits. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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29. Conserved enhancers control notochord expression of vertebrate Brachyury.
- Author
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Kemmler, Cassie L., Smolikova, Jana, Moran, Hannah R., Mannion, Brandon J., Knapp, Dunja, Lim, Fabian, Czarkwiani, Anna, Hermosilla Aguayo, Viviana, Rapp, Vincent, Fitch, Olivia E., Bötschi, Seraina, Selleri, Licia, Farley, Emma, Braasch, Ingo, Yun, Maximina, Visel, Axel, Osterwalder, Marco, Mosimann, Christian, Kozmik, Zbynek, and Burger, Alexa
- Subjects
NOTOCHORD ,NEURAL tube defects ,VERTEBRATES - Abstract
The cell type-specific expression of key transcription factors is central to development and disease. Brachyury/T/TBXT is a major transcription factor for gastrulation, tailbud patterning, and notochord formation; however, how its expression is controlled in the mammalian notochord has remained elusive. Here, we identify the complement of notochord-specific enhancers in the mammalian Brachyury/T/TBXT gene. Using transgenic assays in zebrafish, axolotl, and mouse, we discover three conserved Brachyury-controlling notochord enhancers, T3, C, and I, in human, mouse, and marsupial genomes. Acting as Brachyury-responsive, auto-regulatory shadow enhancers, in cis deletion of all three enhancers in mouse abolishes Brachyury/T/Tbxt expression selectively in the notochord, causing specific trunk and neural tube defects without gastrulation or tailbud defects. The three Brachyury-driving notochord enhancers are conserved beyond mammals in the brachyury/tbxtb loci of fishes, dating their origin to the last common ancestor of jawed vertebrates. Our data define the vertebrate enhancers for Brachyury/T/TBXTB notochord expression through an auto-regulatory mechanism that conveys robustness and adaptability as ancient basis for axis development. This study identifies three conserved shadow enhancers (T3, C, I) regulating notochord expression of Brachyury across vertebrates using genomic data, transgenic assays, and enhancer knockouts, which are critical for vertebrate notochord development. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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30. Estimating the contribution of CD4 T cell subset proliferation and differentiation to HIV persistence.
- Author
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Reeves, Daniel B., Bacchus-Souffan, Charline, Fitch, Mark, Abdel-Mohsen, Mohamed, Hoh, Rebecca, Ahn, Haelee, Stone, Mars, Hecht, Frederick, Martin, Jeffrey, Deeks, Steven G., Hellerstein, Marc K., McCune, Joseph M., Schiffer, Joshua T., and Hunt, Peter W.
- Subjects
T cells ,HIV ,CD4 antigen ,CELL proliferation ,PHYSIOLOGY ,HIV-positive persons - Abstract
Persistence of HIV in people living with HIV (PWH) on suppressive antiretroviral therapy (ART) has been linked to physiological mechanisms of CD4+ T cells. Here, in the same 37 male PWH on ART we measure longitudinal kinetics of HIV DNA and cell turnover rates in five CD4 cell subsets: naïve (T
N ), stem-cell- (TSCM ), central- (TCM ), transitional- (TTM ), and effector-memory (TEM ). HIV decreases in TTM and TEM but not in less-differentiated subsets. Cell turnover is ~10 times faster than HIV clearance in memory subsets, implying that cellular proliferation consistently creates HIV DNA. The optimal mathematical model for these integrated data sets posits HIV DNA also passages between CD4 cell subsets via cellular differentiation. Estimates are heterogeneous, but in an average participant's year ~10 (in TN and TSCM ) and ~104 (in TCM , TTM , TEM ) proviruses are generated by proliferation while ~103 proviruses passage via cell differentiation (per million CD4). In simulations, therapies blocking proliferation and/or enhancing differentiation could reduce HIV DNA by 1-2 logs over 3 years. In summary, HIV exploits cellular proliferation and differentiation to persist during ART but clears faster in more proliferative/differentiated CD4 cell subsets and the same physiological mechanisms sustaining HIV might be temporarily modified to reduce it. The authors used mathematical modeling of human data to study how HIV persists despite suppressive antiretroviral therapy. They found that when latently infected CD4+ T cells proliferate or differentiate, they can create HIV DNA and passage it into other subsets. More mature CD4 cell subsets then clear HIV DNA faster. [ABSTRACT FROM AUTHOR]- Published
- 2023
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31. The metabolic fate of izencitinib, a gut-selective pan-JAK inhibitor, in humans. Identification of unusual fecal metabolites and implications for MIST evaluation.
- Author
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Yeola, Suresh, Badagnani, Ilaria, Huang, Xiaojun, Segraves, Nathanial L., Rapta, Miroslav, Borin, Marie T., Obedencio, Glenmar P., Fitch, William L., Baillie, Thomas A., and Bourdet, David L.
- Abstract
Izencitinib is a novel, orally administered pan-JAK inhibitor designed as a gut-selective therapy that was under development for the treatment of inflammatory bowel disease. The objectives of this study were to define the mass balance, routes and rates of excretion, and metabolic fate of izencitinib after oral administration of [
14 C]-izencitinib in humans. Six healthy adult male subjects were administered a single 100 mg (~300 μCi) oral dose of [14 C]-izencitinib. Fecal excretion was the dominant route of elimination with >90% of the administered dose recovered in the feces. As expected by design, plasma concentrations of total radioactivity and izencitinib were low with the mean terminal half-life of total radioactivity (138 h) exceeding that of izencitinib (32.4 h). Izencitinib represented approximately 17% of the total circulating radioactivity, suggesting the presence of multiple circulating plasma metabolites. However, no individual metabolite exceeded 10% of total drug-related material in plasma. The major metabolites in feces, M18 and M9, were found to have unusual structures that reflected the presence of a nucleophilic carbon center in the naphthyridine ring of izencitinib. Proposed mechanisms for the formation of these metabolites involved oxidation and rearrangement (M18) and a one-carbon addition, potentially occurring through reaction with endogenous formaldehyde. Given the gut-selective properties of izencitinib, it is proposed that these novel fecal metabolites are the most relevant for evaluating the impact of metabolism on the pharmacological and toxicological properties of izencitinib, and that the circulating plasma metabolite profile is of little consequence in the assessment of the safety characteristics of izencitinib metabolites. [ABSTRACT FROM AUTHOR]- Published
- 2023
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32. Cysteine-rich intestinal protein 1 is a novel surface marker for human myometrial stem/progenitor cells.
- Author
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Paul, Emmanuel N., Carpenter, Tyler J., Fitch, Sarah, Sheridan, Rachael, Lau, Kin H., Arora, Ripla, and Teixeira, Jose M.
- Subjects
UTERINE fibroids ,INTESTINES ,STEM cells ,MYOMETRIUM ,PROTEINS - Abstract
Myometrial stem/progenitor cells (MyoSPCs) have been proposed as the cells of origin for uterine fibroids, but the identity of the MyoSPC has not been well established. We previously identified SUSD2 as a possible MyoSPC marker, but the relatively poor enrichment in stem cell characteristics of SUSD2+ over SUSD2- cells compelled us to find better markers. We combined bulk RNA-seq of SUSD2+/- cells with single cell RNA-seq to identify markers for MyoSPCs. We observed seven distinct cell clusters within the myometrium, with the vascular myocyte cluster most highly enriched for MyoSPC characteristics and markers. CRIP1 expression was found highly upregulated by both techniques and was used as a marker to sort CRIP1+/PECAM1- cells that were both enriched for colony forming potential and able to differentiate into mesenchymal lineages, suggesting that CRIP1+/PECAM1- cells could be used to better study the etiology of uterine fibroids. Combined bulk and single-cell RNA-sequencing leads to the identification of Cysteine-Rich Intestinal Protein 1 as marker for myometrial stem/progenitor cells. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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33. Perspectives of Young Men Who Have Sex with Men on PrEP Adherence and Peer Navigation: A Qualitative Study.
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McKetchnie, Samantha M., White, Bradley, Fontenot, Holly, Dormitzer, Julian, Psaros, Christina, Fitch, Calvin, O'Cleirigh, Conall, Mayer, Kenneth H., and Krakower, Douglas S.
- Subjects
YOUNG men ,MEN who have sex with men ,SEXUAL orientation ,PRE-exposure prophylaxis ,HIV-positive men - Abstract
HIV incidence is disproportionately high among young cisgender men who have sex with men (YMSM), but YMSM are less likely than adults to use HIV pre-exposure prophylaxis (PrEP). Among YMSM living with HIV, peer navigation programs have been effective in linkage to care and increasing medication adherence; such programs may aid HIV-uninfected YMSM in overcoming barriers to engagement in PrEP care. We conducted 32 semi-structured qualitative interviews at a community health center in Massachusetts, USA, specializing in sexual and gender minority health with four sub-groups of YMSM who: (1) had never discussed PrEP with a medical provider, (2) had discussed PrEP with a medical provider but declined a prescription, (3) were prescribed PrEP and have sub-optimal adherence (taking fewer than 4 pills per week), and (4) were prescribed PrEP and were optimally adherent. Domains addressed in the interviews included knowledge of PrEP and HIV prevention, barriers and facilitators to PrEP adherence, and attitudes toward peer navigation for PrEP. Interviews were transcribed and coded using thematic analysis methodology. Multiple themes emerged from the interviews, including finding that perceived costs, anticipated stigma, sexual activity, and relationship status influence PrEP uptake and adherence; establishing pill-taking routines is an important adherence facilitator; and peer navigators could offer benefits for PrEP adherence. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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34. Revealing Strategies for Sexual Adjustments Among Ostomates in Indonesia.
- Author
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Afiyanti, Yati, Fitch, Margaret I., Helen, Helen, Andjarwati, Ria, Rudi, Rudi, Prawesti, April D., and Juliastuti, Dyah
- Subjects
- *
SURGICAL stomas , *CULTURE , *SOCIAL support , *HUMAN sexuality , *RESEARCH methodology , *INTERVIEWING , *OSTOMY , *ATTITUDES toward sex , *PATIENTS' attitudes , *PHYSICAL activity , *PHENOMENOLOGY , *QUALITATIVE research , *DESCRIPTIVE statistics , *RESEARCH funding , *PATIENT care , *JUDGMENT sampling , *THEMATIC analysis - Abstract
As the fourth highest cancer in Indonesia, colorectal cancer (CRC) is one paramount cancer issue that requires urgent healthcare management. Most CRC survivors must undergo ostomy surgery to prevent malignancy and death. The stoma formation negatively impacts the ostomates' quality of life as it predominantly affects these people's sexual function, satisfaction, and social life. This study explores in-depth sexual experiences and perspectives of people living with a stoma and their physical, psychological, and cultural influences. This phenomenological qualitative study involved 12 female and male ostomates recruited purposively from the National Cancer Centre Hospital in Indonesia. Qualitative data were collected through semi-structured interviews, managed using Nvivo 12, and analysed thematically. The contextual findings highlighted four significant themes: sexual disruptions, revealing strategies for sexual adjustments, support from the marital partner, and limited support from the healthcare professionals. An interdisciplinary team supporting the sexual needs of the ostomates is necessary to improve strategies for adjusting to the sexual disruptions after CRC therapy. Pre- and post-stoma surgery counselling is recommended for CRC patients and their partners. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
35. Functional characterization of edible films based on reactive extrusion acetylated corn starch.
- Author
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Aguilar-Palazuelos, Ernesto, Fitch-Vargas, Perla Rosa, Pérez-Vega, Luis Fernando, Camacho-Hernández, Irma Leticia, de Jesús Zazueta-Morales, José, and Calderón-Castro, Abraham
- Subjects
CORNSTARCH ,REACTIVE extrusion ,EDIBLE coatings ,FOOD preservation ,HYDROGEN bonding interactions ,RESPONSE surfaces (Statistics) ,PLASTIC scrap - Abstract
There is great interest in developing edible films (EFs) with functional properties made from renewable resources to solve environmental problems associated with plastic waste and improve food preservation and safety. Corn starch is the main raw material employed for producing EFs due to its biodegradability, and availability. Nonetheless, the hydrogen bonding interactions of the native starch structure are strong, limiting its use in the development of bioplastics. In addition, starch-based materials are hydrophilic and lack mechanical integrity. A measure to overcome these disadvantages is the starch native structure modification by a reactive extrusion, where acetylation is one of the most applied chemical modifications. The functionality of acetylated modified corn starch is determined by the degree of substitution (DS). Glycerol is a widely used plasticizer in the food area and is essential in forming starch-based EFs, improving their flexibility and elongation. Hence, this research aimed to develop acetylated modified corn starch edible films (AcEFs) with a DS (0–0.2) and Glycerol Content (GC) (15–30%) to improve its functional properties. The acetylated modified corn starch was obtained by reactive extrusion. The casting technique was used to obtain AcEFs; these were characterized and optimized, evaluating the deformation, puncture resistance, carbon dioxide permeability, water vapor permeability, and water solubility. The data was analyzed using the surface response methodology, and the optimization was carried out using the numerical method. According to the optimization study, the AcEFs with the best mechanical and barrier properties were obtained with 0.16 DS and 18.30% GC. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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- View/download PDF
36. Microlearning through the Lens of Gagne's Nine Events of Instruction: A Qualitative Study.
- Author
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McNeill, Laura and Fitch, Donna
- Subjects
- *
MICROLEARNING , *STUDENT engagement , *ONLINE education , *QUALITATIVE research , *THEMATIC analysis , *MIXED-use developments - Abstract
Microlearning provides a valuable and efficient strategy for delivering content to students. As online enrollments continue to increase, further research is needed to determine how students experience microlearning in an online learning format. In this qualitative study, a focus group was used to explore how learners experienced an online microlearning activity through the lens of Robert Gagné's nine events of instruction. Gagné's framework is designed to maximize cognitive processing and learner engagement. Using a hybrid process of deductive and inductive thematic analysis, learners' experiences were used to determine if each of Gagné's nine events were present during a selected online microlearning activity. This study revealed that eight of Gagné's nine events were detected. The results provide faculty with a better understanding of how students experience online microlearning and will inform faculty and course designers of critical elements to consider in the development of future online microlearning instruction. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
37. Regional Differences in Added Sweetener Knowledge, Consumption and Body Mass Index in People with HIV in the United States.
- Author
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Kileel, Emma M., Dickins, Kirsten A., Blossom, Jeff, Looby, Sara E., and Fitch, Kathleen V.
- Subjects
HIV-positive persons ,FOOD consumption ,POPULATION geography ,SWEETENERS ,HEALTH literacy ,SURVEYS ,NUTRITION education ,MAPS ,DESCRIPTIVE statistics ,RESEARCH funding ,BODY mass index - Abstract
Copyright of AIDS & Behavior is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2023
- Full Text
- View/download PDF
38. Posttraumatic Cognitions and Condomless Sex Among Men Who Have Sex with Men (MSM) with a History of Childhood Sexual Abuse: The Role of Avoidance Coping.
- Author
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Hall, Daniel L., Batchelder, Abigail W., Fitch, Calvin J., Glynn, Tiffany R., Ironson, Gail, Mizrach, Helen, Safren, Steven A., and O'Cleirigh, Conall
- Subjects
STATISTICS ,CHILD sexual abuse ,CONFIDENCE intervals ,COGNITION ,POST-traumatic stress disorder ,PEARSON correlation (Statistics) ,DESCRIPTIVE statistics ,RESEARCH funding ,MEN who have sex with men ,DATA analysis software ,DATA analysis ,UNSAFE sex - Abstract
This study explicated associations between trauma-related cognitions and condomless sex, examining avoidance coping style and behavior (i.e., substance use) as intermediate variables, among a group disproportionately affected by both trauma and HIV. Two hundred and ninety HIV-negative MSM with a history of childhood sexual abuse (CSA) completed a cross-sectional psychosocial battery. Trauma-related cognitions were positively associated with more acts of condomless sex. Indirect associations on condomless sex were driven by avoidance coping, but not substance use. Findings indicate a need to address trauma-related cognitions and avoidance coping within interventions for reducing HIV risk among MSM with a history of CSA. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
39. Refocusing cancer supportive care: a framework for integrated cancer care.
- Author
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Krishnasamy, Meinir, Hyatt, Amelia, Chung, Holly, Gough, Karla, and Fitch, Margaret
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CANCER ,HEALTH systems agencies ,CANCER patients ,THEORY of change ,METHODOLOGY - Abstract
Objective : Cancer supportive care comprises an integrative field of multidisciplinary services necessary for people affected by cancer to manage the impact of their disease and treatment and achieve optimal health outcomes. The concept of supportive care, largely driven by Margaret Fitch's seminal supportive care framework, was developed with the intent to provide health service planners with a conceptual platform to plan and deliver services. However, over time, this concept has been eroded, impacting implementation and practice of supportive care. This study therefore aimed to examine expert contemporary views of supportive care with the view to refocusing the definition and conceptual framework of cancer supportive care to enhance relevance to present-day cancer care. Methods: A two-round online modified reactive Delphi survey was employed to achieve consensus regarding terminology to develop a contemporary conceptual framework. A listing of relevant cancer supportive care terms identified through a scoping review were presented for assessment by experts. Terms that achieved ≥ 75% expert agreement as 'necessary' were then assessed using Theory of Change (ToC) to develop consensus statements and a conceptual framework. Results: A total of 55 experts in cancer control with experience in developing, advising on, delivering, or receiving supportive care in cancer took part in the Delphi surveys. Expert consensus assessed current terminology via Delphi round 1, with 124 terms deemed relevant and 'necessary' per pre-specified criteria. ToC was applied to consensus terms to develop three key statements of definition, and a comprehensive conceptual framework, which were presented for expert consensus review in Delphi round 2. Conclusion: Finalised definitions and conceptual framework are strongly aligned with relevant international policy and advocacy documents, and strengthen focus on early identification, timely intervention, multidisciplinary collaboration, and end-to-end, cross-sector, cancer supportive care. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
40. Factors influencing cancer survivors' experiences with follow-up cancer care: results from the pan-Canadian Experiences of Cancer Patients in Transition Study survey.
- Author
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Delisle, Megan, Fitch, Margaret, Nagaratnam, Kalki, Wang, Ying, and Srikanthan, Amirrtha
- Abstract
Purpose: The purpose of this study was to examine the influence of individual and structural factors on cancer survivors' experiences with follow-up cancer care. Methods: In 2016, the Canadian Partnership Against Cancer collected survey responses from cancer survivors about their experiences with follow-up cancer care. We included respondents from this survey if they were diagnosed with non-metastatic breast, hematologic, colon, melanoma, and prostate cancer. Our primary outcome was cancer survivors' self-reported overall experience with follow-up cancer care. We used multivariable logistic regression to examine the influence of individual and structural factors on cancer survivors' experiences with follow-up cancer care. Results: Of the 8402 cancer survivors included in our study, 81.8% (n = 6,875) reported a positive experience with their follow-up cancer care. The individual factors associated with positive overall experiences were more commonly those associated with self-perceptions of respondents' personal health and well-being rather than baseline sociodemographic factors, such as sex, income, or education. For example, respondents were more likely to report a positive experience if they perceived their quality of life as good (OR 1.9, 95% CI 1.0–3.5, p < 0.01) or reported not having an unmet practical concern (OR 1.3, 95% CI 1.1–1.6, p < 0.01). The structural factors most strongly associated with positive overall experiences included respondents perceiving their oncology specialist was in charge of their follow-up cancer care (OR 5.2, 95% CI 3.6–7.5, p < 0.01) and reporting the coordination of their follow-up cancer care among healthcare providers was good or very good (OR 8.4, 95% CI 6.7–10.6, p < 0.01). Conclusion: While real-world experiences with follow-up cancer care in Canada are reported to be positive by most cancer survivors included in this study, we found differences exist based on individual and structural factors. A better understanding of the reasons for these differences is required to guide the provision of high-quality follow-up care that is adapted to the needs and resources of individuals and contexts. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
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41. Reduced Intensity Conditioning Allogeneic Transplant for SCID Associated with Cartilage Hair Hypoplasia.
- Author
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Fitch, Taylor, Bleesing, Jack, Marsh, Rebecca A., and Chandra, Sharat
- Subjects
- *
SEVERE combined immunodeficiency , *GRAFT versus host disease , *PRIMARY immunodeficiency diseases - Abstract
Lineage specific chimerism in these five patients demonstrated a median donor T-cell chimerism of 95% (range 82-99%) but lower median levels of donor chimerism in the myeloid and B-cell lineages of 45% (11-80.8%) and 4% (1.3-25%), respectively. Notably, all surviving patients experienced T-cell reconstitution and maintained donor T-cell chimerism greater than 90%, which is the critical lineage in SCID. CMV viremia occurred in three patients (50%), EBV viremia in three patients (50%), adenoviremia in one patient (17%), and norovirus enteritis in one patient (17%). [Extracted from the article]
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- 2022
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- View/download PDF
42. Exercise counselling and referral in cancer care: an international scoping survey of health care practitioners' knowledge, practices, barriers, and facilitators.
- Author
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Ramsey, Imogen, Chan, Alexandre, Charalambous, Andreas, Cheung, Yin Ting, Darling, H. S., Eng, Lawson, Grech, Lisa, Hart, Nicolas H., Kirk, Deborah, Mitchell, Sandra A., Poprawski, Dagmara, Rammant, Elke, Fitch, Margaret I., and Chan, Raymond J.
- Abstract
Purpose: Evidence supports the role of prescribed exercise for cancer survivors, yet few are advised to exercise by a healthcare practitioner (HCP). We sought to investigate the gap between HCPs' knowledge and practice from an international perspective. Methods: An online questionnaire was administered to HCPs working in cancer care between February 2020 and February 2021. The questionnaire assessed knowledge, beliefs, and practices regarding exercise counselling and referral of cancer survivors to exercise programs. Results: The questionnaire was completed by 375 participants classified as medical practitioners (42%), nurses (28%), exercise specialists (14%), and non-exercise allied health practitioners (16%). Between 35 and 50% of participants self-reported poor knowledge of when, how, and which cancer survivors to refer to exercise programs or professionals, and how to counsel based on exercise guidelines. Commonly reported barriers to exercise counselling were safety concerns, time constraints, cancer survivors being told to rest by friends and family, and not knowing how to screen people for suitability to exercise (40–48%). Multivariable logistic regression models including age, gender, practitioner group, leisure-time physical activity, and recall of guidelines found significant effects for providing specific exercise advice (χ
2 (7) = 117.31, p <.001), discussing the role of exercise in symptom management (χ2 (7) = 65.13, p <.001) and cancer outcomes (χ2 (7) = 58.69, p <.001), and referring cancer survivors to an exercise program or specialist (χ2 (7) = 72.76, p <.001). Conclusion: Additional education and practical support are needed to equip HCPs to provide cancer survivors with exercise guidelines, resources, and referrals to exercise specialists. [ABSTRACT FROM AUTHOR]- Published
- 2022
- Full Text
- View/download PDF
43. Individual and structural-level Correlates of Pre-exposure Prophylaxis (PrEP) lifetime and current use in a nationwide sample of young sexual and gender minorities.
- Author
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Fitch, Calvin, Haberer, Jessica E., Serrano, Pedro A., Muñoz, Alejandro, French, Audrey L., and Hosek, Sybil G.
- Subjects
HIV infection risk factors ,CROSS-sectional method ,AGE distribution ,RACE ,POPULATION geography ,MEDICAL care use ,SEXUAL minorities ,QUESTIONNAIRES ,LOGISTIC regression analysis ,MEN who have sex with men ,ETHNIC groups ,CISGENDER people ,INSURANCE ,EDUCATIONAL attainment - Abstract
Copyright of AIDS & Behavior is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
- Full Text
- View/download PDF
44. The Relationship Between Present-Centered Awareness and Attention, Burnout, and Compassion Fatigue in Oncology Health Professionals
- Author
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Hegel, Jamie, Halkett, Georgia, Schofield, Penelope, Rees, Clare, Heritage, brody, Suleman, Sahil, Inhestern, Laura, Butler, Thomas, Fitch, Margaret, Breen, Lauren, Hegel, Jamie, Halkett, Georgia, Schofield, Penelope, Rees, Clare, Heritage, brody, Suleman, Sahil, Inhestern, Laura, Butler, Thomas, Fitch, Margaret, and Breen, Lauren
- Abstract
Objectives: Oncology health professionals experience high levels of burnout and compassion fatigue, affecting their health and the care they provide. This study aimed to establish whether present-centered awareness and attention (a component of mindfulness) is uniquely associated with burnout and compassion fatigue in oncology professionals. Methods: An international sample of oncology professionals (n = 118) completed an online questionnaire with validated measures of present-centered awareness and attention, empathy, compassion fatigue, and burnout. Hierarchical multiple regressions were used to model relations among the independent variable (present-centered awareness and attention) and the criterion variables of burnout (disengagement, exhaustion) and compassion fatigue (compassion satisfaction, compassion burnout, secondary traumatic stress) after statistically controlling for empathy, age, gender, years of experience, and patient contact hours. Results: Mean hours of patient contact per week was 23.52 (SD = 13.62), with 26 (22.03%) reporting 40 h or more. Higher hours of patient contact per week were positively associated with secondary traumatic stress. Present-centered awareness and attention was associated with lower disengagement, lower emotional exhaustion, higher compassion satisfaction, lower secondary traumatic stress, and lower compassion burnout. In each model, present-centered awareness accounted for unique variance after controlling for age, gender, years of experience, patient contact hours per week, and empathy scores. The amount of unique variance accounted for by present-centered awareness ranged from 4 to 10%. Conclusions: Oncology professionals reporting higher levels of present-centered awareness and attention reported higher compassion satisfaction and lower secondary traumatic stress, compassion burnout, exhaustion, and disengagement. Promoting present-centered awareness may be a mechanism that contributes to less burnout in oncology profe
- Published
- 2021
45. Exercise for people with bone metastases: MASCC endorsed clinical recommendations developed by the International Bone Metastases Exercise Working Group.
- Author
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Hart, Nicolas H., Poprawski, Dagmara M., Ashbury, Fred, Fitch, Margaret I., Chan, Raymond J., Newton, Robert U., and Campbell, Kristin L.
- Abstract
The article discusses the endorsement by the Multinational Association of Supportive Care in Cancer (MASCC) of the world's first clinical exercise recommendations for people with bone metastases developed by the International Bone Metastases Exercise Working Group (IBMEWG). It explains the importance of the exercise recommendations to clinicians and patients. It provides a summary of the exercise recommendations and describes the process of developing them.
- Published
- 2022
- Full Text
- View/download PDF
46. Design optimization of a magnesium-based metal hydride hydrogen energy storage system.
- Author
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Larpruenrudee, Puchanee, Bennett, Nick S., Gu, YuanTong, Fitch, Robert, and Islam, Mohammad S.
- Subjects
MAGNESIUM hydride ,ENERGY storage ,HYDROGEN as fuel ,HYDROGEN storage ,HYDRIDES ,HYDROGEN content of metals ,HEAT transfer fluids - Abstract
Metal hydrides (MH) are known as one of the most suitable material groups for hydrogen energy storage because of their large hydrogen storage capacity, low operating pressure, and high safety. However, their slow hydrogen absorption kinetics significantly decreases storage performance. Faster heat removal from MH storage can play an essential role to enhance its hydrogen absorption rate, resulting in better storage performance. In this regard, the present study aims to improve heat transfer performance to positively impact the hydrogen absorption rate of MH storage systems. A novel semi-cylindrical coil is first designed and optimized for hydrogen storage and embedded as an internal heat exchanger with air as the heat transfer fluid (HTF). The effect of novel heat exchanger configurations is analyzed and compared with normal helical coil geometry, based on various pitch sizes. Furthermore, the operating parameters of MH storage and HTF are numerically investigated to obtain optimal values. ANSYS Fluent 2020 R2 is utilized for the numerical simulations. Results from this study demonstrate that MH storage performance is significantly improved by using a semi-cylindrical coil heat exchanger (SCHE). The hydrogen absorption duration reduces by 59% compared to a normal helical coil heat exchanger. The lowest coil pitch from SCHE leads to a 61% reduction of the absorption time. In terms of operating parameters for the MH storage with SCHE, all selected parameters provide a major improvement in the hydrogen absorption process, especially the inlet temperature of the HTF. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
47. Motion Planning for Reconfigurable Mobile Robots Using Hierarchical Fast Marching Trees
- Author
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Reid, W, Fitch, R, Göktoǧgan, AH, Sukkarieh, S, Reid, W, Fitch, R, Göktoǧgan, AH, and Sukkarieh, S
- Abstract
Reconfigurable mobile robots are versatile platforms that may safely traverse cluttered environments by morphing their physical geometry. However, planning paths for these robots is challenging due to their many degrees of freedom. We propose a novel hierarchical variant of the Fast Marching Tree (FMT*) algorithm. Our algorithm assumes a decomposition of the full state space into multiple sub-spaces, and begins by rapidly finding a set of paths through one such sub-space. This set of solutions is used to generate a biased sampling distribution, which is then explored to find a solution in the full state space. This technique provides a novel way to incorporate prior knowledge of sub-spaces to efficiently bias search within the existing FMT* framework. Importantly, probabilistic completeness and asymptotic optimality are preserved. Experimental results are provided for a reconfigurable wheel-on-leg platform that benchmark the algorithm against state-of-the-art samplingbased planners. In minimizing an energy objective that combines the mechanical work required for platform locomotion with that required for reconfiguration, the planner produces intuitive behaviors where the robot dynamically adjusts its footprint, varies its height, and clambers over obstacles using legged locomotion. These results illustrate the generality of the planner in exploiting the platform’s mechanical ability to fluidly transition between various physical geometric configurations, and wheeled/legged locomotion modes.
- Published
- 2020
48. Challenges of Survivorship for Older Adults Diagnosed with Cancer.
- Author
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Fitch, Margaret I., Nicoll, Irene, Newton, Lorelei, and Strohschein, Fay J.
- Abstract
Purpose of Review: The purpose of this brief review is to highlight significant recent developments in survivorship research and care of older adults following cancer treatment. The aim is to provide insight into care and support needs of older adults during cancer survivorship as well as directions for future research. Recent Findings: The numbers of older adult cancer survivors are increasing globally. Increased attention to the interaction between age-related and cancer-related concerns before, during, and after cancer treatment is needed to optimize outcomes and quality of life among older adult survivors. Issues of concern to older survivors, and ones associated with quality of life, include physical and cognitive functioning and emotional well-being. Maintaining activities of daily living, given limitations imposed by cancer treatment and other comorbidities, is of primary importance to older survivors. Evidence concerning the influence of income and rurality, experiences in care coordination and accessing services, and effectiveness of interventions remains scant for older adults during survivorship. Summary: There is a clear need for further research relating to tailored intervention and health care provider knowledge and education. Emerging issues, such as the use of medical assistance in dying, must be considered in this population. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
49. Exploring Associations Between Self-Compassion, Self-Criticism, Mental Health, and Quality of Life in Adults with Cystic Fibrosis: Informing Future Interventions.
- Author
-
Kauser, S., Keyte, R., Regan, A., Nash, E. F., Fitch, G., Mantzios, M., and Egan, H.
- Subjects
PERSONAL criticism ,CYSTIC fibrosis ,QUALITY of life ,MENTAL health ,PSYCHOTHERAPY ,EMOTIONAL state - Abstract
Self-compassion is increasingly recognised as an important and beneficial factor in quality of life and mental health-related research, but research within the adult cystic fibrosis (CF) population is scarce. In a cross-sectional study, 114 (56 female, 58 male) adults with CF completed and returned a series of validated questionnaires that assessed CF-related quality of life, negative emotional states (depression, anxiety and stress), self-compassion, and self-criticism. Quality of life and self-compassion were positively correlated, and each in turn were inversely correlated with negative emotional states and self-criticism. Negative emotional states correlated positively to self-criticism. Self-compassion and/or self-criticism moderated ten relationships between various sub-domains of quality of life and negative emotions. Psychological interventions that increase self-compassion may be beneficial for enhancing mental health and quality of life for adults with CF. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
50. Measuring the stability of fundamental constants with a network of clocks.
- Author
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Barontini, G., Blackburn, L., Boyer, V., Butuc-Mayer, F., Calmet, X., Crespo López-Urrutia, J. R., Curtis, E. A., Darquié, B., Dunningham, J., Fitch, N. J., Forgan, E. M., Georgiou, K., Gill, P., Godun, R. M., Goldwin, J., Guarrera, V., Harwood, A. C., Hill, I. R., Hendricks, R. J., and Jeong, M.
- Subjects
STABILITY constants ,DARK matter ,ATOMIC clocks ,MOLECULAR clock ,DARK energy ,STANDARD model (Nuclear physics) - Abstract
The detection of variations of fundamental constants of the Standard Model would provide us with compelling evidence of new physics, and could lift the veil on the nature of dark matter and dark energy. In this work, we discuss how a network of atomic and molecular clocks can be used to look for such variations with unprecedented sensitivity over a wide range of time scales. This is precisely the goal of the recently launched QSNET project: A network of clocks for measuring the stability of fundamental constants. QSNET will include state-of-the-art atomic clocks, but will also develop next-generation molecular and highly charged ion clocks with enhanced sensitivity to variations of fundamental constants. We describe the technological and scientific aims of QSNET and evaluate its expected performance. We show that in the range of parameters probed by QSNET, either we will discover new physics, or we will impose new constraints on violations of fundamental symmetries and a range of theories beyond the Standard Model, including dark matter and dark energy models. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
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