Publications by authors named "Arnold E"

Sexual and gender minority youth (SGMY) are vulnerable to acquiring HIV and need HIV prevention and health services, but may have competing needs. A prior analysis found that PrEP use reports increased in a combination intervention study arm with coaching, peer support, and automated text-messages. This paper examines ancillary support and healthcare services utilization as secondary intervention objectives.

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Background: To build research capacity for early-career faculty conducting HIV/STI research with minoritized communities and to enhance diversity in the scientific workforce, the University of California, San Francisco (UCSF) Center for AIDS Prevention (CAPS) conducts a training program for visiting professors (VPs), begun in 1996. VPs are in residence at CAPS for three summers, complete a pilot research project, and prepare National Institutes of Health (NIH) grant proposals. Best practices and key elements for successfully training scholars of color, and others who work with minoritized communities, are identified.

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Reactive oxygen species (ROS) are physiological byproducts of neuronal metabolism. However, an imbalance between ROS generation and antioxidant capacity, often driven by dysregulated pro-oxidant enzymes like nicotinamide adenine dinucleotide phosphate oxidases (NOX), can result in deleterious oxidative stress. This oxidative stress is a critical factor in the pathogenesis of neurodegenerative diseases.

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The COVID-19 pandemic is caused by SARS-CoV-2, a highly transmissible and pathogenic RNA betacoronavirus. Like other RNA viruses, SARS-CoV-2 continues to evolve with or without drug selection pressure, and many variants have emerged since the beginning of the pandemic. The papain-like protease, PL, is a cysteine protease that cleaves viral polyproteins as well as ubiquitin and ISG15 modifications from host proteins.

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Background: Community health workers (CHWs) can support patient engagement in care for a variety of health conditions, including HIV. This paper reports on the experiences of HIV clinics and health departments that integrated CHWs into their health systems as part of a capacity-building initiative to address HIV-related disparities in the United States.

Methods: Semi-structured interviews were conducted with key informants (n = 14) in two Ryan White HIV/AIDS program jurisdictions: Mississippi (jurisdiction covers the entire state) and the city of New Orleans, Louisiana.

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Article Synopsis
  • - T cell immune dysfunction is a significant issue in chronic HIV infection, and evaluating this dysfunction requires a method that involves both general and specific activation of T cells.
  • - Researchers developed a tunable artificial antigen-presenting cell (aAPC) system using silica microbeads, which showed that adding CD28 co-stimulation to anti-CD3 enhances T cell activation and cytokine production, especially IL-2.
  • - CD4 and CD8 T cells from untreated HIV patients displayed altered immune responses with a reduced dependence on CD28, and while antiretroviral therapy helps restore some functions in CD4 T cells, CD8 T cells remain impaired, suggesting persistent dysfunction linked to HIV.
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Within host environments, iron availability is limited, which instigates competition for this essential trace element. In response, bacteria produce siderophores, secondary metabolites that scavenge iron and deliver it to bacterial cells via specific receptors. This role in iron acquisition contributes significantly to bacterial pathogenesis, thereby designating siderophores as virulence factors.

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  • The study focuses on the mental health and substance use patterns among youth facing various life challenges, including those from marginalized groups and low socioeconomic backgrounds.
  • Researchers followed 1,728 participants from Los Angeles and New Orleans over 8 months to analyze how trauma relates to depression and substance use.
  • Results show that higher trauma levels are linked to increased depressive symptoms and substance use, indicating the need for targeted interventions focusing on trauma for these vulnerable youth.
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Introduction: Supporting students during the transition to medical school is crucial for their academic adjustment. However, there has been limited research on the protective role of community and family support during this transition, despite evidence of the benefits of supportive relationships in higher education. Guided by self-determination theory, the current cross-sectional study explored how changes in family and community relationships impact Cuban medical students' sense of belonging in their field and their grade expectations.

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  • The study looked at how social support can help reduce procrastination, especially in people who struggle with uncertainty.
  • It involved 394 college students who reported on their personality traits, procrastination levels, and the social support they received from family and friends.
  • The results showed that strong family support can lessen procrastination risks for those with high intolerance of uncertainty.
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Physical activity or structured exercise is beneficial in a wide range of circumstances. Nevertheless, individual-level data on differential responses to various types of activity are not yet sufficient in scale, duration or level of annotation to understand the mechanisms of discrete outcomes nor to support personalized recommendations. The Apple Heart & Movement Study was designed to passively collect the dense physiologic data accessible on Apple Watch and iPhone from a large real-world cohort distributed across the US in order to address these knowledge gaps.

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Due to the importance of post-translational modification (PTM) in cellular function, viruses have evolved to both take advantage of and be susceptible to such modification. Adenovirus encodes a multifunctional protein called protein VII, which is packaged with the viral genome in the core of virions and disrupts host chromatin during infection. Protein VII has several PTMs whose addition contributes to the subnuclear localization of protein VII.

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Ethical issues arise frequently in the treatment of substance use disorders (SUD). Counselors need guidance to navigate ethical dilemmas but receive limited training in resolving ethical issues. To narrow the gap between the ethical dilemmas counselors face and their training, this qualitative study assessed ethical issues that counselors encounter, how they resolve them, and desired training.

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Purpose Of Review: The central tenet of syndemics theory is that disease interactions are driven by social factors, and that these factors have to be understood in order to reduce the health burdens of local populations. Without an understanding of the theory and how it is being put into practice, there is a strong possibility of losing the potential for syndemic theory to positively impact change at community and individual level.

Methods: Following an initial database search that produced 921 articles, we developed a multi-stage scoping review process identifying invention studies that employ syndemic theory.

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Objectives: Mothers of young children are at-risk for low physical activity. Organised team sport provides additional social and mental health benefits above that of physical activity. To better understand engagement in team sport, this study aimed to apply the theory of planned behaviour, with the addition of maternal identity and social support.

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A modular, enantioselective approach to access the bioactive 7,9-dihydroxy- and 9-hydroxy-7-keto-8,4'-oxyneolignans is disclosed, which employs stereoselective Mitsunobu reactions of enantiopure 2-aryl-1,3-dioxan-5-ols and functionalized phenols. The enantiopure dioxanols are prepared through Sharpless asymmetric dihydroxylation of protected coniferyl or sinapyl alcohols and subsequent benzylidene acetal formation. Through a mix-and-match coupling approach, six of the eight possible -7,9-dihydroxy-8,4'-oxyneolignan enantiomeric natural products (bearing a C-1' hydroxypropyl chain) were generated following sequential deprotection.

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Article Synopsis
  • Acute lymphoblastic leukemia (γδ T-ALL) is a rare and complex condition in children, prompting a study of 200 pediatric cases to identify its clinical and genetic characteristics.
  • The research revealed that very young children (under 3 years) with γδ T-ALL face a significantly high risk and display specific genetic changes, particularly involving STAG2 inactivation and LMO2 activation.
  • Importantly, their findings suggest that targeting DNA repair pathways linked to STAG2 inactivation with specific drugs could offer new treatment options and help classify patients based on their risk levels.
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Viral invasion of the host cell causes some of the most dramatic changes in biology. Human cytomegalovirus (HCMV) extensively remodels host cells, altering nuclear shape and generating a cytoplasmic viral-induced assembly compartment (vIAC). How these striking morphology changes take place in the context of host gene regulation is still emerging.

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Background: Young men who have sex with men and transgender women (YMSM/TGW) have disproportionately high HIV incidence and lower preexposure prophylaxis (PrEP) adherence. Point-of-care (POC) urine tenofovir (TFV) rapid assay (UTRA) testing permits real-time monitoring for nonadherence within clinical settings. We performed UTRA testing among PrEP users to examine the relationship between low PrEP adherence and future PrEP discontinuation, and the accuracy of POC testing compared to gold-standard liquid chromatography tandem mass spectrometry (LC/MS/MS).

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Objective: Rheumatoid arthritis can be classified according to ACPA and RF status. ACPA status may be associated with other pathophysiological differences, e.g.

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Purpose: This study explores the relationship between depression and cardiovascular disease (CVD) in the US adult population, focusing on sex differences.

Design: Cross-sectional study.

Setting: National Health and Nutrition Examination Survey data (2013-2018).

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