Publications by authors named "Edward Weiss"

Background: Targeted screening programs for patients at high risk for anal squamous-cell carcinoma have been proposed; however, the evidence in support of screening remains unclear.

Objective: This study aimed to determine whether screening high-risk patients (predominantly those living with HIV) detected squamous-cell carcinoma at an earlier stage compared to the routine practice of not screening.

Design: This is a cohort study.

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  • Long-distance thru-hiking, like the Pacific Crest Trail, places significant physical demands on hikers, exemplified by a 55-year-old man who hiked 3767 km in 128 days.
  • Despite a daily energy expenditure of 5702 kcal, his energy intake was only 4141 kcal, leading to a 9% decrease in body mass and low energy availability, which raises concerns about relative energy deficiency in sport (RED-S) syndrome.
  • Post-hike evaluations showed negative impacts like decreased bone mineral density and increased cholesterol levels, but most health markers returned to baseline within 8 months; recommendations include optimizing energy intake and adjusting hiking distances to mitigate RED-S risk.
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  • Huperzine A, often added to pre-workout supplements, has shown potential for improving cognitive function in some populations, but its effects on exercise-trained individuals are not well researched.
  • A study involving 15 exercise-trained participants tested the impact of acute huperzine A ingestion on cognitive and exercise performance, revealing no significant differences in cognitive function or exercise performance between those who took huperzine A and those who received a placebo.
  • The results suggest that huperzine A does not enhance cognitive function during exercise, raising questions about its value in pre-workout supplements.
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Although antiretroviral treatment (ART) suppresses HIV RNA in blood and prevents transmission, low-level anorectal HIV RNA shedding persists in some ART-treated men who have sex with men. We collected anorectal biopsies and swabs from 55 men who have sex with men on effective ART, hypothesizing that anorectal shedding would be linked to microbiota-driven mucosal T cell activation. Lymphocytes were assessed by flow cytometry, soluble immune factors by multiplex immunoassay, neutrophils and epithelial integrity by immunofluorescence microscopy, and the anorectal microbiome by quantitative PCR and 16S rRNA gene sequencing.

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Background: Cognitive functioning refers to storage and manipulation of information and includes executive functioning (EF) and attention (ATT). While physical activity (PA) improves cognitive functioning, decrements are associated with frequent substance use. This study examined PA on cognitive functioning within the context of past-year substance use.

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The purpose of this study was to evaluate the hypothesis that a novel high-repetition, low-resistance back squat training protocol, designed to stimulate high-intensity interval training, improves 5-km run performance. Fifteen runners [4 male, 11 female; 150 + minutes of endurance exercise/week; age = 22.7 ± 2.

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Objectives: Anal human papillomavirus (HPV) infection is highly prevalent among men who have sex with men (MSM). HPV-associated anal dysplasia has been linked with anal HIV RNA shedding despite antiretroviral therapy (ART). Since mucosal HIV levels are a key determinant of sexual transmission of the virus, this would have important public health implications.

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Healthful dietary patterns have constituents that are known to improve exercise performance, such as antioxidants, nitrates, and alkalizing effects. However, ergogenic effects of such diets have not been evaluated. We hypothesized that a short-term Mediterranean diet results in better exercise performance, as compared to a typical Western diet.

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John O. Holloszy, as perhaps the world's preeminent exercise biochemist/physiologist, published >400 papers over his 50+ year career, and they have been cited >41,000 times. In 1965 Holloszy showed for the first time that exercise training in rodents resulted in a doubling of skeletal muscle mitochondria, ushering in a very active era of skeletal muscle plasticity research.

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  • The study evaluates the effects of dehydroepiandrosterone (DHEA) therapy on bone mineral density (BMD) and body composition in older adults, specifically focusing on gender differences among participants from four clinical trials.
  • Results show that women taking DHEA experienced significant increases in various hormones and BMD, while men saw hormonal increases but no BMD benefits and a slight decrease in fat mass.
  • The findings suggest DHEA may help women maintain bone and muscle mass as they age; however, further research is needed to determine the long-term effects and compare its risk profile to estrogen therapy.
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  • - A study examined how low-carbohydrate, ketogenic diets affect anaerobic exercise performance compared to high-carbohydrate diets, observing 16 participants over a period of four days on each diet.
  • - Results showed that the low-carb diet led to lower urine pH and increased ketones, which correlated with a 7% decrease in peak power and a 15% decrease in total distance run during anaerobic exercise tests.
  • - The findings suggest that short-term ketogenic diets may impair performance in high-intensity, short-duration activities, which is significant for athletes focusing on these types of exercises.
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Objective: Identify determinants of plasma adropin concentrations, a secreted peptide translated from the Energy Homeostasis Associated (ENHO) gene linked to metabolic control and vascular function.

Methods: Associations between plasma adropin concentrations, demographics (sex, age, BMI) and circulating biomarkers of lipid and glucose metabolism were assessed in plasma obtained after an overnight fast in humans. The regulation of adropin expression was then assessed in silico, in cultured human cells, and in animal models.

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Current evidence has shown that exercise can reduce symptoms of Parkinson's disease (PD). However, previous studies indicated mixed results, possibly because of variability in terms of the nature of the exercise interventions. The purpose of this study was to perform a metaanalysis of current evidence from endurance exercise intervention studies for effects on the United Parkinson's Disease Rating Scale (UPDRS) in individuals with PD.

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: Dairy foods are complex mixtures which include nutrients and non-nutrient substances that could potentially influence cancer etiology, including breast cancer. The purpose of this study was to examine associations between the types and quantity of dairy foods consumed and the risk of breast cancer among women participating in the Roswell Park Cancer Institute Data Bank and BioRepository (DBBR) between 2003 and 2014. Archived clinical and questionnaire data were obtained from the DBBR from 1941 women diagnosed with breast cancer between December 2003 and October 2014, and 1237 control participants.

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Substance use disorders (SUDs) are maladaptive patterns of substance use that are associated with psychiatric comorbidity, unhealthy lifestyle choices, and high rates of relapse. Exercise is associated with a wide range of acute and long-term benefits for both mental and physical health and is presently being investigated as a promising adjunctive treatment for SUD. Despite positive effects of regular physical activity on treatment outcomes and risk factors for relapse, low adherence and high attrition rates limit the benefits derived from exercise interventions.

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