Publications by authors named "Greenway F"

The endocrine consequences of weight loss by bariatric surgery (BS) and caloric restriction are not fully understood but contribute to variable improvements in insulin sensitivity and cardiometabolic health. This study compared changes in insulin sensitivity and plasma concentrations of gut peptides 8 weeks and 1 year after BS and a low-calorie diet (LCD). Nineteen female patients with obesity self-selected BS (gastric bypass [n = 5] or sleeve gastrectomy [n = 7]) or LCD (n = 7) in this parallel-arm, prospective observational study.

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  • Subjects with obesity have shown the ability to survive prolonged fasting, suggesting that ketone bodies play a crucial metabolic role beyond just glucose use.
  • Early research on starvation revealed important insights into macronutrient metabolism and how the body adapts to ketosis, although prolonged fasting is no longer considered a treatment for obesity.
  • Intermittent fasting and approaches like time-restricted eating are less extreme alternatives that still offer metabolic benefits, but the exact mechanisms behind these changes are not yet fully understood.
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  • - The EXACT trial, sponsored by the National Cancer Institute, aims to evaluate whether 150 minutes of weekly moderate-intensity aerobic exercise can lower systemic inflammation in stage I-III colorectal cancer survivors compared to a control group over 12 weeks.
  • - Recruitment for the study involved inviting over 3,000 survivors, with 89 screened and 60 randomized, revealing that younger age, female sex, and certain racial and clinical factors positively influenced participation.
  • - Findings showed high exercise adherence at 92.2%, with all participants meeting the 80% adherence goal, and the trial will provide insights into how exercise may help prevent cancer recurrence and improve survival rates.
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Excess adiposity is at the root of type 2 diabetes (T2D). Glucagon-like peptide-1 receptor agonists (GLP-1RAs) have emerged as first-line treatments for T2D based on significant weight loss results. The composition of weight loss using most diets consists of <25% fat-free mass (FFM) loss, with the remainder from fat stores.

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Background: mHealth interventions use mobile and wireless technologies to deliver aspects of healthcare, and have been extensively employed in mental health research, showcasing their potential to address the significant treatment gap. While numerous studies underscore the advantages and functionalities of mHealth, challenges persist regarding patient uptake and sustained engagement among individuals with psychosis spectrum disorder. This review aims to explore individual-level barriers and facilitators to engagement with hybrid digital systems, which involves the integration of digital tools alongside in-person care.

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Purpose: Changes in autonomic (ANS) and enteric nervous systems (ENS) may be involved in pathogenesis of obesity. We hypothesized that baseline autonomic and enteric parameters may predict outcomes of diverse obesity therapies.

Material And Methods: We studied ANS and ENS physiology in 37 patients (8 male, 29 female, age 45 years, weight 129.

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The gut and brain communicate through bidirectional neural, endocrine, and immune signals to coordinate central nervous system activity with gastrointestinal function. Dysregulated inflammation can promote immune cell activation and increase entero-endocrine signaling and intestinal permeability; hence, a functional gut-brain axis is necessary for a healthy digestive system. The consumption of milk products can lead to gut discomfort via effects on gastrointestinal tract function and the inflammatory state, which, in turn, affect the brain.

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Objectives: The National Framework for Inclusion Health identified the need for collaborative action between the NHS and third sector health to improve access and outcomes for Inclusion Health groups. Clinical psychology trainee placements in homelessness settings could be a valuable pathway to improving access to psychological support for people experiencing homelessness and the provision of clinical services, which is key to developing the workforce and a catalyst for the future recruitment of clinical psychologists in the third sector.

Methods: A qualitative evaluation was conducted using semistructured interviews to explore the perspectives of clinical psychology trainees, supervisors, staff in homelessness settings and a peer mentor.

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Previously, we showed that a normo-baric 100 % oxygen treatment (NbOxTr) enhances motor learning processes, e.g., visuomotor adaptation (VMA) and sequence learning (SL).

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To harmonise computed tomography (CT) and dual-energy x-ray absorptiometry (DXA) body composition measurements allowing easy conversion in longitudinal assessments and across cohorts to assess cardiometabolic risk and disease. Retrospective cross-sectional observational study from 1996 to 2008 included participants in the Pennington Center Longitudinal Study (PCLS) (N = 1967; 571 African American/1396 White). Anthropometrics, whole-body DXA and abdominal CT images were obtained.

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Women experiencing homelessness are marginalized not only through their housing status but also through their access and ability to manage their menstrual health. Currently, there are no existing published reviews exploring this topic. This study aimed to begin closing that gap, by systematically reviewing the literature examining women's experiences of menstruation whilst being homeless.

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Weight loss (WL) differences between isocaloric high-carbohydrate and high-fat diets are generally small; however, individual WL varies within diet groups. Genotype patterns may modify diet effects, with carbohydrate-responsive genotypes losing more weight on high-carbohydrate diets (and vice versa for fat-responsive genotypes). We investigated whether 12-week WL (kg, primary outcome) differs between genotype-concordant and genotype-discordant diets.

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Motor learning processes are crucial for our everyday life, and improving skills by tailored interventions is of great clinical interest and value. Our previous work revealed a positive effect of normo-baric oxygen treatment on visuomotor adaptation. Here, we investigate whether it could positively affect sequence learning (SL) processes as well.

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  • Insulin is released in rhythmic pulses from pancreatic beta-cells to regulate blood glucose levels, but in type 2 diabetes, this process becomes irregular, especially in certain populations such as American Indians and Native Alaskans who show decreased beta-cell function and higher diabetes rates.
  • A study reviewed metabolic outcomes in 10 Native Americans after six months of intravenous hormone therapy, reporting significant reductions in markers like hemoglobin A1C and fasting glucose levels.
  • The findings suggest that physiologic hormone administration could potentially improve metabolic syndrome metrics, indicating a need for further research through randomized controlled trials.
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We followed two patients with diabetic retinopathy over the course of their treatment with physiologic Insulin resensitization. Both patients showed improvement of their diabetic retinopathy, after treatment.

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Introduction: Human motor learning processes are a fundamental part of our daily lives and can be adversely affected by neurologic conditions. Motor learning largely depends on successfully integrating cognitive and motor-related sensory information, and a simple, easily accessible treatment that could enhance such processes would be exciting and clinically impactful. Normobaric 100% oxygen treatment (NbOxTr) is often used as a first-line intervention to improve survival rates of brain cells in neurological trauma, and recent work indicates that improvements in elements crucial for cognitive-motor-related functions can occur during NbOxTr.

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Physiologic insulin secretion consists of an oscillating pattern of secretion followed by distinct trough periods that stimulate ligand and receptor activation. Apart from the large postprandial bolus release of insulin, β cells also secrete small amounts of insulin every 4-8 min independent of a meal. Insulin resistance is associated with a disruption in the normal cyclical pattern of insulin secretion.

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  • SARS-CoV-2 infection can lead to long-term health issues known as post-acute sequelae of SARS-CoV-2 infection (PASC) or long COVID, which can manifest as ongoing or new symptoms after the initial infection.
  • The RECOVER-Adult study aims to better understand PASC by investigating its prevalence, symptoms, risk factors, and underlying biological mechanisms through a large cohort of nearly 15,000 adults.
  • Participants will provide ongoing data through questionnaires, physical examinations, and biological samples over several months, helping researchers gather critical insights into the complexities of long COVID.
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Importance: SARS-CoV-2 infection is associated with persistent, relapsing, or new symptoms or other health effects occurring after acute infection, termed postacute sequelae of SARS-CoV-2 infection (PASC), also known as long COVID. Characterizing PASC requires analysis of prospectively and uniformly collected data from diverse uninfected and infected individuals.

Objective: To develop a definition of PASC using self-reported symptoms and describe PASC frequencies across cohorts, vaccination status, and number of infections.

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Introduction: Naringenin, a peroxisome proliferator-activated receptor (PPAR) activator found in citrus fruits, upregulates markers of thermogenesis and insulin sensitivity in human adipose tissue. Our pharmacokinetics clinical trial demonstrated that naringenin is safe and bioavailable, and our case report showed that naringenin causes weight loss and improves insulin sensitivity. PPARs form heterodimers with retinoic-X-receptors (RXRs) at promoter elements of target genes.

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Aim: To investigate the effects of an orlistat mouth rinse on the intake of a high-fat meal.

Methods: A double-blind, balanced order, crossover study was conducted in participants (n = 10, body mass index 25-30 kg/m ) assigned to receive placebo or orlistat (24 mg/mL) prior to a high-fat meal. Participants were divided into low- or high-fat consumers based on calories consumed from fat following placebo administration.

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Soybean products have nutrients, dietary fiber, and phytoalexins beneficial for cardiovascular and overall health. Despite their high consumption in Asian populations, their safety in Western diets is debated. We conducted a dose-escalating clinical trial of the safety and tolerability of soybean products in eight older adults (70-85 years) with obesity.

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Background: The objective was to test the efficacy of a scalable, virtually delivered, diabetes-tailored weight management program on glycemic control in adults with type 2 diabetes (T2D).

Methods: This was a single arm, three-site clinical trial. Participants had baseline HbA1c between 7-11% and BMI between 27-50 kg/m.

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Physical performance decrements observed during multi-stressor military operations may be attributed, in part, to cellular membrane dysfunction, which is quantifiable using phase angle (PhA) derived from bioelectrical impedance analysis (BIA). Positive relationships between PhA and performance have been previously reported in cross-sectional studies and following longitudinal exercise training programs, but whether changes in PhA are indicative of acute decrements in performance during military operations is unknown. Data from the Optimizing Performance for Soldiers II study, a clinical trial examining the effects of exogenous testosterone administration on body composition and performance during military stress, was used to evaluate changes in PhA and their associations with physical performance.

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