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The onset of obesity is characterized by early physiological and molecular changes, including leptin resistance and hypothalamic dysfunction, preceding significant weight gain and metabolic complications. Extracellular vesicles (EVs) are key mediators of intercellular communication, reflecting early pathological shifts in metabolic disorders. This study investigates the role of hypothalamic EVs (hEVs) in early obesogenic insult and their potential implications for obesity-related comorbidities. Using a hamster model fed a high fat diet for 30 days, next-generation proteomics revealed altered hEV protein compositions linked to cellular metabolism, neuroinflammation, and metabolic dysfunction, mirroring early obesity-related dysfunction. These findings highlight the adaptive molecular profiles of hEVs during early obesogenic insult and their potential as biomarkers and molecular mediators in obesity progression and its comorbidities. In conclusion, this study provides new insights into the molecular mechanisms underlying the onset of obesity and highlights hEVs as promising targets for early detection and intervention.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC12163634 | PMC |
http://dx.doi.org/10.1021/acsomega.5c02274 | DOI Listing |
Curr Atheroscler Rep
September 2025
Division of Gastroenterology and Hepatology, Lynda K. and David M. Underwood Center for Digestive Health, Houston Methodist Hospital, Houston, TX, USA.
Purpose Of Review: This review aims to characterize the known cardiovascular (CV) manifestations associated with inflammatory bowel disease (IBD) and the underlying mechanisms driving these associations.
Recent Findings: Gut dysbiosis, a hallmark of patients with IBD, can result in both local and systemic inflammation, thereby potentially increasing the risk of cardiovascular disease (CVD) in the IBD population. Micronutrient deficiencies, anemia, and sarcopenia independently increase the risk of CVD and are frequent comorbidities of patients with IBD.
Eur J Case Rep Intern Med
August 2025
Department of Internal Medicine, Local Health Unit of São João, Porto, Portugal.
Unlabelled: Bariatric surgery has emerged as a highly effective treatment option for individuals with obesity. Severe hypoalbuminaemia is a feared complication after a Roux-en-Y gastric bypass. It is characterised by a low serum albumin level of <25 g/l, neither explained by renal losses, protein-losing enteropathy nor by liver disfunction, and is associated with high morbidity and mortality.
View Article and Find Full Text PDFVasc Health Risk Manag
September 2025
Department of Functional Diagnostics and Physical Medicine, Pomeranian Medical University in Szczecin, Szczecin, 71-210, Poland.
The vascular endothelium is responsible for regulating vascular tone, maintaining fluid homeo-stasis, and preventing platelet aggregation, exhibits regulatory properties in vasorelaxation and vasoconstriction - it produces, among others, nitric oxide and endothelin. The imbalance of vasoactive molecules leads to the loss of their function, known as endothelial dysfunction. Impaired endothelial function is observed in people with metabolic disorders, often preceding the onset of the disease by several years.
View Article and Find Full Text PDFPhysiol Behav
September 2025
Department of Psychiatry, Icahn School of Medicine at Mount Sinai, 1399 Park Avenue, New York, NY, 10029, United States. Electronic address:
Sleeve gastrectomy (SG) and Roux-en-Y gastric bypass (RYGB) are the most effective weight loss procedures for severe obesity. However, there is recent evidence of increased alcohol intake and new onset alcohol use disorder (AUD) by 2 yr following both operations. Although the two surgeries differ anatomically, they lead to similar increased drinking.
View Article and Find Full Text PDFEur J Heart Fail
September 2025
Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital Dallas, Dallas, TX, USA.
Aims: Obesity is commonly hypothesized to lead to the development of heart failure (HF) in part due to increases in blood volume (BV) and left ventricular (LV) remodelling. Whether adiposity and obesity severity are associated with BV expansion and subsequent LV remodelling in middle-aged individuals at increased risk (IR) prior to the onset of HF is unknown.
Methods And Results: We analysed data from 96 middle-aged (40-64 years) non-obese (25.