Washington University School of Medicine
The goals of this research study are to: 1) understand why some people with obesity are protected from developing conditions such as type 2 diabetes and cardiovascular disease while others are more likely to develop obesity-related conditions; 2) assess the effect of small extracellular vesicles (sEVs also called exosomes), obtained from human participants, on metabolic function in cultured cells and in mice.
Insulin resistance is commonly associated with obesity and is a major contributor to the development of obesity-related metabolic diseases, including nonalcoholic fatty liver disease, the metabolic syndrome, and type 2 diabetes (T2D). Most persons with obesity are "metabolically unhealthy" (MUO), often defined by having insulin resistance and the metabolic syndrome. However, a subset of people with obesity are metabolically healthy (MHO) and protected from the adverse metabolic effects of excess adiposity. The mechanisms that determine the differences in metabolic health between people with MU…
Inclusion Criteria: * Metabolically healthy lean subjects must have a BMI ≥18.5 and ≤24.9 kg/m²; Subjects with obesity must have a BMI ≥30.0 and ≤50.0 kg/m² * Metabolically healthy lean and people with metabolically healthy obesity must have intrahepatic triglyceride (IHTG) content ≤5%; fasting plasma glucose concentration \<100 mg/dl, 2-hr oral glucose tolerance plasma glucose concentration \<140 mg/dl, hemoglobin A 1C (HbA1c) ≤5.6% and HOMA-IR \<2.5. * People with metabolically unhealthy obesity must have intrahepatic triglyceride (IHTG) content ≥5.6%; HOMA-IR ≥2.5, and HbA1c 5.7%-6.4%, or…
Consumption of a low-calorie diet with caloric intake reduced by \~25% to achieve \~10% weight loss in about 4 to 5 months.
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