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- W1980622174 abstract "Abstract. Whether leptin levels are related to insulin sensitivity or subject to acute regulation by insulin is not known. In 12 obese [body mass index (BMI) = 34.0 ±1.5 kg m-2] and 12 lean (BMI = 22.2 ±0.6 kg m-2) non-diabetic subjects, plasma leptin concentrations were measured in the fasting state and during 2 hours of euglycaemic hyperinsulinaemia (˜600 pmol L-2). Fasting plasma leptin was significantly higher in obese (26.6 ±3.2) than in lean subjects (6.4 ±1.2 ng mL-1, P= 0.0001), and in women (21.1 ±3.3) than in men (7.3 = 2.3 ng mL-1, P= 0.01). In univariate analysis, fasting plasma leptin was strongly related to all anthropometric measures (body weight, fat mass, percent fat mass, waist and hip circumferences). In multiple regression, per cent adiposity, hip circumference and duration of obesity explained 90% of the variability in fasting leptin concentrations. Fasting and stimulated (OGTT) insulin levels, insulin sensitivity (22.6 ±1.9 vs 36.7 ±2.0 μmol min-1 kg-1 in lean and obese subjects, respectively, P < 0.0001), glucose area, and serum triglycerides were positively related to fasting plasma leptin concentrations; none of these associations, however, was statistically significant after adjusting for BMI. During the clamp, plasma leptin concentrations remained constant in both lean and obese subjects. We conclude that neither insulin levels nor sensitivity relate to leptin levels independently of fat mass, and that leptin is not subject to acute (2 hours) regulation by insulin in lean or obese humans." @default.
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- W1980622174 date "1996-10-01" @default.
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- W1980622174 title "Acute insulin administration does not affect plasma leptin levels in lean or obese subjects" @default.
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- W1980622174 doi "https://doi.org/10.1111/j.1365-2362.1996.tb02142.x" @default.
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