Abstract
Serum leptin levels are increased in obesity in proportion to the amount of body fat. Gender and fat distribution into subcutanous or visceral adipose tissue depots contribute to greater serum leptin in women than men of equivalent fat mass. Serum leptin circulates in the plasma in association with a binding protein comprised of the extracellular domain of the leptin receptor. The postprandial surge in insulin and glucose stimulate leptin synthesis and a diurnal pattern in serum leptin. Hexosamine biosynthesis and adipocyte size contribute to greater leptin synthesis in adipocytes of obese subjects. Leptin resistance describes the inability of leptin to reduce food intake and decrease body weight in obese subjects with elevated leptin levels. Selective leptin resistance results in some systems remaining responsive to the elevated leptin in obesity. Selective leptin resistance contributes to obesity related hypertension and may contribute to other metabolic complications in obesity.
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Bell, L.N., Considine, R.V. (2006). Leptin and Obesity. In: Castracane, V.D., Henson, M.C. (eds) Leptin. Endocrine Updates, vol 25. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-31416-7_3
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