Abstract
The study objective was to determine circulating levels of the appetite-controlling neuropeptides, neuropeptide Y (NPY), galanin, and leptin, in subjects with eating disorders. The study group consisted of 48 obese women aged 19 to 45 years, 15 women with anorexia nervosa aged 18 to 23 years, and 19 lean healthy women aged 18 to 42 years (control group). The obese women were divided into four groups: (A) body mass index (BMI) = 25 to 30 kg/m2, n = 9 (overweight); (B) BMI = 31 to 40 kg/m2, n = 23 (moderate obesity); (C) BMI greater than 40 kg/m2, n = 9 (severe obesity); and (D) BMI = 31 to 40 kg/m2, n = 7 (moderate obesity + non-insulin-dependent diabetes mellitus [NIDDM]). Plasma NPY, galanin, and leptin concentrations were measured in peripheral blood samples with radioimmunoassay methods. Plasma NPY levels in obese women (groups A, B, C, and D) were significantly higher as compared with the control group (P < .01, P < .001, P < .001, and P < .001, respectively). The highest plasma NPY concentrations were observed in obese women with NIDDM. Plasma galanin levels were significantly higher in groups B, C, and D (P < .001, P < .001, and P < .001, respectively). Plasma leptin concentrations were significantly higher in groups C an...Continue Reading
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