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• W2076256003 abstract "Ghrelin, an endogenous ligand of the GH secretagogue receptor, stimulates appetite and causes obesity in animal models and in humans when given in pharmacologic doses. Prader-Willi Syndrome (PWS) is a genetic obesity syndrome characterized by GH deficiency and the onset of a voracious appetite and obesity in childhood. We, therefore, hypothesized that ghrelin levels may play a role in the expression of obesity in this syndrome. We measured fasting serum ghrelin levels in 13 PWS children with an average age of 9.5 yr (range, 5-15) and body mass index (BMI) of 31.3 kg/m2 (range, 22-46). The PWS group was compared with 4 control groups: 20 normal weight controls matched for age and sex, 17 obese children (OC), and 14 children with melanocortin-4 receptor mutations (MC4) matched for age, sex, and BMI, and a group of 3 children with leptin deficiency (OB). In non-PWS subjects, ghrelin levels were inversely correlated with age (r = 0.36, P = 0.007), insulin (r = 0.55, P < 0.001), and BMI (r = 0.62, P < 0.001), but not leptin. In children with PWS, fasting ghrelin concentrations were not significantly different compared with normal weight controls (mean +/- SD; 429 +/- 374 vs. 270 +/- 102 pmol/liter; P = 0.14). However, children with PWS did demonstrate higher fasting ghrelin concentrations (3- to 4-fold elevation) compared with all obese groups (OC, MC4, OB) (mean +/- SD; 429 +/- 374 vs. 139 +/- 70 pmol/liter; P < 0.001). In conclusion, ghrelin levels in children with PWS are significantly elevated (3- to 4-fold) compared with BMI-matched obese controls (OC, MC4, OB). Elevation of serum ghrelin levels to the degree documented in this study may play a role as an orexigenic factor driving the insatiable appetite and obesity found in PWS." @default.
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• W2076256003 date "2003-01-01" @default.
• W2076256003 modified "2023-10-10" @default.
• W2076256003 title "Serum Ghrelin Levels Are Inversely Correlated with Body Mass Index, Age, and Insulin Concentrations in Normal Children and Are Markedly Increased in Prader-Willi Syndrome" @default.
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• W2076256003 doi "https://doi.org/10.1210/jc.2002-021052" @default.
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