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Horm Res. 1998;50(6):297-302.

Serum leptin levels in young females with insulin-dependent diabetes and the relationship to hyperandrogenicity and microalbuminuria.

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Department of Woman and Child Health Paediatric Unit, Karolinska Institute, Stockholm, Sweden.


To investigate the relationship between leptin levels and IDDM with and without microalbuminuria, fasting serum levels of leptin, insulin, insulin-like growth factor-1 (IGF-1), sex hormone-binding globulin (SHBG), testosterone (SHBG) ratio, blood pressure and body mass index (BMI) were measured in 18 normo- and 11 microalbuminuric females with >5 years of IDDM, and 24 healthy controls in late puberty. Leptin levels were higher in micro- than normoalbuminuric IDDM patients, and lower in healthy controls than in both IDDM groups (p < 0.05, respectively). In multiple regression analysis, presence of IDDM and BMI independently contributed to increased leptin values (R2 = 0.34, p < 0.001). Including IDDM females only, solely low IGF-1 and high testosterone/SHBG were associated with leptin (R2 = 0.39, p = 0.009). Albumin excretion rate (AER) was correlated to leptin (r = 0.48, p = 0.01). With AER as the dependent variable only serum leptin and diastolic blood pressure added to the regression (R2 = 0.59, p < 0.001). In conclusion, serum leptin, independently of BMI, is: (1) increased in IDDM females of late puberty; (2) associated with low IGF-1 and hyperandrogenemia, and (3) related to increased albumin excretion rate in IDDM females.

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