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- W2011481454 abstract "Premature adrenarche (PA) is characterized by an earlier than normal increase in adrenocortical androgen production, and it is associated with increased serum IGF-I concentrations. Both the GH-IGF system and androgens, particularly testosterone, are known to enhance erythropoiesis.Our objective was to test the hypothesis that blood erythrocyte count and blood hemoglobin (B-Hb) concentration are increased in PA.Sixty-four prepubertal children (10 boys) with clinically and biochemically defined PA and 62 healthy prepubertal controls (10 boys) participating in our Premature Adrenarche study were examined, and a fasting blood sample was drawn at a university hospital.We evaluated B-Hb and erythrocyte, thrombocyte, and leukocyte counts and their association with serum dehydroepiandrosterone sulfate (DHEAS), testosterone and IGF-I concentrations.Children with PA had higher mean blood erythrocyte count (4.74 vs. 4.64 × 10(12)/liter, P = 0.04; significant difference in girls but not in boys) and a tendency toward higher B-Hb (130 vs. 128 g/liter, P = 0.06) than their controls. No difference was observed in leukocyte or thrombocyte counts between the study groups. In linear regression models including age, sex, body mass index SD score, IGF-I, and DHEAS or testosterone, B-Hb was associated with serum DHEAS (P = 0.04), testosterone (P = 0.01), and IGF-I (P ≤ 0.003) concentrations in the entire study cohort and with IGF-I separately in girls (P ≤ 0.02). Similar models showed a significant association of blood erythrocyte count with serum IGF-I concentration (P = 0.003-0.049) but not with DHEAS or testosterone.Increased erythrocyte count in PA girls suggests that relatively small increases in serum androgen or IGF-I concentrations during adrenarche may associate with enhanced erythropoiesis." @default.
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- W2011481454 date "2013-01-01" @default.
- W2011481454 modified "2023-09-25" @default.
- W2011481454 title "Blood Erythrocyte and Hemoglobin Concentrations in Premature Adrenarche" @default.
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- W2011481454 doi "https://doi.org/10.1210/jc.2012-2783" @default.
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