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- W2137127637 abstract "To compare the time-course of breast milk leptin levels between term and preterm pregnancy.Open longitudinal prospective randomised study.RIA of leptin levels in milk from 33 mothers (term pregnancy: n=24; preterm: n=9) at three postpartum intervals: 2-3 days, 4-5 days and 6 weeks (intervals A, B and C), combined with serum in 23 mothers (term: n=17; preterm: n=6) in interval A. Milk samples were sonicated before incubation.Interval A leptin levels were approximately tenfold higher in serum than in milk (term: 13.24+/-2.48 vs 1.34+/-0.14 ng/ml, P<0.0001; preterm: 4.46+/-1.05 vs 0.63+/-0.18 ng/ml, P<0.0005), and higher in term than in preterm serum (P=0.03). Milk levels were higher in the term vs preterm group in intervals A (P<0.01) and B (P<0.05). In the term group they declined significantly from interval A to interval B (P<0.05) but did not vary significantly in the preterm group. Serum levels correlated with maternal body mass index; milk levels showed only moderate correlation with maternal and infant weight or body mass index.The reasons for the presence and differential longitudinal expression of leptin in human milk after term and preterm pregnancy remain unknown. A hypothesis, requiring further study, is that persistently lower leptin levels in preterm milk act as a compensatory release of a brake on neonatal growth." @default.
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- W2137127637 date "2004-08-01" @default.
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- W2137127637 title "Time-course of leptin levels in term and preterm human milk" @default.
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- W2137127637 doi "https://doi.org/10.1530/eje.0.1510271" @default.
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