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Sökning: WFRF:(Fortner RT)

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  • Schock, Helena, 1984-, et al. (författare)
  • Longitudinal Assessment of Pregnancy Hormones
  • Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
    • Evidence suggests that the hormonal milieu of pregnancy is an important determinant of subsequent cancer and other chronic diseases in both the mother and the offspring. How well a single blood specimen collected during a pregnancy characterizes exposure to these hormones throughout gestation, and also in subsequent pregnancies, is not well understood. We used serial serum samples from 71 pregnant women (25 primiparous, 25 biparous, and 21 with 2 consecutive pregnancies) with natural, complication-free pregnancies and a healthy offspring at term who participated in a population-based screening trial for congenital infections in Finland between January 1st, 1988 and June 30, 1989 and provided a blood sample in each trimester. Hormone levels were more strongly correlated between consecutive trimesters of a pregnancy than between the 1st and 3rd trimester (e.g. estradiol, 1st vs. 2nd and 2nd vs. 3rd trimester r=0.51 and r=0.60, p<0.01; 1st vs. 3rd trimester r=0.32, p<0.05). Concentrations of sRANKL remained stable throughout gestation, whereas estradiol, estrone, progesterone, testosterone, prolactin, and osteoprotegerin increased throughout pregnancy. First trimester hormone concentrations explained less of the variation in the third trimester on their own than second trimester hormone levels (e.g. estradiol R²T1=16% and R²T2=42%). Addition of maternal (e.g., smoking) and/or child characteristics (e.g., sex) improved the accuracy of the 3rd trimester estimates for some of the hormones. In conclusion, one hormone measurement in early pregnancy, in conjunction with maternal and fetal characteristics, permits estimation of 3rd trimester hormone concentrations.
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