Biol Reprod Keystone Symposia Conference on Frontiers in Reproductive Biology & Regulation of Fertility.
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Biology of Reproduction, Vol 30, 459-470, Copyright © 1984 by Society for the Study of Reproduction

ARTICLES

Molecular differentiation of the mouse genital tract: altered protein synthesis following prenatal exposure to diethylstilbestrol

RR Newbold, DB Carter, SE Harris and JA McLachlan

Exposure in utero to the synthetic estrogen diethylstilbestrol (DES) has been associated with the subsequent development of reproductive tract lesions in both women and experimental animals. Using the techniques of organ culture and two-dimensional (2-D) gel electrophoresis, the effects of DES on protein synthetic patterns were studied during fetal and neonatal development of the CD-1 mouse. The protein patterns, analyzed by comparing 2-D fluorograms after [35S] methionine incorporation at different developmental stages, were correlated with the histology at the same age. Several qualitative and quantitative changes in protein synthesis were observed after prenatal DES exposure. A protein, apparent by Day 14 of gestation, with molecular weight approximately 70,000 and pI of 5.8, was observed to be greatly diminished in all reproductive tract tissues exposed to DES during prenatal development. This alteration, induced in utero, persists through the early postnatal differentiation of the genital tract (17 days old). This protein may provide an early marker for alterations in normal reproductive tract function.




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Copyright © 1984 by the Society for the Study of Reproduction.