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  • Title: Qualitative study of prostaglandins in pregnant uterine tissues: effects of estradiol- 17 beta and betamethasone.
    Author: Lima FE, Lacuara JL, Vastik JF, Cremer-Lacuara M.
    Journal: Prostaglandins Med; 1979 Dec; 3(6):387-93. PubMed ID: 550162.
    Abstract:
    The presence of prostaglandins (PGs) E1 and F2 alpha in extracts of endometrial, myometrial and placental samples from 19 pregnant women at term, was investigated. The tissue samples were obtained from the following group of patients: untreated, A) with onset of labor, B) without onset of labor; pre-treated (without onset of labor); C) with betamethasone, D) with estradiol-17 beta. Thin-layer chromatography determinations demonstrated PGE1 presence in all tissue samples from the four groups. On the other hand, PGF2 alpha was consistently found in placenta and endometrial samples from groups A, C, and D, but it was absent in those from group B. The results suggest a physiological role of PGF2 alpha in human parturition, and a possible influence of estrogens and corticosteroids on the appearance of this prostaglandin.
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