Serum estradiol and progesterone during pregnancy and the status of the corpus luteum at delivery in cynomolgus monkeys (Macacafascicularis)

Gary D. Hodgen, Richard L. Stouffer, Donald L. Barber, Wilbert E. Nixon

    Research output: Contribution to journalArticle

    16 Scopus citations

    Abstract

    Levels of estradiol and progesterone in peripheral serum of seven cynomolgus monkeys (Macaca fascicularis) were measured from about the 30th day of pregnancy until parturition. Although the pattern of each steroid in circulation differed somewhat from the respective patterns in rhesus monkeys (Macaca mulatta), there were basic similarities. On the day of delivery, the corpus luteum was excised and in vitro incubation of dispersed luteal cells was performed. Isolated luteal cells produced progesterone under control conditions and responded to the addition of HCG with enhanced steroidogenesis. Accordingly, "rejuvenation" of the corpus luteum may occur during advanced gestation in cynomolgus monkeys. These findings, along with establishing the efficacy of the Subhuman Primate Pregnancy Test kit to diagnose pregnancy in this macaque, extend previous evidence for utility of cynomolgus monkeys as a primate model for study of steroid hormones in pregnancy.

    Original languageEnglish (US)
    Pages (from-to)295-301
    Number of pages7
    JournalSteroids
    Volume30
    Issue number2
    DOIs
    StatePublished - Aug 1977

    ASJC Scopus subject areas

    • Biochemistry
    • Molecular Biology
    • Endocrinology
    • Pharmacology
    • Clinical Biochemistry
    • Organic Chemistry

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