The rhesus macaque as an animal model for pelvic organ prolapse

Lesley N. Otto, Ov Slayden, Amanda L. Clark, Robert M. Brenner

    Research output: Contribution to journalArticle

    41 Citations (Scopus)

    Abstract

    OBJECTIVE: The purpose of this study was to characterize the pelvic floor of the rhesus macaque as an experimental model for human pelvic organ prolapse and to initiate an evaluation of the effects of estradiol and progesterone on the rhesus paravaginal attachment. STUDY DESIGN: Histologic specimens were prepared from the paravaginal attachment of 13 oophorectomized rhesus macaques. Three animals were treated with estradiol; 6 animals were treated with estradiol and progesterone, and 4 animals were untreated (hormone deprived). Immunocytochemistry was used to localize steroid receptors in the paravaginal attachment. RESULTS: Spontaneous pelvic organ prolapse was observed in rhesus macaques. The paravaginal attachment is comprised of dense collagen and elastic fibers that infiltrate the levator ani muscle. The fibroblasts of this attachment are estrogen and progesterone receptor positive, and the receptors are hormone responsive. CONCLUSION: The rhesus macaque has pelvic floor anatomy that is similar to women and makes an excellent experimental model for the study of prolapse. The rhesus paravaginal attachment is ligamentous and hormone sensitive. Its fibroblast activity may be modified by estrogen treatment in a manner similar to that reported in human pelvic connective tissue. The connective tissue of the paravaginal attachment interdigitates with the levator ani muscle cells, which suggests that this muscle plays a critical role in pelvic floor support.

    Original languageEnglish (US)
    Pages (from-to)416-421
    Number of pages6
    JournalAmerican Journal of Obstetrics and Gynecology
    Volume186
    Issue number3
    DOIs
    StatePublished - 2002

    Fingerprint

    Pelvic Organ Prolapse
    Macaca mulatta
    Pelvic Floor
    Animal Models
    Estradiol
    Anal Canal
    Hormones
    Connective Tissue
    Progesterone
    Theoretical Models
    Fibroblasts
    Muscles
    Elastic Tissue
    Steroid Receptors
    Prolapse
    Progesterone Receptors
    Estrogen Receptors
    Muscle Cells
    Anatomy
    Estrogens

    Keywords

    • Animal model
    • Connective tissue
    • Paravaginal attachment
    • Pelvic organ prolapse
    • Rhesus macaque

    ASJC Scopus subject areas

    • Medicine(all)
    • Obstetrics and Gynecology

    Cite this

    The rhesus macaque as an animal model for pelvic organ prolapse. / Otto, Lesley N.; Slayden, Ov; Clark, Amanda L.; Brenner, Robert M.

    In: American Journal of Obstetrics and Gynecology, Vol. 186, No. 3, 2002, p. 416-421.

    Research output: Contribution to journalArticle

    Otto, Lesley N. ; Slayden, Ov ; Clark, Amanda L. ; Brenner, Robert M. / The rhesus macaque as an animal model for pelvic organ prolapse. In: American Journal of Obstetrics and Gynecology. 2002 ; Vol. 186, No. 3. pp. 416-421.
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