title: Changes in electrical impedance of the vaginal medium during the menstrual cycle of female rhesus monkeys (Macaca mulatta).
abstract: Changes in electrical impedance of the vaginal medium during the menstrual cycle were recorded in female Rhesus monkeys using electrical probe and were correlated with estradiol-17 beta and progesterone plasma concentrations. A gradual decrease in impedance was observed during the follicular phase, the lowest values being observed between days 12-17 of the cycle. Impedance increased again during the first third of the luteal phase until day 21. The reversal of the impedance gradient's sign was nearly concomitant with the appearance of a detectable plasma progesterone concentration. These results support the use of vaginal impedance measurements as a help for the diagnosis of the periovulatory time in the female Rhesus monkey.
authors: Ministère de la Défense, Centre d'Etudes et de Recherches de Médecine Aérospatiale, Paris, France.
authors: L
authors: L
authors: Fischer
authors: G
authors: G
authors: Germain
authors: G
authors: G
authors: Florence
authors: C
authors: C
authors: Milhaud
mesh_terms: D000818:Animals; D004553:Electric Conductivity; D004958:Estradiol / Q000097:blood; D005260:Female; D008253:Macaca mulatta / Q000502:physiology*; D008597:Menstrual Cycle / Q000502:physiology*; D010061:Ovulation Detection / Q000662:veterinary; D011374:Progesterone / Q000097:blood; D014621:Vagina / Q000502:physiology*
chemical_list: D011374:Progesterone; D004958:Estradiol