Plasma oxytocin concentrations during the menstrual cycle in the rhesus monkey, Macaca mulatta.
Plasma samples were obtained from 8 conscious rhesus monkeys at 3-4 day intervals throughout the menstrual cycle. Oxytocin concentrations were significantly higher in mid-cycle (Days 10-11) than at Days 4-5 (P < 0.01) and Days 28-29 (P < 0.02, Wilcoxon signed rank test). No significant correlations between oxytocin and oestradiol or progesterone were found.
D000818:Animals; D004958:Estradiol / Q000097:blood; D004971:Estrus; D005260:Female; D000882:Haplorhini; D008251:Macaca / Q000502:physiology*; D008253:Macaca mulatta / Q000502:physiology*; D010121:Oxytocin / Q000097:blood*; D011247:Pregnancy; D011374:Progesterone / Q000097:blood
D011374:Progesterone; D004958:Estradiol; D010121:Oxytocin