[Hormonal interrelations in the hypophyseal-ovarian system in heifers during prostaglandin F2-alpha-induced estrus].
Study of prostaglandin F2 alpha action, synchronizing the estrus, in experiments on heifers demonstrated that Estrumeit (made by ICI, Great Britain), rostaglandin F2 alpha drug, in a dose of 500 micrograms was an active luteolytic factor, leading to the corpus luteum regress, determined by a fall in the progesteron level in the peripheral blood. During the estrus induction there was a short-term elevation in production and excretion of testosterone, this pointing to the prostoglandins participation in the activation of the androgenic ovarian function. Prolactin hyposecretion was shown to be a necessary condition for the realization of general biological processes for the occurrence of estrus.
D000818:Animals; D002417:Cattle / Q000502:physiology*; D004971:Estrus / Q000187:drug effects*; D005260:Female; D007986:Luteinizing Hormone / Q000502:physiology; D010053:Ovary / Q000502:physiology*; D010902:Pituitary Gland / Q000502:physiology*; D011247:Pregnancy; D011374:Progesterone / Q000502:physiology; D011388:Prolactin / Q000502:physiology; D011461:Prostaglandins F, Synthetic / Q000494:pharmacology*; D013739:Testosterone / Q000502:physiology
D011461:Prostaglandins F, Synthetic; D013739:Testosterone; D011374:Progesterone; D011388:Prolactin; D007986:Luteinizing Hormone
Gormonal'nye vzaimootnosheniia v sisteme gipofiz-iaichniki u telok v period éstrusa, indutsirovannogo prostaglandinom F2 alpha.