title: [Changes in the nature of the estrous cycle and gametogenesis during superovulation stimulation in rats at different stages of the cycle].
abstract: Estrous cycle, ovulation rate and gamete quality were studied in rats with superovulation induced on different days of the cycle. It was shown that the rat ovaries in estrous were most sensitive to the action of gonadotropins. Heterogeneity in the ovulation rate was noted in animals at the same phase of the cycle. There was a relative increase in the number of gametes with chromosomal alterations in experimental rats, with the value depending on the stage of the cycle when PMS was injected. The study of the estrous cycle in rats with superovulation induced on different days of the cycle has revealed strong hormonal influences on the sequence of stage alterations.
mesh_terms: D000818:Animals; D002869:Chromosome Aberrations; D004971:Estrus / Q000187:drug effects*; D005260:Female; D005718:Gametogenesis / Q000187:drug effects*; D006064:Gonadotropins, Equine / Q000494:pharmacology; D010060:Ovulation / Q000187:drug effects*; D051381:Rats; D013480:Superovulation / Q000187:drug effects*; D013997:Time Factors; D014626:Vaginal Smears
chemical_list: D006064:Gonadotropins, Equine
vernacular_title: Izmenenie kharaktera éstral'nogo tsikla i gametogeneza pri stimuliatsii superovuliatsii u krys v raznye stadii tsikla.