title: [Mechanism of the development of permanent estrus in rats after transplantation of the ovaries into a low temperature medium].
abstract: Autotransplantation of the ovaries to the ears of adult rats induces permanent estrus following 5-7 days. Autotransplantation of the ovaries beneath the renal capsules makes the sexual cycle return to normal after the same period. Autotransplantation of the ovaries to the ears of infantile rats brings about pubertas precox followed by normal sexual cycle. Permanent estrus ensues only after 4 months. Transplantation of the ovaries from infantile rats to adult ones and vice versa has shown that age-related differences in the alterations seen in the sexual cycle in response to gonadal transplantation to the ears are caused by age-related differences in the recipients, precisely by those in the cyclic center.
mesh_terms: D000367:Age Factors; D000818:Animals; D002369:Castration; D004431:Ear, External; D004967:Estrogens / Q000378:metabolism*; D004971:Estrus; D005260:Female; D010053:Ovary / Q000503:physiopathology* / Q000637:transplantation*; D011247:Pregnancy; D051381:Rats; D013696:Temperature; D014182:Transplantation, Autologous
chemical_list: D004967:Estrogens
vernacular_title: O mekhanizme vozniknoveniia postoiannogo éstrusa u krys posle transplantatsii iaichnikov v sredu s ponizhennoĭ temperaturoĭ.