Estrogen stimulation of conjugase activity in the uterus of ovariectomized rats. 1975

C L Krumdieck, and L R Boots, and P E Cornwell, and C E Butterworth

Recent observations have indicated that uterine folic acid conjugase (pterolypolyglutamyl hydrolase) undergoes rhythmic variation during the reproductive cycle of the rat. In the present study conjugase activity and ratios of "total" folate to "free" folate were determined in uterine homogenates of ovariectomized rats, with ane without estrogen stimulation. An increase in conjugase levels and a relative increase in the "free" folate component occurred in castrated animals 12 to 18 hours following injection of 10 mug of estradiol-17beta.

UI MeSH Term Description Entries
D008686 Metestrus The period following ESTRUS during which the phenomena of estrus subside in those animals in which pregnancy or pseudopregnancy does not occur.
D010053 Ovary The reproductive organ (GONADS) in female animals. In vertebrates, the ovary contains two functional parts: the OVARIAN FOLLICLE for the production of female germ cells (OOGENESIS); and the endocrine cells (GRANULOSA CELLS; THECA CELLS; and LUTEAL CELLS) for the production of ESTROGENS and PROGESTERONE. Ovaries
D011247 Pregnancy The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH. Gestation,Pregnancies
D011359 Proestrus A phase of the ESTROUS CYCLE that precedes ESTRUS. During proestrus, the Graafian follicles undergo maturation.
D011623 gamma-Glutamyl Hydrolase Catalyzes the hydrolysis of pteroylpolyglutamic acids in gamma linkage to pterolylmonoglutamic acid and free glutamic acid. EC 3.4.19.9. Conjugase,Folate Conjugase,Folyl Conjugate Synthetase,Pteroyl Polyglutamate Hydrolase,Carboxypeptidase G,Carboxypeptidase G1,Carboxypeptidase G2,Folacin Conjugase,Folate Hydrolyzing Enzyme,Folyl Poly-gamma-Glutamate Carboxypeptidase,Folyl Polyglutamate Cleavage Enzyme,Folylpolyglutamate Hydrolase,gamma Glutamyl Hydrolase
D002268 Carboxypeptidases Enzymes that act at a free C-terminus of a polypeptide to liberate a single amino acid residue. Carboxypeptidase
D002369 Castration Surgical removal or artificial destruction of gonads. Gonadectomy,Castrations,Gonadectomies
D004031 Diestrus A phase of the ESTROUS CYCLES that follows METESTRUS. Diestrus is a period of sexual quiescence separating phases of ESTRUS in polyestrous animals.
D004958 Estradiol The 17-beta-isomer of estradiol, an aromatized C18 steroid with hydroxyl group at 3-beta- and 17-beta-position. Estradiol-17-beta is the most potent form of mammalian estrogenic steroids. 17 beta-Estradiol,Estradiol-17 beta,Oestradiol,17 beta-Oestradiol,Aerodiol,Delestrogen,Estrace,Estraderm TTS,Estradiol Anhydrous,Estradiol Hemihydrate,Estradiol Hemihydrate, (17 alpha)-Isomer,Estradiol Monohydrate,Estradiol Valerate,Estradiol Valeriante,Estradiol, (+-)-Isomer,Estradiol, (-)-Isomer,Estradiol, (16 alpha,17 alpha)-Isomer,Estradiol, (16 alpha,17 beta)-Isomer,Estradiol, (17-alpha)-Isomer,Estradiol, (8 alpha,17 beta)-(+-)-Isomer,Estradiol, (8 alpha,17 beta)-Isomer,Estradiol, (9 beta,17 alpha)-Isomer,Estradiol, (9 beta,17 beta)-Isomer,Estradiol, Monosodium Salt,Estradiol, Sodium Salt,Estradiol-17 alpha,Estradiol-17beta,Ovocyclin,Progynon-Depot,Progynova,Vivelle,17 beta Estradiol,17 beta Oestradiol,Estradiol 17 alpha,Estradiol 17 beta,Estradiol 17beta,Progynon Depot
D004971 Estrus The period in the ESTROUS CYCLE associated with maximum sexual receptivity and fertility in non-primate female mammals.

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