Plasma sex hormone concentrations during the reproductive cycle in the male lizard, Podarcis s. sicula. 1990

S Andò, and M L Panno, and G Ciarcia, and E Imbrogno, and M Buffone, and E Beraldi, and D Sisci, and F Angelini, and V Botte
Dipartimento di biologia cellulare Università della Calabria, Arcavacata di Rende-Cosenza, Italy.

Progesterone, 17-hydroxyprogesterone, androstenedione, 5 alpha-dihydrotestosterone, dehydroepiandrosterone, testosterone and oestradiol concentrations in the plasma were measured by simultaneous radioimmunoassay in males of the lizard Podarcis s. sicula. Hormonal determinations were performed at monthly intervals from January to December (except for August). Testosterone and androstenedione reached peak values of 174.8 ng/ml and 21.4 ng/ml in the mating season (spring) and then testosterone fell abruptly to 5.9 ng/ml in June remaining at this level during hibernation when dehydroepiandrosterone (DHA) reached a maximal level of 28.5 +/- 9.3 ng/ml. Castration resulted in a marked decrease of testosterone, androstenedione, dihydrotestosterone and DHA values, with DHA being significantly lowered only during the winter season. In castrated animals, however, testosterone and androstenedione persisted conspicuously in the plasma during the breeding period, suggesting that adrenal sex steroid output may change during the annual reproductive cycle. In intact animals, progesterone and oestradiol exhibited peak values during the refractory period after the mating season. We suggest a probable role of oestradiol in the induction of the refractory period in this lizard.

UI MeSH Term Description Entries
D008116 Lizards Reptiles within the order Squamata that generally possess limbs, moveable EYELIDS, and EXTERNAL EAR openings, although there are some species which lack one or more of these structures. Chameleons,Geckos,Chameleon,Gecko,Lizard
D008297 Male Males
D009919 Orchiectomy The surgical removal of one or both testicles. Castration, Male,Orchidectomy,Castrations, Male,Male Castration,Male Castrations,Orchidectomies,Orchiectomies
D011374 Progesterone The major progestational steroid that is secreted primarily by the CORPUS LUTEUM and the PLACENTA. Progesterone acts on the UTERUS, the MAMMARY GLANDS and the BRAIN. It is required in EMBRYO IMPLANTATION; PREGNANCY maintenance, and the development of mammary tissue for MILK production. Progesterone, converted from PREGNENOLONE, also serves as an intermediate in the biosynthesis of GONADAL STEROID HORMONES and adrenal CORTICOSTEROIDS. Pregnenedione,Progesterone, (13 alpha,17 alpha)-(+-)-Isomer,Progesterone, (17 alpha)-Isomer,Progesterone, (9 beta,10 alpha)-Isomer
D012098 Reproduction The total process by which organisms produce offspring. (Stedman, 25th ed) Human Reproductive Index,Human Reproductive Indexes,Reproductive Period,Human Reproductive Indices,Index, Human Reproductive,Indexes, Human Reproductive,Indices, Human Reproductive,Period, Reproductive,Periods, Reproductive,Reproductive Index, Human,Reproductive Indices, Human,Reproductive Periods
D003687 Dehydroepiandrosterone A major C19 steroid produced by the ADRENAL CORTEX. It is also produced in small quantities in the TESTIS and the OVARY. Dehydroepiandrosterone (DHEA) can be converted to TESTOSTERONE; ANDROSTENEDIONE; ESTRADIOL; and ESTRONE. Most of DHEA is sulfated (DEHYDROEPIANDROSTERONE SULFATE) before secretion. Dehydroisoandrosterone,Prasterone,5-Androsten-3-beta-hydroxy-17-one,5-Androsten-3-ol-17-one,Androstenolone,DHEA,Prasterone, 3 alpha-Isomer,5 Androsten 3 beta hydroxy 17 one,5 Androsten 3 ol 17 one,Prasterone, 3 alpha Isomer
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
D006605 Hibernation The dormant state in which some warm-blooded animal species pass the winter. It is characterized by narcosis and by sharp reduction in body temperature and metabolic activity and by a depression of vital signs. Hibernation, Artificial,Induced Hibernation,Artificial Hibernation,Artificial Hibernations,Hibernation, Induced,Hibernations,Induced Hibernations
D006908 Hydroxyprogesterones Metabolites or derivatives of PROGESTERONE with hydroxyl group substitution at various sites.
D000735 Androstenedione A delta-4 C19 steroid that is produced not only in the TESTIS, but also in the OVARY and the ADRENAL CORTEX. Depending on the tissue type, androstenedione can serve as a precursor to TESTOSTERONE as well as ESTRONE and ESTRADIOL. 4-Androstene-3,17-dione,delta-4-Androstenedione,4 Androstene 3,17 dione,delta 4 Androstenedione

Related Publications

S Andò, and M L Panno, and G Ciarcia, and E Imbrogno, and M Buffone, and E Beraldi, and D Sisci, and F Angelini, and V Botte
August 1992, General and comparative endocrinology,
S Andò, and M L Panno, and G Ciarcia, and E Imbrogno, and M Buffone, and E Beraldi, and D Sisci, and F Angelini, and V Botte
September 2014, General and comparative endocrinology,
S Andò, and M L Panno, and G Ciarcia, and E Imbrogno, and M Buffone, and E Beraldi, and D Sisci, and F Angelini, and V Botte
June 1989, Journal of neuroendocrinology,
S Andò, and M L Panno, and G Ciarcia, and E Imbrogno, and M Buffone, and E Beraldi, and D Sisci, and F Angelini, and V Botte
September 2014, General and comparative endocrinology,
S Andò, and M L Panno, and G Ciarcia, and E Imbrogno, and M Buffone, and E Beraldi, and D Sisci, and F Angelini, and V Botte
November 1997, General and comparative endocrinology,
S Andò, and M L Panno, and G Ciarcia, and E Imbrogno, and M Buffone, and E Beraldi, and D Sisci, and F Angelini, and V Botte
June 1994, Hormones and behavior,
S Andò, and M L Panno, and G Ciarcia, and E Imbrogno, and M Buffone, and E Beraldi, and D Sisci, and F Angelini, and V Botte
March 1991, Gynecological endocrinology : the official journal of the International Society of Gynecological Endocrinology,
S Andò, and M L Panno, and G Ciarcia, and E Imbrogno, and M Buffone, and E Beraldi, and D Sisci, and F Angelini, and V Botte
July 1993, Molecular reproduction and development,
S Andò, and M L Panno, and G Ciarcia, and E Imbrogno, and M Buffone, and E Beraldi, and D Sisci, and F Angelini, and V Botte
January 2017, Comptes rendus biologies,
S Andò, and M L Panno, and G Ciarcia, and E Imbrogno, and M Buffone, and E Beraldi, and D Sisci, and F Angelini, and V Botte
December 1991, General and comparative endocrinology,
Copied contents to your clipboard!