  Regolazione della crescité follicolare e luteinica. Ovulazione, corpo luteo e luteolisi. Summa.Drion, Pierre  ; ; Hanzen, Christian et alin Riproduzione dei ruminanti (1997), 14(9), 17-25 Detailed reference viewed: 24 (2 ULg)Regolazione della crescité follicolare e luteinica. Folliculogenesi e atresia. Summa.Drion, Pierre ; ; Hanzen, Christian et alin Summa (1997), 14(9), 5-16 Detailed reference viewed: 30 (8 ULg)Regolazione della crescité follicolare e luteinica. Ovulazione, corpo luteo e luteolisiDrion, Pierre ; ; Hanzen, Christian et alin Riproduzione dei Ruminanti (1997), 14(9), 17-25 Most ovarian follicles (99.9%) will end up with follicular atresia. During antral stages atresia depends on a reduction of FSH levels secondary to estradiol and inhibin secretions by the dominant follicle ... [more ▼] Most ovarian follicles (99.9%) will end up with follicular atresia. During antral stages atresia depends on a reduction of FSH levels secondary to estradiol and inhibin secretions by the dominant follicle. Plasma levels in estradiol higher than 12pg/ml for at least 12 hours in bovine will cause the reversal of the negative feed-back effect of estradiol on the hypothalamus inducing the preovulatory peak of LH. So that the ovulatory discharge does not occur prematurely, the dominant follicle also secretes GnSIF which desensitises the hypohtesis to the action of GnRH. After ovulation, the corupus luteum, a true endocrine gland, develops. [less ▲] Detailed reference viewed: 56 (9 ULg)Regolazione della crescité follicolare et luteinica. Folliculogenesi e atresia. SummaDrion, Pierre ; Beckers, Jean-François ; Ectors, Fabien et alin Riproduzione dei Ruminanti (1997), 14(9), 5-16 Hypophyseal production of FSH and LH depends on a pulsating secretion of GnRH by the Hypothalamus. At the beginning of the cycle, this secretion sets free the FSH from the hypothesis responsible for ... [more ▼] Hypophyseal production of FSH and LH depends on a pulsating secretion of GnRH by the Hypothalamus. At the beginning of the cycle, this secretion sets free the FSH from the hypothesis responsible for follicular recruiment. The recruited follicles produce estradiol, inhibin and follistatin which reduce the FSH secretion (negative feed back) reducing their support to hormonodependant follicles which become atresic. The dominant follicle, subjected to internal self stimulation is not sensitive to the reduction in FSH levels and carries on synthesising more and more estradiol. [less ▲] Detailed reference viewed: 35 (3 ULg)Régulation de la croissance folliculaire et lutéale: 1. Folliculogenèse et atrésieDrion, Pierre ; Ectors, Fabien ; Hanzen, Christian et alin Point Vétérinaire (1996), 28 Detailed reference viewed: 110 (11 ULg)Regulation de la croissance folliculaire et lutéale. 2. Ovulation, corps jaune et lutéolyseDrion, Pierre ; ; Hanzen, Christian et alin Point Vétérinaire (1996), 28 Detailed reference viewed: 111 (22 ULg)Régulation de la croissance folliculaire et lutéale: 2. Ovulation, corps jaune et lutéolyseDrion, Pierre ; Ectors, Fabien ; et alin Point Vétérinaire (1996), 28 Detailed reference viewed: 52 (8 ULg) |
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