M
Mohamed S. Medan
Researcher at Suez Canal University
Publications - 40
Citations - 1007
Mohamed S. Medan is an academic researcher from Suez Canal University. The author has contributed to research in topics: Ovulation & Follicular phase. The author has an hindex of 20, co-authored 39 publications receiving 958 citations. Previous affiliations of Mohamed S. Medan include Tokyo University of Agriculture and Technology.
Papers
More filters
Journal ArticleDOI
Ovarian Dynamics and Their Associations with Peripheral Concentrations of Gonadotropins, Ovarian Steroids, and Inhibin During the Estrous Cycle in Goats
TL;DR: Ovarian changes determined by daily transrectal ultrasound and its relationship with FSH, LH, estradiol-17β, progesterone, and inhibin were investigated in six goats and demonstrated that follicular waves occurred in goats and that the predominant follicular wave pattern was four waves with ovulation from wave 4.
Journal ArticleDOI
Ovarian and hormonal response of female goats to active immunization against inhibin.
Mohamed S. Medan,Gen Watanabe,Kazuaki Sasaki,Yoshio Nagura,H Sakaime,M. Fujita,Sayed Sharawy,Kazuyoshi Taya +7 more
TL;DR: It is demonstrated that active immunization against inhibin enhances ovarian follicular development and ovulation rate by promoting an increase in pituitary FSH secretion and may be a useful alternative to the conventional approach of superovulation in goats.
Journal ArticleDOI
Effects of passive immunization of goats against inhibin on follicular development, hormone profile and ovulation rate.
Mohamed S. Medan,Gen Watanabe,Kazuaki Sasaki,Nagura Y,H Sakaime,M. Fujita,Sayed Sharawy,Kazuyoshi Taya +7 more
TL;DR: It is demonstrated that passive immunization against inhibin at 48 h before treatment with PGF(2alpha) induces the development of more follicles and increases ovulation rate and inhibin antiserum treatment may be an alternative to the use of exogenous gonadotrophins for induction of superovulation in goats.
Journal ArticleDOI
Follicular and hormonal dynamics during the estrous cycle in goats.
Mohamed S. Medan,Mohamed S. Medan,Gen Watanabe,Gen Watanabe,Kazuaki Sasaki,Nigel P. Groome,Sayed Sharawy,Kazuyoshi Taya,Kazuyoshi Taya +8 more
TL;DR: The growth of ovarian follicles in goats exhibits a wave-like pattern, and follicular dominance is less apparent in goats, suggesting that inhibin A may be a key hormone for regulation of the follicular wave through suppression of FSH secretion in goats.
Journal ArticleDOI
Early pregnancy diagnosis by means of ultrasonography as a method of improving reproductive efficiency in goats.
Mohamed S. Medan,Mohamed S. Medan,Gen Watanabe,Gen Watanabe,Gamal Absy,Kazuaki Sasaki,Sayed Sharawy,Kazuyoshi Taya,Kazuyoshi Taya +8 more
TL;DR: In conclusion, progesterone assay at day 21 post-mating (cut-off value, 1 ng/ml) can be used for pregnancy diagnosis in goats and B-mode transrectal ultrasonography was more efficient due to detection of embryo and confirmation of its viability by heartbeats.