Zobrazeno 1 - 10
of 161
pro vyhledávání: '"Masashi, Nagano"'
Publikováno v:
The Journal of Reproduction and Development, Vol 69, Iss 4, Pp 214-217 (2023)
In this study, we evaluated the effects of pre-maturational culture (pre-IVM) on the developmental competence of bovine oocytes derived from an 8-day in vitro growth (IVG) culture system. IVG oocytes were subjected to 5 h pre-IVM before in vitro matu
Externí odkaz:
https://doaj.org/article/94a896d2d8424806bbf6c0ae2197f8c7
Publikováno v:
The Journal of Reproduction and Development, Vol 68, Iss 4, Pp 295-298 (2022)
We investigated the optimal timing of artificial insemination (AI) for achieving pregnancy according to the onset/end of estrus detected by an accelerometer system in Holstein cattle. The conception rates of conventional semen were used as a referenc
Externí odkaz:
https://doaj.org/article/54eb3bc153df4c128b0d7dce7adeaf0a
Autor:
Nattapong NINPETCH, Dagvajamts BADRAKH, HAY MAR KYAW, Kohei KAWANO, Yojiro YANAGAWA, Masashi NAGANO, Seiji KATAGIRI
Publikováno v:
The Journal of Reproduction and Development, Vol 68, Iss 3, Pp 209-215 (2022)
Factors associated with high milk production levels have been linked to alterations in the endometrial epidermal growth factor (EGF) profile, a cause of reduced fertility in dairy cows. Therefore, we examined the leptin system that connects nutrition
Externí odkaz:
https://doaj.org/article/e4860b9db74a4a7aa338f9dab7939828
Publikováno v:
Heliyon, Vol 9, Iss 3, Pp e13896- (2023)
Background and aims: Hepcidin-25 is an iron regulatory factor that plays an important role in anemia in patients with chronic kidney disease. Although liquid chromatography/tandem mass spectroscopy (LC-MS/MS) is the gold standard for measuring hepcid
Externí odkaz:
https://doaj.org/article/95d97acbef7944dc9d21692c12ec1a22
Publikováno v:
The Journal of Reproduction and Development, Vol 68, Iss 2, Pp 144-151 (2022)
The endometrial epidermal growth factor (EGF) profile is an indicator of uterine function and fertility in cattle. The present study aimed to investigate the effects of heat stress on the endometrial EGF profile and fertility in lactating Holstein co
Externí odkaz:
https://doaj.org/article/d4761fd817ed44068cfa57e193b028df
Autor:
Yoshiko TORII, Naoya MATSUMOTO, Hideyuki SAKAMOTO, Masashi NAGANO, Seiji KATAGIRI, Yojiro YANAGAWA
Publikováno v:
The Journal of Reproduction and Development, Vol 66, Iss 6, Pp 563-570 (2020)
It is important to understand ovarian physiology when developing an artificial insemination (AI) protocol. Brown bears (Ursus arctos) have a breeding season from May to July, although the type of estrus (polyestrus or monoestrus) is still contested.
Externí odkaz:
https://doaj.org/article/deef2a9a12ce4d019857a0ee2dc40db4
Publikováno v:
The Journal of Reproduction and Development, Vol 66, Iss 2, Pp 149-154 (2020)
Epidermal growth factor (EGF) concentrations in the uterus show two peaks on days 2–4 and 13–14 during the estrous cycle in fertile cows. Loss of the two peaks has been linked to reduced fertility in repeat breeder cows. This study aimed to exami
Externí odkaz:
https://doaj.org/article/1048421d44df48a19be9ffd95e63ba50
Autor:
Eri Furukawa, Tomoyuki Masaki, Kenichiro Sakaguchi, Min Bo, Yojiro Yanagawa, Koichiro Ueda, Masashi Nagano
Publikováno v:
Journal of Ovarian Research, Vol 13, Iss 1, Pp 1-9 (2020)
Abstract Background The timing of the first postpartum ovulation is an important factor affecting the timing of estrous resumption in dairy cows. The first postpartum ovulation is delayed in cows producing large amounts of milk with an intensive nega
Externí odkaz:
https://doaj.org/article/651610bf0469448da90c291e2eee8a51
Publikováno v:
BMC Gastroenterology, Vol 20, Iss 1, Pp 1-8 (2020)
Abstract Background Hemodialysis patients are prone to constipation, which can adversely affect their quality of life (QOL). Elobixibat, a highly selective inhibitor of the ileal bile acid transporter, can increase the bile acid level in the colon an
Externí odkaz:
https://doaj.org/article/5f595ebba6f347659f900350750f3873
Autor:
Kenichiro Sakaguchi, Yojiro Yanagawa, Koji Yoshioka, Tomoko Suda, Seiji Katagiri, Masashi Nagano
Publikováno v:
Reproductive Biology and Endocrinology, Vol 17, Iss 1, Pp 1-13 (2019)
Abstract Background The antral follicle count (AFC) in mammalian ovaries positively correlates with female fertility. To clarify the causes of differences in fertility between low and high AFC cows, we investigated follicular growth dynamics and horm
Externí odkaz:
https://doaj.org/article/0c60a6c20c8548a8905ab212c1ef7770