Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Yoshiyuki Takahashi"'
Autor:
Yuma Kitase, Yoshiaki Sato, Sakiko Arai, Atsuto Onoda, Kazuto Ueda, Shoji Go, Haruka Mimatsu, Mahboba Jabary, Toshihiko Suzuki, Miharu Ito, Akiko Saito, Akihiro Hirakawa, Takeo Mukai, Tokiko Nagamura-Inoue, Yoshiyuki Takahashi, Masahiro Tsuji, Masahiro Hayakawa
Publikováno v:
Frontiers in Cellular Neuroscience, Vol 14 (2020)
Frontiers in Cellular Neuroscience
Frontiers in Cellular Neuroscience
Fetal growth restriction (FGR) is a major complication of prenatal ischemic/hypoxic exposure and affects 5%–10% of pregnancies. It causes various disorders, including neurodevelopmental disabilities due to chronic hypoxia, circulatory failure, and
Autor:
Takashi Yamazaki, Soichi Kageyama, Kenichi Takahashi, Hiroki Hirayama, Takashi Fujii, Satoru Moriyasu, Ken Sawai, Kozo Sakamoto, Shigeo Fukuda, Hitomi Yoshino, Hiroyuki Hayakawa, Yoshiyuki Takahashi, Akira Naito
Publikováno v:
The Journal of Reproduction and Development
Artificial insemination with cryopreserved semen is a well-developed technique commonly used for controlled reproduction in cattle. However, despite current technical advances, cryopreservation continues to damage bull spermatozoa, resulting in a los
Autor:
Kentaro Q. Sakamoto, Yojiro Yanagawa, Yoshiyuki Takahashi, Seiji Katagiri, Chihiro Kanno, Masashi Nagano
Publikováno v:
The Journal of Veterinary Medical Science
In the present study, bull sperm in the first and second ejaculates were divided into subpopulations based on their motility characteristics using a cluster analysis of data from computer-assisted sperm motility analysis (CASA). Semen samples were co
Autor:
Masashi Nagano, Sung-Sik Kang, Yoshiyuki Takahashi, Keisuke Koyama, Yojiro Yanagawa, Weiping Huang
Publikováno v:
The Journal of Veterinary Medical Science
The objective of this research was to estimate the optimal timing for fertilization to achieve proper embryonic development of in vitro-matured bovine oocytes. First, cumulus-oocyte complexes were subjected to in vitro maturation (IVM) for 14–22 hr
Autor:
Masashi Nagano, Weiping Huang, Yojiro Yanagawa, Yoshiyuki Takahashi, Sung-Sik Kang, Keisuke Koyama
Publikováno v:
Journal of Reproduction and Development. 60:136-142
The objective of this research was to clarify the aging-related changes in in vitro-matured bovine oocytes. Firstly, we examined the fertilization and embryonic development of bovine oocytes after 22 and 30–34 h of in vitro maturation (IVM). The oo
Autor:
Keisuke Koyama, Shogo Higaki, Seiji Katagiri, Tatsuyuki Takada, Masao Kishi, Masashi Nagano, Yoshiyuki Takahashi
Publikováno v:
Zygote (Cambridge, England). 25(1)
SummaryThe preselection of highly developmentally competent oocytes forin vitromaturation (IVM) is crucial for improving assisted reproductive technology. Although several intrinsic markers of oocyte quality are known to be closely related to the ons
Publikováno v:
The Journal of Reproduction and Development
The objective of this study was to clarify the effects of prematurational culture (pre-IVM) supplemented with 3-isobutyl-1-methylxanthine (IBMX) on nuclear and cytoplasmic maturation of in vitro-grown bovine oocytes. In experiment 1, oocytes (95 μm
Publikováno v:
African Journal of Biotechnology; Vol 10, No 46 (2011); 9522-9527
Sperm suspensions of 4 male mice (A, B, C and D), having an initial motility grade of 3.5 were used to examine the presence of DNA topoisomerase II (top 2) activity in sperm heads. The initial percentage motile of male A was 75%, male B was 80%, male
Autor:
Yukio Kanai, Yoshiyuki Takahashi, Peregrino G. Duran, Carlos Manuel Ulloa Ulloa, Libertado C. Cruz, Eufrocina P. Atabay, Danilda Hufana-Duran, Midori Yoshizawa
Publikováno v:
Journal of Mammalian Ova Research. 27:157-160
The present study focused on determining the incidence of chromosomal abnormalities in river buffalo embryos produced in vitro to reveal the causes of the low conception rate of transferred embryos. River buffalo oocytes were collected from 2- to 8-m
Autor:
Shogo Higaki, Yoshiyuki Takahashi, Noriko Kagawa, Etsuro Yamaha, Yutaka Kawakami, Yoshiki Eto, Masashi Nagano, Masashige Kuwayama, Seiji Katagiri
Publikováno v:
REPRODUCTION. 139:733-740
This study aimed to produce fertile zebrafish (Danio rerio) possessing germ cells (gametes) that originated from cryopreserved primordial germ cells (PGCs). First, to improve the vitrification procedure of PGCs in segmentation stage embryos, dechorio