Zobrazeno 1 - 10
of 108
pro vyhledávání: '"Billy N. Day"'
Autor:
Billy N. Day, H. Funahashi
Publikováno v:
Bioscientifica Proceedings.
A series of integrated, effective techniques is required to produce pig embryos from follicular oocytes in vitro. The failure to form a male pronucleus and polyspermy have been serious problems in efforts to produce embryos efficiently in vitro from
Autor:
Wei Xu, Gaurishankar Manandhar, Alexander T.H. Wu, Peter Sutovsky, Yanwei Xi, Young-Joo Yi, Billy N. Day, Mika Katayama, Richard Oko, Kwang-Wook Park, Randall S. Prather
Publikováno v:
Journal of Biological Chemistry. 282:12164-12175
We report a novel alkaline extractable protein of the sperm head that exclusively resides in the post-acrosomal sheath region of the perinuclear theca (PT) and is expressed and assembled in elongating spermatids. It is a protein that shares sequence
Autor:
Mika Katayama, Peter Sutovsky, Boh S Yang, Billy N. Day, August Rieke, T.C. Cantley, Randy Farwell, Richard Oko
Publikováno v:
Reproduction. 130:907-916
The effects of sperm-immobilization methods on decondensation of sperm chromatin and retention of subacrosomal sperm perinuclear theca (SAR-PT) after intracytoplasmic sperm injection (ICSI) were examined in pigs. Sperm membrane damage caused by diffe
Autor:
Gaurishankar Manandhar, Juraj Letko, Peter Sutovsky, Miriam Sutovsky, Randall L. Zimmer, Randall S. Prather, Liangxue Lai, Jozef Laurincik, Kathy L. Sharpe-Timms, José Néstor Caamaño, Billy N. Day
Publikováno v:
Reproduction. 129:269-282
Major vault protein (MVP), also called lung resistance-related protein is a ribonucleoprotein comprising a major part (>70%) of the vault particle. The function of vault particle is not known, although it appears to be involved in multi-drug resistan
Autor:
Randall S. Prather, Liangxue Lai, José Néstor Caamaño, Clifton N. Murphy, August Rieke, Brad A. Didion, T.C. Cantley, Guangming Wu, Billy N. Day, Jiude Mao, Tod C. McCauley
Publikováno v:
Theriogenology. 62:1544-1556
The present experiments were conducted to optimize in vitro fertilization conditions for zona pellucida-free (ZP-free) oocytes and their subsequent development. The results demonstrated that: (1) maximal fertilization efficiency was achieved at 200 s
Autor:
Tod C. McCauley, Miriam Sutovsky, Peter Sutovsky, Jose Nestor Caamaño, Billy N. Day, Gaurishankar Manandhar, Winston E. Thompson
Publikováno v:
Biology of Reproduction. 71:1625-1637
The ubiquitin-proteasome pathway has been implicated in the penetration of ascidian vitelline envelope by the fertilizing spermatozoon (Sawada et al., Proc Natl Acad Sci U S A 2002; 99:1223-1228). The present study provides experimental evidence demo
Publikováno v:
Theriogenology. 62:544-552
The present study was conducted to determine if the efficiency of in vitro pig embryo production could be improved by a reduction in the period of time that oocytes are exposed to sperm during in vitro fertilization. A total of 1596 immature cumulus-
Autor:
Tod C. McCauley, M.R. Mazza, Jiude Mao, D. Di Berardino, Brad A. Didion, Guangming Wu, Gianfranco Coppola, Giuseppe Coppola, Billy N. Day
Publikováno v:
Theriogenology. 60:1569-1580
A cytogenetic study was undertaken to quantify, by chromosomal karyotyping, the incidence and type of chromosomal abnormalities present in Day-6 in vitro-produced (IVP) porcine embryos. Morphologically normal Day-6 blastocysts (n=318) were fixed and
Publikováno v:
Microscopy Research and Technique. 61:335-341
Polyspermy is one of the most commonly observed abnormal types of fertilization in mammalian oocytes. In vitro fertilization (IVF) provides approaches to study the mechanisms by which oocytes block polyspermic fertilization. Accumulated data indicate
Publikováno v:
Biology of Reproduction. 68:1793-1800
Ubiquitin-dependent proteolysis has been implicated in the recognition and selective elimination of paternal mitochondria and mitochondrial DNA (mtDNA) after fertilization in mammals. Initial evidence suggests that this process is contributed to by l