Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Takumi Takeuchi"'
Autor:
Takumi Takeuchi
Publikováno v:
Journal of Mammalian Ova Research. 29:27-34
The decline of human fecundability stems from compromised quality and reduced quantity of gametes. The age-related female infertility and spermatogenic failure have been the major obstacle to overcome in ART with only limited success unless donated g
Publikováno v:
Seminars in Reproductive Medicine. 27:191-201
Notwithstanding the broad success of in vitro fertilization (IVF), a failure to achieve fertilization still plagues a substantial group of patients, with sperm abnormalities the main culprit. In the 1980s, several micromanipulation procedures were ad
Publikováno v:
Biology of Reproduction. 72:584-592
Germinal vesicle transplantation (GVT) has been proposed as a possible treatment to correct age-related oocyte aneuploidy caused by dysfunctional ooplasm. How healthy ooplasm regulates normal meiosis and subsequent development has yet to be elucidate
Publikováno v:
Human Reproduction. 17:2165-2173
BACKGROUND: This study describes the technical approaches used in treatment of age-related oocyte aneuploidy, the efficiency of each step of nuclear transplantation into mouse and human oocytes, and the ability of germinal vesicle (GV) transplantatio
Publikováno v:
Reproductive BioMedicine Online. 4:237-242
This paper describes the technical approach to treatment of age-related oocyte aneuploidy. Although one solution can be oocyte/embryo selection, another is represented by the nuclear transplantation procedure. The efficiency of nuclear transplantatio
Autor:
Marcos M. Reis, Ming C. Tsai, Takumi Takeuchi, Zev Rosenwaks, J. Michael Bedford, Gianpiero D. Palermo
Publikováno v:
Human Reproduction. 15:988-998
Although great progress has been made in both the investigation and treatment of infertility, a considerable number of patients still fail to conceive. Spermatogenic failure and/or oocyte ageing appear to be responsible for a large proportion of case
Publikováno v:
Human Reproduction. 14:1312-1317
Transplanting a germinal vesicle (GV) to another enucleated oocyte provides a possible way to avoid age-related aneuploidy in metaphase II (MII) oocytes from older women. This study was conducted to examine the efficiency of each step of nuclear tran
Autor:
D. Monahan, Zev Rosenwaks, J.C.Y. Hu, Queenie V. Neri, Gianpiero D. Palermo, Roberta Maggiulli, Takumi Takeuchi
Publikováno v:
Systems biology in reproductive medicine. 56(5)
The refinement of gamete micromanipulation techniques has made conception possible for couples with male factor infertility who otherwise would remain childless. Moreover, intracytoplasmic sperm injection (ICSI) has ensured that such refractory cases
Publikováno v:
Human reproduction (Oxford, England). 19(4)
BACKGROUND: Germinal vesicle transplantation (GVT) provides a means of investigating interactions between karyoplasts and cytoplasts isolated from different cells. Technically, GVT can be accomplished with a high degree of efficiency without compromi
Autor:
Takumi Takeuchi, Queenie V. Neri, Gianpiero D. Palermo, Y. Katagiri, Zev Rosenwaks, Lucinda L. Veeck
Publikováno v:
Reproductive biomedicine online. 6(4)
Intracytoplasmic sperm injection (ICSI) entails the mechanical insertion of a chosen spermatozoon directly into the cytoplasm of an oocyte. Due to the consistent fertilization and pregnancy outcome, ICSI is routinely used to treat azoospermic patient