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Sperm mobility and oocyte number predict multinucleate formation in human IVF.
2003 SEP 4 - (NewsRx.com & NewsRx.net) -- Sperm mobility and oocyte number predict multinucleate formation in human IVF.
"This study was carried out to analyze if some of the sperm parameters assessed by computer-aided sperm analysis (CASA) are associated with multinucleate formation in human in vitro fertilization (IVF). In the present study, 137 IVF-embryo transfer (ET) treatment cycles in which pronucleate formation could be observed were enrolled. Sperm parameters after swim-up were assessed using CASA and strict criteria," according to researchers in Japan.
"Thirty-two (2.3%) of 1368 oocytes fertilized were judged as multinucleate formation, which occurred in 25 of 137 IVF-ET treatment cycles, giving the incidence of 18.2%. The factors associated with multinucleate formation were analyzed."
"There were significant differences of the numbers of oocytes collected (13.9 vs. 9.2; p=0.028), fertilization rate (88.8% vs. 71.9%; p=0.011), curvilinear velocity (VCL) (162.7 microm/sec vs. 149.1 microm/sec; p=0.034), average path velocity (VAP) (100.3 microm/sec vs. 93.1 microm/sec; p=0.016), and amplitude of lateral head displacement (ALH) (5.9 microm vs. 5.3 microm; p=0.046) between 25 cycles with multipronucleate formation and 112 cycles with two pronucleate formations," wrote H. Shibahara and colleagues, Jichi Medical School, Department ...
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- New findings in reproductive science described from Shandong University.
- Newspaper article from: Science Letter June 30, 2009 700+ words
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Source: HighBeam Research, Sperm mobility and oocyte number predict multinucleate formation in...