Improved techniques for separating motile spermatozoa from human semen.
نویسندگان
چکیده
منابع مشابه
upstream; a novel method for separating human motile sperms
background: sperm preparation is a fundamental step in art and attempt for developing new methods to be continued. objective: to evaluate the efficacy of upstream method for separation of human spermatozoa and its effects on sperm parameters including: motility morphology and concentration. materials and methods: semen samples from 17 men who referred to infertility clinic for evaluating their ...
متن کاملUpstream; a novel method for separating human motile sperms
Background: Sperm preparation is a fundamental step in ART and attempt for developing new methods to be continued. Objective: To evaluate the efficacy of upstream method for separation of human spermatozoa and its effects on sperm parameters including: motility, morphology, and concentration. Materials and Methods: Semen samples from 17 men who referred to infertility clinic for evaluating thei...
متن کاملSperm tail flexibility test: a simple test for selecting viable spermatozoa for intracytoplasmic sperm injection from semen samples without motile spermatozoa.
PURPOSE The objective was to describe the results of the injection of immotile spermatozoa with flexible tails when only immotile spermatozoa are present in the semen sample. METHODS A retrospective study was conducted to analyze the procedure results for 10 couples who participated in our intracytoplasmic sperm injection program. The sperm tail was considered flexible when it moved up and do...
متن کاملA method of concentrating spermatozoa in human semen.
some hours must elapse between ejaculation and insemination the viability of the sperm may be improved by the addition of suitable diluents, as is the usual practice in animal insemination. In human semen, however, the improved motility due to dilution is seldom enough to compensate for the reduction in density, unless the sperm are subsequently concentrated by centrifuging or some other means....
متن کاملProcessing of semen by density gradient centrifugation selects spermatozoa with longer telomeres for assisted reproduction techniques.
The ends of eukaryotic chromosomes contain specialized chromatin structures called telomeres, the length of which plays a key role in early human embryonic development. Although the effect of sperm preparation techniques on major sperm characteristics, such as concentration, motility and morphology have been previously documented, the possible status of telomere length and its relation with spe...
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ژورنال
عنوان ژورنال: International Journal of Andrology
سال: 1984
ISSN: 0105-6263,1365-2605
DOI: 10.1111/j.1365-2605.1984.tb00761.x