Results 211 to 220 of about 62,614 (258)
Some of the next articles are maybe not open access.
Sperm competition games: sperm selection by females
Journal of Theoretical Biology, 2003We analyse a co-evolutionary sexual conflict game, in which males compete for fertilizations (sperm competition) and females operate sperm selection against unfavourable ejaculates (cryptic female choice). For simplicity, each female mates with two males per reproductive event, and the competing ejaculates are of two types, favourable (having high ...
M A, Ball, G A, Parker
openaire +2 more sources
A biomimetic sperm selection device for routine sperm selection
Reproductive BioMedicine OnlineCan a biomimetic microfluidic sperm sorter isolate motile sperm while minimizing DNA damage in comparison with density gradient centrifugation (DGC)?This was a two-phase study of 61 men, consisting of a proof-of-concept study with 21 donated semen samples in a university research laboratory, followed by a diagnostic andrology study with 40 consenting ...
Steven A, Vasilescu +11 more
exaly +3 more sources
Microfluidics for sperm analysis and selection
Nature Reviews Urology, 2017Infertility is a growing global health issue with far-reaching socioeconomic implications. A downward trend in male fertility highlights the acute need for affordable and accessible diagnosis and treatment. Assisted reproductive technologies are effective in treating male infertility, but their success rate has plateaued at ∼33% per cycle.
Reza, Nosrati +8 more
openaire +2 more sources
Sperm Selection: Effect on Sperm DNA Quality
2013The selection of spermatozoa without DNA fragmentation and chromosomal diseases prior to assisted reproductive techniques helps to optimize the outcome of the treatment; in particular, sperm selection prior to in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI) is crucial.
Lodovico, Parmegiani +2 more
openaire +2 more sources
Effect of sperm storage and selection techniques on sperm parameters
Systems Biology in Reproductive Medicine, 2014Sperm cryopreservation preserves the fertility of cancer patients undergoing chemotherapy, ensures sperm are available at the time of oocyte retrieval in assisted reproductive technology (ART) procedures and avoids the need for repeated sperm extraction surgeries in azoospermic patients.
Rakesh, Sharma +3 more
openaire +2 more sources
Sperm Preparation Techniques and Advanced Sperm Selection for Intracytoplasmic Sperm Injection
2023Despite years of research, numerous questions persist regarding the most effective sperm selection techniques. Frequently, new methods have gained popularity without thorough, extensive trials demonstrating their benefits. It is evident that there is no universally applicable solution, and it remains uncertain whether any of those techniques are ...
Ozkavukcu, Sinan +2 more
openaire +2 more sources
Sperm Processing and Selection
2020Assisted reproductive technology (ART) use sperm sorting methods to select viable sperm from semen samples. Conventional sperm sorting techniques currently use swim-up and density gradient centrifugation. These methods use multiple centrifugation steps, which have been shown to generate reactive oxygen species (ROS) that decrease DNA integrity and ...
Rakesh Sharma, Ashok Agarwal
openaire +1 more source
2020
With advances in assisted reproduction techniques, the degree of demand on the male gamete has decreased to such a level that the role of the sperm has been reduced to a mere packet of DNA to be released into the cytoplasm of the oocyte. Now, we know that regardless of appearance, this package may contain unpleasant surprises such as sperm DNA damage ...
Hamilton de Martin +2 more
openaire +1 more source
With advances in assisted reproduction techniques, the degree of demand on the male gamete has decreased to such a level that the role of the sperm has been reduced to a mere packet of DNA to be released into the cytoplasm of the oocyte. Now, we know that regardless of appearance, this package may contain unpleasant surprises such as sperm DNA damage ...
Hamilton de Martin +2 more
openaire +1 more source
Sperm Processing and Selection
2012The application of assisted reproductive techniques (ART) has provided help to many men seeking to father a child, although the current success rates of these procedures remain suboptimal. Since raw semen cannot be used in most ART, a workup of the ejaculate is needed to extract those sperm that are capable to fertilize the egg.
Sonja Grunewald, Uwe Paasch
openaire +1 more source
Artificial Insemination with Husband'S Sperm (Aih): Techniques for Sperm Selection
Archives of Andrology, 1989Artificial insemination with husband's sperm (AIH) attempts to treat infertile couples by solving their particular infertility problems. This review is concerned with detailing and evaluating the experiences of different authors with AIH in infertile couples, types of insemination, and indications for insemination, with emphasis on techniques for sperm
M, Pardo, N, Bancells
openaire +2 more sources