Results 251 to 260 of about 65,346 (303)

Comprehensive Quantification of Oligoasthenozoospermia Induced by Obesity, Reproductive Toxicants, and Their Combination in Rat Models

Andrology, EarlyView.
ABSTRACT Background Oligoasthenozoospermia is a leading cause of male infertility and has been increasingly associated with the global surge in obesity and exposure to reproductive toxicants. Despite extensive research on each factor individually, their combined pathological effects remain poorly understood.
Yunlong Yao, Xi Zhang, Lingru Li, Yunzhi Zhang, Shuo Huang, Yulin Zong, Mingrui Li, Fufangyu Zhao, Linghui Zhu, Tianxing Li, Wenlong Sun, Mingyan Shao, Yanfei Zheng   +12 more
wiley   +1 more source

Parental Educational Attainment at Birth and Biomarkers of Male Fecundity: A Study From the Danish National Birth Cohort

Andrology, EarlyView.
ABSTRACT Background Low parental education is associated with poorer offspring health, but its influence on male fecundity remains unclear. Objective To study the association between parental educational attainment at birth and biomarkers of male fecundity in young men and to explore whether this association is mediated by maternal smoking in pregnancy
Anne Hjorth Thomsen, Anne Gaml‐Sørensen, Sandra Søgaard Tøttenborg, Onyebuchi A. Arah, Siri Eldevik Håberg, Mikko Myrskylä, Cecilia Høst Ramlau‐Hansen   +6 more
wiley   +1 more source

An Ecology of Sperm: Sperm Diversification by Natural Selection

Annual Review of Ecology, Evolution, and Systematics, 2015
Using basic ecological concepts, we introduce sperm ecology as a framework to stud sperm cells. First, we describe environmental effects on sperm and conclude that evolutionary and ecological research should not neglect the overwhelming evidence ...
Klaus Reinhardt, Ralph Dobler, Jessica K Abbott   +2 more
exaly   +3 more sources

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Machine learning for sperm selection

Nature Reviews Urology, 2021
Infertility rates and the number of couples seeking fertility care have increased worldwide over the past few decades. Over 2.5 million cycles of assisted reproductive technologies are being performed globally every year, but the success rate has remained at ~33%.
Jae Bem You, Christopher McCallum, Yihe Wang, Jason Riordon, Reza Nosrati, David Sinton   +5 more
openaire   +2 more sources

Sperm Selection Technology in ART

Seminars in Reproductive Medicine, 2021
AbstractIntracytoplasmic sperm injection (ICSI) is a commonly used in vitro fertilization technique. Selection of sperm for injection is currently done using subjective assessment of morphology, which may not accurately identify the best-quality sperm.
Catherine Martin, Emma Woodland
openaire   +2 more sources

Sperm head's birefringence: a new criterion for sperm selection

Fertility and Sterility, 2008
To investigate the characteristics of birefringence in human sperm heads and apply polarization microscopy for sperm selection at intracytoplasmic sperm injection (ICSI).Prospective randomized study.Reproductive Medicine Unit, Società Italiana Studi Medicina della Riproduzione, Bologna, Italy.A total of 112 male patients had birefringent sperm selected
Luca Gianaroli, M Cristina Magli, Giulia Collodel   +2 more
exaly   +5 more sources

Sperm competition games: sperm selection by females

Journal of Theoretical Biology, 2003
We 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

Microfluidics for sperm analysis and selection

Nature Reviews Urology, 2017
Infertility 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, Percival J, Graham, Biao, Zhang, Jason, Riordon, Alexander, Lagunov, Thomas G, Hannam, Carlos, Escobedo, Keith, Jarvi, David, Sinton   +8 more
openaire   +2 more sources

Sperm Selection: Effect on Sperm DNA Quality

2013
The 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, Graçiela Estela, Cognigni, Marco, Filicori   +2 more
openaire   +2 more sources

A biomimetic sperm selection device for routine sperm selection

Reproductive BioMedicine Online
Can 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, Dale M, Goss, Kathryn H, Gurner, Rebecca L, Kelley, Maria, Mazi, Fabrice K, De Bond, Jennifer, Lorimer, Fabrizzio, Horta, Farin Y, Parast, David K, Gardner, Reza, Nosrati, Majid E, Warkiani   +11 more
exaly   +3 more sources