Results 61 to 70 of about 14,069,776 (341)
Effects of L-carnitine and L-acetyl-carnitine on testicular sperm motility and chromatin quality [PDF]
Iranian Journal of Reproductive Medicine, 2012 Background: Sperm cells extracted from testes (TESE) have poor chromatin quality and motility. Various substances are used in the laboratory to increase sperm motility and improve the ART outcomes; however, there are few research which considered ...
Elham Aliabadi +5 more
doaj
Sexual selection in a transparent worm : insights from fluorescent sperm [PDF]
, 2015 Sexual selection is a potent source of selection underlying the evolution of sexual dimorphism, reproductive strategies and mating systems. Although sexual selection was initially thought to occur exclusively at the pre-copulatory stage (e.g., contests ...
Marie-Orleach, Lucas
core +1 more source
The impact of percutaneous epididymal sperm aspiration (PESA) on sperm quality in mice
Reproduction and Fertility, 2023 In laboratory mice sperm quality is usually assessed in spermatozoa collected from the cauda epididymidis of freshly sacrificed males. Percutaneous epididymal sperm aspiration (PESA) is a non-terminal alternative that would allow repeated sperm collection for sperm quality assessment in living males.
Windhofer, Lisa +4 more
openaire +4 more sources
Biomolecules, 2020 To improve artificial insemination protocols in ovine species it is crucial to optimize sperm quality evaluation after preservation technologies. Emerging technologies based on novel biomolecules and related to redox balance and proteins involved in ...
Marta F. Riesco +7 more
semanticscholar +1 more source
Effects of temperature anomaly on sperm quality: A multi-center study of 33,234 men
HeliyonBackgrounds: Global fertility rates continue to decline and sperm quality is a prime factor affecting male fertility. Both extreme cold and heat have been demonstrated to be associated with decreased sperm quality, but no epidemiological studies have ...
Lina Xiao +15 more
doaj +1 more source
Theoretical influence of female mating status and remating propensity on male sperm allocation patterns [PDF]
, 2006 Engqvist L, Reinhold K. Theoretical influence of female mating status and remating propensity on male sperm allocation patterns. JOURNAL OF EVOLUTIONARY BIOLOGY.
Reinhold, Klaus +3 more
core +1 more source
DNA fragmentation index (DFI) as a measure of sperm quality and fertility in mice
Scientific Reports, 2020 Although thousands of genetically modified mouse strains have been cryopreserved by sperm freezing, the likelihood of cryorecovery success cannot be accurately predicted using conventional sperm parameters.
M. Li, K. C. K. Lloyd
semanticscholar +1 more source
Frontiers in Ecology and Evolution, 2017 Sperm viability (SV), the proportion of live sperm in a sample, is a widely applied measure of sperm quality but few studies test its robustness. At least three reasons make SV problematic as a surrogate for sperm quality. First, reviewing the ecological
Barbara A. Eckel +2 more
doaj +1 more source
Cryopreservation of common carp sperm [PDF]
, 2003 Experiments were carried out to investigate the effect of five extenders (sucrose, glucose, fructose, KCl and a saline carp sperm extender) and two cryoprotectants (dimethyl-sulfoxide (DMSO) and methanol) on the cryopreservation of common carp sperm ...
Urbányi, Béla +5 more
core +1 more source
Pitfalls in experiments testing predictions from sperm competition theory [PDF]
, 2005 Engqvist L, Reinhold K. Pitfalls in experiments testing predictions from sperm competition theory. Journal of Evolutionary Biology. 2005;18(1):116-123.As females of many species mate with more than one male, ejaculates often face competition from the ...
Reinhold, Klaus +3 more
core +1 more source