Results 111 to 120 of about 134,084 (212)

Tyrosine Phosphorylation Events in Mouse Sperm Capacitation

open access: yes, 2009
Mammalian sperm are not able to fertilize immediately upon ejaculation; they become fertilization-competent after undergoing changes in the female reproductive tract collectively termed capacitation.
Arcelay, Enid
core   +1 more source

Experimental data about Antioxidants inhibition during equine sperm capacitation

open access: yes
In vitro embryo production (IVP) is a highly demanded technique in the animal breeding industry. However, the conventional protocol based on in vitro fertilization (IVF) still shows low success rates in horses.
Gibb, Zamira   +5 more
core   +1 more source

Hyperactivation of human sperm by 4-Aminopyridine: key role for mobilisation of stored Ca2+ in the sperm neck [PDF]

open access: yes, 2010
Within the female reproductive tract mammalian sperm gradually develop hyperactivated motility, triggered by increased flagellar Ca2+ resulting in deep flagellar bends. Two sources of Ca2+ may contribute to the regulation of hyperactivation.
Costello, Sarah Mary
core   +2 more sources

Effect of Osteopontin on Bovine Sperm Capacitation.

open access: yes, 2007
We evaluated the effects of osteopontin (OPN) on bovine sperm capacitation in vitro. Frozen-thawed sperm from a bull previously tested for IVF were separated by Percoll and incubated in TALP medium without capacitating agents (control, N = 494) and in ...
Killian G.   +6 more
core  

Sperm competition and sperm length in shorebirds [PDF]

open access: yes, 1999
We investigated how sperm morphology varies across 16 species of shorebirds in the Scolopacidae, Charadriidae, and Jacanidae. Sperm were significantly longer in nonmonogamous than in socially monogamous species.
Briskie, J V, Johnson, D D P
core  

cAMP -dependent protein tyrosine phosphorylation during bovine sperm capacitation

open access: yes, 2000
Mammalian sperm capacitation, defined as an obligatory maturational process leading to the development of the fertilization-competent state, is regulated by a series of poorly understood molecular events. This study examines signaling pathways associated
Galantino-Homer, Hannah Laura
core  

Signaling mechanisms of mouse sperm capacitation

open access: yes, 2006
Thesis (Ph. D.)--University of Washington, 2006.Although successful meeting of sperm and egg is vital for continuation of life, critical gaps exist in our understanding of fertilization and events that prepare sperm for it.
Carlson, Anne Elizabeth
core  

Effects of preconception exposure to phthalates on mouse sperm capacitation parameters. [PDF]

open access: yesAndrology, 2023
Mohanty G   +8 more
europepmc   +1 more source

Role of oxidative stress and antioxidants in domestic and non-domestic cat spermatozoa [PDF]

open access: yes, 2010
Living cells, including spermatozoa, stored under aerobic conditions require oxygen to support their normal metabolism. Excessive levels of metabolites (reactive oxygen species; ROS) can cause cell damage or lipid peroxidation.
Thuwanut, Paweena
core  

Signaling Roleplay between Ion Channels during Mammalian Sperm Capacitation. [PDF]

open access: yesBiomedicines, 2023
Benko F   +3 more
europepmc   +1 more source

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