Results 51 to 60 of about 370,507 (192)

Patch clamp studies of human sperm under physiological ionic conditions reveal three functionally and pharmacologically distinct cation channels [PDF]

open access: yes, 2014
Whilst fertilizing capacity depends upon a K+ conductance G? that allows the spermatozoon membrane potential Vm to be held at a negative value, the characteristics of this conductance in human sperm are virtually unknown.
Barratt, C.L.R.; id_orcid   +8 more
core   +1 more source

Effect of serum antioxidant levels on sperm function in infertile male

open access: yesMiddle East Fertility Society Journal, 2018
Antioxidant and reactive oxygen species (ROS) has been implicated in male infertility. Antioxidants are compounds which scavenge formation or oppose of the actions ROS.
Ayad F. Palani
doaj   +1 more source

Sexual selection in a transparent worm : insights from fluorescent sperm [PDF]

open access: yes, 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

Glutathione S-transferase Mu 3 is associated to in vivo fertility, but not sperm quality, in bovine

open access: yesAnimal, 2022
In the dairy breeding industry, pregnancy of dairy cows is essential to initiate milk production, so that high fertility rates are required to increase their productivity.
Ferran Garriga   +6 more
doaj   +1 more source

Dark side of the epididymis: tails of sperm maturation [PDF]

open access: yesAndrology, 2019
AbstractBackgroundThe Hermes body (HB) previously called the cytoplasmic droplet is a focal distension of the flagellar cytoplasm of epididymal spermatozoa consisting mainly of isolated flattened Golgi cisternae.ObjectiveTo define a functional role for the HB of epididymal spermatozoa.MethodsIsolated fractions of HBs of epididymal spermatozoa were ...
L. Hermo   +4 more
openaire   +2 more sources

CCDC113 stabilizes sperm axoneme and head-tail coupling apparatus to ensure male fertility

open access: yeseLife
The structural integrity of the sperm is crucial for male fertility, defects in sperm head-tail linkage and flagellar axoneme are associated with acephalic spermatozoa syndrome (ASS) and the multiple morphological abnormalities of the sperm flagella ...
Bingbing Wu   +10 more
doaj   +1 more source

Essential role for SUN5 in anchoring sperm head to the tail

open access: yeseLife, 2017
SUN (Sad1 and UNC84 domain containing)-domain proteins are reported to reside on the nuclear membrane playing distinct roles in nuclear dynamics. SUN5 is a new member of the SUN family, with little knowledge regarding its function.
Yongliang Shang   +18 more
doaj   +1 more source

EMPLOYMENT OF THE HYPO-OSMOTIC SWELLING TEST TO EVALUATE FUNCTIONAL INTEGRITY OF THE WASHED BUFFALO SPERMATOZOAL MEMBRANE [PDF]

open access: yesAssiut Veterinary Medical Journal, 2006
Twelve buffalo bulls of 3-5 years of age and 400 to 500 kg live body weights were used in the present study. The experimental work was carried out to establish the optimum condition of osmotic pressure using lactose-Na-citrate solution at different ...
M.A. EL-HARAIRY   +3 more
doaj   +1 more source

EFFECT OF GONADOTROPIN RELEASING HORMONE ON SEMEN CHARACTERISTICS IN NILI-RAVI BUFFALO BULLS [PDF]

open access: yesPakistan Veterinary Journal, 2007
The study was aimed at determining the effect of gonadotropin releasing hormone (GnRH) on semen characteristics in two Nili-Ravi buffalo bulls. The study was conducted in two phases.
M. SAJJAD, S. ALI, S. AKHTER AND N. ULLAH1
doaj  

Genetic variance and genotype reaction norms in response to larval food manipulation for a trait important in scorpionfly sperm competition. [PDF]

open access: yes, 2008
Engqvist L. Genetic variance and genotype reaction norms in response to larval food manipulation for a trait important in scorpionfly sperm competition. Functional Ecology. 2008;22(1):070915213639001-???Sperm competition is an important attribute of many
L. Engqvist   +1 more
core   +1 more source

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