Results 61 to 70 of about 367,767 (212)

Heat Stress Reduces Sperm Motility via Activation of Glycogen Synthase Kinase-3α and Inhibition of Mitochondrial Protein Import

open access: yesFrontiers in Physiology, 2017
The adverse effects of high environmental temperature exposure on animal reproductive functions have been concerned for many decades. However, the molecular basis of heat stress (HS)-induced decrease of sperm motility has not been entirely elucidated. We
Yabin Gong   +5 more
semanticscholar   +1 more source

Relationship between sperm progressive motility and DNA integrity in fertile and infertile men

open access: yesMiddle East Fertility Society Journal, 2018
Background: Progressive sperm motility was found to be predictive for in vitro and in vivo fertilization. There has been an increase in the literature of studies investigating whether DNA fragmentation could be associated with other semen parameters ...
Salah Elbashir   +5 more
doaj   +1 more source

Effects of Diethylstilbestrol Administration on Sperm Motility and Reproductive Function in Male Japanese Quail (Coturnix japonica)

open access: yesThe Journal of Poultry Science, 2002
The present study was undertaken to evaluating the effects of diethylstilbestrol (DES) on sperm motility and reproductive function in male Japanese quail. To do so, we have identified the method that ensures maximal quail sperm motility, i.e.
Teruo Maeda, Yukinori Yoshimura
doaj   +1 more source

Leucine mediates autophagosome-lysosome fusion and improves sperm motility by activating the PI3K/Akt pathway

open access: yesOncoTarget, 2017
Amino acid supplementation is an efficient and effective strategy to increase sperm quality. In our research, a comparative study was conducted to screen free amino acids to improve sperm motility, and we found that leucine was the most efficient one ...
Jin Zhang   +8 more
semanticscholar   +1 more source

Molecular approaches based on investigating the therapeutic benefits of Moringa oleifera: Insights into biochemical and spermatological and metabolites studies

open access: yesAspects of Molecular Medicine
This study aimed to investigate the potential of Moringa oleifera extract, an herbal treatment known to support male reproductive function, in improving sperm motility. Adult male guinea pigs were divided into four groups (n = 5 per group).
Sudha Sankar   +3 more
doaj   +1 more source

Physical and morphological characteristics of Kankrej bull semen

open access: yesVeterinary World, 2013
Aim: Present investigation was carried out to study the physical characteristics of Kankrej bulls semen by evaluation of various semen parameters from neat semen and at various stages of semen preservation. Materials and Methods: A total of 60 ejaculates,
Bharatkumar R. Patel, G. M. Siddiquee
doaj   +1 more source

Evidence for Rapid Oxidative Phosphorylation and Lactate Fermentation in Motile Human Sperm by Hyperpolarized 13C Magnetic Resonance Spectroscopy

open access: yesScientific Reports, 2017
Poor sperm motility is a common cause of male infertility for which there are no empirical therapies. Sperm motility is powered by adenosine triphosphate but the relative importance of lactate fermentation and Oxidative Phosphorylation (OxPhos) is ...
Steven Reynolds   +4 more
doaj   +1 more source

Signaling Enzymes Required for Sperm Maturation and Fertilization in Mammals

open access: yesFrontiers in Cell and Developmental Biology, 2019
In mammals, motility and fertilizing ability of spermatozoa develop during their passage through the epididymis. After ejaculation, sperm undergo capacitation and hyperactivation in the female reproductive tract – a motility transition that is required ...
Souvik Dey   +2 more
doaj   +1 more source

Sperm motility and morphology changes in rats exposed to cadmium and diazinon

open access: yesReproductive Biology and Endocrinology, 2016
BackgroundHumans are ubiquitously exposed to multiple environmental contaminants. Consequences of combined action on the reproductive system remain unknown.
M. Adamkovicova   +7 more
semanticscholar   +1 more source

Analysis of epididymal sperm from Korean native bull (Hanwoo) aged at 8 and 15 months before freezing and after thawing

open access: yesJournal of Animal Reproduction and Biotechnology, 2016
The recovery of epididymal sperm in animals is considered as one of the important tools to preserve high value or endangered species. However, there are no appropriate castrating indicators such as months of age in bull, sperm morphology, and motility ...
Sung-Sik Kang   +11 more
doaj   +1 more source

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