Results 21 to 30 of about 285,253 (302)

Post-Meiotic Intra-Testicular Sperm Senescence in a Wild Vertebrate [PDF]

open access: yes, 2012
There is growing interest in sperm senescence, both in its underlying mechanisms and evolutionary consequences, because it can impact the evolution of numerous life history traits. Previous studies have documented various types of sperm senescence, but
Richard H. Wagner   +16 more
core   +2 more sources

Reduced glutathione and cysteine hydrochloride on crossbred bull semen [PDF]

open access: yes, 2012
Over the last few years, good quality freezable semen was not utilized effectively due to less knowledge about the freezability of semen. One reason is the lack of sufficient antioxidants in the seminal plasma and semen extender.
P Perumal
core   +1 more source

Seawater carbonate chemistry and sperm motility of Tegillarca granosavia

open access: yes, 2021
Since the industrial revolution, massive amount of anthropogenic carbon dioxide (CO2) have been generated to elevate the atmospheric CO2 concentration. Some anthropogenic CO2 have been absorbed by the ocean to cause “ocean acidification” (OA).
Hu, Lihua   +5 more
core   +1 more source

Exploration of the association between obesity and semen quality in a 7630 male population. [PDF]

open access: yesPLoS ONE, 2015
This study aimed to explore the association between body mass index (BMI), other anthropometric indexes and semen quality in a general male population in Taiwan.
Chih-Wei Tsao   +5 more
doaj   +1 more source

Gene Expression and Protein Synthesis in Mitochondria Enhance the Duration of High-Speed Linear Motility in Boar Sperm

open access: yesFrontiers in Physiology, 2019
Sperm motility patterns are continuously changed after ejaculation to fertilization in the female tract. Hyperactivated motility is induced with high glucose medium in vitro or the oviduct fluids in vivo, whereas sperm maintain linear motility in the ...
Zhendong Zhu   +11 more
doaj   +1 more source

Mass Sperm Motility Is Correlated to Sperm Motility as Measured by Computer-Aided Sperm Analysis (CASA) Technology in Farmed Ostriches

open access: yesAnimals, 2022
Semen analyses have gained momentum in various livestock industries. However, in farmed ostriches, semen analysis is still in its experimental stage, and males are not screened for sperm quality before breeding.
Pfunzo T. Muvhali   +3 more
doaj   +1 more source

Sperm Motility Annotated Genes: Are They Associated with Impaired Fecundity? [PDF]

open access: yes, 2023
Sperm motility is a prerequisite for achieving pregnancy, and alterations in sperm motility, along with sperm count and morphology, are commonly observed in subfertile men.
Al Smadi, Mohammad A.   +5 more
core   +2 more sources

Motility enhancement of human spermatozoa using electrical stimulation in the nano-Ampere range with enzymatic biofuel cells.

open access: yesPLoS ONE, 2020
Sperm motility is a crucial factor for normal fertilisation that is partly supported by mitochondrial activity. Enzymatic biofuel cells (EBFCs) generate electric currents by an electron grade from anodic to cathodic electrodes in a culture media.
Tai Eun Shin   +11 more
doaj   +1 more source

Computerized Sperm Motility and Application of Sperm Cryopreservation [PDF]

open access: yesArchives of Andrology, 1988
An objective method for measuring sperm motion characteristics was developed on an Intellect 100 Quantel Image Analysis System suitable for various image cytometric applications. It provided overall analysis of percent motility (% MS) as well as individual and mean measurements of motion characteristics, including vigor characteristics such as ...
J, Auger, J P, Dadoune
openaire   +2 more sources

Energy metabolism in mammalian sperm motility [PDF]

open access: yes, 2022
Mammalian sperm, the only cells that achieve their purpose outside their organism of origin, have to swim vigorously within the female reproductive tract to reach an oocyte.
Amaral, A., Alexandra Amaral
core   +1 more source

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