Results 51 to 60 of about 216,536 (392)
Inhibition and relaxation of sea urchin sperm flagella by vanadate [PDF]
, 1980 Direct measurements of the stiffness (elastic bending resistance) of demembranated sera urchin sperm flagella were made in the presence of MgATP2- and vanadate.
Okuno, Makoto
core +3 more sources
Motilitas dan Viabilitas Spermatozoa Sapi Rambon di Desa Kemiren Banyuwangi
Jurnal Medik Veteriner, 2018 Sapi Rambon merupakan salah satu sapi lokal Indonesia. Tahun 2017 populasi sapi Rambon mengalami penurunan. Salah satu upaya pelestarian sapi lokal adalah melalui peningkatan populasi sapi dan inseminasi buatan.
Zeni Prastika +4 more
doaj +1 more source
AMP-activated kinase AMPK is expressed in boar spermatozoa and regulates motility. [PDF]
PLoS ONE, 2012 The main functions of spermatozoa required for fertilization are dependent on the energy status and metabolism. AMP-activated kinase, AMPK, acts a sensor and regulator of cell metabolism. As AMPK studies have been focused on somatic cells, our aim was to
Ana Hurtado de Llera +4 more
doaj +1 more source
Species difference in the expression of Fas and Fas ligand in mature mammalian spermatozoa
Czech Journal of Animal Science, 2017 Although it has been proposed that the Fas and Fas ligand (FasL) may protect ejaculated spermatozoa against apoptosis induced by lipoperoxidative damage and against lymphocytes present in the female genital tract, studies reported conflicting results on ...
Youwei Li +7 more
doaj +1 more source
PLoS ONE, 2021 The aim of this study was to assess the dose- and time-dependent in vitro effects of ferrous sulphate (FeSO4.7H2O) on the motility parameters, viability, structural and functional activity of bovine spermatozoa.
Zuzana Knazicka +9 more
doaj +1 more source
Bisphenol-A Affects Male Fertility via Fertility-related Proteins in Spermatozoa
Scientific Reports, 2015 The xenoestrogen bisphenol-A (BPA) is a widespread environmental contaminant that has been studied for its impact on male fertility in several species of animals and humans.
M. S. Rahman +5 more
semanticscholar +1 more source
Mitochondria in teleost spermatozoa
Mitochondrion, 2017 There is an extraordinary diversity of reproductive modes in teleost and this variability is related to the phylogenetic relationships and adaption to very different biotopes. As in all vertebrates, sperm is produced as the end product of the process of spermatogenesis, and regarding teleost the spermatozoa lack an acrosome in almost all species and ...
Patricio Ulloa-Rodríguez +5 more
openaire +5 more sources
Expression of a catalytically inactive mutant form of glutathione peroxidase 4 (Gpx4) confers a dominant-negative effect in male fertility. [PDF]
, 2015 The selenoenzyme Gpx4 is essential for early embryogenesis and cell viability for its unique function to prevent phospholipid oxidation. Recently, the cytosolic form of Gpx4 was identified as an upstream regulator of a novel form of non-apoptotic cell ...
Aichler, M +12 more
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Oxidative phosphorylation versus glycolysis: what fuel do spermatozoa use?
Asian Journal of Andrology, 2014 Spermatozoa are highly specialized cells. Adenosine triphosphate (ATP), which provides the energy for supporting the key functions of the spermatozoa, is formed by 2 metabolic pathways, namely glycolysis and oxidative phosphorylation (OXPHOS).
S. D. du Plessis +3 more
semanticscholar +1 more source
The Senescence of Spermatozoa, II [PDF]
Journal of Experimental Biology, 1928 ABSTRACT In a recent paper (Gray, 1928 a) the progressive loss of activity of a suspension of Echinus sperm was considered from two points of view; firstly, as a process of spontaneous and irreversible depletion of available energy and secondly, as a process of auto-intoxication whereby the products of activity inhibit the essential ...
openaire +2 more sources