Results 51 to 60 of about 83,183 (339)
TULP2 deletion mice exhibit abnormal outer dense fiber structure and male infertility
Reproductive Medicine and Biology, 2022 Purpose Tulp2 (tubby‐like protein 2) is a member of the tubby protein family and expressed predominantly in mouse testis. Recently, it was reported that Tulp2 knockout (KO) mice exhibited disrupted sperm tail morphology; however, it remains to be ...
Yuki Oyama +5 more
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Two new free-living nematode species (Trefusiina: Trefusiidae) from the Chatham Rise crest, Southwest Pacific Ocean [PDF]
, 2013 Two new species of the family Trefusiidae, viz., Trefusia piperata sp. nov. and Trefusialaimus idrisi sp. nov., are described from the crest of the Chatham Rise, Southwest Pacific Ocean (350 m water depth).
Leduc, Daniel
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Speract induces calcium oscillations in the sperm tail [PDF]
The Journal of Cell Biology, 2003 Sea urchin sperm motility is modulated by sperm-activating peptides. One such peptide, speract, induces changes in intracellular free calcium concentration ([Ca2+]i). High resolution imaging of single sperm reveals that speract-induced changes in [Ca2+]i have a complex spatiotemporal structure.
Wood CD, Darszon A, Whitaker MJ
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Lensfree super-resolution holographic microscopy using wetting films on a chip. [PDF]
, 2011 We investigate the use of wetting films to significantly improve the imaging performance of lensfree pixel super-resolution on-chip microscopy, achieving < 1 µm spatial resolution over a large imaging area of ~24 mm(2).
Bishara, Waheb +2 more
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Rheotaxis facilitates upstream navigation of mammalian sperm cells [PDF]
, 2014 A major puzzle in biology is how mammalian sperm determine and maintain the correct swimming direction during the various phases of the sexual reproduction process.
Adolphi +37 more
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Morphometry of Boar Spermatozoa in Semen Stored at 17 °C—The Influence of the Staining Technique
Animals, 2022 The aim of the study was to assess the morphometry of sperm during storage of liquid boar semen at 17 °C. An attempt was also made to evaluate the suitability of three staining methods for assessment of boar sperm morphometry.
Dorota Szablicka +3 more
doaj +1 more source
International Journal of Occupational Medicine and Environmental Health, 2018 Some of the recent publications have reported a decline in semen quality in the last few decades. This phenomenon is associated with environmental factors, particularly with exposure to endocrine disrupting chemicals (EDCs).
Dorota Zamkowska +3 more
doaj +1 more source
Health Science Reports, 2021 Background and aims Motility and morphological defects of spermatozoa can cause male infertility. Sperm RNAs are related to sperm quality. They are considered to have clinical values as a biomarker for assessing sperm quality and fertility potential. The
Madiheh Mazaheri Moghaddam +6 more
doaj +1 more source
Evidence of the presence of calcium/calmodulin-dependent protein kinase IV in human sperm and its involvement in motility regulation [PDF]
, 2005 The mechanisms involved in the regulation of mammalian sperm motility are not well understood. Calcium ions (Ca(2+)) have been suggested to play a key role in the maintenance of motility; nevertheless, how Ca(2+) modulates this process has not yet been ...
Buffone, Mariano Gabriel +6 more
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KLC3 is involved in sperm tail midpiece formation and sperm function
Developmental Biology, 2012 Kinesin light chain 3 (KLC3) is the only known kinesin light chain expressed in post-meiotic male germ cells. We have reported that in rat spermatids KLC3 associates with outer dense fibers and mitochondrial sheath. KLC3 is able to bind to mitochondria in vitro and in vivo employing the conserved tetratrico-peptide repeat kinesin light chain motif. The
Zhang, Ying +5 more
openaire +2 more sources