Results 21 to 30 of about 32,366 (262)
Formation and function of sperm tail structures in association with sperm motility defects† [PDF]
Biology of Reproduction, 2017 Male infertility is an increasing problem partly due to inherited genetic variations. Mutations in genes involved in formation of the sperm tail cause motility defects and thus male infertility. Therefore, it is crucial to understand the protein networks required for sperm differentiation.
Lehti, Mari S., Sironen, Anu
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Qualitative defects with normal sperm counts in a patient attending infertility clinic
Indian Journal of Pathology and Microbiology, 2018 Background: Sperm morphology is an important qualitative parameter in semen analysis. Aim: To assess qualitative defects in the semen with normal sperm counts.
Rachna Goyal +3 more
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Essential Role of CFAP53 in Sperm Flagellum Biogenesis
Frontiers in Cell and Developmental Biology, 2021 The sperm flagellum is essential for male fertility. Despite vigorous research progress toward understanding the pathogenesis of flagellum-related diseases, much remains unknown about the mechanisms underlying the flagellum biogenesis itself.
Bingbing Wu +33 more
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PLoS Genetics, 2020 Approximately 2-15% of couples experience infertility, and around half of these cases are attributed to male infertility. We previously identified TBC1D21 as a sterility-related RabGAP gene derived from infertile men.
Ya-Yun Wang +7 more
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Irradiation of Sperm Tails by Laser Microbeam* [PDF]
Journal of Experimental Biology, 1969 ABSTRACT Sea-urchin and starfish sperm tails were irradiated at pre-selected points along the flagellum and at pre-selected phases of the beat cycle by means of a pulsed ruby laser microbeam. Multiple-exposure dark-field photomicrographs were taken immediately before and after irradiation.
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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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Sperm tail axoneme alterations in the Wobbler mouse [PDF]
Reproduction, 1980 Summary. In Wobbler mice (neurological mutants affected with progressive motor neurone degenerative disease) a defect in sperm tail mobility and axonemal geometry was observed. Similar but less extensive abnormalities were seen in the ciliary axonemes of the ductuli efferentes.
Leestma, J E, Sepsenwol, S
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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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Epididymal Sperm Characteristics of Iranian Short-Haired Cats [PDF]
Veterinary and Comparative Biomedical ResearchThe aim of this study was to assess epididymal sperm parameters in Iranian short-haired cats. The study examined the epididymal sperm quality in seven Iranian short-haired cats (aged 1–4 years) undergoing routine orchiectomy at the Veterinary Hospital of
Ahmad Reza Borzouei +2 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
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