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CatSper channel, sperm function and male fertility [PDF]
Reproductive BioMedicine Online, 2015 A number of physiological events, such as sperm hyperactivation, chemotaxis towards the egg, capacitation and acrosome reaction, are triggered by activation of sperm ion channels in response to a diverse range of chemical cues. Cation channel of sperm (CatSper), a sperm-specific ion channel, is unique in orchestrating the events for fertilization, and ...
Singh Rajender
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CatSper channels in sea urchin sperm
Cell Calcium, 2021Sea urchin sperm swimming is regulated by speract, a decapeptide released from egg jelly that induces chemotaxis and triggers membrane potential (Em) changes, intracellular increases in cyclic nucleotides (cGMP, cAMP), pH (pHi) and calcium concentration ([Ca2+]i).
Verónica, Loyo-Celis +3 more
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A bioinformatics analysis of the CatSper channel in the class Actinopterygii
Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 2022The regulation of sperm motility is controlled by several variables, including mainly ion concentrations. In fish, Ca2+ concentrations play an important role in the regulation of sperm motility, and several reports highlight the importance of certain Ca2+ channels in the regulation of this cell function. CatSper is a calcium channel scarcely studied in
Jorge F, Beltrán +7 more
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Molecular basis of the higher-order assembly of CatSper
Proceedings of the National Academy of Sciences of the United States of AmericaCatSper serves as the primary Ca 2+ entry pathway in the principal piece of sperm flagellum and is crucial for sperm motility and fertility. Sperm lacking functional CatSper channels fail to undergo hyperactivation during fertilization, leading to complete male infertility.
Shiyi Lin, Hang Kang, Xuhui Zeng
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Science's STKE, 2001
Sperm undergo a process called capacitance, part of which involves increasing their motility in the female reproductive tract. Ren et al. have found and characterized a new Ca 2+ channel expressed in sperm tails, termed CatSper, that is required for sperm motility and male fertility. CatSper
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Sperm undergo a process called capacitance, part of which involves increasing their motility in the female reproductive tract. Ren et al. have found and characterized a new Ca 2+ channel expressed in sperm tails, termed CatSper, that is required for sperm motility and male fertility. CatSper
openaire +2 more sources
2013
In 2001, two groups independently reported different components of a novel Ca2+ channel named CatSper, which is expressed only in the testis and localized in the sperm flagellum. Now, we know that CatSper is a sperm-specific Ca2+ channel composed of four distinct pore-forming subunits accompanied with, at least, three auxiliary subunits. Although there
Takuya Nishigaki +2 more
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In 2001, two groups independently reported different components of a novel Ca2+ channel named CatSper, which is expressed only in the testis and localized in the sperm flagellum. Now, we know that CatSper is a sperm-specific Ca2+ channel composed of four distinct pore-forming subunits accompanied with, at least, three auxiliary subunits. Although there
Takuya Nishigaki +2 more
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2021
Background: CatSper is a multi-subunit sperm-specific calcium channel that mediates the progesterone-induced increase in intracellular calcium. Evidence from CatSper subunit knock-out mouse models implicates it as essential for sperm fertilisation competence.
S. G. Brown +4 more
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Background: CatSper is a multi-subunit sperm-specific calcium channel that mediates the progesterone-induced increase in intracellular calcium. Evidence from CatSper subunit knock-out mouse models implicates it as essential for sperm fertilisation competence.
S. G. Brown +4 more
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Finasteride interferes with prostaglandin-induced CatSper signalling in human sperm
Reproduction, 2021Abstract Ca2+ signalling controls human sperm functions necessary for successful fertilization. Multiple endocrine-disrupting chemicals have been found to activate the CatSper Ca2+ channel and thereby interfering with Ca2+ signalling in human sperm. Finasteride is prescribed to men in the fertile age to treat hair loss and its use has
Michala Rosa Birch +3 more
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A Model of CatSper Channel Mediated Calcium Dynamics in Mammalian Spermatozoa
Bulletin of Mathematical Biology, 2010CatSpers are calcium (Ca(2+)) channels that are located along the principal piece of mammalian sperm flagella and are directly linked to sperm motility and hyperactivation. It has been observed that Ca(2+) entry through CatSper channels triggers a tail to head Ca(2+) propagation in mouse sperm, as well as a sustained increase of Ca(2+) in the head ...
Olson, Sarah D. +2 more
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[CatSper and sperm hyperactivation].
Zhonghua nan ke xue = National journal of andrology, 2007Elevation of sperm Ca2+ seems to be responsible for an asymmetric form of motility called hyperactivation, which is first seen near the time of fertilization. CatSper family proteins are putative cation channels expressed exclusively in the membranes of the sperm flagellum.
Li-juan, Kong +2 more
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