Sperm Chromatin 2011
DOI: 10.1007/978-1-4419-6857-9_30
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Antioxidants and Sperm DNA Damage

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Cited by 4 publications
(3 citation statements)
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“…The remaining cytoplasm from intercellular bridges, called the cytoplasmic droplet, is lost during sperm transit through the epididymis ( Cooper and Yeung, 2003 ). During spermiogenesis, the sequential replacement of histones by transitional proteins and then by protamines within sperm chromatin triggers genome condensation ( Zini and Agarwal, 2011 ; Gadea et al, 2013 ). The acrosome, located at the top of the head, contains specific enzymes that promote specific functions trailing sperm capacitation and acrosome reaction: (1) exposure of acrosome zona pellucida binding proteins during sperm capacitation; (2) sperm ability to cross cumulus cells that surrounds the oocytes, (3) sperm binding to zona pellucida and acrosome reaction, and (4) migration of IZUMO1 protein from the outer acrosomal membrane to the equatorial segment of sperm surface to ensure its binding to JUNO receptor on the oocyte ( Satouh et al, 2012 ; Bianchi et al, 2014 ).…”
Section: “Healthy Sperm” Concept: Structural Morpho-functional and Imentioning
confidence: 99%
“…The remaining cytoplasm from intercellular bridges, called the cytoplasmic droplet, is lost during sperm transit through the epididymis ( Cooper and Yeung, 2003 ). During spermiogenesis, the sequential replacement of histones by transitional proteins and then by protamines within sperm chromatin triggers genome condensation ( Zini and Agarwal, 2011 ; Gadea et al, 2013 ). The acrosome, located at the top of the head, contains specific enzymes that promote specific functions trailing sperm capacitation and acrosome reaction: (1) exposure of acrosome zona pellucida binding proteins during sperm capacitation; (2) sperm ability to cross cumulus cells that surrounds the oocytes, (3) sperm binding to zona pellucida and acrosome reaction, and (4) migration of IZUMO1 protein from the outer acrosomal membrane to the equatorial segment of sperm surface to ensure its binding to JUNO receptor on the oocyte ( Satouh et al, 2012 ; Bianchi et al, 2014 ).…”
Section: “Healthy Sperm” Concept: Structural Morpho-functional and Imentioning
confidence: 99%
“…Followed by the formation of the sperm tail, mature spermatozoa get released from Sertoli cells into the lumen of the seminiferous tubule in a process called spermiation [9]. During spermiation, residual bodies are phagocytized by the Sertoli cells [46]. This process involves removal of specialized adhesion structures and remodeling of the spermatid head and cytoplasm [9].…”
Section: Role Of Microtubules In Male Fertilitymentioning
confidence: 99%
“…Para tanto, o DNA dos espermatozoides mamíferos é considerado o DNA mais compactado das células eucariotas (WARD;COFFEY, 1991). As protaminas (proteínas nucleares) substituem as histonas durante o processo de espermatogênese e são responsáveis por este alto grau de compactaçãoAGARWAL, 2011). Esta troca permite que todo conteúdo do DNA paterno fique protegido na pequena estrutura que é a cabeça do espermatozoide, seja armazenado no trato reprodutivo masculino e transportado pelo trato feminino, momento no qual ele fica mais suscetível aos danos, como, por exemplo, a oxidação causada pelos radicais livres.…”
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