Results 91 to 100 of about 2,059,461 (220)
Peroxiredoxin 4 Involved in Spermatogenesis by Affecting Oxidative Stress and Ferroptosis
Andrology, Volume 14, Issue 7, Page 2329-2346, October 2026.ABSTRACT Background The main functions of testes are sperm production and androgen secretion in testicular befitting microenvironment. Excessive level of the reactive oxygen species (ROS) from metabolism and cellular events can lead to oxidative stress (OS) and ferroptosis, which injure the functions of mitochondria and endoplasmic reticulum (ER) of ...
Shuning Yuan +10 more
wiley +1 more source
Genistein\u27s Effect on Acrosome Reaction of Ram Sperm
, 2011 Capacitation and acrosome reaction are important processes that sperm cells must undergo in the female reproductive tract in order for fertilization of the ova to occur. Genistein, a phytoestrogen, has been shown to inhibit protein tyrosine kinase (PTK)
Gerecke, Samantha L.
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Induction of the acrosome reaction in bull spermatozoa with plasmin
, 2003 Proteolytic enzymes appear to have an essential role in multiple phases of mammalian fertilization. Plasmin, the active enzyme of the plasminogen activation system that stimulates fibrinolysis and proteolysis has a less well-documented role in ...
Chapman, D. A. +2 more
core +1 more source
Siriraj Medical Journal, 2003 The aim of this study was to compare thepercentages of sperm with an acrosome reaction between those with and without calcium ionophore A23187 induction after two-layer Percoll gradient separation.
Roungsin Choavaratana +3 more
doaj
Testicular Biopsies in Adolescent and Adult Andrological Patients: The EAA Clinical Guidelines
Andrology, Volume 14, Issue 7, Page 1906-1928, October 2026.ABSTRACT Background Histological evaluation of testicular tissue is central to the assessment of infertile men, particularly those at an increased risk of testicular germ cell tumors (TGCT). Traditionally, testicular biopsies have been used primarily for diagnostic purposes, such as the detection of germ cell neoplasia in situ (GCNIS). With advances in
Lise Aksglaede +11 more
wiley +1 more source
Zona pellucida mediated acrosome reaction and sperm morphology
, 1997 Sperm samples from 29 men randomly selected from the andrology laboratory, were used to evaluate acrosome reaction response to solubilized human zona pellucida. Capacitated sperm samples were exposed to a solution containing 2 zona pellucidae (ZP) per μl
Habenicht U.-F. +4 more
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Seminal Extracellular Vesicles as Molecular Modulators of Male Reproductive Function
Reproduction in Domestic Animals, Volume 61, Issue S3, October 2026.ABSTRACT Extracellular vesicles (sEVs) contained in seminal plasma (SP) maintain, in concert with free SP‐components (proteins, hormones, cytokines, metabolites and antioxidants) under an endocrine umbrella the functional in vivo homeostasis of ejaculated spermatozoa. The sEVs define a generic mixture of nanovesicles delivered by male epithelial cells,
Heriberto Rodriguez‐Martinez +3 more
wiley +1 more source
Reproduction in Domestic Animals, Volume 61, Issue S3, October 2026.ABSTRACT Seminal extracellular vesicles (sEVs) have been proposed as modulators of sperm function, but their exact role remains unclear. Most studies use ejaculated sperm for clarification. This approach has limitations; nevertheless, as ejaculated sperm have already been exposed to their own native sEVs, which hinders the assessment of their specific ...
Patricia Panales +7 more
wiley +1 more source
Significance of the acrosome reaction and sperm agglutinating antibodies in human semen. acrosome RE
, 2003 We commpared results of the acrosome reaction and sperm agglutinating antibodies in human semen ...
Pavlásek, J.
core
Acrosome Reaction in Sperm of the Frog, Xenopus laevis: Its Detection and Induction by Oviductal Pars Recta Secretion [PDF]
, 2002 Previous electron microscopic observations have shown that the acrosome of the sperm of the frog, Xenopus laevis, comprises a membrane-bounded vesicle covering the anterior-most position of the head.
Yoshizaki, Norio +5 more
core +1 more source