Results 31 to 40 of about 2,059,461 (220)
Acrosome reaction is subfamily specific in sea star fertilization [PDF]
, 2006 In the fertilization process of sea stars, sperm is activated to go through the acrosome reaction before cell fusion. We focused on induction of the acrosome reaction as a key process in fertilization.
Matsumoto, Midori +3 more
core +1 more source
SNARE Complex Assembly Is Required for Human Sperm Acrosome Reaction [PDF]
, 2002 Exocytosis of the acrosome (the acrosome reaction) is a terminal morphological alteration that sperm must undergo prior to penetration of the extracellular coat of the egg. Ca2+ is an essential mediator of this regulated secretory event.
Mayorga, Luis S. +5 more
core +1 more source
Integrated proteomics identifies a dysfunctional acrosomal module associated with impaired acrosome reaction in asthenozoospermia [PDF]
Journal of Men's HealthBackground: Asthenozoospermia, a primary cause of male infertility, is characterized not only by reduced sperm motility, but also by functional impairments, particularly defects in the acrosome reaction.
Andu Zhu, Jie Zhu, Dongdong Jin
doaj +1 more source
Expression of TRPV1 as A Heat Sensitive Voltage-Dependent Ion Channel and Oxidative Stress in Sperm Samples of Infertile Men with Varicocele: A Case-Control Study [PDF]
Cell Journal, 2022 Objective: Transient receptor potential vanilloid 1 (TRPV1) is a heat-activated nonselective cation channel that playsimportant role in the spermatogenesis, capacitation, acrosome reaction and sperm/oocyte fusion.
Sahar Salahshouri +4 more
doaj +1 more source
EDC IMPACT: Chemical UV filters can affect human sperm function in a progesterone-like manner
Endocrine Connections, 2017 Human sperm cell function must be precisely regulated to achieve natural fertilization. Progesterone released by the cumulus cells surrounding the egg induces a Ca2+ influx into human sperm cells via the CatSper Ca2+-channel and thereby controls sperm ...
A Rehfeld +5 more
doaj +1 more source
Plasma membrane-Acrosome-Mitochondria
, 2019 Raw data of sperm plasma membrane, acrosome, mitochondria, and healthy sperm, and the results of statistical ...
Vui Nguyen (6833942)
core +1 more source
A mechanism for differential release of acrosomal enzymes during the acrosome reaction [PDF]
Biochemical Journal, 1991 To study the organization of fertilization enzymes in the sperm acrosome, we isolated and characterized two physicochemically distinct acrosomal fractions of guinea-pig spermatozoa. A soluble fraction contained the 25,000-Mr acrosomal autoantigen, AA1, and most of the acrosomal hyaluronidase and dipeptidyl peptidase II activity. A particulate fraction,
D M, Hardy +3 more
openaire +2 more sources
Biological Reviews, EarlyView.ABSTRACT Heat stress (HS) is an increasing threat to male reproductive health, disrupting spermatogenesis through complex and interdependent cellular responses within the seminiferous epithelium. Although excessive reactive oxygen species (ROS) production is a hallmark of HS, ROS also act as central regulators of cell fate decisions beyond their role ...
Ribrio Ivan Tavares Pereira Batista
wiley +1 more source
Reproductive Medicine and Biology, 2019 Purpose The direct effects of Lepidium meyenii (Maca) on sperm remain unclear. Herein, we examined the direct effect of Maca on in vitro fertilization. Methods We examined the fertilization rate in a mouse model and the rate of acrosome reaction in sperm
Yusuke Aoki +10 more
doaj +1 more source
Sperm capacitation and the acrosome reaction [PDF]
Human Reproduction, 1998 To achieve successful fertilization under normal circumstances in vivo, mammalian spermatozoa must first undergo capacitation and then the acrosome reaction, an exocytotic event that allows cells to penetrate the zona pellucida and fuse with the oocyte plasma membrane.
openaire +2 more sources