Results 31 to 40 of about 24,732 (236)

Evaluation of rooster semen quality using CBB dye based staining method

open access: yesJournal of Animal Reproduction and Biotechnology, 2022
The acrosome cap allows sperm to penetrate the egg membrane and produce male pronuclei within female chicken eggs, facilitating successful fertilization.
Sung Woo Kim   +4 more
doaj   +1 more source

The biochemistry of the acrosome reaction [PDF]

open access: yesMolecular Human Reproduction, 1997
The binding of the spermatozoon to the oocyte zona pellucida (ZP) occurs via specific receptors localized over the anterior head region of the spermatozoon. Zona pellucida binding stimulates the spermatozoa to undergo the acrosome reaction resulting in the release of hydrolytic enzymes and in the exposure of new membrane domains, both of which are ...
H, Breitbart, B, Spungin
openaire   +2 more sources

Effectiveness of Adding Different Sucrose in Tris-Egg Yolk Diluent on the Sperm Fertility of Sexing Swamp Buffalo (Bubalus bubalis)

open access: yesJournal of Tropical Life Science, 2023
Spermatozoa sexing requires a diluent that can protect and provide an optimal environment to maintain the quality of spermatozoa. This study targets to determine the effectiveness of adding sucrose to tris-egg yolk diluent on the sperm quality of the ...
Yendraliza Yendraliza   +6 more
doaj   +1 more source

Genes Regulating Spermatogenesis and Sperm Function Associated With Rare Disorders

open access: yesFrontiers in Cell and Developmental Biology, 2021
Spermatogenesis is a cell differentiation process that ensures the production of fertilizing sperm, which ultimately fuse with an egg to form a zygote.
Emma Linn   +4 more
doaj   +1 more source

Relationship between acrosome integrity changes and in vitro fertilising ability of bovine spermatozoa

open access: yesVeterinární Medicína, 2015
This study was designed to investigate the characteristics of acrosomal changes during capacitation of bovine spermatozoa in relationship to in vitro fertility of individual bulls.
Z. Reckova   +3 more
doaj   +1 more source

Ubiquitin Ligase Nrdp1 Controls Autophagy-Associated Acrosome Biogenesis and Mitochondrial Arrangement during Spermiogenesis

open access: yesCells, 2023
Autophagy is critical to acrosome biogenesis and mitochondrial quality control, but the underlying mechanisms remain unclear. The ubiquitin ligase Nrdp1/RNF41 promotes ubiquitination of the mitophagy-associated Parkin and interacts with the pro ...
Zi-Yu Luo   +4 more
doaj   +1 more source

Condensed Mitochondria Assemble Into the Acrosomal Matrix During Spermiogenesis

open access: yesFrontiers in Cell and Developmental Biology, 2022
Mammalian spermatogenesis is associated with the transient appearance of condensed mitochondria, a singularity of germ cells with unknown function.
Mindong Ren   +11 more
doaj   +1 more source

An Overview of The Globozoospermia as A Multigenic Identified Syndrome [PDF]

open access: yesInternational Journal of Fertility and Sterility, 2019
Acrosome plays an integral role during fertilization and its absence in individuals with globozoospermia leads to failure of in vitro fertilization (IVF) and oocyte activation post-intracytoplasmic sperm injection (ICSI).
Parastoo Modarres   +2 more
doaj   +1 more source

Ubiquitination Regulates the Morphogenesis and Function of Sperm Organelles

open access: yesCells, 2013
It is now understood that protein ubiquitination has diverse cellular functions in eukaryotes. The molecular mechanism and physiological significance of ubiquitin-mediated processes have been extensively studied in yeast, Drosophila and mammalian somatic
Nobuhiro Nakamura
doaj   +1 more source

A mechanism for differential release of acrosomal enzymes during the acrosome reaction [PDF]

open access: yesBiochemical 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

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