Results 61 to 70 of about 5,280,557 (249)
Biosynthesis and expression of zona pellucida glycoproteins in mammals [PDF]
, 2001 The zona pellucida (ZP) is an extracellular matrix surrounding the oocyte and the early embryo that exerts several important functions during fertilization and early embryonic development.
Kölle, S. +2 more
core +1 more source
PSMA8‐Containing 20S Proteasome Regulates Spermiogenesis and Male Fertility
Advanced Science, EarlyView.PSMA8 assembles s20S proteasome that degrades specific substrates in elongating spermatids. Degradation of s20S‐substrates activates translation of FXR1‐target mRNAs, which are essential for mitochondrial sheath formation and sperm morphogenesis.
Huiwen Cao +7 more
wiley +1 more source
Scientific ReportsNotch is a conserved cell-signaling pathway involved in spermatogenesis regulation. This study firstly evaluated the presence, localization patterns, acquisition origin and relation to acrosome reaction of Notch proteins in bull sperm.
Patrícia Diniz +6 more
doaj +1 more source
Seminal Plasma Heparin Binding Proteins Improve Semen Quality by Reducing Oxidative Stress during Cryopreservation of Cattle Bull Semen [PDF]
Asian-Australasian Journal of Animal Sciences, 2016 Heparin binding proteins (HBPs) are produced by accessory glands. These are secreted into the seminal fluid, bind to the spermatozoa at the time of ejaculation, favour capacitation, acrosome reaction, and alter the immune system response toward the sperm.
Maulikkumar Patel +4 more
doaj +1 more source
Osteopontin enhances sperm capacitation and in vitro fertilization efficiency in boars
Journal of Animal Science and Technology, 2022 In this study, we used more reliable experimental materials and methods to detect the effects of osteopontin (OPN) on boar sperm in vitro capacitation, acrosome reaction, and fertilization efficiency.
Yun Chen, Kai Wang, Shouquan Zhang
doaj +1 more source
The tyrosine kinase FER is responsible for the capacitation-associated increase in tyrosine phosphorylation in murine sperm [PDF]
, 2016 Sperm capacitation is required for fertilization. At the molecular level, this process is associated with fast activation of protein kinase A. Downstream of this event, capacitating conditions lead to an increase in tyrosine phosphorylation. The identity
Alvau, Antonio +13 more
core +1 more source
Acrosin Accelerates the Dispersal of Sperm Acrosomal Proteins during Acrosome Reaction [PDF]
Journal of Biological Chemistry, 1998 Using homologous recombination, we have previously produced male mice carrying a disruptive mutation (Acr-/-) in the acrosin gene. Although Acr-/- mouse sperm lacking the acrosin protease activity still penetrated the zona pellucida and fertilized the egg, the mutant sperm exhibited a delay in penetration of the zona pellucida solely at the early ...
K, Yamagata +6 more
openaire +2 more sources
Oocyte–cumulus cell interaction: a key factor in early embryo development
Biological Reviews, EarlyView.ABSTRACT The evaluation of oocyte competence is a fundamental step in achieving successful outcomes following assisted reproduction techniques (ART). At present, however, conventional oocyte maturation assessment is carried out by morphological observation, which is a subjective method that does not consider molecular features.
Marc Torres‐Garrido +2 more
wiley +1 more source
In vitro fertilization using sperm activated by ML‐2–3 isolated from Morinda lucida Bentham leaves
Reproductive Medicine and Biology, 2022 Purpose ML‐2–3 is a novel tetracyclic iridoid derived from Morinda lucida Bentham leaves. This compound has anti‐trypanosomal and anti‐leishmanial effects.
Tomoe Ohta +5 more
doaj +1 more source
Food Safety and Health, EarlyView.Fenugreek and stevia extracts protect against dexamethasone‐induced testicular damage in male rats by enhancing antioxidant defenses, improving sperm quality, and restoring hormonal balance, highlighting their potential as natural therapeutics for preventing corticosteroid‐induced reproductive toxicity.
Mosab Gad +3 more
wiley +1 more source