Results 11 to 20 of about 26,981 (241)
Regulating the acrosome reaction [PDF]
The International Journal of Developmental Biology, 2008 The acrosome reaction is a secretory event that must be completed by the sperm of many animal species prior to fusion with eggs. In mammals, exocytosis in triggered by ZP3, a glycoprotein component of the egg pellucida, following gamete contact. ZP3 promotes a sustained influx of Ca2+ into sperm that is necessary for the acrosome reaction.
Florman, Harvey M. +2 more
openaire +5 more sources
Restoration of Motility in Acrosome-Reacted Boar Spermatozoa Induced by the Ionophore 4-Br-A23187. [PDF]
Reprod Domest AnimABSTRACT The acrosome reaction (AR) is a calcium‐dependent exocytotic event required for successful fertilization. Calcium ionophores are commonly used to induce AR in vitro; however, this treatment is associated with a significant loss of sperm motility. The aim of this study was to evaluate the recovery of motility in boar spermatozoa after ionophore‐
Martín-Hidalgo D +3 more
europepmc +2 more sources
Small and Large Seminal Extracellular Vesicles Differentially Modulate Capacitation-Related Parameters in Frozen-Thawed Porcine Epididymal Spermatozoa. [PDF]
Reprod Domest AnimABSTRACT 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 ...
Panales P +7 more
europepmc +2 more sources
Nanoliposome-Mediated Delivery of Lipophilic Antioxidants as a Strategy to Improve the Preservation Capacity of Pig Semen at 17°C. [PDF]
Reprod Domest AnimABSTRACT While lipophilic antioxidants such as flavonols may improve the preservation capacity of sperm at 17°C, their low stability and bioavailability can reduce their biological effectiveness. Encapsulation strategies have been proposed to improve the delivery and cellular availability of hydrophobic antioxidants.
Varela Junior AS +6 more
europepmc +2 more sources
Validation of Calcein Violet as a New Marker of Semen Membrane Integrity in Domestic Animals
Animals, 2023 Many fluorochromes routinely used in semen quality analysis emit in the green and red channels, limiting their possible combination for multiple parameter analysis.
Sophie Egyptien +5 more
doaj +1 more source
EVALUATION OF ACROSOMAL STATUS ON LLAMA SPERM [PDF]
SPERMOVA, 2015 No ...
Carretero MI +3 more
doaj +1 more source
, 2016 The acrosome, a single exocytotic vesicle on the head of sperm, has an essential role in fertilization, but the exact mechanisms by which it facilitates sperm-egg interactions remain unresolved. The acrosome contains dozens of secretory proteins that are packaged into the forming structure during spermatogenesis; many of these proteins are localized ...
James A, Foster, George L, Gerton
openaire +2 more sources
Journal of Animal Science and Technology, 2021 Several herbs including Artemisia are known to possess conceptive property. In the present study, mouse spermatozoa were incubated with ethanol extract of Artemisia vulgaris leaves. The effect of
Sabina Bhandari +4 more
doaj +1 more source
The effect of concentration and storage time on short-term storage of ram sperm [PDF]
Kafkas Universitesi Veteriner Fakültesi Dergisi, 2022 The present study was conducted to observe the effect of different dilution rates on ram sperm motion characters (motility, progressivity, velocity and average of speed), head diameter, mitochondrial membrane potential (MMP) and live intact acrosome ...
Cemal DAYANIKLI +4 more
doaj +1 more source
CaMKIIalpha interacts with multi-PDZ domain protein MUPP1 in spermatozoa and prevents spontaneous acrosomal exocytosis [PDF]
, 2009 The success of acrosomal exocytosis, a complex process with a variety of inter-related steps, relies on the coordinated interaction of participating signaling molecules.
Borth, Heike +5 more
core +1 more source