نتایج جستجو برای: sperm protein

تعداد نتایج: 1266734  

2015
Hasmik Margaryan Andriy Dorosh Jana Capkova Pavla Manaskova-Postlerova Anatoly Philimonenko Pavel Hozak Jana Peknicova

BACKGROUND Sperm proteins are important for the sperm cell function in fertilization. Some of them are involved in the binding of sperm to the egg. We characterized the acrosomal sperm protein detected by a monoclonal antibody (MoAb) (Hs-8) that was prepared in our laboratory by immunization of BALB/c mice with human ejaculated sperms and we tested the possible role of this protein in the bindi...

Journal: :iranian journal of veterinary research 2013
r. m. nandre sh. fatima g. bhupal h. j. derashri c. g. joshi

the indian riverine buffaloes are more susceptible to variations in the environment. these variations affect seminal plasma proteins, which in turn affect fertility. this study was conducted to evaluate variations in the indian bubalus bubalis seminal plasma protein profile using two-dimensional polyacrylamide gel electrophoresis (2d-page) during winter and summer seasons, and its relation with...

Journal: :Nanoscale advances 2023

Protamine, a small, strongly positively-charged protein, plays key role in achieving chromatin condensation inside sperm cells and is also involved the formulation of nanoparticles for gene therapy and...

Journal: :Journal of cell science 2003
Lawrence L LeClaire Murray Stewart Thomas M Roberts

Protrusion of the lamellipod in the crawling sperm of Ascaris is tightly coupled to the localized vectorial assembly and bundling of the major sperm protein cytoskeleton. In cell-free extracts of sperm, vesicles derived from the leading edge membrane reconstitute protrusion by directing the assembly of columnar meshworks of major sperm protein filaments that push the vesicle forward as they elo...

Journal: :Development 2006
Kathleen L Wilson Karen R Fitch Blaine T Bafus Barbara T Wakimoto

Fertilization typically involves membrane fusion between sperm and eggs. In Drosophila, however, sperm enter eggs with membranes intact. Consequently, sperm plasma membrane breakdown (PMBD) and subsequent events of sperm activation occur in the egg cytoplasm. We previously proposed that mutations in the sneaky (snky) gene result in male sterility due to failure in PMBD. Here we support this pro...

Journal: :The Journal of Cell Biology 1994
A Cheng T Le M Palacios L H Bookbinder P M Wassarman F Suzuki J D Bleil

Recognition between mammalian gametes occurs when the plasma membrane of the sperm head binds to the zona pellucida (ZP), an extracellular coat surrounding eggs. ZP3, one of three glycoproteins in the ZP, is the egg protein recognized by sperm. A mouse sperm surface protein, sp56 (M(r) = 56,000), has been identified on the basis of its specific affinity for ZP3 (Bleil, J. D., and P. M. Wassarma...

2014
Kun Li Yamei Xue Aijun Chen Youfang Jiang Haifeng Xie Qixian Shi Songying Zhang Ya Ni

Heat shock protein 90 plays critical roles in client protein maturation, signal transduction, protein folding and degradation, and morphological evolution; however, its function in human sperm is not fully understood. Therefore, our objective in this study was to elucidate the mechanism by which heat shock protein 90 exerts its effects on human sperm function. By performing indirect immunofluor...

Journal: :Veterinaria México OA 2023

The study evaluated the effect of two animal protein-free extenders on ram semen cryopreservation tropical hair breeds. ejaculates were collected from 8 rams (4 Blackbelly and 4 Pelibuey), which mixed (pooled) by breed, diluted cryopreserved in three different extenders: Animal protein [Tris egg yolk (Triladyl®)], AndroMed® (lecithin soy bean) OPTIXcell® (liposome). Sperm analyses total (TM) pr...

Journal: :international journal of fertility and sterility 0
adel zalata ayman z el-samanoudy dalia shaalan youssef el-baiomy taymour mostafa

background: use of cellular phones emitting radiofrequency electromagnetic field (rf-emf) has been increased exponentially and become a part of everyday life. this study aimed to investigate the effects of in vitro rf-emf exposure emitted from cellular phones on sperm motility index, sperm dna fragmentation and seminal clusterin (clu) gene expression. materials and methods: in this prospective ...

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