Results 31 to 40 of about 5,280,557 (249)

Differential concentration and time dependent effects of progesterone on kinase activity, hyperactivation and acrosome reaction in human spermatozoa.

open access: yesJournal of Developmental and Physical Disabilities, 2012
Vrushali Sagare-Patil   +5 more
semanticscholar   +3 more sources

Progesterone significantly enhances the mobility of boar spermatozoa [PDF]

open access: yes, 2013
Progesterone released from the cumulus cells of the oocyte causes a number of physiological responses in human sperm cells including hyperactivation, acrosome reaction and chemotaxis. We employed a validated sperm mobility assay, which involves measuring
Adya, Ashok K.   +6 more
core   +3 more sources

CaMKIIalpha interacts with multi-PDZ domain protein MUPP1 in spermatozoa and prevents spontaneous acrosomal exocytosis [PDF]

open access: yes, 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.
Ackermann, Frauke   +5 more
core   +1 more source

The rab3A-22A chimera prevents sperm exocytosis by stabilizing open fusion pores [PDF]

open access: yes, 2016
At the final stage of exocytotis, a fusion pore opens between the plasma and a secretory vesicle membranes; typically, when the pore dilates the vesicle releases its cargo.
Bustos, Matias Alberto   +5 more
core   +1 more source

Essential role of CFTR in PKA-dependent phosphorylation, alkalinization, and hyperpolarization during human dperm capacitation [PDF]

open access: yes, 2017
Mammalian sperm require to spend a limited period of time in the female reproductive tract to become competent to fertilize in a process called capacitation.
Austin   +63 more
core   +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]

open access: yesCell 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

Regulating the acrosome reaction

open access: yesThe 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   +4 more sources

Epac, Rap and Rab3 act in concert to mobilize calcium from sperm's acrosome during exocytosis [PDF]

open access: yes, 2014
BACKGROUND: Exocytosis of sperm's single secretory granule or acrosome (acrosome reaction, AR) is a highly regulated event essential for fertilization. The AR begins with an influx of calcium from the extracellular milieu and continues with the synthesis
Bustos, Matias Alberto   +3 more
core   +1 more source

Seminal Plasma Proteins [PDF]

open access: yes, 2012
The ejaculated semen consists of two major components viz. sperm cells (spermatozoa) and the fluid part obtained after centrifugation called seminal plasma.
P Perumal
core   +2 more sources

Rapid progesterone actions on thymulin-secreting epithelial cells cultured from rat thymus [PDF]

open access: yes, 1999
Many soluble factors of neural, endocrine, paracrine and autocrine origin are present in the thymus and modulate its function. Long-term effects of sex steroids have! been documented for thymocytes and cells of the thymic microenvironment. In this report
Brucker, Cosima   +4 more
core   +1 more source

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