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Activation of palmitic acid by human spermatozoa
Activation palmitic acid human spermatozoa
2009/2/23
Human spermatozoa were studied to determine if a long chain fatty acid, CoASH ligase (AMP) (E.C. 6.2.1.3), was present. Ligase activity was measured with a radioligand millipore filter technique and...
Activation of coagulation factor X in human semen
Activation coagulation factor X human semen
2009/2/17
Tissue factor (TF) is an essential cofactor for factor VII (fVII) in initiating blood coagulation. Recently, TF was shown to be present in human semen and to be associated with prostasomes that orig...
A comparison of critical osmolality and hydraulic conductivity and its activation energy in fowl and bull spermatozoa
Water permeability plasma membrane flow cytometry
2009/2/10
Measurements were made of critical osmolality, the osmolality at which 50% of the cells are lysed, and of the permeation time, the time taken to lyse 50% of the cells in an osmotic solution lower ...
Possible Redox Regulation Minireview of Sperm Motility Activation
Possible Redox Regulation Sperm Motility Activation
2008/12/25
Mature spermatozoa are held in a quiescent state within
the cauda epididymis but show an instantaneous burst of
vigorous motility on being released from this environment
at ejaculation. Although th...
Successful Pregnancy and Delivery Following Intracytoplasmic Injection of Frozen-Thawed Nonviable Testicular Sperm and Oocyte Activation With Calcium Ionophore
Successful Pregnancy Delivery Intracytoplasmic Injection Frozen-Thawed Nonviable Testicular Sperm Oocyte Activation
2008/12/24
Several pregnancies have been reported using frozenthawed testicular sperm (Fisher et al, 1996; Podsiadly et al, 1996; Khalifeh et al, 1997), stressing the role of sperm motility for successful outc...
Clinical Use of Pentoxifylline for Activation of Immotile Testicular Sperm Before ICSI in Patients With Azoospermia
Testicular biopsy human spermatozoa phosphodiesterase inhibitors motility stimulants fertilization
2008/12/23
The testicular sperm from biopsy and frozen/thawed tissue are frequently immotile. The purpose of our retrospective study was to assess the effect of short exposure of testicular samples with only i...
A Cyclic Adenosine 3',5'-Monophosphate Stimulates Phospholipase C1-Calcium Signaling via the Activation of Tyrosine Kinase in Boar Spermatozoa
Sperm cAMP SYK PLC calcium store
2008/12/23
The aim of this study was to reveal a downstream part of the intracellular signaling that is mediated by cyclic adenosine monophosphate (cAMP)-dependent tyrosine kinases, including spleen tyrosine (...
Activation of the Nuclear Factor Kappa B Pathway Following Ischemia-Reperfusion of the Murine Testis
Testicular oxidative stress apoptosis NF-B activation
2008/12/23
Ischemia-reperfusion (IR) of the testis results in testicular oxidative stress and germ cell-specific apoptosis. Nuclear factor kappa B (NF-B) is a nuclear transcription factor involved in the control...
Activation of Protein Kinase A During Human Sperm Capacitation and Acrosome Reaction
Phosphodiesterases cyclic adenosine monophosphate calcium ionophore A23187 signal transduction
2008/12/15
Spermatozoa undergo a variety of changes during their life that are prerequisites to their maturation and ability to fertilize eggs. Mammalian sperm capacitation and acrosome reaction are regulated by...
Contraceptive Steroids Influence the Hemostatic Activation State in Healthy Men
Cardiovascular risk gestagens hemostasis hormonal male contraception testosterone
2008/12/5
Hormonal contraception for men requires administration of testosterone and gestagens. The effects of a long-acting testosterone ester and 2 different progestins on hemostatic activation parameters w...