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Pathophysiology of sperm motility
Frontiers in Bioscience, 2006Mammalian spermatozoa acquire the ability to swim during their transit from the testis to the oviduct under the control of several external and intracellular factors. These factors play also a pivotal role in regulating acquisition of hyperactivated motility and during the process of chemotaxis. This review summarizes the involvement of such factors in
LUCONI, MICHAELA +2 more
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Hyperactivated Motility in Sperm
Reproduction in Domestic Animals, 2003ContentsHyperactivation is a movement pattern seen in sperm at the site and time of fertilization in mammals. It may be critical to the success of fertilization, because it enhances the ability of sperm to detach from the wall of the oviduct, to move around in the labyrinthine lumen of the oviduct, to penetrate mucous substances and, finally, to ...
S S, Suarez, H-C, Ho
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2019
This module introduces equations related to oxygen diffusion in the context of understanding the relationship between oxygen needs and metabolism. It is intended for an introductory biology audience.
Gross, Lou +2 more
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This module introduces equations related to oxygen diffusion in the context of understanding the relationship between oxygen needs and metabolism. It is intended for an introductory biology audience.
Gross, Lou +2 more
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Metabolism of motile zebrafish sperm
Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 2011As metabolism of motile fish sperm is not well understood, the current study examined the metabolism of saline-activated zebrafish (Danio rerio) sperm. Activation of sperm with inhibitors of oxidative phosphorylation (potassium cyanide, 2,4 dinitrophenol or carbonyl cyanide 3-cholorophenylhydrazone) negatively impacted sperm motility by 60-90 s ...
R L, Ingermann +3 more
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Pharmacological stimulation of sperm motility
Human Reproduction, 1994The treatment of male factor infertility is a rapidly developing field. The introduction of microsurgical fertilization techniques allows assisted conception units to treat couples who previously would not have benefited from in-vitro fertilization techniques.
F, Lanzafame +4 more
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Regulation of Mammalian Sperm Motility
Archives of Andrology, 1989The physiological regulation of sperm motility has become more amendable to investigation since the demonstration that cAMP and calcium play a role in modulating the functioning of the flagellar axoneme. Although the external triggering mechanisms that initiate motility and capacitation are still unknown, evidence supports a modification of the calcium
C B, Lindemann, K S, Kanous
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Fertility and Sterility, 1983
Six different doses of caffeine were used to study its effect on human spermatozoal motility. The recently developed method for assessment of sperm motility by videomicrography was used to determine the percentage of sperm motility, swimming speed (velocity), percentage of progressive sperm, and progressive swimming speed.
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Six different doses of caffeine were used to study its effect on human spermatozoal motility. The recently developed method for assessment of sperm motility by videomicrography was used to determine the percentage of sperm motility, swimming speed (velocity), percentage of progressive sperm, and progressive swimming speed.
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Mitochondrial PKA mediates sperm motility
Biochimica et Biophysica Acta (BBA) - General Subjects, 2014Mitochondria are the major source of ATP to power sperm motility. Phosphorylation of mitochondrial proteins has been proposed as a major regulatory mechanism for mitochondrial bioenergetics.Sperm motility was measured by a computer-assisted analyzer, protein detection by western blotting, membrane potential by tetramethylrhodamine, cellular ATP by ...
Rashel, Mizrahi, Haim, Breitbart
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Angiotensin II stimulates sperm motility
Regulatory Peptides, 1996The physiological factors which induce and maintain mammalian sperm maturation and motility generally remain unclear, although several agents are known to be involved. We recently described the application of immunocytochemical and immunoblotting methods to identify the angiotensin II type 1 (AT1) receptor in the tails of ejaculated rat and human sperm,
G P, Vinson +7 more
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Urogenital infection and sperm motility
Andrologia, 2003Male accessory sex gland infections are considered as potential hazards to male fertility. Various pathophysiological concepts have evolved from experimental and clinical studies that begin to explain the effects of bacteria and immunological events on the function of spermatozoa and sperm motility in particular. Besides direct influences of pathogenic
T, Diemer +4 more
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