Regulation of spermatozoa motility in response to cations in Russian sturgeon Acipenser gueldenstaedtii.
Identifieur interne : 000423 ( Ncbi/Merge ); précédent : 000422; suivant : 000424Regulation of spermatozoa motility in response to cations in Russian sturgeon Acipenser gueldenstaedtii.
Auteurs : Ping Li [République tchèque] ; Zhi-Hua Li ; M. Hulak ; M. Rodina ; O. LinhartSource :
- Theriogenology [ 1879-3231 ] ; 2012.
English descriptors
- KwdEn :
- Animals, Aquaculture, Calcium (pharmacology), Cations (pharmacology), Dose-Response Relationship, Drug, Fishes (physiology), Magnesium (pharmacology), Male, Osmolar Concentration, Potassium (pharmacology), Semen Analysis, Sodium (pharmacology), Sperm Motility (drug effects), Spermatozoa (drug effects), Spermatozoa (physiology), Swimming.
- MESH :
- chemical , pharmacology : Calcium, Cations, Magnesium, Potassium, Sodium.
- drug effects : Sperm Motility, Spermatozoa.
- physiology : Fishes, Spermatozoa.
- Animals, Aquaculture, Dose-Response Relationship, Drug, Male, Osmolar Concentration, Semen Analysis, Swimming.
Abstract
The aim of this study was to investigate the response of Russian sturgeon (Acipenser gueldenstaedtii) sperm to external cations (Na(+), K(+), Ca(2+), and Mg(2+)) and their susceptibility on the induction of motility and swimming behavior. An in vitro spermatozoa motility assay was used by a computer-aided Motion-Analysis system. Sperm motility was inhibited by 60 mM NaCl (~140 mOsm/kg) and 0.7 mM KCl solutions (~ 21.4 mOsm/kg). The Ca(2+) and Mg(2+) ions were not able to inhibit spermatozoa motility. By contrast, Na(+) within a limited concentration range (between 45 and 55 mm) was able to reverse the inhibitory effect of K(+) at the critical concentration (0.7 mM). Ca(2+) and Mg(2+) were also able to reverse the K(+)-mediated spermatozoa motility restriction at concentrations starting at 0.01 and 0.1 mM, respectively. These results provide evidence for the role of K(+) in suppressing spermatozoa motility, and suggest that Ca(2+), Mg(2+), and possibly Na(+) trigger motility in Russian sturgeon sperm.
DOI: 10.1016/j.theriogenology.2012.01.025
PubMed: 22444559
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<front><div type="abstract" xml:lang="en">The aim of this study was to investigate the response of Russian sturgeon (Acipenser gueldenstaedtii) sperm to external cations (Na(+), K(+), Ca(2+), and Mg(2+)) and their susceptibility on the induction of motility and swimming behavior. An in vitro spermatozoa motility assay was used by a computer-aided Motion-Analysis system. Sperm motility was inhibited by 60 mM NaCl (~140 mOsm/kg) and 0.7 mM KCl solutions (~ 21.4 mOsm/kg). The Ca(2+) and Mg(2+) ions were not able to inhibit spermatozoa motility. By contrast, Na(+) within a limited concentration range (between 45 and 55 mm) was able to reverse the inhibitory effect of K(+) at the critical concentration (0.7 mM). Ca(2+) and Mg(2+) were also able to reverse the K(+)-mediated spermatozoa motility restriction at concentrations starting at 0.01 and 0.1 mM, respectively. These results provide evidence for the role of K(+) in suppressing spermatozoa motility, and suggest that Ca(2+), Mg(2+), and possibly Na(+) trigger motility in Russian sturgeon sperm.</div>
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