The effect of molecular hydrogen and protein kinase C inhibitor on the functional parameters of bovine sperm

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Abstract

Background.  Studies on the use of molecular hydrogen as a cryoprotector for cattle spermatozoa have shown positive results, an increase in cell mobility and viability, and stabilization of their membranes have been noted. Despite this, the mechanisms of action of molecular hydrogen on spermatozoa remain unclear. 

Purpose. Investigation of the mechanisms of action of molecular hydrogen and the inhibitor of protein kinase C – staurosporin on the functional activity of bovine sperm. 

Materials and methods. The object of the study was semen samples from Holstinized bulls, subjected to various treatments. Sperm diluted with a standard diluent "BioXcell" was used; sperm diluted with a diluent "BioXcell" enriched with molecular hydrogen; sperm incubated using staurosporin – a protein kinase C inhibitor; sperm treated with molecular hydrogen and subsequent incubation with staurosporin. For each sample in the sperm, an analysis of kinetic parameters, energy status and intensity of free radical processes was carried out. 

Results. The inhibitor of proteinkinase C – staurosporin reduced the metabolic and kinetic parameters of spermatozoa, which confirms the direct participation of proteinkinase C in maintaining the structural and functional integrity and activity of spermatozoa. Molecular hydrogen in the presence of staurosporin had a positive effect on the studied parameters of bovine sperm, therefore, in addition to proteinkinase C, other mechanisms that are insensitive to staurosporin are involved in the transduction of molecular hydrogen-induced signals. 

Conclusion. Identification of the mechanisms determining the stimulating effects of molecular hydrogen on bull sperm will improve the parameters of fresh sperm and the technology of cryopreservation of bull sperm.

About the authors

Marina N. Ivashchenko

Nizhny Novgorod State Agrotechnological University named after L.Y. Florentyev

Author for correspondence.
Email: kafedra2577@mail.ru
ORCID iD: 0000-0001-6642-8518
SPIN-code: 8510-8676

Cand. Sc. (Biology), Associate Professor

 

Russian Federation, 97, Gagarin Ave., Nizhny Novgorod, 603107, Russian Federation

Anna V. Deryugina

National Research Lobachevsky State University of Nizhny Novgorod

Email: deryugina@ibbm.unn.ru
ORCID iD: 0000-0001-8812-8559
SPIN-code: 7974-4600

Dr. Sc. (Biology), Associate Professor

 

Russian Federation, 23, Gagarin Ave., Nizhny Novgorod, 603022, Russian Federation

Andrey A. Belov

Nizhny Novgorod State Agrotechnological University named after L.Y. Florentyev

Email: andrey.raven@gmail.com
ORCID iD: 0000-0002-4869-5054
SPIN-code: 1394-7694

Cand. Sc. (Biology), Associate Professor

 

Russian Federation, 97, Gagarin Ave., Nizhny Novgorod, 603107, Russian Federation

Pavel S. Ignatiev

Production Association "Ural Optical and Mechanical Plant" named after E.S. Yalamov

Email: ignasha2000@yandex.ru
ORCID iD: 0000-0001-5075-7034
SPIN-code: 7956-1778

Cand. Sc. (Phys.-Math.)

 

Russian Federation, 33B, Vostochnaya Str., Yekaterinburg, 620100, Russian Federation

Mikhail I. Latushko

Production Association "Ural Optical and Mechanical Plant" named after E.S. Yalamov

Email: ancord.m@yandex.ru

Cand. Sc. (Engineering)

 

Russian Federation, 33B, Vostochnaya Str., Yekaterinburg, 620100, Russian Federation

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