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IMMUNOLOGICAL MECHANISMS OF THERAPEUTIC EFFICACY OF OXIDIZED DEXTRAN IN SPERMATOGENESIS DISORDERS OF INFECTIOUS AND INFLAMMATORY GENESIS

https://doi.org/10.15789/1563-0625-IMO-3137

Abstract

Abstract

The article summarizes experimental and clinical data on the immunological properties of oxidized dextran. The main emphasis is on the pathophysiological mechanism of action of oxidized dextran, in particular on its ability to selectively activate tissue macrophages, including testicular macrophages, which are directly involved in spermatogenesis. In the experimental part of the work on the model of spermatogenesis disorders in rats induced by the introduction of Escherichia coli endotoxin, it was shown that oxidized dextran significantly reduces pathomorphological changes in the testes. At the same time, such an effect is associated with the activation of tissue macrophages and the release of corresponding cytokines, which are aimed at stopping the inflammatory process and normalizing microcirculatory hemodynamics. The presented experimental data correlate with the data on the high clinical efficacy of oxidized dextran in spermatogenesis disorders and male infertility. In the clinical part of the work on the effect of rectal administration of oxidized dextran in patients with severe spermatogenesis disorders, it was shown that oxidized dextran significantly increases the volume of ejaculate, the concentration of spermatozoa in the ejaculate, and the total number of spermatozoa. The authors link the data of experimental and clinical studies within the framework of a single concept of tissue macrophage activation and the ability of macrophages to change their phenotype depending on the microenvironment and the characteristics of the infectious and inflammatory process. This approach is also confirmed by clinical data on the effect of macrophage phenotypes on drug resistance and the severity of intracellular infections, in particular tuberculosis. The analysis of experimental and clinical data allows the authors to propose a theoretical model of the mechanism of therapeutic effectiveness of oxidized dextran in intracellular infections. The experimental and clinical data presented by the authors allow us to consider oxidized dextran as a very effective means for the treatment of intracellular infections, including urogenital infections causing male infertility.

About the Authors

Elena Georgievna Churina
Siberian State Medical University, Tomsk, Russian Federation.; National Research Tomsk State University, Tomsk, Russian Federation
Russian Federation

PhD, MD (Medicine), Professor of the Department of Pathophysiology, Siberian State Medical University, Professor of the Department of Natural Compounds, Medical and Pharmaceutical Chemistry, National Research Tomsk State University, Tomsk, Russian Federation



Olga Ivanovna Urazova
Siberian State Medical University, Tomsk, Russian Federation
Russian Federation

PhD, MD (Medicine), Professor, Corresponding Member of RAS, Head of the Pathophysiology Division, Siberian State Medical University; Tomsk, Russian Federation



Elena Gennadyevna Novikova
Federal Research Center for Fundamental and Translational Medicine, Novosibirsk, Russian Federation; Regional Medical Diagnostic Center, Novosibirsk, Russian Federation
Russian Federation

PhD (Medicine), Senior Researcher, Endocrinology Laboratory, Federal Research Center for Fundamental and Translational Medicine, Novosibirsk, urologist-andrologist, Regional Medical and Diagnostic Center, Novosibirsk, Russian Federation



Vera Georgievna Selyatitskaya
Federal Research Center for Fundamental and Translational Medicine, Novosibirsk, Russian Federation
Russian Federation

PhD, MD (Biology), professor, director of the Research Institute of Experimental and Clinical Medicine of the Federal Research Center for Fundamental and Translational Medicine, Novosibirsk, Russian Federation



Alexander Vasilyevich Troitsky
Federal Research Center for Fundamental and Translational Medicine, Novosibirsk, Russian Federation
Russian Federation

PhD (Medicine), leading researcher, head of the laboratory of biocompatible nanoparticles, nanomaterials and targeted delivery systems of the Federal Research Center for Fundamental and Translational Medicine, Novosibirsk, Russian Federation



Tatyana Nikolaevna Bystrova
Federal Research Center for Fundamental and Translational Medicine, Novosibirsk, Russian Federation
Russian Federation

researcher, laboratory of biocompatible nanoparticles, nanomaterials and targeted delivery means, Federal Research Center for Fundamental and Translational Medicine, Novosibirsk, Russian Federation



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Churina E.G., Urazova O.I., Novikova E.G., Selyatitskaya V.G., Troitsky A.V., Bystrova T.N. IMMUNOLOGICAL MECHANISMS OF THERAPEUTIC EFFICACY OF OXIDIZED DEXTRAN IN SPERMATOGENESIS DISORDERS OF INFECTIOUS AND INFLAMMATORY GENESIS. Medical Immunology (Russia). (In Russ.) https://doi.org/10.15789/1563-0625-IMO-3137

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ISSN 1563-0625 (Print)
ISSN 2313-741X (Online)