Contribution of the gasotransmitter nitric oxide to the structural and functional organization of erythrocytes under conditions of hypoxia/reoxygenation

  
Akulich N.V.1 , Zinchuk V.V.2

1. National Anti-Doping Laboratory, Lyasny, Minsk Region, Belarus
2. Grodno State Medical University, Grodno, Belarus
Section: Clinical and Diagnostic Research
DOI: 10.18097/PBMC20236905315      PubMed Id: 37937434
Year: 2023  Volume: 69  Issue: 5  Pages: 315-321
Hypoxia is accompanied by changes in metabolism and cell functioning. Erythrocyte hemoglobin can be involved in adaptation to hypoxia by acting as an oxygen sensor, providing a link between oxygen content and blood circulation. The mechanisms providing this function have not been completely established. The purpose of this study was to evaluate the effect of the gasotransmitter nitric oxide on the structural and functional organization of erythrocytes under conditions of hypoxia/reoxygenation. NO participated in adaptive reactions under hypoxia/reoxygenation conditions by changing hemoglobin conformation, followed by changes in hemoprotein spectral characteristics and hemoglobin affinity to oxygen together with increasing anisocytosis, volume and cell surface. The increase in intracellular NO concentrations under hypoxic conditions was provided by extracellular fluid nitrites. Molsidomine (a NO donor) induced a higher NO increase without involvement of the nitrite reductase mechanism, it caused an increase in the average erythrocyte volume, anisocytosis, and an increase in the cell surface.
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Keywords: erythrocytes, hypoxia/reoxygenation, nitric oxide, flow cytometry, spectroscopy, molsidomine
Citation:

Akulich, N. V., Zinchuk, V. V. (2023). Contribution of the gasotransmitter nitric oxide to the structural and functional organization of erythrocytes under conditions of hypoxia/reoxygenation. Biomeditsinskaya Khimiya, 69(5), 315-321.
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