Abstract
By light and electron microscopy methods the effect of changes of environmental conditions on the state of the nitroxidergic system has been studied in molluscs on the background of action of elevated temperature and hypoxia. Analysis is performed of biological effect of isolated and combined effects of the studied factors on dynamics of NO synthesis. A higher resistance of CNS neurons to the combined action of hyperthermia and hypoxia is revealed in molluscs with the initially high level of nitrogen oxide production. In molluscs with the initially low level of development of the nitroxidergic system, induction of NO formation in stress has been found to be accompanied by a change of morphology of nervous structures. It is suggested that nitrogen oxide participates in evolutionary established mechanisms of protection of mollusc nerve cells from hypoxia, while the initial high level of NO production reflects larger adaptational possibilities characteristic of these organisms.
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Original Russian Text © E. P. Kotsyuba, 2008, published in Zhurnal Evolyutsionnoi Biokhimii i Fiziologii, 2008, Vol. 44, No. 2, pp. 200–208.
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Kotsyuba, E.P. Effect of elevated temperature and of hypoxia on NO activity in the central nervous system of bivalve molluscs. J Evol Biochem Phys 44, 237–246 (2008). https://doi.org/10.1134/S0022093008020126
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DOI: https://doi.org/10.1134/S0022093008020126