Abstract
The review addresses the mechanisms of lead acetate toxic effects on the cardiovascular and nervous systems, as well as visceral organs. Experimental and clinical studies conducted in recent years have shown an important pathogenetic role of oxidative stress in the dysfunction of the vascular endothelium, leading to the development of pathology of internal organs, especially the kidneys and liver. Activation of free-radical processes and disruption of cellular bioenergetics are accompanied by a decrease in the production of nitric oxide, a major vasodilator, leading to endothelial dysfunction, increased vascular tone, and eventually to systemic vasoconstriction. On the other hand, reactive oxygen species and lipid peroxidation products stimulate the synthesis of pro-inflammatory cytokines and pro-apoptotic proteins, causing intracellular inflammatory processes in the visceral organs, DNA damage, cell apoptosis, as well as persistent renal and hepatic dysfunction. In this regard, there have been developed various pharmaceuticals with antioxidant and anti-inflammatory properties, and those able to improve cellular bioenergetics of the visceral organs. Among them are such phyto-derivatives as Moringa oleifera extract, curcumin, vitamin C, vitamin C–curcumin combination, as well as analogs of endogenous antioxidants, L-carnitine and coenzyme Q10. All tissues contain significant amounts of ubiquinone, which is essential for cellular functions, including electron and proton transport in the mitochondrial respiratory chain and antioxidant defense.
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This review was written within the state budget-funded scientific research assignment to the Institute of Biomedical Research, Branch of the Vladikavkaz Scientific Center of the Russian Academy of Sciences.
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Conceptualization and editing the manuscript (S.G.D.); literature data collection, analysis of publications, writing and editing the manuscript (S.G.D., F.S.D., O.I.M.).
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Translated by A. Polyanovsky
Russian Text © The Author(s), 2022, published in Rossiiskii Fiziologicheskii Zhurnal imeni I.M. Sechenova, 2022, Vol. 108, No. 5, pp. 626–635https://doi.org/10.31857/S0869813922050028.
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Dzugkoev, S.G., Dzugkoeva, F.S. & Margieva, O.I. Mechanisms of Lead Toxicity and Their Pathogenetic Correction. J Evol Biochem Phys 58, 807–814 (2022). https://doi.org/10.1134/S0022093022030140
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DOI: https://doi.org/10.1134/S0022093022030140