Influence of the dense extract from herb of Primula veris L. On the oxidative stress development and the functional state of the cardiomyocytes mitochondria of rats with experimental chronic heart failure

   


1. Volgograd State Medical University, Volgograd, Russia
2. Bashkir State Medical University, Ufa, Russia
Type: Experimental study
DOI: 10.18097/PBMC20186404334      PubMed Id: 30135280
Year: 2018 vol: 64  issue:4  pages: 334-343
Abstract: Experimental chronic heart failure (CHF), caused by administration of L-isoproterenol (2.5 mg/kg twice a day intraperitoneally for 21 days), promotes uncoupling of respiration and oxidative phosphorylation. The rate of mitochondrial oxygen consumption in the metabolic state V3 by Chance in animals with CHF decreased by 53.3% (p<0.05) with malate using (as an oxidation substrate feeding сomplex I of the electron transport chain (ETC)), by 70.6% (p<0.05) with succinate using (сomplex II substrate) and by 63.6% (p<0.05) when malate and succinate were added simultaneously. The respiratory control ratio significantly decreased 2.3 times for сomplex I, 2.5 for сomplex II, and 2.6 times for the simultaneous operation of two respiratory chain complexes in mitochondria of CHF rats compared to intact animals. Mitochondrial dysfunction in experimental CHF is evidently due to the development of oxidative stress. It was revealed that the content of malonic dialdehyde (MDA) in the group of rats with experimental CHF was higher by 54.7% (p<0.05), as compared with intact animals. The activity of superoxide dismutase (SOD) and catalase was lower by 17.5% (p<0.05), and by 18.4%, respectively than in the intact group. The dense extract from herba of Primula veris L. (DEHPV) 30 mg/kg limits the development of mitochondrial dysfunction in rats with experimental CHF, as evidenced by an increase in the role of V3 respiration for the first and second respiratory chain complexes in 1.7 (p<0.05) and 2.0 times (p<0.05), respectively, the ratio of respiratory control (RCR) – 1.7 times (p<0.05) for сomplex I and 2 times (p<0.05) for сomplex II compared with the negative control. The concentration of MDA was by 15.7% (p<0.05), lower and the activity of SOD was by 56.3% (p<0.05) higher.
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Reference: Popova T.A., Muzyko E.A., Kustova M.V., Bychenkova M.A., Perfilova V.N., Prokofiev I.I., Samoylova M.A., Tyurenkov I.N., Latypova G.M., Kataev V.A., Influence of the dense extract from herb of Primula veris L. On the oxidative stress development and the functional state of the cardiomyocytes mitochondria of rats with experimental chronic heart failure, Biomeditsinskaya khimiya, 2018, vol: 64(4), 334-343.
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