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ISSN 2522-9028 (Print)
ISSN 2522-9036 (Online)

Fiziologichnyi Zhurnal

is a scientific journal issued by the

Bogomoletz Institute of Physiology
National Academy of Sciences of Ukraine

Editor-in-chief: V.F. Sagach

The journal was founded in 1955 as
1955 – 1977 "Fiziolohichnyi zhurnal" (ISSN 0015 – 3311)
1978 – 1993 "Fiziologicheskii zhurnal" (ISSN 0201 – 8489)
1994 – 2016 "Fiziolohichnyi zhurnal" (ISSN 0201 – 8489)
2017 – "Fiziolohichnyi zhurnal" (ISSN 2522-9028)

Fiziol. Zh. 2015; 61(2): 15-22


S.D. Melnytchuk1, S.V. Khyzhnyak1, V.S. Morozova1, L.I. Stepanova2, A.A. Umanskaya1, V.M. Voitsitsky1

  1. National University of Life and Environmental Sciences of Ukraine
  2. Taras Shevchenko Kyiv National University


We investigated the energy activity of mitochondria from rat cardiomyocytes under the artificial carbon dioxide hypobiosis, which led to physiological changes in the organism (the decrease of body temperature, the reduction of heart rate, etc.). The respiratory and phosphorylation activities in mitochondria of cardiomyocytes is reduced when using two oxidation substrates (succinate and malate), which characterize the rate of the oxygen consumption by the mitochondria. The partial uncoupling of the oxidation and phosphorylation processes when using the malate unlike succinate was established. The activity of NADH-KoQ-oxidoreductase (complex I of the respiratory chain) is inhibited, but the activities of succinate dehydrogenase and cytochrome oxidase don’t change. Probably, the priority of the succinate use under the artificial hypobiosis provides the support of the mitochondria functional activity on a sufficient energy level. It is evidenced by the ATP-synthetase activity. The modifications of the structural and functional state of the inner mitochondria membrane of the cardiomyocytes are directed to the adaptation under the artificial carbon dioxide hypobiosis

Keywords: artificial hypobiosis, cardiomyocytes, mitochondria, respiratory chain, inner mitochondrial membrane, conformational modification.


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