Tag Archives: skeletal muscle

Influence of C(60) fullerene on the ischemia-reperfusion injury in the skeletal muscle of rat limb: mechanokinetic and biochemical analysis

D. O. Zavodovskyi1, S. Yu. Zay2, T. Yu. Matvienko1, Yu. I. Prylutskyy1,
N. Y. Nurishchenko1, S. S. Paradizova3, L. L. Bezuh3, U. Ritter4, P. Scharff4

1ESC Institute of Biology and Medicine, Taras Shevchenko National University of Kyiv, Ukraine;
2Lesya Ukrainka Eastern European National University, Lutsk, Ukraine;
3SI The Territorial Medical Association of the Ministry of Internal Affairs of Ukraine in Kyiv;
4Institute of Chemistry and Biotechnology, Technical University of Ilmenau, Ilmenau, Germany;
e-mail: Lab@univ.kiev.ua

Influence of the pristine C60 fullerene aqueous colloidal solution (C60FAS) on the ischemia-reperfusion injury in the skeletal muscle of rat limb was studied. Skeletal muscle damage effects were induced by 3 h lasting­ vascular ischemia. The impact of C60FAS was studied after its intramuscular injection immediately after 1 h of reper­fusion at different doses, namely: 1, 2 and 3 mg/kg of body weight. Changes in the mechanokinetic parame­ters of ischemic skeletal muscle contraction at different modes of functioning and biochemical parame­ters of blood were used as markers of ischemic injury, and analyzed in detail under action of C60FAS. The obtained results indicate on great promise of use of C60FAS to reduce the consequences of ischemic muscle trauma.

ATPase activity of rabbit skeletal muscles actomyosin complex under ultrasound effect

K. O. Medynska, N. Ye. Nurishchenko, L. I. Pelyukh, O. V. Shelyuk

Taras Shevchenko Kyiv National University;
Educational and Scientific Centre “Institute of Biology”, Ukraine;
e-mail: medinkat@ukr.net

Influence of continuous and impulsive ultrasound 0.05; 0.2; 0.4; 0.7 and 1.0 W/cm2 on ATPase activity of rabbit skeletal muscle actomyosin has been investigated in this work. It has been shown that most changes of Mg2+,Ca2+-ATPase activity are observed under 0.2 and 0.4 W/cm2 continuous ultrasound. K+-ATPase activity is inhibited by continuous ultrasound of all intensities studied. Impulsive 2 and 10 ms ultrasound did not change the Mg2+,Ca2+-ATPase activity. While K+-activity is reliably changed only under impulsive 0.7 and 1.0 W/cm2 ultrasound that can be explained by the thermal effect. It has been determined, when studying­ the reconstructed actomyosin with sound troponin complex, that troponin complex is the most ultrasound sensitive constituent of actomyosin.

Stoichiometry of cytochromes and oxygen tension in skeletal muscles of marine fish

A. A. Soldatov1, I. A. Parfyonova2

1A. O. Kovalevsky Institute of Biology of the Southern Seas,
National Academy of Science of Ukraine, Sevastopol;
e-mail: alekssoldatov@yandex.ru;
2V. I. Vernadsky Taurida National University, Simferopol

The character of oxygen tension distribution and peculiarities of cytochromes stoichiometry in skeletal muscles of bottom and pelagic species of marine fish were compared. It is shown, that the limitation of muscle activity increases the number of hypoxic zones in the muscle tissue. The mitochondrial electron-transporting chain then obtain the uncompensated type of organization, expressed in the increase of the share of the terminal complex aa3 on the background of general reduction of cytochromes content in the muscles. The reaction is of an adaptive character and can be implemented by pelagic fish species in conditions of experimental hypokinesia.