[Effect of hydrogen sulfide donor NaHs on the functional state of the respiratory chain of the rat heart mitochondria].

In experiments on mitochondria isolated from the heart tissue of adult rats we studied the effects of a donor of hydrogen sulfide, NaHS, on the respiratory chain of the organelles. We found that NaHS (10(-9)-10(-6) mol/l) caused a dose-dependent decrease in the rate of oxygen consumption in the presence of succinate and ADP (state 3 to Chance), and in the absence of ADP (state 4). The decrease in the rate of oxygen consumption in a concentration NaHS 10(-9) mol/l and 10(-8) mol/l associated with an increased conjugation of oxidation and phosphorylation, as evidenced by the increase in the respiratory control, the efficiency of oxidative phosphorylation (ADP/O) is not changed.

[Development and estimation of nanosomal rifampicin].

A lab-scale method for preparation of rifampicin-loaded polybutylcyanoacrylate nanoparticles (nanosames) was developed. The biodistribution of the nanosome-entrapped rifampicin after its intravenous administration was studied on healthy mice. The nanoparticles provided significant liver and spleen accumulation of rifampicin.