Abstract
Low bioavailability of rifampicin, one of the main antituberculous drug, stimulates searches of its new optimized formulations. The present study has showen possibility of rifampicin embedding into nanoparticles from plant phosphatidylcholine (diameter of 20-30 nm). Addition of sodium oleate to the phospholipid system caused a 2-fold increase of the percent of rifampicin incorporation. After oral administration to rats, the maximal drug observed in plasma one hour after was 0.5 and 4.2 mkg/ml for free rifampicin for rifampicin in phospholipids-oleate nanoparticles, respectively. These levels were maintained for more than two hours of the experiment. High rifampicin bioavailability in the oleate containing phospholipid nanosystem suggests prospectivity of its pharmaceutical elaboration.
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