Determination of the minimal inhibitory concentration of Perchlozon® against Mycobacterium tuberculosis with a different spectrum of drug resistance
Abstract
The article describes the study of the anti-tuberculosis activity of Perchlozon® (thioureidoiminomethylpyridinium perchlorate) against Mycobacterium tuberculosis (MBT) with a different resistance profile to primary and reserve anti-TB drugs by in vitro determining the minimum inhibitory concentrations of the drug. The minimum inhibitory concentration (MIC) of the drug was determined on Middlebrook 7H10 agar nutrient medium in the range from 0.5 to 64.0 μg/ml on clinical MBT strains, both susceptible and resistant to the main and reserve anti-TB drugs.
As a result, various Perchlozon® MIC values were obtained, at which inhi-bition of MBT growth was observed. 86.7% of the susceptible M MBT strains (including the M. tuberculosis H37Rv reference strain) stopped their growth in the range from 2.0 to 4.0 μg/ml, 46.7% of MDR- MBT strains stopped their growth in the range from 2.0 to 16.0 μg/ml, and 53.3% MDR- MBT strains stopped their growth in the range from 32.0 to 64.0; 73.3% of XDR- MBT strains stopped their growth in the range from 32.0 to 64.0 μg/ml.
It has been established that the antitubercular activity of Perchlozon® in vitro depends on drug resistance spectrum of the MBT to the first-line and reserve an-ti-TB drugs.
About the Authors
S. G. SafonovaRussian Federation
I. V. Peretokina
Russian Federation
M. V. Makarova
Russian Federation
L. Yu. Krylova
Russian Federation
Yu. D. Mikhailova
Russian Federation
D. V. Grigorash
Russian Federation
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Review
For citations:
Safonova S.G., Peretokina I.V., Makarova M.V., Krylova L.Yu., Mikhailova Yu.D., Grigorash D.V. Determination of the minimal inhibitory concentration of Perchlozon® against Mycobacterium tuberculosis with a different spectrum of drug resistance. Tuberculosis and socially significant diseases. 2020;(1):26-33. (In Russ.)