ABSTRACT
INTRODUCTION: Mycobacterium tuberculosis (MTB) is a causative agent of tuberculosis (TB) that causes death worldwide. METHODS: MTB was subjected to phenotypic drug-susceptibility tests (DST), and drug-resistant genes were sequenced. RESULTS: Previously treated patients were more likely to have positive smear results and exhibit drug resistance. New patients were more likely to be mono SM-resistant and less likely to be INH- and RIF-resistant. The most common mutations were katG (S315T), rpoB (S450L), rpsL (K43R), and embB (M306V). CONCLUSIONS: The proportion of mono-SM-resistant TB among new patients was higher.
Subject(s)
Mycobacterium tuberculosis , Pharmaceutical Preparations , Tuberculosis, Multidrug-Resistant , Antitubercular Agents/pharmacology , Bacterial Proteins/genetics , China , Humans , Microbial Sensitivity Tests , Mutation , Mycobacterium tuberculosis/geneticsABSTRACT
Abstract INTRODUCTION: Mycobacterium tuberculosis (MTB) is a causative agent of tuberculosis (TB) that causes death worldwide. METHODS: MTB was subjected to phenotypic drug-susceptibility tests (DST), and drug-resistant genes were sequenced. RESULTS: Previously treated patients were more likely to have positive smear results and exhibit drug resistance. New patients were more likely to be mono SM-resistant and less likely to be INH- and RIF-resistant. The most common mutations were katG (S315T), rpoB (S450L), rpsL (K43R), and embB (M306V). CONCLUSIONS: The proportion of mono-SM-resistant TB among new patients was higher.
