Abstract

Mycobacterium tuberculosis the causative agent of tuberculosis has many intrinsic features which enable it to evade the activity of antibiotics. Many studies have been carried out to understand the mechanisms of drug resistance by this organism. An attempt was made in this write up to elucidate the various mechanism of drug resistance in M. tuberculosis, including its innate impermeable cell wall and mutation of specific genes. Drug resistance in Mycobacterium tuberculosis is not a product of a single homogeneous genetic unit. Rather it is as a result of frequent mutation in various genes which encode for resistance to antibiotics. Also, the slow metabolism during a prolonged dormant stage greatly enhances it resistance to drug, the waxy impermeable cell wall with the presence of numerous efflux pump are essential for withstanding the potency of antibiotics. Having an adequate knowledge on the molecular mechanisms of drug resistance in M. tuberculosis may be helpful in exploring new targets for drug development.

Highlights

  • SummaryMycobacterium tuberculosis the causative agent of tuberculosis has many intrinsic features which enable it to evade the activity of antibiotics

  • Tuberculosis (TB) is an infectious disease caused by Mycobacterium tuberculosis

  • A type of TB resistance in people who are originally infected by the antibiotics resistant strain but have not used any anti-TB chemotherapy is regarded as the primary resistance, while a situation in which resistance developed due to inadequacy of treatment is referred to as acquired resistance [2,3]

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Summary

Summary

Mycobacterium tuberculosis the causative agent of tuberculosis has many intrinsic features which enable it to evade the activity of antibiotics. Many studies have been carried out to understand the mechanisms of drug resistance by this organism. An attempt was made in this write up to elucidate the various mechanism of drug resistance in M. tuberculosis, including its innate impermeable cell wall and mutation of specific genes. Drug resistance in Mycobacterium tuberculosis is not a product of a single homogeneous genetic unit. Rather it is as a result of frequent mutation in various genes which encode for resistance to antibiotics. The slow metabolism during a prolonged dormant stage greatly enhances it resistance to drug, the waxy impermeable cell wall with the presence of numerous efflux pump are essential for withstanding the potency of antibiotics. Having an adequate knowledge on the molecular mechanisms of drug resistance in M. tuberculosis may be helpful in exploring new targets for drug development

Introduction
Impermeable Cell Wall
Slow Metabolism Mechanism
Possession of Numerous Efflux Pumps
Molecular Mechanisms
Findings
Conclusion
Full Text
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