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Tuberculosis, or TB, is a bacterial infectious disease caused by Mycobacterium tuberculosis. While its primary impact is on the lungs, leading to pulmonary tuberculosis, it can also affect various other organs, a condition referred to as extrapulmonary tuberculosis.
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Medical management of tuberculosis (TB) patients involves a comprehensive approach that includes diagnosis, treatment, and monitoring. The specific strategies can vary depending on the type of tuberculosis (latent or active), the patient's overall health status, and other considerations.
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In Host Mutational Adaptation of Mycobacterium Tuberculosis Complex Strains During Tuberculosis Infection.

Helen Zhang1, Naomi Medina-Jaudes1, Alicia Forcada-Nadal2

  • 1London School of Hygiene and Tropical Medicine, London, United Kingdom.

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|April 28, 2026
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Summary
This summary is machine-generated.

Mutations in Mycobacterium tuberculosis complex (MTBC) reveal adaptations to host defenses and drug resistance. Fluoroquinolone resistance acquisition during treatment is notably frequent, with clinical implications.

Keywords:
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Area of Science:

  • Microbiology
  • Evolutionary Biology
  • Genomics

Background:

  • Tuberculosis (TB) is a leading global infectious disease killer.
  • Mycobacterium tuberculosis complex (MTBC) mutations track bacterial adaptations to host immunity and antibiotics.

Purpose of the Study:

  • Identify frequently mutated genes in MTBC within patients.
  • Understand host-driven adaptations and drug resistance evolution in TB.

Main Methods:

  • Meta-analysis of 5882 MTBC genomes from 1044 patients.
  • Convergent evolution approach to detect mutation hotspots.
  • Estimation of drug resistance acquisition rates during treatment.

Main Results:

  • Identified 21 genes, 25 operons, and 27 promoter regions with significant mutations.
  • Confirmed known drug resistance loci and identified new adaptive genes.
  • Fluoroquinolone resistance increased most rapidly during treatment.

Conclusions:

  • Frequently mutated MTBC genes indicate adaptations for drug resistance and pathogenesis.
  • Newly identified mutations offer insights into TB evolution.
  • High fluoroquinolone resistance rates warrant clinical attention.