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Ion Transport Modulators as Antimycobacterial Agents.

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FDA-approved drugs like furosemide and phenytoin show potential against tuberculosis (TB) bacteria. Some drugs also enhance rifampicin

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Area of Science:

  • Microbiology
  • Pharmacology
  • Infectious Diseases

Background:

  • Tuberculosis (TB) treatment requires novel and safer therapeutic strategies.
  • Existing TB therapies face challenges including drug resistance and side effects.
  • Ion transport modulators are FDA-approved drugs with potential antimicrobial applications.

Purpose of the Study:

  • To evaluate the efficacy of FDA-approved ion transport modulators against *Mycobacterium bovis* BCG.
  • To assess the synergistic effects of these modulators with rifampicin for TB treatment.

Main Methods:

  • *Mycobacterium bovis* BCG (both free and intracellular) were cultured with various FDA-approved drugs.
  • Bacterial growth and viability were quantified after 3 to 9 days of exposure.
  • Synergistic effects with rifampicin were assessed using similar culture conditions.

Main Results:

  • Furosemide, phenytoin, and drug Y reduced both free and intracellular *M. bovis* BCG counts.
  • Diazoxide, HCTZ, verapamil, and drug X showed efficacy against intracellular bacteria.
  • Several drugs demonstrated synergistic effects, enhancing rifampicin's bactericidal activity against extracellular and intracellular bacteria.

Conclusions:

  • Ion transport modulators exhibit antimycobacterial properties.
  • These drugs are promising candidates for adjunct therapy in tuberculosis treatment regimens.
  • Further investigation into these modulators could lead to improved TB interventions.