Promising therapy of XDR-TB/MDR-TB with thioridazine an inhibitor of bacterial efflux pumps

Curr Drug Targets. 2008 Sep;9(9):816-9. doi: 10.2174/138945008785747798.

Abstract

Global rates of pulmonary tuberculosis (TB) continue to increase. Moreover, resistance of the causative organism Mycobacterium tuberculosis to the two most effective anti-TB medications continue to rise. Now, multi-drug resistant TB (MDR-TB) has progressed to extensively drug resistant TB (XDR-TB) - a M. tuberculosis organism that is resistant to the most effective second line drugs available for the treatment of TB. This review provides detailed, significant evidence that supports the use of an old neuroleptic compound, thioridazine (TZ), for the management of MDR-TB and XDR-TB infections and which has been shown to inhibit efflux pumps of bacteria. The argument has been previously presented but no one seems to be listening - and the disease continues unabated when there is a very good probability that the suggested drug will prove to be effective. When the prognosis is poor, available therapy predictably ineffective and death is inevitable, compassionate therapy with TZ should be contemplated. The risks are small and the rewards great.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Antitubercular Agents / pharmacology
  • Bacterial Proteins / antagonists & inhibitors
  • Bacterial Proteins / metabolism
  • Drug Resistance, Multiple, Bacterial / drug effects*
  • Extensively Drug-Resistant Tuberculosis / drug therapy*
  • Extensively Drug-Resistant Tuberculosis / epidemiology
  • Humans
  • Membrane Transport Proteins / drug effects
  • Membrane Transport Proteins / metabolism
  • Mycobacterium tuberculosis / drug effects
  • Thioridazine / pharmacology*
  • Thioridazine / therapeutic use
  • Tuberculosis, Multidrug-Resistant / drug therapy
  • Tuberculosis, Multidrug-Resistant / epidemiology

Substances

  • Antitubercular Agents
  • Bacterial Proteins
  • Membrane Transport Proteins
  • Thioridazine