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'Repurposed' Anti-Parasite Drug Shows Promise as New Tuberculosis Treatment, Research Finds

A well-established family of drugs used to treat parasitic diseases is showing surprising potential as a therapy for tuberculosis (TB), according to new research from University of British Columbia microbiologists.

The findings, published online this week in the journal Antimicrobial Agents and Chemotherapy, are based on in vitro tests of the avermectin family of drugs. Discovered nearly 40 years ago, the drugs are commonly used in the developing world to eliminate the parasitic worms that cause river blindness and elephantiasis but have been thought to be ineffective against bacterial diseases. The UBC study shows that in the lab, the drugs actually killed the bacteria that cause TB, including drug resistant forms.

"These drugs are cheap, routinely produced by pharmaceutical companies, and, in many cases, approved for humans use," says UBC researcher Santiago Ramón-García, a co-author on the paper. "So the jump from lab bench to clinic could be much quicker."

"In addition, the drug concentrations effective in vitro indicate members of this family might be very valuable additions to the small repertoire of drugs we have to fight multi-drug resistant TB, which have very low probabilities of being cured."
 
 

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