Drug Rapamycin may be the Way to Treat Kidney Disease

by Savitha on  January 27, 2010 at 8:21 PM Drug News
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Drug rapamycin may be the answer to treat kidney disease, according to a study at UC Santa Barbara.

Building on past research, the study showed that studies performed on mice are more likely to translate to humans than previously thought.

Worldwide, around 12 million people are affected from the inherited kidney disease known as autosomal-dominant polycystic kidney disease (ADPKD).

The disease is characterized by the proliferation of cysts that eventually debilitate the kidney, causing kidney failure in half of all patients by the time they reach age 50.

Thomas Weimbs, director of the laboratory where the discovery was made, said that currently, no treatment exists to prevent or slow cyst formation, and most ADPKD patients require kidney transplants or lifelong dialysis for survival, explained.

The drug rapamycin, also called sirolimus, is currently used as an immunosuppressant, to help prevent rejection of a new, transplanted kidney.

"While we had previously shown that rapamycin is highly effective in mouse models of polycystic kidney disease, the problem had been that these mice had different genes affected than human patients. Therefore, the question always remained whether rapamycin would be effective in patients, too. Our new study now is the first to show that rapamycin is also highly effective in a new mouse model in which the same gene is affected as in most human patients," said Weimbs.

Currently, there are several clinical trials ongoing internationally to test the safety and efficacy of rapamycin and related drugs in polycystic kidney disease, explained Jonathan Shillingford, first author on the paper.

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