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Natural compound blocks hepatitis C infection
Date:1/5/2010

ls testing quercetin for safety and efficacy against sarcoidosis, asthma and glucose absorption in obesity and diabetes.

"Because Quercetin targets cellular proteins rather than viral proteins, there is less likelihood of developing viral resistance," French said. "Cellular proteins cannot change like viral proteins can."

Many patients in the United States have a type of hepatitis C virus that does not respond to the standard treatments. In these cases, if the virus can't be blocked, end-stage liver disease and, ultimately, death may occur. Once HSP 40 and 70 were identified, French and his team used Quercetin in an attempt to block the proteins and found that the compound "reduced infectious particle production at non-toxic concentrations," according to the study.

"Quercetin may allow for the dissection of the viral life cycle and has potential therapeutic use to reduce virus production with low associated toxicity," the study states.

The UCLA clinical trial will most likely target those with type 1 hepatitis C, which is the non-responsive type prevalent in this country. Only about 50 percent of those with type 1 hepatitis C respond to treatment, French said.

Volunteers with type 1 hepatitis C who opt not to undergo conventional therapies would be recruited for the study. In other studies in other diseases, Quercetin has resulted in no significant side effects, French said.

"A non-toxic treatment for chronic hepatitis C would be great because our current therapies have significant side effects and only a certain percentage of the patient population responds," French said.


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Contact: Kim Irwin
kirwin@mednet.ucla.edu
310-206-2805
University of California - Los Angeles
Source:Eurekalert

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