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Antioxidant improves donated liver survival rate to more than 90 percent
Date:2/25/2013

Researchers from Italy have found that the antioxidant, N-acetylcysteine (NAC), when injected prior to harvesting of the liver, significantly improves graft survival following transplantation. Results published in the February issue of Liver Transplantation, a journal of the American Association for the Study of Liver Diseases (AASLD), suggest that the NAC effect on early graft function and survival is higher when suboptimal organs are used.

A 2010 World Health Organization (WHO) report estimates that 22,000 liver transplants were performed worldwide, with nearly 18,500 from deceased donors. According to the Organ Procurement and Transplantation Network (OPTN) close to 16,000 U.S. patients are currently on the waiting list for a liver. Nearly 18,500 deceased donor transplants were performed between January and October 2012 in the U.S. OPTN reports that roughly 7,000 livers were recovered from deceased donors during the same time period.

"Liver transplantation is the standard treatment for end-stage liver disease," explains lead author Dr. Francesco D'Amico from Padova University in Italy. "Antioxidants such as NAC could potentially reduce damage to deceased donor livers, improving graft function." Studies have shown that ischemia-reperfusion injury (IFI)damage to the liver tissue when blood supply returns to the liver after lack of oxygen (ischemia)often occurs during storage and preservation of donated livers, and impacts early graft function post-transplantation.

For the present study researchers assigned 140 organs to adult candidates with liver disease undergoing their first transplant. An NAC infusion of 30 mg/kg was administered to one hour prior to liver procurement and another infusion of 300 mg (150mg/kg liver weight) through the portal vein before cross-clamping. There were 69 transplant candidates who received an NAC infused organ and 71 patients who had a standard transplant without NAC.

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Contact: Dawn Peters
sciencenewsroom@wiley.com
781-388-8408
Wiley
Source:Eurekalert

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