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Scientists grow human liver tissue to be used for transplantation
Date:1/20/2011

A new study reports on the success of growing human liver cells on resorbable scaffolds made from material similar to surgical sutures. Researchers suggest that this liver tissue could be used in place of donor organs during liver transplantation or during the bridge period until a suitable donor is available for patients with acute liver failure. Findings of this study appear in the February issue of Liver Transplantation, a journal published by Wiley-Blackwell on behalf of the American Association for the Study of Liver Diseases.

As of January 2011, more than 16,000 Americans are on the waiting list to receive a suitable liver according to data from the Organ Procurement and Transplantation Network. Liver cell (hepatocyte) transplantation offers a possible solution in overcoming the organ shortage. In addition, liver cells have excellent regenerative potential making liver cell transplantation a viable therapeutic approach for patients with metabolic defects or fulminant hepatic failure as the native liver is preserved while liver dysfunction may resolve as regeneration occurs.

Dr. Joerg-Matthias Pollok, Head of the Laboratory for Tissue Engineering and Cell Transplantation, Department of Hepatobiliary and Transplantation Surgery at the University Medical Center in Hamburg, Germany explains, "Currently isolated liver cells are used for liver cell transplantation, but these cells suffer during cell isolation and cryopreservation, which is one reason there is limited success with this type of transplant procedure." In applying their tissue engineering approach, the German researchers were able to successfully create new liver tissue providing a potential solution to the obstacles challenging liver cell transplantation.

The team isolated liver cells from 12 human liver specimens with a viability of 82%. After a two-day culture period, liver cells formed tightly packed cellular aggregates, called spheroids, and took on a liver-
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Contact: Dawn Peters
healthnews@wiley.com
781-388-8408
Wiley-Blackwell
Source:Eurekalert

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