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A lab rat -- created in the lab
Date:4/13/2010

It's illegal for health products with medical formulations to be accepted by the U.S. Food and Drug Administration without tests on animals ― a situation that has serious ethical and moral implications. New research in the field of tissue engineering by Prof. Amit Gefen of Tel Aviv University's Faculty of Engineering holds a promise that far fewer lab animals will be needed for the necessary experimental trials.

Dr. Gefen's research into fat cells, published in a recent issue of Tissue Engineering, has led him to conclude that the necessary tissue can be produced from fat, skin, bone and muscle cells. His breakthrough study could have hundreds of applications in the pharmaceutical and medical world.

"Drugs make our lives better, and basic science is needed to push new drugs through clinical trials. But there is no doubt that an untold number of animals are sacrificed in the laboratory setting both in basic research and in applied conditions when testing particular molecules," says Prof. Gefen, who heads TAU's Teaching Laboratory for Cell and Tissue Engineering. As a medical researcher himself, he was dependent on animal trials for testing new hypotheses he developed for living systems ― until recently.

A more efficient road to scientific research

Bridging the worlds of biology and engineering, Prof. Gefen is now using adult rat stem cells ― cells that can be stimulated to create skin, bone, fat and muscle tissue from an animal in a laboratory setting. In his own work on studying the mechanical properties of pressure ulcers, many tissue replications were needed. His new approach no longer requires the sacrifice of large numbers of animals. When an experiment is over, not one animal life has been lost.

The use of engineered tissues, says Prof. Gefen, may also be more scientifically efficient than using those from a living source. "The model we've created offers a very reliable
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Contact: George Hunka
ghunka@aftau.org
212-742-9070
American Friends of Tel Aviv University
Source:Eurekalert  

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