Study: Oysters Appear to Fight Cancer

OCEAN SPRINGS -- A compound found in oysters could help prevent and treat cancer, particularly breast cancer, a professor from Louisiana State University said Tuesday.

Jack Losso, Ph.D. and an associate professor in the food science department, has been doing research in this area since 2001 and has found that ceramide, a lipid found in oysters, prevents blood from getting to tumors in the body. Without nutrients from blood, cancer cells can't multiply.

"The idea is that if you block the blood vessels, tumors can stay there for many years but won't cause disease," he said. "Also, it's been shown that ceramides, when blended with cancer cells, kills the cancer cells but doesn't hurt the normal cells, which is good."

Losso spoke at the Gulf and South Atlantic States Shellfish Conference at the Gulf Hills Hotel and Conference Center. His research has focused mostly on breast cancer, but he said he believes ceramides can help with colon and prostate cancer, too.

As part of his research, Losso extracted ceramide from oysters and mixed the lipids with estrogen-dependent cancer cells, and the cancer cells died within 24 hours to 48 hours.

"As the concentration went up, the network was completely destroyed," Losso said, adding that the viability of cancer cells goes down each day that they are mixed with the ceramides.

Losso said oysters are high in protein and iron and low in calories, so they are healthy. He said, though, that to get the most benefit, people should eat oysters as part of stews and gumbo. Fried oysters don't provide as much benefit, he said. He hopes that his research will help prevent and treat cancer but he also hopes to market the oyster industry along the Gulf Coast to other parts of the world. "There's been national and international interest among scientists, oyster growers, processors and restauranteurs," he said. "We want to make sure we help the industry available on the Gulf Coast." Losso has tested oysters from New Orleans. The next step is to look at availability, seasonal variation and levels of ceramides in oysters in other parts of Louisiana, as well as Texas, Mississippi, Alabama and Florida.
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