Acetaminophen-Induced Liver Damage May Be Thwarted By Grape Seed Extract

Working with colleagues at Creighton University, Ray pre-exposed male mice to non-toxic doses of the grape seed extract, followed either three or seven days later by acetaminophen at dose levels known to be toxic to the liver. Using several different blood, tissue and DNA measures, the seven-day pre-exposure to the grape seed extract appeared to afford what Ray describes as "dramatic protection" against liver damage caused by the toxic doses of acetaminophen.

Ray, who will present his results on April 21 at the Experimental Biology 98 meetings in San Francisco, conducted previous research to help define how acetaminophen causes cell death in the liver by affecting the DNA of the cells, contributing both to apoptosis (programmed cell death that occurs during cell renewal and the aging process) and necrosis (accidental or unprogrammed death of cells in response to physical injury or exposure to toxic substances.

"The results of this study show that the novel grape seed proanthycyanidin extract is a natural chemoprotectant and may be useful in defending cells against various environmental toxins," Ray explained.