Researchers discover new therapy target for drug-induced liver failure

A new research from a mouse study has suggested that treatments that increase levels of the protein thrombospondin-1 could help the liver recover from an overdose of acetaminophen.

According to the research presented at a meeting, Acetaminophen, a commonly used pain reliever, and fever reducer is the leading cause of quickly developing, or acute, liver failure in the United States.

“The only treatment available now for acetaminophen overdose must be administered early before significant liver injury occurs,” said the researcher.

“We are working to identify new drug targets to improve treatment options and reduce the need for liver transplantation, which is often the only option for patients with acute liver failure due to drug toxicity,” he added.

Researchers found that mice with acute liver failure from acetaminophen toxicity had higher levels of thrombospondin-1 than mice with normal liver function.

When they administered acetaminophen to genetically modified mice that lack thrombospondin-1, the liver injury and loss of liver function was more severe compared to unmodified mice.

The researchers also observed impaired liver regeneration and increased cell death in the mice without thrombospondin-1.

“Our study is the first to investigate thrombospondin-1 during acetaminophen toxicity. We were able to identify cell communication pathways that do not work properly during acetaminophen-induced liver injury and thus lead to worse outcomes,” said the researcher.

Next, the researchers plan to give mice different drug treatments that manipulate thrombospondin-1 to find out which treatment might be suited for potential clinical studies.They also plan to examine patients with acetaminophen-induced acute liver failure to determine if their thrombospondin-1 findings from mice hold true in people.

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