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Study suggests antibody therapy can be used to treat liver disease

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Solna | February 12, 2023 12:03:01 AM IST
There is currently no medication available to treat non-alcoholic liver disease, which affects many type 2 diabetes patients and can develop into more serious liver ailments. A therapeutic option for the treatment of fatty liver has been identified in a study led by Karolinska Institute researchers.

The study published in the Journal of Hepatology, indicates that an antibody that blocks the protein VEGF-B presents a possible therapeutic option for liver-disease" fatty liver disease.

"Fatty liver is associated with several serious and sometimes fatal diseases," said the study's first author Annelie Falkevall, researcher at the Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Sweden. "With the therapeutic principle that we've developed, it might be possible to prevent fatty liver and hopefully lower the risk of liver failure and terminal liver cancer."

For decades, obesity and overweight have been a common global disease that, amongst other problems, has caused a sharp rise in the incidence of type 2 diabetes. According to the Swedish Diabetes Association, there are 500,000 cases of diabetes in Sweden alone, of which 85 to 90 percent are type 2.

Significant rise in liver cancer risk

Chronic overweight and type 2 diabetes increase the risk of non-alcoholic liver-disease" fatty liver disease (NAFLD), which is the most common cause of chronic liver diseases, such as liver failure and liver cancer, in Europe and the U.S.

White adipose tissue has a remarkable ability to store energy in the form of lipids, but in the case of chronic obesity, and often type 2 diabetes, it is not enough and the concentration of fatty acids in the blood increases. They are therefore stored elsewhere, including in the liver. Not only does the accumulation of fat in the liver interfere with the secretion of glucose and lead to insulin resistance, but it also increases the danger of permanent damage to one of the body's most important organs.

NAFLD affects over 100 million adults, and previous research indicates a 17-fold higher risk of liver cancer in people with NAFLD. In people with type 2 diabetes, the incidence of NAFLD is 25 to 29 percent. There are at present no approved drugs for treating NAFLD.

Antibody blocks the release of fatty acids

Researchers at Karolinska Institutet, CIBERDEM and CIBEROBN in Spain, CSL Behring in the U.S., and CSL Innovation in Australia have now studied a new method for limiting the development of fatty liver.For the study, the researchers had access to a drug candidate in the form of an antibody to the protein VEGF-B (Vascular Endothelial Growth Factor B), which controls the release of fatty acids from white adipose tissue.

"We've identified a new method of treating liver-disease" fatty liver disease that involves keeping the fatty acids in the adipose tissue so that they don't leak out and accumulate in the liver," said the study's corresponding author Ulf Eriksson, professor at Department of Medical Biochemistry and Biophysics, Karolinska Institutet. "Our results show that the pharmacological blocking of the VEGB-B signal pathway in mice prevents the accumulation of fat in the liver and reduces the risk of NAFLD."

The study was conducted on normal and genetically modified mice that received different diets and were treated with the drug candidate. The researchers also studied adipose tissue from 48 patients due to have bariatric surgery. One half of the group had NAFLD, one half did not. Their results reveal a clear correlation between the level of VEGB-B signalling in white adipose tissue and the presence of NAFLD.

"The next step in taking this exciting drug candidate further is to include it in a clinical development programme," said Professor Eriksson. (ANI)

 
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