Researchers at university of Toronto have found that certain white blood cells in the liver can go rogue and can cause insulin resistance in patients with non alcoholic fatty liver disease.
Liver CD8+ T cells play an important role in fighting viral infections. But as fat accumulates in liver with obesity or NAFLD, they are programmed to increase blood sugar and worsen insulin resistance.
Once activated CD8+T cells release inflammatory molecules called cytokines that cause inflammation . This inflammatory state is intimately linked to insulin resistance.
This pro inflammatory response can disrupt or block insulin signalling to liver. This can cause liver to continue pour more sugar into blood stream and resulting in inability to regulate blood sugar.
The research tends to suggest that inflammation is emerging to be a major mediator of insulin resistance and mal function of liver immune system may be developing link.