Liver Responsible for Molecular Culprits of Type 2 Diabetes

Researchers in Melbourne, Australia have found that oxygenating chemicals responsible for Type 2 diabetes are produced by the liver.  "We have shown for the very first time that these free radicals inactivate protein tyrosine phosphatases in the liver to activate rogue pathways that promote fatty liver disease and exacerbate the development of obesity and type 2 diabetes."  The article says the radicals are produced as a response to obesity, but I wonder if they may be a cause instead.  The indications are that they are at least a contributor.