IGF1 and Hyperglycemia: In a recent investigation undertaken by our group, adult mice with partial IGF-1 showed a decrease in the expression of genes involved in glucose metabolism (phosphoenolpyruvate carboxylase-1, glucose-6-phosphatase, pyruvate dehydrogenase kinase isoenzyme-4, and ATP-citrate lyase), resulting serious hyperglycaemia [164].