GCG and diabetes mellitus: Glucagon controls lower levels of serum glucose, as evidenced by the exacerbations of daily glucose fluctuations after total pancreatectomy (pancreatogenic DM), as compared to the diabetic patients in whom the glucagon secretion is preserved.[4,22,23] We assumed that the end-result of the complex glucose control networks were daily serum glucose fluctuations, which were quantified using ΔSG in the present study.