Abstract.
In addition to increased glycosylation of hemoglobin, abnormalities of other heme proteins such as cytochrome P-450 might also occur in patients with insulin-dependent diabetes mellitus. Antipyrine is a useful marker drug for cytochrome P-450 dependent hepatic drug metabolism. Antipyrine kinetics and urinary excretion of antipyrine metabolites were measured in 14 patients with insulin-dependent diabetes mellitus in poor metabolic control. Improvement in diabetic control in 9 patients, as measured by more normal HbA1 values, led to normalization of plasma antipyrine half-time (t½) and metabolism: the mean antipyrine t½ slowed from 4.7±0.2 (sem) initially to 7.8±0.3 h in these 9 patients and was thus nearly identical to that of normal subjects 8.6±1.0. Antipyrine plasma clearance improved in the 9 diabetic patients whose diabetic control improved. The apparent volume of distribution was normal on both occasions in the diabetic patients. These findings provide a new argument for tight metabolic control in patients with insulin-dependent diabetes mellitus.
Mortality of Type 1 (insulin-dependent) diabetes mellitus in Denmark: A study of relative mortality in 2930 Danish type 1 diabetic patients diagnosed from 1933 to 1972
