title: Influence of metabolic control of insulin-dependent diabetes on plasma nucleotide levels (cAMP, cGMP) during bicycle exercise.
abstract: Plasma concentrations of cyclic nucleotides (cAMP, cGMP) were measured before and during bicycle exercise in 8 well-controlled (mean pre-exercise blood glucose 5.3 mmol/l; HbA1 8.6%) and 8 moderately controlled (mean pre-exercise blood glucose 12.2 mmol/l; HbA1 10.8%) patients aged 18-32 years with insulin-dependent diabetes mellitus (IDDM) and in a group of non-diabetic control subjects matched for age and sex. Pre-exercise plasma cAMP concentrations and the rise with exercise were similar in all study groups. Significantly lower resting cGMP levels were found in well-controlled IDDM patients (3.5 +/- 0.3 pmol/ml, mean +/- SEM) compared to controls (5.6 +/- 1.1 pmol/ml; p less than 0.05) and moderately controlled IDDM patients (5.6 +/- 1.0 pmol/ml; p less than 0.05). By contrast, plasma cGMP levels increased during exercise in the diabetics but not in the controls. These findings indicate a significant difference in responses of plasma cGMP to exercise between IDDM patients and controls.
mesh_terms: D000293:Adolescent; D000328:Adult; D000242:Cyclic AMP / Q000097:blood*; D006152:Cyclic GMP / Q000097:blood*; D003922:Diabetes Mellitus, Type 1 / Q000097:blood*; D004837:Epinephrine / Q000097:blood; D005260:Female; D006801:Humans; D008297:Male; D009638:Norepinephrine / Q000097:blood; D005082:Physical Exertion
chemical_list: D000242:Cyclic AMP; D006152:Cyclic GMP; D009638:Norepinephrine; D004837:Epinephrine