Related Experiment Videos
C-peptide in diabetic children after stimulation with clucagon compared with fasting C-peptide levels in non-diabetic
Insights
Even small amounts of remaining beta cell function, indicated by C-peptide levels, are important for metabolic control in children with juvenile diabetes.
Area of Science:
- Endocrinology
- Metabolic Research
Background:
- Fasting serum C-peptide and insulin levels are key indicators of pancreatic beta cell function.
- Understanding beta cell function is crucial for managing diabetes, especially in pediatric populations.
Purpose of the Study:
- To assess C-peptide and insulin levels in non-diabetic adolescents.
- To investigate the C-peptide response to glucagon in insulin-dependent juvenile diabetics.
Main Methods:
- Measured fasting serum C-peptide and total immunoreactive insulin (IRI) in 38 non-diabetic subjects (6-22 years).
- Administered glucagon challenge to 10 insulin-dependent juvenile diabetics with prior measurable C-peptide.
- Assessed metabolic control via daily urinalysis.
Main Results:
- Non-diabetic C-peptide levels ranged from 0.22-0.73 pmol/ml, with a trend towards higher values during puberty.
- IRI levels varied between 0-31 mU/ml.
- A slight but significant C-peptide rise post-glucagon was observed in 3 diabetic patients with excellent or good metabolic control.
Conclusions:
- Trace amounts of residual beta cell function, reflected by C-peptide, may significantly contribute to metabolic control in juvenile diabetes.
- Preservation of even minimal beta cell function is clinically relevant in managing insulin-dependent diabetes mellitus.
Abstract:
Fasting serum C-peptide and total immunoreactive insulin (IRI) were determined in 38 non-diabetic children and adolescents 6-22 years old. C-peptide varied between 0.22-0.73 pmol/ml (mean +/- SD, 0.45 +/- 0.11). There was a tendency to higher values during puberty. No difference was found between subjects with or without a family history for diabetes. IRI varied between 0-31 millimcron/m1 (mean +/- SD, 11.3 +/- 6.5). The C-peptide response to glucagon was studied in 10 insulin dependent juvenile diabetics 11-19 years old, who had had measurable amounts of fasting C-peptide on some occasions during the previous years. Duration of diabetes varied between 4-12 years. A slight but significant rise in C-peptide level occurred in 3 patients. Their metabolic control estimated on the basis of daily urinalysis was "excellent" or "good". The results support the hypothesis that even trace remnants of the beta cell function may be of importance for the metabolic control in juvenile diabetes.