Residual B-cell function in type 1 (insulin-dependent) diabetes mellitus: its relation to clinical and metabolic features

Acta Diabetol Lat. Oct-Dec 1984;21(4):375-83. doi: 10.1007/BF02582092.


The aim of the present study was to investigate whether or not residual B-cell function could be related to insulin sensitivity as well as to duration of disease, insulin requirement, and indices of metabolic control in a population of Type 1 (insulin-dependent) diabetic patients. A positive correlation was found between fasting C-peptide and age at onset of diabetes, whereas a negative relationship occurred between C-peptide and duration of disease. Fasting C-peptide negatively correlated also to mean daily plasma glucose, 24-h glycosuria, and fasting free fatty acid concentration. Moreover, a negative correlation was found between C-peptide and daily insulin requirement. Conversely, a positive relationship occurred between C-peptide levels and the parameter we used for estimating insulin sensitivity, i.e. glucose disappearance rate after i.v. insulin injection. These results once more emphasize the importance of residual B-cell function in Type 1 (insulin-dependent) diabetes mellitus, and suggest that the residual endogenous insulin secretion might play an important role in glucose homeostasis of Type 1 diabetes by influencing the sensitivity to insulin.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Blood Glucose / metabolism
  • C-Peptide / blood
  • Diabetes Mellitus, Type 1 / drug therapy
  • Diabetes Mellitus, Type 1 / metabolism
  • Diabetes Mellitus, Type 1 / physiopathology*
  • Fasting
  • Fatty Acids, Nonesterified / blood
  • Female
  • Glucose / metabolism
  • Glycosuria / metabolism
  • Humans
  • Insulin / administration & dosage
  • Insulin / therapeutic use
  • Islets of Langerhans / physiopathology*
  • Male
  • Middle Aged


  • Blood Glucose
  • C-Peptide
  • Fatty Acids, Nonesterified
  • Insulin
  • Glucose