title: C-peptide response in patients on insulin therapy.
abstract: This study was undertaken to document clinical features and presentation of Type I diabetes and to study beta cell response in these patients. It provides data on 30 insulin treated patients. Type I diabetes presents most commonly in the 20-40 year age group. A positive family history in first degree relatives was noted in 40%. The commonest complications were retinopathy (63%) and peripheral neuropathy (53%). Proteinuria (10%), ischaemic heart disease (13%) and peripheral vascular disease (13%) were less common. Three kinds of response to C-peptide were noted: 1) no response 2) blunted response (below the normal range) and 3) peak response to glucose within the low normal range. Group 3 probably represents Type II insulin treated diabetes. There was poor correlation between fasting blood glucose and basal or peak C-peptide response, or with duration or complications of diabetes. C-peptide response may be used to differentiate Type I from Type II diabetes.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000937:Antigen-Antibody Reactions; D000941:Antigens / Q000276:immunology*; D001786:Blood Glucose / Q000378:metabolism; D002096:C-Peptide / Q000276:immunology*; D002648:Child; D003922:Diabetes Mellitus, Type 1 / Q000150:complications / Q000188:drug therapy / Q000235:genetics / Q000276:immunology* / Q000378:metabolism; D016883:Diabetic Ketoacidosis / Q000209:etiology; D005215:Fasting; D005260:Female; D006801:Humans; D007328:Insulin / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D013997:Time Factors
chemical_list: D000941:Antigens; D001786:Blood Glucose; D002096:C-Peptide; D007328:Insulin