PMID- 3896215 OWN - NLM STAT- MEDLINE DCOM- 19850925 LR - 20190824 IS - 0004-8291 (Print) IS - 0004-8291 (Linking) VI - 15 IP - 2 DP - 1985 Apr TI - Insulin secretion and immuno-genetic markers in diabetics with 'secondary failure' of oral hypoglycemic agents. PG - 209-12 AB - 'Secondary failure' of oral hypoglycemics, in non-insulin dependent diabetics, has been attributed to dietary non-compliance, inadequate drug dosage, metabolic stress, or true drug failure. Progressive loss of beta cell function is a suggested mechanism for true drug failure but on the basis of little documented evidence. In view of this, we have measured basal and glucagon-stimulated C-peptide levels, human leukocyte antigen (HLA) types, and islet cell antibodies in 20 non-insulin dependent diabetics with 'secondary failure' of oral agents. There were 16 females and four males with a mean ideal body weight of 1.30 units and mean duration of diabetes of 9.5 years. Fasting insulin (mean +/- SD: 15.1 +/- 10.6 mU/l) and fasting C-peptide (2.3 +/- 1.2 micrograms/l) were normal or slightly elevated in all but one patient. Mean C-peptide increased from 2.3 +/- 1.2 micrograms/l to 3.5 +/- 2.2 micrograms/l (152% over basal) 6 minutes after 1 mg i.v. glucagon. In 15 patients the C-peptide response was greater than 130% of basal. Islet cell cytoplasmic antibodies were detected in only two patients. The distribution of HLA types was not significantly different from a control population, with no increase in DR3 or DR4. Thus, absolute insulin deficiency is uncommon in non-insulin dependent diabetics with 'secondary failure' of oral hypoglycemic agents and such patients do not exhibit the immuno-genetic markers of insulin-dependent diabetes. FAU - Colman, P G AU - Colman PG FAU - Harrison, L C AU - Harrison LC FAU - Tait, B D AU - Tait BD LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Australia TA - Aust N Z J Med JT - Australian and New Zealand journal of medicine JID - 1264322 RN - 0 (Autoantibodies) RN - 0 (Blood Glucose) RN - 0 (C-Peptide) RN - 0 (HLA-DR Antigens) RN - 0 (Histocompatibility Antigens Class II) RN - 0 (Hypoglycemic Agents) RN - 0 (Insulin) RN - 9007-92-5 (Glucagon) SB - IM MH - Administration, Oral MH - Adult MH - Aged MH - Autoantibodies/analysis MH - Blood Glucose/analysis MH - C-Peptide/blood MH - Diabetes Mellitus, Type 2/blood/*drug therapy/genetics/immunology MH - Female MH - Glucagon/pharmacology MH - HLA-DR Antigens MH - Histocompatibility Antigens Class II/*analysis MH - Humans MH - Hypoglycemic Agents/*administration & dosage MH - Insulin/*metabolism MH - Insulin Secretion MH - Islets of Langerhans/immunology MH - Male MH - Middle Aged EDAT- 1985/04/01 00:00 MHDA- 1985/04/01 00:01 CRDT- 1985/04/01 00:00 PHST- 1985/04/01 00:00 [pubmed] PHST- 1985/04/01 00:01 [medline] PHST- 1985/04/01 00:00 [entrez] AID - 10.1111/j.1445-5994.1985.tb04008.x [doi] PST - ppublish SO - Aust N Z J Med. 1985 Apr;15(2):209-12. doi: 10.1111/j.1445-5994.1985.tb04008.x.