Diabetes, Vol 34, Issue 2 166-173, Copyright © 1985 by American Diabetes Association

ARTICLES

Effect of insulin antibodies on insulin pharmacokinetics and glucose utilization in insulin-dependent diabetic patients

WK Waldhausl, P Bratusch-Marrain, V Kruse, I Jensen, P Nowotny and H Vierhapper

To determine the impact of insulin-binding antibodies on total (TIRI) and free insulin (FIRI) as well as on insulin sensitivity, 10 insulin-dependent diabetic patients (IDDM) with poststimulatory C-peptide less than 100 pmol/L and an insulin binding capacity (IBC) between less than 1 and 294 micrograms/L serum were studied during and after a 1-h nonprimed, constant-rate insulin infusion (study 1: 0.057 U/kg body wt, study 2: 0.286 U/kg body wt). Euglycemia was maintained by variable glucose infusion. Control studies were performed in 5 healthy subjects. Basal TIRI (mU/L) was lowest in healthy subjects (16 +/- 1 [SE]) and elevated in diabetic patients (IBC less than 25 micrograms/L: 72 +/- 11, IBC greater than 25 micrograms/L: 1772 +/- 842), whereas serum concentrations of FIRI were considerably smaller but still two- to threefold greater (P less than 0.01) in the patients than in healthy subjects (13 +/- 1). After intravenous (i.v.) insulin administration, almost identical increments in serum TIRI were seen in healthy subjects and in diabetic patients with low IBC (less than 25 micrograms/L), whereas those with high IBC (greater than 25 micrograms/L) had a heterogeneous response.(ABSTRACT TRUNCATED AT 250 WORDS)
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