title: Pharmacokinetics and biological activity of the new intermediate-acting insulin L-SNC).
abstract: To assess pharmacokinetics and biological activity of the new L-SNC insulin (Berlin-Chemie, a low immunogenic pork insulin in neutral solution purified by chromatography) ten healthy male subjects were connected to the BIOSTATOR. After an overnight fast 0.4 U of L-SNC insulin per kg body weight were injected subcutaneously in the thigh of each individual. Plasma insulin concentrations rose gradually reaching their maximum values after 8 hours. According to C-peptide levels there was some inhibition of endogenous insulin secretion. For the evaluation of insulin action we used the closed loop system (BIOSTATOR) which was transformed in its function into a glucose controlled dextrose infusion system. The amount of glucose delivered by the BIOSTATOR in order to maintain blood glucose steady state concentrations at the "basal" level was taken as a measure of biological activity of the injected insulin. The glucose infusion rate increased after insulin administration, reaching statistical significance after 3 hr. The maximum effect of L-SNC insulin was observed between 5 and 12 hours after injection. The overall duration of action of more than 16 hours meets the increasing need for insulin in the early morning in many diabetic patients. Therefore, L-SNC insulin should be recommended for intensified conventional insulin therapy to cover the night and to prevent dawn phenomenon in insulin dependent diabetics.
authors.affiliation: Central Institute of Diabetes Gerhardt Katsch, I. Clinical Department, Karlsburg/GDR.
authors.forename: B
authors.initials: B
authors.lastname: Schulz
authors.forename: R
authors.initials: R
authors.lastname: Menzel
authors.forename: K P
authors.initials: KP
authors.lastname: Ratzmann
authors.forename: P
authors.initials: P
authors.lastname: Heinke
mesh_terms: D000328:Adult; D001786:Blood Glucose / Q000032:analysis; D002096:C-Peptide / Q000097:blood; D005227:Fatty Acids / Q000097:blood; D005990:Glycerol / Q000097:blood; D006801:Humans; D007328:Insulin / Q000493:pharmacokinetics* / Q000494:pharmacology; D008297:Male
chemical_list: D001786:Blood Glucose; D002096:C-Peptide; D005227:Fatty Acids; D007328:Insulin; D005990:Glycerol