Cited by 1,651Diabetes Treatment and ManagementPancreatic function and diabetesDiabetes Management and Research

The DOI matches its Crossref record; 42 of the 42 references it cites were found in a registry or an index.

Preserved incretin activity of glucagon-like peptide 1 [7-36 amide] but not of synthetic human gastric inhibitory polypeptide in patients with type-2 diabetes mellitus

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Nauck, M A, Heimesaat, M M, Orskov, C, Holst, J J, Ebert, R, Creutzfeldt, W·1993·Journal of Clinical Investigation

Abstract

In type-2 diabetes, the overall incretin effect is reduced. The present investigation was designed to compare insulinotropic actions of exogenous incretin hormones (gastric inhibitory peptide [GIP] and glucagon-like peptide 1 [GLP-1] [7-36 amide]) in nine type-2 diabetic patients (fasting plasma glucose 7.8 mmol/liter; hemoglobin A1c 6.3 +/- 0.6%) and in nine age- and weight-matched normal subjects. Synthetic human GIP (0.8 and 2.4 pmol/kg.min over 1 h each), GLP-1 [7-36 amide] (0.4 and 1.2 pmol/kg.min over 1 h each), and placebo were administered under hyperglycemic clamp conditions (8.75 mmol/liter) in separate experiments. Plasma GIP and GLP-1 [7-36 amide] concentrations (radioimmunoassay) were comparable to those after oral glucose with the low, and clearly supraphysiological with the high infusion rates. Both GIP and GLP-1 [7-36 amide] dose-dependently augmented insulin secretion (insulin, C-peptide) in both groups (P < 0.05). With GIP, the maximum effect in type-2 diabetic patients was significantly lower (by 54%; P < 0.05) than in normal subjects. With GLP-1 [7-36 amide] type-2 diabetic patients reached 71% of the increments in C-peptide of normal subjects (difference not significant). Glucagon was lowered during hyperglycemic clamps in normal subjects, but not in type-2 diabetic patients, and further by GLP-1 [7-36 amide] in both groups (P < 0.05), but not by GIP. In conclusion, in mild type-2 diabetes, GLP-1 [7-36 amide], in contrast to GIP, retains much of its insulinotropic activity. It also lowers glucagon concentrations.

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  1. [45]45. Creutzfeldt, W., and U. R. Folsch. 1983. Delaying Absorption as a Thera- peutic Principle in Metabolic Disease. Georg-Thieme-Verlag, Stuttgart.

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Metadata

Authors
Nauck, M. A., Heimesaat, M. M., Orskov, C., Holst, J. J., Ebert, R., & Creutzfeldt, W.
Affiliations
  • University of Göttingen (DE)
  • University of Copenhagen (DK)
  • Rigshospitalet (DK)
Venue
Journal of Clinical Investigation
Published
1993-01-01
Volume
91
Issue
1
Pages
301-307
ISSN
0021-9738 (ISSN-L)
OpenAlex
W1969932276
Cited by
1,651
References
41
Citations by year
2026: 45 · 2025: 51 · 2024: 63 · 2023: 63 · 2022: 57 · 2021: 57 · 2020: 50 · 2019: 70 · 2018: 50 · 2017: 49 · 2016: 71 · 2015: 62 · 2014: 75 · 2013: 84 · 2012: 59
FWCI
16.84
Type
journal article
Language
en
Open access
Locations
  • Journal of Clinical Investigation (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (submittedVersion)
Funders
Deutsche Forschungsgemeinschaft (203/2-1)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Treatment and Management
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Pancreatic function and diabetes
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Management and Research
Keywords
glucagon-like peptide-1, GLP-1(7-36)amide, glucose-dependent insulinotropic polypeptide, type 2 diabetes, insulin secretion, C-peptide, glucagon, hyperglycemic clamp, incretin resistance
MeSH terms
Insulin Secretion, Blood Glucose, C-Peptide, Diabetes Mellitus, Type 2, Glucagon-Like Peptides, Female, Gastric Inhibitory Polypeptide, Glucagon, Glycated Hemoglobin, Humans, Insulin, Kinetics, Male, Middle Aged, Peptide Fragments, Protein Precursors, Reference Values, Time Factors, Glucose Clamp Technique, Glucagon-Like Peptide 1

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