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GLP-1 secretion is regulated by IL-6 signalling: a randomised, placebo-controlled study.
JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift)
ID 4614340
Author(s) Ellingsgaard, Helga; Seelig, Eleonora; Timper, Katharina; Coslovsky, Michael; Soederlund, Line; Lyngbaek, Mark P; Wewer Albrechtsen, Nicolai J; Schmidt-Trucksäss, Arno; Hanssen, Henner; Frey, Walter O; Karstoft, Kristian; Pedersen, Bente K; Böni-Schnetzler, Marianne; Donath, Marc Y
Author(s) at UniBasel Schmidt-Trucksäss, Arno
Year 2020
Title GLP-1 secretion is regulated by IL-6 signalling: a randomised, placebo-controlled study.
Journal Diabetologia
Volume 63
Number 2
Pages / Article-Number 362-373
Keywords Diabetes; Exercise; Glucagon-like peptide-1; Interleukin-6; Obesity

IL-6 is a cytokine with various effects on metabolism. In mice, IL-6 improved beta cell function and glucose homeostasis via upregulation of glucagon-like peptide 1 (GLP-1), and IL-6 release from muscle during exercise potentiated this beneficial increase in GLP-1. This study aimed to identify whether exercise-induced IL-6 has a similar effect in humans.; In a multicentre, double-blind clinical trial, we randomly assigned patients with type 2 diabetes or obesity to intravenous tocilizumab (an IL-6 receptor antagonist) 8 mg/kg every 4 weeks, oral sitagliptin (a dipeptidyl peptidase-4 inhibitor) 100 mg daily or double placebos (a placebo saline infusion every 4 weeks and a placebo pill once daily) during a 12 week training intervention. The primary endpoints were the difference in change of active GLP-1 response to an acute exercise bout and change in the AUC for the concentration-time curve of active GLP-1 during mixed meal tolerance tests at baseline and after the training intervention.; Nineteen patients were allocated to tocilizumab, 17 to sitagliptin and 16 to placebos. During the acute exercise bout active GLP-1 levels were 26% lower with tocilizumab (multiplicative effect: 0.74 [95% CI 0.56, 0.98], p = 0.034) and 53% higher with sitagliptin (1.53 [1.15, 2.03], p = 0.004) compared with placebo. After the 12 week training intervention, the active GLP-1 AUC with sitagliptin was about twofold that with placebo (2.03 [1.56, 2.62]; p < 0.001), while GLP-1 AUC values showed a small non-significant decrease of 13% at 4 weeks after the last tocilizumab infusion (0.87 [0.67, 1.12]; p = 0.261).; IL-6 is implicated in the regulation of GLP-1 in humans. IL-6 receptor blockade lowered active GLP-1 levels in response to a meal and an acute exercise bout in a reversible manner, without lasting effects beyond IL-6 receptor blockade.; NCT01073826.; Danish National Research Foundation. Danish Council for Independent Research. Novo Nordisk Foundation. Danish Centre for Strategic Research in Type 2 Diabetes. European Foundation for the Study of Diabetes. Swiss National Research Foundation.

ISSN/ISBN 1432-0428
Full Text on edoc
Digital Object Identifier DOI 10.1007/s00125-019-05045-y
PubMed ID

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