1. GLP-1 Analog Liraglutide Improves Vascular Function in Polymicrobial Sepsis by Reduction of Oxidative Stress and Inflammation
- Author
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Johanna Helmstädter, Karin Keppeler, Franziska Aust, Leonie Küster, Katie Frenis, Konstantina Filippou, Ksenija Vujacic-Mirski, Simeon Tsohataridis, Sanela Kalinovic, Swenja Kröller-Schön, Matthias Oelze, Markus Bosmann, Thomas Münzel, Andreas Daiber, and Sebastian Steven
- Subjects
glucagon-like peptide-1 (GLP-1) ,incretins ,liraglutide ,peritoneal and polymicrobial sepsis ,cecal ligation and puncture (CLP) ,endothelial dysfunction ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Sepsis causes high mortality in the setting of septic shock. LEADER and other trials revealed cardioprotective and anti-inflammatory properties of glucagon-like peptide-1 (GLP-1) analogs like liraglutide (Lira). We previously demonstrated improved survival in lipopolysaccharide (LPS)-induced endotoxemia by inhibition of GLP-1 degradation. Here we investigate the effects of Lira in the polymicrobial sepsis model of cecal ligation and puncture (CLP). C57BL/6J mice were intraperitoneally injected with Lira (200 µg/kg/d; 3 days) and sepsis induced by CLP after one day of GLP-1 analog treatment. Survival and body temperature were monitored. Aortic vascular function (isometric tension recording), protein expression (immunohistochemistry and dot blot) and gene expression (qRT-PCR) were determined. Endothelium-dependent relaxation in the aorta was impaired by CLP and correlated with markers of inflammation (e.g., interleukin 6 and inducible nitric oxide synthase) and oxidative stress (e.g., 3-nitrotyrosine) was higher in septic mice, all of which was almost completely normalized by Lira therapy. We demonstrate that the GLP-1 analog Lira ameliorates sepsis-induced endothelial dysfunction by the reduction of vascular inflammation and oxidative stress. Accordingly, the findings suggest that the antioxidant and anti-inflammatory effects of GLP-1 analogs may be a valuable tool to protect the cardiovascular system from dysbalanced inflammation in polymicrobial sepsis.
- Published
- 2021
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