期刊
VASCULAR PHARMACOLOGY
卷 84, 期 -, 页码 67-73出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.vph.2016.07.001
关键词
MnTBAP; Endothelial cell; Inflammation; BMPR-II
资金
- German Heart Foundation [F/33/12]
Aims: The endothelium plays an important role during vascular inflammation. Previous data have demonstrated a high expression level of manganese-superoxide dismutase (MnSOD) in endothelial cells and suggested an important role of MnSOD in several cardiovascular diseases. Manganese (III) tetralds (4-benzoic acid) porphyrin (MnTBAP) has been shown to mimic some of the effects of MnSOD and prevented the development of diabetes and obesity. However, its effect on vascular inflammation and the underlying mechanism is still unknown. Methods and results: Leukocyte adhesion was evaluated in-vivo and in-vitro using dynamic flow chamber and intravital microscopy in mice. Expression of adhesion molecules induced by TNF alpha and adhesion of leukocytes to the vessel wall were inhibited by MnTBAP. The anti-inflammatory effect of MnTBAP was partly mediated by up-regulation of the BMPR-II and Smad dependent pathway. Additionally, MnTBAP decelerated the turn-over of endogenous BMPR-II. Conclusion: Our data demonstrate that MnTBAP activates Smad signaling, preserves the turn-over of BMPR-II and elicits anti-inflammatory effects in endothelial cells, partly mediated by BMPR-II. This finding suggests a potential therapeutic impact of MnTBAP in the treatment of vascular inflammation. (C) 2016 Elsevier Inc. All rights reserved.
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