Leukocyte RhoA exchange factor Arhgef1 mediates vascular inflammation and atherosclerosis
Journal of Clinical Investigation, ISSN: 1558-8238, Vol: 127, Issue: 12, Page: 4516-4526
2017
- 14Citations
- 24Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Metrics Details
- Citations14
- Citation Indexes14
- 14
- CrossRef11
- Captures24
- Readers24
- 24
Article Description
Abnormal activity of the renin-angiotensin-aldosterone system plays a causal role in the development of hypertension, atherosclerosis, and associated cardiovascular events such as myocardial infarction, stroke, and heart failure. As both a vasoconstrictor and a proinflammatory mediator, angiotensin II (Ang II) is considered a potential link between hypertension and atherosclerosis. However, a role for Ang II–induced inflammation in atherosclerosis has not been clearly established, and the molecular mechanisms and intracellular signaling pathways involved are not known. Here, we demonstrated that the RhoA GEF Arhgef1 is essential for Ang II–induced inflammation. Specifically, we showed that deletion of Arhgef1 in a murine model prevents Ang II–induced integrin activation in leukocytes, thereby preventing Ang II–induced recruitment of leukocytes to the endothelium. Mice lacking both LDL receptor (LDLR) and Arhgef1 were protected from high-fat diet–induced atherosclerosis. Moreover, reconstitution of Ldlr mice with Arhgef1-deficient BM prevented high-fat diet–induced atherosclerosis, while reconstitution of Ldlr Arhgef1 with WT BM exacerbated atherosclerotic lesion formation, supporting Arhgef1 activation in leukocytes as causal in the development of atherosclerosis. Thus, our data highlight the importance of Arhgef1 in cardiovascular disease and suggest targeting Arhgef1 as a potential therapeutic strategy against atherosclerosis.
Bibliographic Details
American Society for Clinical Investigation
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