GPR68 and Lung Endothelial Dysfunction from Inflammation and Acidic Conditions
Author Information
Author(s): Karki Pratap, Ke Yunbo, Zhang Chenou, Promnares Kamoltip, Li Yue, Williams Charles H., Hong Charles C., Birukov Konstantin G., Birukova Anna A.
Primary Institution: University of Maryland School of Medicine
Hypothesis
GPR68 mediates the effects of extracellular acidification on lung endothelial cell permeability and inflammation.
Conclusion
GPR68 is a critical mediator of endothelial dysfunction caused by acidic pH and bacterial inflammation.
Supporting Evidence
- Acidic pH increased endothelial permeability and inflammatory markers.
- GPR68 expression was selectively upregulated by acidic conditions.
- OGM-8345, a GPR68 inhibitor, reduced acidosis-induced endothelial dysfunction.
- Acidosis exacerbated the inflammatory response to bacterial lipopolysaccharide (LPS).
- Endothelial inflammation was linked to increased secretion of pro-inflammatory cytokines.
Takeaway
When the environment around lung cells becomes too acidic, it can make them leaky and inflamed, but a special blocker can help protect them.
Methodology
The study involved primary cultures of human lung endothelial cells exposed to different pH levels and inflammatory stimuli, with measurements of permeability and inflammatory markers.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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