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Erschienen in: Inflammation Research 12/2010

01.12.2010 | Original Research Paper

The effect of the expression of angiotensin II on extracellular matrix metalloproteinase inducer (EMMPRIN) in macrophages is mediated via the AT1/COX-2/PGE2 pathway

verfasst von: Li-xia Yang, Jin-shan Ye, Rui-wei Guo, Hong Liu, Xian-mei Wang, Feng Qi, Chuanming Guo

Erschienen in: Inflammation Research | Ausgabe 12/2010

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Abstract

Aim

To explore the expression of extracellular matrix metalloproteinase inducer (EMMPRIN) in THP-1 macrophages induced by angiotensin II (Ang II) and the mechanism of EMMPRIN expression.

Methods

THP-1 cells were cultured and induced into macrophages, then stimulated with 10−6 mol/L Ang II. Levels of EMMPRIN gene and its protein were measured by real-time polymerase chain reaction and western blotting. Prostaglandin E2 (PGE2) expression was assayed by enzyme-linked immunosorbent assay. Antagonists of the angiotensin type-1 receptor (AT1R) and angiotensin type-2 receptor (AT2R) were used to inhibit the effect of Ang II, and PGE2 added to detail the mechanism of Ang II-induced EMMPRIN expression.

Results

Ang II clearly induced the expression of EMMPRIN mRNA and protein in macrophages; this expression peaked at 12 h and declined after 24 h. The tendency of enhancement of the levels of cyclooxygenase-2 (COX-2) and PGE2 was coincident with EMMPRIN expression. AT1-receptor antagonists and COX-2 inhibitors inhibited the effect of Ang II, but AT2-receptor antagonists did not.

Conclusion

Ang II can up-regulate EMMPRIN expression in THP-1 macrophages via the AT1/COX-2/PGE2 signal transduction pathway, and the effect can be inhibited by losartan and NS-398.
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Metadaten
Titel
The effect of the expression of angiotensin II on extracellular matrix metalloproteinase inducer (EMMPRIN) in macrophages is mediated via the AT1/COX-2/PGE2 pathway
verfasst von
Li-xia Yang
Jin-shan Ye
Rui-wei Guo
Hong Liu
Xian-mei Wang
Feng Qi
Chuanming Guo
Publikationsdatum
01.12.2010
Verlag
SP Birkhäuser Verlag Basel
Erschienen in
Inflammation Research / Ausgabe 12/2010
Print ISSN: 1023-3830
Elektronische ISSN: 1420-908X
DOI
https://doi.org/10.1007/s00011-010-0223-3

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