Abstract | BACKGROUND: METHODS AND RESULTS: We show that IS enhanced reactive oxygen species (ROS) production, assessed by dihydroethidium staining, by HUVEC. IS also induced the expression of MCP-1, which was measured by enzyme-linked immunosorbent assay and real-time reverse transcription-polymerase chain reaction. These changes were suppressed by apocynin, a specific inhibitor of NADPH oxidase. Furthermore, IS induced the expression of NADPH oxidase 4 (Nox4) mRNA. IS-induced stimulation of ERK1/2 and p38 phosphorylation, detected by immunoblotting, was inhibited by apocynin. Finally, IS activated NF-κB, which was suppressed by inhibiting ERK1/2 and p38, resulting in reduced MCP-1 expression. These results suggest that IS increases NADPH oxidase-derived ROS, which in turn, activates the MAPK/NF-κB pathway and leads to induction of MCP-1 expression in HUVEC. CONCLUSIONS: These findings raise the possibility that IS plays an important pathophysiological role in the development of CVD in individuals with CKD.
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Authors | Natsumi Masai, Junko Tatebe, Gen Yoshino, Toshisuke Morita |
Journal | Circulation journal : official journal of the Japanese Circulation Society
(Circ J)
Vol. 74
Issue 10
Pg. 2216-24
(Oct 2010)
ISSN: 1347-4820 [Electronic] Japan |
PMID | 20818133
(Publication Type: Journal Article)
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Chemical References |
- Chemokine CCL2
- NF-kappa B
- NADPH Oxidases
- Indican
|
Topics |
- Atherosclerosis
(etiology)
- Cells, Cultured
- Chemokine CCL2
(biosynthesis, drug effects)
- Endothelial Cells
(metabolism)
- Humans
- Indican
(pharmacology)
- NADPH Oxidases
(metabolism)
- NF-kappa B
(metabolism)
- Oxidative Stress
(drug effects)
- Renal Insufficiency, Chronic
(complications)
- Signal Transduction
(drug effects)
- Umbilical Veins
(cytology)
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