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Salicylideneamino-2-thiophenol inhibits inflammatory mediator genes (RANTES, MCP-1, IL-8 and HIF-1alpha) expression induced by tert-butyl hydroperoxide via MAPK pathways in rat peritoneal macrophages.

Chung J., Lee H.S., Chung H.Y., Yoon T.R., Kim H.K.

Salicylideneamino-2-thiophenol (Sal) regulated the redox status and the expression of chemokines induced by tert-butyl hydroperoxide (t-BHP). Sal (100 microM) increased reduced/oxidized glutathione (GSH/GSSG) ratios and thiol (SH) levels by 210 and 157%, respectively, and decreased reactive oxygen species (ROS) levels by 60% in t-BHP-treated macrophages. The inductions of regulated upon activation, normal T-cell expressed and secreted (RANTES), monocyte chemoattractant protein-1 (MCP-1), interleukin-8 (IL-8) and hypoxia inducible factor-1alpha (HIF-1alpha) by t-BHP (10 microM) were decreased to 250, 80, 80 and 500% by Sal (100 microM), respectively. In the Sal signaling pathway, c-Jun N-terminal kinases (JNK), extracellular signal-regulated kinases (ERK) and p38 signaling protein modulation were decreased by 67, 69 and 119%, respectively, by Sal at 100 microM. Sal (100 microM) also altered cytosol and nuclear NF-kappaB protein expression by 169 and 5%, respectively. Sal also attenuated NF-kappaB nuclear binding activity. Sal thus has a protective effect against t-BHP-induced inflammation and that this, in part, is due to the inhibition of the production of RANTES, MCP-1, IL-8 and HIF-1alpha via the modulation of the NF-kappaB and mitogen-activated protein kinase (MAPK) pathways.

Biotechnol. Lett. 30:1553-1558(2008) [PubMed] [Europe PMC]

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