PMID- 10601128 OWN - NLM STAT- MEDLINE DCOM- 20000119 LR - 20190722 IS - 1524-4563 (Electronic) IS - 0194-911X (Linking) VI - 34 IP - 6 DP - 1999 Dec TI - Salicylate inhibition of extracellular signal-regulated kinases and inducible nitric oxide synthase. PG - 1259-64 AB - The expression of inducible nitric oxide synthase (iNOS) is a characteristic response to inflammation and can be inhibited with sodium salicylate. We used the cytokine-induced iNOS induction in cardiac fibroblasts as a model system in which to test the hypothesis that effects on mitogen-activated protein kinases (MAPKs) may explain the mechanism by which salicylate exerts its anti-inflammatory effects. Tumor necrosis factor-alpha (TNF-alpha) alone can induce extracellular signal-regulated kinase (ERK), p38 MAPK, and c-Jun N-terminal kinase activity in a rapid and transient manner, whereas interferon-gamma (IFN-gamma) can induce only ERK. The inhibition of either the ERK pathway or p38 MAPK activity with selective inhibitors blocked cytokine-induced iNOS protein and nitrite production. Salicylate treatment inhibited iNOS expression induced by TNF-alpha and IFN-gamma and attenuated the phosphorylation of ERK by TNF-alpha and IFN-gamma either alone or in combination. Salicylate had no obvious effect on the activation of p38 MAPK or c-Jun N-terminal kinase. The results showed that salicylate inhibited the phosphorylation of ERK and iNOS expression induced by cytokines in a dose-dependent manner and suggested that salicylate exerts its anti-inflammatory action in part through inhibition of the ERK pathway and iNOS induction. FAU - Wang, Z AU - Wang Z AD - Whitaker Cardiovascular Institute and Department of Biochemistry, Boston University School of Medicine, Boston, MA 02118, USA. FAU - Brecher, P AU - Brecher P LA - eng GR - HL-53471/HL/NHLBI NIH HHS/United States GR - HL-55001/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Hypertension JT - Hypertension (Dallas, Tex. : 1979) JID - 7906255 RN - 0 (Anti-Inflammatory Agents, Non-Steroidal) RN - 0 (Cytokines) RN - 0 (Enzyme Inhibitors) RN - 0 (RNA, Messenger) RN - 0 (Tumor Necrosis Factor-alpha) RN - 82115-62-6 (Interferon-gamma) RN - EC 1.14.13.39 (Nitric Oxide Synthase) RN - EC 1.14.13.39 (Nitric Oxide Synthase Type II) RN - EC 1.14.13.39 (Nos2 protein, rat) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinases) RN - EC 2.7.11.24 (p38 Mitogen-Activated Protein Kinases) RN - WIQ1H85SYP (Sodium Salicylate) SB - IM MH - Animals MH - Anti-Inflammatory Agents, Non-Steroidal/*pharmacology MH - Blotting, Western MH - Cells, Cultured MH - Cytokines/pharmacology MH - Enzyme Induction/drug effects MH - Enzyme Inhibitors/pharmacology MH - Fibroblasts/cytology/*drug effects/enzymology MH - Interferon-gamma/pharmacology MH - MAP Kinase Signaling System/drug effects MH - Mitogen-Activated Protein Kinases/*antagonists & inhibitors/metabolism MH - Myocardium/cytology MH - Nitric Oxide Synthase/*antagonists & inhibitors/metabolism MH - Nitric Oxide Synthase Type II MH - RNA, Messenger/metabolism MH - Rats MH - Sodium Salicylate/*pharmacology MH - Tumor Necrosis Factor-alpha/pharmacology MH - p38 Mitogen-Activated Protein Kinases EDAT- 1999/12/22 00:00 MHDA- 1999/12/22 00:01 CRDT- 1999/12/22 00:00 PHST- 1999/12/22 00:00 [pubmed] PHST- 1999/12/22 00:01 [medline] PHST- 1999/12/22 00:00 [entrez] AID - 10.1161/01.hyp.34.6.1259 [doi] PST - ppublish SO - Hypertension. 1999 Dec;34(6):1259-64. doi: 10.1161/01.hyp.34.6.1259.