Involvement of p38 mitogen activated protein kinase in PLL-AGE-induced cyclooxygenase-2 expression in mouse RAW 264.7 macrophages

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題名:	Involvement of p38 mitogen activated protein kinase in PLL-AGE-induced cyclooxygenase-2 expression in mouse RAW 264.7 macrophages
作者:	林建煌 Lin CH;Wu CH;Thum WY;Ho YS;Lee HM
貢獻者:	醫學科學研究所
日期:	2002
上傳時間:	2009-10-12 15:31:58 (UTC+8)
摘要:	In the present study, murine RAW 264.7 macrophages were incubated with poly-L-lysine-derived advanced glycosylation end products (PLL-AGEs) to examine cyclooxygenase-2 protein expression. Treatment of RAW 264.7 cells with PLL-AGEs caused the dose-dependent expression of cylooxygenase-2 but not cylooxygenase-1 and an increase in cylooxygenase activity. Increased cylooxygenase-2 expression was seen at 6 h and reached a maximum at 24 h. The tyrosine kinase inhibitor, genistein, and the p38 mitogen-activated protein kinase (MAPK) inhibitor, [4-(4-fluorophenyl)-2-(4-methylsulfinylphenyl)-5-(4-pyridyl)1H-imidazole] (SB 203580), inhibited PLL-AGE-induced cylooxygenase-2 expression, while the Ras inhibitor, FPT inhibitor II, and the MAP kinase kinase inhibitor, (2'-amino-3'-methoxyflavone) (PD 98059), had no effect on PLL-AGE-induced cylooxygenase-2 expression. Incubation of RAW 264.7 cells with PLL-AGEs resulted in activation of p38 MAPK, and this activation was suppressed by genistein and SB 203580. Taken together, our results suggest that activation of protein tyrosine kinase and p38 MAPK is involved in AGE-induced cyclooxygenase-2 expression in RAW 264.7 macrophages.
關聯:	Eur. J. Pharmacol.(438):143-152.
資料類型:	article
顯示於類別:	[醫學科學研究所] 期刊論文

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