Lin CH, Kuan IH, Wanf CH, Lee HM, Lee WC, Sheu JR, Hsiao G, Wu CH, Kuo HP |
------>authors3_c=None ------>paper_class1=1 ------>Impact_Factor=None ------>paper_class3=1 ------>paper_class2=1 ------>vol=450 ------>confirm_bywho=soulchin ------>insert_bywho=chwu ------>Jurnal_Rank=None ------>authors4_c=None ------>comm_author= ------>patent_EDate=None ------>authors5_c=None ------>publish_day=None ------>paper_class2Letter=None ------>page2=9 ------>medlineContent= ------>unit=E0110 ------>insert_date=20020821 ------>iam=7 ------>update_date= ------>author=??? ------>change_event=4 ------>ISSN=None ------>authors_c=None ------>score=365 ------>journal_name=Eur J Pharmacolgy ------>paper_name=Lipoteichoic Acid-Induced Cyclooxygenase-2 Expression Requires Activation of p44/42 and p38 MAPK Signal Pathways ------>confirm_date=20050625 ------>tch_id=071004 ------>pmid=12176102 ------>page1=1 ------>fullAbstract=This study investigated the role of p44/42 and p38 mitogen-activated protein kinase (MAPK) in cyclooxygenase-2 expression caused by lipoteichoic acid in human pulmonary epithelial cell line (A549). Lipoteichoic acid-induced increases in cyclooxygenase activity and cyclooxygenase-2 expression were attenuated by tyrosine kinase inhibitors (genistein and tyrphostin AG126), a MAPK/extracellular signal-regulated protein kinase (MEK) inhibitor [2~-amino-3~-methoxyflavone] (PD 98059) and a p38 MAPK inhibitor [4-(4-fluorophenyl)-2-(4-methylsulfinylphenyl)-5-(4-pyridyl)1H-imidazole] (SB 203580). Lipoteichoic acid-induced p44/42 MAPK activation was inhibited by protein kinase C (PKC) inhibitors [12-(2-cyanoethyl)6,7,12,13-tetrahydro-13-methyl-5-oxo-5H-indolo(2,3-a)pyr rolo(3,4-c)-carbazole] (Go 6976) and [3-[1-[3-(amidinothio)propyl-1H-indol-3-yl]-3-(1-methyl-1H-indol-3-yl)male imide]] (Ro 31-8220), genistein and PD 98059. Lipoteichoic acid-induced increase in p38 MAPK activity was inhibited by Go 6976, Ro 31-8220, genistein and SB 203580. Lipoteichoic acid-mediated formation of nuclear factor-kappa B (NF-kappa B)-specific DNA-protein complex was inhibited by genistein, tyrphostin AG126, PD 98059 and SB 203580. These results suggest that the activations of both p44/42 and p38 MAPK by lipoteichoic acid result in stimulation of NF-kappa B-specific DNA-protein binding and subsequent cyclooxygenase-2 expression in A549 cells. Both events required activation of upstream tyrosine kinase and PKC. ------>tmu_sno=None ------>sno=5786 ------>authors2= ------>authors3= ------>authors4= ------>authors5= ------>authors6= ------>authors6_c=None ------>authors=Lin CH, Kuan IH, Wanf CH, Lee HM, Lee WC, Sheu JR, Hsiao G, Wu CH, Kuo HP ------>delete_flag=0 ------>SCI_JNo=None ------>authors2_c=None ------>publish_area=None ------>updateTitle=Lipoteichoic acid-induced cyclooxygenase-2 expression requires activations of p44/42 and p38 mitogen-activated protein kinase signal pathways. ------>language=2 ------>check_flag= ------>submit_date= ------>country=None ------>no= ------>patent_SDate=None ------>update_bywho= ------>publish_year=2002 ------>submit_flag= ------>publish_month=None |