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299123 occurrences (No.77 in the rank) during 5 years in the PubMed. [no cache] 500 found

256) Collectively, our findings highlight the pivotal roles of AP-1 and extracellular signal-regulated kinase in signal transduction of Pb(2+) -induced IL-8 gene activation.

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PMID:24106166 DOI:10.1002/tox.21909

2015 Environmental toxicology

* Pb²⁺ induced IL-8 gene expression by extracellular signal-regulated kinases and the transcription factor, activator protein 1, in human gastric carcinoma cells.

- Divalent lead (Pb(2+) ) is a common industrial pollutant epidemiologically associated with gastric cancers. Pb(2+) was found to promote tumorigenesis, which may include interleukin (IL)-8, a pro-inflammatory chemokine that promotes angiogenesis and tumor metastasis. Given that the gastrointestinal tract is a major route of Pb(2+) exposure, we investigated the ability of Pb(2+) to induce IL-8 expression in gastric carcinoma cells and its underlying mechanism. At a concentration of 0.1 μM, Pb(2+) induced IL-8 gene activation in gastric carcinoma AGS cells. Using a IL-8 promoter-deletion analysis, transcription factor activator protein 1 (AP-1) was identified as a necessary component of Pb(2+) -induced IL-8 gene activation. Upregulation of the IL-8 gene was abrogated by the MEK inhibitor, PD98059, and partially suppressed by the epidermal growth factor receptor inhibitors, AG1478 and PD153035. Furthermore, c-Jun protein expression was induced in cells treated with Pb(2+) , and overexpression of c-Jun enhanced Pb(2+) -induced IL-8 activation. Collectively, our findings highlight the pivotal roles of AP-1 and extracellular signal-regulated kinase in signal transduction of Pb(2+) -induced IL-8 gene activation. These molecules may be potential therapeutic targets for Pb(2+) -related inflammation leading to stomach carcinogenesis. © 2013 Wiley Periodicals, Inc. Environ Toxicol 30: 315-322, 2015.

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(1)88 suggest	(15)10 revealed	(29)3 for	(43)2 during
(2)27 indicate	(16)9 may	(30)3 highlighted	(44)2 give
(3)24 of	(17)8 show	(31)3 imply	(45)2 hold
(4)23 null	(18)7 showed	(32)3 indicated	(46)2 implicate
(5)23 from	(19)7 underscore	(33)3 regarding	(47)2 into
(6)17 are	(20)6 to	(34)3 that	(48)2 is
(7)17 support	(21)5 suggested	(35)3 the	(49)2 lend
(8)14 provide	(22)4 also	(36)3 will	(50)2 or
(9)12 have	(23)4 included	(37)2 add	(51)2 point
(10)12 highlight	(24)4 on	(38)2 at	(52)2 provided
(11)12 in	(25)4 reveal	(39)2 by	(53)2 related
(12)12 were	(26)4 we	(40)2 call	(54)2 should
(13)11 and	(27)3 could	(41)2 confirm	(55)2 suggesting
(14)10 demonstrate	(28)3 demonstrated	(42)2 contribute	(56)2 suggestive

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--- WordNet output for findings --- =>研究(調査)結果 Overview of noun findings The noun findings has 1 sense (no senses from tagged texts) 1. findings -- (a collection of tools and other articles used by an artisan to make jewelry or clothing or shoes) Overview of noun finding The noun finding has 3 senses (first 3 from tagged texts) 1. (16) determination, finding -- (the act of determining the properties of something, usually by research or calculation; "the determination of molecular structures") 2. (3) finding -- (the decision of a court on issues of fact or law) 3. (1) finding -- (something that is found; "the findings in the gastrointestinal tract indicate that he died several hours after dinner"; "an area rich in archaeological findings") --- WordNet end ---