著作: Kawahara Tsukasa/Kuwano Yuki/[近藤 茂忠]/Sugiyama Toshiro/[河合 智子]/[二川 健]/[岸 恭一]/[六反 一仁]/Helicobacter pylori lipopolysaccharide from type 1, but not type 2 strains, stimulates apoptosis of cultured gastric mucosal cells/[The Journal of Medical Investigation : JMI]
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種別 | 必須 | 学術論文(審査論文) | |||
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言語 | 必須 | 英語 | |||
招待 | 推奨 | ||||
審査 | 推奨 | ||||
カテゴリ | 推奨 | ||||
共著種別 | 推奨 | ||||
学究種別 | 推奨 | ||||
組織 | 推奨 | ||||
著者 | 必須 | ||||
題名 | 必須 |
(英) Helicobacter pylori lipopolysaccharide from type 1, but not type 2 strains, stimulates apoptosis of cultured gastric mucosal cells |
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副題 | 任意 | ||||
要約 | 任意 |
(英) The cag pathogenicity island (cag PAI) genes are a major determinant of virulence of Helicobacter pylori (Hp). Lipopolysaccharide (LPS) purified from the cag PAI-positive (type I) strains induced apoptosis of primary cultures of guinea pig gastric mucosal cells. Lipid A catalyzed this apoptosis. These cells expressed the Toll-like receptor 4 (TLR4) mRNA and its protein, and type I Hp LPS phosphorylated transforming growth factor beta-activated kinase 1 (TAK1) and TAK1-binding protein 1 (TAB1) in association with up-regulation of the TLR4 expressions, suggesting that type I Hp LPS evoked distinct TLR4 signaling. In contrast, Hp LPS from type II strains with complete or partial deletion of the cag PAI genes did not phosphorylate TAK1 and TAB1 and failed to induce apoptosis. Accelerated apoptosis of gastric epithelial cells is one of the important events relevant to chronic, atrophic gastritis caused by Hp infection. The difference in proapoptotic action of LPS between the type I and II strains may support an important role of the cag PAI genes in the pathogenesis of gastric lesions caused by Hp infection. |
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キーワード | 推奨 |
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発行所 | 推奨 | 徳島大学.医学部 | |||
誌名 | 必須 |
The Journal of Medical Investigation : JMI([徳島大学.医学部])
(pISSN: 1343-1420, eISSN: 1349-6867)
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巻 | 必須 | 48 | |||
号 | 必須 | 3,4 | |||
頁 | 必須 | 167 174 | |||
都市 | 任意 | ||||
年月日 | 必須 | 2001年 8月 初日 | |||
URL | 任意 | ||||
DOI | 任意 | ||||
PMID | 任意 | 11694956 (→Scopusで検索) | |||
CRID | 任意 | ||||
WOS | 任意 | ||||
Scopus | 任意 | ||||
機関リポジトリ | 83815 | ||||
評価値 | 任意 | ||||
被引用数 | 任意 | ||||
指導教員 | 推奨 | ||||
備考 | 任意 |
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