WEKO3
アイテム
Clostridium difficile toxin 起因性下痢症における細胞内情報伝達機構と消化吸収障害の検討 : Cholera toxin 起因性下痢症と対比して
http://hdl.handle.net/10191/42516
http://hdl.handle.net/10191/42516d9e4e450-81ab-41e3-aa96-0cda009e166c
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
109(7)_340-352.pdf (1.9 MB)
|
|
| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2016-07-08 | |||||
| タイトル | ||||||
| タイトル | Clostridium difficile toxin 起因性下痢症における細胞内情報伝達機構と消化吸収障害の検討 : Cholera toxin 起因性下痢症と対比して | |||||
| タイトル | ||||||
| タイトル | Clostridium difficile toxin 起因性下痢症における細胞内情報伝達機構と消化吸収障害の検討 : Cholera toxin 起因性下痢症と対比して | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | clostridium difficile toxin | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | digestion and absorption disturbance | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | intracellular signal transduction | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | brush border membrane enzyme | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | inositolphosnholipid turnover | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | クロストリディウム ディフィシルトキシン | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | 消化吸収障害 | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | 細胞内情報伝達機構 | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | 刷子縁膜酵素 | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | イノシトールリン脂質代謝回転 | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | departmental bulletin paper | |||||
| その他のタイトル | ||||||
| その他のタイトル | Study of Intracellular Signal Transduction and of Digestion and Absorption Disturbance in Clostridium Difficile Toxin-Induced Diarrhea : Comparison with Those in Cholera Toxin-Induced Dirrhea | |||||
| 著者 |
中澤, 俊郎
× 中澤, 俊郎 |
|||||
| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 115702 | |||||
| 姓名 | Nakazawa, Toshiro | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The mechanism of diarrhea induced by Clostridium difficile (CD) toxin is not fully understood although that by Cholera toxin is sufficiently done. Present experiment aims to clarify its mechanism. Male Wistar rats weighing about 200 g were used, and CD toxin were injected into the lumen of ligated jejunal loops. First, time course study of histological examination and measurement of fluid accumulation in the ligated loops were carried out from 2 to 10 hours after CD toxin exposure. Second, we studied the changes of the activities of microvillus membrane enzymes and intestinal absorption rates of oligopeptides. Third, we studied the changes of activities of two intracellular mediators, protein kinase C (PKC) which is activated by diacylglycerol, and inositol 1-4-5-trisphosphate (IP_3) which releases Ca^<++> from endoplasmic reticulum. Diacyiglycerol and IP_3 are produced by receptor mediated-inositolphospholipid turnover. Luminal fluid accumulation steadily increased from 2 to 10 hours after CD toxin exposure. Slight damage in villus tips was observed 2 hours after exposure, and the change became more severe with time. Leucine aminopeptidase (LAP) activity was significantly decreased at 2 hours. The absorption rates of peptides were markedly decreased in toxin treated rats as compared with control rats using the jejunal perfusion method. Activity of PKC was significantly increased at 30 minutes, and that of IP_3 was also increased 1 hour after CD toxin exposure. In addition, PKC antagonist, staurosporin, inhibited the toxin induced-fluid accumulation. Calmodulin antagonists, trifluoperazine and chlorpromazine, also inhibited it. These results indicate that CD toxin increased inositolphospholipid turnover with subsequent activation of PKC and IP_3 in epithelial cell. Then inositolphospholipid turnover and Ca^<++> mobilization possibly play a synergistic role in inhibition of LAP and peptide carrier protein synthesis. Consequently inhibition of LAP synthesis and disturbance of peptide absorption may partly contribute to the CD toxin induced diarrhea. | |||||
| 書誌情報 |
新潟医学会雑誌 en : 新潟医学会雑誌 巻 109, 号 7, p. 340-352, 発行日 1995-07 |
|||||
| 出版者 | ||||||
| 出版者 | 新潟医学会 | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 00290440 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AN00182415 | |||||
| 著者版フラグ | ||||||
| 値 | publisher | |||||
