臨牀消化器内科 Vol.24 No.13(2-1)


特集名 薬物性腸粘膜障害
題名 総論(臨床)(1) 薬剤による小腸粘膜障害
発刊年月 2009年 12月
著者 藤森 俊二 日本医科大学消化器内科
著者 高橋 陽子 日本医科大学消化器内科
著者 瀬尾 継彦 日本医科大学消化器内科
著者 山田 祐希江 日本医科大学消化器内科
著者 辰口 篤志 日本医科大学消化器内科
著者 坂本 長逸 日本医科大学消化器内科
【 要旨 】 カプセル内視鏡で,通常型非ステロイド性抗炎症薬(NSAID)を常用する患者の60%以上に小腸粘膜傷害が生じていることがわかった.さらに,通常型NSAID を2 週間服用しただけで潰瘍を含む小腸粘膜傷害が60%近い服用者に生じることが明らかとなった.低用量アスピリン腸溶錠でも50%を超える服用者で小腸粘膜傷害が確認され,対策が求められている.COX-2 選択的阻害薬は短期的に小腸粘膜傷害を抑制するが,長期的な効果は不明確で,NSAID 起因性小腸粘膜傷害を予防・治療する薬剤が望まれている.近年,本邦で,ミソプロストールやレバミピドなどがアスピリンを含むNSAID 起因性小腸粘膜傷害を抑制しうる可能性を認めた結果が報告されている.今後,ほかの薬剤を含めて規模の大きな検討が望まれる.
Theme Intestinal Mucosal Damage Induced by Drugs
Title Drug Induced Enteropathy
Author Shunji Fujimori Department of Internal Medicine, Division of Gastroenterology, Nippon Medical School
Author Yoko Takahashi Department of Internal Medicine, Division of Gastroenterology, Nippon Medical School
Author Tsuguhiko Seo Department of Internal Medicine, Division of Gastroenterology, Nippon Medical School
Author Yukie Yamada Department of Internal Medicine, Division of Gastroenterology, Nippon Medical School
Author Atsushi Tatsuguchi Department of Internal Medicine, Division of Gastroenterology, Nippon Medical School
Author Choitsu Sakamoto Department of Internal Medicine, Division of Gastroenterology, Nippon Medical School
[ Summary ] Capsule endoscopy and double balloon endoscopy, advanced modalities that now allow for full investigation of the entire small intestine, have revealed that NSAIDs can cause a variety of abnormalities in the small intestine;such as ulcerations, perforation, bleeding and diaphragm-like stricture. Capsule endoscopy studies have shown that as little as a two week administration of conventional NSAIDs induce small intestinal damage in up to 60% of healthy volunteers. Moreover, enteric coated low-dose aspirin also induces small intestinal damage in up to 50% of healthy volunteers. In relation to the prevention of NSAID-induced small intestinal injury, several studies have already shown that celecoxib, a selective COX-2 inhibitor, effectively reduces mucosal breaks induced by 2 week treatment with NSAIDs. Recently, in Japan, misoprostol and rebamipide have been investigated for the prevention of NSAID-induced small intestinal injury. Confirmation of conditions with capsule endoscopy along with administration of misoprostol and rebamipide may prevent NSAID-induced macroscopic damage throughout the small intestine.
戻る