INTESTINE Vol.16 No.1(3)


特集名 薬剤による腸管障害
題名 NSAIDsによる小腸病変(アスピリンを除く)
発刊年月 2012年 01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 江原 彰仁 日本医科大学消化器内科
著者 小林 剛 日本医科大学消化器内科
著者 三井 啓吾 日本医科大学消化器内科
著者 米澤 真興 日本医科大学消化器内科
著者 田中 周 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 】 非ステロイド性抗炎消薬(NSAIDs)は,小腸に多彩な病変を高頻度に起こすことが明らかになった.通常型NSAIDsを2週間服用すると50%を超える服用者に小腸粘膜欠損が現れる.NSAIDs小腸粘膜傷害の診断を,内視鏡所見で行うことは困難だが,小腸口側でみられる絨毛欠損は特徴的な所見である可能性が高い.診断は,NSAIDsの中止で治癒を確認することが基本である.NSAIDs起因性小腸粘膜傷害に対する予防薬・治療薬の候補を探すため複数の試験が行われた.今後は見込みのある薬に対して,大規模な臨床試験が望まれる.
Theme Drug-induced gastrointestinal disorders
Title NSAID-induced small intestinal lesions
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 Akihito Ehara Department of Internal Medicine, Division of Gastroenterology, Nippon Medical School
Author Tsuyoshi Kobayashi Department of Internal Medicine, Division of Gastroenterology, Nippon Medical School
Author Keigo Mitsui Department of Internal Medicine, Division of Gastroenterology, Nippon Medical School
Author Masaoki Yonezawa Department of Internal Medicine, Division of Gastroenterology, Nippon Medical School
Author Shu Tanaka 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 balloon endoscopy are advanced modalities which allow for full investigation of the entire small intestine. They have revealed that nonsteroidal anti-inflammatory drugs (NSAIDs) can cause a variety of abnormalities in the small intestine. Confirmation of small intestinal injury healing after discontinuation of NSAID treatment is necessary to make a diagnosis of NSAIDs-induced small intestinal injury because endoscopic diagnosis of NSAID-induced small intestinal injury is difficult. Recently, several studies have shown that NSAIDs can induce small intestinal injuries with a high degree of prevalence in patients who take these drugs. These reports have shown that the preventive effects of proton pump inhibitors (PPIs) do not extend to the small intestine, suggesting that concomitant therapy may be required to prevent small intestinal side effects associated with NSAID use. Recently, several randomized controlled trials have implemented capsule endoscopy to evaluate the preventive effects of mucoprotective drugs to prevent NSAID-induced small intestinal injury. However, those studies were limited to a small number of subjects and tested short-term NSAID treatment. Therefore, further extensive studies are clearly required to ascertain the beneficial effects of these drugs.
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