臨牀消化器内科 Vol.28 No.2(3-4)


特集名 消化管疾患に対する漢方医学からのアプローチ ― 現状と展望
題名 消化管疾患に対する漢方医療の実際 (4) イレウス
発刊年月 2013年 02月
著者 河野 透 札幌東徳洲会病院先端外科センター
【 要旨 】 エビデンス重視の現代医療で漢方は注目を集めてきている.その契機となったのが大建中湯の薬効機序に関する分子レベルの研究で,腸管運動に関与する神経伝達物質以外にも山椒や乾姜の成分が腸管粘膜上皮細胞から内因性ペプチドやセロトニンを動員し,腸管血流や腸管運動を改善,術後の炎症反応を抑制することが明らかとなった.これを契機に米国,日本で複数のプラセボ二重盲検臨床試験が行われ,大建中湯の腸管運動改善効果が証明されつつある.さらに,薬物動態を明らかにするため大建中湯の吸収試験が行われ,山椒や乾姜の有効成分が吸収されることも明らかとなった.大建中湯を術後早期に使用することでイレウス発症を抑制することが期待される.
Theme Treatment of Gastrointestinal Disorders Using Traditional Japanese Herbal Medicine : Present Status and Future Prospects
Title Daikenchuto and Postoperative Ileus
Author Toru Kono Advanced Surgery Center, Sapporo Higashi Tokushukai Hospital
[ Summary ] Kampo is gaining a measure of recognition in the modern medical community through validation by scientific evidence. This acceptance is driven in part by molecular studies elucidating the pharmacologic mechanisms of daikenchuto. These studies have identified neurotransmitters involved in intestinal motility. They have also identified the active constituents of Japanese pepper and dried ginger which mobilize the endogenous calcitonin family of peptides and bring about serotonin release from intestinal epithelial cells, which improves blood flow and motility. They thereby intervene in the postoperative inflammatory cascade. Moreover, the results of these studies have lead to a number of double-blind, placebo-controlled clinical trials in the United States and Japan to determine the effects of daikenchuto on accelerating intestinal motility. In addition, pharmacokinetic studies have revealed that the active constituents of Japanese pepper and dried ginger are absorbed from the gastrointestinal tract and enter the bloodstream. The administration of daikenchuto during early postoperative periods represents a potential advance in the management of postoperative ileus.
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