Differences between the Effects of Sho-saiko-to, Gorei-san and Toki-shakuyaku-san on the Sphincter of Oddi. An intraoperative cholangiomanometric study / 日本東洋医学雑誌

ABSTRACT

Female patients suffering from gallbladder stone disease were administered Sho-saiko-to (Xiao-Chai-Hu-Tang), Gorei-san (Wu-Ling-San) or Toki-shakuyaku-san (Dang-Gui-Shao-Yao-San) preoperatively, and were examined by cholangiomanometry during operation. Perfusion pressure was significantly elevated, when Sho-saiko-to or Gorei-san were administered, meaning that the pressure threshold of the sphincter of Oddi for volume load in the bile duct was lowered. This phenomenon tended to be more obvious in Gorei-san group, and will prevent duodenal fluid from transpapillary reflux. Parameters concerning the declining curve (T_1/2, T_1/4, T_1/5) showed a significantly rapid relaxation of the sphincter of Oddi only in Sho-saiko-to group, which will result in a prevention of stasis of bile. These modulating functions of Sho-saiko-to and Gorei-san for the sphincter of Oddi would be one of the main reasons why these formulas are used for hypochondriac fullness and distress or excessively accumulated intestinal fluid. Toki-shakuyaku-san showed no such effects on the sphincter of Oddi.