疏肝利胆中药防止胆固醇结石形成的实验研究

目的:探讨疏肝利胆中药胆石净防治胆石形成的作用机制,以期为临床应用提供理论与实验依据。方法:80只豚鼠随机分为正常对照组、模型组、熊去氧胆酸(ursodeoxycholicacid,UDCA)组、疏肝利胆中药(胆石净)组。以高胆固醇致石食饵诱发法建立豚鼠胆石模型。其中疏肝利胆中药组、UDCA组分别给予胆石净、UDCA治疗7周。观察各组豚鼠一般情况、胆囊成石率、胆囊组织形态学变化。结果:疏肝利胆中药组豚鼠一般情况及行为学特征较模型组有明显改善,其胆囊成石率较模型组和UDCA组低,差异有统计学意义。疏肝利胆中药能明显改善胆囊组织的病理结构,主要表现为胆囊黏膜炎症反应明显减轻或消失,胆囊组织结构基本接近于正常。结论:疏肝利胆中药能有效降低胆石的形成。其作用机制可能与改善胆石症胆囊组织病理结构,减少胆固醇对胆囊平滑肌的进一步侵害,从而增强胆囊收缩功能有关。

Inhibiting effects of recipe for dispersing stagnated liver qi to promote bile flow on cholesterol gallstone formation in guinea pigs

Objective: To explore the mechanism of the inhibiting effects of recipe for dispersing stagnated liver qi to promote bile flow (Danshijing Tablets) on cholesterol gallstone formation and provide experimental evidence for its clinical application. Methods: Eighty guinea pigs were randomly divided into 4 groups, which were normal control group, untreated group, ursodeoxycholic acid (UDCA)-treated group and Danshijing Tablets-treated group. The gallstones in guinea pigs were induced by high-cholesterol diet. UDCA and Danshijing Tablets were given orally to guinea pigs in the corresponding group respectively for seven weeks. Then the physical signs of the guinea pigs, the rates of gallstone formation and the histomorphological changes of the gallbladder were examined. Results: The behavior of guinea pigs in the Danshijing Tablets-treated group was obviously improved and the rate of gallstone formation was significantly decreased as compared with those in both untreated and UDCA-treated groups (P<0.05). The inflammation reaction of mucous membrane in gallbladder was evidently reduced in the Danshijing Tablets-treated group and its morphological appearance turned to be approximately normal. Conclusion: Recipe for dispersing stagnated liver qi to promote bile flow may decrease gallstone formation. Its mechanism may be related to reducing pathologic changes in gallbladder tissues, which will reduce the damages of cholesterol to the smooth muscle in gallbladder and enhance the contractility of gallbladder.