Objective To observe the effect of Xiaotan Hezhong Recipe on pancreatic fibrosis forming and the expression of related proteins in model rats of chronic pancreatitis. Methods Twenty-four Wistar rats were randomly divided into normal group, model group, pancreatin group and Chinese medicine group (n=6). Rats model were made by DDC solution intraperitoneal injection. Pancreatin group and Chinese medicine group were treated by intragastric administration with pancreatin and Xiaotan Hezhong Recipe, respectively. Body weight of rats was measured regularly. The rats were killed after 4 weeks, with pancreatic pathological detection and laminin, matrix metalloproteinase-1 detection. Results After intraperitoneal injection of DDC solution, pancreatic tissue fibrosis in different degree and inflammatory cell infiltration were found. Chinese medicine group was better than the model group in general conditions, body weight change, pancreatic pathological score and expression of laminin, matrix metalloproteinase-1, the differences were statistically significant (P<0.05). Conclusion Xiaotan Hezhong Recipe can improve chronic pancreatitis rats generally and inhibit pancreatic fibrosis, its mechanism may be related with decreasing laminin expression and increasing the expression of matrix metalloproteinase-1.%目的观察消痰和中方对慢性胰腺炎模型大鼠胰腺纤维化形成及相关蛋白表达的影响，探讨其作用机制。方法24只Wistar大鼠随机分为正常组、模型组、胰酶组和中药组，每组6只。采用DDC溶液腹腔注射方法造模，其中胰酶组、中药组大鼠分别予胰酶、消痰和中方灌胃，定期测量大鼠体质量。4周后处死大鼠，取胰腺行病理检测及层黏连蛋白、基质金属蛋白酶-1的检测。结果经 DDC 溶液腹腔注射的大鼠，胰腺组织中均可见不同程度的纤维化及炎症细胞浸润。中药组大鼠在一般情况、体质量变化、胰腺病理切片评分及层黏连蛋白、基质金属蛋白酶-1表达方面均优于模型组，差异有统计学意义(P＜0.05)。结论消痰和中方能有效改善慢性胰腺炎大鼠一般情况，抑制胰腺纤维化形成。其作用机制可能与降低胰腺层黏连蛋白、增强基质金属蛋白酶-1的表达有关。
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