丹蛭降糖胶囊对糖尿病模型大鼠趋化因子9和白细胞介素-8的影响

目的：观察丹蛭降糖胶囊对糖尿病大鼠趋化因子9（CXCL9）和白细胞介素-8（IL-8）表达的影响,探讨其干预2型糖尿病的作用机制。方法取55只雄性SD大鼠,随机分为正常组、丹蛭高剂量组、丹蛭低剂量组、吡格列酮组、模型组。正常组予基础饲料喂养,其余各组给予高脂饲料喂养,采用链脲佐菌素单次腹腔注射35 mg/kg,建立糖尿病动物模型,120 h后测血糖。造模成功后,丹蛭高、低剂量组分别予丹蛭降糖胶囊1.08、0.54 g/（kg？d）灌胃,吡格列酮组予吡格列酮10 mg/（kg？d）灌胃,正常组和模型组给予生理盐水5 mL/（kg？d）灌胃,连续8周。双抗体夹心法测定大鼠血清中CXCL9和IL-8含量及血糖、血脂。结果与正常组比较,模型组CXCL9和IL-8的表达明显升高（P＜0.05,P＜0.01）；与模型组比较,丹蛭高、低剂量组CXCL9、IL-8的高表达及血糖、血脂明显降低（P＜0.01）。结论丹蛭降糖胶囊具有抑制糖尿病炎症因子高表达,达到降低血糖、调节血脂的作用。

Effects of Danzhi Jiangtang Capsule on CXCL9 and IL-8 in Diabetic Model Rats

Objective To investigate the effects of Danzhi Jiangtang Capsule on CXCL9 and IL-8 in type 2 diabetic model rats, and discuss the mechanism in TCM intervention in type 2 diabetes. Methods Fifty male SD rats were randomly divided into 5 groups：normal control group, high-dosage group of Danzhi Jiangtang Capsule, low-dosage group of Danzhi Jiangtang Capsule, pioglitazone group and model group. Normal control group was fed with basal diet, while the other groups were fed with high fat diet. A single intraperitoneal injection of STZ of 35 mg/kg was employed to establish the animal model of diabetes mellitus. When the diabetic rodent model was built, high-dosage group of Danzhi Jiangtang Capsule and low-dosage group of Danzhi Jiangtang Capsule were treated with 1.08 g/（kg？d） and 0.54 g/（kg？d） by gavage, pioglitazone group was treated with 10 mg/（kg？d） by gavage, the blank group and the model group were treated with physiological saline 5 mL/（kg？d） by gavage for 8 weeks. CXCL9, IL-8 and blood glucose, and lipid in serum of rats were determined with double antibody sandwich method. Results Expressions of CXCL9 and IL-8 in model group increased significantly, compared with the normal control group （P＆lt;0.05, P＆lt;0.01）. Expressions of CXCL9 and IL-8 in high and low dosage Danzhi Jiangtang Capsule group significantly decreased, the blood glucose and lipid also decreased, compared with model group （P＆lt;0.01）. Conclusion Danzhi Jiangtang Capsule has inhibitory effects on the high expression of inflammatory factors in diabetes, and can also lower bloodglucose, and regulate blood lipid.