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投稿时间:2025-09-26
投稿时间:2025-09-26
中文摘要: 该研究采用链脲佐菌素(streptozotocin,STZ)注射建立Ⅰ型糖尿病模型,将72只小鼠分为正常组、模型组、阿卡波糖组、配方低剂量组(625 mg/kg)、中剂量组(1 250mg/kg)、高剂量组(2500mg/kg),禁食4h后灌胃给予相应样品和淀粉溶液进行糖耐试验;同时通过高脂饲料喂养联合STZ注射建立Ⅱ型糖尿病模型,另取72只小鼠分为正常组、模型组、二甲双胍组、配方低剂量组(100mg/kg)、中剂量组(200 mg/kg)、高剂量组(400mg/kg),灌胃4周后测定相关表型。结果显示:Ⅰ型糖尿病模型实验中,配方中剂量组和高剂量组小鼠餐后血糖显著降低。与Ⅱ型糖尿病模型小鼠相比,配方各剂量组小鼠的摄食量降低,肝脏质量显著下降,超氧化物歧化酶和己糖激酶活性升高,配方高剂量组小鼠胰岛素水平回调。病理观察显示,配方各剂量组小鼠肝脏脂肪沉积、附睾脂肪细胞增大及胰岛萎缩等情况均有所改善。综上,桑叶青钱柳冲调粉能显著降低小鼠餐后血糖并改善胰岛素抵抗。
Abstract:This study established a streptozotocin (STZ)-induced type 1 diabetes mouse model. Seventy-two mice were divided into six groups:normal group,model group,acarbose group,low-dose formula group(625 mg/kg),medium-dose formula group (1 250mg/kg) and high-dose formula group (2500mg/kg). After 4h of fasting,corresponding samples and starch solution were intragastrically administrated to conduct oral glucose tolerance tests. Meanwhile,a type 2 diabetes model was built by high-fat diet feeding combined with STZ injection. Another72mice were assigned to normal group,model group,metformin group,low-dose (100mg/kg),medium-dose (200mg/kg) and high-dose (400mg/kg) formula groups. Relevant phenotypic indicators were detected after 4 weeks of continuous gavage administration.The results showed that the medium and high doses of the formula significantly reduced postprandial blood glucose in type 1 diabetic mice. Compared with the untreated type 2 diabetic model mice,food intake decreased in all formula dose groups. Liver weight decreased significantly in all treatment groups,while the activities of superoxide dismutase and hexokinase increased,and serum insulin levels recovered in the high-dose group. Pathological observations demonstrated that liver lipid deposition,enlarged epididymal adipocytes and pancreatic islet atrophy were alleviated in all formula intervention groups. In conclusion,the instant powder mixed with mulberry leaf and Cyclocarya paliurus significantly lowered postprandial blood glucose and ameliorated insulin resistance in diabetic mice.
keywords: streptozotocin diabetes model glucose tolerance test postprandial blood glucose insulin resistance
文章编号:202618008 中图分类号: 文献标志码:
基金项目:福建省科技计划项目(2023N0035)
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