黄秋葵水提物对2型糖尿病大鼠血尿酸及肾功能的影响
Effects of okra extract on serum uric acid and renal function in type 2 diabetes mellitus rats
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摘要: 目的:探讨黄秋葵水提物对2型糖尿病大鼠血尿酸水平及肾脏功能的影响。方法:将72只SD雄鼠随机分为正常对照组(8只)和2型糖尿病造模组(64只),除正常对照组为普通饲料,其余均以高糖高脂饲料喂养。4周后,造模组大鼠腹腔注射链脲佐菌素(STZ)建立2型糖尿病动物模型。成模大鼠随机分为5组:糖尿病模型组、阳性对照组(0.64 g/kg·d-1降糖宁灌胃)、黄秋葵低、中、高剂量组(分别按每公斤体重给予0.78、1.56、2.60 g黄秋葵水提物添加到高糖高脂饲料中),4周后,采集大鼠尿样,处死大鼠,称量肾脏重量以计算肾脏系数,同时测血尿酸、血肌酐和血尿素氮。结果:与糖尿病模型组比较,黄秋葵水提物高剂量组血尿酸水平降低(p<0.05),低、中、高剂量组大鼠的血肌酐和血尿素氮均有不同程度的下降,但差异无统计学意义(p>0.05)。结论:适宜剂量的黄秋葵水提物可降低2型糖尿病大鼠血尿酸水平,其对肾脏的保护作用有待进一步研究。Abstract: Objective: To investigate the effects of okra extract on serum uric acid and renal function in type 2 diabetes mellitus ( T2DM) rats.Methods: 72 male Sprague-Dawley ( SD) rats were randomly divided into normal control group ( 8 rats) and T2 DM model group ( 64 rats) , fed with lab chow diet and high-sugar and high-fat diet respectively for four weeks. Then the rats in T2 DM model group were injected with streptozocin ( STZ) intraperitoneally to establish T2 DM animal model. The successful model rats were further assigned into T2 DM model, positive control ( Jiang-tangning gavage, 0.64 g/kg·d-1) , low, medium and high dose of okra extract groups ( okra extract at the dosages of 0.78, 1.56 g and 2.60 g per kilograms of body weight was added into the high-sugar and high-fat diet taken by the rats) . Administered four weeks, the urine samples were collected and the kidneys of the rats were dissected for evaluating the kidney index. Serum uric acid ( SUA) , serum creatinine ( SCr) and blood urea nitrogen ( BUN) were measured. Results: Compared with diabetic model group, the level of SUA in high dosage of okra extract group was significantly decreased ( p < 0.05) , but the significant difference was not found in serum SCr and BUN between okra extract intervention groups ( p > 0.05) . Conclusion: Okra extract may mitigate the level of SUA at a appropriate dosage in T2 DM rats, the protective effect on renal function needs to be explored in the further researches.