绞股蓝皂苷对2型糖尿病合并非酒精性脂肪性肝病大鼠肝组织与血浆硫化氢的影响

The effect of gypenosides on hydrogen sulfide in liver tissue and plasma of rat with type 2 diabetes mellitus and nonalcoholic fatty liver disease

目的 观察绞股蓝皂苷对2型糖尿病合并非酒精性脂肪性肝病大鼠肝组织与血浆硫化氢（H2S）浓度的影响.方法 58只SPF级雄性SD大鼠按照体重相匹配的原则分为空白对照组（7只）,2型糖尿病并非酒精性脂肪性肝病模型组（模型组,51只）.建立2型糖尿病并非酒精性脂肪性肝病大鼠模型.2型糖尿病并非酒精性脂肪性肝病模型大鼠分别给予绞股蓝皂苷大剂量组（9只,1 g/kg·d-1）,绞股蓝皂苷小剂量组（9只,0.5g/kg·d-1）,2型糖尿病并非酒精性脂肪性肝病模型组（9只,模型组）以纯净水灌胃.检测肝组织、血浆硫化氢浓度变化,及血糖、甘油三酯、总胆固醇变化.结果 ①血浆硫化氢浓度：与模型组[（2.67±0.41） μmol/L]比较,绞股蓝皂苷大剂量组[（3.83±0.47） μmol/L]、小剂量组[（4.30±0.43） μmol/L]降低（P＜0.01）.②肝组织硫化氢含量：与模型组[（237.8±33.05）pmol/min/mg/protein]比较,绞股蓝皂苷大剂量组[（275.81±36.07） pmol/min/mg/protein]、小剂量组[（333.52±37.94） pmol/min/mg/protein]升高.③血糖：与模型组（18.84±4.24） mmol/L比较,绞股蓝皂苷大剂量组（10.86±3.46） mmol/L、绞股蓝皂苷小剂量组（14.78±3.39） mmol/L降低（P＜0.01）；绞股蓝皂苷大剂量组低于小剂量组（P＜0.01）.④甘油三酯水平：与模型组（3.97±0.64） mmol/L比较,空白对照组（0.96±0.09） mmol/L、绞股蓝皂苷大剂量组（1.83±0.56） mmol/L、绞股蓝皂苷小剂量组（2.82±0.66） mmol/L均降低（P均＜0.01）.结论 绞股蓝皂苷可升高2型糖尿病并非酒精性脂肪性肝病大鼠血浆、肝组织的硫化氢浓度,呈剂量依赖性,改善2型糖尿病并非酒精性脂肪性肝病大鼠血糖、血脂代谢.

Objective To observe the influence ofgypenosides on hydrogen sulfide in liver tissue and plasma of rat with type 2 diabetes mellitus and nonalcoholic fatty liver disease.Methods 58 SPF male SD rats,with body mass 220～250 g,were randomly divided into a blank control group （group N,n=7）,and a NAFLD and T2DM model group （Group M,n=51）.Group N was fed with ordinary diet in the first four weeks,group M was fed with diets of high fat and sugar,injected with 40 mg/kg STZ overnight,and the same diets for the next four weeks.The rat model with T2DM and NAFLD was build.NAFLD and T2DM model group were divided into three groups：a high dose GPS group （JH,n=9） injected with 1 g/kg · d-1 GPS,a low dose GPS group （JL,n=9） injected with 0.5 g/kg · d-1 GPS,and a model group （M,n=9） injected with the same volume of water,and high fat diet at the same time.The treatment period was six weeks,and the experiment period was fourteen weeks.TG,TC,BS,and H2S in the plasma of rat were tested,and H2S in the liver tissue of the rat was tested.Results ①The changes of H2S in plasma：group JH [（4.30±0.43） μmol/L] and JL [（3.83 ±0.47） μmol/L] was lower than group M [（2.67 ± 0.41） μmol/L],there was a significant difference.②The changes of H2S in the liver tissue：group JH [（333.52±37.94） pmol/min/mg/protein] and JL [（275.81 ±36.07）pmol/min/mg/protein] was lower than group M [（237.8± 33.05） pmol/min/mg/protein],there was a significant difference.③BS levels：group JH（10.86±3.46）mmol/L,group JL （14.78±3.39）mmol/L,group M（18.84±4.24） mmol/L,group JH and JL was lower than group M,there was a significant difference （P〈0.01）.④The plasma TG level：group N （0.96±0.09） mmol/L,group JH （2.82± 0.66） mmol/L,group JL （1.83± 0.56） mmol/L,group M （3.97 ± 0.64） mmol/L.group JH and JL was lower than group M,there was a significant difference （P〈0.01）.Conclusion Gypenoside can reduce the blood sugar,triglycerides,and total cholesterol in rat with with type 2 diabetes mellitus and nonalcohol fatty liver disease.H2S concentrations in plasma and liver tissue of the rats with T2DM and NAFLD were increased by GPS,showing dose dependence.Gypenosides can also improve metabolism of blood glucose and lipid in rats with T2DM and NAFLD.