红景天破壁饮片对小鼠肠道菌群影响的初步研究

初步研究并对比红景天破壁饮片﹑常规饮片和传统粉末对正常小鼠肠道菌群的影响。分别给药灌胃小鼠14 d后取小鼠粪便进行传统细菌培养和PCR-DGGE(聚合酶链反应-变性梯度凝胶电泳)分析。细菌培养结果表明1/8剂量破壁饮片组的肠球菌和大肠杆菌的数量比常规饮片组和传统粉末组少,而乳酸杆菌和双歧杆菌显著增加(P<0.05)。PCR-DGGE结果表明,1/8剂量破壁饮片组肠道菌群的多样性系数(H)和物种丰度(S)高于其他各组,物种丰度(S)与正常组对比具有极显著意义(P<0.01),与常规饮片组和传统粉末组相比具有显著性意义(P<0.05),组内相似度也较高。长期服用1/8剂量破壁饮片会有一定的调节肠道的作用,且很可能是通过促进乳酸杆菌和双歧杆菌等益生菌的生长来进行调节,所形成的肠道菌群群落也会更稳定。

Preliminary study on effect of Rhodiolae Crenulatae Radix et Rhizoma cell wall-broken decoction pieces on intestinal flora of mice

This study aims to analyze and compare the effect of cell wall-broken decoction pieces, conventional decoction pieces and conventional powder of Rhodiolae Crenulatae Radix et Rhizoma on the intestinal flora of normal mice. The conventional bacterial culture and PCR-DGGE(polymerase chain reaction-denaturing gradient gel electrophoresis)were adopted for the mice after the oral administration for 14 days. According to the bacterial culture results, the 1/8 dose cell wall-broken decoction pieces group showed fewer Enterococcus and Escherichia coli bacillus but more Lactobacillus and Bifidobacterium than the conventional decoction pieces group and the traditional powder group(P<0.05). Meanwhile, on the basis of the PCR-DGGE results, the 1/8 dose cell wall-broken decoction pieces group revealed the highest Shannon-Wiener index(H)and species richness(S)among the seven groups, with extremely significant differences compared with the normal group(P<0.01), significant differences compared with the conventional decoction pieces group and the conventional powder group(P<0.05)and a high intra-group similarity. In conclusion, the long-term intake of 1/8 dose Rhodiolae Crenulatae Radix et Rhizoma cell wall-broken decoction pieces showed a certain effect in regulating intestinal tract by promoting the growth of Lactobacillus and Bifidobacterium. Furthermore, the intestinal flora community will become more stable.