To investigate the effects of different vegetable growing regions and planting modes on soil quality,soils in high,medium and low altitude areas of Guizhou were respectively sampled under different vegetable efficient planting modes,and the variations of soil microbial flora and enzyme activities were analyzed. The soil microbial count and total bacteria of the vegetable efficient cultivation mode were significantly higher than that of the control （traditional planting mode） in each planting area,and the microbial diversity index was also improved to varying de- grees.The soil phosphatase,catalase and urease activities of the vegetable efficient planting mode were higher than that of the control.The soil catalase and urease activities were higher than that of the control by 1.37-1.44 and 1.51-2.80 times. Application of vegetable efficient planting mode in different regions will help to im- prove the soil quality in a given period.
目的:考察参芎葡萄糖注射液对人肝微粒体细胞色素P450(CYP450)酶6种亚型CYP1A2、CYP2E1、CYP2C9、CYP2C19、CYP2D6、CYP3A4的体外抑制作用。方法:在人肝微粒体孵育系统中,将不同浓度的参芎葡萄糖注射液和7种混合探针底物(非那西丁、氯唑沙宗、甲苯磺丁脲、奥美拉唑、右美沙芬、睾酮和咪达唑仑)共同孵育,采用超高效液相色谱-串联质谱法(UPLC-MS/MS)同时测定孵育液中CYP1A2、CYP2E1、CYP2C9、CYP2C19、CYP2D6和CYP3A4酶对应代谢物(对乙酰氨基酚、6-羟基氯唑沙宗、羟基甲苯磺丁脲、5-羟基奥美拉唑、右啡烷、6β-羟基睾酮和α-羟基咪达唑仑)的剩余量,与对照组进行比较,得到酶的剩余活性,用Graph Pad v5.0软件计算半抑制浓度(IC50)值,考察参考葡萄糖注射液对人肝微粒体CYP450酶的抑制程度。结果:在人肝微粒体孵育体系中,参芎葡萄糖注射液对6种CYP450亚型酶的IC50值均>15%。结论:在临床剂量下,参芎葡萄糖注射液对人肝微粒体CYP1A2、CYP2E1、CYP2C9、CYP2C19、CYP2D6和CYP3A4无明显抑制作用。
