XENOTECH特约代理商|H0610.I 肠微粒体和S9

肠微粒体在药物代谢中的应用

分布于上皮细胞，中绒毛尖端活性最强，然后朝着腺窝方向逐渐降低，十二指肠和空肠的代谢活性高于回肠和结肠。肠微粒体是肠黏膜在匀浆和差速离心过程中获得的由破碎的内质网自我融合形成的亚细胞结构，包含I相代谢酶和II相代谢酶，故肠微粒体在体外药物的代谢研究中得到了广泛应用。 胃肠壁是口服药物首过代谢的重要部位，通常与CYP450酶和UGT酶有关。然而，肠道中酯酶活性的贡献在药物代谢中也可能非常显著。因此，如需研究CYP450酶和UGT酶的代谢，则需排除酯酶代谢对试验结果的影响。IPHASE/汇智和源采用

Improvement of the Ames Test Using Human Liver S9 Preparation

The use of the human S9 fraction in mutagenicity testing systems may be valuable for evaluating the mutagenicity of chemicals in humans. When using a crude human liver S9 fraction, which is obtained following the centrifugation of the tissue

In Vitro Drug Metabolite Profiling Using Hepatic S9 and Human Liver Microsomes

preliminary information on the in vivo metabolism of a compound of interest by the liver. Experimental in vitro hepatic systems using hepatocytes, 9000g supernatant (S9), and microsomal fractions are presently used to characterize the in vitro metabolism