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温度对鲤CYP2E1同工酶活性的影响

Effect of Temperature on Carp CYP2E1-like Isoform Activity
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摘要 为了探究温度对鲤CYP2E1同工酶活性的影响,本试验以氯唑沙宗(CZX)为探针药物探究不同水温(5、10、15、20、25、30℃)对鲤CYP2E1同工酶活性的影响。结果表明,CYP2E1同工酶的K_m值(以CZX作为探针)在反应温度为25℃时相对较低,其V_(max)(以CZX作为探针)在该温度时相对较高;反应温度对CYP450酶活性的影响能够间接反映水温对鱼类体内药物代谢的影响;可以推断鱼类在不同水温条件下药物动力学参数的差异主要是由于其CYP450酶在不同温度下的活性差异所造成的。 To study the effect of temperature on carp CYP2EI, the influence of reaction temperature (5, 10, 15, 20, 25, 30 ℃ ) on the CYP2El-like isoform activity was determined with Chorzoxazane (CZX) as substrate; The results revealed that the Michaelis constant (Km) value of CYP2EI-like isoform( with CZX as probe) was minimal and the maximum reaction velocity ( Vmax ) was maximal at 25℃ compared with those at other temperatures. The influence of reaction temperature on CYP450 activity eould reflect the influence of water temperature on drug metabolism in fish indirectly; So the variations of fish pharmaeokinetic parameters at different water temperatures could be due to the variation of CYP450 activity at different temperatures.
作者 李在建 操继跃 LI Zai-jian CAO Ji-yue(College of Agriculture, Liaocheng University, Shandong Liaocheng 252000, China College of Veterinary Medicine, Huazhong Agri- cultural University, Hubei Wuhan 430070, China)
出处 《西南农业学报》 CSCD 北大核心 2017年第3期707-710,共4页 Southwest China Journal of Agricultural Sciences
基金 山东省自然科学基金(2016ZRB019RS) 聊城大学博士启动基金(318051314)
关键词 温度 CYP450 CYP2E1同工酶 Temperature CYP450 Carp CYP2E1-like isoform
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