›› 1999, Vol. 42 ›› Issue (1): 19-24.

• 研究论文 • 上一篇    下一篇

拟除虫菊酯对家蝇Na-K-ATPase抑制作用的研究

何运转, 李梅, 冯国蕾, 王荫长   

  • 出版日期:1999-02-20 发布日期:1999-02-20

Inhibition of pyrethroid insecticideson nerve Na-K-ATPase in house flies (Musca domestica)

He Yun-zhuan,Li Mei-Feng, Guo lei, Wang Yin-chang   

  • Online:1999-02-20 Published:1999-02-20

摘要: 通过对家蝇神经系统Na-K-ATPase性质的研究,表明Na-K-ATPase反应的适宜pH值为7.0~8.0,适温为35~40℃,Km为0.22 mmol/L,Vmax为555.56 nmol/(mg·min)。比较测定了家蝇敏感品系、Del-R、2Cl-R抗性品系的Na-K-ATPase活性及溴氰菊酯和氯菊酯对该酶的抑制作用。实验证明,敏感与抗性品系间Na-K-ATPase活力无显著的差异,但溴氰菊酯和氯菊酯对不同家蝇品系Na-K-ATPase的抑制作用有明显区别,两种拟除虫菊酯可抑制敏感家蝇品系Na-K-ATPase的活性,而对抗性品系无明显的抑制作用。

关键词: Na-K-ATPase, 家蝇, 拟除虫菊酯

Abstract: The properties of Na-K-ATPase in the nerve system of house flies were described For-Na-K ATPase the optimum pH and temperature were 7.0~8.0and 35~40℃ respectively, the Km value was 0.22 mmol/L ATP and Vmax was approximately 555.56 nmol Pi/(mg·protein·min). The Na-K-ATPase activities in susceptible (SP) and Del-R、2Cl-R house fly strains were determined. The results indicated that there was no significant difference in Na-K-ATPase activities among the three strains. Inhibition of deltamethrin and permethrin on Na-K-ATPase activity was also studied. The results showed that the two pyrethroids inhibited obviously the Na-K-ATPase activity in the susceptible strain, but no effect in the resistant strain

Key words: Na-K-ATPase, house fly, pyrethroid