中国媒介生物学及控制杂志 ›› 2009, Vol. 20 ›› Issue (6): 522-524.

• 论著 • 上一篇    下一篇

德国小蠊谷胱甘肽S-转移酶和乙酰胆碱酯酶活力与抗药性的关系

陈东亚,褚宏亮,杨维芳,孙俊   

  1. 江苏省疾病预防控制中心消杀科(南京 210009)
  • 收稿日期:2009-05-30 出版日期:2009-12-20 发布日期:2009-12-20
  • 作者简介:陈东亚(1983-),女,江苏常州人,硕士,技师,主要从事病媒生物防制研究。
  • 基金资助:

    江苏省预防医学基金(Y200721)

Relationship between the activities of Glutathione S-transferase and Acetylcholinesterase of Blattella germanica and its resistance

 CHEN Dong-Ya, CHU Hong-Liang, YANG Wei-Fang, SUN Jun   

  1. Jiangsu Center for Disease Control and Prevention, Nanjing 210009, Jiangsu Province, China
  • Received:2009-05-30 Online:2009-12-20 Published:2009-12-20

摘要:

 【摘要】 目的 了解德国小蠊的谷胱甘肽S-转移酶(GSTs)和乙酰胆碱酯酶(AChE)与抗药性的关系,为探讨德国小蠊抗性机制及建立抗性生化检测方法提供理论依据。方法 采用药膜法测定德国小蠊对4种常用杀虫剂的抗性水平,采用分光光度法测定酶活性。结果 德国小蠊对DDVP、残杀威、溴氰菊酯和高效氯氰菊酯抗性系数分别为1.08、2.35、7.47和10.92。对德国小蠊抗性和敏感品系GSTs、AChE活力比较结果表明,抗性品系GSTs活力相对于敏感品系明显升高,差异有统计学意义(P<0.01),抗性品系AChE活力相对于敏感品系明显下降,差异亦有统计学意义(P<0.01)。结论 德国小蠊抗性品系除对DDVP和残杀威有较弱抗性外, 对高效氯氰菊酯产生了高度抗性, 对溴氰菊酯产生了一定程度的抗性;对GSTs、AChE活力研究结果表明GSTs 的活性增高,使杀虫剂代谢加速,导致杀虫剂对德国小蠊的敏感性下降;AChE作为有机磷和氨基甲酸酯类杀虫药物的靶标酶,其活力下降导致德国小蠊敏感性下降。表明杀虫剂的代谢酶和靶标酶活力的改变,与德国小蠊对有机磷、氨基甲酸酯和菊酯类杀虫剂产生的抗性密切相关。

关键词: 德国小蠊, 抗药性, 谷胱甘肽S-转移酶, 乙酰胆碱酯酶

Abstract:

  【Abstract】 Objective To   understand   the   relationship   between   the   activities   of   glutathione   S-transferase   and acetylcholinesterase of Blattella germanica and its resistance, and then provide scientific evidence for the establishment of resistance detection by biochemistry. Methods The insecticide film was used to identify the resistance of German cockroach to four kinds of insecticides. The enzyme activity was tested by spectrophotometry. Results The resistance ratio of B. germanica to four insecticides was 1.08, 2.35, 7.47, 10.92, respectively. GSTs activity of resistant strain was much higher than that of susceptibility strain, and the difference was very significant. AChE activity of resistant strain was lower than that of susceptibility strain, and the difference was significant. Conclusion B. germanica had high resistance to beta?cypermethrin and deltamethrin, and low resistance to DDVP and propoxur. The increase of GSTs activity could speed up the metabolism of pesticides, leading to the decrease of B. germanica susceptibility. AChE as an orgnaophosphorus and carbamate insecticides target enzyme,  the decrease of the activity led to the decline of B. germanica susceptibility. The results indicated that the changes of enzyme activity had the close relationship with the development of resistance.

Key words: Blattella germanica, Resistance, Glutathione S-transferase, Acetylcholinesterase

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