Esterase enzymes involved in pyrethroid and organophosphate resistance in a Brazilian population of Riphicephallus (Boophilus) microplus (Acari, Ixodidae)

被引：58

作者：

Baffi, Milla Alves ^{[1
]}

Lino de Souza, Guilhermle Rocha ^{[1
]}

de Sousa, Cristina Soares ^{[1
]}

Ceron, Carlos Roberto ^{[2
]}

Bonetti, Ana Maria ^{[1
]}

机构：

[1] Univ Fed Uberlandia, Inst Genet & Bioquim, Genet Lab, BR-38405902 Uberlandia, MG, Brazil

[2] Univ Estadual Paulista, UNESP, Dept Quim & Ciencias Ambientais, BR-15054000 Sao Jose Do Rio Preto, SP, Brazil

来源：

MOLECULAR AND BIOCHEMICAL PARASITOLOGY | 2008年 / 160卷 / 01期

关键词：

acaricide resistance; acetylcholinesterases; carboxylesterases; cattle tick;

D O I：

10.1016/j.molbiopara.2008.03.009

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 [生物化学与分子生物学]; 081704 [应用化学];

摘要：

Esterases are a group of enzymes that are reportedly associated with acaricide resistance in Riphicephallus (Boophilus) microplus. A comparative analysis was made of the esterase patterns in malathion and deltamethrin-sensitive, tolerant and resistant tick groups, using non-denaturing polyacrylamide gel electrophoresis. Electrophoretical profiles revealed four bands of esterase activity against alpha-naphthyl acetate; which were dubbed EST-1 to EST-4. The EST-3 and EST-4 were detected in all strains and were classified as carboxylesterases (CaEs). The EST-2, classified as an acetylcholinesterase (AChE), was detected in all groups, but its staining intensity increased from susceptible to resistant groups, indicating an altered production according to the degree of resistance. EST-1, which was also classified as an AChE, was detected exclusively in tolerant and resistant groups to both acaricides, but displayed greater activity in the malathion-resistant group. These data suggest that these AChEs may represent an important detoxification strategy developed to overcome the effects of acaricides. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：70 / 73

页数：4

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