scholarly journals The Role of Glutathione Transferases in the Development of Insecticide Resistance

10.5772/61972 ◽  
2016 ◽  
Author(s):  
Zazali Alias
Keyword(s):  
Insecticide Resistance ◽  
Glutathione Transferases

scholarly journals Role of Glutathione Transferases in the Mechanism of Brostallicin Activation

Biochemistry ◽  
2010 ◽  
Vol 49 (1) ◽  
pp. 226-235 ◽  
Author(s):  
Silvia Pezzola ◽  
Giovanni Antonini ◽  
Cristina Geroni ◽  
Italo Beria ◽  
Maristella Colombo ◽  
...  
Keyword(s):  
Glutathione Transferases

Porcine glutathione transferase Alpha 2-2 is a human GST A3-3 analogue that catalyses steroid double-bond isomerization

2010 ◽  
Vol 431 (1) ◽  
pp. 159-167 ◽  
Author(s):  
Natalia Fedulova ◽  
Françoise Raffalli-Mathieu ◽  
Bengt Mannervik
Keyword(s):  
Double Bond ◽  
Glutathione Transferase ◽  
Biological Species ◽  
Glutathione Transferases ◽  
Special Role ◽  
Primary Role ◽  
The Novel ◽  
Protective Function ◽  
Isomerase Activity

A primary role of GSTs (glutathione transferases) is detoxication of electrophilic compounds. In addition to this protective function, hGST (human GST) A3-3, a member of the Alpha class of soluble GSTs, has prominent steroid double-bond isomerase activity. The isomerase reaction is an obligatory step in the biosynthesis of steroid hormones, indicating a special role of hGST A3-3 in steroidogenic tissues. An analogous GST with high steroid isomerase activity has so far not been found in any other biological species. In the present study, we characterized a Sus scrofa (pig) enzyme, pGST A2-2, displaying high steroid isomerase activity. High levels of pGST A2-2 expression were found in ovary, testis and liver. In its functional properties, other than steroid isomerization, pGST A2-2 was most similar to hGST A3-3. The properties of the novel porcine enzyme lend support to the notion that particular GSTs play an important role in steroidogenesis.

scholarly journals Effects of piperonyl butoxide on the toxicity of the organophosphate temephos and the role of esterases in the insecticide resistance of Aedes aegypti

2014 ◽  
Vol 47 (5) ◽  
pp. 579-582 ◽  
Author(s):  
Boscolli Barbosa Pereira ◽  
Jean Ezequiel Limongi ◽  
Edimar Olegário de Campos Júnior ◽  
Denis Prudencio Luiz ◽  
Warwick Estevam Kerr
Keyword(s):  
Aedes Aegypti ◽  
Insecticide Resistance ◽  
Piperonyl Butoxide

Correction to Role of Glutathione Transferases in the Mechanism of Brostallicin Activation

Biochemistry ◽  
2010 ◽  
Vol 49 (23) ◽  
pp. 4930-4930
Author(s):  
Silvia Pezzola ◽  
Giovanni Antonini ◽  
Cristina Geroni ◽  
Italo Beria ◽  
Maristella Colombo ◽  
...  
Keyword(s):  
Glutathione Transferases

scholarly journals Species diversity and insecticide resistance within the Anopheles hyrcanus group in Ubon Ratchathani Province, Thailand

2020 ◽  
Vol 13 (1) ◽  
Author(s):  
Anchana Sumarnrote ◽  
Hans J. Overgaard ◽  
Vincent Corbel ◽  
Kanutcharee Thanispong ◽  
Theeraphap Chareonviriyaphap ◽  
...  
Keyword(s):  
Insecticide Resistance ◽  
Control Strategies ◽  
Resistance Mechanism ◽  
Abundant Species ◽  
Malaria Vectors ◽  
Pcr Assay ◽  
Insecticide Susceptibility ◽  
Human Landing ◽  
Early Peak

Abstract Background Members of the Anopheles hyrcanus group have been incriminated as important malaria vectors. This study aims to identify the species and explore the insecticide susceptibility profile within the Anopheles hyrcanus group in Ubon Ratchathani Province, northeastern Thailand where increasing numbers of malaria cases were reported in 2014. Methods Between 2013 and 2015, five rounds of mosquito collections were conducted using human landing and cattle bait techniques during both the rainy and dry seasons. Anopheles mosquitoes were morphologically identified and their insecticide susceptibility status was investigated. Synergist bioassays were carried out with An. hyrcanus (s.l.) due to their resistance to all insecticides. An ITS2-PCR assay was conducted to identify to species the Hyrcanus group specimens. Results Out of 10,361 Anopheles females collected, representing 18 taxa in 2 subgenera, 71.8% were morphologically identified as belonging to the Hyrcanus Group (subgenus Anopheles), followed by An. barbirostris group (7.9%), An. nivipes (6.5%), An. philippinensis (5.9%) and the other 14 Anopheles species. Specimens of the Hyrcanus Group were more prevalent during the rainy season and were found to be highly zoophilic. Anopheles hyrcanus (s.l.) was active throughout the night, with an early peak of activity between 18:00 h and 21:00 h. ITS2-PCR assay conducted on 603 DNA samples from specimens within the Hyrcanus Group showed the presence of five sisters species. Anopheles peditaeniatus was the most abundant species (90.5%, n = 546), followed by An. nitidus (4.5%, n = 27), An. nigerrimus (4.3%, n = 26), An. argyropus (0.5%, n = 3), and An. sinensis (0.2%, n = 1). All An. hyrcanus (s.l.) specimens that were found resistant to insecticides (deltamethrin 0.05%, permethrin 0.75% and DDT 4% and synergist tests) belonged to An. peditaeniatus. The degree of resistance in An. peditaeniatus to each of these three insecticides was approximately 50%. Addition of PBO (Piperonyl butoxide), but not DEF (S.S.S-tributyl phosphotritioate), seemed to restore susceptibility, indicating a potential role of oxidases as a detoxifying enzyme resistance mechanism. Conclusions A better understanding of mosquito diversity related to host preference, biting activity and insecticide resistance status will facilitate the implementation of locally adapted vector control strategies.

scholarly journals Possible molecular genetic mechanisms of resistance in populations of the Colorado potato beetle

2020 ◽  
Vol 18 ◽  
pp. 00004
Author(s):  
Galina Benkovskaya
Keyword(s):  
Insecticide Resistance ◽  
Colorado Potato Beetle ◽  
Molecular Genetic ◽  
Membrane Channels ◽  
Mechanisms Of Resistance ◽  
Local Populations ◽  
Genetic Base ◽  
Potato Beetle ◽  
Genetic Mechanisms

Expansion of the Colorado potato beetle (CPB) in the Eurasia is continuing. At the same time, there is an increase in the level of insecticide resistance in populations of CPB in Russia. Regular detection of individuals resistant to diagnostic doses of insecticides during the last 10 years shows an increase of their prevalence in local populations in Bashkortostan. Genetic base of insecticide resistance in the Colorado potato beetle populations contains both mutations in the genes of target receptors or membrane channels, as well as changes in expression of these and many other genes. Role of the diapause proteins capable to bind xenobiotics and withdraw them from metabolism is discussed.

scholarly journals Susceptibility Level of the Colorado Potato Beetle (Leptinotarsa Decemlineata Say) to Chlorpyrifos and Acetamiprid in Poland and Resistance Mechanisms of the Pest to Chlorpyrifos

2011 ◽  
Vol 51 (3) ◽  
pp. 279-284 ◽  
Author(s):  
Paweł Węgorek ◽  
Joanna Zamojska ◽  
Marek Mrówczyński
Keyword(s):  
Colorado Potato Beetle ◽  
Oxidative Metabolism ◽  
Leptinotarsa Decemlineata ◽  
Essential Role ◽  
Resistance Mechanisms ◽  
Glutathione Transferases ◽  
Main Role ◽  
Potato Beetle ◽  
Leptinotarsa Decemlineata Say

Susceptibility Level of the Colorado Potato Beetle (Leptinotarsa DecemlineataSay) to Chlorpyrifos and Acetamiprid in Poland and Resistance Mechanisms of the Pest to ChlorpyrifosNowadays, neonicotinoids play an essential role in the control of the Colorado potato beetle (CPB) in Poland. Taking into consideration that CPB shows some resistance to pyrethroids and the main role of oxidative metabolism in this resistance, research was conducted to estimate CPB susceptibility level to chlorpyrifos and acetamiprid. The results pointed to a lack of CPB resistance to acetamiprid and a weak susceptibility level to chlorpyrifos by the CPB. For this reason, the second part of the experiment was aimed at detecting the resistance mechanisms of the CPB to chlorpyrifos. Results showed that none of the tested enzyme groups (oxidases, esterases and glutathione transferases) are the reason for CPB resistance to chlorpyrifos. The experiments revealed an increase in the beetles survival after adding oxidative enzyme blocker to chlorpyrifos.

scholarly journals Role of the G-Protein-Coupled Receptor Signaling Pathway in Insecticide Resistance

2019 ◽  
Vol 20 (17) ◽  
pp. 4300 ◽  
Author(s):  
Ting Li ◽  
Nannan Liu
Keyword(s):  
Insecticide Resistance ◽  
Cell Line ◽  
Signaling Pathway ◽  
G Protein ◽  
Cell Lines ◽  
Sf9 Cells ◽  
Camp Production ◽  
G Protein Coupled Receptor ◽  
G Protein Coupled

The G-protein-coupled receptor (GPCR) regulated intracellular signaling pathway is known to be involved in the development of insecticide resistance in the mosquito, Culex quinquefasciatus. To elucidate the specific role of each effector in the GPCR regulating pathway, we initially expressed a GPCR, G-protein alpha subunit (Gαs), adenylate cyclase (AC), and protein kinase A (PKA) in insect Spodoptera frugiperda (Sf9) cells and investigated their regulation function on cyclic AMP (cAMP) production and PKA activity. GPCR, Gαs, and AC individually expressed Sf9 cells showed higher cAMP production as the expression of each effector increased. All the effector-expressed cell lines showed increased PKA activity however. Moreover, Sf9 cytochrome P450 gene expression and cell tolerance to permethrin were examined. The relative expression of CYP9A32gene in Sf9 cells tested was significantly increased in all effector-expressed cell lines compared to a control cell line; these effector-expressed cell lines also showed significantly higher tolerance to permethrin. Inhibitor treatments on each effector-expressed cell line revealed that Bupivacaine HCl and H89 2HCl robustly inhibited cAMP production and PKA activity, respectively, resulting in decreased tolerance to permethrin in all cell lines. The synergistic functions of Bupivacaine HCl and H89 2HCl with permethrin were further examined in Culex mosquito larvae, providing a valuable new information for mosquito control strategies.

Insect glutathione transferases and insecticide resistance

2005 ◽  
Vol 14 (1) ◽  
pp. 3-8 ◽  
Author(s):  
A. A. Enayati ◽  
H. Ranson ◽  
J. Hemingway
Keyword(s):  
Insecticide Resistance ◽  
Glutathione Transferases
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