Effect of azadirachtin on acetylcholinesterase (AChE) activity and histology of the brown planthopper Nilaparvata lugens (Stål)

Senthil-Nathan, Sengottayan; Choi, Man Young; Seo, Hong Yul; Paik, Chae-Hoon; Kalaivani, Kandaswamy; Kim, Jae-Duk

doi:10.1016/j.ecoenv.2007.07.005

Cited by 130 publications

(48 citation statements)

References 35 publications

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“…showed a decrease activity of AChE followed by the lowest in Ischnura sp., especially in autumn. The increase in AChE activity may be due to heavy metals enhancement to accumulation of acetylcholine at the synapses, so that the post-synaptic membrane is in a state of permanent stimulation (Senthil Nathan et al, 2008;Begum et al, 2011). This agreed with Gill et al (1991), who reported increased AChE activity in skeletal muscles and brain of a fish species exposed to Cd for 48 hours.…”

Section: The Activity Of Detoxification Enzymementioning

confidence: 99%

Valuation of water pollution using enzymatic biomarkers in aquatic insects as bioindicators from El-Mansouriya stream, Dakahlia, Egypt

Bream¹,

Amer²,

Haggag³

et al. 2017

Int. J. Adv. Res. Biol. Sci

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This investigation was aimed to evaluate water pollution with heavy metals using three biomarkers, as well as the study of the aquatic insects-seasons interaction. Three species of aquatic insects collected from El-Mansouriya stream (Dakahlia, Egypt), during the different seasons from spring 2014 to winter 2015. Water samples, sediments and whole body of the three aquatic insects were analyzed for heavy metal contents. As well as, two enzyme biomarkers, Acetylcholinesterase (AChE) and glutathione-S-transferase (GST) were used to monitor aquatic insects' response to water pollutants. Results showed various activities of the three biomarkers at the different studied seasons. Where, the concentration of selected heavy metals, in the whole body of the three insects, showed a relatively wide range for each metal analyzed. Also, higher values of metal pollution index (MPI) were attained in hotter seasons (spring and summer) and its decrements were observable during cooler seasons (autumn, winter), that provides a representative picture to the environmental state of environmental impacts on the aquatic ecosystem. While the heavy metals were found to be highly accumulated in selected aquatic insects body, as well as the variation of enzymes activity, thus both enzymes could be used as biomarker of water and sediment contamination.

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Section: The Activity Of Detoxification Enzymementioning

confidence: 99%

Valuation of water pollution using enzymatic biomarkers in aquatic insects as bioindicators from El-Mansouriya stream, Dakahlia, Egypt

Bream¹,

Amer²,

Haggag³

et al. 2017

Int. J. Adv. Res. Biol. Sci

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“…10, 1702-1711, http://dx.doi.org/10.1080/02772248.2014 Azadirachtin is the predominant insecticidal active ingredient found in the seed, leaves, and other parts of the neem tree Azadirachta indica (Morgan 2009). Azadirachtin is now used for control of pests and other harmful animals (Mondal, Barat, and Mukhopadhyay 2007;Winkaler et al 2007;Senthil Nathan et al 2008;Shanmugasundaram et al 2008). The effect of some neem-based botanical pesticides (Neemgold, Achook) was also studied on the biochemical parameters of zebrafish Danio rerio Ahmad et al 2012).…”

Section: Influence Of a Botanical Pesticide Azadirachtin On Ultimobmentioning

confidence: 97%

“…It has been reported that botanical pesticides have less undesirable side effects than synthetic pesticides and help to preserve the natural environment. Several plants have been now used for the control of insect pests (Umar, Kela, and Ogidi 2007;Senthil Nathan et al 2008;Sileshi et al 2009;de Boer et al 2010) and as molluscicides (Singh, Yadav, and Singh 2010).…”

Section: Influence Of a Botanical Pesticide Azadirachtin On Ultimobmentioning

confidence: 99%

Influence of a botanical pesticide, azadirachtin, on ultimobranchial gland of the freshwater catfishHeteropneustes fossilis

Kumar

Prasad

Suzuki

et al. 2013

Toxicological & Environmental Chemistry

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Freshwater catfish, Heteropneustes fossilis, were subjected to 42 mg L À1 of azadirachtin for short-term exposure (96 h) and to 10.5 mg L À1 for long-term exposure (28 days). Six fishes were sacrificed on each time interval from control and experimental groups after 24, 48, 72, and 96 h in the short-term exposure and after 7, 14, 21, and 28 days in the long-term experiment. The calcium regulating endocrine gland, viz. the ultimobranchial gland, was fixed for histological studies. Up to 72 h of azadirachtin treatment, there was no histological alteration in the UBG (ultimobranchial gland) of H. fossilis. After 96 h exposure, the ultimobranchial cells stain feebly and the nuclear volume of these cells were slightly decreased. No histological alterations have been observed in the UBG cells up to 14 days following azadirachtin exposure. After 21 days, the cytoplasm of ultimobranchial cells was feebly stained and the nuclear volume exhibits a decrease. The nuclear volume of these cells was further decreased and the gland shows vacuolization and degeneration at certain places after 28 days azadirachtin treatment. Hence, it can be concluded that azadirachtin severely affects the physiology of calcium homeostasis in H. fossilis. Therefore, the botanical pesticides should be used carefully near aquatic reservoirs.

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“…The larvicidal efficacy of evaluated plant extracts is dependent on the effect of one of these secondary metabolites present in them or the combined effort of one or more of the secondary metabolites. The environment is known to potentially influence the morphology and expression of compounds in plant (Senthilnathan et al, 2008). Environmental factors may be responsible to the variation in the secondary metabolites present in the chosen plant samples.…”

Section: Introductionmentioning

confidence: 99%

Larvicidal Efficacy of Cola gigantea, Malacantha alnifolia and Croton zambesicus Extracts as Phytoinsecticides Against Malaria Vector Anopheles stephensi (Diptera: culicidae)

Jose¹,

Adesina²

2015

jmr

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Malaria is transmitted by Anopheles stephensi and in controlling the malaria parasite Plasmodium spp., the vector mosquito has to be controlled. Extensive use of synthetic insecticides has resulted in environmental hazards and also in development of physiological resistance among vector mosquito species. Plant products are considered to be a potential alternative approach as they are environmentally safe, target specific and biodegradable. The n-hexane extracts of three plants viz., leaves of Cola gigantea, Malacantha alnifolia and Croton zambesicus were evaluated against mosquito third instar larvae under ambient laboratory condition at Environmental Biology Laboratory, Department of Science Laboratory Technology, Rufus Giwa Polytechnic, Owo, Ondo State, Nigeria. The larvicidal effects of the three plant species were tested at the following dosages: 0ml; 2ml; 4ml and 5ml. Larval mortality toxicity was calculated after 24 hours exposure period and the results obtained show that all the extracts exerted varying significant (P<0.05) percentages of larvae mortality effect; extract of C. gigantea was found to have the highest mortality rate at LC 50 and LC 90 . From the phytochemical screening conducted on the plants, it was observed that the plants contain some secondary metabolites which are likely responsible for the larvicidal properties exhibited by the tested plants. The plants extracts show to be promising alternative to synthetic insecticides in malaria vector control programme and its adoption is advocated. Further studies need to be conducted to isolate and characterize the active molecules present in the plants.

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Effect of azadirachtin on acetylcholinesterase (AChE) activity and histology of the brown planthopper Nilaparvata lugens (Stål)

Cited by 130 publications

References 35 publications

Valuation of water pollution using enzymatic biomarkers in aquatic insects as bioindicators from El-Mansouriya stream, Dakahlia, Egypt

Valuation of water pollution using enzymatic biomarkers in aquatic insects as bioindicators from El-Mansouriya stream, Dakahlia, Egypt

Influence of a botanical pesticide, azadirachtin, on ultimobranchial gland of the freshwater catfishHeteropneustes fossilis

Larvicidal Efficacy of <i>Cola gigantea</i>, <i>Malacantha alnifolia</i> and <i>Croton zambesicus</i> Extracts as Phytoinsecticides Against Malaria Vector <i>Anopheles stephensi</i> (Diptera: culicidae)

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