Results 161 to 170 of about 3,800 (201)

Antagonism of a neonicotinoid insecticide imidacloprid at neuromuscular receptors

Environmental Toxicology and Pharmacology, 2005
We investigated interactions of the neonicotinoid insecticide imidacloprid with the nicotinic acetylcholine-regulated receptors (nAcChR) of embryonic frog muscle cells. The response of the muscle cells to acetylcholine, nicotine and imidacloprid was monitored as cell contractions.
Josef, Seifert, Jes, Stollberg
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Trifluoroacetyl Neonicotinoid Insecticides with Enhanced Hydrophobicity and Effectiveness

Journal of Agricultural and Food Chemistry, 2010
Neonicotinoids with nitro- or cyanoimino substituents are extensively utilized as plant-mobile (systemic) insecticides controlling the piercing-sucking insect pests. This investigation considers structural features of neonicotinoids with trifluoroacetyl pharmacophores, which may confer enhanced hydrophobicity and effectiveness.
Ikuya, Ohno, Motohiro, Tomizawa, Asako, Aoshima, Satoru, Kumazawa, Shinzo, Kagabu   +4 more
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Neonicotinoid Insecticides

2010
The use ofneonicotinoid insecticides has grown considerably since their introduction in 1990s. They are used extensively for the control of agriculturally important crop pests and also in the control of cat and dog fleas. Imidacloprid exploited through an elaborated structural and substituent optimization of nithiazine was launched to market in 1990 ...
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Sorption and degradation of neonicotinoid insecticides in tropical soils

Journal of Environmental Science and Health, Part B, 2018
Neonicotinoids are the most widely applied class of insecticides in cocoa farming in Ghana. Despite the intensive application of these insecticides, knowledge of their fate in the Ghanaian and sub-Saharan African environment remains low. This study examined the behavior of neonicotinoids in soils from cocoa plantations in Ghana by estimating their ...
Dankyi, Enock, Gordon, Chris, Carboo, Derick, Apalangya, Vitus A., Fomsgaard, Inge S.; id_orcid 0000-0003-4987-8511   +4 more
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Neonicotinoids—from zero to hero in insecticide chemistry

Pest Management Science, 2008
AbstractIn recent years, neonicotinoids have been the fastest‐growing class of insecticides in modern crop protection, with widespread use against a broad spectrum of sucking and certain chewing pests. As potent agonists, they act selectively on insect nicotinic acetylcholine receptors, their molecular target site.
Peter, Jeschke, Ralf, Nauen
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Analgesic and Toxic Effects of Neonicotinoid Insecticides in Mice

Toxicology and Applied Pharmacology, 2001
Several nicotinic agonists with the 6-chloro-3-pyridinyl moiety are potent insecticides (e.g., the neonicotinoids imidacloprid and thiacloprid) while others are candidate nonopioid and nonantiinflammatory analgesics (i.e., epibatidine and several heterocyclic analogs).
M, Tomizawa, A, Cowan, J E, Casida
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Dihydropiperazine Neonicotinoid Compounds. Synthesis and Insecticidal Activity

Journal of Agricultural and Food Chemistry, 2003
Syntheses of various isomeric dihydropiperazines can be approached successfully by taking advantage of the regioselective monothionation of their respective diones. Preparation of the precursor unsymmetrical N-substituted piperazinediones from readily available diamines is key to this selectivity. The dihydropiperazine ring system, as exemplified in 1-[
Jack G, Samaritoni, David A, Demeter, James M, Gifford, Gerald B, Watson, Margaret S, Kempe, Timothy J, Bruce   +5 more
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Photodegradation of neonicotinoid insecticides in water by semiconductor oxides

Environmental Science and Pollution Research, 2015
The photocatalytic degradation of three neonicotinoid insecticides (NIs), thiamethoxam (TH), imidacloprid (IM) and acetamiprid (AC), in pure water has been studied using zinc oxide (ZnO) and titanium dioxide (TiO2) as photocatalysts under natural sunlight and artificial light irradiation.
José, Fenoll, Isabel, Garrido, Pilar, Hellín, Pilar, Flores, Simón, Navarro   +4 more
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Potential human exposures to neonicotinoid insecticides: A review

Environmental Pollution, 2018
Due to their systemic character and high efficacy to insect controls, neonicotinoid insecticides (neonics) have been widely used in global agriculture since its introduction in early 1990. Recent studies have indicated that neonics may be ubiquitous, have longer biological half-lives in the environment once applied, and therefore implicitly suggested ...
Q, Zhang, Z, Li, C H, Chang, J L, Lou, M R, Zhao, C, Lu   +5 more
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Evaluation of neurotoxicity of neonicotinoid insecticides using lipidomics

Environmental Toxicology and Chemistry
Abstract Neonicotinoid (NN) pesticides are widely used globally, but recent studies suggest that even nontoxic doses can induce anxiety-like behaviors and alter brain monoamine neurotransmitter levels in mice. Current neurotoxicity assays may fail to detect subtle toxic effects, such as higher brain function abnormalities caused by ...
Tomoya Koike, Anri Hirai, Kei Nomiyama, Akihumi Eguchi, Nobuhiko Hoshi, Tetsushi Hirano, Collins Nimako, Yared Beyene Yohannes, Mai Tamba, Shouta M M Nakayama, Mayumi Ishizuka, Yoshinori Ikenaka   +11 more
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