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Cited by 1,741

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NEONICOTINOID INSECTICIDE TOXICOLOGY: Mechanisms of Selective Action

Tomizawa, Motohiro, Casida, John E.·2005·Annual Review of Pharmacology and Toxicology

Abstract

▪ Abstract The neonicotinoids, the newest major class of insecticides, have outstanding potency and systemic action for crop protection against piercing-sucking pests, and they are highly effective for flea control on cats and dogs. Their common names are acetamiprid, clothianidin, dinotefuran, imidacloprid, nitenpyram, thiacloprid, and thiamethoxam. They generally have low toxicity to mammals (acute and chronic), birds, and fish. Biotransformations involve some activation reactions but largely detoxification mechanisms. In contrast to nicotine, epibatidine, and other ammonium or iminium nicotinoids, which are mostly protonated at physiological pH, the neonicotinoids are not protonated and have an electronegative nitro or cyano pharmacophore. Agonist recognition by the nicotinic receptor involves cation-π interaction for nicotinoids in mammals and possibly a cationic subsite for interaction with the nitro or cyano substituent of neonicotinoids in insects. The low affinity of neonicotinoids for vertebrate relative to insect nicotinic receptors is a major factor in their favorable toxicological profile.

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Metadata

Authors
Tomizawa, M., & Casida, J. E.
Venue
Annual Review of Pharmacology and Toxicology
Published
2005-09-22
Volume
45
Issue
1
Pages
247-268
ISSN
  • 0362-1642 (ISSN-L)
  • 1545-4304
OpenAlex
W2125205784
Cited by
1,741
References
0
FWCI
1.38
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: NEONICOTINOID INSECTICIDE TOXICOLOGY: Mechanisms of Selective Action. https://app.cochat.ai/papers/10.1146/annurev.pharmtox.45.120403.095930
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Tomizawa, M., & Casida, J. E. (2005). NEONICOTINOID INSECTICIDE TOXICOLOGY: Mechanisms of Selective Action. Annual Review of Pharmacology and Toxicology. https://doi.org/10.1146/annurev.pharmtox.45.120403.095930

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