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Kadala A, Charreton M, Collet C. Flubendiamide, the first phthalic acid diamide insecticide, impairs neuronal calcium signalling in the honey bee's antennae. J Insect Physiol 2020; 125:104086. [PMID: 32628959 DOI: 10.1016/j.jinsphys.2020.104086] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 07/01/2020] [Accepted: 07/01/2020] [Indexed: 06/11/2023]
Abstract
Calcium is an important intracellular second messenger involved in several processes such as the transduction of odour signals and neuronal excitability. Despite this critical role, relatively little information is available with respect to the impact of insecticides on the dynamics of intracellular calcium homeostasis in olfactory neurons. For the first time here, physiological stimuli (depolarizing current or pheromone) were shown to elicit calcium transients in peripheral neurons from the honey bee antenna. In addition, neurotoxic xenobiotics (the first synthetic phthalic diamide insecticide flubendiamide or botanical alkaloids ryanodine and caffeine) do interfere with normal calcium homeostasis. Our in vitro experiments show that these three xenobiotics can induce sustained abnormal calcium transients in antennal neurons. The present results provide a new insight into the toxicity of diamides, showing that flubendiamide drastically impairs calcium homeostasis in antennal neurons. We propose that a calcium imaging assay should provide an efficient tool dedicated to the modern assessment strategies of insecticides toxicity.
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Affiliation(s)
- Aklesso Kadala
- INRAE, UR406 Abeilles et Environnement, 84914 Avignon, France; UMT PRADE, Protection des Abeilles dans l'Environnement, 84914 Avignon, France
| | - Mercédès Charreton
- INRAE, UR406 Abeilles et Environnement, 84914 Avignon, France; UMT PRADE, Protection des Abeilles dans l'Environnement, 84914 Avignon, France
| | - Claude Collet
- INRAE, UR406 Abeilles et Environnement, 84914 Avignon, France; UMT PRADE, Protection des Abeilles dans l'Environnement, 84914 Avignon, France.
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Kadala A, Charreton M, Charnet P, Collet C. Honey bees long-lasting locomotor deficits after exposure to the diamide chlorantraniliprole are accompanied by brain and muscular calcium channels alterations. Sci Rep 2019; 9:2153. [PMID: 30770849 PMCID: PMC6377601 DOI: 10.1038/s41598-019-39193-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 01/14/2019] [Indexed: 11/24/2022] Open
Abstract
Diamides belong to one of the newest insecticides class. We characterized cellular effects of the first commercialized diamide, chlorantraniliprole (ChlorAnt). ChlorAnt not only induces a dose-dependent calcium release from internal stores of honey bee muscle cells, but also a dose-dependent blockade of the voltage-gated calcium current involved in muscles and brain excitability. We measured a long lasting impairment in locomotion after exposure to a sublethal dose and despite an apparent remission, bees suffer a critical relapse seven days later. A dose that was sublethal when applied onto the thorax turned out to induce severe mortality when applied on other body parts. Our results may help in filling the gap in the toxicological evaluation of insecticides that has recently been pointed out by international instances due to the lack of suitable tests to measure sublethal toxicity. Intoxication symptoms in bees with ChlorAnt are consistent with a mode of action on intracellular calcium release channels (ryanodine receptors, RyR) and plasma membrane voltage-gated calcium channels (CaV). A better coupling of in vitro and behavioral tests may help in more efficiently anticipating the intoxication symptoms.
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Affiliation(s)
- Aklesso Kadala
- INRA, UR406 Abeilles et Environnement, Toxicologie Environnementale, 84914, Avignon, France
- UMT PRADE, Protection des Abeilles dans l'Environnement, 84914, Avignon, France
| | - Mercédès Charreton
- INRA, UR406 Abeilles et Environnement, Toxicologie Environnementale, 84914, Avignon, France
- UMT PRADE, Protection des Abeilles dans l'Environnement, 84914, Avignon, France
| | - Pierre Charnet
- IBMM UMR CNRS 5247, Université de Montpellier, 34293, Montpellier, France
| | - Claude Collet
- INRA, UR406 Abeilles et Environnement, Toxicologie Environnementale, 84914, Avignon, France.
- UMT PRADE, Protection des Abeilles dans l'Environnement, 84914, Avignon, France.
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Kadala A, Charreton M, Charnet P, Cens T, Rousset M, Chahine M, Vaissière BE, Collet C. Voltage-gated sodium channels from the bees Apis mellifera and Bombus terrestris are differentially modulated by pyrethroid insecticides. Sci Rep 2019; 9:1078. [PMID: 30705348 PMCID: PMC6355911 DOI: 10.1038/s41598-018-37278-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 12/05/2018] [Indexed: 11/23/2022] Open
Abstract
Recent experimental and in-field evidence of the deleterious effects of insecticides on the domestic honey bee Apis mellifera have led to a tightening of the risk assessment requirements of these products, and now more attention is being paid to their sublethal effects on other bee species. In addition to traditional tests, in vitro and in silico approaches may become essential tools for a comprehensive understanding of the impact of insecticides on bee species. Here we present a study in which electrophysiology and a Markovian multi-state modelling of the voltage-gated sodium channel were used to measure the susceptibility of the antennal lobe neurons from Apis mellifera and Bombus terrestris, to the pyrethroids tetramethrin and esfenvalerate. Voltage-gated sodium channels from Apis mellifera and Bombus terrestris are differentially sensitive to pyrethroids. In both bee species, the level of neuronal activity played an important role in their relative sensitivity to pyrethroids. This work supports the notion that honey bees cannot unequivocally be considered as a surrogate for other bee species in assessing their neuronal susceptibility to insecticides.
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Affiliation(s)
- Aklesso Kadala
- INRA, UR 406 Abeilles et Environnement, 84914, Avignon, France
| | - Mercédès Charreton
- INRA, UR 406 Abeilles et Environnement, 84914, Avignon, France
- UMT PRADE, Protection des Abeilles dans l'Environnement, 84914, Avignon, France
| | - Pierre Charnet
- CNRS, UMR 5237, Centre de Recherche de Biochimie Macromoléculaire, Université Montpellier 2, Montpellier, France
| | - Thierry Cens
- CNRS, UMR 5237, Centre de Recherche de Biochimie Macromoléculaire, Université Montpellier 2, Montpellier, France
| | - Mathieu Rousset
- CNRS, UMR 5237, Centre de Recherche de Biochimie Macromoléculaire, Université Montpellier 2, Montpellier, France
| | - Mohamed Chahine
- Department of Medicine, Université Laval, Quebec City, QC, G1K 7P4, Canada
| | - Bernard E Vaissière
- INRA, UR 406 Abeilles et Environnement, 84914, Avignon, France
- UMT PRADE, Protection des Abeilles dans l'Environnement, 84914, Avignon, France
| | - Claude Collet
- INRA, UR 406 Abeilles et Environnement, 84914, Avignon, France.
- UMT PRADE, Protection des Abeilles dans l'Environnement, 84914, Avignon, France.
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