title: Transmissions of serotonin, dopamine, and glutamate are required for the formation of neurotoxicity from Al2O3-NPs in nematode Caenorhabditis elegans.
abstract: In this study, we investigated genetic mechanisms of neurotransmitters in regulating the formation of adverse effects on locomotion behavior in Al2O3 nanoparticles (NPs)-exposed Caenorhabditis elegans. Al2O3-NPs exposure caused the decrease of locomotion behavior with head thrash and body bend as endpoints. Interestingly, the neurotransmitters of glutamate, serotonin, and dopamine were required for the adverse effects of Al2O3-NPs on locomotion behavior in nematodes. Glutamate transporter EAT-4, serotonin transporter MOD-5, and dopamine transporter DAT-1 might serve as the molecular targets of Al2O3-NPs for neurotoxicity formation. Moreover, the behavioral response of nematodes to Al2O3-NPs exposure was primarily mediated by non-NMDA glutamate receptors GLR-2 and GLR-6, ionotropic serotonin receptor MOD-1, and D1-like dopamine receptor DOP-1. Therefore, Al2O3-NPs exposure influences locomotion behavior of nematodes primarily by impinging on their glutamatergic, serotoninergic, and dopaminergic systems. Our data will shed light on questions surrounding the involvement of neurotransmitters in mediating the adverse behavioral effects from Al2O3-NPs.
authors.affiliation: Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Department of Biochemistry and Molecular Biology, Medical School of Southeast University , Nanjing , China.
authors.forename: Yinxia
authors.initials: Y
authors.lastname: Li
authors.forename: Shunhui
authors.initials: S
authors.lastname: Yu
authors.forename: Qiuli
authors.initials: Q
authors.lastname: Wu
authors.forename: Meng
authors.initials: M
authors.lastname: Tang
authors.forename: Dayong
authors.initials: D
authors.lastname: Wang
mesh_terms: D000537:Aluminum Oxide / Q000633:toxicity*; D000704:Analysis of Variance; D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects; D017173:Caenorhabditis elegans / Q000187:drug effects* / Q000378:metabolism*; D004298:Dopamine / Q000235:genetics / Q000378:metabolism*; D018698:Glutamic Acid / Q000235:genetics / Q000378:metabolism*; D008124:Locomotion / Q000187:drug effects; D053758:Nanoparticles / Q000633:toxicity*; D009498:Neurotoxins / Q000633:toxicity; D018377:Neurotransmitter Agents / Q000235:genetics / Q000378:metabolism; D017981:Receptors, Neurotransmitter / Q000378:metabolism; D012701:Serotonin / Q000235:genetics / Q000378:metabolism*
chemical_list: D009498:Neurotoxins; D018377:Neurotransmitter Agents; D017981:Receptors, Neurotransmitter; D012701:Serotonin; D018698:Glutamic Acid; D000537:Aluminum Oxide; D004298:Dopamine