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Hamoy AO, da Fonseca SM, Cei GL, Júnior FLDA, Hamoy MKO, Ribeiro RM, Barbas LAL, Muto N, Hamoy M. Behavioral, electrocorticographic and electrocardiologic changes in Colossoma macropomum (Tambaqui) in the effect of cunaniol. PLoS One 2023; 18:e0287681. [PMID: 37390086 PMCID: PMC10313049 DOI: 10.1371/journal.pone.0287681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 06/08/2023] [Indexed: 07/02/2023] Open
Abstract
The Clibadium spp. is a shrub of occurrence in the Amazon, popularly known as Cunambi. The compounds in the leaves demonstrate ichthyotoxic properties, and its major substance, cunaniol, is a powerful central nervous system stimulant with proconvulsant activity. Few current studies relate behavioral changes to the electrophysiological profile of fish poisoning. This study aimed to describe the behavioral, electromyographic, electroencephalographic, electrocardiographic, and seizure control characteristics of anticonvulsant drugs in Colossoma macropomum submitted to cunaniol intoxication during bathing containing 0.3 μg/L cunaniol. The behavioral test showed rapid evolution presenting excitability and spasms, which were confirmed by the analysis of Electroencephalogram (EEG), Electromyogram (EMG), and changes in cardiac function detected in the ECG. Cunaniol-induced excitability control was evaluated using three anticonvulsant agents: Phenytoin, Phenobarbital, and Diazepam. While phenytoin was not effective in seizure control, diazepam proved to be the most efficient. These results demonstrate the susceptibility of Colossoma macropomum to cunaniol poisoning, given that the central nervous system and electrocardiographic changes were considered severe.
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Affiliation(s)
- Akira Otake Hamoy
- Laboratory of Pharmacology and Toxicology of Natural Products, Biological Sciences Institute, Federal University of Para, Belem, Para, Brazil
| | - Suzane Maia da Fonseca
- Laboratory of Pharmacology and Toxicology of Natural Products, Biological Sciences Institute, Federal University of Para, Belem, Para, Brazil
| | - Giovanna Lourenço Cei
- Laboratory of Pharmacology and Toxicology of Natural Products, Biological Sciences Institute, Federal University of Para, Belem, Para, Brazil
| | - Fábio Leite do Amaral Júnior
- Laboratory of Pharmacology and Toxicology of Natural Products, Biological Sciences Institute, Federal University of Para, Belem, Para, Brazil
| | - Maria Klara Otake Hamoy
- Laboratory of Pharmacology and Toxicology of Natural Products, Biological Sciences Institute, Federal University of Para, Belem, Para, Brazil
| | - Rafaela Marques Ribeiro
- Laboratory of Pharmacology and Toxicology of Natural Products, Biological Sciences Institute, Federal University of Para, Belem, Para, Brazil
| | - Luis Andre Luz Barbas
- Tropical Species Aquaculture Laboratory, Federal Institute of Education, Science and Technology of Pará (IFPA), Castanhal Campus, Castanhal, Brazil
| | - Nilton Muto
- Center for the Valorization of Bioactive Compounds, Institute of Biological Sciences, Federal University of Pará, Belém, PA, Brazil
| | - Moisés Hamoy
- Laboratory of Pharmacology and Toxicology of Natural Products, Biological Sciences Institute, Federal University of Para, Belem, Para, Brazil
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