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Toxicity of methyl eugenol against Drosophila melanogaster and its myorelaxant activity in bronchioles isolated from Sus scrofa domesticus

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Abstract

This study aimed to evaluate the toxic action of methyl eugenol against Drosophila melanogaster and to evaluate the myorelaxant effect of this constituent on bronchioles isolated from swine from the Sus scrofa domesticus species. The toxicity assay was performed using the fumigation method while myorelaxant activity was assessed by the administration of increasing and cumulative concentrations (1–1000 μM) to swine bronchial rings under 1 gF tension in an organ bath precontracted with 60 mM potassium chloride (KCl) and 10 μM acetylcholine (ACh). The results showed that methyl eugenol possessed insecticidal action (LC50 0.116 μg/mL of air). The compound showed a myorelaxant activity over bronchioles (IC50 of 25.50±14.93 μM and 12.79±9.57 μM for KCl and ACh, respectively). This study serves as starting point for further detailed studies focusing on both the insecticidal and bronchodilatory activity of methyl eugenol.

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Abbreviations

ACh:

Acetylcholine

AChE:

Acetylcholinesterase

EOs:

Essential oils

IC50 :

Concentration of the substance that is capable of producing 50% of the maximum inhibitory effect.

KCl:

Potassium chloride

LC50 :

Lethal concentration to cause 50% mortality in a population

PET:

Polypropylene terephthalate

TM:

Modified Tyrode

3 Rs:

Replacement, reduction, refinement

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Acknowledgments

This study was funded by the Fundação Cearense de Apoio ao Desenvolvimento Científico e Tecnológico ´ – FUNCAP (BP3-0139- 00077.01.00/18) e (BPI 02/2020 NÚMERO: BP4-0172-00168.01.00/20 SPU N°: 09673071/2020; Geopark Araripe; Conselho Nacional de Desenvolvimento Científico e Tecnológico – CNPq.

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Correspondence to Francisco Assis Bezerra da Cunha.

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de Souza, M.A., Pereira-de-Morais, L., Silveira, Z.S. et al. Toxicity of methyl eugenol against Drosophila melanogaster and its myorelaxant activity in bronchioles isolated from Sus scrofa domesticus. Biologia 76, 1275–1283 (2021). https://doi.org/10.2478/s11756-020-00672-y

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  • DOI: https://doi.org/10.2478/s11756-020-00672-y

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