柠檬醛和香叶醇的毒理学评估:外排泵抑制金黄色葡萄球菌和无脊椎动物的毒性

Q1 Environmental Science
Gildênia Alves de Araújo , Cícera Datiane de Morais Oliveira Tintino , Raimundo Luíz Silva Pereira , Isaac Moura Araújo , Cícera Laura Roque Paulo , João Arthur de Oliveira Borges , Ewerton Yago de Sousa Rodrigues , Ângella Eduarda da Silva , Francisco Assis Bezerra da Cunha , Zildene de Sousa Silveira , Nair Silva Macedo , Henrique Douglas Melo Coutinho , José Maria Barbosa Filho , Daniela Maria do Amaral Ferraz Navarro , Francisco Roberto de Azevedo , Saulo Relison Tintino
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引用次数: 0

摘要

本研究旨在评价其对携带外排泵的多重耐药菌株的抗菌活性,并在黑腹果蝇和埃及伊蚊模型上评估其毒性。在肉汤中进行微量稀释试验以确定最低抑制浓度(MIC)。通过分析抗生素MIC和溴化乙啶(EtBr) MIC的降低来评价外排泵抑制作用。对黑腹田鼠标本进行死亡率测定和阴性地致性测定,对埃及伊蚊幼虫进行杀虫活性测定。在金黄色葡萄球菌1199B菌株中,只有香叶醇降低了抗生素MIC,从64 µg/mL降至16 µg/mL。当与EtBr联合使用时,香叶醇和柠檬醛都降低了EtBr的MIC,香叶醇从64 µg/mL降至16 µg/mL,柠檬醛从64 µg/mL降至32 µg/mL。对于金黄色葡萄球菌K2068菌株,香叶醇将抗生素MIC从16 µg/mL降低到8 µg/mL,柠檬醛将其从16 µg/mL降低到4 µg/mL。与EtBr联合,所有单萜烯将MIC从64 µg/mL降低到32 µg/mL。两种产物均对黑腹夜蛾有毒性;柠檬醛的LC50为2.478 μL,具有较高的毒性。在对埃及伊蚊的杀虫作用方面,两种产品均表现出累积效应毒性和剂量依赖性死亡率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Toxicological assessment of citral and geraniol: Efflux pump inhibition in Staphylococcus aureus and invertebrate toxicity
This study aimed to evaluate the antibacterial activity against multi-drug-resistant strains carrying efflux pumps and assess their toxicity on Drosophila melanogaster and Aedes aegypti models. Microdilution tests in broth were performed to determine the Minimum Inhibitory Concentration (MIC). The efflux pump inhibition was evaluated by analyzing the reduction in antibiotic MIC and Ethidium Bromide (EtBr) MIC when combined with the products. Mortality assay and negative geotaxis were conducted on D. melanogaster specimens, and insecticidal activity assays were performed on A. aegypti larvae. Only geraniol reduced the antibiotic MIC when combined, reducing from 64 µg/mL to 16 µg/mL in the 1199B strain of S. aureus. When combined with EtBr, both geraniol and citral reduced EtBr MIC, with geraniol decreasing from 64 µg/mL to 16 µg/mL and citral decreasing from 64 µg/mL to 32 µg/mL. Regarding the S. aureus K2068 strain, geraniol reduced the antibiotic MIC from 16 µg/mL to 8 µg/mL, and citral reduced it from 16 µg/mL to 4 µg/mL. In combination with EtBr, all monoterpenes reduced MIC from 64 µg/mL to 32 µg/mL. Both products exhibited toxicity in D. melanogaster; however, citral showed higher toxicity with a precisely determined LC50 of 2.478 μL. As for the insecticidal action on A. aegypti, both products demonstrated toxicity with cumulative effects and dose-dependent mortality.
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来源期刊
Toxicology Reports
Toxicology Reports Environmental Science-Health, Toxicology and Mutagenesis
CiteScore
7.60
自引率
0.00%
发文量
228
审稿时长
11 weeks
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