In Vitro Antibacterial and Postantibiotic Effects of Enrofloxacin Combined With Sulfamonomethoxine Against Pathogenic Bacteria of Yellow Catfish (Pelteobagrus fulvidraco)
文献类型： 外文期刊
作者： Jia, Bofan 1 ; Zhao, Yang 1 ; Zhang, Sirong 1 ; Deng, Jianchao 1 ; Chen, Shengjun 1 ; Li, Chunsheng 1 ; Huang, Hui 1 ; Deng, Yiqin 1 ; Xu, Liwen 1 ; Qi, Bo 1 ; Hu, Xiao 1 ; Zhao, Yongqiang 1 ; Li, Laihao 1 ;
作者机构： 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Natl Res & Dev Ctr Aquat Prod Proc, Key Lab Aquat Prod Proc,Minist Agr & Rural Affairs, Guangzhou, Peoples R China
2.Shanghai Ocean Univ, Coll Food, Shanghai, Peoples R China
3.Sanya Trop Fisheries Res Inst, Key Lab Efficient Utilizat & Proc Marine Fishery R, Sanya, Peoples R China
关键词： antimicrobial; antimicrobial susceptibility testing; drug resistance; PAE duration; synergistic effect
期刊名称：AQUACULTURE RESEARCH （ 影响因子：1.9； 五年影响因子：2.2 ）
ISSN： 1355-557X
年卷期： 2024 年 2024 卷 1 期
页码：
收录情况： SCI
摘要： Research on the synergistic effect of combined antibacterial agents has contributed significantly to addressing microbiological challenges, particularly bacterial resistance mutations. This study employed a combination of enrofloxacin (ENR) and sulfamonomethoxine (SMM) to conduct in vitro antimicrobial susceptibility tests and assess postantibiotic effects (PAEs) against three primary pathogens, Edwardsiella ictaluri, Aeromonas veronii, and Aeromonas hydrophila, known to afflict yellow catfish (Pelteobagrus fulvidraco). The results indicated that the minimum inhibitory concentrations (MICs) of ENR against E. ictaluri, A. veronii, and A. hydrophila were 0.25, 0.125, and 0.125 mu g/mL, respectively. The MICs of SMM against these pathogens were 800, 700, and 700 mu g/mL, respectively. Notably, the combination of ENR and SMM exhibited synergistic effects across all tested strains, increasing the PAE duration compared to ENR or SMM alone at the same concentration (p < 0.05). In addition, the increase in PAE duration and enhanced antibacterial efficacy observed with the ENR-SMM combination demonstrated a positive correlation with the total drug concentration. These results suggest that the combination of ENR and SMM reduced the dosage of individual antibacterial agents while ensuring an efficient antibacterial effect. This approach holds promise for the treatment of bacterial infections in the yellow catfish.
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