橄油纳米乳液含有黄素:抗菌剂对抗多药耐药细菌
Maine Virgínia Alves Confessor1,2, Maria Anndressa Alves Agreles3, Luís André de Almeida Campos3
1Keizo Asami Institute (iLIKA), Federal University of Pernambuco (UFPE), Prof. Moraes Rego Avenue, 1235, Cidade Universitária, CEP, Recife, Pernambuco, 50670-901, Brazil. maine_alves@hotmail.com.
Applied microbiology and biotechnology
|February 27, 2024
概括
黄素纳米乳液 (NEs) 显示出强大的抗菌和抗菌膜活性,增强了对抗多药耐药的Klebsiella pneumoniae的Ceftazidime疗效. 这些稳定的NE显示出治疗具有挑战性的细菌感染的前景.
科学领域:
- 制药纳米技术 制药纳米技术
- 微生物学 微生物学
- 药物输送系统 药物输送系统
背景情况:
- 黄素 (CUR) 具有抗微生物特性,但在生物可用性和稳定性方面面临挑战.
- 纳米乳液 (NEs) 提供了一个有前途的输送系统,以增强CUR的治疗潜力.
- 多药耐药 (MDR) 细菌,特别是Klebsiella pneumoniae,对全球健康构成重大威胁.
研究的目的:
- 开发和表征稳定的黄素加载纳米乳液 (NE).
- 评估这些NE对各种细菌的抗菌和抗菌膜活性,包括MDR K. pneumoniae.
- 评估NE与塞夫塔齐 (CAZ) 对MDR K. pneumoniae.的协同作用.
主要方法:
- 开发两种含有CUR的NE配方 (NE-2-CUR,NE-4-CUR),使用加热,橄油,tween80和span80来制备.
- 物理化学表征包括颗粒大小,多分散度指数 (PDI),泽塔潜力 (ζ),pH和捕获效率 (EE).
- 进行结构,热和形态分析 (DRX,FTIR,DSC,TG,SEM).
- 最低抑制度 (MIC) 和最小杀菌度 (MBC) 的测定.
- 检查板方法来评估与ceftazidime的药物相互作用.
- 生物膜抑制试验 (MBIC).生物膜抑制试验.
主要成果:
- 成功开发了具有最佳物理化学特性 (例如,NE-2-CUR: 165.40 nm,PDI 0.254, ζ -33.20 mV;NE-4-CUR: 105.70 nm,PDI 0.459, ζ -32.10 mV) 和高EE (>99%) 的稳定NE.
- 新生菌对阳性和阴性细菌表现出显著的抗菌活性,MIC范围为125至250μg/mL.
- 在与塞夫塔齐结合对抗MDR K. pneumoniae时,NE表明了协同作用或添加作用,显著降低了塞夫塔齐的MICs.
- 在K. pneumoniae的临床分离物中,NE有效地抑制了生物膜的形成.
结论:
- 开发的黄素纳米乳液具有适合潜在临床应用的物理化学特性.
- 这些NEs增强了ceftazidime的抗菌和抗菌膜活性,为MDR K. pneumoniae感染提供了有前途的策略.
- 黄素纳米乳液代表了一种可行的方法来对抗具有挑战性的细菌感染,特别是由耐药病原体引起的细菌感染.
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