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芬戈利莫德协同作用和逆转作用K. 肺炎是对胆固醇素的耐药性

Xiang Geng¹, Zhen-Dong Zhang¹, Yu-Xi Li¹

¹Key Lab of New Animal Drug of Gansu Province, Key Lab of Veterinary Pharmaceutical Development of Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou, China.

Frontiers in microbiology

|June 14, 2024

概括

芬戈利莫德 (FLD) 与胆固醇结合显示出针对Klebsiella pneumoniae的显著协同杀菌效应. 这种组合疗法增强了胆固醇蛋白的作用.

科学领域:

微生物学微生物学
药理学药理学是指药理学的学科.
传染性疾病传染性疾病

背景情况:

多重耐药 (MDR) 细菌,特别是Klebsiella pneumoniae,构成了全球严重的健康威胁.
胆固醇是对抗卡巴耐药格拉姆阴性感染的最后避难抗生素,但由于耐药性,其疗效正在下降.
迫切需要新的治疗策略来对抗MDR K. pneumoniae感染.

研究的目的:

调查fingolimod (FLD) 与素结合对抗Klebsiella pneumoniae的协同杀菌作用.
阐明FLD和素的协同作用背后的体外和体外机制.
在小鼠感染模型中评估FLD-胆固醇结合疗法的治疗潜力.

主要方法:

检查板方法来确定体外协同作用和分数抑制度 (FIC) 指数.
时间杀伤曲线测试以评估杀菌疗效.
对细菌膜的透性,完整性,流动性,膜潜力,活性氧物种 (ROS),ATP合成和脂肪酸代谢的分析.
在K. pneumoniae感染小鼠模型中的体内疗效评估.

主要成果:

芬戈利莫德 (FLD) 在实验室中与对抗K. pneumoniae的胆固醇有显著的协同作用,降低了FIC值<0.3.3的最小抑制度 (MIC).
组合治疗表现出强烈的杀菌活性,时间杀死曲线证明了这一点.
FLD和胆固醇破坏了细菌膜的完整性,改变了膜潜力,增加了ROS,扰乱了ATP合成,导致细胞死亡.
结合疗法显著提高了存活率至67%,并减少了K. pneumoniae小鼠感染模型中的病理损伤,与单独使用胆素相比.

结论:

芬戈利莫德 (FLD) 与胆固醇对抗Klebsiella pneumoniae具有显著的协同杀菌作用.
组合疗法针对多种细菌细胞过程,包括膜完整性和能量代谢.
作为一种潜在的辅助疗法,FLD有望成为对抗多药耐药Klebsiella肺炎引起的感染的潜在辅助疗法.

关键词:

在K. pneumoniae的肺炎中.抗生素抗生素是一种抗生素.科里斯蒂安 - 科里斯蒂安芬戈利莫德 (FLD) 是一种有协同作用的协同作用.

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