林罗恩-1和EDTA对牛乳腺炎病原体的协同抗菌活性
Ana Julia S Moreira1,2, Katialaine C de Araújo Domingues1, Karine D V Camargo3
1Department of Microbiology, Universidade Federal de Viçosa, Viçosa, MG, Brazil.
The Journal of antimicrobial chemotherapy
|November 25, 2024
概括
像Lyn-1这样的抗菌可以作为牛乳腺炎的抗生素替代品. 一种Lyn-1和EDTA的组合显示出协同作用的抗微生物活性,为新的治疗提供了潜力.
科学领域:
- 兽医医学 兽医医学 兽医医学
- 微生物学 微生物学
- 生物化学 生物化学
背景情况:
- 牛乳炎是乳制品行业的重大经济负担,也是抗生素使用的主要驱动因素.
- 这种广泛使用抗生素有助于日益严重的抗菌素耐药性危机.
- 抗微生物 (AMP) 正在被探索作为用于控制乳腺炎的常规抗生素的潜在替代品.
研究的目的:
- 评估五种AMP和两种生物活性化合物对导致乳腺炎的病原体的疗效.
- 使用分数抑制度指数 (FICI) 确定化合物之间的协同作用.
- 评估有效组合的杀菌性,细胞毒性和血液溶解性.
主要方法:
- 对35种乳腺炎病原体进行了5种AMP (Lyn-1,Lyn-2,Bovicin HC5,AMP 660,AMP 1043) 和2种化合物 (EDTA,糖单酸) 的测试.
- 计算FICI以确定协同作用的相互作用 (FICI ≤0.5).
- 进行了杀时测试,MTT细胞毒性测试和血液溶解测试.
主要成果:
- 林-1和EDTA表现出广泛的抗菌活性,分别减少了95.1%和86.9%的细菌生长.
- 观察到协同作用相互作用,FICI值在0.1到0.5.5之间.
- 在较低度下,Lyn-1-EDTA组合显示出增强的抗菌活性,在12小时内减少了超过10,000倍的细菌种群. 它是非血液溶解性的,但在较高度时显示出一些细胞毒性.
结论:
- 林恩-1和林恩-1-EDTA组合显示出显著的治疗潜力.
- 这些发现支持开发无抗生素配方来治疗牛乳腺炎.
- 这项研究提供了一种有希望的策略,以对抗传染性和环境乳腺炎病原体.
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