设计上具有弹性:环境压力促进了禽类相关的沙门氏菌的生物膜形成和多重耐药性
Gabriel I Krüger1,2, Francisca Urbina1, Coral Pardo-Esté1,3
1Laboratorio de Microbiología Molecular, Facultad de Ciencias de la Vida, Universidad Andres Bello, Republica 330, Santiago 8370146, Chile.
Microorganisms
|August 28, 2025
概括
沙门氏菌是一种多药耐药的病原体, 形成强大的生物膜, 增强对工业消毒剂的生存能力. 了解其适应食品加工压力因素是控制食源性疾病的关键.
科学领域:
- 食品安全和微生物学
- 细菌的适应性和耐药性
- 通过食物传播的病原体控制
背景情况:
- 沙门氏菌是全球主要的食源性疾病,通常与食品加工和制备有关.
- 尽管食品植物的消毒, 沙门氏菌仍然存在, 给人类健康带来风险.
- 本研究检查了工业压力下的家禽生产中的沙门氏菌肠道血清型的适应性特征.
研究的目的:
- 调查来自家禽生产的主要Salmonella enterica血清型的适应能力.
- 在酸性,氧化和透应激下分析复制,抗菌耐药性和生物膜形成.
- 评估消毒剂耐受性和抗生素耐药性.
主要方法:
- 使用生长曲线分析,水晶紫色染色和显微镜来评估细菌反应.
- 最低抑制度 (MIC) 和最小杀菌度 (MBC) 确定了二的耐受性.
- 通过Kirby-Bauer方法评估抗生素耐药性模式.
主要成果:
- 酸性和透性压力通常会降低沙门氏菌的生长,除了Infantis,Heidelberg和Corvallis血清型.
- 沙门氏菌具有强烈的生物膜生成和高多药性 (71%).
- 生物膜形成的Salmonella Infantis需要8倍高的酸盐度进行根除;压力诱导生物膜形成.
结论:
- 在工业压力下,Salmonella Infantis表现出显著的适应性,包括增强的生物膜形成和多药性耐药性.
- 有效的控制策略必须针对适应的沙门氏菌株,特别是沙门氏菌的耐药性.
- 了解沙门氏菌对工业环境的反应对于预防食源性疾病至关重要.
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