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空肠弯曲菌生物膜相关过程中的机制概念:在家禽环境中的持久性和抑制作用。

Mechanistic concepts involved in biofilm associated processes of Campylobacter jejuni: persistence and inhibition in poultry environments.

作者信息

Bundurus Iulia A, Balta Igori, Pet Ioan, Stef Lavinia, Popescu Cosmin Alin, McCleery David, Lemon Joanne, Callaway Todd, Douglas Alastair, Corcionivoschi Nicolae

机构信息

Faculty of Bioengineering of Animal Resources, University of Life Sciences King Mihai I From Timisoara, Timisoara 300645, Romania.

Faculty of Agriculture, University of Life Sciences King Mihai I From Timisoara, Timisoara 300645, Romania.

出版信息

Poult Sci. 2024 Dec;103(12):104328. doi: 10.1016/j.psj.2024.104328. Epub 2024 Sep 12.

Abstract

Campylobacter species, predominantly Campylobacter jejuni, remains a significant zoonotic pathogen worldwide, with the poultry sector being the primary vector for human transmission. In recent years. there has been a notable rise in the incidence of human campylobacteriosis, necessitating a deeper understanding of the pathogen's survival mechanisms and transmission dynamics. Biofilm presence significantly contributes to C. jejuni persistence in poultry and subsequent food product contamination, and this review describes the intricate processes involved in biofilm formation. The ability of Campylobacter to form biofilms on various surfaces, including stainless steel, plastic, and glass, is a critical survival strategy. Campylobacter biofilms, with their remarkable resilience, protect the pathogen from environmental stresses such as desiccation, pH extremes, biocides and sanitizing agents. This review explores the molecular and genetic mechanisms of C. jejuni biofilm formation, highlighting regulatory genes involved in motility, chemotaxis, and stress responses. Flagellar proteins, particularly flaA, flaB, flaG, and adhesins like cadF and flpA, are identified as the main molecular components in biofilm development. The role of mixed-species biofilms, where C. jejuni integrates into existing biofilms of other bacteria to enhance pathogen resilience, is also discussed. This review also considers alternative interventions to control C. jejuni in poultry production, in the context of increasing antibiotic resistance. It explores the effectiveness of prebiotics, probiotics, synbiotics, bacteriocins, bacteriophages, vaccines, and organic acids, with a focus on their mechanisms of action in reducing bacterial colonization and biofilm formation. Studies show that mixtures of organic acids and compounds like Carvacrol and Eugenol significantly downregulate genes linked with motility and adhesion, thereby disrupting biofilm integrity. It discusses the impact of environmental factors, such as temperature and oxygen levels on biofilm formation, providing insights into how industrial conditions can be manipulated to reduce contamination. This paper stresses the need for a multifaceted approach to control Campylobacter in poultry, integrating molecular and genetic insights with practical interventions. By advancing our understanding of biofilm dynamics and gene regulation, we aim to inform the development of more effective strategies to enhance food safety and protect public health.

摘要

弯曲杆菌属,主要是空肠弯曲杆菌,仍然是全球一种重要的人畜共患病原体,家禽业是人类传播的主要载体。近年来,人类弯曲杆菌病的发病率显著上升,因此有必要更深入地了解该病原体的生存机制和传播动态。生物膜的存在显著促进了空肠弯曲杆菌在家禽中的持续存在以及随后对食品的污染,本综述描述了生物膜形成所涉及的复杂过程。弯曲杆菌在包括不锈钢、塑料和玻璃在内的各种表面形成生物膜的能力是一种关键的生存策略。弯曲杆菌生物膜具有显著的弹性,可保护病原体免受诸如干燥、极端pH值、杀菌剂和消毒剂等环境压力的影响。本综述探讨了空肠弯曲杆菌生物膜形成的分子和遗传机制,重点介绍了参与运动性、趋化性和应激反应的调控基因。鞭毛蛋白,特别是flaA、flaB、flaG,以及诸如cadF和flpA等黏附素,被确定为生物膜发育中的主要分子成分。还讨论了混合物种生物膜的作用,即空肠弯曲杆菌融入其他细菌的现有生物膜以增强病原体的弹性。在抗生素耐药性不断增加的背景下,本综述还考虑了在家禽生产中控制空肠弯曲杆菌的替代干预措施。它探讨了益生元、益生菌、合生元、细菌素、噬菌体、疫苗和有机酸的有效性,重点关注它们在减少细菌定植和生物膜形成方面的作用机制。研究表明,有机酸与香芹酚和丁香酚等化合物的混合物可显著下调与运动性和黏附相关的基因,从而破坏生物膜的完整性。它讨论了环境因素,如温度和氧气水平对生物膜形成的影响,为如何控制工业条件以减少污染提供了见解。本文强调需要采取多方面的方法来控制家禽中的弯曲杆菌,将分子和遗传见解与实际干预措施相结合。通过加深我们对生物膜动态和基因调控的理解,我们旨在为制定更有效的策略提供信息,以提高食品安全并保护公众健康。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ec07/11483643/112cae963a3c/gr1.jpg

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