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Lipopolysaccharides (LPS) are crucial components of the outer membrane of Gram-negative bacteria, serving both structural and functional roles. It contributes to membrane stability and protects bacteria from host immune responses. LPS is composed of three major regions—lipid A, a core oligosaccharide, and an O antigen. The biosynthesis and assembly of LPS involve a highly coordinated set of enzymatic reactions and transport mechanisms. Additionally, LPS is recognized as an endotoxin,...
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在二次内牙感染中,LPS和LTA水平与临床特征之间的相关性

Ederaldo P Godoi1, Pedro Ivo G Fagundes1, Priscila A Francisco1

  • 1Department of Restorative Dentistry, Endodontics Division, Piracicaba Dental School, State University of Campinas-UNICAMP, Piracicaba, SP, Brazil.

Australian endodontic journal : the journal of the Australian Society of Endodontology Inc
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PubMed
概括

在所有需要重新处理的根通道中发现了细菌毒性因子,脂多糖 (LPS) 和脂铁醇酸 (LTA). 冠状元恢复影响这些水平,较高的LPS与骨再吸收和症状有关.

关键词:
在LPS中使用LPS.LTA LTA LTA LTA LTA LTA LTA LTA LTA LTA LTA LTA LTA LTA LTA LTA LTA LTA LTA LTA LTA牙周内科 牙周内科是指牙周内科.内毒素 (endotoxin) 是一种内毒素.利波泰可酸是围性疾病中的一种.周围的皮皮性疾病.进行再处理.毒性因素是毒性的因素.

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科学领域:

  • 牙周内科医院 牙周内科医院 牙周内科医院
  • 微生物学 微生物学
  • 牙周病学 牙周病学

背景情况:

  • 继发性或持续性根管感染往往需要进行内牙治疗.
  • 来自格拉姆阳性和格拉姆阴性细菌的毒性因子,如脂多糖 (LPS) 和酸 (LTA),在感染病原发生中发挥作用.
  • 在放射学上明显的上牙周炎是持续根管感染的常见后果.

研究的目的:

  • 量化需要重新处理的根通道中的脂聚糖 (LPS) 和脂铁醇酸 (LTA) 水平.
  • 调查这些细菌毒性因素与牙周炎的临床症状和迹象之间的相关性.
  • 探索冠状复原对根运河系统内的微生物负载的影响.

主要方法:

  • 从40名为二次性或持久性感染进行内牙治疗的患者的根通道采样样本.
  • 使用Limulus amebocyte lysate (LAL) 试验量化脂多糖 (LPS) 的量化.
  • 使用酶相关免疫吸收检测 (ELISA) 技术量化酸 (LTA).

主要成果:

  • 在所有分析的根管样本中检测到LPS和LTA.
  • 平均LPS水平为5.1欧盟/毫升 (±2.83),平均LTA水平为537.53ppg/毫升 (±134.14).
  • 在LPS和LTA水平之间建立了显著的相关性,并观察到临床特征,包括放射性骨再吸收和症状呈现.

结论:

  • 冠状元恢复状态是二次感染的根管中LPS和LTA负载的直接决定因素.
  • 增加的内毒素 (LPS) 度与增加的周围骨再吸收有关.
  • 较高的细菌毒性因子负载与内牙感染中临床迹象和症状的存在相关.