细菌负担,而不是局部免疫反应,在急性和慢性周围假肢关节感染之间有所不同
James B Doub1, Brian J De Palma2, Sumon Nandi2
1Division of Clinical Care and Research, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, Maryland, USA.
Surgical infections
|June 1, 2023
概括
在急性周围假肢关节感染 (PJI) 中,克拉姆染色检测到的细菌比慢性PJI更多. 然而,这两种感染类型都表现出类似的炎症,这表明免疫反应,而不仅仅是细菌负载,影响PJI结果.
科学领域:
- 整形外科 整形外科 整形外科
- 传染性疾病 传染性疾病
- 免疫学 免疫学 免疫学
背景情况:
- 假肢周关节感染 (PJI) 在骨科手术中带来了重大挑战.
- 对于PJI,Gram染料的诊断灵敏度在历史上一直很差.
- 了解急性和慢性PJI之间的细菌负担和宿主免疫反应的差异至关重要.
研究的目的:
- 为了比较在急性和慢性PJI中检测细菌的Gram染色敏感度.
- 评估和比较急性和慢性PJI的局部先天免疫反应.
- 研究不同类型的PJI中细菌负担和炎症之间的关系.
主要方法:
- 在2016年1月至2020年12月期间,对急性和慢性PJI患者的回顾性评估.
- 对细菌存在的格拉姆染色结果的分析和对炎症的多态核白细胞 (PMN) 的量化.
- 在急性 (n=70) 和慢性 (n=134) PJI队列之间,格拉姆染色敏感度和炎症水平的统计比较.
主要成果:
- 与慢性PJI (9.7%;p < 0.0001) 相比,急性PJI (61.4%) 的克拉姆染色敏感性显著更高.
- 在急性和慢性PJI之间,局部炎症水平相似.
- 亚组分析显示,慢性多微生物 (p=0.0229) 和慢性培养负 (p=0.0001) PJI 的炎症有差异.
结论:
- 尽管细菌负担不同,急性和慢性PJI表现出相似的局部炎症.
- 在PJI中,先天性免疫反应不仅仅由细菌负载决定.
- 进一步研究急性和慢性PJI的不同免疫反应是有必要的,以提高诊断和治疗.
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