由Cutibacterium acnes引起的假肢关节感染的基因组特征和临床评估
C Liew-Littorin1, S Davidsson2, Å Nilsdotter-Augustinsson3
1Department of Obstetrics and Gynaecology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.
Microbiology spectrum
|October 8, 2024
概括
来自假肢关节感染 (PJI) 的Cutibacterium acnes (C. acnes) 没有显示与感染严重程度相关的特定基因组特征. 大多数C. acnes PJI病例都得到了成功的治疗,这表明它们起源于患者皮肤微生物组.
科学领域:
- 微生物学 微生物学
- 基因组学就是基因组学.
- 整形外科手术 整形外科手术
背景情况:
- 杆菌 (C. acnes) 是一种可引起机会性感染的皮肤病,包括假肢关节感染 (PJIs).
- 区分真正的C. acnes感染与PJI组织培养中的污染是具有挑战性的.
- 菌经常与肩膀PJIs有关,但也可能影响其他关节假肢.
研究的目的:
- 调查部和肩部PJIs中C. acnes分离物之间的基因组相关性和共同特征.
- 为了将C. acnes基因组特征与PJI病例中的临床过程和患者结果相关联.
- 为了确定特定的C. acnes遗传系或毒性因素是否与PJI的发展有关.
主要方法:
- 从37名PJI患者中分离的C. acnes分子特征,包括序列类型 (ST) 和病毒性决定因素的分析.
- 对患者病历进行审查,以评估临床疗程和治疗结果.
- 毒性因子的家族遗传学分析和STs在隔离物之间的比较.
主要成果:
- 大多数C. acnes PJI分离物属于IA1型,来自同一患者的多个分离物共享相同的ST.
- 在PJI分离物中没有发现共享的基因组模式或特定的毒性因子特征.
- 大多数患者,包括那些患有多微生物感染的患者,在炎症标记较低的情况下获得了成功的治疗结果,尽管肩膀PJIs的失败率高于部PJIs.
结论:
- 来自PJIs的C. acnes分离物不表现出特定的基因组特征或病毒性因子配置文件,从而预测感染的严重程度或结果.
- 这些发现表明,PJI中的C. acnes可能起源于患者内源性皮肤微生物组,在手术期间接种了疫苗.
- 对于C. acnes PJIs,即使在多微生物病例中,成功的治疗结果是常见的,但肩部感染可能有较差的预后.
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