与肺炎患者住院成人的肺炎球菌殖民地相变相关的临床特征
Shuhei Ideguchi1,2, Kazuko Yamamoto1,2, Takahiro Takazono2
1First Department of Internal Medicine, Division of Infectious, Respiratory, and Digestive Medicine, University of the Ryukyus Graduate School of Medicine, Okinawa, Japan.
造成肺炎的细菌Streptococcus pneumoniae的不透明变体与患者的细菌病率更高有关. 这一发现表明不透明可能预测侵入性肺炎球菌病 (IPD).
科学领域:
- 微生物学与传染病的研究
- 细菌病原体的产生
- 临床医学 临床医学
背景情况:
- 肺炎链球菌 (Streptococcus pneumoniae) 引起肺炎和侵入性肺炎球菌病 (IPD),但入侵机制尚不清楚.
- 肺炎球菌殖民地呈现不透明和透明的变异,与动物模型中的入侵性和殖民性有关.
- 这项研究调查了肺炎球菌菌落不透明度与人类肺炎严重程度之间的联系.
研究的目的:
- 评估肺炎球菌殖民地不透明度与肺炎球菌肺炎的临床表现之间的关联.
- 为了确定殖民地不透明是否可以作为侵入性肺炎球菌病的预测因素.
主要方法:
- 对92名患有肺炎球菌性肺炎住院的成年患者 (2012-2019) 的回顾性研究.
- 从呼吸器样本中分析肺炎球菌菌株的血清型和殖民地不透明度.
- 排除粘膜菌株 (血清型3和37) 由于不同的形态.
主要成果:
- 45%的分离物是不透明的,13%是透明的,42%是混合变体.
- 在不透明和非不透明组之间,患者人口统计学或肺炎严重程度指数没有显著差异.
- 与非不透明的变种相比,在不透明的肺炎球菌变种患者中观察到显著更高的细菌病率.
结论:
- 不透明的肺炎球菌变体与细菌病的增加有关,这表明它在侵袭性疾病中发挥了作用.
- 殖民地不透明度评估可能是预测侵入性肺炎球菌病 (IPD) 的有用指标.
- 对不透明相变机制的进一步研究可以阐明IPD病原性.
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