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唾液作为一种替代样品类型,用于检测幼儿肺炎球菌携带者的唾液
Anne L Wyllie1,2, Nynke Y Rots3, Alienke J Wijmenga-Monsuur3
1Paediatric Immunology and Infectious Diseases, Wilhelmina Children's Hospital, University Medical Center Utrecht, Utrecht, The Netherlands.
Microbiology (Reading, England)
|October 11, 2023
概括
在儿童中检测肺炎球菌携带者至关重要. 用qPCR测试的鼻口腔扫描是最敏感的,但唾液样本提供了对肺炎球菌殖民的补充检测.
科学领域:
- 儿童传染病 儿童传染病
- 微生物学 微生物学
- 分子诊断学 分子诊断学
背景情况:
- 常规培养的鼻抽样是检测儿童肺炎球菌携带者的标准.
- 唾液已经成为肺炎球菌殖民监测的敏感方法,特别是在老年人群中.
- 唾液与鼻抽样在幼儿肺炎球菌检测中的敏感性,特别是疫苗接种后,需要进一步调查.
研究的目的:
- 为了比较配对的鼻和唾液样本在PCV7接种的24个月大的儿童中检测肺炎球菌携带者的灵敏度.
- 评估在这些样本类型中检测肺炎球菌的常规培养和分子 (qPCR) 方法.
- 为了确定唾液采样的附加价值,用于全面的肺炎球菌运输评估.
主要方法:
- 从288名24个月大的儿童收集了配对的鼻和唾液样本.
- 在所有样本上进行常规诊断培养.
- 利用从培养生长中提取的DNA上的qPCR检测肺炎球菌基因 (piaB,lytA) 和特定的血清型.
主要成果:
- 鼻拭片上的qPCR检测到的载体最多 (65%),明显超过常规培养 (60%) 或唾液上的qPCR (54%).
- 由于多微生物的过度生长,常规培养的唾液是不可行的.
- 唾液样本确定了15%的携带者被鼻口腔拭子遗漏,突出了其补充作用.
结论:
- 鼻拭片的qPCR测试是婴儿肺炎球菌检测最敏感的方法.
- 唾液采样,虽然总体上不那么敏感,但捕获了大量的携带者,这些携带者被鼻抽样遗漏了.
- 唾液可以作为一种有价值的补充工具,用于全面的肺炎球菌携带和血清型监测,特别是在纵向研究中.
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