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Updated: Jul 11, 2026

Metagenomic Next-Generation Sequencing of Cerebrospinal Fluid for the Detection of Central Nervous System Pathogens
10:08

Metagenomic Next-Generation Sequencing of Cerebrospinal Fluid for the Detection of Central Nervous System Pathogens

Published on: April 17, 2026

[First experience with detecting bacterial DNA in the cerebrospinal fluid of patients with purulent meningitis using

Lenka Moravcová1, Dusan Pícha, Emanuel Zdárský

  • 1Univerzita Karlova, 2. lékarská fakulta, 1. infekcní linika, FN Bulovka, Praha. moravcol@fnb.cz

Klinicka Mikrobiologie a Infekcni Lekarstvi
|October 12, 2007
PubMed
Abstract

Insights

A novel nested PCR assay accurately detects common bacterial pathogens in cerebrospinal fluid, offering faster and more sensitive diagnosis for purulent meningitis than traditional methods.

Area of Science:

  • Clinical microbiology
  • Molecular diagnostics
  • Infectious disease research

Context:

  • Purulent meningitis poses a significant diagnostic challenge.
  • Rapid and accurate identification of causative agents is crucial for effective treatment.
  • Conventional culture methods can be slow and have limitations.

Purpose:

  • To develop and validate a multiplex nested PCR assay for simultaneous detection of key bacterial pathogens in cerebrospinal fluid (CSF).
  • To evaluate the assay's performance against traditional culture methods in patients with suspected meningitis.

Summary:

  • The study describes a nested PCR assay targeting 16S rDNA and SiaD genes for detecting Escherichia coli, Haemophilus influenzae, Listeria monocytogenes, Staphylococcus species, Streptococcus pneumoniae, and Neisseria meningitidis (serogroups B and C).
  • Bacterial DNA was detected in 68% of CSF samples from 25 patients, identifying specific pathogens.
  • The PCR assay demonstrated higher positivity (16% increase) compared to culture, particularly in samples analyzed after antibiotic initiation.

Impact:

  • The proposed nested PCR offers a rapid and sensitive tool for early laboratory diagnosis of bacterial meningitis.
  • This molecular approach can improve patient outcomes by enabling quicker targeted therapy.
  • The assay provides a valuable alternative or adjunct to culture-based diagnostics in clinical settings.

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