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Streptococcus pneumoniae damages the ciliated ependyma of the brain during meningitis

Robert A Hirst1, Bejal Gosai, Andrew Rutman

  • 1Department of Child Health, Robert Kilpatrick Clinical Sciences Building, University of Leicester, Leicestert Royal Infirmary, PO Box 65, Leicester LE2 7LX, U.K. rah9@le.ac.uk

Infection and Immunity
|September 23, 2003
PubMed

Insights

Streptococcus pneumoniae meningitis damages the brain's ependymal layer, leading to cell loss and impaired ciliary function. This damage exposes neurons to toxins, contributing to severe neuropathology in meningitis patients.

Area of Science:

  • Neuroscience
  • Infectious Diseases
  • Cell Biology

Background:

  • Streptococcus pneumoniae meningitis is a severe condition with poor patient outcomes.
  • The ependymal layer, a niche for adult pluripotent stem cells, is understudied in meningitis.
  • Damage to the ependyma may contribute to the neurological deficits seen in meningitis.

Purpose of the Study:

  • To investigate the impact of Streptococcus pneumoniae infection on the ependymal layer in a rat model.
  • To determine if meningitis affects ependymal cell integrity and function.

Main Methods:

  • A rat model of Streptococcus pneumoniae meningitis was established.
  • The ependymal layer was examined for structural and functional changes using microscopy.
  • Ciliary loss and beat frequency were assessed.

Main Results:

  • Localized loss of cilia on ependymal cells was observed.
  • A significant decrease in overall ependymal ciliary beat frequency occurred.
  • Damage to the ependymal ultrastructure was evident during infection.

Conclusions:

  • Streptococcus pneumoniae infection causes significant damage to the ependymal layer.
  • Loss of ependymal cells and ciliary function compromises the brain's protective barrier.
  • This ependymal damage likely contributes to the neuropathology associated with pneumococcal meningitis.

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