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[Molecular and biological mechanisms of the meningococcal carrier state]

N N Kostiukova1

  • 1Gamaleya Research Institute of Epidemiology and Microbiology, Moscow, Russia.

Zhurnal Mikrobiologii, Epidemiologii I Immunobiologii
|April 26, 2003
PubMed

Insights

This review details how meningococci colonize the human nasopharynx, focusing on bacterial adhesion, cell signaling, and iron uptake. Understanding these molecular mechanisms is key to preventing meningococcal carrier states.

Area of Science:

  • Molecular biology
  • Microbiology
  • Immunology

Background:

  • The nasopharynx is a primary colonization site for Neisseria meningitidis.
  • Meningococcal carrier state facilitates pathogen transmission.
  • Understanding molecular interactions is crucial for developing prevention strategies.

Purpose of the Study:

  • To review the latest molecular biological findings on meningococcal carrier state formation.
  • To elucidate the mechanisms of meningococcal colonization of the human nasopharynx.
  • To analyze aspects of meningococcal carrier state prophylaxis.

Main Methods:

  • Review of molecular biology investigations.
  • Analysis of bacterial adhesion mechanisms (fimbrial and nonfimbrial adhesins).
  • Examination of host-pathogen signaling and bacterial structural changes.

Main Results:

  • Meningococci adhere to epithelial cells via adhesins, involving signal transmission and phase variation.
  • Meningococci can penetrate epithelial cells, with their intracellular fate discussed.
  • Biomolecular mechanisms of iron uptake by meningococci during colonization are detailed.

Conclusions:

  • Molecular interactions, including adhesion and iron acquisition, are critical for meningococcal nasopharyngeal colonization.
  • Insights into these processes are vital for developing effective prophylaxis against meningococcal carriage.

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