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Related Experiment Videos

Oral colonization by Candida albicans.

R D Cannon1, W L Chaffin

  • 1Department of Oral Sciences and Orthodontics, Faculty of Dentistry, University of Otago, Dunedin, New Zealand.

Critical Reviews in Oral Biology and Medicine : an Official Publication of the American Association of Oral Biologists
|April 12, 2000
PubMed
Summary

Candida albicans adheres to oral surfaces using various mechanisms, including interactions with saliva and host tissues. Understanding these adherence strategies is key to preventing oral colonization by this common yeast.

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Area of Science:

  • Microbiology
  • Oral Biology
  • Mycology

Background:

  • Candida albicans is a common commensal yeast in the human oral flora.
  • Oral colonization requires C. albicans to adhere and replicate against host clearance mechanisms.
  • The oral cavity offers diverse niches and ligands for C. albicans adherence.

Purpose of the Study:

  • To investigate the adherence mechanisms of Candida albicans in the oral cavity.
  • To identify the ligands and interactions facilitating C. albicans colonization.
  • To explore strategies for preventing oral colonization and infection.

Main Methods:

  • Characterization of C. albicans cell wall adhesins.
  • Analysis of adherence interactions (lectin, protein-protein, hydrophobic).

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  • Investigation of C. albicans response to new adherence receptors during tissue invasion.

    • Main Results:

    • C. albicans adheres to numerous oral ligands, including epithelial cells, bacterial molecules, ECM proteins, and dental acrylic.
    • Saliva molecules, such as proline-rich proteins, enhance C. albicans adherence.
    • Adherence involves a complex interplay of lectin, protein-protein, and hydrophobic interactions.
    • C. albicans expresses alternative adhesins in response to new receptors encountered during tissue penetration.

    Conclusions:

    • The complex adherence mechanisms and diverse oral niches of C. albicans present challenges for preventing colonization.
    • Further research into the contribution of each adherence mechanism is needed to develop effective prevention strategies.
    • Targeting specific adherence factors could offer a route to controlling C. albicans oral infections.