A Morphological Study of Interactions of Candida albicans and Streptococcus mutans.

DOI PubMed 2 Citations 14 References
  • Shinada Kayoko
    Department of Preventive Dentistry, Faculty of Dentistry, Tokyo Medical and Dental University
  • Ozaki Fumiko
    Department of Preventive Dentistry, Faculty of Dentistry, Tokyo Medical and Dental University
  • Cordeiro J. G. O.
    Department of Preventive Dentistry, Faculty of Dentistry, Tokyo Medical and Dental University
  • Okada Shogoro
    Department of Preventive Dentistry, Faculty of Dentistry, Tokyo Medical and Dental University
  • Shimoyama Kazuhiro
    Department of Geriatric Dentistry, Faculty of Dentistry, Tokyo Medical and Dental University
  • Nagao Masanori
    Department of Geriatric Dentistry, Faculty of Dentistry, Tokyo Medical and Dental University
  • Ichinose Sizuko
    Center of Electron Microscopy, Tokyo Medical and Dental University
  • Yamashita Yasuo
    First Department of Oral Anatomy, Faculty of Dentistry, Tokyo Medical and Dental University

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  • Ｃａｎｄｉｄａ　ａｌｂｉｃａｎｓとＳｔｒｅｐｔｏｃｏｃｃｕｓ　ｍｕｔａｎｓの混合培養に関する形態学的研究

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Abstract

Denture stomatitis is caused mainly by infection of Candida albicans and Streptococcus mutans, the most predominant members of the bacterial flora on denture surfaces. The purpose of this study was to investigate the adhesion in vitro of C. albicans and of S. mutans to acrylic surfaces and their interactions.<BR>Concentration of C. albicans and of S. mutans (mutational phase I and III in which activities of glucosyltranspherases are higher and lower respectively) were of high levels (≥5.0 × 107 colony-forming-units per ml; CFU/ml) . The colonies in brain-heart-infusion (BHI) broth added 5% sucrose were incubated at 37°C for 18 and 72 hours. Then the samples were dried and evaporated, and examined by S-700 and S-4100 SEM (HITACHI) .<BR>It was found that S. mutans (mutational phase I) synthesized water-insoluble glucans concomitantly with the adhesion of both S. mutans and C. albicans to the acrylic surfaces. Also, adhesion of C. albicans, mediated by cell-to-cell interactions with S. mutans (especially mutational phase III), to the surfaces was observed.

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