Characteristic differences between saliva-dependent aggregation and adhesion of streptococci

B. Rosan, D. Malamud, B. Appelbaum, E. Golub

    Research output: Contribution to journalArticlepeer-review


    Comparison of saliva-mediated aggregation of Streptococcus sanguis, Streptococcus mitis, and Streptococcus mutans and adhesion of these organisms to saliva-coated hydroxyapatite showed that there was no relationship between these two activities. Adsorption of salivary aggregating activity to bacteria appears to have little effect on the ability of the residual saliva to support adherence; conversely, adsorption of salivary adherence factors to hydroxyapatite does not affect aggregation. Although heating saliva significantly reduces bacterial aggregation, it has little or no effect on adherence. A comparison of aggregation and adhesion with serial dilutions of saliva demonstrated that adhesion could still be detected at 100 to 500-fold-lower concentrations of salivary protein than bacterial aggregation. These findings support the concept that aggregation and adherence involve two distinct mechanisms of microbial clearance in the oral cavity.

    Original languageEnglish (US)
    Pages (from-to)86-90
    Number of pages5
    JournalInfection and Immunity
    Issue number1
    StatePublished - 1982

    ASJC Scopus subject areas

    • Parasitology
    • Microbiology
    • Immunology
    • Infectious Diseases


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