Role of surface fimbriae (fibrils) in the adsorption of Actinomyces species to saliva-treated hydroxyapatite surfaces.

Infection and Immunity
W B ClarkB J Mansheim

Abstract

We studied the adsorption, morphological, and serological characteristics of selected Actinomyces and related species. Evaluation of uranyl acetate-stained cells by electron microscopy revealed wide variations among strains in the frequency of surface fimbriae. These variations did not always correlate with the percent adsorption to saliva-treated hydroxyapatite of the various Actinomyces strains. However, two strains of Rothia dentocariosa possessing no surface fimbriae and five strains of A. israelii possessing very few surface fimbriae exhibited feeble adsorption to saliva-treated hydroxyapatite. Although the calculated number of adsorption sites on saliva-treated hydroxypatite did not vary widely among the strains tested, significant differences were observed in the affinities calculated for some species or serotypes. The mean affinities for strains of A. viscosus serotype 2 and A. naeslundii serotype 3 were similar, and these strains adsorbed well to saliva-treated hydroxyapatite. The mean adsorption and affinity for the A. naeslundii strain serotype 1 and all strains of A. israelii tested were significantly less than those determined for the A. viscosus serotype 2 or A. naeslundii serotype 3 strains. Adsorption inhibition...Continue Reading

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Citations

Jan 1, 1989·Critical Reviews in Microbiology·P E Kolenbrander
Sep 1, 1986·Journal of Dental Research·W B ClarkJ O Cisar
May 3, 2011·Journal of Bacteriology·Chenggang WuHung Ton-That
Jan 1, 1991·Critical Reviews in Oral Biology and Medicine : an Official Publication of the American Association of Oral Biologists·S C Holt, T E Bramanti
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Jan 1, 1985·Infection and Immunity·M J HeebO Gabriel
Aug 1, 1983·Journal of Bacteriology·V M ReuschD S Haberkorn

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Actinomycosis

Actinomycosis is a rare, chronic, and slowly progressive granulomatous disease caused by filamentous Gram positive anaerobic bacteria from the Actinomycetaceae family (genus Actinomyces). The disease is characterised by the formation of painful abscesses in the mouth, lungs,breast or gastrointestinal tract. Discover the latest research on actinomycosis here.