Calcium Modulates Interactions between Bacteria and Hydroxyapatite

Bacterial adhesion onto hydroxyapatite is known to depend on the surface properties of both the biomaterial and the bacterial strain, but less is known about the influence of the composition of the aqueous medium. Here, the adhesion of Streptococcus mutans and 3 different Lactobacilli on powdered hy...

Full description

Saved in:
Bibliographic Details
Published in:Journal of dental research 2006-12, Vol.85 (12), p.1124-1128
Main Authors: Venegas, S.C., Palacios, J.M., Apella, M.C., Morando, P.J., Blesa, M.A.
Format: Article
Language:English
Subjects:
Adsorption
Bacterial Adhesion - drug effects
Biocompatible Materials - chemistry
Calcium - chemistry
Calcium - pharmacology
Dentistry
Durapatite - chemistry
Electrophoresis
Humans
Hydrogen-Ion Concentration
Hydrophobic and Hydrophilic Interactions
Lactobacillus - classification
Lactobacillus - drug effects
Lactobacillus casei
Lactobacillus casei - drug effects
Lactobacillus fermentum
Lactobacillus fermentum - drug effects
Powders
Saliva - physiology
Streptococcus mutans
Streptococcus mutans - drug effects
Surface Properties
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Bacterial adhesion onto hydroxyapatite is known to depend on the surface properties of both the biomaterial and the bacterial strain, but less is known about the influence of the composition of the aqueous medium. Here, the adhesion of Streptococcus mutans and 3 different Lactobacilli on powdered hydroxyapatite was shown to change with Ca2+ concentration. The effect depends on the surface properties of each strain. Adhesion of Lactobacillus fermentum and salivarius (and of Streptococcus mutans at low Ca2+) was enhanced with increasing Ca2+ concentration. Lactobacillus casei was efficiently removed by adhesion on hydroxyapatite, even without Ca2+ addition, and the effect of this ion was only marginal. The results are interpreted in terms of Ca2+-mediated adhesion, and relative to the hydrophobic properties of each strain and the electrical properties of the bacterial and solid surfaces (electrophoretic mobility).
ISSN:0022-0345
1544-0591
DOI:10.1177/154405910608501211