Interference of Salivary immunoglobulin A antibodies and other salivary fractions with adherence of Streptococcus mutans to hydroxyapatite.
The adherence of Streptococcus mutans to hydroxyapatite was studied in the presence of salivary fractions with varying activity of naturally occurring immunoglobulin A (IgA) antibodies. Human parotid saliva from different donors was fractionated by chromatography and compared. Salivary IgA antibodies had no decisive effect on the adherence of the S. mutans strain used. High-molecular-weight salivary components from some subjects had an adherence-promoting effect, whereas fractions collected after the void volume of a Sepharose 2B column always inhibited adherence. The data indicate that the influence of unfractionated saliva on adherence is dependent on the net effect of adherence-promoting and adherence-inhibiting components. This principle has to be considered when the effect of human saliva on microbial adherence is studied.
D000268:Adhesiveness; D000888:Antibodies, Anti-Idiotypic / Q000502:physiology*; D001667:Binding, Competitive; D002850:Chromatography, Gel; D017886:Durapatite; D005260:Female; D006801:Humans; D006882:Hydroxyapatites / Q000378:metabolism; D007070:Immunoglobulin A / Q000378:metabolism*; D008297:Male; D012463:Saliva / Q000276:immunology*; D013295:Streptococcus mutans / Q000276:immunology*
D000888:Antibodies, Anti-Idiotypic; D006882:Hydroxyapatites; D007070:Immunoglobulin A; D017886:Durapatite