biosurfactant inhibits biofilm formation and gene expression of caries-inducing .

Background: It is cleared that some probiotic strains inhibit biofilm formation of oral bacteria, but its mechanisms are not clearly understood yet. It is proposed that one of the mechanisms can be biosurfactant production, a structurally diverse group of surface-active compounds synthesized by microorganisms. Hence, this study focused on the evaluation of the anti-biofilm and antiadhesive activities of the derived-biosurfactant against and its effect on and genes expression level.

The effect of a probiotic strain (Lactobacillus acidophilus) on the plaque formation of oral Streptococci.

The objective of this study was to investigate the ability of biofilm formation among mutans and non mutans oral streptococci and to determine the effect of Lactobacillus acidophilus DSM 20079 as a probiotic strain on the adhesion of selected streptococcal strains on the surfaces. The sample comprised 40 isolates of oral streptococci from dental plaque and caries of volunteer persons. Streptococcus mutans ATCC35668 (no24) was as an standard strain.

Lactobacillus Acidophilus-Derived Biosurfactant Effect on GTFB and GTFC Expression Level in Streptococcus Mutans Biofilm Cells.

Streptococcus mutans (S. mutans), harboring biofilm formation, considered as a main aetiological factor of dental caries. Gtf genes play an important role in S.

Assessment of bile salt effects on s-layer production, slp gene expression and some physicochemical properties of Lactobacillus acidophilus ATCC 4356.

In many conditions, bacterial surface properties are changed as a result of variation in growth medium and conditions. This study examined the influence of bile salt concentrations (0-0.1%) on colony morphotype, hydrophobicity, H2O2 concentration, S-layer protein production and slpA gene expression in Lactobacillus acidophilus ATCC 4356.