[Comparative study on the ability of adhesion and invasion of different fimA genetypes of Porphyromonas gingivalis to oral epithelial cells].

OBJECTIVE

To compare the ability of adhesion and invasion to epithelial cells by Porphyromonas gingivalis (Pg) strains with different fimA separated from Chinese.

METHODS

Cultured method and antibiotic protection method were used to determine the adhesive and invasive ability of Pg with different fimA genetypes. The adhesion was observed by scanning electron microscope.

RESULTS

All the strains adhered and invaded to KB cells, and the adhesion rate ranged from 0.523% to 37.125% and invasive rate from 0.017% to 3.750%.The adhesive and invasive ability among different fimA genotypes showed no significant difference (P > 0.05).

CONCLUSIONS

There is no significant correlation between fimA genotype and ability in adhesion and invasion to KB cells.