Eikenella corrodens adherence to human buccal epithelial cells.

AUTOR(ES)

Yamazaki, Y

RESUMO

The mechanism of Eikenella corrodens adherence to human buccal epithelial cells in vitro was studied. Initial experiments to determine the optimal conditions for adherence of E. corrodens to buccal epithelial cells showed that adherence was dependent on time, temperature, bacterial concentration, and pH. Different strains of E. corrodens varied in their ability to adhere, and strain 1073 showed the greatest ability in adherence. Strain 1073 was selected for studies of adherence mechanisms. Trypsin treatment or heating (100 degrees C, 10 min) of the bacterial cells abolished their capacity to adhere to buccal epithelial cells. Treatment of buccal epithelial cells with trypsin also abolished adherence of E. corrodens 1073, whereas neuraminidase treatment of buccal epithelial cells enhanced the adherence. The adherence was inhibited by ethylenediaminetetraacetic acid and restored by adding Ca2+. The adherence was remarkably inhibited by sugars containing D-galactose and n-acetyl-D-galactosamine. Treatment of neuraminidase-treated epithelial cells with sodium metaperiodate or alpha- and beta-galactosidase did not decrease the adherence. These data suggest that adherence of E. corrodens 1073 to human buccal epithelial cells may require the interaction of lectin-like proteins on the bacterial surface with galactose-like receptors on the surface of epithelial cells.

Documentos Relacionados

• Adherence of Candida albicans to human buccal epithelial cells.
• Adherence of Haemophilus influenzae to buccal epithelial cells.
• Fimbria-mediated adherence of Candida albicans to glycosphingolipid receptors on human buccal epithelial cells.
• Relationship between germination of Candida albicans and increased adherence to human buccal epithelial cells.
• Role of capsule in adherence of Haemophilus influenzae type b to human buccal epithelial cells.