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Scott, T.G. et al.

Electron microscopy of adhesive interactions between Gardnerella vaginalis and vaginal epithelial cells, McCoy cells and human red blood cells.

Exfoliated vaginal epithelial cells with attached bacteria, termed 'clue cells', which were procured from a patient with non-specific vaginitis, were stained with ruthenium red and examined by transmission electron microscopy. The attached bacteria appeared to adhere by means of an outer fibrillar coat. An epithelial tissue culture cell line (McCoy) and human red blood cells to which strains of Gardnerella vaginalis attached were similarly examined. The adherence of G. vaginalis to the epithelial cell line appeared to be mediated by an outer fibrillar coat while adherence to red cells appeared to be mediated by fimbriae. Transmission electron microscopy was performed on the Gardnerella strains used. Thin sections of tissue-culture-adherent strains revealed a dense outer fibrillar coat whereas the surface of the haemagglutinating strains showed fine fimbriae. Negative staining of haemagglutinating strains demonstrated fimbriae on a minority of organisms.[1]

References

Electron microscopy of adhesive interactions between Gardnerella vaginalis and vaginal epithelial cells, McCoy cells and human red blood cells. Scott, T.G., Curran, B., Smyth, C.J. J. Gen. Microbiol. (1989) [Pubmed]

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