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[Gardnerella vaginalis biotypes: modification of a proposed system]
A G Pedraza-Avilés1, A E Inzunza-Montiel, M C Ortíz-Zaragoza
1Laboratorio de Bacteriología, Centro de Salud Dr. José Castro Villagrana, Facultad de Medicina, UNAM,. Tlalpan, México, D.F., Mexico.
Abstract:
A modified scheme is proposed for biotyping Gardnerella vaginalis based on detection of hippurate hydrolysis, beta-galactosidase (ONPG) and lipase, and fermentation of arabinose, galactose and xylose. Thirty three biotypes were found among 140 strains from women with and without bacterial vaginosis (non-specific vaginitis). The distribution of biotypes were found to be significantly different, being more predominant the biotypes 1A; 5G; 7A; 7D and 7G in women with vaginosis and the biotypes 5G and 6H in women without vaginosis. These data suggest that some biotypes of Gardnerella vaginalis are associated with bacterial vaginosis.