Gardnerella vaginalis comprises three distinct genotypes of which only two produce sialidase

Autor: Pieter Deschaght, T.N. Kiama, Marleen Temmerman, Kimberly K. Jefferson, Hans Verstraelen, Nabil Abdullah El Aila, Mario Vaneechoutte, Guido Lopes dos Santos Santiago
Rok vydání: 2011
Předmět:
Zdroj: American Journal of Obstetrics and Gynecology. 204:450.e1-450.e7
ISSN: 0002-9378
DOI: 10.1016/j.ajog.2010.12.061
Popis: Objective Sialidase and the presence of Gardnerella vaginalis have been proposed as biomarkers for bacterial vaginosis. Sialidase has been associated with adverse pregnancy outcome. We genotyped G vaginalis isolates, assessed the presence and diversity of sialidase-encoding genes, and determined the production of sialidase. Study Design One hundred thirty-four G vaginalis isolates were genotyped by random amplified polymorphic deoxyribonucleic acid (RAPD) and a selection of 29 isolates with amplified ribosomal deoxyribonucleic acid restriction analysis (ARDRA). A G vaginalis sialidase quantitative polymerase chain reaction was developed, and the sialidase production was assessed with the filter spot test. Results Three G vaginalis genotypes could be distinguished by both RAPD and ARDRA. Only 2 genotypes encoded and produced sialidase. Conclusion Three genotypes exist among G vaginalis isolates, and there is a clear link between genotype and sialidase production. A possible link between sialidase production and (symptomatic) bacterial vaginosis and biofilm production can be hypothesized.
Databáze: OpenAIRE