Electrophoresis of periodontal pathogens in poly(ethyleneoxide) solutions with uncoated capillary

Periodontitis is a prevalent inflammatory disease caused by different species of anaerobic bacteria such as Porphyromonas gingivalis (P.g), Treponema denticola (T.d), and Tannerella forsythia (T.f). We compared the separation result of DNA ladders in hydroxyethyl cellulose, poly(ethyleneoxide) (PEO), and polyethylene glycol and analyzed the effect of polymer concentration, electric field, and temperature of the background electrolyte on the separation performance. Results demonstrated that there was a linear relationship (R=0.942) for 100 to 700bp of DNA and its migration time. Finally, the polymerase chain reaction products of P.g, T.d, and T.f were successfully identified within 8.5min in 0.5% PEO with uncoated capillary.