title: In vitro anticariogenic effects of Drymocallis rupestris extracts and their quality evaluation by HPLC-DAD-MS³ analysis.
abstract: In this study, for the first time, we investigated in vitro inhibitory effects of Drymocallis rupestris extracts and their subfractions obtained with solvents of different polarity (aqueous, 50% ethanolic, diethyl ether, ethyl acetate and n-butanolic) against bacterial viability and caries virulence factors of Streptococcus spp. strains. The diethyl ether subfraction (PRU2) showed bacteriostatic and bactericidal activity against mutans streptococci, with minimum inhibitory concentrations (MICs) in the range of 0.75-1.5 mg/mL and minimum bactericidal concentrations (MBCs) in the range of 1.5-3 mg/mL. Furthermore, PRU2 inhibited biofilm formation by Streptococci in a dose-dependent manner. It was also found that all five D. rupestris preparations exhibited diverse inhibitory effects on de novo synthesis of water-insoluble and water-soluble α-D-glucans by glucosyltransferases of the mutans group streptococci. The phytochemical profile of investigated samples was determined by spectrophotometric and chromatographic (HPLC-DAD-MS³) methods. The high polyphenol (total phenol, phenolic acids, tannins, proantocyanidins, and flavonoids) contents were found which correlated with anticariogenic activity of the analyzed samples. The results demonstrate that D. rupestris extracts and their subfractions could become useful supplements for pharmaceutical products as a new anticariogenic agent in a wide range of oral care products. Further studies are necessary to clarify which phytoconstituents of D. rupestris are responsible for anticaries properties.
authors.affiliation: Department of Pharmacognosy, Faculty of Pharmacy, Medical University of Białystok, ul. Mickiewicza 2a, 15-230 Białystok, Poland. tomczyk@umb.edu.pl
authors.forename: Michał
authors.initials: M
authors.lastname: Tomczyk
authors.forename: Małgorzata
authors.initials: M
authors.lastname: Pleszczyńska
authors.forename: Adrian
authors.initials: A
authors.lastname: Wiater
authors.forename: Sebastian
authors.initials: S
authors.lastname: Granica
mesh_terms: D001422:Bacterial Adhesion / Q000187:drug effects; D018441:Biofilms / Q000187:drug effects; D002326:Cariogenic Agents / Q000737:chemistry / Q000494:pharmacology*; D002851:Chromatography, High Pressure Liquid; D003731:Dental Caries / Q000188:drug therapy / Q000382:microbiology*; D006801:Humans; D066298:In Vitro Techniques; D013058:Mass Spectrometry; D008826:Microbial Sensitivity Tests; D050296:Microbial Viability / Q000187:drug effects*; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology*; D059808:Polyphenols / Q000737:chemistry; D027824:Rosaceae / Q000737:chemistry*; D013291:Streptococcus / Q000187:drug effects / Q000472:pathogenicity; D013634:Tannins / Q000737:chemistry
chemical_list: D002326:Cariogenic Agents; D010936:Plant Extracts; D059808:Polyphenols; D013634:Tannins
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