H Koo

Summary

Affiliation: University of Rochester
Country: USA

Publications

  1. ncbi request reprint Effect of a new variety of Apis mellifera propolis on mutans Streptococci
    H Koo
    Department of Physiological Sciences, Faculty of Dentistry of Piracicaba, State University of Campinas, Caixa Postal 52, Piracicaba, 13414 900, SP, Brazil
    Curr Microbiol 41:192-6. 2000
  2. doi request reprint Effect of starch and sucrose on dental biofilm formation and on root dentine demineralization
    C P Aires
    Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
    Caries Res 42:380-6. 2008
  3. pmc Effects of sucrose on the extracellular matrix of plaque-like biofilm formed in vivo, studied by proteomic analysis
    A F Paes Leme
    Piracicaba Dental School, UNICAMP, Piracicaba, Brazil
    Caries Res 42:435-43. 2008
  4. pmc Effect of neovestitol-vestitol containing Brazilian red propolis on accumulation of biofilm in vitro and development of dental caries in vivo
    B Bueno-Silva
    a Department of Physiologic Science, Piracicaba Dental School, University of Campinas UNICAMP, Piracicaba, Brazil
    Biofouling 29:1233-42. 2013
  5. doi request reprint Antimicrobial activity of Rheedia brasiliensis and 7-epiclusianone against Streptococcus mutans
    L S B Almeida
    Department of Physiological Sciences, Faculty of Dentistry of Piracicaba, State University of Campinas, SP, Brazil
    Phytomedicine 15:886-91. 2008
  6. doi request reprint A procedure for characterizing glucans synthesized by purified enzymes of cariogenic Streptococcus mutans
    C P Aires
    Department of Physiological Sciences, Piracicaba Dental School, UNICAMP, CP 52, CEP 13414 903, Piracicaba, SP, Brazil
    Int J Biol Macromol 46:551-4. 2010
  7. pmc The role of sucrose in cariogenic dental biofilm formation--new insight
    A F Paes Leme
    Faculty of Dentistry of Piracicaba, UNICAMP, Av Limeira 901, CEP 13414 903 Piracicaba, Sao Paulo, Brazil
    J Dent Res 85:878-87. 2006
  8. ncbi request reprint Effects of Mikania genus plants on growth and cell adherence of mutans streptococci
    R Yatsuda
    Department of Physiological Sciences, Faculty of Dentistry of Piracicaba, State University of Campinas UNICAMP, Piracicaba SP, Brazil
    J Ethnopharmacol 97:183-9. 2005
  9. ncbi request reprint Effects of Apis mellifera propolis on the activities of streptococcal glucosyltransferases in solution and adsorbed onto saliva-coated hydroxyapatite
    H Koo
    Faculty of Dentistry of Piracicaba, State University of Campinas, Piracicaba, Brazil
    Caries Res 34:418-26. 2000
  10. ncbi request reprint Effect of saccharin on antibacterial activity of chlorhexidine gel
    J A Cury
    Laboratório de Bioquímica Oral, Faculdade de Odontologia de Piracicaba, UNICAMP, Piracicaba, SP, Brasil
    Braz Dent J 11:29-34. 2000

Collaborators

Detail Information

Publications21

  1. ncbi request reprint Effect of a new variety of Apis mellifera propolis on mutans Streptococci
    H Koo
    Department of Physiological Sciences, Faculty of Dentistry of Piracicaba, State University of Campinas, Caixa Postal 52, Piracicaba, 13414 900, SP, Brazil
    Curr Microbiol 41:192-6. 2000
    ....
  2. doi request reprint Effect of starch and sucrose on dental biofilm formation and on root dentine demineralization
    C P Aires
    Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
    Caries Res 42:380-6. 2008
    ..The findings suggest that the combination of starch with sucrose may not be more cariogenic to dentine than sucrose alone...
  3. pmc Effects of sucrose on the extracellular matrix of plaque-like biofilm formed in vivo, studied by proteomic analysis
    A F Paes Leme
    Piracicaba Dental School, UNICAMP, Piracicaba, Brazil
    Caries Res 42:435-43. 2008
    ..The findings showing that sucrose affected the ECM protein composition of PLB in vivo provide further insight into the unique cariogenic properties of this dietary carbohydrate...
  4. pmc Effect of neovestitol-vestitol containing Brazilian red propolis on accumulation of biofilm in vitro and development of dental caries in vivo
    B Bueno-Silva
    a Department of Physiologic Science, Piracicaba Dental School, University of Campinas UNICAMP, Piracicaba, Brazil
    Biofouling 29:1233-42. 2013
    ..NV is a promising natural anti-biofilm agent that targets essential virulence traits in S. mutans, which are associated with the formation of cariogenic biofilm and the subsequent onset of dental caries disease. ..
  5. doi request reprint Antimicrobial activity of Rheedia brasiliensis and 7-epiclusianone against Streptococcus mutans
    L S B Almeida
    Department of Physiological Sciences, Faculty of Dentistry of Piracicaba, State University of Campinas, SP, Brazil
    Phytomedicine 15:886-91. 2008
    ..mutans biofilms; however, more studies are needed to further elucidate the mechanisms of action and the anticariogenic potential of such compound found in R. brasiliensis...
  6. doi request reprint A procedure for characterizing glucans synthesized by purified enzymes of cariogenic Streptococcus mutans
    C P Aires
    Department of Physiological Sciences, Piracicaba Dental School, UNICAMP, CP 52, CEP 13414 903, Piracicaba, SP, Brazil
    Int J Biol Macromol 46:551-4. 2010
    ..The described procedure could be important focusing future studies on in vivo biofilm...
  7. pmc The role of sucrose in cariogenic dental biofilm formation--new insight
    A F Paes Leme
    Faculty of Dentistry of Piracicaba, UNICAMP, Av Limeira 901, CEP 13414 903 Piracicaba, Sao Paulo, Brazil
    J Dent Res 85:878-87. 2006
    ..Thus, the aim of this review is to explore the broad role of sucrose in the cariogenicity of biofilms, and to present a new insight into its influence on the pathogenesis of dental caries...
  8. ncbi request reprint Effects of Mikania genus plants on growth and cell adherence of mutans streptococci
    R Yatsuda
    Department of Physiological Sciences, Faculty of Dentistry of Piracicaba, State University of Campinas UNICAMP, Piracicaba SP, Brazil
    J Ethnopharmacol 97:183-9. 2005
    ..Mikania genus plant is a promising source for novel antimicrobial agents against oral pathogens...
  9. ncbi request reprint Effects of Apis mellifera propolis on the activities of streptococcal glucosyltransferases in solution and adsorbed onto saliva-coated hydroxyapatite
    H Koo
    Faculty of Dentistry of Piracicaba, State University of Campinas, Piracicaba, Brazil
    Caries Res 34:418-26. 2000
    ..There is a need to identify the active compounds of propolis...
  10. ncbi request reprint Effect of saccharin on antibacterial activity of chlorhexidine gel
    J A Cury
    Laboratório de Bioquímica Oral, Faculdade de Odontologia de Piracicaba, UNICAMP, Piracicaba, SP, Brasil
    Braz Dent J 11:29-34. 2000
    ..These in vitro results suggest that saccharin may inhibit the efficacy of chlorhexidine against mutans streptococci, depending on the concentration...
  11. ncbi request reprint Effect of sucrose concentration on dental biofilm formed in situ and on enamel demineralization
    C P Aires
    Faculty of Dentistry of Piracicaba, UNICAMP, Piracicaba, Brazil
    Caries Res 40:28-32. 2006
    ..The findings suggest that the threshold of sucrose solution concentration for the formation of a cariogenic biofilm is 5%, which provided the same cariogenic potential as that observed for 10 and 20% sucrose solution...
  12. ncbi request reprint Some chemical composition and biological activity of northern Argentine propolis
    Maria I Isla
    Department of Food Science, College of Food Engineering, State University of Campinas, P O Box 6177, 13083 970, Campinas, Sao Paulo, Brazil
    J Agric Food Chem 53:1166-72. 2005
    ....
  13. ncbi request reprint Effects of fluoride and aluminum from ionomeric materials on S. mutans biofilm
    M F Hayacibara
    Faculty of Dentistry of Piracicaba, UNICAMP, Av Limeira, 901, CEP 13414 903, Piracicaba, Sao Paulo, Brazil
    J Dent Res 82:267-71. 2003
    ..mutans biofilms. It also significantly affected both biofilm formation and composition. Thus, this study suggests that aluminum released by ionomeric materials may enhance the biological effects of fluoride...
  14. ncbi request reprint Influence of cranberry phenolics on glucan synthesis by glucosyltransferases and Streptococcus mutans acidogenicity
    S Gregoire
    Department of Dentistry, University of Rochester Medical Center, Rochester, NY 14620, USA
    J Appl Microbiol 103:1960-8. 2007
    ..To investigate the influence of several phenolic compounds isolated from cranberry fruit (Vaccinium macrocarpon) on some of the virulence properties of Streptococcus mutans associated with glucan synthesis and acidogenicity...
  15. ncbi request reprint Effects of apigenin and tt-farnesol on glucosyltransferase activity, biofilm viability and caries development in rats
    H Koo
    Center for Oral Biology and Eastman Department of Dentistry, University of Rochester Medical Center, NY 14642, USA
    Oral Microbiol Immunol 17:337-43. 2002
    ..The incidence of smooth-surface caries was significantly reduced by apigenin +tt-farnesol (60%), fluoride (70%), and chlorhexidine (72%) treatments compared to control (P < 0.05)...
  16. doi request reprint Influences of starch and sucrose on Streptococcus mutans biofilms
    S Duarte
    Eastman Department of Dentistry and Center for Oral Biology, University of Rochester Medical Center, Rochester, NY 14620, USA
    Oral Microbiol Immunol 23:206-12. 2008
    ..The aim of this study was to examine the influence of starch and sucrose, alone or in combinations, on formation, polysaccharide composition, gene expression, and acidogenicity of Streptococcus mutans biofilms...
  17. ncbi request reprint Strategies to enhance the biological effects of fluoride on dental biofilms
    H Koo
    Eastman Department of Dentistry and Center for Oral Biology, University of Rochester Medical Center, Rochester, NY 14620, USA
    Adv Dent Res 20:17-21. 2008
  18. pmc Apigenin and tt-farnesol with fluoride effects on S. mutans biofilms and dental caries
    H Koo
    Center for Oral Biology and Eastman Dept of Dentistry, University of Rochester Medical Center, 625 Elmwood Avenue, Box 683, Rochester, NY 14620, USA
    J Dent Res 84:1016-20. 2005
    ..Results from these studies showed that apigenin and tt-farnesol may enhance the cariostatic effectiveness of fluoride...
  19. ncbi request reprint Interactions of Streptococcus mutans glucosyltransferase B with lysozyme in solution and on the surface of hydroxyapatite
    H S Kho
    University of Rochester, Center for Oral Biology, Rochester, New York, N Y, USA
    Caries Res 39:411-6. 2005
    ..Therefore, the interaction of lysozyme and GtfB enzymes on HA surface may modulate the formation of glucan and dental plaque...
  20. ncbi request reprint Inhibition of Streptococcus mutans biofilm accumulation and polysaccharide production by apigenin and tt-farnesol
    H Koo
    Eastman Department of Dentistry, University of Rochester Medical Center, Rochester, NY 14642, USA
    J Antimicrob Chemother 52:782-9. 2003
    ..We investigated the influence of apigenin and tt-farnesol, alone and in combination, on the accumulation, polysaccharide composition and viability of S. mutans UA159 biofilms...
  21. ncbi request reprint Influence of cranberry juice on glucan-mediated processes involved in Streptococcus mutans biofilm development
    H Koo
    Center for Oral Biology and Eastman Department of Dentistry, 601 Elmwood Avenue, Box 611, University of Rochester Medical Center, Rochester, NY 14642, USA
    Caries Res 40:20-7. 2006
    ..05). Our data show that cranberry juice inhibited glucan-mediated biofilm development and acid production, and holds promise as a natural product to prevent biofilm-related oral diseases...