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Umeo Takahama

Department of Bioscience

Kyushu Dental College

Kitakyushu 803-8580

Japan

[email]@kyu-dent.ac.jp

Name/email consistency: high

 
 
 
 
 
 
 

Affiliation

  • Department of Bioscience, Kyushu Dental College, Kitakyushu 803-8580, Japan. 2000 - 2011

References

  1. Inhibition of buckwheat starch digestion by the formation of starch/bile salt complexes: possibility of its occurrence in the intestine. Takahama, U., Hirota, S. J. Agric. Food Chem. (2011) [Pubmed]
  2. Formation of nitric oxide, ethyl nitrite and an oxathiolone derivative of caffeic acid in a mixture of saliva and white wine. Takahama, U., Tanaka, M., Hirota, S. Free Radic. Res. (2010) [Pubmed]
  3. Nitrogen dioxide-dependent oxidation of uric acid in the human oral cavity under acidic conditions: implications for its occurrence in acidic dental plaque. Takahama, U., Hirota, S. Chem. Res. Toxicol. (2010) [Pubmed]
  4. Proanthocyanidins in buckwheat flour can reduce salivary nitrite to nitric oxide in the stomach. Takahama, U., Tanaka, M., Hirota, S. Plant. Foods. Hum. Nutr (2010) [Pubmed]
  5. Effects of pH on nitrite-induced formation of reactive nitrogen oxide species and their scavenging by phenolic antioxidants in human oral cavity. Takahama, U., Hirota, S., Kawagishi, S. Free Radic. Res. (2009) [Pubmed]
  6. Nitration of the salivary component 4-hydroxyphenylacetic acid in the human oral cavity: enhancement of nitration under acidic conditions. Takahama, U., Imamura, H., Hirota, S. Eur. J. Oral Sci. (2009) [Pubmed]
  7. Interaction between ascorbic acid and chlorogenic acid during the formation of nitric oxide in acidified saliva. Takahama, U., Tanaka, M., Hirota, S. J. Agric. Food Chem. (2008) [Pubmed]
  8. Transformation of ethyl alcohol to ethyl nitrite in acidified saliva: possibility of its occurrence in the stomach. Takahama, U., Tanaka, M., Hirota, S. Arch. Biochem. Biophys. (2008) [Pubmed]
  9. Reduction of nitrous Acid to nitric oxide by coffee melanoidins and enhancement of the reduction by thiocyanate: possibility of its occurrence in the stomach. Takahama, U., Hirota, S. J. Agric. Food Chem. (2008) [Pubmed]
  10. Chlorogenic acid in coffee can prevent the formation of dinitrogen trioxide by scavenging nitrogen dioxide generated in the human oral cavity. Takahama, U., Ryu, K., Hirota, S. J. Agric. Food Chem. (2007) [Pubmed]
  11. Dual-function of thiocyanate on nitrite-induced formation of reactive nitrogen oxide species in human oral cavity: inhibition under neutral and enhancement under acidic conditions. Takahama, U., Ryu, K., Oniki, T., Hirota, S. Free Radic. Res. (2007) [Pubmed]
  12. Reactions of thiocyanate in the mixture of nitrite and hydrogen peroxide under acidic conditions: investigation of the reactions simulating the mixture of saliva and gastric juice. Takahama, U., Tanaka, M., Oniki, T., Hirota, S. Free Radic. Res. (2007) [Pubmed]
  13. Formation of the thiocyanate conjugate of chlorogenic acid in coffee under acidic conditions in the presence of thiocyanate and nitrite: possible occurrence in the stomach. Takahama, U., Tanaka, M., Oniki, T., Hirota, S., Yamauchi, R. J. Agric. Food Chem. (2007) [Pubmed]
  14. Quercetin-dependent scavenging of reactive nitrogen species derived from nitric oxide and nitrite in the human oral cavity: interaction of quercetin with salivary redox components. Takahama, U., Hirota, S., Oniki, T. Arch. Oral Biol. (2006) [Pubmed]
  15. Production of nitric oxide-derived reactive nitrogen species in human oral cavity and their scavenging by salivary redox components. Takahama, U., Hirota, S., Oniki, T. Free Radic. Res. (2005) [Pubmed]
  16. Salivary thiocyanate/nitrite inhibits hydroxylation of 2-hydroxybenzoic acid induced by hydrogen peroxide/Fe(II) systems under acidic conditions: possibility of thiocyanate/nitrite-dependent scavenging of hydroxyl radical in the stomach. Takahama, U., Oniki, T. Biochim. Biophys. Acta (2004) [Pubmed]
  17. Oxygen uptake during the mixing of saliva with ascorbic acid under acidic conditions: possibility of its occurrence in the stomach. Takahama, U., Hirota, S., Yamamoto, A., Oniki, T. FEBS Lett. (2003) [Pubmed]
  18. Human salivary peroxidase-catalyzed oxidation of nitrite and nitration of salivary components 4-hydroxyphenylacetic acid and proteins. Takahama, U., Hirota, S., Nishioka, T., Oniki, T. Arch. Oral Biol. (2003) [Pubmed]
  19. The presence of 4-hydroxyphenylacetic acid in human saliva and the possibility of its nitration by salivary nitrite in the stomach. Takahama, U., Oniki, T., Murata, H. FEBS Lett. (2002) [Pubmed]
  20. Oxidation of quercetin by salivary components. Quercetin-dependent reduction of salivary nitrite under acidic conditions producing nitric oxide. Takahama, U., Oniki, T., Hirota, S. J. Agric. Food Chem. (2002) [Pubmed]
  21. Deglucosidation of quercetin glucosides to the aglycone and formation of antifungal agents by peroxidase-dependent oxidation of quercetin on browning of onion scales. Takahama, U., Hirota, S. Plant Cell Physiol. (2000) [Pubmed]
 
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