Selenosugars are key and urinary metabolites for selenium excretion within the required to low-toxic range

Yayoi Kobayashi, Yasumitsu Ogra, Kazuya Ishiwata, +3

Proceedings of the National Academy of Sciences

Identification of a novel selenium metabolite, Se-methyl-N-acetylselenohexosamine, in rat urine by high-performance liquid chromatography–inductively coupled plasma mass spectrometry and –electrospray ionization tandem mass spectrometry

Yasumitsu Ogra, Kazuya Ishiwata, Hiromitsu Takayama, +2

Journal of Chromatography B

BiochemistrySelenium DeficiencyMedicineNatural SciencesBioanalysis +10

Speciation of selenium in selenium-enriched shiitake mushroom, Lentinula edodes

Yasumitsu Ogra, Kazuya Ishiwata, Jorge Ruíz Encinar, +2

Analytical and Bioanalytical Chemistry

Lentinula EdodesSelenium Deficiency

Identification of selenohomolanthionine in selenium-enriched Japanese pungent radish

Yasumitsu Ogra, Takashi Kitaguchi, Kazuya Ishiwata, +3

Journal of Analytical Atomic Spectrometry

Simultaneous speciation of selenium and sulfur species in selenized odorless garlic (Allium sativum L. Shiro) and shallot (Allium ascalonicum) by HPLC–inductively coupled plasma-(octopole reaction system)-mass spectrometry and electrospray ionization-tandem mass spectrometry

Yasumitsu Ogra, Kazuya Ishiwata, Yuji Iwashita, +1

Journal of Chromatography A

Food ChemistrySimultaneous SpeciationAgricultural ChemistryBiochemistryNatural Sciences +6

Effects of deuterium in octopole reaction and collision cell ICP-MS on detection of selenium in extracellular fluids

Yasumitsu Ogra, Kazuya Ishiwata, Kazuo Suzuki

Analytica Chimica Acta

BiochemistrySelenium DeficiencyNatural SciencesMass SpectrometryOctopole Reaction +6

Speciation and identification of low molecular weight selenium compounds in the liver of sea turtles

Yasumi Anan, Kazuya Ishiwata, Noriyuki Suzuki, +2

Journal of Analytical Atomic Spectrometry

EngineeringComparative ToxicologyEnvironmental ChemistryMarine PollutionToxicology +15

Comparison of distribution and metabolism between tellurium and selenium in rats

Yasumitsu Ogra, Reina Kobayashi, Kazuya Ishiwata, +1

Journal of Inorganic Biochemistry

Selenium DeficiencyMedicinePhysiologyToxicologyMetabolism +3

Incorporation of selenium into selenoprotein P and extracellular glutathione peroxidase: HPLC-ICPMS data with enriched selenite

Kazuo Suzuki, Kazuya Ishiwata, Yasumitsu Ogra

The Analyst

Extracellular Glutathione PeroxidaseLipid PeroxidationRedox BiologyOxidative StressHplc-icpms Data +18

Identification of urinary tellurium metabolite in rats administered sodium tellurite

Yasumitsu Ogra, Reina Kobayashi, Kazuya Ishiwata, +1

Journal of Analytical Atomic Spectrometry

Toxicological MechanismCation Exchange ColumnsBioanalysisAnalytical ChemistryToxicology +19