Hiroyuki Oiwa

Characterization of Cholyl-Adenylate in Rat Liver Microsomes by Liquid Chromatography/Electrospray Ionization–Mass Spectrometry

Shigeo Ikegawa, Hiroshi Ishikawa, Hiroyuki Oiwa et al. · Analytical Biochemistry · 1999 · 30 citations

Pharmacy, Biochemistry, Mass Spectrometric Analysis +6

Monoclonal antibodies generated against an affinity-labeled immune complex of an anti-bile acid metabolite antibody: an approach to noncompetitive hapten immunoassays based on anti-idiotype or anti-metatype antibodies

Norihiro Kobayashi, Hiroyuki Oiwa, K Kubota et al. · Journal of Immunological Methods · 2000 · 27 citations

Pharmacy, Biochemistry, Immunology +14

A monoclonal antibody-based enzyme-linked immunosorbent assay of ursodeoxycholic acid 3-sulfates in human urine

Norihiro Kobayashi, Hiroshi Katsumata, Hiroshi Katayama et al. · The Journal of Steroid Biochemistry and Molecular Biology · 2000 · 25 citations

Life Sciences, Biochemistry, Pharmaceutical Analysis +9

Production and characterization of group-specific monoclonal antibodies recognizing nonamidated, glycine- and taurine-amidated ursodeoxycholic acid 7-N-acetylglucosaminides

Norihiro Kobayashi, Hiroyuki Oiwa, Junichi Goto · The Journal of Steroid Biochemistry and Molecular Biology · 1998 · 23 citations

Pharmacy, Biochemistry, Molecular Biology +7

Idiotype–anti-idiotype-based noncompetitive enzyme-linked immunosorbent assay of ursodeoxycholic acid 7-N-acetylglucosaminides in human urine with subfemtomole range sensitivity

Norihiro Kobayashi, Kazuyuki Kubota, Hiroyuki Oiwa et al. · Journal of Immunological Methods · 2003 · 16 citations

Medicine, Immunology, Pharmacology +8