Toshimitsu Niwa

Inhibitory Effect of Oral Sorbent on Accumulation of Albumin-Bound Indoxyl Sulfate in Serum of Experimental Uremic Rats

Toshimitsu Niwa, Tomoko Yazawa, Michihito Ise et al. · ˜The œNephron journals/Nephron journals · 1991 · 75 citations

Experimental Uremic Rats, Urology, Indoxyl Sulfate +15

Elevated Serum Levels of 3-Deoxyglucosone, a Potent Protein-Cross-Linking Intermediate of the Maillard Reaction, in Uremic Patients

Toshimitsu Niwa, Naohito Takeda, Takashi Miyazaki et al. · ˜The œNephron journals/Nephron journals · 1995 · 52 citations

Healthy Subjects, Glycobiology, Maillard Reaction +16

Analysis of polyols in uremic serum by liquid chromatography combined with atmospheric pressure chemical ionization mass spectrometry

Toshimitsu Niwa, Kazuhiko Tohyama, Y. Kato · Journal of Chromatography B Biomedical Sciences and Applications · 1993 · 44 citations

Urology, Gas Chromatography, Medicine +12

Endogenous synthesis of N-methylsalsolinol, an analogue of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine, in rat brain during in vivo microdialysis with salsolinol, as demonstrated by gas chromatography—mass spectrometry

Toshimitsu Niwa, Wakako Maruyama, Daiichiro Nakahara et al. · Journal of Chromatography B Biomedical Sciences and Applications · 1992 · 30 citations

Pharmacological Study, Biochemistry, Medicine +9

Endogenous synthesis of N-methyl-1,2,3,4-tetrahydroisoquinoline, a precursor of N-methylisoquinolinium ion, in the brains of primates with parkinsonism after systemic administration of 1,2,3,4-tetrahydroisoquinoline

Toshimitsu Niwa, Hideo Yoshizumi, Akira Tatematsu et al. · Journal of Chromatography B Biomedical Sciences and Applications · 1990 · 29 citations

Medicinal Chemistry, Medicine, Systemic Administration +9