Ryosei Sakai

Kanagawa, 2450066, Japan

Last Updated: 09/26/2026

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Found 16 publications

Position-specific isotope fragmentation differential quantification (PIF-DQ) of phenylalanine positional isotopomers: A rapid UPLC-MS/MS approach for urine analysis in the IAAO method.

Position-specific isotope fragmentation differential quantification (PIF-DQ) of phenylalanine positional isotopomers: A rapid UPLC-MS/MS approach for urine analysis in the IAAO method.

Journal: Journal of chromatography. A
Published: June 08, 2026

Safety assessment of L-ornithine oral intake in healthy subjects: a systematic review.

Safety assessment of L-ornithine oral intake in healthy subjects: a systematic review.

Journal: Amino acids
Published: February 28, 2025

Glutamate metabolism in a human intestinal epithelial cell layer model.

Glutamate metabolism in a human intestinal epithelial cell layer model.

Journal: Amino acids
Published: April 27, 2020

Dispensable Amino Acids, except Glutamine and Proline, Are Ideal Nitrogen Sources for Protein Synthesis in the Presence of Adequate Indispensable Amino Acids in Adult Men.

Dispensable Amino Acids, except Glutamine and Proline, Are Ideal Nitrogen Sources for Protein Synthesis in the Presence of Adequate Indispensable Amino Acids in Adult Men.

Journal: The Journal of nutrition
Published: February 18, 2020

In vitro and in vivo genotoxicity studies on monosodium L-glutamate monohydrate.

In vitro and in vivo genotoxicity studies on monosodium L-glutamate monohydrate.

Journal: Regulatory toxicology and pharmacology : RTP
Published: March 01, 2019

Gastric Emptying of Elemental Liquid Diets Versus Semisolid Diets in Bedridden Gastrostomy-fed Patients.

Gastric Emptying of Elemental Liquid Diets Versus Semisolid Diets in Bedridden Gastrostomy-fed Patients.

Journal: Journal of clinical gastroenterology
Published: March 24, 2018

Thirteen week toxicity study of dietary l-tryptophan in rats with a recovery period of 5 weeks.

Thirteen week toxicity study of dietary l-tryptophan in rats with a recovery period of 5 weeks.

Journal: Journal of applied toxicology : JAT
Published: August 17, 2017

Comparisons of l-cysteine and d-cysteine toxicity in 4-week repeated-dose toxicity studies of rats receiving daily oral administration.

Comparisons of l-cysteine and d-cysteine toxicity in 4-week repeated-dose toxicity studies of rats receiving daily oral administration.

Journal: Journal of toxicologic pathology
Published: January 06, 2017

The Nitrogen Moieties of Dietary Nonessential Amino Acids Are Distinctively Metabolized in the Gut and Distributed to the Circulation in Rats.

The Nitrogen Moieties of Dietary Nonessential Amino Acids Are Distinctively Metabolized in the Gut and Distributed to the Circulation in Rats.

Journal: The Journal of nutrition
Published: September 22, 2016

A 4-week toxicity study of methionine in male rats.

A 4-week toxicity study of methionine in male rats.

Journal: International journal of toxicology
Published: May 06, 2015

Measurement of (15)N enrichment of glutamine and urea cycle amino acids derivatized with 6-aminoquinolyl-N-hydroxysuccinimidyl carbamate using liquid chromatography-tandem quadrupole mass spectrometry.

Measurement of (15)N enrichment of glutamine and urea cycle amino acids derivatized with 6-aminoquinolyl-N-hydroxysuccinimidyl carbamate using liquid chromatography-tandem quadrupole mass spectrometry.

Journal: Analytical biochemistry
Published: September 28, 2014

Bolus ingestion of individual branched-chain amino acids alters plasma amino acid profiles in young healthy men.

Bolus ingestion of individual branched-chain amino acids alters plasma amino acid profiles in young healthy men.

Journal: SpringerPlus
Published: October 15, 2013
Showing 1-12 of 16

Last Updated: 09/26/2026