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Updated: Jun 20, 2026

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Isolation of Atrial Myocytes from Adult Mice
Published on: July 25, 2019
フリー・トリプトファンは,人間の尿の含有量です
まとめ
この研究では,微生物学的測定法を使用して,正常な男性における1トリプトファン1日分泌量を測定しました. 結果は,前回の報告と比較して,排出量 (12〜30 mg/日) が著しく低下したことを示した.
科学分野:
- バイオケミストリー バイオケミストリー
- 人間の生理学 人間生理学
- 微生物学 微生物学とは
背景:
- トリプトファンは,タンパク質合成と神経伝達物質の生産に不可欠な必須アミノ酸です.
- トリプトファン分泌の正確な測定は,代謝経路を理解し,関連する障害を診断するために不可欠です.
- 以前の研究では,1-トリプトファンの1日分泌値がより高いことが報告されていた.
研究 の 目的:
- 正常な成人男性における1トリプトファンの毎日の尿排泄量を測定する.
- これらの発見を,以前に公表されたデータと比較する.
- トリプトファン定量化のための微生物学的方法を検証する.
主な方法:
- 試験生物として Lactobacillus arabinosus を利用した微生物学的測定法が採用されました.
- 9人の健康な成人の男性から採取した尿サンプルを1トリプトファン含有量について分析した.
- この方法は,様々な濃度での精度と回復について検証されました.
主要な成果:
- 1トリプトファン1日分泌量は,1日12~30mgであった.
- これは,以前に報告された1日当たり281mgの平均値より大幅に低い.
- 潜在的代謝産物であるインドールが,尿で軽微な量で検出されました.
結論:
- 正常な男性における1トリプトファンの尿経による毎日の排泄量は,以前に推定されたより著しく低い.
- L. arabinosusを用いた微生物学的方法は,1-トリプトファン. を定量化するのに信頼性が高い.
- 報告された排泄値の差異を調整するためにさらなる研究が必要になる可能性があります.
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