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Updated: Jul 27, 2026

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A Piglet Model of Neonatal Hypoxic-Ischemic Encephalopathy
Published on: May 16, 2015
低血アルギニン濃度は,脳マラリアと窒素酸化物生産の低下を患っている小児の血アルギニン濃度です
Bert K Lopansri1, Nicholas M Anstey, J Brice Weinberg
1Division of Infectious Diseases, VA and University of Utah Medical Centers, Salt Lake City, UT, USA.
Lancet (London, England)
|February 28, 2003
まとめ
脳性マラリアの子どもはL-アルギニンの濃度が低く,この状態は低アルギニネミアと呼ばれます. この欠乏は重症疾患と関連しており,酸化窒素 (NO) の生成を阻害し,マラリアの結果に影響を与える可能性があります.
科学分野:
- 免疫学 免疫学とは
- 栄養バイオケミストリー
- 小児の感染症について
背景:
- 窒素酸化物 (NO) の生成とNO合成酵素2 (NOS2) の発現は,脳マラリアのタンザニアの子供に減少しています.
- NOS2を調節する要因は,NO生成の基質であるL-アルギニンの吸収と合成にも影響を及ぼします.
研究 の 目的:
- L-アルギニンの濃度を,脳マラリアの有無と有無のタンザニアの子どもで調べる.
- L-アルギニン濃度と脳マラリアの重症度および症例死亡率との関連性を決定する.
主な方法:
- タンザニアの脳マラリアの子ども,合併症のないマラリア,そして健康な対照群の血サンプルを分析した.
- L-アルギニンの濃度は,生化学的測定を用いて測定されました.
- 症例死亡率との関連性を評価するために,ロジスティック回帰分析を使用した.
主要な成果:
- L-アルギニンの濃度は,合併症のないマラリア (70ミクロモール/L) と健康な対照群 (122ミクロモール/L) と比較して,脳マラリアの子供 (46ミクロモール/L) で有意に低かった.
- ハイポアルギニネミア (低L-アルギニン) は,脳マラリア症例死亡率と強く関連していました.
- 減少したL-アルギニンのレベルは,重度のマラリアでNOの生産が減少したものと相関しています.
結論:
- 低アルギニネミア症は,脳マラリアを患っているタンザニアの子どもに多く見られます.
- 低レベルのL-アルギニンは,重度の病気と脳マラリアにおける死亡率の増加に寄与する可能性があります.
- L-アルギニンのレベルを回復することは,重症マラリアの潜在的な治療戦略である可能性があります.
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