関連する実験動画
Updated: Jun 14, 2026
12:31
In Vivo Modeling of the Morbid Human Genome using Danio rerio
Published on: August 24, 2013
カサワのシアノゲンとコンゾは,アフリカで見られる上部モトニューロン疾患です
T Tylleskär1, M Banea, N Bikangi
1Department of Paediatrics, University Hospital, Uppsala, Sweden.
Lancet (London, England)
|January 25, 1992
まとめ
熱帯性骨髄病であるコンゾは,適切に加工されていないカサバから高血量シアン化物と関連しています. 食品加工と硫黄の摂取を改善することで,この神経学的障害を予防することができます.
科学分野:
- 神経学 神経学とは
- 毒理学 毒理学 毒理学
- 栄養科学とは,栄養科学である.
背景:
- コンゾは熱帯性骨髄病で,スパスティックなパラパレシスを引き起こし,東アフリカではカサバの消費に関連した流行が起こっています.
- 以前の研究では,カサバとコンゾの病因の食事中のシアン化物の間の直接的な関係に異議を唱えていた.
研究 の 目的:
- ザイールの農村部でコンゾの発達における食中シアン化物被曝の役割を調査する.
- コンゾの患者および対照群におけるカサバのシアノゲン含有量,尿中のチオシアネート,および血中のシアン化物レベルを測定するために.
主な方法:
- カサバ粉の評価されたシアノゲン含有量.
- シアン化物摂取のバイオマーカーとして測定された尿チオシアネート.
- 血中のシアン化物濃度をコンゾに感染した個人と,影響を受けていない対照群と比較した.
主要な成果:
- 影響を受けた集団は1日間加工されたカサバを摂取し,尿中のチオシアン酸塩濃度が高い (757mmol/l),3日間浸漬したカサバを摂取した対照群 (50mmol/l) と比較した.
- Konzo患者の血中シアン化物濃度 (>4mmol/l) は,対照群 (p<0.01) よりも著しく高かった.
- 血清のチオシアネート濃度は,グループによって類似しており,変換障害を示唆しています.
結論:
- 持続的に高い血中シアン化物濃度が,硫黄の摂取不足によって悪化し,シアン化物の解毒が妨げられ,コンゾで因果的な役割を果たします.
- 貧困と食糧不足が根本的な原因ですが,カサバの加工を改善することで予防することができます.
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