エゼチミブは,シトステロレミア患者でプラズマ植物ステロルを効果的に減少させます
G Salen1, K von Bergmann, D Lütjohann
1UMDNJ-New Jersey Medical School, Newark, NJ 07103, USA. SalenGe@UMDNJ.edu
Circulation
|February 11, 2004
まとめ
エゼチミブは,腸内吸収を阻害することによって,シトステロレミア患者の高い植物ステロールレベルを著しく低下させます. この治療はシトステロールとカンペステロールを効果的に減少させ,この遺伝的障害に対する潜在的な治療戦略を提供します.
科学分野:
- 心臓病学 心臓病学
- 遺伝学 遺伝学とは
- 薬理学 薬理学とは
背景:
- サイトステロレミアは,食事中のステロールの吸収の増加と排泄の障害によって特徴づけられる珍しい遺伝疾患です.
- ABCG5またはABCG8遺伝子の変異により,シトステロールやカンペステロールなどの植物ステロールの血および組織レベルが上昇します.
- シトステロレミア患者の高いステロール濃度は,早発性動脈硬化症の発症に寄与する.
研究 の 目的:
- コレステロール吸収阻害剤であるエゼチミブが,シトステロレミア患者における植物ステロールレベルを下げる効果を調査する.
- この患者集団におけるエゼチミブ治療の安全性と耐性を評価する.
主な方法:
- マルチセンター,ダブルブラインド,ランダム化,プラセボ対照試験が行われました.
- シトステロレミア患者の37人は,3週間のプラセボランイン期間を経て8週間にわたってエゼチミブ (10 mg/日) またはプラセボを受給するためにランダムに割り当てられました.
- シトステロール,カンペステロール,その他のステロールの血濃度は,週2回ごとに測定されました.
主要な成果:
- エゼチミブによる治療は,シトステロール濃度 (P<0.001) が有意に21%低下し,プラセボ群では4%増加した.
- カンペステロール濃度もエゼチミブ投与で有意な漸進的な低下を示し,24% (P<0.001) 減少し,プラセボ投与では3%増加した.
- 樹脂やスタチンとの併用治療に関係なく,植物ステロールの減少が観察されました. エゼチミブは,重篤な有害事象のない良好な耐受性でした.
結論:
- エゼチミブは,シトステロレミア患者におけるプラズマ植物ステロール濃度を効果的に低下させる.
- この発見は,エゼチミブが植物性ステロールとコレステロールの両方の腸内吸収を抑制するメカニズムを支持する.
- エゼチミブは,シトステロレミアにおける超植物性ステロレミア管理のための安全で効果的な治療法です.
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