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機能的なエンドセリン系を持つ組織工学によるヒト血管媒介.
Karina Laflamme1, Charles J Roberge, Julie Labonté
1Laboratoire d'Organogénèse Expérimentale/LOEX, Hôpital Saint-Sacrement du CHA, and Department of Surgery, Laval University, Québec, PQ, Canada.
Circulation
|February 3, 2005
まとめ
人間の細胞を用いた組織工学による血管は,機能的なエンドセリンET (A) 受容体とエンドセリン変換酵素を示している. これは,再生医療の応用において,血管抵抗を制御する可能性を示唆している.
科学分野:
- 再生医学は,再生医療である.
- 血管生物学 血管生物学
- バイオマテリアル科学 バイオマテリアル科学
背景:
- 心血管疾患は,世界中で死亡の主な原因です.
- 現在の治療には,手術や移植が含まれており,制限があります.
- 人間の成分を用いた患者特有の血管移植が必要である.
研究 の 目的:
- 新しい組織工学で作られたヒトの血管におけるエンドテリナージックシステムの機能を調査する.
- エンドセリン受容体および関連する酵素の存在と活性を評価する.
主な方法:
- 組織工学によるヒトの血管は,ヒトの細胞で自己組み立て方法を用いて構築されました.
- エンドセリン受容体の選択的アゴニストとアンタゴニストを用いた血管収縮研究が行われました.
- リバーストランスクリプトーゼポリメラーゼ連鎖反応 (RT-PCR) は,受容体mRNAを検出するために使用されました.
- エンドセリン変換酵素の活性が評価されました.
主要な成果:
- 機能的なエンドセリンET ((A)) 受容体は,エンジニアリングされた血管媒介で特定されました.
- RT-PCRは,ET(A) 受容体mRNAの存在を確認したが,ET(B) 受容体mRNAは検出されなかった.
- エンドセリン変換酵素は,エンジニアリングされた血管に存在し,機能していることが判明しました.
結論:
- 組織工学による血管の介質は,機能的なエンドセリンET (A) 受容体を持っています.
- エンドセリン変換酵素の存在は,血管トーン調節のための血管の潜在能力をさらにサポートします.
- これらの発見は,血管抵抗を制御するエンジニアリングされた血管の能力を示している.
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