增加syndecan-1的表达可以防止心脏扩张和功能障碍,在心肌梗塞后
Davy Vanhoutte1, Mark W M Schellings, Martin Götte
1Experimental and Molecular Cardiology/CARIM, University Hospital Maastricht, PO Box 5800, 6202 AZ Maastricht, The Netherlands.
Circulation
|January 24, 2007
概括
辛德肯-1 (Synd1) 通过减少炎症和矩阵重塑来保护心肌梗塞 (MI) 后的心脏. 增加Synd1表达改善心脏功能,并防止心脏病发作后的不良愈合.
科学领域:
- 心血管生物学 心血管生物学
- 蛋白质甘氨酸研究 蛋白质甘氨酸研究
- 炎症研究 炎症研究
背景情况:
- 辛德肯-1 (Synd1) 是一种与细胞相关的蛋白质糖,调节炎症和细胞矩阵相互作用.
- 研究了其在心脏炎症,矩阵重塑和心肌梗塞 (MI) 后功能的作用.
研究的目的:
- 确定Syndcan-1 (Synd1) 在心脏炎症和心肌梗塞 (MI) 后的愈合中的作用.
- 评估Synd1调制对心脏矩阵重塑和功能的影响.
主要方法:
- 在小鼠MI后评估Synd1蛋白和mRNA表达.
- 利用向基因删除和腺病毒基因传递来操纵Synd1水平.
- 评估了炎症,白细胞粘附/迁移,矩阵金属蛋白酶活性和原组织.
- 测量心脏扩张和心功能.
主要成果:
- 在心脏病发作后,Synd1表达增加,在7天达到峰值.
- 缺失Synd1导致炎症增加,心脏病发作愈合不良,MMP活性升高,心脏功能受损.
- 通过抑制白细胞粘附和迁移,Synd1基因传递减少了炎症.
- 过度表达Synd1保护心脏扩张和功能障碍.
结论:
- 在心肌梗塞 (MI) 后,心肌梗塞区域中Syndcan-1 (Synd1) 表达的增加具有保护性.
- Synd1减轻了过度的炎症和不利的矩阵重塑,从而保持心脏功能并防止扩张.
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