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Transfer of Bone-Marrow-Derived Mesenchymal Stem Cells Influences Vascular Remodeling and Calcification after Balloon Injury in Hyperlipidemic Rats

机译:高脂血症大鼠球囊损伤后骨髓来源间充质干细胞的转移影响血管重塑和钙化

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摘要

Bone-marrow-derived mesenchymal stem cells (BM-MSCs) were found to markedly increase atherosclerotic lesion size. The aim of this paper was to investigate whether BM-MSCs contribute to vascular remodeling and calcification after balloon injury in hyperlipidemic rats. Labeled BM-MSCs were found in the lesion of hyperlipidemic rats after balloon injury. Comparing injury group, transferred BM-MSCs significantly triggered vascular negative remodeling, characterized by the changes of remodeling index (0.628 ± 0.0293 versus 0.544 ± 0.0217), neointimal area (0.078 ± 0.015 mm2 versus 0.098 ± 0.019 mm2), PCNA index (23.91 ± 6.59% versus 43.11 ± 5.31%), and percentage of stenosis (18.20 ± 1.09% versus 30.58 ± 1.21%). Apparent vascular calcification was detected in medial layers at 6 weeks after balloon angioplasty, which may be associated with upregulation of bone morphogenetic protein-2 (BMP-2). Our data indicated that unselected BM-MSCs transfer may induce vascular remodeling and calcification after balloon injury in hyperlipidemic rats.
机译:发现骨髓来源的间充质干细胞(BM-MSC)明显增加了动脉粥样硬化病变的大小。本文的目的是研究高脂血症大鼠球囊损伤后BM-MSC是否有助于血管重塑和钙化。在高脂血症大鼠球囊损伤后的病变中发现了标记的BM-MSC。比较损伤组,转移的BM-MSCs显着触发血管负重塑,其特征在于重塑指数(0.628±0.0293对0.544±0.0217),新内膜面积(0.078±0.015 mm2对0.098±0.019 mm2),PCNA指数(23.91±分别为6.59%和43.11±5.31%,以及狭窄百分比(18.20±1.09%和30.58±1.21%)。球囊血管成形术后第6周,在中间层检测到明显的血管钙化,这可能与骨形态发生蛋白2(BMP-2)的上调有关。我们的数据表明,高脂血症大鼠球囊损伤后未选择的BM-MSC转移可能诱导血管重塑和钙化。

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