Proliferation and C-myc Gene Expression of Smooth Muscle Cells in Rabbit Carotid Artery after Stenting
张新霞1
崔长琮2
胡雪松1
魏文斌1
李松1
许香广1
1.Department of Cardiology, Shenzhen Fu Tian Hospital Affliiated of Guangdong Medical College ,Shenzhen 510083, P R China2.Department of Cardiology, the First Hospital of Xi'an JiaoTong University,Xi'an 710061, P R China
摘要：Objectives To investigate the proliferation of smooth muscle cells (VSMCs) and the expression of c-myc gene in rabbit carotid arteries after stenting. Methods Platinium-Iridium stent were implanted into the right carotid arteries of 16 rabbits under vision. 7,14,30 and 90 days after the stenting procedure, morphological changes of VSMCs were observed under light and transmission electron microscope. The c-myc gene expression was detected by in situ hybridization (ISH) and immunohistochemical staining. Results 7 days after stenting, the phenotype of VSMCs changed from contractile to synthetic phenotype; there were a number of proliferative VSMCs in the neointima. At 14 and 30 days, there were synthetic and transitive VSMCs. At 90 days, the phenotype of VSMCs recovered to contractile phenotype.The ultrastructure of typical synthetic phenotype of VSMCs were round, containing a large amount of rough endoplasmic reticulum and mitochondria. Cmyc expression were positive both by ISH and immunohistochemical staining. Conclusions C-myc gene expression increases and closely relates to VSMCs proliferation after stenting. It may play an important role in the in-stent restenosis.
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分类号：R54(心脏、血管（循环系）疾病)
论文发表日期：2004-01-01
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：5( 44-48 )
英文信息