Effect of Panax notoginseng saponins on vascular intima hyperplasia and PCNA expression in rat aorta after balloon angioplasty / 中国中药杂志

ABSTRACT

<p><b>OBJECTIVE</b>To explore the effect and the mechanism of panax notoginseng saponins (PNS) on the vascular intima hyperplasia and expression of proliferating cell nuclear antigen (PCNA) after aortic intima injury induced ballcon in rats.</p><p><b>METHOD</b>Model of aortic intima denudation in rats was established by 2.0 forgarty. The rats were randomly divided into sham group, model group, PNS group and atorvastatin group. Drugs were administered at the second day after the aortic intima injury for 14 days. The injured thoracic aorta segment were taken to detected the vascular morphological changes and expression of PCNA by histomorphology and immunohistochemic methods.</p><p><b>RESULT</b>The intimal area (IA), intimal thickness (IT), hyperplasia ratio of intimal area (HRIA), the ratio of intimal/mesolamella area and thickness in the model group were significantly higher than those of the sham operation (P<0.01). The above indexes in PNS and atorvastatin group were markedly lower than those in the model group (P<0.05). Compared with the sham group, the expression of PCNA in the model was enhanced remarkably (P<0.01). Compared with the model group, the expression of PCNA in PNS and atorvastatin group was significantly lowered (P<0.01).</p><p><b>CONCLUSION</b>PNS could inhibit intima hyperplasia by inhibiting proliferation of the vascular smooth muscle cell after vascular intima injury.</p>