[Effects of platelet derived growth factor antisense oligodeoxynucleotides and tissue-type plasminogen activator gene transfection on inhibition of intimal proliferation].
To observe the effects of co-transfection of platelet derived growth factor antisense oligodeoxynucleotides (PDGF-AODN) and tissue-type plasminogen activator (tPA) gene on inhibition of intimal proliferation of auto-transplantion artery.



One hundred male New Zealand rabbits were randomly divided into four groups (25 in each): Group A (control group), Group B (PDGF-AODN transfection group), Group C (tPA gene transfection group) and Group D (PDGF-AODN and tPA co-transfection group). The left and right external iliac arteries were transplanted reciprocally. The transplanted arteries were respectively soaked in PDGF-AODN, pBudCE4.1/tPA and PDGF-AODN plus pBudCE4.1/tPA solution about 15 minute before transplantation. The rabbits were sacrificed at 3d, 1w, 2w, 4w and 8w after operation. The specimens were harvested for pathologic examination, electron microscopy, chromogenic substrate test, 3H-TdR incorporation test and immunohistochemical staining.



The scan electron microscopy showed that there were a few thrombocytes on vas-wall of Group C and D without thrombus, whereas there were abundant thrombocytes and thrombus forming on vas-wall of Group A and B. The intimal area, stenosis ratio of transplanted artery, 3H-TdR incorporation,the number of PDGF positive cell in Group D were significantly less than those in Group A (P<0.01),Group B and Group C (both P<0.05). The activity of tPA gene products in transplanted vas-wall of Group D was significantly higher than that of Group A (P<0.01).



Local co-transfection of PDGF-AODN and tPA gene can effectively inhibit the proliferation of vascular smooth muscle cells, hyperplasia of intima and restenosis of transplanted artery.
Wu
Zhong-jun
ZJ
The Department of General Surgery, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310003, China.
Shi
De
D
Li
De-wei
DW
Zheng
Shu-sen
SS
D000818:Animals; D004730:Endothelium, Vascular / Q000473:pathology*; D006083:Graft Occlusion, Vascular / Q000517:prevention & control*; D006965:Hyperplasia / Q000517:prevention & control; D007083:Iliac Artery / Q000637:transplantation; D008297:Male; D020319:Oligodeoxyribonucleotides, Antisense / Q000096:biosynthesis / Q000235:genetics*; D010982:Platelet-Derived Growth Factor / Q000096:biosynthesis / Q000235:genetics*; D011817:Rabbits; D011897:Random Allocation; D010959:Tissue Plasminogen Activator / Q000096:biosynthesis / Q000235:genetics*; D014162:Transfection; D017539:Tunica Intima / Q000473:pathology
D020319:Oligodeoxyribonucleotides, Antisense; D010982:Platelet-Derived Growth Factor; D010959:Tissue Plasminogen Activator