Cryoplasty for Canine Iliac Artery Stenosis and its Impact on Expression of TIMP-2 and MMP-2. (July 2015)

• Record Type: Journal Article
• Authors: Wu, Zhengzhong; Zang, Shengbing; liu, Wenwen; Jiang, Na; Yang, Weizhu
• Is Part Of: Vascular & endovascular surgery. Volume 49:Number 5/6(2015)
• Page Start: 135
• Page End: 141
• Publication Date: 2015-07
• Subjects: cryoplasty -- balloon angioplasty -- peripheral artery disease -- restenosis; Blood-vessels -- Surgery -- Periodicals; Blood-vessels -- Endoscopic surgery -- Periodicals; Vascular Surgical Procedures -- Periodicals; Angioplasty -- Periodicals; Surgical Procedures, Minimally Invasive -- Periodicals; Vascular Diseases -- surgery -- Periodicals; Vaisseaux sanguins -- Chirurgie -- Périodiques; Vaisseaux sanguins -- Chirurgie endoscopique -- Périodiques; 617.41
• DOI: 10.1177/1538574415603488
• Languages: English
• ISSNs: 1538-5744

Abstract

Objective: This study was performed to observe the effects of cryoplasty on canine iliac artery stenosis and the expression of tissue inhibition of matrix metalloproteinase 2 (TIMP-2) and matrix metalloproteinase 2 (MMP-2). Methods: We produced a reliable canine model to mimic the atherosclerotic stenosis in the iliac artery by suturing the artery followed by vessel ligation to create an injury to intimal and medial walls. Sixteen mongrel dogs with iliac artery stenosis were randomized to conventional balloon angioplasty (n = 8) or cryoplasty (n = 8). Results: Four weeks posttreatment, the cryoplasty group with less collagen fibers and smooth muscle demonstrated significantly larger luminal diameter of iliac artery compared to the balloon angioplasty group ( P < .001). Expression of TIMP-2 significantly increased and expression of MMP-2 significantly reduced in iliac artery of the cryoplasty group compared to conventional balloon angioplasty. Conclusion: Our study suggests cryoplasty might increase the expression of TIMP-2 and decrease the expression of MMP-2, thereby inhibiting vascular hyperplasia and collagen fibers synthesis of the stenotic vessels.