Suppression of Intimal Hyperplasia in a Rabbit Model of Arterial Balloon Injury by Enalaprilat But Not Dimethyl Sulfoxide

1994 ◽  
Vol 8 (2) ◽  
pp. 158-165 ◽  
Author(s):  
Michael M. Law ◽  
Michael D. Colburn ◽  
George E. Hajjar ◽  
Hugh A. Gelabert ◽  
William J. Quiñones-Baldrich ◽  
...  
1996 ◽  
Vol 270 (1) ◽  
pp. H298-H305 ◽  
Author(s):  
E. Van Belle ◽  
B. Vallet ◽  
J. L. Auffray ◽  
C. Bauters ◽  
M. Hamon ◽  
...  

Angiotensin-converting enzyme (ACE) inhibitors reduce intimal hyperplasia after balloon injury. A role for nitric oxide (NO) has been suggested in this effect. Because recent data suggest that NO may modulate some features of endothelial cells and because endothelial cells are involved in the control of intimal hyperplasia, we investigated the role of NO synthesis in the effect of an ACE inhibitor, perindopril, on neoendothelial dysfunction and intimal hyperplasia in a rabbit model of unilateral iliac balloon injury. New Zealand White male rabbits received placebo, perindopril, or cotreatment with perindopril and NG-nitro-L-arginine methyl ester (L-NAME) and were evaluated 4 wk after the injury. Fifteen rabbits (5 in each group) were used to assess in vitro vasoreactivity and twenty-four (8 in each group) for morphometric analysis. In injured vessels, neoendothelium-dependent relaxation in ACE inhibitor-treated animals was improved compared with placebo (P < 0.05) and restored to the level of noninjured vessels (NS). The improvement observed with ACE inhibitor was abolished by cotreatment with L-NAME (P < 0.05). In the same vessels, no effect was observed on neoendothelium-independent vasoreactivity. The improved neoendothelial dysfunction with ACE inhibitor was associated with a 66% reduction in intimal thickening (P < 0.01). The effect was also reversed by cotreatment with L-NAME (P < 0.01). In noninjured vessels, treatment did not alter vasoreactivity or morphology of the vessel wall. These results suggest that NO synthesis may play a key role in the improvement of vascular function seen with ACE inhibitor in balloon-injured vessels.


Gene Therapy ◽  
2006 ◽  
Vol 14 (5) ◽  
pp. 396-404 ◽  
Author(s):  
R Cooney ◽  
S O Hynes ◽  
F Sharif ◽  
L Howard ◽  
T O'Brien

2015 ◽  
Vol 117 (suppl_1) ◽  
Author(s):  
He Shuying ◽  
Wu Jie

To determine the effects of heparin-derived oligosaccharides (HDOs) on vascular intimal hyperplasia (IH) in balloon-injured carotid artery and the mechanism involved. The animal model was established by rubbing the endothelia within the common carotid artery (CCA) of male rabbits along with a high-cholesterol diet. The arterial IH was testified by histopathological changes of the CCA. Serum lipids were detected using automated biochemical analysis; Expression of mRNAs corresponding to vascular endothelial growth factor (VEGF), basic fibroblast growth factor (bFGF), vascular cell adhesion molecule-1 (VCAM-1), monocyte chemoattractant protein-1 (MCP-1), scavenger receptor class B type I (SR-BI) and ATP-binding cassette transporter A1 (ABCA-1) were analyzed using reverse transcription polymerase chain reaction assays. Expressions of VEGF, VCAM-1, MCP-1, SR-BI and ABCA-1 proteins were detected by western blotting. Enzyme-linked immunosorbent assays were used to quantify expression levels of VEGF and bFGF. The results implied that administration of HDO significantly inhibited common carotid artery histopathology and restenosis that was induced by balloon injury. Treatment with HDO also significantly decreased mRNA and protein expression levels of VEGF, bFGF, VCAM-1, MCP-1, and SR-BI in the arterial wall, however ABCA-1 expression levels were elevated. HDO treatment led to a reduction in various serum lipids (total cholesterol, triglycerides, high-density and low-density lipoproteins). We concluded that, in a rabbit model, HDO can ameliorate IH and the mechanisms might involved VEGF, bFGF, VCAM-1, MCP-1, SR-BI and ABCA-1.


2000 ◽  
Vol 82 ◽  
pp. 191
Author(s):  
Tomoko Ishibashi ◽  
Satoshi Obayashi ◽  
Takeshi Aso ◽  
Hiroshi Azuma

2009 ◽  
Vol 296 (1) ◽  
pp. H211-H219 ◽  
Author(s):  
Kentaro Meguro ◽  
Haruko Iida ◽  
Haruhito Takano ◽  
Toshihiro Morita ◽  
Masataka Sata ◽  
...  

Voltage-gated Na+ channel currents ( INa) are expressed in several types of smooth muscle cells. The purpose of this study was to evaluate the expression of INa, its functional role, pathophysiology in cultured human (hASMCs) and rabbit aortic smooth muscle cells (rASMCs), and its association with vascular intimal hyperplasia. In whole cell voltage clamp, INa was observed at potential positive to −40 mV, was blocked by tetrodotoxin (TTX), and replacing extracellular Na+ with N-methyl-d-glucamine in cultured hASMCs. In contrast to native aorta, cultured hASMCs strongly expressed SCN9A encoding NaV1.7, as determined by quantitative RT-PCR. INa was abolished by the treatment with SCN9A small-interfering (si)RNA ( P < 0.01). TTX and SCN9A siRNA significantly inhibited cell migration ( P < 0.01, respectively) and horseradish peroxidase uptake ( P < 0.01, respectively). TTX also significantly reduced the secretion of matrix metalloproteinase-2 6 and 12 h after the treatment ( P < 0.01 and P < 0.05, respectively). However, neither TTX nor siRNA had any effect on cell proliferation. L-type Ca2+ channel current was recorded, and INa was not observed in freshly isolated rASMCs, whereas TTX-sensitive INa was recorded in cultured rASMCs. Quantitative RT-PCR and immunostaining for NaV1.7 revealed the prominent expression of SCN9A in cultured rASMCs and aorta 48 h after balloon injury but not in native aorta. In conclusion, these studies show that INa is expressed in cultured and diseased conditions but not in normal aorta. The NaV1.7 plays an important role in cell migration, endocytosis, and secretion. NaV1.7 is also expressed in aorta after balloon injury, suggesting a potential role for NaV1.7 in the progression of intimal hyperplasia.


2006 ◽  
Vol 13 ◽  
pp. S335
Author(s):  
Ronan Cooney ◽  
Sean O. Hynes ◽  
Sharif Faisal ◽  
Timothy O'Brien

2002 ◽  
Vol 3 (1) ◽  
pp. 16-19 ◽  
Author(s):  
David Rosenthal ◽  
Scott L Stevens ◽  
C.S Skillern ◽  
Eric D Wellons ◽  
Keith Robinson ◽  
...  

2020 ◽  
Vol 1 ◽  
pp. 200-206
Author(s):  
Rodrigo Lozano-Corona ◽  
Hugo Laparra-Escareno ◽  
Javier E. Anaya-Ayala ◽  
Alejandro Zentella-Dehesa ◽  
Jesus J. Baquera-Heredia ◽  
...  

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