Molecular Basis of Restenosis and Novel Issues of Drug-Eluting Stents

Inoue, Teruo; Node, Koichi

doi:10.1253/circj.cj-09-0059

Cited by 166 publications

(117 citation statements)

References 77 publications

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“…This result suggests that platonin could be a potential agent for treating VSMC proliferation-related diseases. Inflammatory processes followed by the proliferation of vascular components such as VSMCs and the extracellular matrix are associated with neointimal thickening [23] . Furthermore, reactive oxygen species (ROS) are reported to be a key mediator of signaling pathways that underlie vascular inflammation [24] .…”

Section: Discussionmentioning

confidence: 99%

Platonin inhibited PDGF-BB-induced proliferation of rat vascular smooth muscle cells via JNK1/2-dependent signaling

Chang

Uen²,

Chen

et al. 2011

Acta Pharmacol Sin

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Aim: To examine the inhibitory actions of the immunoregulator platonin against proliferation of rat vascular smooth muscle cells (VSMCs). Methods: VSMCs were prepared from the thoracic aortas of male Wistar rats. Cell proliferation was examined using MTT assays. Cell cycles were analyzed using flow cytometry. c-Jun N-terminal kinase (JNK)1/2, extracellular signal-regulated kinase (ERK)1/2, AKT, and c-Jun phosphorylation or p27 expression were detected using immunoblotting. Results: Pretreatment with platonin (1-5 μmol/L) significantly suppressed VSMC proliferation stimulated by PDGF-BB (10 ng/mL) or 10% fetal bovine serum (FBS), and arrested cell cycle progression in the S and G 2 /M phases. The same concentrations of platonin significantly inhibited the phosphorylation of JNK1/2 but not ERK1/2 or AKT in VSMCs stimulated by PDGF-BB. Furthermore, platonin also attenuated c-Jun phosphorylation and markedly reversed the down-regulation of p27 expression after PDGF-BB stimulation. Conclusion: Platonin inhibited VSMC proliferation, possibly via inhibiting phosphorylation of JNK1/2 and c-Jun, and reversal of p27 down-regulation, thereby leading to cell cycle arrest at the S and G 2 /M phases. Thus, platonin may represent a novel approach for lowering the risk of abnormal VSMC proliferation and related vascular diseases.

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Section: Discussionmentioning

confidence: 99%

Platonin inhibited PDGF-BB-induced proliferation of rat vascular smooth muscle cells via JNK1/2-dependent signaling

Chang

Uen²,

Chen

et al. 2011

Acta Pharmacol Sin

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“…3,4 A particularly promising area for the therapeutic application of multilayered polyelectrolyte films is in the coating of drug-eluting coronary stents 5 as an attempt to prevent restenosis after percutaneous transluminal angioplasty. 6,7 For this purpose, it is essential that the stent coating must not only be biocompatible but should also be a surface that is conducive for the adhesion of endothelial cells so as to facilitate healing of the blood vessel and prevent restenosis and thrombosis.…”

Section: Introductionmentioning

confidence: 99%

Adhesion, proliferation, and gene expression profile of human umbilical vein endothelial cells cultured on bilayered polyelectrolyte coatings composed of glycosaminoglycans

et al. 2010

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This study characterized human umbilical vein endothelial cell ͑HUVEC͒ adhesion, proliferation, and gene expression on bilayered polyelectrolyte coatings composed of an outermost layer of glycosaminoglycans ͑hyaluronan, heparin, or chondroitin sulfate͒, with an underlying layer of poly-L-lysine or chitosan. The proportion of cells that adhered to the various polyelectrolyte coatings after 1 and 2 h incubations was quantified by the WST-8 assay. Interchanging poly-L-lysine with chitosan resulted in significant differences in cellular adhesion to the outermost glycosaminoglycan layer after 1 h, but these differences became insignificant after 2 h. The proliferation of HUVEC on the various bilayered polyelectrolyte coatings over 10 days was characterized using the WST-8 assay. Regardless of whether the underlying layer was poly-L-lysine or chitosan, HUVEC proliferation on the hyaluronan outermost layer was significantly less than on heparin or chondroitin sulfate. Additionally, it was observed that there was more proliferation with poly-L-lysine as the underlying layer, compared to chitosan. Subsequently, real-time polymerase chain reaction was used to analyze the expression of seven genes related to adhesion, migration, and endothelial function ͑VWF, VEGFR, VEGFA, endoglin, integrin-␣5, ICAM1, and ICAM2͒ by HUVEC cultured on the various bilayered polyelectrolyte coatings for 3 days. With poly-L-lysine as the underlying layer, biologically significant differences ͑greater than twofold͒ in the expression of VWF, VEGFR, VEGFA, endoglin, and ICAM1 were observed among the three glycosaminoglycans. With chitosan as the underlying layer, all three glycosaminoglycans displayed biologically significant differences in the expression of VWF and VEGFR compared to the chitosan control. CT-HA displayed the highest level of expression of VWF, whereas expression levels of VEGFR were almost similar among the three glycosaminoglycans.

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“…Moreover, the following drop in NO and H 2 S bioavailability stimulates VSMCs to switch from a contractile quiescent to a proliferative (synthetic) motile phenotype. As a consequence, VSMC migrate from the media towards the inner surface of the vessel, where they continue to proliferate and secrete extracellular matrix proteins, leading to neointimal tissue formation [26].…”

Section: Endothelial Dysfunctionmentioning

confidence: 99%

“…The consequent thickening of the vascular wall, which has been termed in-stent restenosis (ISR), perturbs blood supply to vital and peripheral organs and dramatically affects cardiovascular homeostasis [26]. Another form of endothelial dysfunctions is caused by hyper-activation of EC by a variety of risk factors, including hypercholesterolemia, aging, hypertension, turbulent blood flow, smoking, type I and type II diabetes, glycaemia, and hyperhomocysteinemia, etc [1].…”

Section: Endothelial Dysfunctionmentioning

confidence: 99%

Hydrogen Sulfide and Endothelial Dysfunction: Relationship with Nitric Oxide

Altaany¹,

Moccia²,

Munaron³

et al. 2014

CMC

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The endothelium is a cellular monolayer that lines the inner surface of blood vessels and plays a central role in the maintenance of cardiovascular homeostasis by controlling platelet aggregation, vascular tone, blood fluidity and fibrinolysis, adhesion and transmigration of inflammatory cells, and angiogenesis. Endothelial dysfunctions are associated with various cardiovascular diseases, including atherosclerosis, hypertension, myocardial infarction, and cardiovascular complications of diabetes. Numerous studies have established the antiinflammatory, anti-apoptotic, and anti-oxidant effects of hydrogen sulfide (H 2 S), the latest member to join the gasotransmitter family along with nitric oxide and carbon monoxide, on vascular endothelium. In addition, H 2 S may prime endothelial cells (ECs) toward angiogenesis and contribute to wound healing, aside to its well-known ability to relax vascular smooth muscle cells (VSMCs), thereby reducing blood pressure. Finally, H 2 S may inhibit VSMC proliferation and platelet aggregation. Consistently, a deficit in H 2 S homeostasis is involved in the pathogenesis of atherosclerosis and of hyperglycaemic endothelial injury. Therefore, the application of H 2 S-releasing drugs or using gene therapy to increase endogenous H 2 S level may help restore endothelial function and antagonize the progression of cardiovascular diseases. The present article reviews recent studies on the role of H 2 S in endothelial homeostasis, under both physiological and pathological conditions, and its putative therapeutic applications. Endothelial structure and functionThe endothelium lines the luminal surface of the entire vascular tree and the cardiac chambers, where it is termed endocardium. As a consequence, the endothelium presents a rather broad extension (300 to 1000 m 2 ) and weight (1.5 kg), achieving sizes comparable to other vital organs of the human body [1,2]. The endothelium can, therefore, be regarded as a real "organ spread across the organism" [3] and, as such, not only it is important for the regulation of local tissue functions, but also for maintaining the whole organism homeostasis [4]. Vascular endothelial cells (ECs) possess a polarized architecture: their luminal membrane is directly exposed to hematic constituents and circulating cells, while the basolateral surface is separated from surrounding tissues by a glycoprotein basement membrane -the sub-endothelial basement -which is formed by fibronectin, laminin, and collagen and is secreted by ECs themselves [2].Heterogeneity is, however, the hallmark of endothelium. ECs differ in morphology, function, and gene expression profile, so that even neighbouring cells from the same organ and blood vessel type exhibit distinct features [4]. For instance, vascular ECs may vary in size, shape, thickness and position of the nucleus. Albeit oriented along direction of blood flow, to attenuate the impact of shear stress forces on the vascular wall, microvascular ECs are rather thin (0.1 µm) and spindle-like, whilst their macrovascul...

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Molecular Basis of Restenosis and Novel Issues of Drug-Eluting Stents

Cited by 166 publications

References 77 publications

Platonin inhibited PDGF-BB-induced proliferation of rat vascular smooth muscle cells via JNK1/2-dependent signaling

Platonin inhibited PDGF-BB-induced proliferation of rat vascular smooth muscle cells via JNK1/2-dependent signaling

Adhesion, proliferation, and gene expression profile of human umbilical vein endothelial cells cultured on bilayered polyelectrolyte coatings composed of glycosaminoglycans

Hydrogen Sulfide and Endothelial Dysfunction: Relationship with Nitric Oxide

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