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Matrix Metalloproteinases Expression in the Neointimal Hyperplasia Induced by Drug Eluting Stent (DES) Implantation

NCT03375528 · Status: UNKNOWN · Phase: NA · Type: INTERVENTIONAL · Enrollment: 50

Last updated 2017-12-18

No results posted yet for this study

Summary

If intimal growth is such that the initial lumen is narrowed significantly, distal blood flow is restricted and chronic tissue ischemia results. This occurs in native coronary arteries and during restenosis after coronary angioplasty or failure of some coronary vein grafts. Stent implantation has become the principal revascularization technique for coronary artery disease. But, in-stent restenosis (ISR) by neointimal hyperplasia persists as a significant limitation of this procedure in the era of drug eluting stent (DES). Coronary intervention might induce an inflammatory response by arterial wall damage, release of inflammatory and chemoattractant factors resulting in leukocyte and platelet activation. Then, Migration and proliferation of neointimal smooth muscle cells together with the deposition of extracellular matrix might lead to the development of ISR.

It is known that matrix metalloproteinases (MMPs) play a key role in the pathogenesis of restenosis by controlling extracellular matrix degradation and the release of matrix-degrading MMPs, including MMP -2 and MMP-9, which facilitate intimal remodeling after angioplasty. Previous studies showed that increased levels of MMPs in coronary arteries undergoing percutaneous intervention may be associated with vascular remodeling and restenosis by promoting migration of vascular smooth muscle cells. Recently, Gregory et al. demonstrated that elevated serum activities of MMP-2 and -9 are associated with dramatically increased restenosis rates after PCI with implantation of DES.

In patients with DESs, determination of MMP levels might be useful for identification of patients who are at high risk for ISR. However, not much is known about the relationship between MMPs and neointimal hyperplasia in patients with DES. In this study, the serum activity of MMP-2 and 9 were investigated in patients who had undergone follow-up coronary angiography with intravascular ultrasound (IVUS), which performed at 9 months post-DES implantation. Our aim was to evaluate if individual or combined levels of MMPs were associated with increased neointimal hyperplasia volume, that is, to evaluate the relationship, correlation between the levels of MMPs and neointimal hyperplasia volume.

Conditions

Interventions

DEVICE

DES implantation

Coronary artery intervention using Drug eluting stent and Intravascular Ultrasound is performed.

Sponsors & Collaborators

  • Dankook University

    lead OTHER

Principal Investigators

  • Tae Soo Kang, PhD · Dankook University Hospital 201 Manghyanro, Dongnam-gu, Cheonan-si, Chunchungnam-do, 31116, Republic of Korea

Study Design

Allocation
NA
Purpose
PREVENTION
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
20 Years
Max Age
90 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2018-01-01
Primary Completion
2019-01-01
Completion
2019-05-01

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03375528 on ClinicalTrials.gov