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Year : 2013  |  Volume : 59  |  Issue : 2  |  Page : 115-120

Transcription activity of MMP-2 and MMP-9 metalloproteinase genes and their tissue inhibitor (TIMP-2) in acute coronary syndrome patients

1 Department of Cardiology, Medical University of Silesia, Katowice, Poland
2 Department of Epidemiology, Medical University of Silesia, Katowice, Poland

Correspondence Address:
J Glogowska-Ligus
Department of Epidemiology, Medical University of Silesia, Katowice
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0022-3859.113836

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Background: Acute coronary syndromes (ACS) are a consequence of coronary vessel atherosclerosis and they are a leading cause of death in industrialized countries. One of the ACS causative factors is the deranged ratio equilibrium of the matrix metalloproteinase/tissue inhibitor of metalloproteinases (MMPs/TIMPs). Aims: Assessment of transcriptional activity of metalloproteinase genes using Human Genome-U133A oligonucleotide microarrays and selection of candidate genes differentiating ACS patients from healthy subjects and finally, QRT-PCR (quantitative real time polymerase chain reaction) confirmation of the results. Settings and Design: The study involved 67 ACS patients, admitted on a consecutive basis, to the Cardiology Clinic as well as 24 healthy subjects (control). Materials and Methods: Ribonucleic acid isolated from peripheral blood mononuclear cells was analyzed by QRT-PCR. Transcriptional activity of the analyzed gene was assessed with TaqMan gene expression assays. Statistical Analysis: U Mann-Whitney test was used to compare the results. Results: Homogeneity of the investigated group was assessed through hierarchical clusterization whereas the nine genes differentiating ACS patients from healthy persons were selected using the Bland-Altman technique. Among these genes three (platelet derived growth factor D, NUAK family SNF1-like kinase 1 and peroxisomal biogenesis factor 1) showed decreased transcriptional activity whereas the remaining six genes (MMP-2 and MMP-9, CDK5RAP3, transmembrane BAX inhibitor motif containing 1, adenylate cyclase-associated protein 1 and TIMP-2) were increased. MMP-2, MMP-9 and TIMP-2 were further characterized by QRT-PCR. Conclusions: The obtained results permit to conclude that the increased expression of MMP-2 and MMP-9 metalloproteinases and their tissue inhibitor (TIMP-2) is responsible for disturbed equilibrium of the metalloproteinase/tissue inhibitors system and as a consequence, for destabilization of atherosclerotic plaque and occurrence of the acute coronary syndrome in the investigated group of patients.


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Online since 12th February '04
2004 - Journal of Postgraduate Medicine
Official Publication of the Staff Society of the Seth GS Medical College and KEM Hospital, Mumbai, India
Published by Wolters Kluwer - Medknow