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Functional polymorphisms in the promoter of the matrix metalloproteinase-9 (MMP-9) gene are not linked with significant plasma MMP-9 variations in healthy subjects
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Caroline Demacq
Published/Copyright:
January 1, 2008
Abstract
Background: Matrix metalloproteinase-9 (MMP-9) is involved in the degradation of the extracellular matrix during physiological and pathological processes. Two functional polymorphisms [C–1562T and microsatellite (CA)13–25] in the promoter region of the MMP-9 gene have been associated with several diseases. The aim of this study was to examine whether these MMP-9 polymorphisms and haplotypes are linked with plasma MMP-9 variations in healthy subjects.
Methods: We studied 177 healthy male white volunteers (age range 20–55 years) who were non-smokers and not taking any medication. Genomic DNA was extracted from whole blood and genotypes for the C–1562T and the microsatellite (CA)n polymorphisms were determined. MMP-9 levels were measured in plasma samples by gelatin zymography.
Results: The frequency of the alleles C and T for the C–1562T polymorphism were 90% and 10%, respectively. The frequency of the alleles with less than 21 CA repeats (L) and with 21 repeats or higher (H) were 47% and 53%, respectively. We found no differences in plasma MMP-9 levels among the genotype groups or among different haplotypes (all p>0.05).
Conclusions: These findings suggest that functional polymorphisms in the promoter of the MMP-9 gene are not linked with significant plasma MMP-9 variations in healthy subjects.
Clin Chem Lab Med 2008;46:57–63.
Received: 2007-7-10
Accepted: 2007-9-3
Published Online: 2008-01-01
Published in Print: 2008-01-01
©2008 by Walter de Gruyter Berlin New York
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