<![CDATA[Background One of the extra-skeletal roles of vitamin D for health is associated with cardiovascular disease. Poor vitamin D status has been associated with vascular endothelial dysfunction. There were controversial results about the association between vitamin D deficiency and matrix metalloproteinase 9 (MMP-9) concentration. The purpose of the present study was to determine the concentrations of 25(OH) vitamin D [25(OH)D] in an elderly population and to find any association between 25(OH)D and MMP-9 concentrations.MethodsThis study was of cross-sectional design involving 160 male and female subjects aged 55–65 years, in South Jakarta, Indonesia. Determination of MMP-9 and 25(OH)D concentrations was done concurrently on subjects who met the inclusion and exclusion criteria after all study subjects had been selected. 25(OH)D and MMP-9 concentrations were assessed by direct competitive chemiluminescence immunoassay (CLIA) and enzyme-linked immunosorbent assay (ELISA) respectively. Statistical analysis used chi square and t tests.ResultsMean 25(OH)D concentration in the study subjects was 14.4 ± 6.4 ng/mL. A total of 68.8% of subjects had a 25(OH)D level of <20 ng/mL, and 31.2 % had a 25(OH)D level of >20 ng/mL.There was an increased MMP-9 concentration in male subjects with a 25(OH)D level of <20 ng/mL compared with subjects with 25(OH)D level of >20 ng/mL (p=0.011), but not among female subjects (p=0.809).ConclusionThe MMP-9 concentration was increased among male subjects with low level of (OH)D. This study confirmed that 25(OH)D concentration may have a potential role in endothelial function.]]>
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