Background: Decorin is an extracellular matrix proteoglycan that may attenuate progression of atherosclerosis and its complications, such as stroke. Among its multitude of functions, decorin has been suggested to serve as a receptor for resistin, an adipokine involved in energy homeostasis. The GG genotype of the decorin polymorphism rs7308752 (A>G) and the CC genotype of the rs516115 (T>C) are associated with decreased plasma resistin levels.

Aims: The association of the above decorin genotypes with selected cardiometabolic risk factors and cerebrovascular events was studied in the Tampere adult population cardiovascular risk (TAMRISK) study.

Materials And Methods: A Finnish cohort of 336 subjects with diagnosed hypertension and 444 controls was analyzed. Samples were genotyped for decorin rs7308752 and rs516115 polymorphisms using a Competitive Allele-Specific PCR (KASP) technique. Cerebrovascular diseases (I60-I69), including transient cerebral ischemic attacks (G45), were followed up from 2005 to 2014.

Results: Subjects with either of decorin rs7308752 genotypes AG/GG had higher serum glucose (p = 0.015) and higher heart rate (p = 0.017) than those with AA genotype. Similarly, decorin rs516115 genotypes TC/CC were associated with higher serum glucose (p = 0.034) and higher frequency of cerebrovascular diseases (p = 0.015) compared to the TT genotype. However, decorin polymorphisms were not associated with hypertension or body mass index.

Conclusions: These two decorin polymorphisms appear to have biological relevance in human vascular pathophysiology.

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http://dx.doi.org/10.1089/gtmb.2016.0049DOI Listing

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