The role of CGRP and CALCA T-692C single-nucleotide polymorphism in psoriasis vulgaris.
2015
Abstract Calcitonin gene related protein (CGRP) is increased in both lesional and non-lesional psoriasis. The role of CGRP in the pathogenesis of psoriasis vulgaris is still not clear. We designed to determine the CGRP-I (or CALCA), II (or CALCB) gene expression and morbidity and CALCA T-692C single-nucleotide polymorphism (SNP). Peripheral blood mononuclear cells (PBMCs) and plasma samples were collected, and CGRP level and CGRP-I, II mRNA expression were measured in psoriasis patients and healthy controls. The CALCA T-692C genetic polymorphism in psoriasis and control subjects was also compared. A higher expression of CGRP-I, II mRNA in PBMCs in psoriasis patients. The plasma CGRP level in psoriasis patients was also higher than that in healthy subjects. SNP analysis showed carriers of the T-692C allele were over-represented in non-drinking Patients. The plasma CGRP level was higher in alcohol-drinking patients with TT genotype than that with TC genotype. The plasma CGRP level is increased in psoriasis patients and CALCA T-692C polymorphism TT genotype is a factor for the affectability in alcohol-drinking Psoriasis vulgaris patients.
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