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  • Title: Vascular endothelial growth factor (VEGF) gene polymorphisms (rs699947, rs833061, and rs2010963) and psoriatic risk in South Indian Tamils.
    Author: Sudhesan A, Rajappa M, Chandrashekar L, Ananthanarayanan PH, Thappa DM, Satheesh S, Chandrasekaran A.
    Journal: Hum Immunol; 2017 Oct; 78(10):657-663. PubMed ID: 28803785.
    Abstract:
    BACKGROUND: Psoriasis is a chronic inflammatory disease of the skin. Vascular endothelial growth factor (VEGF), a pro-angiogenic factor, is involved in the pathogenesis of psoriasis. Being highly polymorphic, several SNPs of VEGF have been reported to be associated with increased risk of psoriasis. OBJECTIVES: We determined the association of VEGF gene polymorphisms with risk of psoriasis in South Indian Tamils. METHODS: 300 cases of psoriasis and 300 controls were recruited in this case-control study. Genotyping of SNPs of VEGF gene was done using Taqman 5' allele discrimination assay. Estimation of VEGF levels in plasma was done by ELISA. RESULTS: VEGF (rs2010963) polymorphism and the CTC haplotype were found to confer an increased risk of psoriasis. However, two other VEGF SNPs, rs833061, and rs699947, showed no association with psoriasis susceptibility. VEGF levels were higher in patients with psoriasis, as compared with controls and significantly correlated with disease severity. CONCLUSIONS: Our results indicate that VEGF (rs2010963) polymorphism and CTC haplotype of the VEGF SNPs (rs699947, rs833061, and rs2010963) confer an increased risk of psoriasis in the South Indian Tamil population. Plasma VEGF levels are higher in patients with psoriasis, as compared with controls and are significantly correlated with disease severity.
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