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30 January 2016 : Clinical Research  

VEGF Gene Polymorphisms Affect Serum Protein Levels and Alter Disease Activity and Synovial Lesions in Rheumatoid Arthritis

Jin-Ping YiACEG, Yu-Zhang WuABD, Nan YuBDF, Zhi-Wu YuBDF, Fu-Yuan XieBDG, Quan YuanADF

DOI: 10.12659/MSM.894912

Med Sci Monit 2016; 22:316-324

Abstract

BACKGROUND: Our study investigated 2 common single-nucleotide polymorphisms (SNPs) of vascular endothelial growth factor (VEGF) for their influences on serum VEGF levels, disease activity, and synovial lesions in rheumatoid arthritis (RA).

MATERIAL AND METHODS: Clinical information and venous blood samples were collected from 98 RA patients and 100 healthy controls. Genotyping on samples from the subjects was performed using matrix-assisted laser desorption ionization time of flight mass spectrometry (MALDI-TOF MS). Serum VEGF levels were determined using the enzyme-linked immunosorbent assay (ELISA). The synovial thickness and joint effusion of 28 joints were measured in RA patients, and total sharp score (TSS) and disease activity score (DAS) of 28 joints were recorded.

RESULTS: The genotype and allele frequencies of VEGF rs833070 (G>A) and rs3025030 (G>C) were significantly different between RA group and control group (all P<0.05). VEGF rs833070 and rs3025030 polymorphisms were associated with increasing VEGF serum levels in the RA group (all P<0.01). Statistically significant difference was observed in DAS28 between the different genotypes of VEGF rs833070 in RA patients (P<0.05). Importantly, significant differences in synovial thickening, joint effusion and synovial angiogenesis were observed between the different genotypes of VEGF rs833070 and rs3025030 polymorphisms (all P<0.05).

CONCLUSIONS: Our study provides evidence that VEGF polymorphisms might be important indicators of disease activity and synovial lesions, and prognostic factors in evaluating the treatment effectiveness in RA.

Keywords: Arthritis, Rheumatoid - ultrasonography, Case-Control Studies, Demography, Gene Frequency - genetics, Genetic Association Studies, Genetic Predisposition to Disease, Polymorphism, Single Nucleotide - genetics, Synovial Membrane - pathology, Vascular Endothelial Growth Factor A - genetics

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750