Int J Rheum Dis. 2020;23:627-632. | 627 wileyonlinelibrary.com/journal/apl
| INTRODUC TI ONSystemic lupus erythematosus (SLE) is a heterogeneous and chronic inflammatory autoimmune disease which has important features, such as autoantibody production against host nuclear antigens and multi-organ inflammation (like skin, kidneys, and brain). 1,2 Its occurrence is more common in women than men. 3 SLE etiology is unknown. Environmental factors, such as UV radiation,
AbstractAims: Systemic lupus erythematosus (SLE) is a chronic inflammatory autoimmune disease. Prostaglandins E2 (PGE2), the product of the cyclo-oxygenase 2 (COX-2) enzyme, has critical roles in the etiology of autoimmune diseases. PGE2 level is controlled by a balance between its synthesis mediator (COX-2 enzyme) and its catabolic key enzyme (15-hydroxyprostaglandin dehydrogenase [15-PGDH] enzyme). In the present study, the associations of genotypic polymorphisms in COX-2 and 15-PGDH with SLE were investigated. Methods: One hundred and sixty SLE patients and 160 healthy controls participated in the study. The polymerase chain reaction -restriction fragments length polymorphism method was used for genotyping. The COX-2 rs2745557 G/A and 15-PGDH rs8752 G/A polymorphisms were investigated.
Results:Regarding the COX-2 rs2745557 single nucleotide polymorphism, there was no significant association between COX-2 rs2745557 polymorphism and SLE.However, the dominant models showed a marginally significant relation (P = .048, odds ratio = 0.63, 95% CI = 0.4-1.0). Regarding GA genotype of 15-PGDH rd8752 polymorphism, there was a significant difference between two groups with a 4.5-fold increase in SLE development (P = .0001). The frequency of the A allele was higher in SLE patients than that in controls, showing a 1.4-fold increase in SLE development (P = .018).
Conclusion:All results showed the protective effects of the dominant model of COX-2 rs2745557 polymorphism and risk factor of 15-PGDH rs8752 polymorphism on SLE development.
K E Y W O R D S15-PGDH, COX-2, polymorphism, systemic lupus erythematosus Photosensitivity, n (%) 79 (49.4) Discoid rash, n (%) 6 (3.8) Mouth ulcers, n (%) 38 (23.8) Hair loss, n (%) 42 (26.3) Arthritis, n (%) 116 (72.5) Leukopenia, n (%) 30 (18.8) Thrombocytopenia, n (%) 35 (21.9) Renal disease, n (%) 21 (13.1) Antiphospholipid syndrome, n (%) 7 (4.4) Anti-double-stranded DNA, n (%) 108 (67.5) Antinuclear antibodies, n (%) 111 (69.4) Abbreviation: SLE, systemic lupus erythematosus. How to cite this article: Sandoughi M, Saravani M, Rokni M, Nora M, Mehrabani M, Dehghan A. Association between COX-2 and 15-PGDH polymorphisms and SLE susceptibility. Int J Rheum Dis. 2020;23:627-632. https ://doi.