Association of Plasminogen Activator Inhibitor 1 (PAI-1) 4G/5G Polymorphism and Susceptibility to SLE in Egyptian Children and Adolescents: A Multicenter Study.

Autor: Yousef, Aly A, Mohamed, Faisal Y, Boraey, Naglaa F, Akeel, Nagwa E, Soliman, Attia A, Waked, Nevin M, Hashem, Mustafa IA, Shehata, Hassan, Fahmy, Dalia S, Ismael, Ali, Ibrahim, Lamya M, Ibrahim, Mohamed AM, Salem, Hanan F, Yousry, Sherif M, Osman, Sherif F, Fouad, Rania A, Enan, Eman T, Attia, Mohammed A, Afify, Mona R, Zeidan, Nancy MS
Předmět:
Zdroj: Journal of Inflammation Research; Dec2020, Vol. 13, p1103-1111, 9p
Abstrakt: Background: Plasminogen activator inhibitor-1 (PAI-1) is a key molecule residing at the nexus between thrombosis and inflammatory processes. Recently, PAI-1 and its gene expression have emerged as a potential candidate for autoimmune disorders such as SLE. Objective: To investigate whether the PAI-1 4G/5G polymorphism at position − 675 could be a genetic marker for susceptibility to childhood-onset SLE and development of lupus nephritis among Egyptian children and adolescents. Methods: Three hundred fifty patients diagnosed with childhood-onset SLE and 350 well-matched healthy controls were included in this multi-center study. All subjects were genotyped for the PAI-1 promoter 4G/5G polymorphism at position − 675 using PCR– restriction fragment length polymorphism (RFLP). Serum PAI-1 levels were measured by ELISA. Results: The PAI-1 (- 675) 4G/4G genotype was more represented in c-SLE patients, as compared to the control group (38% vs 23%; OR =2.7; [95% CI: 1.47– 2.9]; P < 0.001). Patients carrying the PAI-1 4G/4G genotype or 4G allele were more likely to develop lupus nephritis (OR: 3.38; [95% CI: 1.9– 5.9]; P < 0.001, for the 4G/4G genotype and OR: 2.6; [95% CI: 1.85– 3.67]; for the 4G allele; P < 0.01). The PAI-1 4G/4G genotype was associated with higher PAI-1 serum concentrations (mean; 86.6± 22.7 ng/mL) as compared to those with a 4G/5G genotype (mean; 48.3± 16.5 ng/mL) and the lowest for the 5G/5G genotype (mean; 34.7± 11.4 ng/mL); P = 0.004. Conclusion: The PAI-1 4G/5G polymorphism may confer susceptibility to childhood-onset SLE and development of lupus nephritis among Egyptian children and adolescents. Moreover, the PAI-1 4G/4G genotype and 4G allele were associated with higher PAI-1 serum levels and higher disease activity scores. [ABSTRACT FROM AUTHOR]
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