Angiotensin-converting enzyme insertion/deletion polymorphism and susceptibility to psoriasis in a Chinese population

• Main Authors: KeDa Yang, Fan Zhang, FangFang Li, Juan Su, SaiLan Wen, Yang Liu, DeYun Feng
• Format: Article
• Language: English
• Published: Hindawi - SAGE Publishing 2014-03-01
• Series: Journal of the Renin-Angiotensin-Aldosterone System
• Online Access: https://doi.org/10.1177/1470320313494433

Introduction: The relationship between the angiotensin-converting enzyme ( ACE ) insertion/deletion (I/D) polymorphism and psoriasis has previously been studied mainly in Caucasians and only once in Asians. The aim of this study is to evaluate the association between the ACE I/D polymorphism and the risk of psoriasis in a Chinese population. Materials and methods: The study population consisted of 668 psoriasis patients and 668 matched control subjects. The ACE I/D gene polymorphism was analyzed using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). Results: The frequency of the ACE II genotype (odds ratio (OR) = 1.32, 95% confidence interval (CI) = 1.06, 1.63; P = 0.01) and I allele (OR = 1.25, 95% CI = 1.06, 1.48; P = 0.01) in patients with psoriasis was significantly higher than that in the control group. And the D allele frequency in patients with psoriasis was significantly lower (OR = 0.80, 95% CI = 0.68, 0.95; P = 0.01) than that in the control group. When stratified by family history, the frequency of the DD genotype was marginally significantly lower in patients with a positive family history of psoriasis (familial psoriasis) than in those with negative (sporadic psoriasis) (OR = 0.47, 95% CI = 0.23, 0.97; P = 0.04). When stratified by onset of the disease, type of psoriasis and the severity of psoriasis, no statistically significant result was observed. Conclusion: Our study suggested that the ACE II genotype and I allele might confer susceptibility to psoriasis in a Chinese population.