【摘 要】
：
Psoriasis is a chronic skin disease triggered by genetic, environment or other risk factors such as infection, drugs, stress, moisture, alcohol, and smoking. A
【机 构】
：
Bioinformatics Center, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Gra
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Psoriasis is a chronic skin disease triggered by genetic, environment or other risk factors such as infection, drugs, stress, moisture, alcohol, and smoking. A major psoriasis susceptibility locus at 6p21.3has been identified. Further studies found that HLA-DQAl*0201 allele was associated with psoriasis. However,there were few data exploring an association between the environmental factors and susceptibility genes. In this study, the samples of 189 patients with psoriasis and 333 healthy controls were collected with their consent and were carried on analysis through polymerase chain reaction sequence-specific primer (PCRSSP) method. The proportion of male psoriasis patients engaging in the smoking and alcohol was much higher than that of the control group (P＜0.005). The HLA-DQA 1 *0201 allele was present at significantly higher frequency in the patients with psoriasis (OR=4.25, P＜1.0× 10-6). Association was found between smoking, alcohol and HLA-DQA1 *0201 in male patients with psoriasis (OR＞6.91, P＜1.0× 10-4).
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