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Combined effect between CHRNB3-CHRNA6 region gene variant (rs6474412) and smoking in psoriasis vulgaris severity.

Gene. 2014 Jul 10;544(2):123-7. Epub 2014 Apr 30
Kun-Ju Zhu 1 , Cheng Quan 2 , Chi Zhang 3 , Zhong Liu 4 , Huan Liu 4 , Ming Li 5 , Shi-Jie Li 4 , Cheng-Yao Zhu 4 , Ge Shi 4 , Ke-Shen Li 6 , Yi-Ming Fan 4
Kun-Ju Zhu 1 , Cheng Quan 2 , Chi Zhang 3 , Zhong Liu 4 , Huan Liu 4 , Ming Li 5 , Shi-Jie Li 4 , Cheng-Yao Zhu 4 , Ge Shi 4 , Ke-Shen Li 6 , Yi-Ming Fan 4
+ et al

[No authors listed]

Author information
  • 1 Department of Dermatology, Affiliated Hospital of Guangdong Medical College, Zhanjiang, Guangdong, China. Electronic address: zhukunju1111@163.com.
  • 2 Department of Dermatology, Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, China.
  • 3 Department of Dermatology, Anhui Provincial Hospital, Hefei, Anhui, China.
  • 4 Department of Dermatology, Affiliated Hospital of Guangdong Medical College, Zhanjiang, Guangdong, China.
  • 5 Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.
  • 6 Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical College, Zhanjiang, China.

摘要


BACKGROUND:Many factors associated with causing psoriasis have been reported, such as the genetic and environmental factors. Smoking is one of the well-established environmental risk factors for psoriasis and also associated with the disease severity. In addition, several studies of psoriasis and psoriatic arthritis have documented gene-environment interactions involving smoking behavior. Although gene polymorphisms on nicotinic acetylcholine receptor subunits CHRNB3-CHRNA6 region gene have been found to correlate with smoking behavior and lung cancer susceptibility in Chinese Han population, the combined effect between the smoking-related genetic variants and smoking behavior on psoriasis vulgaris (PV) has been unreported. OBJECTIVE:To evaluate the combined effect of the smoking-related (rs6474412-C/T) polymorphism on CHRNB3-CHRNA6 region gene and smoking behavior on PV risk and clinic traits in Chinese Han population. METHODS:A hospital-based case-control study including 672 subjects (355 PV cases and 317 controls) was conducted. The variant of rs6474412 was typed by SNaPshot Multiplex Kit (Applied Biosystems Co., USA). RESULTS:The higher body mass index (BMI≥25), smoking behavior and alcohol consumption were risk factors for PV, and the estimated ORs were 1.55 (95% CI, 1.09-2.29), 1.74 (95% CI, 1.22-2.49) and 1.81 (95% CI, 1.25-2.62) respectively. The smoking patients had more severe conditions than non-smokers (OR=1.71, 95% CI, 1.08-2.70, P=0.020). The alleles and genotypes of rs6474412 were not associated with risk of PV, but the combined effect of rs6474412 genotype (TT) and smoking behavior increased severity of PV (OR=5.95; 95% CI, 1.39-25.31; P<0.05; adjusted OR=2.20; 95% CI, 1.55-3.14; P<0.001). CONCLUSIONS:Our results demonstrate that the combined effect of rs6474412-C/T polymorphism in smoking-related CHRNB3-CHRNA6 region gene and smoking behavior may not confer risk to PV, but may have impact on PV severity in Chinese Han population.

KEYWORDS: CHRNB3–CHRNA6 region gene variant, Combined effect, Psoriasis vulgaris, Smoking