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Zhang L.L.,Key Laboratory of Dermatology | Zhang L.L.,Anhui Medical University | Yang S.,Key Laboratory of Dermatology | Wei W.,Anhui Medical University | Zhang X.J.,Key Laboratory of Dermatology
Pharmacogenetics and Genomics | Year: 2014

Disease-modifying antirheumatic drugs (DMARDs) and biological agents are critical in preventing the severe complications of rheumatoid arthritis (RA). However, the outcome of treatment with these drugs in RA patients is quite variable and unpredictable. Drug-metabolizing enzymes (dihydrofolate reductase, cytochrome P450enzymes, N-acetyltransferases, etc.), drug transporters (ATP-binding cassette transporters), and drug targets (tumor necrosis factor-α receptors) are coded for by variant alleles. These gene polymorphisms may influence the pharmacokinetics, pharmacodynamics, and side effects of medicines. The cause for differences in efficacy and adverse drug reactions may be genetic variation in drug metabolism among individuals. Polymorphisms in drug transporter genes may change the distribution and excretion of medicines, and the sensitivity of the targets to drugs is strongly influenced by genetic variations. In this article, we review the genetic polymorphisms that affect the efficacy of DMARDs or the occurrence of adverse drug reactions associated with DMARDs in RA. © Lippincott Williams & Wilkins. Source

Zuo X.,Anhui Medical University | Zuo X.,Fudan University | Zuo X.,State Key Laboratory Incubation of Dermatology | Zuo X.,Key Laboratory of Dermatology | And 126 more authors.
Nature Communications | Year: 2015

Genome-wide association studies (GWASs) have reproducibly associated ∼40 susceptibility loci with psoriasis. However, the missing heritability is evident and the contributions of coding variants have not yet been systematically evaluated. Here, we present a large-scale whole-exome array analysis for psoriasis consisting of 42,760 individuals. We discover 16 SNPs within 15 new genes/loci associated with psoriasis, including C1orf141, ZNF683, TMC6, AIM2, IL1RL1, CASR, SON, ZFYVE16, MTHFR, CCDC129, ZNF143, AP5B1, SYNE2, IFNGR2 and 3q26.2-q27 (P<5.00 × 10-08). In addition, we also replicate four known susceptibility loci TNIP1, NFKBIA, IL12B and LCE3D-LCE3E. These susceptibility variants identified in the current study collectively account for 1.9% of the psoriasis heritability. The variant within AIM2 is predicted to impact protein structure. Our findings increase the number of genetic risk factors for psoriasis and highlight new and plausible biological pathways in psoriasis. © 2015 Macmillan Publishers Limited. All rights reserved. Source

Wang W.-J.,Anhui Medical University | Wang W.-J.,Key Laboratory of Dermatology | Wang W.-J.,State Key Laboratory Incubation of Dermatology | Yin X.-Y.,Anhui Medical University | And 20 more authors.
Journal of the European Academy of Dermatology and Venereology | Year: 2013

Background Psoriasis is a common chronic inflammatory skin disease. IL23/Th17 is a newly confirmed pathway in psoriasis. Objective To investigate the gene-gene interactions in IL23/Th17 pathway underlying psoriasis. Methods A total of 299 single-nucleotide polymorphisms from 11 genes in IL23/Th17 pathway were genotyped on 1139 patients with psoriasis and 1694 controls. Multifactor dimensionality reduction and logistic regression algorithms were applied to explore the gene-gene interactions. Results We found that there were a three-way interaction among IL21, CCR4 and TNF(χ2 = 5.02(1), P = 0.025) and three pair-wise gene-gene interactions between IL12RB1 and CCR4(χ2 = 11.66(4), P = 0.0201), IL22 and CCR4 (χ2 = 11.97(4), P = 0.0176), IL12RB1 and IL6 (χ2 = 7.31(1), P = 0.0069) in psoriasis. Conclusions Our results might be helpful for explaining the missing heritability of the psoriasis due to epistasis and provide a deep insight into the important role of the IL23/Th17 pathway in the pathogenesis of psoriasis. © 2012 European Academy of Dermatology and Venereology. Source

Yin X.-Y.,Anhui Medical University | Yin X.-Y.,Key Laboratory of Dermatology | Yin X.-Y.,Key Laboratory of Dermatology Incubation | Cheng H.,Anhui Medical University | And 20 more authors.
Journal of Dermatological Science | Year: 2013

Background: Psoriasis is a common multi-factorial skin disease, in which gene-gene and gene-environment interactions may affect the onset, manifestation and clinical course. Objective: To investigate the underlying gene-environment interaction among several established susceptibility genes, cigarette smoking and alcohol intake. Methods: Using a two-stage case-control design, we searched for pairwise interactions between cigarette smoking and alcohol intake respectively with 9 single nucleotide polymorphisms (SNPs) at ERAP1, PTTG1, CSMD1, GJB2, SERPINB8, ZNF816A and TNIP1/ANXA6 that have been associated with risk for psoriasis in 7,223 subjects. Multiple logistic regression analysis was used for data analysis. Results: Significant interactions were found for alcohol intake with rs3762999 (p=0.0257) and rs999556 (p=0.0071) at TNIP/ANXA6; and for cigarette smoking with rs7007032 (p=0.0023) and rs10088247 (p=0.0023) at CSMD1. Conclusion: This study provides empirical evidence for the gene-environment interactions between TNIP1/ANXA6 and alcohol use, CSMD1 and cigarette smoking, highlighting the importance of gene-environment interactions in the pathogenesis of psoriasis. © 2013 Japanese Society for Investigative Dermatology. Source

Hu W.,Anhui Medical University | Hu W.,Key Laboratory of Dermatology | Sun L.,Anhui Medical University | Sun L.,Key Laboratory of Dermatology | And 31 more authors.
Rheumatology International | Year: 2011

Systemic lupus erythematosus (SLE) is a multi-system autoimmune disease with complex genetic inheritance. IKZF1 was established as a new susceptibility gene for SLE in a recent genome-wide association study (GWAS) in Chinese Han population. In order to examine whether expression levels of IKZF1 contribute to the pathogenesis of SLE, we estimated IKZF1 mRNA expression levels in peripheral blood mononuclear cells (PBMCs) via fluorescent quantitative reverse transcription polymerase chain reaction (RT-PCR) in 60 patients with SLE and 60 controls. We also explored whether the IKZF1 mRNA expression levels are associated with the variant of the SNP rs4917014 and the SLE Disease Activity Index (SLEDAI). The expression levels of IKZF1 mRNA in patients with SLE were significantly decreased compared with those in healthy controls (P < 0.001). No significant differences were found between IKZF1 mRNA expression levels and SLEDAI scores, SNP rs4917014. Our results suggest that decreased expression of IKZF1 mRNA may be correlated with the pathogenesis of SLE. © 2010 Springer-Verlag. Source

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