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Liu J, Liao MQ, Cao DF, Yang Y, Yang Y, Liu YH, Zeng FF, Chen XH. The Association between Interleukin-6 Gene Polymorphisms and Risk of Systemic Lupus Erythematosus: A Meta-analysis with Trial Sequential Analysis. Immunol Invest 2020; 50:259-272. [PMID: 32573290 DOI: 10.1080/08820139.2020.1769646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
BACKGROUND Molecular epidemiological studies have sought associations between interleukin-6 (IL-6) polymorphisms and the risk of systemic lupus erythematosus (SLE); however, the results are controversial. Therefore, we conducted a meta-analysis with trial sequential analysis to evaluate a more accurate estimation of the associations. METHODS Published literatures reporting the relationships of two IL-6 polymorphisms (G-174C and G-572C) and SLE risk were retrieved from electronic databases such as PubMed and EMBASE. The most appropriate genetic model was chosen for each polymorphism. Odds ratios (ORs) and 95% confidence intervals (CIs) were calculated. Trial sequential analysis (TSA) was introduced to assess the information size and the positive results. RESULTS With 17 studies (2780 cases and 3100 controls) included, a dominant association (CC+GC vs. GG) was suggested for G-174C polymorphism, and compared with the GG genotype, the CC+GC genotype of G-174C was associated with a decreased SLE risk (OR = 0.71; 95% CI = 0.56-0.88, P =.02). No association was found for G-572C under all genetic models (e.g. OR and 95%CI for CC+GC vs. GG: 0.89, 0.73-1.08, P =.22). Subgroup analyses indicated that SLE risk decreased in G-174C polymorphism by subgroups of Caucasian population, publications after 2010, studies with high quality, and studies complied with Hardy-Weinberg equilibrium (HWE). TSA suggested that the sample sizes used for G-572C were insufficient. CONCLUSION We found that the minor allele C of IL6G-174C polymorphism is a protective factor in SLE. Further studies with a larger sample size are needed to confirm the null association for G-572C.
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Affiliation(s)
- Jun Liu
- Preventive Medicine Experimental Teaching Center, Zunyi Medical University , Zunyi, Guizhou, China
| | - Min-Qi Liao
- Department of Epidemiology, School of Medicine, Jinan University , Guangzhou, China
| | - Da-Fang Cao
- Department of Dermatology, Affiliated Hospital of Zunyi Medical University , Zunyi, Guizhou, China
| | - Ying Yang
- Department of Dermatology, Affiliated Hospital of Zunyi Medical University , Zunyi, Guizhou, China
| | - Ying Yang
- Department of Dermatology, Affiliated Hospital of Zunyi Medical University , Zunyi, Guizhou, China
| | - Yan-Hua Liu
- Department of Nutrition, The First Affiliated Hospital of Zhengzhou University , Zhengzhou, Henan, China
| | - Fang-Fang Zeng
- Department of Epidemiology, School of Medicine, Jinan University , Guangzhou, China
| | - Xiao-Hong Chen
- Department of Dermatology, Affiliated Hospital of Zunyi Medical University , Zunyi, Guizhou, China
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Katkam SK, Rajasekhar L, Kumaraswami K, Kutala VK. Association of IL -6 -174 G>C polymorphism with the risk of SLE among south Indians: evidence from case-control study and meta-analysis. Lupus 2017; 26:1491-1501. [PMID: 28530463 DOI: 10.1177/0961203317711010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Cytokines play a direct role in disease pathogenesis of systemic lupus erythematosus (SLE). Elevated levels of serum IL-6 are well documented with the disease activity and anti-dsDNA antibodies in SLE. The 5' promoter region of the IL-6 gene has been shown to play a significant role in the regulation of gene expression. In view of this, the current study aimed to investigate the possible association of 5' promoter polymorphisms G-597A (rs1800797), G-572C (rs1800796) and G-174C (rs1800795) with the risk of SLE. Analysis of 468 subjects (202 SLE patients and 266 controls) showed a significant association of the -174 G/C variant with the SLE risk in both dominant and recessive model (odds ratio (OR) 3.20, 95% confidence interval (CI) 1.18-8.69, P = 0.020 and OR 2.02, 95% CI 1.35-3.02, P = 0.0005), respectively. The 'G allele of the -174 loci (OR 1.97, 95% CI 1.39-2.78, P = 0.00012) has shown significant distribution between the cases and controls. The haplotype analysis revealed that AGG haplotype carriers are more frequent in cases than controls and found a significant positive association (OR 1.394, 95% CI 1.07-7.12, P = 0.028) with SLE. In addition, we also undertook a meta-analysis on 13 study groups for -174 G/C, comprising a total of 1585 cases and 1690 controls. The pooled OR also suggested a significant association of -174 G/C with SLE (OR 1.36, 95% CI 1.22-1.53, P < 0.05). In conclusion, the presence of the G allele at the IL-6 polymorphic promoter loci -174 is a risk factor and might influence SLE disease and pathogenesis. Meta-analysis has also suggested the overall correlation between -174 G/C polymorphism and SLE risk.
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Affiliation(s)
- S K Katkam
- 1 Department of Clinical Pharmacology and Therapeutics, Nizam's Institute of Medical Sciences (NIMS), Hyderabad, India
| | - L Rajasekhar
- 2 Department of Rheumatology, Nizam's Institute of Medical Sciences (NIMS), Hyderabad, India
| | - K Kumaraswami
- 2 Department of Rheumatology, Nizam's Institute of Medical Sciences (NIMS), Hyderabad, India
| | - V K Kutala
- 1 Department of Clinical Pharmacology and Therapeutics, Nizam's Institute of Medical Sciences (NIMS), Hyderabad, India
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Su H, Lei CT, Zhang C. Interleukin-6 Signaling Pathway and Its Role in Kidney Disease: An Update. Front Immunol 2017; 8:405. [PMID: 28484449 PMCID: PMC5399081 DOI: 10.3389/fimmu.2017.00405] [Citation(s) in RCA: 317] [Impact Index Per Article: 45.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Accepted: 03/22/2017] [Indexed: 12/19/2022] Open
Abstract
Interleukin-6 (IL-6) is a pleiotropic cytokine that not only regulates the immune and inflammatory response but also affects hematopoiesis, metabolism, and organ development. IL-6 can simultaneously elicit distinct or even contradictory physiopathological processes, which is likely discriminated by the cascades of signaling pathway, termed classic and trans-signaling. Besides playing several important physiological roles, dysregulated IL-6 has been demonstrated to underlie a number of autoimmune and inflammatory diseases, metabolic abnormalities, and malignancies. This review provides an overview of basic concept of IL-6 signaling pathway as well as the interplay between IL-6 and renal-resident cells, including podocytes, mesangial cells, endothelial cells, and tubular epithelial cells. Additionally, we summarize the roles of IL-6 in several renal diseases, such as IgA nephropathy, lupus nephritis, diabetic nephropathy, acute kidney injury, and chronic kidney disease.
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Affiliation(s)
- Hua Su
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chun-Tao Lei
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chun Zhang
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Cui YX, Fu CW, Jiang F, Ye LX, Meng W. Association of the interleukin-6 polymorphisms with systemic lupus erythematosus: a meta-analysis. Lupus 2015; 24:1308-17. [PMID: 26038346 DOI: 10.1177/0961203315588971] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Accepted: 05/06/2015] [Indexed: 12/25/2022]
Abstract
BACKGROUND Interleukin (IL)-6, an important proinflammatory cytokine, plays a potential pathological role in systemic lupus erythematosus (SLE). Studies on the relationship of IL-6 gene polymorphisms with SLE are inconclusive. The aim of this study was to estimate the relationship more precisely. METHODS The databases of PubMed and Web of Science updated to 30 August 2014 were retrieved. Meta-analysis was conducted using allelic contrast, dominant, recessive and homozygote contrast models. Fifteen studies were included in this study and ethnicity-specific meta-analysis was performed on European, Iranian and Asian populations. RESULTS Analysis for the IL-6-174 G/C polymorphism under all models except the homozygote contrast model indicated an association in the overall population (allelic contrast model: odds ratio (OR) 1.428, 95% confidence interval (CI) 1.124-1.812, dominant model: OR 1.382, 95% CI 1.037-1.842, recessive model: OR 1.610, 95% CI 1.158-2.240, homozygote contrast model: OR 1.759, 95% CI 0.989-3.127), as well as in European individuals under all four genetic models (allelic contrast model: OR 1.557, 95% CI 1.155-2.098, dominant model: OR 1.699, 95% CI 1.203-2.400, recessive model: OR 1.506, 95% CI 1.176-1.930, homozygote contrast model: OR 2.118, 95% CI 1.103-4.065). Analysis for the IL-6-572 G/C polymorphism indicated significant association in overall ethnicities under the recessive model (OR 1.491, 95% CI 1.104-2.014), but not under other models or in Asian individuals. In addition, significant association between the IL-6-174 G/C polymorphism and discoid skin lesions and antinuclear antibodies (ANAs) were found under the allelic contrast model and recessive model, respectively (discoid skin lesions: OR 2.271, 95% CI 1.053-4.895; ANAs: OR 2.244, 95% CI 1.141-4.416). CONCLUSION This meta-analysis provides evidence of the association between the IL-6 polymorphism and the risk of SLE, hinting that the IL-6-174 G/C and IL-6-572 G/C polymorphisms may play a role in SLE susceptibility.
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Affiliation(s)
- Y X Cui
- Department of Epidemiology & Key Laboratory of Public Health Safety of Ministry of Education, School of Public Health, Fudan University, Shanghai, China
| | - C W Fu
- Department of Epidemiology & Key Laboratory of Public Health Safety of Ministry of Education, School of Public Health, Fudan University, Shanghai, China
| | - F Jiang
- Department of Epidemiology & Key Laboratory of Public Health Safety of Ministry of Education, School of Public Health, Fudan University, Shanghai, China
| | - L X Ye
- Department of Epidemiology & Key Laboratory of Public Health Safety of Ministry of Education, School of Public Health, Fudan University, Shanghai, China
| | - W Meng
- Department of Epidemiology & Key Laboratory of Public Health Safety of Ministry of Education, School of Public Health, Fudan University, Shanghai, China
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Salim PH, Xavier RM. Influência dos polimorfismos genéticos (IL10/CXCL8/CXCR2/ NFκB) na susceptibilidade das doenças reumatológicas autoimunes. REVISTA BRASILEIRA DE REUMATOLOGIA 2014; 54:301-10. [DOI: 10.1016/j.rbr.2013.10.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2013] [Accepted: 10/21/2013] [Indexed: 01/02/2023] Open
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da Silva HDA, da Silva AP, da Silva HA, Asano NMJ, Maia MDMD, de Souza PRE. Interferon gamma and Interleukin 10 polymorphisms in Brazilian patients with systemic lupus erythematosus. Mol Biol Rep 2014; 41:2493-500. [PMID: 24443230 DOI: 10.1007/s11033-014-3106-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2013] [Accepted: 01/06/2014] [Indexed: 10/25/2022]
Abstract
The pathogenesis of systemic lupus erythematosus (SLE) is complex, with several susceptibility genes and environmental factors involved in its development and clinical manifestation. Currently, there is a great amount of interest in the identification of biomarkers, as cytokines, that can quantify the susceptibility of SLE, the risk of future organ involvement, and association of their changes with disease activity. To investigate the associations between polymorphisms in the gene of Interferon gamma (IFN-γ) and in the promoter of the Interleukin-10 (IL-10) gene and SLE. The polymorphisms +874 T/A (rs2430561) in the IFN-γ gene and -1082G/A (rs1800896) in the IL-10 promoter were determined in 99 SLE patients and 100 healthy controls among women Brazilian using the refractory mutation system polymerase chain reaction method. Disease activity was assessed using the SLE activity index. There were significant differences in the distribution of the genotype T/A in IFN-γ gene polymorphism (+874) (χ (2) = 7.168; P = 0.0074) and the genotype G/A in IL-10 promoter polymorphism (-1082) (χ (2) = 4.654; P = 0.0310) between the SLE and control groups. However, no association was observed between clinical features and the polymorphisms studied. This study presents preliminary evidence for association between IL-10 and IFN-γ polymorphism and SLE susceptibility, but not with clinical features in a Northeast population from Brazil.
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7
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Yap DYH, Lai KN. The role of cytokines in the pathogenesis of systemic lupus erythematosus - from bench to bedside. Nephrology (Carlton) 2013; 18:243-55. [PMID: 23452295 DOI: 10.1111/nep.12047] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/10/2013] [Indexed: 12/23/2022]
Abstract
The pathogenesis of systemic lupus erythematosus (SLE) entails a complex interaction between the different arms of the immune system. While autoantibodies production and immune complex deposition are cornered as hallmark features of SLE, there is growing evidence to propose the pathogenic role of cytokines in this disease. Examples of these cytokines include BLys, interleukin-6, interleukin-17, interleukin-18, type I interferons and tumour necrosis factor alpha. These cytokines all assume pivotal functions to orchestrate the differentiation, maturation and activation of various cell types, which would mediate local inflammatory process and tissue injury. The knowledge on these cytokines not only fosters our understanding of the disease, but also provides insights in devising biomarkers and targeted therapies. In this review, we focus on cytokines which have substantial pathogenic significance and also highlight the possible clinical applications of these cytokines.
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Affiliation(s)
- Desmond Yat Hin Yap
- Division of Nephrology, Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong SAR
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Hristova M, Dourmishev L, Kamenarska Z, Nikolova S, Kaneva R, Vinkov A, Baleva M, Monova D, Mitev V. Role of the promoter polymorphism IL-6 -174G/C in dermatomyositis and systemic lupus erythematosus. BIOMED RESEARCH INTERNATIONAL 2013; 2013:315365. [PMID: 24106699 PMCID: PMC3784074 DOI: 10.1155/2013/315365] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Revised: 07/29/2013] [Accepted: 08/12/2013] [Indexed: 02/02/2023]
Abstract
The promoter polymorphism -174G/C within the interleukin-6 gene (IL-6) has been reported to have a functional importance through the modulation of IL-6 gene expression in vitro and in vivo. IL-6 is thought to play an important role in autoimmune diseases and the effect of its receptor inhibitor-tocilizumab-has been recently studied. The aim of this case-control study was to investigate the association between the interleukin-6 -174G/C single nucleotide polymorphism and the susceptibility to dermatomyositis (DM) and systemic lupus erythematosus (SLE) in Bulgarian patients. Altogether, 87 patients-52 with SLE and 35 with DM-as well as 80 unrelated healthy controls were included in this study. All of them were analyzed by restriction fragment length polymorphism analysis (RFLP). The GG genotype and the G allele appeared to be associated with SLE, especially in women. None of the genotypes showed an association with DM. However, the G allele appeared to be associated with muscle weakness and it is a risk factor for elevated muscle enzymes. Our results indicate that IL-6 -174G/C polymorphism might be associated with the susceptibility to SLE especially in women. Although it is not associated with DM, it seems that IL-6 -174G/C polymorphism could modulate some clinical features in the autoimmune myopathies.
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Affiliation(s)
- Maria Hristova
- Department of Clinical Laboratory and Clinical Immunology, Medical University-Sofia, 1 Georgi Sofijski Street, 1431 Sofia, Bulgaria
| | - Lyubomir Dourmishev
- Department of Dermatology and Venereology, Medical University-Sofia, 1 Georgi Sofijski Street, 1431 Sofia, Bulgaria
| | - Zornitsa Kamenarska
- Molecular Medicine Center, Medical University-Sofia, 2 Zdrave Street, 1431 Sofia, Bulgaria
- Department of Medical Chemistry and Biochemistry, Medical University-Sofia, 2 Zdrave Street, 1431 Sofia, Bulgaria
| | - Svetla Nikolova
- Molecular Medicine Center, Medical University-Sofia, 2 Zdrave Street, 1431 Sofia, Bulgaria
- Department of Medical Chemistry and Biochemistry, Medical University-Sofia, 2 Zdrave Street, 1431 Sofia, Bulgaria
| | - Radka Kaneva
- Molecular Medicine Center, Medical University-Sofia, 2 Zdrave Street, 1431 Sofia, Bulgaria
- Department of Medical Chemistry and Biochemistry, Medical University-Sofia, 2 Zdrave Street, 1431 Sofia, Bulgaria
| | - Anton Vinkov
- 28 Diagnostic and Consultative Center-Sofia, 1 Iliya Beshkov Street, 1592 Sofia, Bulgaria
| | - Marta Baleva
- Department of Clinical Laboratory and Clinical Immunology, Medical University-Sofia, 1 Georgi Sofijski Street, 1431 Sofia, Bulgaria
| | - Daniela Monova
- Department of Nephrology, Ministry of Interior Hospital, 79 Skobelev Boulevard, 1606 Sofia, Bulgaria
| | - Vanio Mitev
- Molecular Medicine Center, Medical University-Sofia, 2 Zdrave Street, 1431 Sofia, Bulgaria
- Department of Medical Chemistry and Biochemistry, Medical University-Sofia, 2 Zdrave Street, 1431 Sofia, Bulgaria
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Yang Z, Liang Y, Qin B, Zhong R. A meta-analysis of the association of IL-6 −174 G/C and −572 G/C polymorphisms with systemic lupus erythematosus risk. Rheumatol Int 2013; 34:199-205. [DOI: 10.1007/s00296-013-2855-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2012] [Accepted: 08/28/2013] [Indexed: 12/29/2022]
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Asano NM, Angelo HD, da Silva HA, Maia MM, Lins OG, Souza PE. Interleukin-6 promoter polymorphisms −174 G/C in Brazilian patients with systemic lupus erythematosus. Hum Immunol 2013; 74:1153-6. [DOI: 10.1016/j.humimm.2013.05.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2012] [Revised: 05/01/2013] [Accepted: 05/29/2013] [Indexed: 12/26/2022]
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Azkalany GS, Gheita TA, Gaber W, Mohey A. Clinical significance of serum TNFα and -308 G/A promoter polymorphism and serum Il-6 and -174 G/C promoter polymorphism in systemic lupus erythematosus patients. EGYPTIAN RHEUMATOLOGIST 2012. [DOI: 10.1016/j.ejr.2012.05.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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12
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Lee YH, Lee HS, Choi SJ, Ji JD, Song GG. The association between interleukin-6 polymorphisms and systemic lupus erythematosus: a meta-analysis. Lupus 2011; 21:60-7. [PMID: 22004976 DOI: 10.1177/0961203311422711] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The aim of this study was to determine whether the functional interleukin-6 (IL-6) promoter -174 G/C and -572 G/C polymorphisms confer susceptibility to systemic lupus erythematosus (SLE) in ethnically different populations. Meta-analysis was conducted on the associations between the IL-6 polymorphisms and SLE using; 1) allele contrast, 2) the recessive model, 3) the dominant model, and 4) the additive model. A total of 11 studies were considered in this study, and ethnicity-specific meta-analysis was performed on European and Asian populations. Meta-analysis of the IL-6 -174 G/C polymorphism showed an association between SLE and the IL-6 -174 G allele in all study subjects (odds ratio (OR) = 1.344, 95% confidence interval (CI) = 1.052-1.718, p = 0.018). Furthermore, stratification by ethnicity indicated an association between the IL-6 -174 G allele and SLE in Europeans (OR = 1.264, 95% CI = 1.037-1.541, p = 0.020). Meta-analysis of the IL-6 -572 G/C polymorphism revealed that an association was found between SLE and the IL-6 -572 G/C polymorphism using the recessive model, but ethnicity-specific meta-analysis revealed no association between SLE and the IL-6 -572 G/C polymorphism in Asians. In conclusion, this meta-analysis demonstrates that the IL-6 -174 G/C polymorphism may confer susceptibility to SLE in Europeans, but that the IL-6 -572 G/C polymorphism is not associated with susceptibility to SLE in Asians.
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Affiliation(s)
- Y H Lee
- Division of Rheumatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea.
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Genetic risk factors of systemic lupus erythematosus in the Malaysian population: a minireview. Clin Dev Immunol 2011; 2012:963730. [PMID: 21941582 PMCID: PMC3176625 DOI: 10.1155/2012/963730] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2011] [Accepted: 07/20/2011] [Indexed: 12/27/2022]
Abstract
SLE is an autoimmune disease that is not uncommon in Malaysia. In contrast to Malays and Indians, the Chinese seem to be most affected. SLE is characterized by deficiency of body's immune response that leads to production of autoantibodies and failure of immune complex clearance. This minireview attempts to summarize the association of several candidate genes with risk for SLE in the Malaysian population and discuss the genetic heterogeneity that exists locally in Asians and in comparison with SLE in Caucasians. Several groups of researchers have been actively investigating genes that are associated with SLE susceptibility in the Malaysian population by screening possible reported candidate genes across the SLE patients and healthy controls. These candidate genes include MHC genes and genes encoding complement components, TNF, FcγR, T-cell receptors, and interleukins. However, most of the polymorphisms investigated in these genes did not show significant associations with susceptibility to SLE in the Malaysian scenario, except for those occurring in MHC genes and genes coding for TNF-α, IL-1β, IL-1RN, and IL-6.
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Abbas D, Hamdy E, Helal MM. Promoter region polymorphism (−174 G/C) of interleukin-6 gene and SLE; are they associated? EGYPTIAN RHEUMATOLOGIST 2011. [DOI: 10.1016/j.ejr.2011.03.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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Chou IC, Lin WD, Wang CH, Tsai CH, Li TC, Tsai FJ. Interleukin (IL)-1beta, IL-1 receptor antagonist, IL-6, IL-8, IL-10, and tumor necrosis factor alpha gene polymorphisms in patients with febrile seizures. J Clin Lab Anal 2011; 24:154-9. [PMID: 20486195 DOI: 10.1002/jcla.20374] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Inflammation and genetics may play a role in the pathogenesis of febrile seizures (FSs). We aimed to test whether interleukin-1beta (IL-1beta), IL-1 receptor antagonist (IL-1 Ra), IL-6 promoter, IL-8, IL-10, or tumor necrosis factor (TNF) gene polymorphisms could be used as markers of susceptibility to FSs. An association study was performed among a cohort of 104 patients with FSs and 143 normal control subjects. There was no significant difference between patients and controls in the distribution of allele frequencies of the IL-1beta promoter, IL-1beta exon 5, IL-6 promoter, IL-8, IL-10, or TNF-alpha gene polymorphisms. In contrast, the IL-1 Ra-I homozygote was more frequent in patients with FSs than in healthy controls (93.2% vs. 83.92%, chi(2)=4.51, P=0.034). In addition, individuals homozygous for the IL-1 Ra-I genotype were more than twice as likely to develop FSs than individuals heterozygous for the IL-1 Ra-I/II genotype (OR, 2.63, 95% CI: 1.08-6.39; chi(2)=4.55, P=0.033). We conclude that the IL-1 Ra gene might be one of the useful markers for predicting susceptibility to FSs.
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Affiliation(s)
- I-Ching Chou
- Children's Medical Center, China Medical University Hospital, Taichung, Taiwan
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Sandling JK, Garnier S, Sigurdsson S, Wang C, Nordmark G, Gunnarsson I, Svenungsson E, Padyukov L, Sturfelt G, Jönsen A, Bengtsson AA, Truedsson L, Eriksson C, Rantapää-Dahlqvist S, Mälarstig A, Strawbridge RJ, Hamsten A, Criswell LA, Graham RR, Behrens TW, Eloranta ML, Alm G, Rönnblom L, Syvänen AC. A candidate gene study of the type I interferon pathway implicates IKBKE and IL8 as risk loci for SLE. Eur J Hum Genet 2010; 19:479-84. [PMID: 21179067 PMCID: PMC3060320 DOI: 10.1038/ejhg.2010.197] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Systemic Lupus Erythematosus (SLE) is a systemic autoimmune disease in which the type I interferon pathway has a crucial role. We have previously shown that three genes in this pathway, IRF5, TYK2 and STAT4, are strongly associated with risk for SLE. Here, we investigated 78 genes involved in the type I interferon pathway to identify additional SLE susceptibility loci. First, we genotyped 896 single-nucleotide polymorphisms in these 78 genes and 14 other candidate genes in 482 Swedish SLE patients and 536 controls. Genes with P<0.01 in the initial screen were then followed up in 344 additional Swedish patients and 1299 controls. SNPs in the IKBKE, TANK, STAT1, IL8 and TRAF6 genes gave nominal signals of association with SLE in this extended Swedish cohort. To replicate these findings we extracted data from a genomewide association study on SLE performed in a US cohort. Combined analysis of the Swedish and US data, comprising a total of 2136 cases and 9694 controls, implicates IKBKE and IL8 as SLE susceptibility loci (Pmeta=0.00010 and Pmeta=0.00040, respectively). STAT1 was also associated with SLE in this cohort (Pmeta=3.3 × 10−5), but this association signal appears to be dependent of that previously reported for the neighbouring STAT4 gene. Our study suggests additional genes from the type I interferon system in SLE, and highlights genes in this pathway for further functional analysis.
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Affiliation(s)
- Johanna K Sandling
- Molecular Medicine, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
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Interleukin-6 gene polymorphism in Iranian patients with systemic lupus erythematosus. Clin Rheumatol 2010; 30:179-84. [DOI: 10.1007/s10067-010-1452-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2009] [Revised: 03/17/2010] [Accepted: 03/24/2010] [Indexed: 12/20/2022]
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Chua KH, Kee BP, Tan SY, Lian LH. Interleukin-6 promoter polymorphisms (-174 G/C) in Malaysian patients with systemic lupus erythematosus. Braz J Med Biol Res 2010; 42:551-5. [PMID: 19448905 DOI: 10.1590/s0100-879x2009000600012] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2008] [Accepted: 12/11/2008] [Indexed: 11/21/2022] Open
Abstract
Systemic lupus erythematosus (SLE) is a chronic autoimmune disease that involves the inflammation of various organs upon deposition of immune complexes and is characterized by uncontrolled B cell hyperactivity. Despite intensive research on the etiology of the disease, the exact cause of the onset of SLE is unknown. The pathogenesis of the disease has been proposed to be associated with the imbalance of T helper type 1 (Th1) and Th2 cytokine activities. Elevated serum levels of interleukin-6 (IL-6), a Th2 cytokine with various functions in the regulation of human biological systems, are observed in SLE patients. In the present study, 100 Malaysian SLE patients and 100 controls were evaluated in order to determine the association of polymorphisms existing in the promoter region of the IL-6 gene with the onset of SLE. The homozygous G genotype was found to be significant in SLE patients (chi(2) = 33.754; P = 0.00000000625), whereas the heterozygous G/C genotype was significant in the controls (chi(2)= 25.087; P = 0.000000548). We suggest that the C allele might have a masking effect on the G allele when both alleles are present in heterozygous individuals. However, we did not observe any significant association of the homozygous C allele with the onset of SLE or with protection from the disease (chi(2) = 1.684; P = 0.194366).
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Affiliation(s)
- K H Chua
- Department of Molecular Medicine, University of Malaya, Kuala Lumpur, Malaysia.
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Li Y, Liang WB, Li C, Gao LB, Zhou B, Wang YY, Lv ML, Song YP, Zhang L. The Association Between Interleukin-23 Receptor Gene Polymorphisms and Systemic Lupus Erythematosus. DNA Cell Biol 2010; 29:79-82. [PMID: 19895338 DOI: 10.1089/dna.2009.0913] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Yi Li
- Laboratory of Molecular Translational Medicine, West China Second University Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Wei-Bo Liang
- Department of Forensic Biology, West China School of Preclinical and Forensic Medicine; Sichuan University, Chengdu, People's Republic of China
| | - Cui Li
- Department of Forensic Biology, West China School of Preclinical and Forensic Medicine; Sichuan University, Chengdu, People's Republic of China
| | - Lin-Bo Gao
- Department of Forensic Biology, West China School of Preclinical and Forensic Medicine; Sichuan University, Chengdu, People's Republic of China
| | - Bin Zhou
- Laboratory of Molecular Translational Medicine, West China Second University Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Yan-Yun Wang
- Department of Immunology, West China School of Preclinical and Forensic Medicine; Sichuan University, Chengdu, People's Republic of China
| | - Mei-Li Lv
- Department of Immunology, West China School of Preclinical and Forensic Medicine; Sichuan University, Chengdu, People's Republic of China
| | - Ya-Ping Song
- Laboratory of Molecular Translational Medicine, West China Second University Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Lin Zhang
- Laboratory of Molecular Translational Medicine, West China Second University Hospital, Sichuan University, Chengdu, People's Republic of China
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