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Abstract
BACKGROUND Allergic rhinitis (AR) is an allergic disease of nasal mucosa. LncRNAs are key modulators affecting AR development. Neverthelss, the impact of lncRNA ANRIL in AR is not clear. OBJECTIVE This work decided to study the mechanism underlying the impact of ANRIL on TLR4 expression through targeting miR-16-5p during autophagy and epithelial barrier dysfunction in the progression of AR. METHODS Human nasal epithelial cells were exposed to TNF-α to establish AR cell model, AR mice model was constructed by ovalbumin (OVA) treatment. QRT-PCR or western blot assays were applied to measure the levels of mRNA and proteins. Dual-luciferase reporter gene detection and RIP assay were conducted to verify the association between ANRIL and miR-16-5p. Autophagy flux assessment by mRFP-GFP-LC3 method was performed to detect autophagy level. RESULTS AR progression could induce the autophagy, and the expressions of tight junction proteins were downregulated in AR cell model. Moreover, knockdown of ANRIL reversed the effect of AR on autophagy-related protein and tight junction proteins MiR-16-5p was found to be bound with ANRIL and miR-16-5p inhibitor could reverse ANRIL knockdown-induced downregulation of autophagy-related proteins and epithelial barrier dysfunction. In addition, miR-16-5p directly targeted TLR4. Furthermore, knockdown of ANRIL reversed miR-16-5p and TLR4 expression, autophagy level, and tight junction protein levels in nasal mucosa of AR mice. CONCLUSION This study illustrated that ANRIL acted as a promotion factor in AR induced autophagy and epithelial barrier dysfunction by enhancing the expression of TLR4 via interacting with miR-16-5p.
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Affiliation(s)
- Mei-Qun Wang
- Department of Otorhinolaryngology Head and Neck Surgery, the Second Affiliated Hospital of Nanchang University, Nanchang, P. R. China
| | - Xin-Hua Zhu
- Department of Otorhinolaryngology Head and Neck Surgery, the Second Affiliated Hospital of Nanchang University, Nanchang, P. R. China
| | - Ke Liu
- Department of Otorhinolaryngology Head and Neck Surgery, the Second Affiliated Hospital of Nanchang University, Nanchang, P. R. China
| | - Xiao-Yan Tian
- Department of Otorhinolaryngology Head and Neck Surgery, the Second Affiliated Hospital of Nanchang University, Nanchang, P. R. China
| | - Yue-Hui Liu
- Department of Otorhinolaryngology Head and Neck Surgery, the Second Affiliated Hospital of Nanchang University, Nanchang, P. R. China
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Wisgrill L, Fyhrquist N, Ndika J, Paalanen L, Berger A, Laatikainen T, Karisola P, Haahtela T, Alenius H. Bet v 1 triggers antiviral-type immune signaling in birch pollen allergic individuals. Clin Exp Allergy 2022; 52:929-941. [PMID: 35147263 PMCID: PMC9540660 DOI: 10.1111/cea.14108] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 01/22/2022] [Accepted: 02/06/2022] [Indexed: 11/28/2022]
Abstract
Background In allergic patients, clinical symptoms caused by pollen remind of symptoms triggered by viral respiratory infections, which are also the main cause of asthmatic exacerbations. In patients sensitized to birch pollen, Bet v 1 is the major symptom‐causing allergen. Immune mechanisms driving Bet v 1‐related responses of human blood cells have not been fully characterized. Objective To characterize the immune response to Bet v 1 in peripheral blood in patients allergic to birch pollen. Methods The peripheral blood mononuclear cells of birch‐allergic (n = 24) and non‐allergic (n = 47) adolescents were stimulated ex‐vivo followed by transcriptomic profiling. Systems‐biology approaches were employed to decipher disease‐relevant gene networks and deconvolution of associated cell populations. Results Solely in birch‐allergic patients, co‐expression analysis revealed activation of networks of innate immunity and antiviral signalling as the immediate response to Bet v 1 stimulation. Toll‐like receptors and signal transducer transcription were the main drivers of gene expression patterns. Macrophages and dendritic cells were the main cell subsets responding to Bet v 1. Conclusions and clinical relevance In birch‐pollen‐allergic patients, the activated innate immune networks seem to be, in part, the same as those activated during viral infections. This tendency of the immune system to read pollens as viruses may provide new insight to allergy prevention and treatment.
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Affiliation(s)
- Lukas Wisgrill
- Division of Neonatology, Pediatric Intensive Care and Neuropediatrics, Comprehensive Center for Pediatrics, Medical University of Vienna, Vienna, Austria.,Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Nanna Fyhrquist
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Human microbiome research program (HUMI), Medicum, University of Helsinki, Helsinki, Finland
| | - Joseph Ndika
- Human microbiome research program (HUMI), Medicum, University of Helsinki, Helsinki, Finland
| | - Laura Paalanen
- National Institute for Health and Welfare, Helsinki, Finland; Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland
| | - Angelika Berger
- Division of Neonatology, Pediatric Intensive Care and Neuropediatrics, Comprehensive Center for Pediatrics, Medical University of Vienna, Vienna, Austria
| | - Tiina Laatikainen
- National Institute for Health and Welfare, Helsinki, Finland; Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland
| | - Piia Karisola
- Human microbiome research program (HUMI), Medicum, University of Helsinki, Helsinki, Finland
| | - Tari Haahtela
- Skin and Allergy Hospital, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Harri Alenius
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Human microbiome research program (HUMI), Medicum, University of Helsinki, Helsinki, Finland
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3
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Abstract
Nasal polyposis is a disease characterized with chronic inflammation of the nasal mucosa. Toll-like receptors (TLRs) are defined as essential receptors of the innate immune system and may play in the development of nasal polyposis. A total of 71 patients with nasal polyposis and 74 healthy controls were included in this study. Three single-nucleotide polymorphisms (SNPs); TLR2 (2258 A>G), TLR4 (896 A>G), and TLR4 (1196 C>T) were analyzed in all patients. The degree of pair-wise linkage disequilibrium and the genotype and haplotype analyses were conducted using regression in this logistic model and the Multifactor Dimensionality Reduction (MDR) software package was used to construct all possible interactions among different genotype variants belonging to the TLR gene. There was significant difference in genotype and allele frequencies of the TLR4 (1196 C>T) polymorphism between the nasal polyposis and control groups (0.017). Also, it was observed that the probability of nasal polyposis was 62.7% in the presence of TLR4 (1196 C>T) polymorphism with asthma (P = .007). As a conclusion, this study showed that TLR4 and TLR2 polymorphisms were predisposing factors for nasal polyposis. Further functional studies investigating the consequences of loss of TLR function are needed.
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Affiliation(s)
- Gülin Gökçen Kesici
- Department of ENT, 64082Ankara Atatürk Education and Research Hospital, Ankara, Turkey
| | - Selda Kargın Kaytez
- Department of ENT, 64082Ankara Education and Research Hospital, Ankara, Turkey
| | - Talih Özdaş
- Department of ENT, 64130Adana City Education and Research Hospital, Adana, Turkey
| | - Sibel Özdaş
- Department of Bioengineering, Engineering Faculty, 365074Adana Science and Technology University, Adana, Turkey
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4
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Abstract
Asthma is a chronic airway inflammatory disease that is influenced by the interplay between genetic factors and exposure to environmental allergens, microbes, or microbial products where toll-like receptors (TLRs) play a pivotal role. TLRs recognize a wide range of microbial or endogenous molecules as well as airborne environmental allergens and act as adjuvants that influence positively or negatively allergic sensitization. TLRs are qualitatively and differentially expressed on hematopoietic and non-hematopoietic stromal or structural airway cells that when activated by TLRs agonists exert an immune-modulatory role in asthma development. Therefore, understanding mechanisms and pathways by which TLRs orchestrate asthma outcomes may offer new strategies to control the disease. Here, we aim to review and critically discuss the role of TLRs in human asthma and murine models of allergic airway inflammation, highlighting the complexity of TLRs function in development, exacerbation, or control of airway allergic inflammation.
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Affiliation(s)
- Amin Zakeri
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark
| | - Momtchilo Russo
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
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5
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Abstract
BACKGROUND Several epidemiological studies have focused on the association between polymorphisms in toll-like receptors (TLRs) and asthma. However, the results remained inconclusive. METHODS We systematically reviewed the database of PubMed, EMBASE, Web of Science, CNKI, and Google scholar for all related articles on TLR polymorphisms and asthma. We used the software STATA 12.0 to conduct the meta-analysis. The heterogeneity and publication bias were examined, respectively. RESULTS Eighteen studies consisting of 3538 asthma cases and 4090 controls were selected into the meta-analysis. The pooled odds ratios (ORs) show that rs3804099 was associated with asthma in dominant model (OR = 1.51, 95% CI = 1.17-1.96, P = .002), and rs4986791 was associated with asthma in additive model (OR = 0.81, 95% CI = 0.64-1.02, P = .07) and dominant model (OR = 0.76, 95% CI = 0.60-0.97, P = .025). CONCLUSION The combined results show that rs3804099 in TLR2 and rs4986791 in TLR4 were significantly associated with asthma risk. Polymorphisms in TLRs play important roles in asthma.
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6
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LeVan TD, Smith LM, Heires AJ, Mikuls TR, Meza JL, Weissenburger-Moser LA, Romberger DJ. Interaction of CD14 haplotypes and soluble CD14 on pulmonary function in agricultural workers. Respir Res 2017; 18:49. [PMID: 28302109 PMCID: PMC5353891 DOI: 10.1186/s12931-017-0532-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Accepted: 03/07/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Agricultural environments are contaminated with organic dusts containing bacterial components. Chronic inhalation of organic dusts is implicated in respiratory diseases. CD14 is a critical receptor for gram-negative lipopolysaccharide; however, its association with respiratory disease among agricultural workers is unknown. The objective of this study was to determine if serum soluble CD14 (sCD14) levels are associated with lung function among agricultural workers and if this association is modified by genetic variants in CD14. METHODS This cross-sectional study included 584 veterans with >2 years of farming experience and that were between the ages of 40 and 80 years. Participants underwent spirometry and were genotyped for four tagging CD14 polymorphisms (CD14/-2838, rs2569193; CD14/-1720, rs2915863; CD14/-651, rs5744455; and CD14/-260, rs2569190). Serum sCD14 was assayed by ELISA. RESULTS Subjects were 98% white males with a mean age 64.5 years. High soluble CD14 levels (> median sCD14) were associated decreased lung function (FEV1/FVC, p = 0.011; % predicted FEV1, p = 0.03). When stratified by COPD (yes/no) and smoking status (ever/never), high sCD14 levels (> median sCD14) were associated with low lung function among ever smokers with COPD (% predicted FEV1, padj = 0.0008; FEV1/FVC, padj = 0.0002). A similar trend was observed for never smokers with COPD; however, results did not reach statistical significance due to small sample size. There was a significant sCD14 x COPD/smoking interaction with lung function (% predicted FEV1, pinter = 0.0498; FEV1/FVC, pinter = 0.011). Regression models were adjusted for age, body mass index, education, sex, race and years worked on a farm. No association was found between CD14 polymorphisms/haplotypes (CD14/-2838; CD14/-1720; CD14/-651; CD14/-260) and sCD14 levels. The final model included the variables sCD14 and haplotypes and a haplotype x sCD14 interaction term. Individuals with the GTTG haplotype (CD14/-2838 → CD14/-260) and high sCD14 levels (> median sCD14) had on average 6.94 lower % predicted FEV1 than individuals with the GCCA haplotype and low sCD14 levels (≤ median sCD14, padj = 0.03). CONCLUSION CD14 haplotypes and sCD14 are important mediators of lung function among those with COPD in this occupationally-exposed population.
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Affiliation(s)
- Tricia D LeVan
- Department of Epidemiology, University of Nebraska Medical Center, 985910, Omaha, NE, 68198-5910, USA. .,Department of Internal Medicine and Veterans Nebraska Western Iowa Healthcare System, Omaha, NE, USA.
| | - Lynette M Smith
- Department of Biostatistics, University of Nebraska Medical Center, Omaha, NE, USA
| | - Art J Heires
- Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Ted R Mikuls
- Department of Internal Medicine and Veterans Nebraska Western Iowa Healthcare System, Omaha, NE, USA
| | - Jane L Meza
- Department of Biostatistics, University of Nebraska Medical Center, Omaha, NE, USA
| | | | - Debra J Romberger
- Department of Internal Medicine and Veterans Nebraska Western Iowa Healthcare System, Omaha, NE, USA
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7
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Zhang R, Deng R, Li H, Chen H. No Association Between -159C/T Polymorphism of the CD14 Gene and Asthma Risk: a Meta-Analysis of 36 Case-Control Studies. Inflammation 2016; 39:457-66. [PMID: 26463530 DOI: 10.1007/s10753-015-0269-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Numerous studies have evaluated the association between -159C/T polymorphism of the CD14 gene and asthma risk; however, these studies have yielded inconsistent results. We performed meta-analyses to investigate the association between CD14-159C/T polymorphism and asthma risk. Studies were identified from PubMed, Embase, and two Chinese databases. Odds ratios (ORs) with 95 % confidence interval (CI) were used to evaluate the strength of association. Thirty-six studies were collected for meta-analysis, which involved 6954 cases and 7525 controls. In the overall populations, no significant association between the CD14-159C/T polymorphism and asthma risk was found for the dominant (OR = 0.90, 95 % CI = 0.81-1.01, P = 0.08) or other models; stratified analyses indicated that the CD14-159C/T polymorphism was not associated with asthma risk in Caucasians or Asians or adults or children. Among the atopic asthma populations, no significant results were observed in the all-combined or subgroup analyses. This meta-analysis demonstrates that the CD14-159C/T polymorphism may not be a risk factor for asthma.
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8
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Abstract
BACKGROUND It has been reported that the cluster of differentiation 14 (CD14) gene -159C/T variant may be associated with asthma risk. However, some studies yielded conflicting results. Therefore, a comprehensive meta-analysis was designed to assess the precise association. METHODS A systematic search in PubMed, Embase (Ovid), China National Knowledge Internet (CNKI), and Wan fang databases was conducted up to August 15, 2015. Odds ratio (OR) and 95% confidence interval (CI) were used to pool the effect size. We used I to assess heterogeneity, and a funnel plot and Egger test to assess publication bias. RESULTS In total, 34 studies involving 15,641 subjects were included in this meta-analysis. There was a statistically significant association between CD14 -159C/T polymorphism and asthma risk observed in dominant model (TT+TC vs CC: OR = 0.86, 95% CI = 0.77-0.97, P = 0.012) and codominant model (TC vs CC: OR = 0.88, 95% CI = 0.78-0.99, P = 0.035) in adults. However, there may be no significant association between CD14 159C/T and atopic and nonatopic asthma risk. CONCLUSION In summary, the overall results suggested that the CD14 -159C/T variant may decrease the risk of asthma susceptibility in adults. However, no significant association between CD14 159C/T and atopic and nonatopic asthma susceptibility was identified. More studies with larger sample size are needed to validate the findings from this study.
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Affiliation(s)
- Duan Wang
- West China Hospital/West China School of Medicine
| | - Yang Yang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu
| | - Jin Xu
- Tianjin Hospital, Tianjin
| | - Zong-Ke Zhou
- Department of Orthopedics, West China Hospital/West China School of Medicine, Sichuan University, Chengdu, China
- Correspondence: Zong-Ke Zhou, Department of Orthopedics, West China Hospital/West China School of Medicine, Sichuan University, Chengdu 610041, China (e-mail: ), Hai-Yang Yu, State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China (e-mail: )
| | - Hai-Yang Yu
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu
- Correspondence: Zong-Ke Zhou, Department of Orthopedics, West China Hospital/West China School of Medicine, Sichuan University, Chengdu 610041, China (e-mail: ), Hai-Yang Yu, State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China (e-mail: )
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Zeyer F, Mothes B, Will C, Carevic M, Rottenberger J, Nürnberg B, Hartl D, Handgretinger R, Beer-Hammer S, Kormann MSD. mRNA-Mediated Gene Supplementation of Toll-Like Receptors as Treatment Strategy for Asthma In Vivo. PLoS One 2016; 11:e0154001. [PMID: 27101288 PMCID: PMC4839613 DOI: 10.1371/journal.pone.0154001] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 04/06/2016] [Indexed: 01/22/2023] Open
Abstract
Asthma is the most common chronic disease in childhood. Although several therapeutic options are currently available to control the symptoms, many drugs have significant side effects and asthma remains an incurable disease. Microbial exposure in early life reduces the risk of asthma and several studies have suggested protective effects of Toll-like receptor (TLR) activation. We showed previously that modified mRNA provides a safe and efficient therapeutic tool for in vivo gene supplementation. Since current asthma drugs do not take patient specific immune and TLR backgrounds into consideration, treatment with tailored mRNA could be an attractive approach to account for the patient's individual asthma phenotype. Therefore, we investigated the effect of a preventative treatment with combinations of Tlr1, Tlr2 and Tlr6 mRNA in a House Dust Mite-induced mouse model of asthma. We used chemically modified mRNA which is-in contrast to conventional viral vectors-non-integrating and highly efficient in gene transfer. In our study, we found that treatment with either Tlr1/2 mRNA or Tlr2/6 mRNA, but not Tlr2 mRNA alone, resulted in better lung function as well as reduced airway inflammation in vivo. The present results point to a potentially protective effect of TLR heterodimers in asthma pathogenesis.
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Affiliation(s)
- Franziska Zeyer
- Department of Pediatrics I - Pediatric Infectiology and Immunology - Translational Genomics and Gene Therapy, University of Tübingen, Tübingen, Germany
| | - Benedikt Mothes
- Department of Pharmacology and Experimental Therapy and ICePhA, University of Tübingen, Tübingen, Germany
| | - Clara Will
- Department of Pediatrics I - Pediatric Infectiology and Immunology - Translational Genomics and Gene Therapy, University of Tübingen, Tübingen, Germany
| | - Melanie Carevic
- Department of Pediatrics I - Pediatric Infectiology and Immunology - Translational Genomics and Gene Therapy, University of Tübingen, Tübingen, Germany
| | - Jennifer Rottenberger
- Department of Pediatrics I - Pediatric Infectiology and Immunology - Translational Genomics and Gene Therapy, University of Tübingen, Tübingen, Germany
| | - Bernd Nürnberg
- Department of Pharmacology and Experimental Therapy and ICePhA, University of Tübingen, Tübingen, Germany
| | - Dominik Hartl
- Department of Pediatrics I - Pediatric Infectiology and Immunology - Translational Genomics and Gene Therapy, University of Tübingen, Tübingen, Germany
| | - Rupert Handgretinger
- Department of Pediatrics I - Pediatric Infectiology and Immunology - Translational Genomics and Gene Therapy, University of Tübingen, Tübingen, Germany
| | - Sandra Beer-Hammer
- Department of Pharmacology and Experimental Therapy and ICePhA, University of Tübingen, Tübingen, Germany
| | - Michael S. D. Kormann
- Department of Pediatrics I - Pediatric Infectiology and Immunology - Translational Genomics and Gene Therapy, University of Tübingen, Tübingen, Germany
- * E-mail:
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10
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Zhou J, Zhang X, Liu S, Wang Z, Chen Q, Wu Y, He Z, Huang Z. Genetic association of TLR4 Asp299Gly, TLR4 Thr399Ile, and CD14 C-159T polymorphisms with the risk of severe RSV infection: a meta-analysis. Influenza Other Respir Viruses 2016; 10:224-33. [PMID: 26901241 PMCID: PMC4814857 DOI: 10.1111/irv.12378] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/28/2016] [Indexed: 01/11/2023] Open
Abstract
Respiratory syncytial virus (RSV) is the most frequent cause of hospitalization in infants worldwide. It is recognized by Toll‐like receptor 4 (TLR 4) and cluster of differentiation 14 (CD14) in the innate immune response. Previous case–control studies reported the influence of TLR4 Asp299Gly, TLR4 Thr399Ile, and CD14 C‐159T polymorphisms on the risk of severe RSV infection. However, a decisive conclusion has not been achieved. Therefore, we performed this meta‐analysis to examine the association between these three polymorphisms and the development of RSV bronchiolitis. A systematic literature search was performed using the PubMed, EMbase, Google Scholar Search, China National Knowledge Infrastructure, China Biological Medicine, and Wanfang Databases. The data were extracted and pooled odds ratios with 95% confidence intervals were calculated under six genetic models. A total of six studies with 1009 cases and 1348 controls, three studies with 473 cases and 481 controls, or four studies with 325 cases and 650 controls relating to each of the three polymorphisms were included in this meta‐analysis. The analyzed data indicated that all of these polymorphisms were not associated with the risk of severe RSV infection. This is the first meta‐analysis to investigate the relationship of TLR4 Asp299Gly, TLR4 Thr399Ile, and CD14 C‐159T polymorphisms with the risk of severe RSV infection. Although the results of this retrospective analysis indicated a lack of the association, more extensive multicentric studies with large sample sizes are necessary to provide a more reliable estimation of the association between these three polymorphisms and RSV bronchiolitis susceptibility.
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Affiliation(s)
- Jiahui Zhou
- China-America Cancer Research Institute, Dongguan Scientific Research Center, Guangdong Medical University, Dongguan, Guangdong, China.,Key Laboratory for Medical Molecular Diagnostics of Guangdong Province, Dongguan, Guangdong, China.,Department of Pathophysiology, Guangdong Medical University, Dongguan, Guangdong, China
| | - Xiangning Zhang
- China-America Cancer Research Institute, Dongguan Scientific Research Center, Guangdong Medical University, Dongguan, Guangdong, China.,Key Laboratory for Medical Molecular Diagnostics of Guangdong Province, Dongguan, Guangdong, China.,Department of Pathophysiology, Guangdong Medical University, Dongguan, Guangdong, China
| | - Shuming Liu
- China-America Cancer Research Institute, Dongguan Scientific Research Center, Guangdong Medical University, Dongguan, Guangdong, China.,Key Laboratory for Medical Molecular Diagnostics of Guangdong Province, Dongguan, Guangdong, China.,Department of Pathophysiology, Guangdong Medical University, Dongguan, Guangdong, China
| | - Ziyou Wang
- China-America Cancer Research Institute, Dongguan Scientific Research Center, Guangdong Medical University, Dongguan, Guangdong, China.,Key Laboratory for Medical Molecular Diagnostics of Guangdong Province, Dongguan, Guangdong, China.,Department of Pathophysiology, Guangdong Medical University, Dongguan, Guangdong, China
| | - Qicong Chen
- School of Preclinical Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Yongfu Wu
- Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China
| | - Zhiwei He
- China-America Cancer Research Institute, Dongguan Scientific Research Center, Guangdong Medical University, Dongguan, Guangdong, China.,Key Laboratory for Medical Molecular Diagnostics of Guangdong Province, Dongguan, Guangdong, China.,Department of Pathophysiology, Guangdong Medical University, Dongguan, Guangdong, China
| | - Zunnan Huang
- China-America Cancer Research Institute, Dongguan Scientific Research Center, Guangdong Medical University, Dongguan, Guangdong, China.,Key Laboratory for Medical Molecular Diagnostics of Guangdong Province, Dongguan, Guangdong, China.,Department of Pathophysiology, Guangdong Medical University, Dongguan, Guangdong, China
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11
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BABADEMEZ MA, ÖZDAŞ T, ÖZDAŞ S. The common genetic variants of toll-like receptor and susceptibilityto adenoid hypertrophy: a hospital-based cohort study. Turk J Med Sci 2016; 46:1449-1458. [DOI: 10.3906/sag-1511-16] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Accepted: 01/14/2016] [Indexed: 11/03/2022] Open
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12
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Li S, Xie X, Song Y, Jiang H, Wu X, Su X, Yang L, Li M. Association of TLR4 (896A/G and 1196C/T) Gene Polymorphisms with Asthma Risk: A Meta-Analysis. Med Sci Monit 2015; 21:3591-9. [PMID: 26588249 PMCID: PMC4657762 DOI: 10.12659/msm.895380] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Background Conflicting data have been reported on the association between Toll-like receptor 4 (TLR4) +896A/G and +1196C/T polymorphisms and the risk of asthma. Therefore, we conducted this meta-analysis to clarify the effect of TLR4 +896A/G and +1196C/T polymorphisms on the risk of asthma. Material/Methods An electronic literature search was performed using PubMed, Embase, Web of Science, Chinese National Knowledge Infrastructure (CNKI), and Wanfang Data to find relevant studies. Odds ratios (ORs) and 95% confidence intervals (CIs) were used to assess the strength of the associations. All statistical analyses were conducted using STATA software version 12.0. Results A total of 14 studies with 2873 asthma cases and 3110 controls were included. The pooled results indicated a significant association between TLR4 +1196C/T polymorphism and the risk of asthma (T vs. C: OR=0.79, 95%CI=0.63–0.99, P=0.04; TT+CT vs. CC: OR=0.76, 95%CI=0.59–0.96, P=0.03; CT vs. CC: OR=0.74, 95%CI=0.58–0.95, P=0.02). In subgroup analysis by ethnicity, TLR4 +1196C/T polymorphism was significantly associated with asthma risk in Asians (T vs. C: OR=0.73, 95%CI=0.54–0.98, P=0.04; TT+CT vs. CC: OR=0.70, 95%CI=0.51–0.96, P=0.03; CT vs. CC: OR=0.69, 95%CI=0.50–0.96, P=0.03), but not in whites. For TLR4 +896A/G polymorphism, no significant association was found between TLR4 +896A/G polymorphism and asthma risk under any genetic models. Conclusions The results of this meta-analysis suggest that T allele of the TLR4 +1196C/T might act as a protective factor against the development of asthma.
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Affiliation(s)
- Shaojun Li
- Department of Respiratory Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China (mainland)
| | - Xinming Xie
- Department of Respiratory Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China (mainland)
| | - Yang Song
- Department of Respiratory Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China (mainland)
| | - Haoxiang Jiang
- Department of Respiratory Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China (mainland)
| | - Xiaojuan Wu
- Department of Respiratory Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China (mainland)
| | - Xiaofan Su
- Department of Respiratory Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China (mainland)
| | - Lan Yang
- Department of Respiratory Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China (mainland)
| | - Manxiang Li
- Department of Respiratory Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China (mainland)
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13
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Feng J, Zhang C, Wang Z, Li Q, Li J, Wang H. Association between CD14 gene promoter polymorphisms with serum total-IgE and eosinophil levels in atopic and non-atopic asthma patients in a Chinese Han population. J Asthma 2015; 53:119-24. [PMID: 26365205 DOI: 10.3109/02770903.2015.1080267] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
OBJECTIVE The aim of this study was to investigate the association between CD14 gene promoter SNPs with serum total-IgE and eosinophil levels in atopic asthma and non-atopic asthma in Chinese Han. METHODS A total of 152 patients with asthma were divided into atopic asthma (n = 100) and non-atopic asthma (n = 52) groups for this study. Six CD14 gene SNPs were analyzed using PCR and gene sequencing. Serum total-IgE and eosinophil levels were measured. The association between genotype frequencies of the CD14 gene loci with total-IgE and eosinophil levels in atopic asthma and non-atopic asthma was evaluated by the ANOVA test method. Hundred and sixteen healthy subjects constitute the control group. RESULTS We found that serum total-IgE and eosinophil levels were significantly higher in individuals with atopic asthma when compared to individuals with non-atopic asthma (p < 0.01). For non-atopic asthma, the total-IgE levels of the heterozygous genotypes were significantly higher than the corresponding levels for the homozygous genotypes in CD14-260C > T, CD-651C > T, CD-911A > C and CD-1247A > G (p < 0.01). In atopic asthma, there was no statistical significance for either serum total-IgE or eosinophil levels among the genotypes of the CD14 gene SNPs. In addition, allele A frequency of CD14-1247A > G was significantly different between the atopic asthma and non-atopic asthma groups (p = 0.025). CONCLUSIONS There was a statistical association between the serum total-IgE level and the CD14 gene promoter SNPs in the non-atopic asthma group. The eosinophil level was not found to be statistically associated with the CD14 gene promoter SNPs in either the atopic asthma or non-atopic asthma groups.
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Affiliation(s)
- Jiankai Feng
- a Clinical Laboratory Medicine, Yan Tai Affiliated Hospital of Binzhou Medical University , Yantai , China
| | - Caiji Zhang
- b Center of Laboratory Medicine, the Affiliated Yuhuangding Hospital of Qingdao University Medical College , Yantai , China , and
| | - Zongguo Wang
- c Yantai Municipal Center for Disease Control and Prevention , Yantai , China
| | - Qian Li
- b Center of Laboratory Medicine, the Affiliated Yuhuangding Hospital of Qingdao University Medical College , Yantai , China , and
| | - Jie Li
- b Center of Laboratory Medicine, the Affiliated Yuhuangding Hospital of Qingdao University Medical College , Yantai , China , and
| | - Hongling Wang
- b Center of Laboratory Medicine, the Affiliated Yuhuangding Hospital of Qingdao University Medical College , Yantai , China , and
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14
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Yao Y, Ren X, He L, Li J, Jin Y, Chang W, Li C. TLR4 +896A>G (Asp299Gly) polymorphism is not associated with asthma: a update meta-analysis. Int J Clin Exp Med 2014; 7:5358-5361. [PMID: 25664044 PMCID: PMC4307491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Accepted: 11/20/2014] [Indexed: 06/04/2023]
Abstract
Some research reported that polymorphisms in the toll-Like receptor 4 may have influence on asthma risk. Here, we sought to estimate the effects of Toll-Like Receptor 4 (Asp299Gly) genes on asthma risk. Databases including PubMed and Chinese National Knowledge Infrastructure (CNKI) databases were searched to find relevant studies. The odds ratio (OR) with corresponding 95% confidence intervals (CIs) was performed. A total of 12 case-control studies were finally identified. This meta-analysis indicated that no significant association was found between TLR4 (Asp299Gly) genes and asthma risk (OR = 0.91, 95% CI = 0.71-1.12). In conclusion, our findings suggest that TLR4 +896A>G (Asp299Gly) polymorphism may not contribute to the risk of asthma.
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Affiliation(s)
- Yingshui Yao
- Laboratory of Environment and Health, School of Earth and Environment, Anhui University of Science and TechnologyHuainan 232001, China
- School of Public Health, Wannan Medical CollegeWuhu 241002, China
| | - Xiaohua Ren
- School of Public Health, Wannan Medical CollegeWuhu 241002, China
| | - Lianping He
- School of Public Health, Wannan Medical CollegeWuhu 241002, China
| | - Jie Li
- School of Public Health, Wannan Medical CollegeWuhu 241002, China
| | - Yuelong Jin
- School of Public Health, Wannan Medical CollegeWuhu 241002, China
| | - Weiwei Chang
- School of Public Health, Wannan Medical CollegeWuhu 241002, China
| | - Chaopin Li
- Laboratory of Environment and Health, School of Earth and Environment, Anhui University of Science and TechnologyHuainan 232001, China
- Department of Medical Parasitology, Wannan Medical CollegeWuhu 241002, China
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15
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Tizaoui K, Kaabachi W, Hamzaoui K, Hamzaoui A. Association of Single Nucleotide Polymorphisms in Toll-like Receptor Genes With Asthma Risk: A Systematic Review and Meta-analysis. Allergy Asthma Immunol Res 2014; 7:130-40. [PMID: 25729620 PMCID: PMC4341334 DOI: 10.4168/aair.2015.7.2.130] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Revised: 04/13/2014] [Accepted: 05/02/2014] [Indexed: 12/26/2022]
Abstract
Purpose Asthma is a complex disease, with contributions from multiple genes, various genetic backgrounds, and environmental factors. Many human epidemiological studies have demonstrated that single nucleotide polymorphisms (SNPs) in Toll-like receptor (TLR) genes are inconsistently associated with asthma risk. Some have demonstrated differences concerning the study design and effect size, and conflicting results have been reported. A meta-analysis is necessary to determine the magnitude of this association. Methods Following the Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines, a systematic search and meta-analysis of the literature was conducted to estimate the association of SNPs in TLR genes with asthma risk. We screened the medical literature based on the following keyword searches in MEDLINE and EMBASE databases: 'TLR', 'polymorphism', 'asthma', and their combinations. Results Meta-analysis of eight studies on TLR4 Asp299Gly showed a marginal association of TLR4 with asthma risk (odds ratio [OR]=0.814 [95% confidence interval [CI], 0.652-1.016; P=0.069]) in the recessive model. TLR4 Thr399Ile was not associated with asthma risk under any genetic model. Meta-analysis of four studies on TLR2 Arg753Gln indicated that TLR2 might be significantly associated with asthma in the dominant and codominant models (P=0.029, P=0.030, and P=0.009, respectively). TLR9 -1237 was marginally associated with asthma risk (OR=0.408 [95% CI, 0.163-1.021; P=0.065]) in the codominant model. Analysis using the allele contrast model showed that the major TLR9 -1237 T allele tended to be a significant protective factor with OR=0.689 (95% CI, 0.471-1.007; P=0.055). Conclusions The results showed that TLR4 Asp299Gly, TLR2 Arg753Gln, and TLR9-1237 might contribute significantly to asthma susceptibility. Future genetic association studies would consolidate these findings.
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Affiliation(s)
- Kalthoum Tizaoui
- Division of Histology and Immunology, Department of Basic Sciences, Faculty of medicine Tunis, Tunis El Manar University, Tunis, Tunisia
| | - Wajih Kaabachi
- Division of Histology and Immunology, Department of Basic Sciences, Faculty of medicine Tunis, Tunis El Manar University, Tunis, Tunisia
| | - Kamel Hamzaoui
- Division of Histology and Immunology, Department of Basic Sciences, Faculty of medicine Tunis, Tunis El Manar University, Tunis, Tunisia
| | - Agnès Hamzaoui
- Division of Histology and Immunology, Department of Basic Sciences, Faculty of medicine Tunis, Tunis El Manar University, Tunis, Tunisia. ; Division of Pulmonology, Unit research: 1 2 SP15"Homeostasis and Cell Immune Dysfunction", A. Mami Hospital, Ariana, Tunisia
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