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Safir W, Altaf S, Jan PFU, Shujaat N, Khan FU, Rehman A, Kousar S, Ghani MU, Sabar MF, Shahid M. Association of ORMDL3 single nucleotide polymorphic variants with bronchial asthma in Pathan population. GENE REPORTS 2024; 36:101958. [DOI: 10.1016/j.genrep.2024.101958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2024]
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Jangala M, Manche SK, Katika MM, Koralla RM, Akka J. Association of CYP1A2 and GST gene variants with asthma in cases presenting with allergic chronic rhinosinusitis. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2023. [DOI: 10.1186/s43042-023-00397-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023] Open
Abstract
Abstract
Background
Inter-individual differences in regulation and activity of xenobiotic metabolizing enzymes (XMEs) CYP1A and GST might cause distinct susceptibility to chronic rhinosinusitis (CRS) phenotypes that need to be explored. Therefore, the present study aimed to evaluate the role and risk of CYP1A and GST gene variants in allergic CRS subjects with and without asthma. A total of 224 allergic CRS cases with asthma, 252 allergic CRS cases without asthma, and 350 healthy control subjects were subjected to genetic analysis. Gene variants of cytochrome P450 (CYP1A1 T3801 rs4646903, A2455G rs1048943, C2453A rs1799814 and CYP1A2 G3858A rs2069514, T739G rs2069526, C163A rs762551) and glutathione S-transferase P (GSTP1 A313G rs1605 & C341T rs1799811) were investigated by polymerase chain reaction-restriction fragment length polymorphism and GSTM1null, and GSTT1null by multiplex PCR methods.
Results
TG genotype of CYP1A2 rs2069526 (OR 1.73, 95% CI 1.20–2.50, p < 0.002), TC genotype of CYP1A1 rs4646903 (OR 1.43, 95% CI 1.03–1.98, p < 0.031) and GSTM1del (OR 1.87, 95% CI 1.24–2.81, p < 0.003) and were found to be significantly associated with only allergic CRS cases. CYP1A2 rs2069526 (OR 2.33, 95% CI 1.61–3.37, p < 0.001), GG genotype of GSTP1 rs1605 (OR 4.75, 95% CI 2.62–8.63, p < 0.001), GSTM1del (OR 1.82, 95% CI 1.19–2.78, p < 0.006), GSTM1/GSTT1 double null (OR 2.58, 95% CI 1.36–4.87, p < 0.004) and were found to be significantly associated with asthma in allergic CRS cases. Further, G-G-C haplotype of CYP1A2 rs2069514, rs2069526 and rs762551 gene variants was found to increase the risk for asthma by 5 folds in allergic CRS subjects (OR 5.53, 95% CI 1.76–17.31, p < 0.003) while T-G-C haplotype of CYP1A1 rs4646903, rs1048943, rs1799814 (OR 0.11, 95% CI (0.01–0.95, p < 0.045) and A-T haplotype of GSTP1 rs1605, rs1799811 (OR 0.27, 95% CI (0.08–0.89, p < 0.032) showed protective effect in allergic CRS group.
Conclusion
The present study reports the significantly increased association of CYP1A2, GSTM, and GSTP gene variants with asthma in allergic CRS.
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Afzal S, Ramzan K, Ullah S, Jamal A, Basit S, AlKattan KM, Waqar AB. Association between 17q21 variants and asthma predisposition in Pashtun population from Pakistan. J Asthma 2023; 60:63-75. [PMID: 34982638 DOI: 10.1080/02770903.2021.2025391] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
OBJECTIVE Asthma is a heterogeneous and genetically complex respiratory disease, and more than 300 million people are affected worldwide. In this study, frequencies of four SNPs (rs3816470, rs7216389, rs8067378, rs12603332) in chromosome 17q21 region were analyzed and their relationship with the asthma susceptibility, in the Pashtun population of Khyber Pakhtunkhwa province (KPK) of Pakistan were investigated. METHODS DNA samples from 500 subjects (asthma cases/controls) were genotyped by Sanger sequencing. Chi-square tests, logistic regression analysis, linkage disequilibrium, and haplotype analysis techniques were applied to study the association of the SNPs with asthma. RESULTS Genetic models, including recessive, dominant, co-dominant, over-dominant, and additive, were tested. The frequencies of alleles T/T at rs3816470 (OR = 1.91; 95%CI = 1.15-3.18; p = .011*) and rs7216389 (OR = 2.14; 95%CI = 1.21-3.79; p = .0076*), A/A at rs 8067378 (OR = 1.89; 95%CI = 1.17-3.06; p = .0081*), C/C at rs12603332 (OR = 1.97; 95%CI = 1.18-3.27; p = .008*), under recessive models, respectively, were significantly (p-values < .0125) associated with asthma susceptibility. The frequencies of T/T genotype in rs3816470 (OR = 6.01; 95%CI = 2.48-14.60; p = .000147*), and rs7216389 (OR = 5.05; 95%CI = 1.79-14.21; p = .003296*), and C/C at rs12603332 (OR = 2.64; 95%CI = 1.11-6.32; p = .019063*), were significantly (p-values < .0125) associated with asthma susceptibility in Pashtun women by stratified analysis based on age and gender. Similarly, three unique haplotypes were found associated with disease development and protective effect in female and male subjects. Linkage disequilibrium analysis presented a strong linkage (≥80%) between SNP variants and predicted their co-inheritance in the studied population. CONCLUSION The 17q21 variants (rs3816470, rs7216389, rs12603332) were found significantly (p-values < .0125) associated with asthma predisposition in the Pashtun population of KPK exclusively in the female asthmatic cases. Supplemental data for this article can be accessed.
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Affiliation(s)
- Sibtain Afzal
- Department of Medical Laboratory Sciences, Faculty of Allied & Health Sciences, Imperial College of Business Studies, Lahore, Pakistan.,College of Medicine, Alfaisal University, Riyadh, Saudi Arabia
| | - Khushnooda Ramzan
- Department of Genetics, King Faisal Specialist Hospital & Research Centre, Riyadh, Saudi Arabia
| | - Sajjad Ullah
- Department of Medical Laboratory Sciences, Faculty of Allied & Health Sciences, Imperial College of Business Studies, Lahore, Pakistan
| | - Arshad Jamal
- Department of Medical Laboratory Sciences, Faculty of Allied & Health Sciences, Imperial College of Business Studies, Lahore, Pakistan.,Biology Department, College of Science, University of Hail, Kingdom of Saudi Arabia
| | - Sulman Basit
- Center for Genetics and Inherited Diseases, Taibah University, Madinah Al-Munawarah, Saudi Arabia
| | | | - Ahmed Bilal Waqar
- Department of Medical Laboratory Sciences, Faculty of Allied & Health Sciences, Imperial College of Business Studies, Lahore, Pakistan.,University Institute of Medical Laboratory Technology, Faculty of Allied Health Sciences, University of Lahore, Lahore, Pakistan
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Nojima S. Class IV semaphorins in disease pathogenesis. Pathol Int 2022; 72:471-487. [PMID: 36066011 DOI: 10.1111/pin.13270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 08/16/2022] [Indexed: 12/01/2022]
Abstract
Semaphorins are a large family of secreted and/or transmembrane proteins, originally identified as proteins that function in axon guidance during neuronal development. However, semaphorins play crucial roles in other physiological and pathological processes, including immune responses, angiogenesis, maintenance of tissue homeostasis, and cancer progression. Class IV semaphorins may be present as transmembrane and soluble forms and are implicated in the pathogenesis of various diseases. This review discusses recent progress on the roles of class IV semaphorins determined by clinical and experimental pathology studies.
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Affiliation(s)
- Satoshi Nojima
- Department of Pathology, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan.,Department of Immunopathology, World Premier International Research Center Initiative (WPI), Immunology Frontier Research Center (IFReC), Osaka University, Suita, Osaka, Japan
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Feng J, Tang Y, Yang Z, Bao B, Liu Y, Deng S, Li H, Li J, Wang J. Explore the Effect of Asthma Regulating HIF-1 Pathway on Sperm Quality Based on Rat Model. BIOMED RESEARCH INTERNATIONAL 2022; 2022:4194685. [PMID: 35620222 PMCID: PMC9129962 DOI: 10.1155/2022/4194685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 04/16/2022] [Indexed: 11/17/2022]
Abstract
This study is to verify the effect of asthma on sperm quality and explore its potential underlying mechanism. We randomly categorized the Sprague-Dawley (SD) rats into control (Group C) and asthma model (Group M) groups. Rats in the asthma model group were induced allergic asthma by intraperitoneal injection of ovalbumin solution. We evaluated the sperm motility and sperm concentration. The expression of the Interleukin-6 (IL6), phosphorylation-signal transducer and activator of transcription 3 (p-Stat3), and hypoxia-inducible factor-1α (HIF-1α) proteins and mRNAs in the testicular tissue was detected by western blotting and RT-qPCR. Compared with group C, sperm concentration and sperm motility in group M rats were significantly decreased (P < 0.05). Meanwhile, compared with group C, the expression levels of IL6, Stat3, and HIF-1α proteins and mRNAs in group M rats were significantly increased (P < 0.05). Asthma can regulate the HIF-1 signaling pathway, promoting the expression of IL6, Stat3, and HIF-1α protein and mRNAs, so as to promote sperm apoptosis and ultimately causing male infertility.
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Affiliation(s)
- Junlong Feng
- Beijing University of Chinese Medicine, Beijing 100029, China
- Department of Andrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China
| | - Yuan Tang
- Urology Andrology Center of Peking University First Hospital, Beijing 100034, China
| | - Zhen Yang
- Beijing University of Chinese Medicine, Beijing 100029, China
- Department of Andrology, Shunyi Hospital of Beijing Traditional Chinese Medicine Hospital, Beijing 101300, China
| | - Binghao Bao
- Beijing University of Chinese Medicine, Beijing 100029, China
| | - Yichen Liu
- Beijing University of Chinese Medicine, Beijing 100029, China
- Department of Andrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China
| | - Sheng Deng
- Beijing University of Chinese Medicine, Beijing 100029, China
- Department of Andrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China
| | - Haisong Li
- Department of Andrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China
| | - Jiangbin Li
- Department of Andrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China
| | - Jisheng Wang
- Department of Andrology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 100700, China
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Chen LH, Chiu KL, Hsia TC, Lee YH, Shen TC, Li CH, Shen YC, Chang WS, Tsai CW, Bau DAT. Significant Association of MMP2 Promoter Genotypes to Asthma Susceptibility in Taiwan. In Vivo 2021; 34:3181-3186. [PMID: 33144422 DOI: 10.21873/invivo.12153] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/04/2020] [Accepted: 10/05/2020] [Indexed: 12/16/2022]
Abstract
BACKGROUND/AIM Matrix metalloproteinase 2 (MMP2) is reported to be overexpressed in asthma; however, its genotypic contribution to asthma is not well studied. Therefore, we examined the association of MMP2 genotypes with asthma risk among Taiwanese. MATERIALS AND METHODS One hundred and ninety-eight asthma patients and 453 non-asthmatic subjects were determined with respect to their MMP2 -1306 (rs243845) and -735 (rs2285053) genotypes. RESULTS CT and TT at MMP2 rs243845 are 17.7% and 1.5% among asthma cases, whereas their presence in healthy subjects is at 28.1% and 2.4%, respectively (p for trend=0.0118). In detail, the CT genotype in MMP2 rs243845 was associated with a decreased asthma risk [adjusted odds ratio (OR)=0.57, 95% confidence interval (CI)=0.37-0.78, p=0.0040], and the T allele conferred a significantly lower asthma risk compared to the wild-type C allele (adjusted OR=0.55, 95%CI=0.43-0.77, p=0.0042). No significance was found for MMP2 rs2285053. CONCLUSION The genotype of CT in MMP2 rs243845 may serve as a novel biomarker in determining susceptibility to asthma in Taiwan.
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Affiliation(s)
- Li-Hsiou Chen
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan, R.O.C.,Division of Chest Medicine, Department of Internal Medicine, Taichung Tzu Chi Hospital, Taichung, Taiwan, R.O.C
| | - Kuo-Liang Chiu
- Division of Chest Medicine, Department of Internal Medicine, Taichung Tzu Chi Hospital, Taichung, Taiwan, R.O.C.,School of Post-Baccalaureate Chinese Medicine, Tzu Chi University, Hualien, Taiwan, R.O.C
| | - Te-Chun Hsia
- Terry Fox Cancer Research Laboratory, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan, R.O.C
| | - Yen-Hsien Lee
- Division of Chest Medicine, Department of Internal Medicine, Taichung Tzu Chi Hospital, Taichung, Taiwan, R.O.C
| | - Te-Chun Shen
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan, R.O.C.,Terry Fox Cancer Research Laboratory, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan, R.O.C
| | - Chia-Hsiang Li
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan, R.O.C.,Terry Fox Cancer Research Laboratory, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan, R.O.C
| | - Yi-Cheng Shen
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan, R.O.C.,Terry Fox Cancer Research Laboratory, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan, R.O.C
| | - Wen-Shin Chang
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan, R.O.C.,Terry Fox Cancer Research Laboratory, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan, R.O.C
| | - Chia-Wen Tsai
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan, R.O.C.,Terry Fox Cancer Research Laboratory, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan, R.O.C
| | - DA-Tian Bau
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan, R.O.C. .,Terry Fox Cancer Research Laboratory, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan, R.O.C.,Department of Bioinformatics and Medical Engineering, Asia University, Taichung, Taiwan, R.O.C
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Wang JS, Gong XF, Feng JL, Li HS, Li X, Deng S, Ren PZ, Wang JM, Lv MS, Jin RF, Chen QY, Wang B, Cui HS. Study on the Mechanism of Jiawei Shengjiang Powder in Improving Male Asthma-Induced Asthenospermia Based on Network Pharmacology and Bioinformatics. Drug Des Devel Ther 2021; 15:1245-1259. [PMID: 33776422 PMCID: PMC7989703 DOI: 10.2147/dddt.s296901] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 02/24/2021] [Indexed: 12/02/2022] Open
Abstract
Background Jiawei Shengjiang Powder (JWSJP) is a classical Chinese medicinal formula, which has been widely applied in the treatment of asthma and complications for many years due to its curative effect. Aim To verify the effect of JWSJP in improving abnormal sperm motility caused by asthma and to explore its potential mechanism. Materials and Methods The active compounds of JWSJP were obtained from high performance liquid chromatography tandem mass spectrometry and the Traditional Chinese Medicine System Pharmacology. The key active components and targets of JWSJP were predicted based on network pharmacological analysis and bioinformatics research. Rats were randomly divided into normal, model and treatment groups. The rat model of allergic asthma was induced by intraperitoneal injection of ovalbumin solution. The experiment judged improvement of semen quality by evaluating sperm motility, and detected the expression of related proteins in testicular tissue of Sprague-Dawley rats by RT-qPCR and Western blot methods. Hematoxylin and eosin (HE) staining was used to observe the changes in testicular tissue structure in rats. Results Through the analysis of network pharmacology and bioinformatics, it was found that beta-sitosterol, quercetin, gallic acid, pelargonidin and kaempferol were the key active components of Jiawei Shengjiang Powder. Tumor necrosis factor (TNF), interleukin-6 (IL-6) and insulin (INS) genes are crucial targets of JWSJP in the treatment of spermatogenic dysfunction caused by acute asthma. After 8 weeks of intervention, compared with the model group, the treatment group had significantly improved sperm motility (P < 0.05). There were significant differences in TNF, IL6, and INS proteins in the treatment group, and the HE staining of testicular tissue structure in the treatment group was significantly improved. Conclusion JWSJP can improve the abnormal sperm motility induced by asthma, and its mechanism may be related to the expression of related proteins and mRNA of TNF, IL6, and INS.
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Affiliation(s)
- Ji-Sheng Wang
- First Clinical Medical College, Beijing University of Chinese Medicine, Beijing, 100029, People's Republic of China.,Andrology Department, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, 100700, People's Republic of China
| | - Xue-Feng Gong
- The Third Affiliated Hospital of Beijing University of Chinese Medicine, Beijing, 100029, People's Republic of China.,Pneumology Department, The Third Affiliated Hospital of Beijing University of Chinese Medicine, Beijing, 100029, People's Republic of China
| | - Jun-Long Feng
- First Clinical Medical College, Beijing University of Chinese Medicine, Beijing, 100029, People's Republic of China.,Andrology Department, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, 100700, People's Republic of China
| | - Hai-Song Li
- Andrology Department, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, 100700, People's Republic of China
| | - Xiao Li
- Department of Andrology, The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, 450046, People's Republic of China
| | - Sheng Deng
- First Clinical Medical College, Beijing University of Chinese Medicine, Beijing, 100029, People's Republic of China.,Andrology Department, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, 100700, People's Republic of China
| | - Pei-Zhong Ren
- The Third Affiliated Hospital of Beijing University of Chinese Medicine, Beijing, 100029, People's Republic of China.,Pneumology Department, The Third Affiliated Hospital of Beijing University of Chinese Medicine, Beijing, 100029, People's Republic of China
| | - Jia-Mei Wang
- The Third Affiliated Hospital of Beijing University of Chinese Medicine, Beijing, 100029, People's Republic of China.,Pneumology Department, The Third Affiliated Hospital of Beijing University of Chinese Medicine, Beijing, 100029, People's Republic of China
| | - Ming-Sheng Lv
- The Third Affiliated Hospital of Beijing University of Chinese Medicine, Beijing, 100029, People's Republic of China.,Pneumology Department, The Third Affiliated Hospital of Beijing University of Chinese Medicine, Beijing, 100029, People's Republic of China
| | - Rui-Feng Jin
- The Third Affiliated Hospital of Beijing University of Chinese Medicine, Beijing, 100029, People's Republic of China.,Pneumology Department, The Third Affiliated Hospital of Beijing University of Chinese Medicine, Beijing, 100029, People's Republic of China
| | - Qiu-Yi Chen
- The Third Affiliated Hospital of Beijing University of Chinese Medicine, Beijing, 100029, People's Republic of China.,Pneumology Department, The Third Affiliated Hospital of Beijing University of Chinese Medicine, Beijing, 100029, People's Republic of China
| | - Bin Wang
- Andrology Department, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, 100700, People's Republic of China
| | - Hong-Sheng Cui
- Pneumology Department, The Third Affiliated Hospital of Beijing University of Chinese Medicine, Beijing, 100029, People's Republic of China
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Hsiao WY, Tsai CW, Chang WS, Wang S, Chao CY, Chen WC, Shen TC, Hsia TC, Bau DAT. Association of Polymorphisms in DNA Repair Gene XRCC3 with Asthma in Taiwan. In Vivo 2018; 32:1039-1043. [PMID: 30150425 DOI: 10.21873/invivo.11344] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Revised: 05/21/2018] [Accepted: 05/23/2018] [Indexed: 12/16/2022]
Abstract
AIM Accumulating evidence suggests that DNA damage and repair play a role in asthma etiology, however, little is known about the contribution of genotypes of DNA repair genes to asthma susceptibility. This study aimed to examine the contribution of genotypes of DNA double-strand break repair gene X-ray repair cross complementing protein 3 (XRCC3) and its polymorphisms to asthma risk in the Taiwanese. MATERIALS AND METHODS Associations of seven XRCC3 genotypes, namely rs1799794, rs45603942, rs861530, rs3212057, rs1799796, rs861539 and rs28903081, with the risk of asthma were investigated among 198 patients with asthma and 453 non-asthma controls by polymerase chain reaction-restriction fragment length polymorphism genotyping methodology. RESULTS Unlike Caucasian populations, no polymorphic genotypes at XRCC3 rs3212057 or rs28903081 were found among the Taiwanese. For the genotypes of XRCC3 rs1799794, rs45603942, rs861530, rs1799796 and rs861539, the percentages of hetero-and homo-variant genotypes were not differentially represented between the asthma patient and the non-asthma control groups. In addition, there was no differential distribution of allelic frequencies for these XRCC3 polymorphic sites between the two groups. No interaction of these genotypes with gender or age were found. CONCLUSION Although XRCC3 plays a role in asthma etiology, the variant XRCC3 genotypes do not serve as practicable predictive markers for asthma risk in Taiwanese.
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Affiliation(s)
- Wan-Yun Hsiao
- Department of Respiratory Therapy, China Medical University Hospital, Taichung, Taiwan, R.O.C.,Department of Respiratory Therapy, China Medical University, Taichung, Taiwan, R.O.C
| | - Chia-Wen Tsai
- Terry Fox Cancer Research Laboratory - Translational Medicine Research Center, China Medical University Hospital, Taichung, Taiwan, R.O.C
| | - Wen-Shin Chang
- Terry Fox Cancer Research Laboratory - Translational Medicine Research Center, China Medical University Hospital, Taichung, Taiwan, R.O.C.,Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan, R.O.C
| | - Shengyu Wang
- Department of Pulmonary and Critical Care Medicine, the First Affiliated Hospital of Xi'an Medical University, Xi'an, P.R. China
| | - Che-Yi Chao
- Department of Health and Nutrition Biotechnology, Asia University, Taichung, Taiwan, R.O.C
| | - Wei-Chun Chen
- Department of Respiratory Therapy, China Medical University, Taichung, Taiwan, R.O.C.,Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan, R.O.C
| | - Te-Chun Shen
- Terry Fox Cancer Research Laboratory - Translational Medicine Research Center, China Medical University Hospital, Taichung, Taiwan, R.O.C. .,Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan, R.O.C
| | - Te-Chun Hsia
- Department of Respiratory Therapy, China Medical University, Taichung, Taiwan, R.O.C. .,Terry Fox Cancer Research Laboratory - Translational Medicine Research Center, China Medical University Hospital, Taichung, Taiwan, R.O.C.,Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan, R.O.C
| | - DA-Tian Bau
- Terry Fox Cancer Research Laboratory - Translational Medicine Research Center, China Medical University Hospital, Taichung, Taiwan, R.O.C. .,Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan, R.O.C.,Department of Bioinformatics and Medical Engineering, Asia University, Taichung, Taiwan, R.O.C
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Marcos-Vadillo E, García-Sánchez A, Sanz C, Davila I, Isidoro-García M. PTGDR gene expression and response to dexamethasone treatment in an in vitro model. PLoS One 2017; 12:e0186957. [PMID: 29088248 PMCID: PMC5663384 DOI: 10.1371/journal.pone.0186957] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 10/10/2017] [Indexed: 12/14/2022] Open
Abstract
Asthma is a multifactorial pathology influenced by environmental and genetic factors. Glucocorticoid treatment decreases symptoms by regulating genes involved in the inflammatory process through binding to specific DNA sequences. Polymorphisms located in the promoter region of the Prostaglandin D Receptor (PTGDR) gene have been related to asthma. We aimed to analyze the effect of PTGDR promoter haplotypes on gene expression and response to corticosteroid therapy. A549 lung epithelial cells were transfected with vectors carrying four different PTGDR haplotypes (CTCT, CCCC, CCCT and TCCT), and treated with dexamethasone. Different approaches to study the promoter activity (Dual Luciferase Reporter System), gene expression levels (qPCR) and cytokine secretion (Multiplexed Bead-based Flow Cytometric) were used. In addition, in silico analysis was also performed. Cells carrying the TCCT haplotype showed the lowest promoter activity (p-value<0.05) and mRNA expression levels in basal conditions. After dexamethasone treatment, cells carrying the wild-type variant CTCT showed the highest response, and those carrying the TCCT variant the lowest (p-value<0.05) in luciferase assays. Different transcription factor binding patterns were identified in silico. Moreover, differences in cytokine secretion were also found among different promoter haplotypes. Polymorphisms of PTGDR gene influence basal promoter activity and gene expression, as well as the cytokine secretory pattern. Furthermore, an association between these positions and response to corticoid treatment was observed.
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Affiliation(s)
| | - Asunción García-Sánchez
- Institute for Biomedical Research, IBSAL, Salamanca, Spain
- Department of Biomedical and Diagnostic Sciences, University of Salamanca, Salamanca, Spain
| | - Catalina Sanz
- Institute for Biomedical Research, IBSAL, Salamanca, Spain
- Department of Microbiology and Genetics, University of Salamanca, Salamanca, Spain
| | - Ignacio Davila
- Institute for Biomedical Research, IBSAL, Salamanca, Spain
- Department of Biomedical and Diagnostic Sciences, University of Salamanca, Salamanca, Spain
- Department of Allergy, University Hospital of Salamanca, Salamanca, Spain
- * E-mail:
| | - María Isidoro-García
- Institute for Biomedical Research, IBSAL, Salamanca, Spain
- Department of Clinical Biochemistry, University Hospital of Salamanca, Salamanca, Spain
- Department of Medicine, University of Salamanca, Salamanca, Spain
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10
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Shen TC, Tsai CW, Chang WS, Wang S, Chao CY, Hsiao CL, Chen WC, Hsia TC, Bau DT. Association of Interleukin-12A rs568408 with Susceptibility to Asthma in Taiwan. Sci Rep 2017; 7:3199. [PMID: 28600552 PMCID: PMC5466618 DOI: 10.1038/s41598-017-03523-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 05/02/2017] [Indexed: 11/22/2022] Open
Abstract
Asthma is an inflammatory disease and interleukin 12 (IL-12) may play a regulatory role in allergen-induced inflammation. The aim of this study was to investigate the association of polymorphisms in IL-12A/IL-12B with asthma. The asthma group included 198 adult patients and the control group included 453 individuals without asthma that were frequency-matched by gender and age. The distribution of genotypic and allelic frequencies of IL-12A rs568408 demonstrated significant differences between case and control groups. Specifically, the percentages of AA genotype of IL-12A rs568408 was significantly higher among asthmatic patients in Taiwan than healthy controls, compared to GG genotype. No significant difference was observed among the IL-12A rs2243115 and IL-12B rs3212227 genotypes between case and control groups. In addition, the A allele at IL-12A rs568408 was associated with more severe symptoms (P = 0.0085) among asthmatic patients. These results suggest that IL-12A rs568408 may contribute to the etiology and symptoms severity of asthma, indicating its usefulness as a predictive and diagnostic biomarker of asthma.
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Affiliation(s)
- Te-Chun Shen
- Graduate Institute of Clinical Medical Science, College of Medicine, China Medical University, Taichung, Taiwan, ROC.,Terry Fox Cancer Research Laboratory, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan, ROC.,Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan, ROC
| | - Chia-Wen Tsai
- Terry Fox Cancer Research Laboratory, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan, ROC
| | - Wen-Shin Chang
- Terry Fox Cancer Research Laboratory, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan, ROC
| | - Shengyu Wang
- Department of Pulmonary and Critical Care Medicine, the First Affiliated Hospital of Xi'an Medical University, Xi'an, P.R. China
| | - Che-Yi Chao
- Department of Health and Nutrition Biotechnology, Asia University, Taichung, Taiwan, ROC
| | - Chieh-Lun Hsiao
- Terry Fox Cancer Research Laboratory, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan, ROC
| | - Wei-Chun Chen
- Terry Fox Cancer Research Laboratory, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan, ROC.,Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan, ROC.,Department of Respiratory Therapy, China Medical University, Taichung, Taiwan, ROC
| | - Te-Chun Hsia
- Terry Fox Cancer Research Laboratory, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan, ROC. .,Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan, ROC. .,Department of Respiratory Therapy, China Medical University, Taichung, Taiwan, ROC.
| | - Da-Tian Bau
- Graduate Institute of Clinical Medical Science, College of Medicine, China Medical University, Taichung, Taiwan, ROC. .,Terry Fox Cancer Research Laboratory, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan, ROC. .,Department of Bioinformatics and Medical Engineering, Asia University, Taichung, Taiwan, ROC.
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11
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Liu Y, Zhang H, Ni R, Jia WQ, Wang YY. IL-4R suppresses airway inflammation in bronchial asthma by inhibiting the IL-4/STAT6 pathway. Pulm Pharmacol Ther 2017; 43:32-38. [PMID: 28093225 DOI: 10.1016/j.pupt.2017.01.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 01/09/2017] [Accepted: 01/13/2017] [Indexed: 01/26/2023]
Abstract
OBJECTIVE This study aims to explore the mechanisms of how IL-4R suppresses airway inflammation in bronchial asthma by inhibiting the IL-4/STAT6 pathway. METHODS A total of 27 BALB/c male mice were selected and divided into control, asthma and IL-4R groups. Ovalbumin-induced mouse asthma model was established. Maximal pulmonary resistance was recorded. Hematoxylin and eosin (HE) and periodic acid Schiff (PAS) staining were conducted to observe the pathological changes in lung tissue. Optical microscope was used to detect numbers of total cells, mastocytes, eosinophils (EOS), neutrophils, and lymphocytes. Enzyme-linked immunosorbent assay (ELISA) was adopted for the levels of immunoglobulin (IgE), IL-4, IL-5, IL-13 and interferon (IFN)-γ, flow cytometry for the percentages of IL-4+ CD4+, IFN-γ+ CD4+ and IFN-γ+/IL-4+ in total thymus-derived (T) cells, qRT-PCR for the mRNA expressions of IL-4, IL-5, IL-13, STAT6, pSTAT6, suppressor of cytokine signaling (SOCS), inducible nitric oxide synthase (iNOS) and vascular cell adhesion molecule (VCAM)-1, and Western blotting for the protein expressions of STAT6 and pSTAT6. RESULTS Compared with the control group, the asthma group had irregular tissue structure and severe inflammation, increases in maximal pulmonary resistance, numbers of total cells, EOS, neutrophils, and lymphocytes, levels of IgE, IL-4, IL-5 and IL-13, percentages of IFN-γ+ CD4+ and IFN-γ+/IL-4+ in total T cells, mRNA expressions of IL-4, IL-5, IL-13, STAT6, pSTAT6, SOCS, iNOS and VCAM-1, and protein expressions of STAT6 and pSTAT6, but decreases in IFN-γ level and percentage of IL-4+ CD4+ in total T cells. Compared with the asthma group, the IL-4R group had relatively regular tissue structure and light inflammation, declined maximal RL, numbers of total cells, EOS, neutrophils, and lymphocytes, contents of IgE, IL-4, IL-5 and IL-13, percentages of IFN-γ+ CD4+ and IFN-γ+/IL-4+ in total T cells, mRNA expressions of IL-4, IL-5, IL-13, STAT6, pSTAT6, SOCS, iNOS and VCAM-1, and protein expressions of STAT6 and pSTAT6, but elevated IFN-γ content and percentage of IL-4+ CD4+ in total T cells. CONCLUSION Our results demonstrate that IL-4R can suppress airway inflammation in bronchial asthma by inhibited the IL-4/STAT6 pathway, which may provide a new therapeutic approach for the treatment of bronchial asthma.
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Affiliation(s)
- Ying Liu
- Department of Respiration Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, PR China.
| | - Hui Zhang
- Department of Respiration Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, PR China
| | - Ran Ni
- Department of Respiration Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, PR China
| | - Wen-Qing Jia
- Department of Respiration Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, PR China
| | - Yuan-Yuan Wang
- Department of Respiration Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, PR China
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12
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IgE-Related Chronic Diseases and Anti-IgE-Based Treatments. J Immunol Res 2016; 2016:8163803. [PMID: 28097159 PMCID: PMC5209625 DOI: 10.1155/2016/8163803] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 11/02/2016] [Indexed: 12/23/2022] Open
Abstract
IgE is an immunoglobulin that plays a central role in acute allergic reactions and chronic inflammatory allergic diseases. The development of a drug able to neutralize this antibody represents a breakthrough in the treatment of inflammatory pathologies with a probable allergic basis. This review focuses on IgE-related chronic diseases, such as allergic asthma and chronic urticaria (CU), and on the role of the anti-IgE monoclonal antibody, omalizumab, in their treatment. We also assess the off-label use of omalizumab for other pathologies associated with IgE and report the latest findings concerning this drug and other new related drugs. To date, omalizumab has only been approved for severe allergic asthma and unresponsive chronic urticaria treatments. In allergic asthma, omalizumab has demonstrated its efficacy in reducing the dose of inhaled corticosteroids required by patients, decreasing the number of asthma exacerbations, and limiting the effect on airway remodeling. In CU, omalizumab treatment rapidly improves symptoms and in some cases achieves complete disease remission. In systemic mastocytosis, omalizumab also improves symptoms and its prophylactic use to prevent anaphylactic reactions has also been discussed. In other pathologies such as atopic dermatitis, food allergy, allergic rhinitis, nasal polyposis, and keratoconjunctivitis, omalizumab significantly improves clinical manifestations. Omalizumab acts in two ways: by sequestering free IgE and by accelerating the dissociation of the IgE-Fcε receptor I complex.
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13
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Ito D, Kumanogoh A. The role of Sema4A in angiogenesis, immune responses, carcinogenesis, and retinal systems. Cell Adh Migr 2016; 10:692-699. [PMID: 27736304 PMCID: PMC5160039 DOI: 10.1080/19336918.2016.1215785] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Semaphorins were originally identified as axon guidance cues that regulate the functional activity of axons in the nervous system. In addition, accumulating evidence indicates that semaphorins have multiple functions in physiological and pathogenic processes, including vascular development, tumor progression, and immune responses. Sema4A is a semaphorin expressed in immune cells, and is thus termed an “immune semaphorin.” Sema4A has 4 types of receptors: Plexin D family, Plexin B family, Tim-2, and Nrp-1. Recent studies suggest that Sema4A plays critical roles in many processes including cell–cell interactions, immune-cell activation, differentiation, and migration. In other studies, Sema4A is also associated with carcinogenesis and retinal systems. In this review, we summarize current knowledge regarding the biology of Sema4A in relation to angiogenesis, immune responses, colorectal cancer, and the retina.
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Affiliation(s)
- Daisuke Ito
- a Department of Respiratory Medicine , Allergy and Rheumatic Disease, Osaka University Graduate School of Medicine , Suita , Osaka , Japan
| | - Atsushi Kumanogoh
- a Department of Respiratory Medicine , Allergy and Rheumatic Disease, Osaka University Graduate School of Medicine , Suita , Osaka , Japan
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14
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Žavbi M, Korošec P, Fležar M, Škrgat Kristan S, Marc Malovrh M, Rijavec M. Polymorphisms and haplotypes of the chromosome locus 17q12-17q21.1 contribute to adult asthma susceptibility in Slovenian patients. Hum Immunol 2016; 77:527-34. [PMID: 27163155 DOI: 10.1016/j.humimm.2016.05.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Revised: 02/18/2016] [Accepted: 05/04/2016] [Indexed: 11/24/2022]
Abstract
One of the major asthma susceptibility loci is 17q12-17q21.1, but the relationship between this locus and adult asthma is unclear. Association analysis of 13 single nucleotide polymorphisms (SNPs) and haplotypes from 17q12-17q21.1 was performed in 418 adult patients with asthma and 288 controls from Slovenia. Single SNP analysis revealed only marginal associations with adult asthma for SNPs located in GSDMA, GSDMB, ORMDL3 and ZPBP2 genes, and rs7219080 was the most highly associated. Analyses of asthma phenotypes found no association with atopy or lung function, but rs2305480 and rs8066582 were associated with childhood asthma and rs9916279 was associated with asthma in smokers. Notably, haplotypes consisting of rs9916279, rs8066582, rs1042658, and rs2302777 harbouring PSMD3, CSF3 and MED24 genes were highly associated with asthma. The four most common haplotypes, TCCG, TTTA, CCCA and TTCA, were more frequent in patients with asthma, whereas TTCG, TCCA, TCTA and TTTG were more frequent in controls. Only 3% of asthma patients belonged to haplotypes TTCG, TCCA, TCTA and TTTG compared with nearly one-third (31%) of controls. Associations confirmed that the 17q12-17q21.1 locus harbours a genetic determinant for asthma risk in adults and suggest that in addition to the previously known ORMDL3-GSDM locus, CSF3-PSMD3-MED24 also plays a role in asthma pathogenesis.
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Affiliation(s)
- Mateja Žavbi
- University Clinic of Respiratory and Allergic Diseases Golnik, Golnik 36, 4204 Golnik, Slovenia
| | - Peter Korošec
- University Clinic of Respiratory and Allergic Diseases Golnik, Golnik 36, 4204 Golnik, Slovenia
| | - Matjaž Fležar
- University Clinic of Respiratory and Allergic Diseases Golnik, Golnik 36, 4204 Golnik, Slovenia
| | - Sabina Škrgat Kristan
- University Clinic of Respiratory and Allergic Diseases Golnik, Golnik 36, 4204 Golnik, Slovenia
| | - Mateja Marc Malovrh
- University Clinic of Respiratory and Allergic Diseases Golnik, Golnik 36, 4204 Golnik, Slovenia
| | - Matija Rijavec
- University Clinic of Respiratory and Allergic Diseases Golnik, Golnik 36, 4204 Golnik, Slovenia.
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15
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Xu W, Guo G, Li J, Ding Z, Sheng J, Li J, Tan W. Activation of Bcl-2-Caspase-9 Apoptosis Pathway in the Testis of Asthmatic Mice. PLoS One 2016; 11:e0149353. [PMID: 26938720 PMCID: PMC4777281 DOI: 10.1371/journal.pone.0149353] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Accepted: 01/29/2016] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND Apoptosis plays a critical role in controlling the proliferation and differentiation of germ cells during spermatogenesis. Dysregulation of the fine-tuned balance may lead to the onset of testicular diseases. In this study, we investigated the activation status of apoptosis pathways in the testicular tissues under the background of an asthmatic mouse model. METHODS Ten BALB/c mice were divided into two groups: the acute asthma group and the control group. In the acute asthma group, ovalbumin (OVA)-sensitized mice were challenged with aerosolized OVA for 7 days, while the control group was treated with physiological saline. After that, both epididymis and testis were collected to determine the sperm count and motility. Apoptosis in the testis was evaluated by DNA ladder, immunochemistry and further by PCR array of apoptosis-related genes. Finally, the cleavage of caspase-3 and poly ADP-ribose polymerase (PARP) was determined by western blot and the enzymatic activities of caspase-9 and 3/7 were assessed using Caspase-Glo kits. RESULTS Compared with control mice, significant decreases in the body weight, testis weight, sperm count and motility were seen in the experimental group. DNA ladder and immunochemistry showed significant increase in apoptotic index of the asthmatic testis, whereas a decrease in mRNA expression of Bcl-2 and increases in Bax, BNIP3, caspase-9, and AIF were observed in the asthma group. Furthermore, protein levels of AIF were significantly upregulated, while the translational expression of Bcl-2 was downregulated markedly. Consistently, caspase-9 activity in the testis of asthma mice was significantly higher than that of the control group. CONCLUSION Collectively, these results showed that Bcl-2-caspase-9 apoptosis pathway was clearly activated in the testis of asthmatic mice with the increased expression of apoptosis-related genes and proteins. To our knowledge, this is the first report demonstrating that asthma could lead to the activation of the mitochondrial apoptosis signaling pathway in the mouse testis.
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Affiliation(s)
- Wenyuan Xu
- Postgraduate Department of Internal Medicine, Weifang Medical University, Weifang, Shandong, China
| | - Guifang Guo
- Department of Respiratory Medicine, Weifang People's Hospital, Weifang, Shandong, China
| | - Junjuan Li
- Department of Respiratory Medicine, Weifang People's Hospital, Weifang, Shandong, China
| | - Zhaolei Ding
- Department of Respiratory Medicine, Weifang People's Hospital, Weifang, Shandong, China
| | - Jianhui Sheng
- Postgraduate Department of Internal Medicine, Weifang Medical University, Weifang, Shandong, China
| | - Juan Li
- Department of Respiratory Medicine, Weifang People's Hospital, Weifang, Shandong, China
| | - Wei Tan
- Department of Respiratory Medicine, Weifang People's Hospital, Weifang, Shandong, China
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16
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Torgerson DG, Giri T, Druley TE, Zheng J, Huntsman S, Seibold MA, Young AL, Schweiger T, Yin-Declue H, Sajol GD, Schechtman KB, Hernandez RD, Randolph AG, Bacharier LB, Castro M. Pooled Sequencing of Candidate Genes Implicates Rare Variants in the Development of Asthma Following Severe RSV Bronchiolitis in Infancy. PLoS One 2015; 10:e0142649. [PMID: 26587832 PMCID: PMC4654486 DOI: 10.1371/journal.pone.0142649] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Accepted: 02/06/2015] [Indexed: 12/17/2022] Open
Abstract
Severe infection with respiratory syncytial virus (RSV) during infancy is strongly associated with the development of asthma. To identify genetic variation that contributes to asthma following severe RSV bronchiolitis during infancy, we sequenced the coding exons of 131 asthma candidate genes in 182 European and African American children with severe RSV bronchiolitis in infancy using anonymous pools for variant discovery, and then directly genotyped a set of 190 nonsynonymous variants. Association testing was performed for physician-diagnosed asthma before the 7th birthday (asthma) using genotypes from 6,500 individuals from the Exome Sequencing Project (ESP) as controls to gain statistical power. In addition, among patients with severe RSV bronchiolitis during infancy, we examined genetic associations with asthma, active asthma, persistent wheeze, and bronchial hyperreactivity (methacholine PC20) at age 6 years. We identified four rare nonsynonymous variants that were significantly associated with asthma following severe RSV bronchiolitis, including single variants in ADRB2, FLG and NCAM1 in European Americans (p = 4.6x10-4, 1.9x10-13 and 5.0x10-5, respectively), and NOS1 in African Americans (p = 2.3x10-11). One of the variants was a highly functional nonsynonymous variant in ADRB2 (rs1800888), which was also nominally associated with asthma (p = 0.027) and active asthma (p = 0.013) among European Americans with severe RSV bronchiolitis without including the ESP. Our results suggest that rare nonsynonymous variants contribute to the development of asthma following severe RSV bronchiolitis in infancy, notably in ADRB2. Additional studies are required to explore the role of rare variants in the etiology of asthma and asthma-related traits following severe RSV bronchiolitis.
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Affiliation(s)
- Dara G. Torgerson
- Department of Medicine, University of California San Francisco, San Francisco, California, United States of America
| | - Tusar Giri
- Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Todd E. Druley
- Center for Genome Sciences and Systems Biology, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Jie Zheng
- Department of Biostatistics, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Scott Huntsman
- Department of Medicine, University of California San Francisco, San Francisco, California, United States of America
| | - Max A. Seibold
- Integrated Center for Genes, Environment and Health, National Jewish Health, Denver, Colorado, United States of America
| | - Andrew L. Young
- Center for Genome Sciences and Systems Biology, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Toni Schweiger
- Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Huiqing Yin-Declue
- Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Geneline D. Sajol
- Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Kenneth B Schechtman
- Department of Biostatistics, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Ryan D. Hernandez
- Department of Bioengineering and Therapeutic Sciences, Institute of Human Genetics, and California Institute of Quantitative Biosciences (QB3), University of California San Francisco, San Francisco, California, United States of America
| | - Adrienne G. Randolph
- Department of Anesthesiology, Boston Children’s Hospital, Boston, Massachusetts, United States of America
| | - Leonard B. Bacharier
- Department of Pediatrics, Washington University School of Medicine and St. Louis Children’s Hospital, St. Louis, Missouri, United States of America
| | - Mario Castro
- Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri, United States of America
- * E-mail:
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17
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Mersha TB. Mapping asthma-associated variants in admixed populations. Front Genet 2015; 6:292. [PMID: 26483834 PMCID: PMC4586512 DOI: 10.3389/fgene.2015.00292] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Accepted: 09/03/2015] [Indexed: 12/19/2022] Open
Abstract
Admixed populations arise when two or more previously isolated populations interbreed. Mapping asthma susceptibility loci in an admixed population using admixture mapping (AM) involves screening the genome of individuals of mixed ancestry for chromosomal regions that have a higher frequency of alleles from a parental population with higher asthma risk as compared with parental population with lower asthma risk. AM takes advantage of the admixture created in populations of mixed ancestry to identify genomic regions where an association exists between genetic ancestry and asthma (in contrast to between the genotype of the marker and asthma). The theory behind AM is that chromosomal segments of affected individuals contain a significantly higher-than-average proportion of alleles from the high-risk parental population and thus are more likely to harbor disease-associated loci. Criteria to evaluate the applicability of AM as a gene mapping approach include: (1) the prevalence of the disease differences in ancestral populations from which the admixed population was formed; (2) a measurable difference in disease-causing alleles between the parental populations; (3) reduced linkage disequilibrium (LD) between unlinked loci across chromosomes and strong LD between neighboring loci; (4) a set of markers with noticeable allele-frequency differences between parental populations that contributes to the admixed population (single nucleotide polymorphisms (SNPs) are the markers of choice because they are abundant, stable, relatively cheap to genotype, and informative with regard to the LD structure of chromosomal segments); and (5) there is an understanding of the extent of segmental chromosomal admixtures and their interactions with environmental factors. Although genome-wide association studies have contributed greatly to our understanding of the genetic components of asthma, the large and increasing degree of admixture in populations across the world create many challenges for further efforts to map disease-causing genes. This review, summarizes the historical context of admixed populations and AM, and considers current opportunities to use AM to map asthma genes. In addition, we provide an overview of the potential limitations and future directions of AM in biomedical research, including joint admixture and association mapping for asthma and asthma-related disorders.
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Affiliation(s)
- Tesfaye B Mersha
- Division of Asthma Research, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati Cincinnati, OH, USA
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Abstract
BACKGROUND Bronchial asthma is one of the most common chronic diseases in childhood, with a current prevalence of 6% to 9%, but a prevalence that is increasing at an alarming rate. Asthma is a complex genetic disorder with strong environmental influence. It imposes a growing burden on our society in terms of morbidity, quality of life, and healthcare costs. Despite large-scale efforts, only a few asthma genes have been confirmed, suggesting that the genetic underpinning of asthma is highly complex. METHODS A review of the literature was performed regarding atopic and nonatopic asthma risk factors, including environmental risk factors and genetic studies in adults and children. RESULTS Several environmental risk factors have been identified to increase the risk of developing asthma such as exposure to air pollution and tobaccos smoke as well as occupational risk factors. In addition atopy, stress, and obesity all can increases the risk for asthma in genetically susceptible persons. CONCLUSION Asthma represents a dysfunctional interaction with our genes and the environment to which they are exposed, especially in fetal and early infant life. The increasing prevalence of asthma in all age groups indicate that our living environment and immunity are in imbalance with each other reacting with airway inflammation to the environmental exposures and often non-harmful proteins, such as allergens causing the current "asthma and allergy epidemic." Because of the close relationship between asthma and chronic rhinosinusitis, it is important that otolaryngologists have a good understanding of asthma, the etiologic factors associated with disease, and its evaluation and management.
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Affiliation(s)
- Elina Toskala
- Department of Otorhinolaryngology–Head and Neck SurgeryTemple UniversityPhiladelphiaPA
| | - David W. Kennedy
- Department of Otorhinolaryngology–Head and Neck SurgeryPerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPA
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Vishweswaraiah S, Veerappa AM, Mahesh PA, Jahromi SR, Ramachandra NB. Copy number variation burden on asthma subgenome in normal cohorts identifies susceptibility markers. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2014; 7:265-75. [PMID: 25749760 PMCID: PMC4397367 DOI: 10.4168/aair.2015.7.3.265] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 08/08/2014] [Accepted: 08/18/2014] [Indexed: 12/16/2022]
Abstract
PURPOSE Asthma is a complex disease caused by interplay of genes and environment on the genome of an individual. Copy number variations (CNVs) are more common compared to the other variations that disrupt genome organization. The effect of CNVs on asthma subgenome has been less studied compared to studies on the other variations. We report the assessments of CNV burden in asthma genes of normal cohorts carried out in different geographical areas of the world and discuss the relevance of the observation with respect to asthma pathogenesis. METHODS CNV analysis was performed using Affymerix high-resolution arrays, and various bioinformatics tools were used to understand the influence of genes on asthma pathogenesis. RESULTS This study identified 61 genes associated with asthma and provided various mechanisms and pathways underlying asthma pathogenesis. CCL3L1, ADAM8, and MUC5B were the most prevalent asthma genes. Among them, CCL3L1 was found across all 12 populations in varying copy number states. This study also identified the inheritance of asthma-CNVs from parents to offspring creating the latent period for manifestation of asthma. CONCLUSIONS This study revealed CNV burden with varying copy number states and identified susceptibility towards the disease manifestation. It can be hypothesized that primary CNVs may not be the initiating event in the pathogenesis of asthma and additional preceding mutations or CNVs may be required. The initiator or primary CNVs sensitize normal cohorts leading to an increased probability of accumulating mutations or exposure to allergic stimulating agents that can augment the development of asthma.
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Affiliation(s)
- Sangeetha Vishweswaraiah
- Genetics and Genomics Lab, Department of Studies in Zoology, University of Mysore, Manasagangotri, Karnataka, India
| | - Avinash M Veerappa
- Genetics and Genomics Lab, Department of Studies in Zoology, University of Mysore, Manasagangotri, Karnataka, India
| | | | - Sareh R Jahromi
- Genetics and Genomics Lab, Department of Studies in Zoology, University of Mysore, Manasagangotri, Karnataka, India
| | - Nallur B Ramachandra
- Genetics and Genomics Lab, Department of Studies in Zoology, University of Mysore, Manasagangotri, Karnataka, India.
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Alizadeh-Navaei R, Rafiei A, Hedayatizadeh-Omran A, Mohammadzadeh I, Arabi M. Gene susceptibility in Iranian asthmatic patients: a narrative review. Ann Med Health Sci Res 2014; 4:837-40. [PMID: 25506473 PMCID: PMC4250978 DOI: 10.4103/2141-9248.144871] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
As environmental factors are important in the development of asthma, genetic factors could have a critical role in the expression of the disease. Hence, we carried out a systematic review to assess the susceptible genes for asthma in Iranian population. We conducted a literature search by using the electronic database PubMed, Biological Abstracts Web of Science, Current Contents Connect, Cinahl, ScienceDirect, Scopus, IranMedex, and Scientific Information Database to identify articles that evaluated the association between genetic variants and the risk of asthma in Iranian population (until April 30, 2012). The search terms were used include: Asthma and gene in combination with Iran for international database. The following criteria were used for selecting literatures in this review: The study should evaluate the association between gene polymorphism and risk of asthma in Iranian population, and the study should be a case-control design with normal subject as ac control group that published in a journal. Finally, 14 case-control studies were extracted from local and international database. In this study, we reviewed 38 polymorphisms in 19 genes. Polymorphism in interleukin-13 (IL-13), IL-10, IL-1, IL-2, IL-12, E-Selectin, S128R and Exon 9 Vitamin D Receptor were susceptible for asthma and polymorphism in chemokine receptor 5, transforming growth factor-a (TGF-a), Intron 8 of the Vitamin D Receptor, angiotensin-converting enzyme gene, IL-6 and interferon-c were not susceptible for asthma in Iranian population. Polymorphism in IL-4, tumor necrosis factor-α and TGF-b had inconsistent findings. This systematic review indicated that three polymorphisms (IL-13, IL-10, and IL-1) are associated with risk of asthma in Iranian population.
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Affiliation(s)
- R Alizadeh-Navaei
- Molecular and Cell Biology Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| | - A Rafiei
- Molecular and Cell Biology Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| | - A Hedayatizadeh-Omran
- Molecular and Cell Biology Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| | - I Mohammadzadeh
- Department of Community Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - M Arabi
- Non Communicable Pediatric Research Center, Babol University of Medical Sciences, Babol, Iran
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21
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Zemeckiene Z, Sitkauskiene B, Gasiuniene E, Paramonova N, Tamasauskiene L, Vitkauskiene A, Sjakste T, Sakalauskas R. Evaluation of proteasomal gene polymorphisms in Lithuanian patients with asthma. J Asthma 2014; 52:447-52. [PMID: 25375907 DOI: 10.3109/02770903.2014.982761] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE To investigate polymorphisms of proteasomal genes PSMA6 (rs1048990 and rs2277460), PSMC6 (rs2295826 and rs2295827) and PSMA3 (rs2348071) in Lithuanian patients with asthma. METHODS One-hundred forty-six asthma patients and 150 control subjects were studied. DNA was extracted from peripheral blood samples. Five single nucleotide polymorphisms (SNP's) of the three proteasomal genes were analyzed using allele-specific amplification or the cleaved amplified polymorphic sequence method. RESULTS While certain alleles and genotypes of PSMA6 rs2277460 and rs1048990 and PSMA3 rs2348071 SNP's occurred more frequently in asthma patients than in controls, no statistically significant differences in alleles or genotypes of PSMA6, PSMC6 or PSMA3 were observed between asthma patients and control subjects. However, when male and female study subjects were considered separately, we found that the CG genotype of PSMA6 rs1048990 is significantly more frequent in male asthma patients compared to male control subjects. CONCLUSIONS We found no significant differences in frequencies of selected five proteasomal gene PSMA6, PSMC6 and PSMA3 SNP's between asthma patients and control subjects overall. Among male subjects, however, the CG PSMA6 rs1048990 genotype was significantly more frequent in asthma patients compared with control subjects.
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Affiliation(s)
- Zivile Zemeckiene
- Department of Laboratory Medicine, Medical Academy, Lithuanian University of Health Sciences , Kaunas , Lithuania
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22
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Dai S, Yin K, Yao X, Zhou L. Inhibition of interleukin-13 gene expression by triptolide in activated T lymphocytes. Respirology 2014; 18:1249-55. [PMID: 23796028 DOI: 10.1111/resp.12145] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Revised: 04/01/2013] [Accepted: 04/28/2013] [Indexed: 12/25/2022]
Abstract
BACKGROUND AND OBJECTIVE Triptolide, a type of diterpenoid, is the active compound of Tripterygium wilfordii; it plays roles in anti-inflammatory and immune response regulation. Our objective was to investigate the mechanism of the inhibitory effect of triptolide on interleukin-13 (IL-13) gene expression in activated T lymphocytes. Understanding the molecular mechanism by which triptolide exerts a therapeutic function may be useful in developing a pharmaceutical treatment for asthma. METHODS Peripheral blood mononuclear cells (PBMC) and Hut-78 cells were stimulated with anti-CD3/CD28 with or without co-incubation with triptolide. The alteration of IL-13 messenger RNA (mRNA), expression and protein level were analysed using real-time reverse transcription polymerase chain reaction (PCR) and enzyme-linked immunosorbent assay, respectively. The intracellular distribution profile of transcription factor GATA3 and nuclear factor of activated T cells (NFAT1) were analysed by Western blotting. The binding rates of GATA3 and NFAT1 to the promoter sequence of IL-13 were analysed by chromatin immunoprecipitation (ChIP) PCR. RESULTS In PBMC, the release of IL-13 was dependent on anti-CD3/CD28 stimulation. Its release could be inhibited by triptolide at the concentration of 500 nmol. In Hut-78 cells, IL-13 mRNA and protein expression were increased with anti-CD3/CD28 stimulation and significantly inhibited by incubation with 28 nmol triptolide. This concentration of triptolide also significantly inhibited the nuclear translocation of GATA3 and NFAT1 reducing the binding rate to the IL-13 gene promoter. CONCLUSIONS Triptolide inhibits IL-13 gene transcription and protein expression by inhibiting GATA3 and NFAT1 nuclear translocation and their binding rates to the IL-13 gene promoter region.
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Affiliation(s)
- Shanlin Dai
- Department of Respiratory Disease, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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Xu J, Jiang P, Liu J. Pooled-analysis of the association between TIM-1 5383_5397 insertion/deletion polymorphism and asthma susceptibility. Mol Biol Rep 2014; 41:7825-31. [PMID: 25152377 DOI: 10.1007/s11033-014-3676-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Accepted: 08/19/2014] [Indexed: 10/24/2022]
Abstract
The T cell immunoglobulin (Ig) domain and mucin domain 1 (TIM-1) gene play an important role in pathogenesis of asthma. We investigate the association between the TIM-1 5383_5397 insertion/deletion polymorphism (rs45623443) and the risk of asthma in an asthma case-control study, and added these data to a literature-based meta-analysis. The TIM-1 5383_5397 insertion/deletion polymorphism genotype was analyzed in 156 asthma patients and 162 healthy subjects from Han Chinese population. We combined our data with that from previously published studies and performed a meta-analysis to evaluate the effect of the gene. Through regression model, we found no significant association for TIM-1 5383_5397 insertion/deletion polymorphism in our cohort. Meta-analysis, comprising a total of 1,577 asthma cases and 1,781 controls, revealed that no significant association between and asthma susceptibility was observed (OR = 0.99, 95 % CI = 0.83-1.20 for Ins vs. Del; OR = 1.01, 95 % CI = 0.74-1.37 for Ins/Ins vs. Ins/Del + Del/Del; OR = 0.96, 95 % CI = 0.78-1.18 for Ins/Ins + Ins/Del vs. Del/Del). The present meta-analysis suggested that TIM-1 5383_5397 insertion/deletion polymorphism may not substantially contribute to asthma susceptibility. However, gene-gene and gene-environment interaction effects and other considerations involving this polymorphism may exit.
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Affiliation(s)
- Jiangang Xu
- Department of Respiratory, Tianjin First Center Hospital, Tianjin, 300192, People's Republic of China,
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Wen D, Du X, Nie SP, Dong JZ, Ma CS. Association between RANTES gene polymorphisms and asthma: a meta-analysis. PLoS One 2014; 9:e90460. [PMID: 24963658 PMCID: PMC4070887 DOI: 10.1371/journal.pone.0090460] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Accepted: 01/30/2014] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND A few recent studies have suggested that regulated on activation, normal T cell expressed and secreted (RANTES) polymorphisms (-403 G/A, -28C/G) are associated with asthma. However, there still existed studies which did not confirm these correlations. OBJECTIVE The objective of this study was to evaluate the relationship of RANTES and asthma using a meta-analysis. METHODS Pubmed, Embase, and Cochrane library databases were systemically searched. Data were extracted by two independent reviewers and pooled odds ratio (OR) with 95% confidence interval (CI) were calculated. RESULTS Eighteen studies were enrolled, including a total of 2558 cases and 2630 controls of -403 G/A, as well as 3311 cases and 4031 controls of -28C/G in this meta-analysis. The overall ORs and 95% CIs of -403 G/A were 1.19, 1.06-1.33 (P<0.001) and 1.25, 1.03-1.51 (P = 0.933) in dominant and recessive models, respectively. The overall ORs and 95% CIs of -28G were 1.23, 1.09-1.39 (P = 0.221) and 1.76, 1.32-2.34 (P = 0.356) in dominant and recessive models, respectively. No publication bias among studies was showed. CONCLUSIONS This meta-analysis showed that RANTES -403 G/A polymorphism was a risk factor for asthma, while -28C/G polymorphism were not associated with asthma.
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Affiliation(s)
- Dan Wen
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Xin Du
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Shao-Ping Nie
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Jian-Zeng Dong
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Chang-Sheng Ma
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
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Li W, Holsinger RMD, Kruse CA, Flügel A, Graeber MB. The potential for genetically altered microglia to influence glioma treatment. CNS & NEUROLOGICAL DISORDERS-DRUG TARGETS 2014; 12:750-62. [PMID: 24047526 DOI: 10.2174/18715273113126660171] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2012] [Revised: 12/06/2012] [Accepted: 12/06/2012] [Indexed: 01/06/2023]
Abstract
Diffuse and unstoppable infiltration of brain and spinal cord tissue by neoplastic glial cells is the single most important therapeutic problem posed by the common glioma group of tumors: astrocytoma, oligoastrocytoma, oligodendroglioma, their malignant variants and glioblastoma. These neoplasms account for more than two thirds of all malignant central nervous system tumors. However, most glioma research focuses on an examination of the tumor cells rather than on host-specific, tumor micro-environmental cells and factors. This can explain why existing diffuse glioma therapies fail and why these tumors have remained incurable. Thus, there is a great need for innovation. We describe a novel strategy for the development of a more effective treatment of diffuse glioma. Our approach centers on gaining control over the behavior of the microglia, the defense cells of the CNS, which are manipulated by malignant glioma and support its growth. Armoring microglia against the influences from glioma is one of our research goals. We further discuss how microglia precursors may be genetically enhanced to track down infiltrating glioma cells.
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Affiliation(s)
- W Li
- Brain and Mind Research Institute, The University of Sydney, Camperdown, NSW, Australia.
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26
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Vali Z, Raz A, Bokharaei H, Nabavi M, Bemanian MH, Yazdi MS, Djadid ND. Development of a High-resolution Melting Analysis Method Based on SYBR Green-I for rs7216389 Locus Genotyping in Asthmatic Child Patients. Avicenna J Med Biotechnol 2014; 6:72-80. [PMID: 24834309 PMCID: PMC4009098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Accepted: 12/02/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Asthma is caused by the combination of different factors. Current concepts of asthma pathogenesis emphasize on gene-environment interactions. Mega-genome scanning projects revealed that different Single Nucleotide Polymorphisms (SNPs) are related to asthma susceptibility. rs7216389-T is one of them that is related to childhood asthma and its effect on childhood asthma severity has been proved in different nations, however no study has been performed in Eastern Mediterranean and Middle East countries yet. METHODS To perform population genetic studies, a rapid and high-throughput screening method is necessary. High-resolution melting analysis is a rapid, powerful and accurate method, which is suitable for this type of studies. Therefore, it has been decided to develop a high-resolution melting method for rs7216389 locus genotyping in Iranian asthmatic children. In the current study, a high-resolution melting analysis method based on SYBR Green-I was developed to check the frequency of rs7216389-T mutation in Iranian asthmatic children for the first time. RESULTS Second and third classes of intercalating dyes are commonly used for high-resolution melting method. However, in this study, SYBR Green-I was used for rs7216389 locus genotyping for the first time. Our results for 60 samples showed that SYBR Green-I has good efficacy for rs7216389 locus genotyping through high-resolution melting method in comparison with PCR-RFLP and sequencing. CONCLUSION Comparison of our results based on HRM analysis with PCR-RFLP showed that our developed method is rapid, accurate, high-throughput and economic to study the rs7216389 locus in asthmatic children and it is applicable for other similar population genetic studies.
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Affiliation(s)
- Zahra Vali
- Malaria and Vector Research Group (MVRG), Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran,Department of Pediatrics, Shahid Sadoughi Hospital, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Abbasali Raz
- Malaria and Vector Research Group (MVRG), Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran,Corresponding authors: Abbasali Raz, Ph.D., and Navid Dinparast Djadid, Ph.D., Malaria & Vector Research Group (MVRG), Biotechnology Research Center (BRC), Pasteur Institute of Iran, Tehran, Iran. Tel: +98 21 66480780, Fax: +98 21 66465132. E-mail:;
| | - Hanieh Bokharaei
- Malaria and Vector Research Group (MVRG), Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | - Mohammad Nabavi
- Department Allergy and Immunology, Hazrate Rasoul Akram Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Hassan Bemanian
- Department Allergy and Immunology, Hazrate Rasoul Akram Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Navid Dinparast Djadid
- Malaria and Vector Research Group (MVRG), Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran,Corresponding authors: Abbasali Raz, Ph.D., and Navid Dinparast Djadid, Ph.D., Malaria & Vector Research Group (MVRG), Biotechnology Research Center (BRC), Pasteur Institute of Iran, Tehran, Iran. Tel: +98 21 66480780, Fax: +98 21 66465132. E-mail:;
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Ricciardolo FLM, Sorbello V, Silvestri M, Giacomelli M, Debenedetti VMG, Malerba M, Ciprandi G, Rossi GA, Rossi A, Bontempelli M. TNF-alpha, IL-4R-alpha and IL-4 polymorphisms in mild to severe asthma from Italian Caucasians. Int J Immunopathol Pharmacol 2013; 26:75-84. [PMID: 23527710 DOI: 10.1177/039463201302600107] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Asthma is a chronic airway inflammatory disease associated with airway hyperresponsiveness which affects subjects with genetic predisposition. An association has been reported between some polymorphisms in various cytokine genes and asthma. Most of them are single nucleotide polymorphisms (SNPs). These polymorphisms are detected in the protein coding sequence or in the promoter region thus influencing cytokine production. We investigated the involvement of SNP mapping in 5 cytokine genes in mild to severe asthmatics of Italian Caucasians. The frequency of alleles and genotypes, relatively to 10 allelic specificities of the cytokine genes, was defined in 57 asthmatics and in 124 control subjects by a Polymerase Chain Reaction-Sequence Specific Primer method. TNF-alpha -308A and TNF-alpha -238A allele frequencies were higher in asthmatics than in controls (p less than 0.001). Significant differences in the frequency of IL-4 -590T allele and of IL-4Ralpha +1902A allele were also detected in asthmatics in comparison with controls (pless than 0.001 and p=0.005, respectively). Similarly, IL-1alpha -889C allele was present in 84.1 percent of asthmatics and in 70.2 percent of controls (p=0.013). Furthermore, the IL-4Ralpha +1902A/A and IL-1alpha -889C/C homozygous conditions and the TNF-alpha -308G/A, TNF-alpha -238G/A, IL-4 -590T/C and IL-10 -1082G/A heterozygous conditions were significantly associated with asthma (p less than 0.05). ACA haplotype of IL-10 was observed only in asthmatic patients. This study reports, for the first time, the frequency of 10 different single nucleotide polymorphisms in 5 cytokine genes in the Italian Caucasians. Furthermore, we also indicate that in our population some single nucleotide polymorphisms are associated with mild to severe bronchial asthma.
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Affiliation(s)
- F L M Ricciardolo
- Department of Clinical and Biological Sciences, University of Torino, Torino, Italy
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March ME, Sleiman PM, Hakonarson H. Genetic polymorphisms and associated susceptibility to asthma. Int J Gen Med 2013; 6:253-65. [PMID: 23637549 PMCID: PMC3636804 DOI: 10.2147/ijgm.s28156] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
As complex common diseases, asthma and allergic diseases are caused by the interaction of multiple genetic variants with a variety of environmental factors. Candidate-gene studies have examined the involvement of a very large list of genes in asthma and allergy, demonstrating a role for more than 100 loci. These studies have elucidated several themes in the biology and pathogenesis of these diseases. A small number of genes have been associated with asthma or allergy through traditional linkage analyses. The publication of the first asthma-focused genome-wide association (GWA) study in 2007 has been followed by nearly 30 reports of GWA studies targeting asthma, allergy, or associated phenotypes and quantitative traits. GWA studies have confirmed several candidate genes and have identified new, unsuspected, and occasionally uncharacterized genes as asthma susceptibility loci. Issues of results replication persist, complicating interpretation and making conclusions difficult to draw, and much of the heritability of these diseases remains undiscovered. In the coming years studies of complex diseases like asthma and allergy will probably involve the use of high-throughput next-generation sequencing, which will bring a tremendous influx of new information as well as new problems in dealing with vast datasets.
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Affiliation(s)
- Michael E March
- Center for Applied Genomics, Abramson Research Center of the Joseph Stokes Jr Research Institute, The Children's Hospital of Philadelphia
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Blekic M, Kljaic Bukvic B, Aberle N, Marinho S, Hankinson J, Custovic A, Simpson A. 17q12-21 and asthma: interactions with early-life environmental exposures. Ann Allergy Asthma Immunol 2013; 110:347-353.e2. [PMID: 23622005 DOI: 10.1016/j.anai.2013.01.021] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Revised: 01/28/2013] [Accepted: 01/28/2013] [Indexed: 10/27/2022]
Abstract
BACKGROUND 17q12-21 polymorphisms are associated with asthma presence and severity across different populations. OBJECTIVE To extensively investigate the genes in this region among Croatian schoolchildren in a case-control study, taking account of early-life environmental exposures. METHODS We included 423 children with asthma and 414 controls aged 5 to 18 years. Fifty-one haplotype tagging single-nucleotide polymorphisms (SNPs) were genotyped (GSDMA, GSDMB, ORMDL3, IKZF3, ZPBP2, and TOP2). Data on exposure to smoking and furry pet ownership were collected using a validated questionnaire. Information on severe asthma exacerbations with hospital admission were retrieved from hospital notes. All patients underwent spirometry. RESULTS We found 2 SNPs (1 novel rs9635726 in IKZF3) to be associated with asthma. Among children with asthma, 4 SNPs (in ZPBP2, GSDMB, and GSDMA) were associated with hospital admissions and 8 SNPs with lung function. One SNP (rs9635726) remained significantly associated with a predicted forced expiratory volume in 1 second after false discovery rate correction. Nine markers across 5 genes showed interaction with early-life environmental tobacco smoke (ETS) exposure in relation to asthma and 2 with furry pet ownership. Among children with asthma, we observed significant interactions between early-life ETS exposure and 3 SNPs for lung function and among early-life ETS exposure, 3 SNPs (in ORMDL3 and GSDMA), and hospital admission with asthma exacerbation. Three SNPs (in ORMDL3) interacted with current furry pet ownership in relation to hospital admissions for asthma exacerbation. CONCLUSION Our results indicate that several genes in the 17q12-21 region may be associated with asthma. This study confirms that environmental exposures may need to be included into the genetic association studies.
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Affiliation(s)
- Mario Blekic
- General Hospital Dr Josip Bencevic Slavonski Brod, University of Osijek, Osijek, Croatia
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Yang HJ. Association between the interleukin-4 gene C-589T and C+33T polymorphisms and asthma risk: a meta-analysis. Arch Med Res 2013; 44:127-35. [PMID: 23398789 DOI: 10.1016/j.arcmed.2013.01.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2012] [Accepted: 01/18/2013] [Indexed: 10/27/2022]
Abstract
BACKGROUND AND AIMS A large number of studies have investigated the correlation between the interleukin (IL)-4 C-589T and C+33T polymorphisms and asthma susceptibility. However, the results are inconsistent. The objective of this study is to explore the association between the IL-4 C-589T and C+33T polymorphisms and asthma risk using meta-analysis. METHODS A total of 35 studies (31 concerning C-589T polymorphism and asthma risk with 4737 asthmatics and 6389 controls and 14 studies regarding C+33T polymorphism and asthma risk with 2544 asthmatics and 4049 controls) were included in this meta-analysis. RESULTS The IL-4 C-589T polymorphism was associated with increased asthma risk in a dominant genetic model (odds ratio [OR] [95% confidence interval (CI)] = 1.284 [1.131-1.459] for TT + TC vs. CC). In the subgroup analyses by ethnicity, age and atopic status of asthmatics, significantly increased risks of asthma were found both in Asians (OR [95% CI] = 1.301 [1.003-1.689]) and Caucasians (OR [95% CI] = 1.314 [1.061-1.628]) and in both adults (OR [95% CI] = 1.299 [1.098-1.537]) and children (OR [95% CI] = 1.464 [1.044-2.052]). As for the C+33T polymorphism, the results showed that it was correlated with elevated asthma risk in a recessive genetic model (OR [95% CI] = 1.744 [1.215-2.504] for TT vs. CT + CC). After stratifying analyses by ethnicity, age and atopic status of asthmatics, significantly increased asthma risks were observed in Asians (OR [95% CI] = 1.223 [1.037-1.442]), Caucasians (OR [95% CI] = 3.036 [1.224-7.529]), and children (OR [95% CI] = 1.300 [1.075-1.573]) in a recessive genetic model. CONCLUSIONS This meta-analysis suggests that the IL-4 C-589T and C+33T polymorphisms may be risk factors for asthma.
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Affiliation(s)
- Hai-Jun Yang
- Department of Preventive Medicine, College of Basic Medical Sciences, Hubei University of Chinese Medicine, Wuhan, PR China.
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Beta 2 adrenergic receptor polymorphisms, at codons 16 and 27, and bronchodilator responses in adult Venezuelan asthmatic patients. Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub 2012; 157:374-8. [PMID: 23128817 DOI: 10.5507/bp.2012.084] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2012] [Accepted: 07/27/2012] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND One of the gene polymorphisms often studied in asthmatic patients is the β2 adrenergic receptor (ADRβ2). Even though in the Venezuelan Mestizo population there is a high incidence of asthma, there are no direct reports of ADRβ2 gene polymorphism, and treatment response. The aim of this study was to assess, in this population, the gene frequency of ADRβ2 polymorphisms at codons 16 Arg/Gly and 27 Gln/Glu, allergen sensitization, and its relationship to bronchodilator response. METHODS Purified genomic DNA was obtained form 105 Mestizo asthmatic and 100 Mestizo healthy individuals from Venezuela. The two polymorphisms were assessed by PCR-RFLP. Patient sensitization to aeroallergens and their response to bronchodilatation were correlated. RESULTS Significant differences between patients and controls were recorded in: 1) the prevalence of Arg/Arg at codon 16 (28.6% in patients vs. 47% in controls, P<0.01), 2) the frequency of heterozygotes Arg/Gly (55% in patients vs. 35% in controls, P<0.01). Conversely, no differences in polymorphism frequencies were found at codon 27. The haplotypes Arg/Gly-Gln/Gln were more common in patients than controls (P <0.01), whereas the Arg/Arg-Gln/Glu combination prevailed in the control group (P<0.01). The Arg/Gly and Gln/Glu genotypes were associated with better responses after salbutamol. The asthmatic homozygotes Arg/Arg have higher sensitivity to aeroallergens. CONCLUSION The difference in Arg/Arg frequency between groups suggests that this could be a protective genotype although the asthmatic group had a higher sensitivity to aeroallergens. The asthmatic heterozygotes had better bronchodilator responses than the homozygotes.
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Sharma N, Tripathi P, Awasthi S. Role of ADAM33 gene and associated single nucleotide polymorphisms in asthma. ALLERGY & RHINOLOGY 2012; 2:e63-70. [PMID: 22852121 PMCID: PMC3390120 DOI: 10.2500/ar.2011.2.0018] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Asthma is a multifactorial disorder, primarily resulting from interactions between genetic and environmental factors. ADAM33 gene (located on chromosome 20p13) has been reported to play an important role in asthma. This review article is intended to include all of the publications, to date, which have assessed the association of ADAM33 gene polymorphisms as well as have shown the role of ADAM33 gene in airway remodeling and their expression with asthma. A PubMed search was performed for studies published between 1990 and 2010. The terms “ADAM33,” “ADAM33 gene and asthma,” and “ADAM33 gene polymorphisms” were used as search criteria. Based on available literature we can only speculate its role in the morphogenesis and functions of the lung. Fourteen studies conducted in different populations were found showing an association of ADAM33 gene polymorphisms with asthma. However, none of the single nucleotide polymorphisms (SNPs) of ADAM33 gene had found association with asthma across all ethnic groups. Because higher expression of ADAM33 is found in the fibroblast and smooth muscle cells of the lung, over- or underexpression of ADAM33 gene may result in alterations in airway remodeling and repair processes. However, no SNP of ADAM33 gene showed significant associations with asthma across all ethnic groups; the causative polymorphism, if any, still has to be identified.
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Affiliation(s)
- Neeraj Sharma
- Department of Pediatrics, Chhatrapati Shahuji Maharaj Medical University, Lucknow, Uttar Pradesh, India
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Morihana T, Goya S, Mizui M, Yasui T, Prasad DVR, Kumanogoh A, Tamura M, Shikina T, Maeda Y, Iwamoto Y, Inohara H, Kikutani H. An inhibitory role for Sema4A in antigen-specific allergic asthma. J Clin Immunol 2012; 33:200-9. [PMID: 23007237 DOI: 10.1007/s10875-012-9798-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2012] [Accepted: 09/10/2012] [Indexed: 03/08/2023]
Abstract
PURPOSE The class IV semaphorin Sema4A is critical for efficient Th1 differentiation and Sema4a (-/-) mice exhibit impaired Th1 immune responses. However, the role of Sema4A in Th2 cell-mediated allergic diseases has not been fully studied. The aim of this study was to clarify the regulatory role possessed by Sema4A in mouse models of allergic diseases, particularly allergic asthma. METHODS Sema4a (-/-) mice on a BALB/c background were examined for the development of allergic diseases. To induce experimental asthma, mice were sensitized with ovalbumin (OVA) followed by intranasal challenges with OVA. After challenge, airway hyperreactivity (AHR) and airway inflammation were evaluated. The role of Sema4A in asthma was examined using Sema4a (-/-) mice and Sema4A-Fc fusion proteins. The direct effects of Sema4A-Fc on antigen-specific effector CD4(+) T cells were also examined. RESULTS A fraction of Sema4a (-/-) BALB/c mice spontaneously developed skin lesions that resembled atopic dermatitis (AD) in humans. Furthermore, AHR, airway inflammation, and Th2-type immune responses were enhanced in Sema4a (-/-) mice compared to wild type (WT) mice when immunized and challenged with OVA. In vivo systemic administration of Sema4A-Fc during the challenge period ameliorated AHR and lung inflammation and reduced the production of Th2-type cytokines in WT mice. The inhibitory effects of Sema4A on airway inflammation were also observed in mice deficient in Tim-2, a Sema4A receptor. Finally, we showed that Sema4A-Fc directly inhibited IL-4-producing OVA-specific CD4(+) T cells. CONCLUSION These results demonstrate that Sema4A plays an inhibitory role in Th2-type allergic diseases, such as allergic asthma.
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Affiliation(s)
- Tetsuo Morihana
- Department of Molecular Immunology, Research Institute for Microbial Diseases, WPI Immunology Frontier Research Center (IFReC), Osaka University, 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
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Lu YM, Cao LF, Li YQ, Li C. RANTES gene polymorphisms and risk of pediatric asthma: A meta-analysis. Exp Ther Med 2012; 4:918-922. [PMID: 23226749 PMCID: PMC3493796 DOI: 10.3892/etm.2012.684] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Accepted: 08/07/2012] [Indexed: 11/05/2022] Open
Abstract
Numerous studies have evaluated the association between regulated upon activation, normal T cells expressed and secreted (RANTES) gene polymorphisms (-403G/A and -28C/G) and risk of pediatric asthma. However, the results have been inconsistent. A meta-analysis of the association between RANTES gene polymorphisms and pediatric asthma risk was performed in the current study. A search for published literature was conducted in the Google Scholar, PubMed and the CNKI databases (January 2000 to April 2012) and seven studies were retrieved. The associations between RANTES gene polymorphisms and pediatric asthma risk were estimated by pooled odds ratio (OR) and 95% confidence interval (CI) using a fixed- or random-effects model. Meta-analysis results revealed no significant association between the -403G/A polymorphism and risk of pediatric asthma. In the subgroup analysis by ethnicity, no association was identified between the -403G/A polymorphism and pediatric asthma risk in Caucasian and Asian populations. In the -28C/G group, the meta-analysis indicated a significant association between the -28C/G polymorphism and pediatric asthma susceptibility among the total population (recessive model: OR, 1.34; 95% CI, 1.04-1.72). However, when the subgroup analysis was performed by ethnicity, no significant associations were identified in Asians and Europeans. This result suggests that the -28C/G polymorphism may not be associated with pediatric asthma risk, while the observed increase in the risk of pediatric asthma may be due to racial differences. Additional large-scale studies are required to provide conclusive evidence on the effects of RANTES gene polymorphisms on the risk of pediatric asthma.
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Affiliation(s)
- Yan-Ming Lu
- Department of Pediatrics, Renji Hospital Affiliated to Medical School, Shanghai Jiaotong University, Shanghai 200001, P.R. China
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Randhawa V, Bagler G. Identification of SRC as a potent drug target for asthma, using an integrative approach of protein interactome analysis and in silico drug discovery. OMICS-A JOURNAL OF INTEGRATIVE BIOLOGY 2012; 16:513-26. [PMID: 22775150 DOI: 10.1089/omi.2011.0160] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Network-biology inspired modeling of interactome data and computational chemistry have the potential to revolutionize drug discovery by complementing conventional methods. We consider asthma, a complex disease characterized by intricate molecular mechanisms, for our study. We aim to integrate prediction of potent drug targets using graph-theoretical methods and subsequent identification of small molecules capable of modulating activity of the best target. In this work, we construct the protein interactome underlying this disease: Asthma Protein Interactome (API). Using a strategy based on network analysis of the interactome, we identify a set of potential drug targets for asthma. Topologically and dynamically, v-src sarcoma (Schmidt-Ruppin A-2) viral oncogene homolog (SRC) emerges as the most central target in API. SRC is known to play an important role in promoting airway smooth muscle cell growth and facilitating migration in airway remodeling. From interactome analysis, and with the reported role in respiratory mechanisms, SRC emerges as a promising drug target for asthma. Further, we proceed to identify leads for SRC from a public database of small molecules. We predict two potential leads for SRC using ligand-based virtual screening methodology.
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Affiliation(s)
- Vinay Randhawa
- Biotechnology Division, Institute of Himalayan Bioresource Technology, Council of Scientific and Industrial Research (CSIR-IHBT), Palampur, India
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Martin LJ, Gupta J, Jyothula SSSK, Butsch Kovacic M, Biagini Myers JM, Patterson TL, Ericksen MB, He H, Gibson AM, Baye TM, Amirisetty S, Tsoras AM, Sha Y, Eissa NT, Hershey GKK. Functional variant in the autophagy-related 5 gene promotor is associated with childhood asthma. PLoS One 2012; 7:e33454. [PMID: 22536318 PMCID: PMC3335039 DOI: 10.1371/journal.pone.0033454] [Citation(s) in RCA: 129] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2011] [Accepted: 02/15/2012] [Indexed: 11/20/2022] Open
Abstract
RATIONALE AND OBJECTIVE Autophagy is a cellular process directed at eliminating or recycling cellular proteins. Recently, the autophagy pathway has been implicated in immune dysfunction, the pathogenesis of inflammatory disorders, and response to viral infection. Associations between two genes in the autophagy pathway, ATG5 and ATG7, with childhood asthma were investigated. METHODS Using genetic and experimental approaches, we examined the association of 13 HapMap-derived tagging SNPs in ATG5 and ATG7 with childhood asthma in 312 asthmatic and 246 non-allergic control children. We confirmed our findings by using independent cohorts and imputation analysis. Finally, we evaluated the functional relevance of a disease associated SNP. MEASUREMENTS AND MAIN RESULTS We demonstrated that ATG5 single nucleotide polymorphisms rs12201458 and rs510432 were associated with asthma (p = 0.00085 and 0.0025, respectively). In three independent cohorts, additional variants in ATG5 in the same LD block were associated with asthma (p<0.05). We found that rs510432 was functionally relevant and conferred significantly increased promotor activity. Furthermore, Atg5 expression was increased in nasal epithelium of acute asthmatics compared to stable asthmatics and non-asthmatic controls. CONCLUSION Genetic variants in ATG5, including a functional promotor variant, are associated with childhood asthma. These results provide novel evidence for a role for ATG5 in childhood asthma.
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MESH Headings
- Adolescent
- Asthma/genetics
- Asthma/metabolism
- Asthma/pathology
- Autophagy-Related Protein 5
- Autophagy-Related Protein 7
- Case-Control Studies
- Child
- Child, Preschool
- Female
- Gene Frequency
- Genes, Reporter
- Genetic Association Studies
- HEK293 Cells
- Haplotypes
- Humans
- Linkage Disequilibrium
- Luciferases, Firefly/biosynthesis
- Luciferases, Firefly/genetics
- Luciferases, Renilla/biosynthesis
- Luciferases, Renilla/genetics
- Male
- Microtubule-Associated Proteins/genetics
- Microtubule-Associated Proteins/metabolism
- Nasal Mucosa/metabolism
- Polymorphism, Single Nucleotide
- Promoter Regions, Genetic
- Sequence Analysis, DNA
- Transcription, Genetic
- Ubiquitin-Activating Enzymes/genetics
- Ubiquitin-Activating Enzymes/metabolism
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Affiliation(s)
- Lisa J. Martin
- Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Jayanta Gupta
- Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Soma S. S. K. Jyothula
- Department of Medicine, Baylor College of Medicine, Houston, Texas, United States of America
| | - Melinda Butsch Kovacic
- Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Jocelyn M. Biagini Myers
- Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Tia L. Patterson
- Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Mark B. Ericksen
- Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Hua He
- Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Aaron M. Gibson
- Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Tesfaye M. Baye
- Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Sushil Amirisetty
- Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Anna M. Tsoras
- Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Youbao Sha
- Department of Medicine, Baylor College of Medicine, Houston, Texas, United States of America
| | - N. Tony Eissa
- Department of Medicine, Baylor College of Medicine, Houston, Texas, United States of America
| | - Gurjit K. Khurana Hershey
- Department of Pediatrics, Cincinnati Children’s Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
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Ding YP, Yao HX, Tang XL, He HW, Shi HF, Lin L, Li M, Chen S, Chen J, Wang HJ. An epidemiology study of bronchial asthma in the Li ethnic group in China. ASIAN PAC J TROP MED 2012; 5:157-61. [PMID: 22221762 DOI: 10.1016/s1995-7645(12)60016-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2011] [Revised: 12/15/2011] [Accepted: 01/15/2012] [Indexed: 11/25/2022] Open
Abstract
OBJECTIVE To investigate the prevalence and risk factors of bronchial asthma in the Li ethnic group in Hainan, China. METHODS This study employed a stratified random sample design using custom-designed questionnaires. Subjects with asthma-like symptoms were first identified by two rounds of surveys and then confirmed by respiratory physicians using pulmonary function test, bronchial dilation test and challenge test. Demographic data, information on family history of asthma, history of allergies, smoking habits, domestic cooking fuel and other potential risk factors were collected. Logistic regression was performed to evaluate risk factors for asthma. RESULTS The prevalence of asthma in the Li ethnic group was 3.38%, much higher than the national average level in China. Aging, agriculture industry (the rubber industry in particular), rural residence, family history of asthma, history of allergies, cold air, inhalation of dust and irritant gases, smoking, domestic cooking fuel and living environment were associated with increased risk of asthma. CONCLUSIONS The high prevalence of asthma in the Li ethnic group highlights the importance of asthma prevention and treatment in this population. Risk factors indentified in this study warrant special attention. Elevating public awareness about asthma in local communities will benefit the prevention of the disease.
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Affiliation(s)
- Yi-Peng Ding
- Emergency Department of Hainan Provincial People's Hospital, Haikou, Hainan, China
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Rigoli L, Briuglia S, Caimmi S, Ferraú V, Gallizzi R, Leonardi S, La Rosa M, Salpietro C. Gene-environment interaction in childhood asthma. Int J Immunopathol Pharmacol 2011; 24:41-7. [PMID: 22032786 DOI: 10.1177/03946320110240s409] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The importance of early life environmental influences on the etiology of asthma is implied by the observed geographic and temporal variation in the prevalence of the disease among children. There is evidence pointing to the role of exposure to allergen, various aspects of diet and hygiene-related factors in the etiology of asthma. There is also evidence that heritable factors influence the impact of hygiene-related exposures on the risk of having asthma. A number of important gene-environment interactions have been identified. These interactions point to the biology of environmental exposures as the involved genetic variation is suggestive of certain underlying mechanisms. Polymorphisms within genes coding for the toll-like receptor-lipopolysaccharide (TLR-LPS) signalling pathway may underlie variations in effects of hygiene-related exposures, including specifically endotoxin, on the risk of developing allergic sensitization and allergic disease. This review presents recent findings illustrating the role of gene-environment interactions in childhood asthma susceptibility.
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Affiliation(s)
- L Rigoli
- Department of Pediatrics, Unit of Pediatric Genetics and Immunology, University of Messina, Italy.
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Wang DY. Genetic predisposition for atopy and allergic rhinitis in the Singapore Chinese population. Asia Pac Allergy 2011; 1:152-6. [PMID: 22053312 PMCID: PMC3206245 DOI: 10.5415/apallergy.2011.1.3.152] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2011] [Accepted: 09/08/2011] [Indexed: 11/12/2022] Open
Abstract
The prevalence of allergic diseases is high globally, but especially in developed countries, with one in five to one in four individuals affected worldwide. The World Health Organization's "Allergic Rhinitis and its Impact on Asthma 2008 Update" guidelines stated explicitly that over 600 million patients from all countries, all ethnic groups and all ages suffer from allergic rhinitis (AR). There are clear evidences to support the concept that allergic diseases are influenced by genetic predisposition and environmental factors. The genetic basis of AR has been evaluated more intensively in the recent 10-20 years. Advances in technology and statistical methods, such as genome-wide association studies (GWAS) have enabled millions of single nucleotide polymorphisms (SNPs) to be genotyped at rapid pace and for less cost. However these studies have not yet answered the entire heritability profile of the disease. Additionally, environmental influences on these genetic variants cannot be discounted. Hence these allergic diseases must be evaluated as a complex interplay between genetic and environmental factors. This review focuses on the genetic basis of AR, with special emphasis on studies performed in Singapore. Candidate gene based studies and GWAS performed in Singapore cohorts have been discussed to suggest how these diseases could be understood better in a Singapore context which is still applicable to research in AR globally.
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Affiliation(s)
- De Yun Wang
- Department of Otolaryngology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore
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Schuurhof A, Janssen R, de Groot H, Hodemaekers HM, de Klerk A, Kimpen JL, Bont L. Local interleukin-10 production during respiratory syncytial virus bronchiolitis is associated with post-bronchiolitis wheeze. Respir Res 2011; 12:121. [PMID: 21910858 PMCID: PMC3179726 DOI: 10.1186/1465-9921-12-121] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2011] [Accepted: 09/12/2011] [Indexed: 01/11/2023] Open
Abstract
Background Respiratory syncytial virus (RSV) is the most common cause of bronchiolitis in infants. Following RSV bronchiolitis, 50% of children develop post-bronchiolitis wheeze (PBW). Animal studies have suggested that interleukin (IL)-10 plays a critical role in the pathogenesis of RSV bronchiolitis and subsequent airway hyperresponsiveness. Previously, we showed that ex vivo monocyte IL-10 production is a predictor of PBW. Additionally, heterozygosity of the single-nucleotide polymorphism (SNP) rs1800872 in the IL10 promoter region was associated with protection against RSV bronchiolitis. Methods This study aimed to determine the in vivo role of IL-10 in RSV pathogenesis and recurrent wheeze in a new cohort of 235 infants hospitalized for RSV bronchiolitis. IL-10 levels in nasopharyngeal aspirates (NPAs) were measured at the time of hospitalization and the IL10 SNP rs1800872 genotype was determined. Follow-up data were available for 185 children (79%). Results Local IL-10 levels during RSV infection turned out to be higher in infants that later developed physician diagnosed PBW as compared to infants without PBW in the first year after RSV infection (958 vs 692 pg/ml, p = 0.02). The IL10 promoter SNP rs1800872 was not associated with IL-10 concentration in NPAs. Conclusion The relationship between high local IL-10 levels during the initial RSV infection and physician diagnosed PBW provides further evidence of the importance of the IL-10 response during RSV bronchiolitis.
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Affiliation(s)
- Annemieke Schuurhof
- Laboratory for Health Protection Research, National Institute for Public Health and the Environment, Postbak 12 GBO, P.O.BOX 1, 3720 BA Bilthoven, The Netherlands
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Obeidat M, Hall IP. Genetics of complex respiratory diseases: implications for pathophysiology and pharmacology studies. Br J Pharmacol 2011; 163:96-105. [PMID: 21232051 DOI: 10.1111/j.1476-5381.2011.01222.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
There has been a huge influx of data on the genetics and genomics of respiratory diseases in the last few years. Powered by large sample sizes from collaborations worldwide, recent genome-wide association studies have convincingly implicated variants in different regions in the genome for association with complex respiratory traits. These new associations have the potential to offer invaluable insight into the pathophysiology of the normal and diseased respiratory system. The functional mechanisms underlying effects of both identified and novel variants will be the focus of research over the next few years. The identification of these mechanisms will not only increase our understanding of disease but may allow the development of new therapies to alleviate respiratory conditions. The implications of these approaches for studies of asthma and Chronic Obstructive Pulmonary Disease are covered in this review.
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Affiliation(s)
- Ma'en Obeidat
- Division of Therapeutics and Molecular Medicine, Nottingham Respiratory Biomedical Research Unit, University of Nottingham, UK
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Reibman J, Liu M. Genetics and asthma disease susceptibility in the US Latino population. ACTA ACUST UNITED AC 2011; 77:140-8. [PMID: 20309924 DOI: 10.1002/msj.20171] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The US Latino population is heterogeneous with diversity in environmental exposures and socioeconomic status. Moreover, the US Hispanic population derives from numerous countries previously under Spanish rule, and many Hispanics have complex proportions of European, Native American, and African ancestry. Disparities in asthma severity and control are due to complex interactions between environmental exposures, socioeconomic factors, and genetic variations. In addition, diseases within the Latino community may also differ by country of origin. Although US Census data show low asthma rates in the Hispanic population as a whole, there is a lot of variability in the prevalence and morbidity of asthma, with a prevalence of 5.0% in Mexican Americans versus 17.0% in Puerto Ricans. The diversity and population admixture make the study of the genetics of asthma complex in Latino populations. However, an understanding of the genetics of asthma in all populations, including the Latino population, can enhance risk identification, help us to target pharmacological therapy, and guide environmental regulations, all of which can promote a reduction in health disparities. The inclusion of markers of ancestral diversity and the incorporation of techniques to adjust for stratification now make these studies feasible in complex populations, including the Latino population. To date, studies using linkage analyses, genome-wide associations, or candidate gene analyses have identified an association of asthma or asthma-related phenotypes with candidate genes, including interleukin 13, beta-2 adrenergic receptor, a disintegrin and metalloproteinase 33, orosomucoid 1-like 3, and thymic stromal lymphopoietin. As reviewed here, although these genes have been identified in diverse populations, limited studies have been performed in Latino populations, and they have had variable replication. There is a need for the development of registries with well-phenotyped pediatric and adult Latino populations and subgroups for inclusion in the rapidly expanding field of genetic studies, and these studies need to be used to reduce health disparities.
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Affiliation(s)
- Joan Reibman
- New York University School of Medicine, New York, NY, USA.
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Jamrozik EF, Warrington N, McClenaghan J, Hui J, Musk AW, James A, Beilby JP, Hansen J, DE Klerk NH, Palmer LJ. Functional haplotypes in the PTGDR gene fail to associate with asthma in two Australian populations. Respirology 2011; 16:359-66. [PMID: 21199159 DOI: 10.1111/j.1440-1843.2010.01917.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
BACKGROUND AND OBJECTIVE Haplotypes in the promoter region of the prostanoid DP receptor (PTGDR) gene have been shown to functionally influence gene transcription and to be associated with asthma in two previous case-control studies in Caucasians. This study tested the association of PTGDR haplotypes with asthma phenotypes in two large Caucasian-Australian populations. These results were incorporated in a meta-analysis with previously published data to determine the overall role for these haplotypes in the risk of asthma. METHODS Three PTGDR promoter-region single nucleotide polymorphisms (SNP) were genotyped in 368 individuals from the Western Australian Twin Child Health study and 2988 individuals from the Busselton Health Study. Logistic regression and transition disequilibrium tests were used to assess whether SNP genotypes and three SNP haplotypes were associated with doctor-diagnosed asthma or intermediate quantitative traits. Longitudinal data from the Busselton Health Study were used to examine whether PTGDR influences changes in lung function over time. Meta-analysis incorporated the findings of this study with those of two previous studies in Caucasian populations. RESULTS Cross-sectional associations between PTGDR haplotypes and asthma phenotypes were non-significant (P > 0.05) in both populations. Longitudinal analyses of PTGDR and lung function were also non-significant. Meta-analysis, however, suggested that haplotype TCT was significantly associated with decreased risk of asthma (OR = 0.76; P = 0.02) while haplotype CCC was not significantly associated with asthma (OR = 1.30; P = 0.07). CONCLUSIONS These results suggest that despite the non-significant findings in the present study populations, PTGDR promoter haplotypes may account for a small but significant proportion of the risk of asthma in Caucasian populations.
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Affiliation(s)
- Euzebiusz F Jamrozik
- Centre for Genetic Epidemiology and Biostatistics, University of Western Australia, West Perth, Western Australia, Australia.
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Chen T, Liang W, Gao L, Wang Y, Liu Y, Zhang L, Zhang L. Association of single nucleotide polymorphisms in interleukin 12 (IL-12A and -B) with asthma in a Chinese population. Hum Immunol 2011; 72:603-6. [PMID: 21513752 DOI: 10.1016/j.humimm.2011.03.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2010] [Revised: 03/22/2011] [Accepted: 03/31/2011] [Indexed: 11/29/2022]
Abstract
Increasing evidence has indicated that genetic variants may contribute to immune dysregulation and susceptibility to noninfectious inflammatory diseases. Cytokines, including interleukin 12 (IL-12), play a key role in the regulation of the immune system. The aim of this study was to investigate whether single nucleotide polymorphisms (SNP) in IL-12A and IL-12B were associated with asthma in a Chinese population. Genotype characteristics were determined in 197 asthma patients and 369 controls by the polymerase chain reaction-restriction fragment length polymorphism method and DNA sequencing assay. The genotype and allele frequencies of IL-12A rs568408 demonstrated significant differences between cases and controls (p < 0.001). The AC genotype of rs3212227 was associated with a significantly decreased risk of asthma compared with the AA genotype (p = 0.036). The subjects carrying combined genotypes (rs568408 AG and rs3212227 AC/CC) at both loci had a 2.05-fold increased asthma risk compared with those carrying all other genotypes (p = 0.001). In contrast, individuals carrying combined genotypes of rs568408 GG and rs3212227 AC/CC were associated with a significantly decreased risk of asthma compared with those carrying the combined genotypes of rs568408GG and rs3212227AA (p = 0.009). No significant difference was reported for rs2243115 between cases and controls. These results suggest that the SNPs in IL-12A rs568404 and IL-12B rs3212227 may individually and jointly contribute to the risk of asthma in a Chinese population.
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Affiliation(s)
- Tianyi Chen
- Department of Forensic Biology, West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu, China
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Kotani H, Kishi R, Mouri A, Sashio T, Shindo J, Shiraki A, Hiramatsu T, Iwata S, Taniguchi H, Nishiyama O, Iwata M, Suzuki R, Gonda H, Niwa T, Kondo M, Hasegawa Y, Kume H, Noda Y. Influence of leukotriene pathway polymorphisms on clinical responses to montelukast in Japanese patients with asthma. J Clin Pharm Ther 2011; 37:112-6. [PMID: 21385196 DOI: 10.1111/j.1365-2710.2011.01248.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
WHAT IS KNOWN AND OBJECTIVE Montelukast, a cysteinyl leukotriene receptor 1 antagonist, is safe and efficacious in patients with asthma. The mechanisms underlying the significant interpatient variability in response to montelukast are not clear but are believed to be, in part, because of genetic variability. METHODS To examine the associations between polymorphisms in candidate genes in the leukotriene pathway and outcomes in patients with asthma on montelukast for 4-8 weeks, we evaluated the changes in peak expiratory flow (PEF), forced expiratory volume in 1 s (FEV(1·0) ) and patients' subjective symptom before and after montelukast treatment. DNA was collected from 252 Japanese participants. RESULTS AND DISCUSSION Two single-nucleotide polymorphisms (SNPs) in the ALOX5 (rs2115819) and LTA4H (rs2660845) genes were successfully typed. There was no difference between members of the general population (n = 200) and patients (n = 52) in each genotype frequency. Significant associations were found between SNP genotypes in the LTA4H gene and changes in PEF and FEV(1·0) . The PEF and FEV(1·0) responses to montelukast in the A/A genotypes (n = 4) for the LTA4H SNP were significantly higher than those in the G allele carriers (A/G+G/G) (n = 17). WHAT IS NEW AND CONCLUSION Despite the small sample size, our results suggest that genetic variation in leukotriene pathway candidate genes contributes to variability in clinical responses to montelukast in Japanese patients with asthma.
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Affiliation(s)
- H Kotani
- Division of Clinical Sciences and Neuropsychopharmacology, Meijo University Graduate School of Pharmaceutical Sciences, Nagoya, Japan
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Jiang X. The emerging role of microRNAs in asthma. Mol Cell Biochem 2011; 353:35-40. [PMID: 21380724 DOI: 10.1007/s11010-011-0771-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2010] [Accepted: 02/24/2011] [Indexed: 12/21/2022]
Abstract
Asthma is a common chronic airways disease that worldwide affects people from all ethnic backgrounds. MicroRNAs (miRNAs) are small non-coding RNAs of 18-25 nucleotides that have been shown to regulate gene expression via the RNA interference pathway and found to play fundamental roles in diverse biological and pathological processes. Intriguingly, changes in the expression of several miRNAs are associated with development of asthma. In this review, we summarize the current understanding of the role of miRNAs in asthma to both better understand the pathogenesis of this disease and aid in the formulation of more effective therapeutic strategies.
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Affiliation(s)
- Xiaoying Jiang
- Department of Genetics and Molecular Biology, School of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, China.
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Baye TM, Butsch Kovacic M, Biagini Myers JM, Martin LJ, Lindsey M, Patterson TL, He H, Ericksen MB, Gupta J, Tsoras AM, Lindsley A, Rothenberg ME, Wills-Karp M, Eissa NT, Borish L, Khurana Hershey GK. Differences in candidate gene association between European ancestry and African American asthmatic children. PLoS One 2011; 6:e16522. [PMID: 21387019 PMCID: PMC3046166 DOI: 10.1371/journal.pone.0016522] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2010] [Accepted: 01/02/2011] [Indexed: 12/31/2022] Open
Abstract
Background Candidate gene case-control studies have identified several single nucleotide polymorphisms (SNPs) that are associated with asthma susceptibility. Most of these studies have been restricted to evaluations of specific SNPs within a single gene and within populations from European ancestry. Recently, there is increasing interest in understanding racial differences in genetic risk associated with childhood asthma. Our aim was to compare association patterns of asthma candidate genes between children of European and African ancestry. Methodology/Principal Findings Using a custom-designed Illumina SNP array, we genotyped 1,485 children within the Greater Cincinnati Pediatric Clinic Repository and Cincinnati Genomic Control Cohort for 259 SNPs in 28 genes and evaluated their associations with asthma. We identified 14 SNPs located in 6 genes that were significantly associated (p-values <0.05) with childhood asthma in African Americans. Among Caucasians, 13 SNPs in 5 genes were associated with childhood asthma. Two SNPs in IL4 were associated with asthma in both races (p-values <0.05). Gene-gene interaction studies identified race specific sets of genes that best discriminate between asthmatic children and non-allergic controls. Conclusions/Significance We identified IL4 as having a role in asthma susceptibility in both African American and Caucasian children. However, while IL4 SNPs were associated with asthma in asthmatic children with European and African ancestry, the relative contributions of the most replicated asthma-associated SNPs varied by ancestry. These data provides valuable insights into the pathways that may predispose to asthma in individuals with European vs. African ancestry.
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Affiliation(s)
- Tesfaye M. Baye
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Melinda Butsch Kovacic
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Jocelyn M. Biagini Myers
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Lisa J. Martin
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Mark Lindsey
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Tia L. Patterson
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Hua He
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Mark B. Ericksen
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Jayanta Gupta
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Anna M. Tsoras
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Andrew Lindsley
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Marc E. Rothenberg
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Marsha Wills-Karp
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - N. Tony Eissa
- Department of Medicine, Baylor College of Medicine, Houston, Texas, United States of America
| | - Larry Borish
- Department of Medicine, University of Virginia, Charlottesville, Virginia, United States of America
| | - Gurjit K. Khurana Hershey
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, United States of America
- * E-mail:
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Ricci G, Astolfi A, Remondini D, Cipriani F, Formica S, Dondi A, Pession A. Pooled genome-wide analysis to identify novel risk loci for pediatric allergic asthma. PLoS One 2011; 6:e16912. [PMID: 21359210 PMCID: PMC3040188 DOI: 10.1371/journal.pone.0016912] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2010] [Accepted: 01/03/2011] [Indexed: 11/22/2022] Open
Abstract
Background Genome-wide association studies of pooled DNA samples were shown to be a valuable tool to identify candidate SNPs associated to a phenotype. No such study was up to now applied to childhood allergic asthma, even if the very high complexity of asthma genetics is an appropriate field to explore the potential of pooled GWAS approach. Methodology/Principal Findings We performed a pooled GWAS and individual genotyping in 269 children with allergic respiratory diseases comparing allergic children with and without asthma. We used a modular approach to identify the most significant loci associated with asthma by combining silhouette statistics and physical distance method with cluster-adapted thresholding. We found 97% concordance between pooled GWAS and individual genotyping, with 36 out of 37 top-scoring SNPs significant at individual genotyping level. The most significant SNP is located inside the coding sequence of C5, an already identified asthma susceptibility gene, while the other loci regulate functions that are relevant to bronchial physiopathology, as immune- or inflammation-mediated mechanisms and airway smooth muscle contraction. Integration with gene expression data showed that almost half of the putative susceptibility genes are differentially expressed in experimental asthma mouse models. Conclusion/Significance Combined silhouette statistics and cluster-adapted physical distance threshold analysis of pooled GWAS data is an efficient method to identify candidate SNP associated to asthma development in an allergic pediatric population.
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Affiliation(s)
- Giampaolo Ricci
- Pediatric Unit, Department of Gynecologic, Obstetric and Pediatric Sciences, University of Bologna, Bologna, Italy.
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Nawijn MC, Piavaux BJA, Jeurink PV, Gras R, Reinders MA, Stearns T, Foote S, Hylkema MN, Groot PC, Korstanje R, Oosterhout AJMV. Identification of the Mhc region as an asthma susceptibility locus in recombinant congenic mice. Am J Respir Cell Mol Biol 2010; 45:295-303. [PMID: 20971879 DOI: 10.1165/rcmb.2009-0369oc] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Mouse models of allergic asthma are characterized by airway hyperreactivity (AHR), Th2-driven eosinophilic airway inflammation, high allergen-specific IgE (anti-OVA IgE) levels in serum, and airway remodeling. Because asthma susceptibility has a strong genetic component, we aimed to identify new asthma susceptibility genes in the mouse by analyzing the asthma phenotypes of the Leishmania major resistant (lmr) recombinant congenic (RC) strains. The lmr RC strains are derived from C57BL/6 and BALB/c intercrosses and carry congenic loci on chromosome 17 (lmr1) and 9 (lmr2) in both backgrounds. Whereas the lmr2 locus on chromosome 9 contributes to a small background-specific effect on anti-OVA IgE and AHR, the lmr1 locus on chromosome 17 mediates a strong effect on Th2-driven eosinophilic airway inflammation and background-specific effects on anti-OVA IgE and AHR. The lmr1 locus contains almost 600 polymorphic genes. To narrow down this number of candidate genes, we performed genome-wide transcriptional profiling on lung tissue from C.lmr1 RC mice and BALB/c control mice. We identified a small number of differentially expressed genes located within the congenic fragment, including a number of Mhc genes, polymorphic between BALB/c and C57Bl/6. The analysis of asthma phenotypes in the C.B10-H2b RC strain, carrying the C57Bl/6 haplotype of the Mhc locus in a BALB/c genetic background, reveals a strikingly similar asthma phenotype compared with C.lmr1, indicating that the differentially expressed genes located within the C.B10-H2b congenic fragment are the most likely candidate genes to contribute to the reduced asthma phenotypes associated with the C57Bl/6 allele of lmr1.
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Affiliation(s)
- Martijn C Nawijn
- Laboratory of Allergology & Pulmonary Diseases, Department of Pathology and Medical Biology, GRIAC Research Institute, University Medical Centre Groningen, University of Groningen, the Netherlands
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The leukocyte activation antigen CD69 limits allergic asthma and skin contact hypersensitivity. J Allergy Clin Immunol 2010; 126:355-65, 365.e1-3. [PMID: 20621339 DOI: 10.1016/j.jaci.2010.05.010] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2009] [Revised: 04/21/2010] [Accepted: 05/10/2010] [Indexed: 11/24/2022]
Abstract
BACKGROUND Allergic diseases have a major health care impact in industrialized countries. The development of these diseases is influenced by exposure to allergen and to immunological and genetic factors. However, the molecular mechanisms underlying the inflammatory response that triggers allergy are not well defined. OBJECTIVE We have investigated the role of the leukocyte activation antigen CD69 in the regulation of two allergic diseases, asthma and contact dermatitis. METHODS Analysis of two models of allergic diseases in CD69 knockout and wild-type mice: ovalbumin-induced allergic airway inflammation (BALB/c genetic background) and contact hypersensitivity to oxazolone (C57BL/6J genetic background). RESULTS CD69 deficiency dramatically enhanced the inflammatory response in the ovalbumin-induced asthma model of antigen-induced airway allergy. CD69 knockout mice showed exacerbated pulmonary eosinophil recruitment, high vascular cell adhesion molecule 1 expression levels in lung vasculature, and enhanced T(H)2 and T(H)17 cytokines in the bronchoalveolar space and lung tissue. In the hapten-induced cutaneous contact hypersensitivity model, both CD69 deficiency and treatment with anti-CD69 mAb increased inflammation. Treatment with contact allergens induced enhanced T(H)1 and T(H)17 responses in CD69 deficient mice, and neutralizing anti-IL-17 antibodies reduced skin inflammation. In both experimental systems, adoptive transfer of lymph node cells from CD69 knockout mice increased the inflammatory response in recipient mice. CONCLUSION These results demonstrate that the early activation receptor CD69 is an intrinsic modulator of immune allergic processes through the negative regulation of allergen-induced T-cell effector responses.
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