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Bloom CI, Adcock IM. CC16: A Treatable Trait in Asthma? Am J Respir Crit Care Med 2023; 208:745-746. [PMID: 37582203 PMCID: PMC10563192 DOI: 10.1164/rccm.202307-1255ed] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Accepted: 08/15/2023] [Indexed: 08/17/2023] Open
Affiliation(s)
- Chloe I Bloom
- National Heart and Lung Institute Imperial College London London, United Kingdom
| | - Ian M Adcock
- National Heart and Lung Institute Imperial College London London, United Kingdom
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2
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Association of serum CC16 levels with eosinophilic inflammation and respiratory dysfunction in severe asthma. Respir Med 2023; 206:107089. [PMID: 36542961 DOI: 10.1016/j.rmed.2022.107089] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 12/01/2022] [Accepted: 12/10/2022] [Indexed: 12/15/2022]
Abstract
BACKGROUND There are knowledge gaps in the potential role of Club cell 16-kDa secretory protein (CC16) in severe asthma phenotypes and type 2 inflammation, as well as the longitudinal effect of CC16 on pulmonary function tests and exacerbation risk in epidemiological studies. OBJECTIVE AND METHODS To assess whether serum CC16 is associated with eosinophilic inflammation in patients with severe asthma. We also examined the effect of this protein on the annual decline in forced expiratory volume in the first second (FEV1) and the risk of exacerbation using a longitudinal approach. We recruited 127 patients with severe asthma from 30 hospitals/pulmonary clinics in Hokkaido, Japan. The least square means and standard error were calculated for T-helper 2 (Th2) biomarkers and pulmonary function test across CC16 tertiles at baseline. We did the same for asthma exacerbation and annual decline in FEV1 with 3 and 5 years' follow-up, respectively. RESULTS We found that serum CC16 was inversely associated with sputum eosinophils and blood periostin in a dose-response manner. Baseline CC16 and FEV1/forced vital capacity ratio were positively associated in adjusted models (p for trend = 0.008). Patients with the lowest tertile of serum CC16 levels at baseline had a -14.3 mL decline in FEV1 than those with the highest tertile over 5 years of follow-up (p for trend = 0.031, fully adjusted model). We did not find any association of CC16 with exacerbation risk. CONCLUSION Patients with severe asthma with lower circulatory CC16 had enhanced eosinophilic inflammation with rapid FEV1 decline over time.
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Nauwelaerts SJD, Van Goethem N, De Cremer K, Sierra NB, Vercauteren J, Stroobants C, Bernard A, Nawrot T, Roosens NHC, De Keersmaecker SCJ. Noninvasive integrative approach applied to children in the context of recent air pollution exposure demonstrates association between fractional exhaled nitric oxide (FeNO) and urinary CC16. ENVIRONMENTAL RESEARCH 2023; 216:114441. [PMID: 36191620 DOI: 10.1016/j.envres.2022.114441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 09/19/2022] [Accepted: 09/23/2022] [Indexed: 06/16/2023]
Abstract
Exposure to the air pollutant particulate matter (PM) is associated with increased risks of respiratory diseases and enhancement of airway inflammation in children. In the context of large scale air pollution studies, it can be challenging to measure fractional exhaled nitric oxide (FeNO) as indicator of lung inflammation. Urinary CC16 (U-CC16) is a potential biomarker of increased lung permeability and toxicity, increasing following short-term PM2.5 exposure. The single nucleotide polymorphism (SNP) CC16 G38A (rs3741240) affects CC16 levels and respiratory health. Our study aimed at assessing the use of U-CC16 (incl. CC16 G38A from saliva) as potential alternative for FeNO by investigating their mutual correlation in children exposed to PM. Samples from a small-scale study conducted in 42 children from urban (n = 19) and rural (n = 23) schools examined at two time points, were analysed. When considering recent (lag1) low level exposure to PM2.5 as air pollution measurement, we found that U-CC16 was positively associated with FeNO (β = 0.23; 95% CI [-0.01; 0.47]; p = 0.06) in an adjusted analysis using a linear mixed effects model. Further, we observed a positive association between PM2.5 and FeNO (β = 0.56; 95% CI [0.02; 1.09]; p = 0.04) and higher FeNO in urban school children as compared to rural school children (β = 0.72; 95% CI [0.12; 1.31]; p = 0.02). Although more investigations are needed, our results suggest that inflammatory responses evidenced by increased FeNO are accompanied by potential increased lung epithelium permeability and injury, evidenced by increased U-CC16. In future large scale studies, where FeNO measurement is less feasible, the integrated analysis of U-CC16 and CC16 G38A, using noninvasive samples, might be a suitable alternative to assess the impact of air pollution exposure on the respiratory health of children, which is critical for policy development at population level.
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Affiliation(s)
- Sarah J D Nauwelaerts
- Transversal Activities in Applied Genomics, Sciensano, Brussels, Belgium; Centre for Toxicology and Applied Pharmacology, University Catholique de Louvain, Brussels, Belgium
| | - Nina Van Goethem
- Department of Epidemiology and Public Health, Sciensano, Brussels, Belgium
| | - Koen De Cremer
- Platform Chromatography and Mass Spectrometry, Sciensano, Brussels, Belgium
| | | | | | - Christophe Stroobants
- Centre for Environmental Sciences, Hasselt University, Agoralaan Building D, 3590, Diepenbeek, Belgium
| | - Alfred Bernard
- Centre for Toxicology and Applied Pharmacology, University Catholique de Louvain, Brussels, Belgium
| | - Tim Nawrot
- Centre for Environmental Sciences, Hasselt University, Agoralaan Building D, 3590, Diepenbeek, Belgium; Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium
| | - Nancy H C Roosens
- Transversal Activities in Applied Genomics, Sciensano, Brussels, Belgium
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Gribben KC, Wyss AB, Poole JA, Farazi PA, Wichman C, Richards-Barber M, Beane Freeman LE, Henneberger PK, Umbach DM, London SJ, LeVan TD, Gribben KC. CC16 polymorphisms in asthma, asthma subtypes, and asthma control in adults from the Agricultural Lung Health Study. Respir Res 2022; 23:305. [PMID: 36352422 PMCID: PMC9644514 DOI: 10.1186/s12931-022-02211-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Accepted: 10/04/2022] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND The club cell secretory protein (CC16) has anti-inflammatory and antioxidant effects and is a potential early biomarker of lung damage. The CC16 single nucleotide polymorphism (SNP) rs3741240 risk allele (A) has been inconsistently linked to asthma; other tagging SNPs in the gene have not been explored. The aim was to determine whether CC16 tagging polymorphisms are associated with adult asthma, asthma subtypes or asthma control in the Agricultural Lung Health Study (ALHS). METHODS The ALHS is an asthma case-control study nested in the Agricultural Health Study cohort. Asthma cases were individuals with current doctor diagnosed asthma, likely undiagnosed asthma, or asthma-COPD overlap defined by questionnaire. We also examined asthma subtypes and asthma control. Five CC16 tagging SNPs were imputed to 1000 Genomes Integrated phase 1 reference panel. Logistic regression was used to estimate associations between CC16 SNPs and asthma outcomes adjusted for covariates. RESULTS The sample included 1120 asthma cases and 1926 controls of European ancestry, with a mean age of 63 years. The frequency of the risk genotype (AA) for rs3741240 was 12.5% (n = 382). CC16 rs3741240 was not associated with adult asthma outcomes. A tagging SNP in the CC16 gene, rs12270961 was associated with uncontrolled asthma (n = 208, ORadj= 1.4, 95% CI 1.0, 1.9; p = 0.03). CONCLUSION This study, the largest study to investigate associations between CC16 tagging SNPs and asthma phenotypes in adults, did not confirm an association of rs3741240 with adult asthma. A tagging SNP in CC16 suggests a potential relationship with asthma control.
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Affiliation(s)
- KC Gribben
- Department of Epidemiology, University of Nebraska Medical Center, 68198 Omaha, NE USA
| | - AB Wyss
- Epidemiology Branch, National Institute of Environmental Health Sciences, Department of Health and Human Services, National Institutes of Health, Research Triangle Park, NC USA
| | - JA Poole
- Department of Internal Medicine, Division of Allergy and Immunology, University of Nebraska Medical Center, 68198 Omaha, NE USA
| | - PA Farazi
- Department of Epidemiology, University of Nebraska Medical Center, 68198 Omaha, NE USA
| | - C Wichman
- Department of Biostatistics, University of Nebraska Medical Center, 68198 Omaha, NE USA
| | | | - LE Beane Freeman
- Occupational and Environmental Epidemiology Branch, National Cancer Institute, Bethesda, MD USA
| | - PK Henneberger
- Respiratory Health Division, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Morgantown, WV USA
| | - DM Umbach
- Biostatistics and Computational Biology Branch, National Institute of Environmental Health Sciences, Department of Health and Human Services, National Institutes of Health, Research Triangle Park, NC USA
| | - SJ London
- Epidemiology Branch, National Institute of Environmental Health Sciences, Department of Health and Human Services, National Institutes of Health, Research Triangle Park, NC USA
| | - TD LeVan
- Department of Epidemiology, University of Nebraska Medical Center, 68198 Omaha, NE USA
- Department of Internal Medicine, Division of Pulmonary, Critical Care and Sleep, University of Nebraska Medical Center, 68198 Omaha, NE USA
| | - Kelli C. Gribben
- Department of Epidemiology, University of Nebraska Medical Center, 68198 Omaha, NE USA
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Nauwelaerts SJD, Van Goethem N, Ureña BT, De Cremer K, Bernard A, Saenen ND, Nawrot TS, Roosens NHC, De Keersmaecker SCJ. Urinary CC16, a potential indicator of lung integrity and inflammation, increases in children after short-term exposure to PM 2.5/PM 10 and is driven by the CC16 38GG genotype. ENVIRONMENTAL RESEARCH 2022; 212:113272. [PMID: 35439460 DOI: 10.1016/j.envres.2022.113272] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 04/04/2022] [Accepted: 04/06/2022] [Indexed: 06/14/2023]
Abstract
Particular matter (PM) exposure is a big hazard for public health, especially for children. Serum CC16 is a well-known biomarker of respiratory health. Urinary CC16 (U-CC16) can be a noninvasive alternative, albeit requiring adequate adjustment for renal handling. Moreover, the SNP CC16 G38A influences CC16 levels. This study aimed to monitor the effect of short-term PM exposure on CC16 levels, measured noninvasively in schoolchildren, using an integrative approach. We used a selection of urine and buccal DNA samples from 86 children stored in an existing biobank. Using a multiple reaction monitoring method, we measured U-CC16, as well as RBP4 (retinol binding protein 4) and β2M (beta-2-microglobulin), required for adjustment. Buccal DNA samples were used for CC16 G38A genotyping. Linear mixed-effects models were used to find relevant associations between U-CC16 and previously obtained data from recent daily PM ≤ 2.5 or 10 μm exposure (PM2.5, PM10) modeled at the child's residence. Our study showed that exposure to low PM at the child's residence (median levels 18.9 μg/m³ (PM2.5) and 23.6 μg/m³ (PM10)) one day before sampling had an effect on the covariates-adjusted U-CC16 levels. This effect was dependent on the CC16 G38A genotype, due to its strong interaction with the association between PM levels and covariates-adjusted U-CC16 (P = 0.024 (PM2.5); P = 0.061 (PM10)). Only children carrying the 38GG genotype showed an increase of covariates-adjusted U-CC16, measured 24h after exposure, with increasing PM2.5 and PM10 (β = 0.332; 95% CI: 0.110 to 0.554 and β = 0.372; 95% CI: 0.101 to 0.643, respectively). To the best of our knowledge, this is the first study using an integrative approach to investigate short-term PM exposure of children, using urine to detect early signs of pulmonary damage, and taking into account important determinants such as the genetic background and adequate adjustment of the measured biomarker in urine.
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Affiliation(s)
- Sarah J D Nauwelaerts
- Transversal Activities in Applied Genomics, Sciensano, Brussels, Belgium; Centre for Toxicology and Applied Pharmacology, University Catholique de Louvain, Woluwe, Brussels, Belgium
| | - Nina Van Goethem
- Department of Epidemiology and Public Health, Sciensano, Brussels, Belgium; Department of Epidemiology and Biostatistics, Institut de Recherche Expérimentale et Clinique, Faculty of Public Health, Université catholique de Louvain, Belgium
| | - Berta Tenas Ureña
- Transversal Activities in Applied Genomics, Sciensano, Brussels, Belgium
| | - Koen De Cremer
- Platform Chromatography and Mass Spectrometry, Sciensano, Brussels, Belgium
| | - Alfred Bernard
- Centre for Toxicology and Applied Pharmacology, University Catholique de Louvain, Woluwe, Brussels, Belgium
| | - Nelly D Saenen
- Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Tim S Nawrot
- Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium; Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium
| | - Nancy H C Roosens
- Transversal Activities in Applied Genomics, Sciensano, Brussels, Belgium
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Nauwelaerts SJD, De Cremer K, Bustos Sierra N, Gand M, Van Geel D, Delvoye M, Vandermassen E, Vercauteren J, Stroobants C, Bernard A, Saenen ND, Nawrot TS, Roosens NHC, De Keersmaecker SCJ. Assessment of the Feasibility of a Future Integrated Larger-Scale Epidemiological Study to Evaluate Health Risks of Air Pollution Episodes in Children. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19148531. [PMID: 35886381 PMCID: PMC9323067 DOI: 10.3390/ijerph19148531] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/08/2022] [Accepted: 07/10/2022] [Indexed: 02/07/2023]
Abstract
Air pollution exposure can lead to exacerbation of respiratory disorders in children. Using sensitive biomarkers helps to assess the impact of air pollution on children’s respiratory health and combining protein, genetic and epigenetic biomarkers gives insights on their interrelatedness. Most studies do not contain such an integrated approach and investigate these biomarkers individually in blood, although its collection in children is challenging. Our study aimed at assessing the feasibility of conducting future integrated larger-scale studies evaluating respiratory health risks of air pollution episodes in children, based on a qualitative analysis of the technical and logistic aspects of a small-scale field study involving 42 children. This included the preparation, collection and storage of non-invasive samples (urine, saliva), the measurement of general and respiratory health parameters and the measurement of specific biomarkers (genetic, protein, epigenetic) of respiratory health and air pollution exposure. Bottlenecks were identified and modifications were proposed to expand this integrated study to a higher number of children, time points and locations. This would allow for non-invasive assessment of the impact of air pollution exposure on the respiratory health of children in future larger-scale studies, which is critical for the development of policies or measures at the population level.
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Affiliation(s)
- Sarah J. D. Nauwelaerts
- Transversal Activities in Applied Genomics, Sciensano, 1050 Brussels, Belgium; (S.J.D.N.); (M.G.); (D.V.G.); (M.D.); (E.V.); (N.H.C.R.)
- Centre for Toxicology and Applied Pharmacology, University Catholique de Louvain, 1200 Brussels, Belgium;
| | - Koen De Cremer
- Platform Chromatography and Mass Spectrometry, Sciensano, 1050 Brussels, Belgium;
| | | | - Mathieu Gand
- Transversal Activities in Applied Genomics, Sciensano, 1050 Brussels, Belgium; (S.J.D.N.); (M.G.); (D.V.G.); (M.D.); (E.V.); (N.H.C.R.)
| | - Dirk Van Geel
- Transversal Activities in Applied Genomics, Sciensano, 1050 Brussels, Belgium; (S.J.D.N.); (M.G.); (D.V.G.); (M.D.); (E.V.); (N.H.C.R.)
| | - Maud Delvoye
- Transversal Activities in Applied Genomics, Sciensano, 1050 Brussels, Belgium; (S.J.D.N.); (M.G.); (D.V.G.); (M.D.); (E.V.); (N.H.C.R.)
| | - Els Vandermassen
- Transversal Activities in Applied Genomics, Sciensano, 1050 Brussels, Belgium; (S.J.D.N.); (M.G.); (D.V.G.); (M.D.); (E.V.); (N.H.C.R.)
| | - Jordy Vercauteren
- Unit Air, Vlaamse Milieumaatschappij, 2000 Antwerpen, Belgium; (J.V.); (C.S.)
| | | | - Alfred Bernard
- Centre for Toxicology and Applied Pharmacology, University Catholique de Louvain, 1200 Brussels, Belgium;
| | - Nelly D. Saenen
- Centre for Environmental Sciences, Hasselt University, 3590 Diepenbeek, Belgium; (N.D.S.); (T.S.N.)
| | - Tim S. Nawrot
- Centre for Environmental Sciences, Hasselt University, 3590 Diepenbeek, Belgium; (N.D.S.); (T.S.N.)
- Department of Public Health and Primary Care, KU Leuven, 3000 Leuven, Belgium
| | - Nancy H. C. Roosens
- Transversal Activities in Applied Genomics, Sciensano, 1050 Brussels, Belgium; (S.J.D.N.); (M.G.); (D.V.G.); (M.D.); (E.V.); (N.H.C.R.)
| | - Sigrid C. J. De Keersmaecker
- Transversal Activities in Applied Genomics, Sciensano, 1050 Brussels, Belgium; (S.J.D.N.); (M.G.); (D.V.G.); (M.D.); (E.V.); (N.H.C.R.)
- Correspondence:
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Effects of obesity on CC16 and their potential role in overweight/obese asthma. Respir Res 2022; 23:174. [PMID: 35768822 PMCID: PMC9241210 DOI: 10.1186/s12931-022-02038-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 04/24/2022] [Indexed: 11/21/2022] Open
Abstract
Introduction Club cell secretory protein-16 (CC16) is a major anti-inflammatory protein expressed in the airway; however, the potential role of CC16 on overweight/obese asthma has not been assessed. In this study, we examined whether obesity reduces airway/circulatory CC16 levels using experimental and epidemiological studies. Then, we explored the mediatory role of CC16 in the relationship of overweight/obesity with clinical asthma measures. Methods Circulating CC16 levels were assessed by ELISA in three independent human populations, including two groups of healthy and general populations and asthma patients. The percentage of cells expressing club markers in obese vs. non-obese mice and human airways was determined by immunohistochemistry. A causal mediation analysis was conducted to determine whether circulatory CC16 acted as a mediator between overweight/obesity and clinical asthma measures. Results BMI was significantly and monotonously associated with reduced circulating CC16 levels in all populations. The percentage of CC16-expressing cells was reduced in the small airways of both mice and humans with obesity. Finally, mediation analysis revealed significant contributions of circulatory CC16 in the association between BMI and clinical asthma measures; 21.8% of its total effect in BMI’s association with airway hyperresponsiveness of healthy subjects (p = 0.09), 26.4% with asthma severity (p = 0.030), and 23% with the required dose of inhaled corticosteroid (p = 0.042). In logistic regression analysis, 1-SD decrease in serum CC16 levels of asthma patients was associated with 87% increased odds for high dose ICS requirement (p < 0.001). Conclusions We demonstrate that airway/circulating CC16, which is inversely associated with BMI, may mediate development and severity in overweight/obese asthma. Supplementary Information The online version contains supplementary material available at 10.1186/s12931-022-02038-1.
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Zhou Q, Chen J, Wu D, Yan H, Liu F, Xi Y, Wang F, Wu J, Qiu H, Bu S. Differential expression of long non-coding RNAs SRA, HCG22 and MHRT in children with Kawasaki disease. Exp Ther Med 2021; 22:1022. [PMID: 34373708 DOI: 10.3892/etm.2021.10454] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 04/26/2021] [Indexed: 12/12/2022] Open
Abstract
Kawasaki disease (KD) is an acute, self-limited inflammatory illness during childhood that may lead to thrombosis in the coronary arteries (CA). The major aims of the present study were to estimate the serum levels of long non-coding RNAs (lncRNAs) and the metabolic profiles of patients with KD. A total of 40 specimens were obtained from pediatric patients (40 specimens before and 40 specimens after treatment) who were diagnosed with KD (n=40). The controls comprised healthy children without KD (n=40). The serum levels of lncRNAs steroid receptor RNA activator (SRA), human leukocyte antigen complex group 22 (HCG22) and myosin heavy chain-associated RNA transcript (MHRT) were determined using reverse transcription-quantitative PCR. Subsequently, the correlation between the expression levels of lncRNAs and biochemical parameters of patients was assessed. Receiver operating characteristic curves were constructed to determine the diagnostic value of the lncRNAs. The results indicated that the serum levels of lncRNAs SRA and HCG22 were higher in patients with acute KD compared with those in healthy controls. B-type natriuretic peptide (BNP) and C-reactive protein were positively correlated with HCG22 in patients with acute KD, while total cholesterol and low-density lipoprotein were negatively correlated with HCG22 in patients with acute KD. The lncRNA MHRT was significantly upregulated in convalescent KD compared with acute KD following intravenous immunoglobulin therapy. In patients with convalescent KD, creatine kinase was positively correlated with MHRT, while BNP and adenosine deaminase were negatively correlated with MHRT. In conclusion, to the best of our knowledge, the present study was the first to identify that the serum levels of lncRNAs SRA and HCG22 in patients with acute KD were higher compared with those in control subjects. MHRT levels in patients with convalescent KD were higher than those in the acute phase. LncRNAs SRA and HCG22 may have crucial roles in KD and are potential novel diagnostic biomarkers for KD. LncRNA MHRT may be considered a novel biomarker for predicting the clinical prognosis of patients with KD.
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Affiliation(s)
- Qianqin Zhou
- Diabetes Research Center, School of Medicine, Ningbo University, Ningbo, Zhejiang 315211, P.R. China
| | - Jiayi Chen
- Diabetes Research Center, School of Medicine, Ningbo University, Ningbo, Zhejiang 315211, P.R. China
| | - Danyang Wu
- Diabetes Research Center, School of Medicine, Ningbo University, Ningbo, Zhejiang 315211, P.R. China
| | - Haiyian Yan
- Diabetes Research Center, School of Medicine, Ningbo University, Ningbo, Zhejiang 315211, P.R. China
| | - Fang Liu
- Diabetes Research Center, School of Medicine, Ningbo University, Ningbo, Zhejiang 315211, P.R. China
| | - Yang Xi
- Diabetes Research Center, School of Medicine, Ningbo University, Ningbo, Zhejiang 315211, P.R. China
| | - Fuyan Wang
- Diabetes Research Center, School of Medicine, Ningbo University, Ningbo, Zhejiang 315211, P.R. China
| | - Junhua Wu
- Department of Pediatric Cardiology, Ningbo Women and Children's Hospital, Ningbo, Zhejiang 315012, P.R. China
| | - Haiyan Qiu
- Department of Pediatric Cardiology, Ningbo Women and Children's Hospital, Ningbo, Zhejiang 315012, P.R. China
| | - Shizhong Bu
- Diabetes Research Center, School of Medicine, Ningbo University, Ningbo, Zhejiang 315211, P.R. China
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ORMDL3/GSDMB genotype as a risk factor for early-onset adult asthma is linked to total serum IgE levels but not to allergic sensitization. Allergol Int 2021; 70:55-60. [PMID: 32444308 DOI: 10.1016/j.alit.2020.04.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 04/03/2020] [Accepted: 04/19/2020] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND An orosomucoid-like 3 (ORMDL3)/gasdermin B (GSDMB) gene locus on chromosome 17q is consistently associated with childhood-onset asthma, which is highly atopic. As some evidence suggests the relationship between asthma and allergic sensitization reflects asthma patient susceptibility to augmented IgE responses driven by common environmental allergens rather than an increased asthma risk after allergen exposure, we aimed to determine any relationships between this locus region and childhood-onset adult asthma with regard to serum total IgE levels or allergic sensitization. METHODS We conducted a case-control association study using three independent Japanese populations (3869 total adults) and analyzed the ORs for association of rs7216389, an expression quantitative trait locus for ORMDL3/GSDMB, with adult asthma according to onset age. Additionally, associations between the rs7216389 genotype and total serum IgE levels or allergic sensitization was examined. RESULTS Rs7216389 was associated with both childhood-onset adult asthma (OR for asthmatic patients afflicted at the age of 10 years or younger = 1.61, p = 0.00021) and asthmatic patients with higher levels of total serum IgE (OR for asthmatic patients with IgE ≥1000IU/mL = 1.55, p = 0.0033). In both healthy controls and in the combined healthy and asthmatic individuals, rs7216389 was correlated with increased total serum IgE levels (p < 0.0005), but not allergic sensitization (p > 0.1). CONCLUSIONS ORMDL3/GSDMB is an important susceptibility gene for childhood-onset adult asthma in Japanese populations and this association is linked to elevated total serum IgE levels but not to allergic sensitization.
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Milne S, Li X, Hernandez Cordero AI, Yang CX, Cho MH, Beaty TH, Ruczinski I, Hansel NN, Bossé Y, Brandsma CA, Sin DD, Obeidat M. Protective effect of club cell secretory protein (CC-16) on COPD risk and progression: a Mendelian randomisation study. Thorax 2020; 75:934-943. [PMID: 32839289 DOI: 10.1136/thoraxjnl-2019-214487] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 06/25/2020] [Accepted: 07/10/2020] [Indexed: 01/10/2023]
Abstract
BACKGROUND The anti-inflammatory pneumoprotein club cell secretory protein-16 (CC-16) is associated with the clinical expression of chronic obstructive pulmonary disease (COPD). We aimed to determine if there is a causal effect of serum CC-16 level on the risk of having COPD and/or its progression using Mendelian randomisation (MR) analysis. METHODS We performed a genome-wide association meta-analysis for serum CC-16 in two COPD cohorts (Lung Health Study (LHS), n=3850 and ECLIPSE, n=1702). We then used the CC-16-associated single-nucleotide polymorphisms (SNPs) as instrumental variables in MR analysis to identify a causal effect of serum CC-16 on 'COPD risk' (ie, case status in the International COPD Genetics Consortium/UK-Biobank dataset; n=35 735 COPD cases, n=222 076 controls) and 'COPD progression' (ie, annual change in forced expiratory volume in 1 s in LHS and ECLIPSE). We also determined the associations between SNPs associated with CC-16 and gene expression using n=1111 lung tissue samples from the Lung Expression Quantitative Trait Locus Study. RESULTS We identified seven SNPs independently associated (p<5×10-8) with serum CC-16 levels; six of these were novel. MR analysis suggested a protective causal effect of increased serum CC-16 on COPD risk (MR estimate (SE) -0.11 (0.04), p=0.008) and progression (LHS only, MR estimate (SE) 7.40 (3.28), p=0.02). Five of the SNPs were also associated with gene expression in lung tissue (at false discovery rate <0.1) of several genes, including the CC-16-encoding gene SCGB1A1. CONCLUSION We have identified several novel genetic variants associated with serum CC-16 level in COPD cohorts. These genetic associations suggest a potential causal effect of serum CC-16 on the risk of having COPD and its progression, the biological basis of which warrants further investigation.
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Affiliation(s)
- Stephen Milne
- Centre for Heart Lung Innovation, St Paul's Hospital, The University of British Columbia, Vancouver, British Columbia, Canada .,Division of Respiratory Medicine, The University of British Columbia, Vancouver, British Columbia, Canada.,Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
| | - Xuan Li
- Centre for Heart Lung Innovation, St Paul's Hospital, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Ana I Hernandez Cordero
- Centre for Heart Lung Innovation, St Paul's Hospital, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Chen Xi Yang
- Centre for Heart Lung Innovation, St Paul's Hospital, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Michael H Cho
- Channing Division of Network Medicine and Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Terri H Beaty
- Department of Epidemiology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland, USA
| | - Ingo Ruczinski
- Department of Biostatistics, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland, USA
| | - Nadia N Hansel
- Pulmonary and Critical Care Medicine, School of Medicine, Johns Hopkins University, Baltimore, Maryland, USA
| | - Yohan Bossé
- Institut universitaire de cardiologie et de pneumologie de Québec, Department of Molecular Medicine, Laval University, Québec City, Québec, Canada
| | - Corry-Anke Brandsma
- University of Groningen Department of Pathology and Medical Biology, University Medical Centre Groningen, Groningen, The Netherlands
| | - Don D Sin
- Centre for Heart Lung Innovation, St Paul's Hospital, The University of British Columbia, Vancouver, British Columbia, Canada.,Division of Respiratory Medicine, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Maen Obeidat
- Centre for Heart Lung Innovation, St Paul's Hospital, The University of British Columbia, Vancouver, British Columbia, Canada
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11
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Nauwelaerts SJD, Roosens NHC, De Cremer K, Bernard A, De Keersmaecker SCJ. Gender-dependent association between exhaled nitric oxide and the CC16 38AA genotype in young school children. IMMUNITY INFLAMMATION AND DISEASE 2020; 8:497-505. [PMID: 32762031 PMCID: PMC7654394 DOI: 10.1002/iid3.332] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 07/06/2020] [Accepted: 07/14/2020] [Indexed: 12/12/2022]
Abstract
Background Studies that investigated the association between the CC16 A38G polymorphism and the risk of asthma yielded conflicting results. The aim of this study among schoolchildren was to assess the relationships of CC16 A38G polymorphism with aeroallergen sensitization and fractional exhaled nitric oxide (FeNO), two outcomes predicting asthma later in life. Methods The study included 139 children (72 boys), median age of 7.7. Information on each child's health, lifestyle, and environment was collected through a questionnaire completed by their parents. CC16 genotypes were determined using urinary DNA. We measured FeNO, the CC16 protein in urine and nasal lavage fluid and aeroallergen‐specific immunoglobulin E in nasal mucosa fluid. Results Children with the homozygous mutant CC16 38AA genotype had higher odds of increased FeNO (>30 ppb) compared with their peers with the wild‐type genotype 38GG (OR, 9.85; 95% CI, 2.09‐46.4; P = .004). This association was female gender specific (P = .002) not being observed in boys (P = .40). It was also independent of allergic sensitization, which yet emerged as the strongest predictor of FeNO along with the use of bleach for house cleaning. Children with the CC16 38AA genotype had lower covariates‐adjusted urinary CC16 levels than those with 38GG (median, μg/L, 1.17 vs 2.08, P = .02). Conclusion Our study suggests that the CC16 38AA allele promotes airway inflammation as measured by FeNO through a gender‐dependent association. Deficient levels of CC16 in the deep lung, measured noninvasively in urine, as a possible proxy for serum CC16, might underlie this promoting effect.
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Affiliation(s)
- Sarah J D Nauwelaerts
- Transversal activities in Applied Genomics, Sciensano, Brussels, Belgium.,Louvain Centre for Toxicology and Applied Pharmacology, University catholique de Louvain, Brussels, Belgium
| | - Nancy H C Roosens
- Transversal activities in Applied Genomics, Sciensano, Brussels, Belgium
| | - Koen De Cremer
- Platform Chromatography and Mass Spectrometry, Sciensano, Brussels, Belgium
| | - Alfred Bernard
- Louvain Centre for Toxicology and Applied Pharmacology, University catholique de Louvain, Brussels, Belgium
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12
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Li XX, Peng T, Gao J, Feng JG, Wu DD, Yang T, Zhong L, Fu WP, Sun C. Allele-specific expression identified rs2509956 as a novel long-distance cis-regulatory SNP for SCGB1A1, an important gene for multiple pulmonary diseases. Am J Physiol Lung Cell Mol Physiol 2019; 317:L456-L463. [PMID: 31322430 DOI: 10.1152/ajplung.00275.2018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
SCGB1A1 (secretoglobin family 1A member 1) is an important protein for multiple pulmonary diseases, especially asthma, chronic obstructive pulmonary disease, and lung cancer. One single-nucleotide polymorphism (SNP) at 5'-untranslated region of SCGB1A1, rs3741240, has been suggested to be associated with reduced protein expression and further asthma susceptibility. However, it was still unclear whether there were other cis-regulatory elements for SCGB1A1 that might further contribute to pulmonary diseases. Allele-specific expression (ASE) is a novel approach to identify the functional region in human genome. In the present study, we measured ASE on rs3741240 in lung tissues and observed a consistent excess of G allele over A (P < 10-6), which indicated that this SNP or the one(s) in linkage disequilibrium (LD) could regulate SCGB1A1 expression. By analyzing 1000 Genomes Project data for Chinese, one SNP locating ~10.2 kb away and downstream of SCGB1A1, rs2509956, was identified to be in strong LD with rs3741240. Reporter gene assay confirmed that both SNPs could regulate gene expression in the lung cell. By chromosome conformation capture, it was verified that the region surrounding rs2509956 could interact with SCGB1A1 promoter region and act as an enhancer. Through chromatin immunoprecipitation and overexpression assay, the related transcription factor RELA (RELA proto-oncogene, NF-kB subunit) was recognized to bind the region spanning rs2509956. Our work identified a novel long-distance cis-regulatory SNP for SCGB1A1, which might contribute to multiple pulmonary diseases.
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Affiliation(s)
- Xiu-Xiong Li
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, College of Life Sciences, Shaanxi Normal University, Xi'an, People's Republic of China
| | - Tao Peng
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, College of Life Sciences, Shaanxi Normal University, Xi'an, People's Republic of China
| | - Jing Gao
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, College of Life Sciences, Shaanxi Normal University, Xi'an, People's Republic of China
| | - Jia-Gang Feng
- Department of Respiratory Critical Care Medicine, The First Affiliated Hospital of Kunming Medical University, Kunming, People's Republic of China
| | - Dan-Dan Wu
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan University, Kunming, People's Republic of China
| | - Ting Yang
- Department of Respiratory Critical Care Medicine, The First Affiliated Hospital of Kunming Medical University, Kunming, People's Republic of China
| | - Li Zhong
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, College of Life Sciences, Shaanxi Normal University, Xi'an, People's Republic of China.,Provincial Demonstration Center for Experimental Biology Education, Shaanxi Normal University, Xi'an, People's Republic of China
| | - Wei-Ping Fu
- Department of Respiratory Critical Care Medicine, The First Affiliated Hospital of Kunming Medical University, Kunming, People's Republic of China
| | - Chang Sun
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, College of Life Sciences, Shaanxi Normal University, Xi'an, People's Republic of China
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13
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Zhu L, An L, Ran D, Lizarraga R, Bondy C, Zhou X, Harper RW, Liao SY, Chen Y. The Club Cell Marker SCGB1A1 Downstream of FOXA2 is Reduced in Asthma. Am J Respir Cell Mol Biol 2019; 60:695-704. [PMID: 30576223 PMCID: PMC6543749 DOI: 10.1165/rcmb.2018-0199oc] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 12/21/2018] [Indexed: 01/08/2023] Open
Abstract
Human SCGB1A1 protein has been shown to be significantly reduced in BAL, sputum, and serum from humans with asthma as compared with healthy individuals. However, the mechanism of this reduction and its functional impact have not been entirely elucidated. By mining online datasets, we found that the mRNA of SCGB1A1 was significantly repressed in brushed human airway epithelial cells from individuals with asthma, and this repression appeared to be associated with reduced expression of FOXA2. Consistently, both Scgb1A1 and FoxA2 were downregulated in an ovalbumin-induced mouse model of asthma. Furthermore, compared with wild-type mice, Scgb1a1 knockout mice had increased airway hyperreactivity and inflammation when they were exposed to ovalbumin, confirming the antiinflammatory role of Scgb1a1 in protection against asthma phenotypes. To search for potential asthma-related stimuli of SCGB1A1 repression, we tested T-helper cell type 2 cytokines. Both IL-4 and IL-13 repressed epithelial expression of SCGB1A1 and FOXA2. Importantly, infection of epithelial cells with human rhinovirus similarly reduced expression of these two genes, which suggests that FOXA2 may be the common regulator of SCGB1A1. To establish the causal role of reduced FOXA2 in SCGB1A1 repression, we demonstrated that FOXA2 was required for SCGB1A1 expression at baseline. FOXA2 overexpression was sufficient to drive promoter activity and expression of SCGB1A1 and was also able to restore the repressed SCGB1A1 expression in IL-13-treated or rhinovirus-infected cells. Taken together, these findings suggest that low levels of epithelial SCGB1A1 in asthma are caused by reduced FOXA2 expression.
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Affiliation(s)
- Lingxiang Zhu
- Department of Pharmacology and Toxicology, School of Pharmacy
| | - Lingling An
- Department of Epidemiology Biostatistics
- Interdisciplinary Program in Statistics
- Department of Biosystems Engineering, and
| | - Di Ran
- Department of Epidemiology Biostatistics
| | - Rosa Lizarraga
- Department of Pharmacology and Toxicology, School of Pharmacy
| | - Cheryl Bondy
- Department of Pharmacology and Toxicology, School of Pharmacy
| | - Xu Zhou
- Department of Pharmacology and Toxicology, School of Pharmacy
| | - Richart W. Harper
- Department of Internal Medicine, University of California, Davis, California
| | - Shu-Yi Liao
- Department of Internal Medicine, University of California, Davis, California
| | - Yin Chen
- Department of Pharmacology and Toxicology, School of Pharmacy
- Asthma and Airway Disease Research Center, University of Arizona, Tucson, Arizona; and
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14
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Serum periostin is associated with body mass index and allergic rhinitis in healthy and asthmatic subjects. Allergol Int 2018; 67:357-363. [PMID: 29223720 DOI: 10.1016/j.alit.2017.11.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2017] [Revised: 10/14/2017] [Accepted: 10/27/2017] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Many studies have attempted to clarify the factors associated with serum periostin levels in asthmatic patients. However, these results were based on studies of subjects mainly characterized by high eosinophil counts, which may present as an obstacle for clarification in the identification of other factors associated with serum periostin levels. The aim of this study was to determine the factors associated with serum periostin levels in healthy subjects. We also assessed some factors in asthmatic subjects to confirm their extrapolation for management of asthma. METHODS Serum periostin levels were measured in 230 healthy subjects. Clinical factors of interest included body mass index (BMI) and allergic rhinitis (AR). Additionally, we confirmed whether these factors were associated with serum periostin in 206 asthmatic subjects. We further evaluated several obesity-related parameters, such as abdominal fat distribution and adipocytokine levels. RESULTS Smoking status, blood eosinophil count, total immunoglobulin E, and the presence of AR were associated with serum periostin in healthy subjects. There was a negative association between BMI and serum periostin in both healthy and asthmatic subjects, while there was a tendency of a positive association with AR in asthmatic subjects. There were no differential associations observed for subcutaneous and abdominal fat in relation to serum periostin in asthmatic subjects. Serum periostin was significantly associated with serum levels of adiponectin, but not with leptin. CONCLUSIONS Our results provided clarity as to the factors associated with serum periostin levels, which could be helpful in the interpretation of serum periostin levels in clinical practice.
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15
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Abstract
Asthma is increasingly recognised as a heterogeneous group of diseases with similar clinical presentations rather than a singular disease entity. Asthma was historically categorised by clinical symptoms; however, newer methods of subgrouping, describing and categorising the disease have sub-defined asthma. These sub-definitions are intermittently called phenotypes or endotypes, but the real meanings of these words are poorly understood. Novel treatments are currently and increasingly available, partly in the monoclonal antibody environment, and also some physical therapies (bronchial thermoplasty), but additionally small molecules are not far away from clinical practice. Understanding the disease pathogenesis and the mechanism of action more completely may enable identification of treatable traits, biomarkers, mediators and modifiable therapeutic targets. However, there remains a danger that clinicians become preoccupied with the concept of endotypes and biomarkers, ignoring therapies that are hugely effective but have no companion biomarker. This review discusses our understanding of the concept of phenotypes and endotypes in appreciating and managing the heterogeneous condition that is asthma. We consider the role of functional imaging, physiology, blood-, sputum- and breath-based biomarkers and clinical manifestations that could be used to produce a personalised asthma profile, with implications on prognosis, pathophysiology and most importantly specific therapeutic responses. With the advent of increasing numbers of biological therapies and other interventional options such as bronchial thermoplasty, the importance of targeting expensive therapies to patients with the best chance of clinical response has huge health economic importance.
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Affiliation(s)
- Katrina Dean
- University Hospital South Manchester, Manchester, UK
| | - Robert Niven
- Manchester Academic Health Science Centre, The University of Manchester and University Hospital South Manchester, Manchester, UK.
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16
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Huo Y, Zhang HY. Genetic Mechanisms of Asthma and the Implications for Drug Repositioning. Genes (Basel) 2018; 9:genes9050237. [PMID: 29751569 PMCID: PMC5977177 DOI: 10.3390/genes9050237] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 04/21/2018] [Accepted: 04/26/2018] [Indexed: 12/20/2022] Open
Abstract
Asthma is a chronic disease that is caused by airway inflammation. The main features of asthma are airway hyperresponsiveness (AHR) and reversible airway obstruction. The disease is mainly managed using drug therapy. The current asthma drug treatments are divided into two categories, namely, anti-inflammatory drugs and bronchodilators. However, disease control in asthma patients is not very efficient because the pathogenesis of asthma is complicated, inducing factors that are varied, such as the differences between individual patients. In this paper, we delineate the genetic mechanisms of asthma, and present asthma-susceptible genes and genetic pharmacology in an attempt to find a diagnosis, early prevention, and treatment methods for asthma. Finally, we reposition some clinical drugs for asthma therapy, based on asthma genetics.
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Affiliation(s)
- Yue Huo
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, China.
| | - Hong-Yu Zhang
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, China.
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17
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Wisnewski AV, Kanyo J, Asher J, Goodrich JA, Barnett G, Patrylak L, Liu J, Redlich CA, Nassar AF. Reaction products of hexamethylene diisocyanate vapors with "self" molecules in the airways of rabbits exposed via tracheostomy. Xenobiotica 2018; 48:488-497. [PMID: 28489470 PMCID: PMC5863241 DOI: 10.1080/00498254.2017.1329569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 05/08/2017] [Accepted: 05/09/2017] [Indexed: 10/19/2022]
Abstract
1. Hexamethylenediisocyanate (HDI) is a widely used aliphatic diisocyanate and a well-recognized cause of occupational asthma. 2. "Self" molecules (peptides/proteins) in the lower airways, susceptible to chemical reactivity with HDI, have been hypothesized to play a role in asthma pathogenesis and/or chemical metabolism, but remain poorly characterized. 3. This study employed unique approaches to identify and characterize "self" targets of HDI reactivity in the lower airways. Anesthetized rabbits free breathed through a tracheostomy tube connected to chambers containing either, O2, or O2 plus ∼200 ppb HDI vapors. Following 60 minutes of exposure, the airways were lavaged and the fluid was analyzed by LC-MS and LC-MS/MS. 4. The low-molecular weight (<3 kDa) fraction of HDI exposed, but not control rabbit bronchoalveolar lavage (BAL) fluid identified 783.26 and 476.18 m/z [M+H]+ ions with high energy collision-induced dissociation (HCD) fragmentation patterns consistent with bis glutathione (GSH)-HDI and mono(GSH)-HDI. Proteomic analyses of the high molecular weight (>3 kDa) fraction of exposed rabbit BAL fluid identified HDI modification of specific lysines in uteroglobin (aka clara cell protein) and albumin. 5. In summary, this study utilized a unique approach to chemical vapor exposure in rabbits, to identify HDI reaction products with "self" molecules in the lower airways.
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Affiliation(s)
- Adam V Wisnewski
- a Department of Internal Medicine , Yale University School of Medicine , New Haven , CT , USA
| | - Jean Kanyo
- b W.M. Keck Foundation Biotechnology Resource Laboratory, Yale University School of Medicine , New Haven , CT , USA , and
| | - Jennifer Asher
- c Section of Comparative Medicine, Yale University School of Medicine , New Haven , CT , USA
| | - James A Goodrich
- c Section of Comparative Medicine, Yale University School of Medicine , New Haven , CT , USA
| | - Grace Barnett
- c Section of Comparative Medicine, Yale University School of Medicine , New Haven , CT , USA
| | - Lyn Patrylak
- c Section of Comparative Medicine, Yale University School of Medicine , New Haven , CT , USA
| | - Jian Liu
- a Department of Internal Medicine , Yale University School of Medicine , New Haven , CT , USA
| | - Carrie A Redlich
- a Department of Internal Medicine , Yale University School of Medicine , New Haven , CT , USA
| | - Ala F Nassar
- a Department of Internal Medicine , Yale University School of Medicine , New Haven , CT , USA
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18
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Sinus Computed Tomographic Findings in Adult Smokers and Nonsmokers with Asthma. Analysis of Clinical Indices and Biomarkers. Ann Am Thorac Soc 2018; 14:332-341. [PMID: 28029801 DOI: 10.1513/annalsats.201606-463oc] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
RATIONALE When they occur together, sinusitis and asthma are often thought to represent anatomically separate components of the same chronic inflammatory airway disease. Information about the effect of smoking on the interaction between sinusitis and asthma in patients who have both disorders is limited. OBJECTIVES To evaluate the effect of cigarette smoking on the relationship between the presence and severity of sinusitis and selected asthma-related indices in adults who have asthma. METHODS This study included 127 patients with severe asthma and 79 patients with mild to moderate asthma. Clinical data were obtained from all subjects during a 2-day stay at Hokkaido University Hospital (Sapporo, Japan). The Lund-Mackay scoring system was used to assess the anatomic extent and severity of sinusitis as revealed by sinus computed tomographic (CT) images obtained during hospitalization. We examined associations between Lund-Mackay scores and a variety of asthma-related indices and levels of biomarkers in blood and sputum. To clarify the effect of smoking on these associations, we conducted separate analyses for nonsmoking (<10 pack-years; n = 130) and smoking subjects (≥10 pack-years; n = 76). MEASUREMENTS AND MAIN RESULTS In our cohort of adults with asthma, we found significant positive relationships between the presence and severity of sinusitis as assessed by Lund-Mackay score and the severity of asthma as measured by percent predicted FEV1 or FEV1/FVC for nonsmoking subjects (<10 pack-years) but not for cigarette smokers (>10 pack-years). Lund-Mackay scores correlated with blood and sputum eosinophil counts, serum IgE levels, and fractional exhaled nitric oxide, regardless of smoking status. Lund-Mackay scores also showed significant positive associations with serum periostin and chemokine C-C motif ligand 18 levels, regardless of smoking status, whereas a positive association with plasma osteopontin level was seen only for nonsmoking subjects. CONCLUSIONS We found an association between the severity of sinusitis on CT imaging and the severity of concomitant asthma on spirometry for nonsmoking adults but not for smokers. In adults with asthma, CT imaging evidence of severe sinusitis indicates intense Th2-related inflammation, regardless of smoking status.
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19
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Hizawa N. Clinical approaches towards asthma and chronic obstructive pulmonary disease based on the heterogeneity of disease pathogenesis. Clin Exp Allergy 2017; 46:678-87. [PMID: 27009427 DOI: 10.1111/cea.12731] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Asthma and chronic obstructive pulmonary disease (COPD) are each heterogeneous disease classifications that include several clinical and pathophysiological phenotypes. This heterogeneity complicates characterization of each disease and, in some cases, hinders the selection of appropriate treatment. Therefore, in recent years, emphasis has been placed on improving our understanding of the various phenotypes of asthma and of COPD and identifying biomarkers for each phenotype. Likewise, the concept of the endotype has been gaining acceptance; an endotype is a disease subtype that is defined by unique or distinctive functional or pathophysiological mechanisms. Endotypes of asthma or COPD may be primarily characterized by increased susceptibility to type 2 inflammation, increased susceptibility to viral infections, bacterial colonization or impaired lung development. The 'Dutch hypothesis' is as follows: gene variants underlying particular endotypes interact with detrimental environmental stimuli (e.g. smoking, viral infection and air pollution) and contribute to the ultimate development of asthma, COPD or both. Novel approaches that involve multidimensional assessment should facilitate identification and management of the components that generate this heterogeneity. Ultimately, patients with chronic inflammatory lung diseases may be treated based on these endotypes as determined by the respective biomarkers that correspond to individual endotypes instead of on disease labels such as asthma, COPD or even asthma-COPD overlap syndrome (ACOS).
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Affiliation(s)
- N Hizawa
- Faculty of Medicine, Department of Pulmonary Medicine, University of Tsukuba, Tsukuba, Japan
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20
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Kanazawa J, Masuko H, Yatagai Y, Sakamoto T, Yamada H, Kaneko Y, Kitazawa H, Iijima H, Naito T, Saito T, Noguchi E, Konno S, Nishimura M, Hirota T, Tamari M, Hizawa N. Genetic association of the functional CDHR3 genotype with early-onset adult asthma in Japanese populations. Allergol Int 2017; 66:563-567. [PMID: 28318885 DOI: 10.1016/j.alit.2017.02.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 01/22/2017] [Accepted: 02/08/2017] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Recent studies have demonstrated that a coding SNP (rs6967330, Cys529→Tyr) in cadherin-related family member 3 (CDHR3), which was previously associated with wheezing illness and hospitalizations in infancy, could support efficient human rhinovirus C (RV-C) entry and replication. Here, we sought to examine the genetic contribution of this variant to the development of adult asthma. METHODS We performed a candidate gene case-control association study of 2 independent Japanese populations (a total of 3366 adults). The odds ratios (ORs) for association of the A allele at rs6967330 with adult asthma were calculated according to age at onset of asthma. In addition, the effect of the CDHR3 genotype on the development of specific asthma phenotypes was examined. RESULTS The A allele was associated with asthma (OR = 1.56; Mantel-Haenszel p = 0.0040) when the analysis was limited to patients with early-onset adult asthma. In addition, when the analysis was limited to atopic individuals, a stronger association of the CDHR3 variant with early-onset asthma was found, and interaction of the CDHR3 genotype with atopy was demonstrated. Finally, a significant association of this variant was specifically found with a phenotype of asthma characterized by atopy, early-onset, and lower lung function. CONCLUSIONS Our study supports the concept that the CDHR3 variant is an important susceptibility factor for severe adult asthma in individuals who develop the disease in early life. The interaction between the CDHR3 variant and atopy indicates that genetic predisposition to early respiratory viral infection is combined with atopy in promoting asthma.
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21
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Variants near the HLA complex group 22 gene (HCG22) confer increased susceptibility to late-onset asthma in Japanese populations. J Allergy Clin Immunol 2016; 138:281-283.e13. [PMID: 26830115 DOI: 10.1016/j.jaci.2015.11.023] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Revised: 10/06/2015] [Accepted: 11/24/2015] [Indexed: 01/05/2023]
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22
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Yamada H, Masuko H, Yatagai Y, Sakamoto T, Kaneko Y, Iijima H, Naito T, Noguchi E, Konno S, Nishimura M, Hirota T, Tamari M, Hizawa N. Role of Lung Function Genes in the Development of Asthma. PLoS One 2016; 11:e0145832. [PMID: 26752288 PMCID: PMC4709100 DOI: 10.1371/journal.pone.0145832] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2015] [Accepted: 12/09/2015] [Indexed: 12/02/2022] Open
Abstract
Although our previous GWAS failed to identify SNPs associated with pulmonary function at the level of genomewide significance, it did show that the heritability for FEV1/FVC was 41.6% in a Japanese population, suggesting that the heritability of pulmonary function traits can be explained by the additive effects of multiple common SNPs. In addition, our previous study indicated that pulmonary function genes identified in previous GWASs in non-Japanese populations accounted for 4.3% to 12.0% of the entire estimated heritability of FEV1/FVC in a Japanese population. Therefore, given that many loci with individual weak effects may contribute to asthma risk, in this study, we created a quantitative score of genetic load based on 16 SNPs implicated in lower lung function in both Japanese and non-Japanese populations. This genetic risk score (GRS) for lower FEV1/FVC was consistently associated with the onset of asthma (P = 9.6 × 10(-4)) in 2 independent Japanese populations as well as with the onset of COPD (P = 0.042). Clustering of asthma patients based on GRS levels indicated that an increased GRS may be responsible for the development of a particular phenotype of asthma characterized by early onset, atopy, and severer airflow obstruction.
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Affiliation(s)
- Hideyasu Yamada
- Department of Pulmonology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Hironori Masuko
- Department of Pulmonology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Yohei Yatagai
- Department of Pulmonology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Tohru Sakamoto
- Department of Pulmonology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Yoshiko Kaneko
- Department of Pulmonology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | | | | | - Emiko Noguchi
- Department of Medical Genetics, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Satoshi Konno
- Laboratory for Respiratory Diseases, Center for Genomic Medicine, Institute of Physical and Chemical Research, Tsurumi, Kanagawa, Japan
| | - Masaharu Nishimura
- Laboratory for Respiratory Diseases, Center for Genomic Medicine, Institute of Physical and Chemical Research, Tsurumi, Kanagawa, Japan
| | - Tomomitsu Hirota
- First Department of Medicine, School of Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Mayumi Tamari
- First Department of Medicine, School of Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Nobuyuki Hizawa
- Department of Pulmonology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
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23
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Rava M, Le Moual N, Dumont X, Guerra S, Siroux V, Jacquemin B, Kauffmann F, Bernard A, Nadif R. Serum club cell protein 16 is associated with asymptomatic airway responsiveness in adults: Findings from the French epidemiological study on the genetics and environment of asthma. Respirology 2015; 20:1198-205. [PMID: 26439880 DOI: 10.1111/resp.12609] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Revised: 12/23/2014] [Accepted: 05/06/2015] [Indexed: 01/31/2023]
Abstract
BACKGROUND AND OBJECTIVE Club cell secretory protein (CC-16) is a sensitive biomarker of airways epithelium integrity. It has gained interest as a biological marker in chronic lung diseases because of its presumed relationship to inflammation. Little is known about the association between CC-16 serum level and asthma, lung function and airway responsiveness (AR). METHODS Serum CC-16 level was determined by latex immunoassay in 1298 participants from the French Epidemiological case-control and family-based study on Genetics and Environment of Asthma (EGEA) (mean age 43 years; 49% men, 38% with asthma). Pre-bronchodilator lung function (forced expiratory volume in 1 s (FEV1 ), forced vital capacity (FVC) and FEV1 /FVC) and degree of AR, expressed as a function of the dose-response slope to methacholine test were measured. Standardized residuals CC-16 z-scores were obtained by regressing CC-16 level on the glomerular filtration rate. CC-16 z-scores were correlated with asthma, lung function and AR in participants with and without asthma. RESULTS CC-16 geometric mean level was 12.4 μg/L (range: 2.2-70.6 μg/L). In participants without asthma, lower CC-16 z-scores was associated with impaired FEV1 /FVC% (β = 0.50 (95% CI: 0.06, 0.95) and with higher degree of AR (β = 0.24 (95% CI: 0.09, 0.39)). CC-16 was not associated with impaired lung function or AR in participants with asthma. CONCLUSIONS Lower CC-16 serum level was associated with impaired lung function and AR, suggesting that serum CC-16 level may reflect early damages to the lung epithelium in adults without asthma.
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Affiliation(s)
- Marta Rava
- INSERM, VIMA: Aging and chronic diseases. Epidemiological and public health approaches, Villejuif, France.,University of Versailles St-Quentin-en-Yvelines, Versailles, France
| | - Nicole Le Moual
- INSERM, VIMA: Aging and chronic diseases. Epidemiological and public health approaches, Villejuif, France.,University of Versailles St-Quentin-en-Yvelines, Versailles, France
| | - Xavier Dumont
- Louvain Centre for Toxicology and Applied Pharmacology (LTAP), Catholic University of Louvain, Brussels, Belgium
| | - Stefano Guerra
- Centre for Research in Environmental Epidemiology (CREAL), IMIM-Hospital del Mar, CIBERESP, Barcelona, Spain.,Arizona Respiratory Center, University of Arizona, Tucson, AZ, USA
| | - Valerie Siroux
- University of Grenoble Alpes, IAB, Team of Environmental Epidemiology applied to Reproduction and Respiratory Health, Grenoble, France.,INSERM, IAB, Team of Environmental Epidemiology applied to Reproduction and Respiratory Health, Grenoble, France.,University Hospital of Grenoble, IAB, Team of Environmental Epidemiology applied to Reproduction and Respiratory Health, Grenoble, France.,INSERM, Institut Albert Bonniot, La Tronche, France
| | - Benedicte Jacquemin
- INSERM, VIMA: Aging and chronic diseases. Epidemiological and public health approaches, Villejuif, France.,University of Versailles St-Quentin-en-Yvelines, Versailles, France.,Centre for Research in Environmental Epidemiology (CREAL), IMIM-Hospital del Mar, CIBERESP, Barcelona, Spain
| | - Francine Kauffmann
- INSERM, CESP Centre for research in Epidemiology and Population Health, Respiratory and Environmental Epidemiology Team, Villejuif, France.,University of Paris-Sud, Villejuif, France
| | - Alfred Bernard
- Louvain Centre for Toxicology and Applied Pharmacology (LTAP), Catholic University of Louvain, Brussels, Belgium
| | - Rachel Nadif
- INSERM, VIMA: Aging and chronic diseases. Epidemiological and public health approaches, Villejuif, France.,University of Versailles St-Quentin-en-Yvelines, Versailles, France
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Abstract
OBJECTIVE To comprehensively evaluate the association between the CC16 gene A38G polymorphism and the risk of asthma. METHODS Studies were retrieved from databases including PubMed, EMBASE, Web of Science and the Chinese Biomedical Literature Database according to the inclusive and exclusive criteria. Odds ratios (ORs) with 95% confidence intervals (CIs) were used to assess the strength of the associations. MATERIALS Fifteen case-control studies with 1,623 cases and 3,294 controls were recruited for the analysis of the association between the CC16 gene A38G polymorphism and the risk of asthma. RESULTS The overall ORs showed no significant associations between the CC16 gene A38G polymorphism and the risk of asthma (AA vs. GG: OR=1.04, 95%CI=0.86-1.25; AG vs. GG: OR=1.08, 95%CI=0.94-1.24; AA + AG vs. GG: OR=1.07, 95%CI=0.94-1.22; AA vs. AG + GG: OR=1.01, 95%CI=0.85-1.19; A vs. G: OR=1.04, 95%CI=0.95-1.14). Moreover, similar results were obtained in the subgroup analysis stratified by ethnicity (Asian: AG vs. GG: OR=1.02, 95%CI=0.87-1.21; Caucasian: AG vs. GG: OR=1.22, 95%CI=0.94-1.57) and age (Child: AG vs. GG: OR=1.21, 95%CI=0.84-1.74; Adult: AG vs. GG: OR=1.06, 95%CI=0.91-1.23). CONCLUSION CC16 gene A38G polymorphism is not associated with the risk of asthma.
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Affiliation(s)
- Dan Cheng
- Department of Respiratory and Critical Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology; Key Laboratory of Respiratory Diseases, Ministry of Health, China
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Taniguchi N, Konno S, Isada A, Hattori T, Kimura H, Shimizu K, Maeda Y, Makita H, Hizawa N, Nishimura M. Association of the CAT-262C>T polymorphism with asthma in smokers and the nonemphysematous phenotype of chronic obstructive pulmonary disease. Ann Allergy Asthma Immunol 2014; 113:31-36.e2. [PMID: 24824229 DOI: 10.1016/j.anai.2014.04.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2014] [Revised: 04/14/2014] [Accepted: 04/16/2014] [Indexed: 10/25/2022]
Abstract
BACKGROUND Catalase (CAT) is a part of the active antioxidant defense system and has been studied with regard to its association with asthma and chronic obstructive pulmonary disease (COPD), which are heterogeneous obstructive pulmonary diseases characterized by chronic airway inflammation. We hypothesized that the CAT gene might be involved in the common pathogenesis underlying asthma and COPD. OBJECTIVE To evaluate the association of CAT polymorphisms with specific phenotypes of asthma and COPD to identify the common underlying pathophysiologic mechanisms of these 2 diseases. METHODS The -262C>T and -21A>T polymorphisms in the CAT gene were genotyped in 493 individuals with asthma, 265 with COPD, and 1,076 healthy controls. Asthmatic patients were categorized according to smoking status (smokers and nonsmokers) and age at onset (early onset and adult onset) as part of a case-control study. In patients with COPD, visual scoring (computed tomographic score) was assessed to determine emphysema severity, which was used to evaluate associations with CAT gene polymorphisms. RESULTS Overall, the -262C>T and -21A>T polymorphisms were not associated with asthma. However, the -262CT+TT genotype was significantly associated with adult-onset asthma in smokers (P = .005), and a significant interaction between smoking status and the effect of -262C>T genotype on asthma were observed (P = .01). In patients with COPD, this genotype was significantly associated with a low computed tomographic score (P = .03), which indicates a nonemphysematous type of COPD. CONCLUSION The present study indicates that the CAT gene is involved in the common pathogenesis underlying adult-onset asthma in smokers and the nonemphysematous type of COPD.
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Affiliation(s)
- Natsuko Taniguchi
- First Department of Medicine, Hokkaido University School of Medicine, Sapporo, Japan
| | - Satoshi Konno
- First Department of Medicine, Hokkaido University School of Medicine, Sapporo, Japan.
| | - Akira Isada
- First Department of Medicine, Hokkaido University School of Medicine, Sapporo, Japan
| | - Takeshi Hattori
- First Department of Medicine, Hokkaido University School of Medicine, Sapporo, Japan
| | - Hirokazu Kimura
- First Department of Medicine, Hokkaido University School of Medicine, Sapporo, Japan
| | - Kaoruko Shimizu
- First Department of Medicine, Hokkaido University School of Medicine, Sapporo, Japan
| | - Yukiko Maeda
- First Department of Medicine, Hokkaido University School of Medicine, Sapporo, Japan
| | - Hironi Makita
- First Department of Medicine, Hokkaido University School of Medicine, Sapporo, Japan
| | - Nobuyuki Hizawa
- Department of Pulmonology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Masaharu Nishimura
- First Department of Medicine, Hokkaido University School of Medicine, Sapporo, Japan
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