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Yoshizaki K, Frias DP, Maier K, Smelan J, Correia AT, Oliveira LMDS, Amato-Lourenço LF, Santillo BT, Prado CM, Oshiro TM, Barbuto JAM, Mauad T, Macchione M. Exposure of cinnamyl alcohol in co-culture of BEAS-2B and dendritic cells: Interaction between CYP450 and cytokines. J Appl Toxicol 2024; 44:1317-1328. [PMID: 38715282 DOI: 10.1002/jat.4623] [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: 01/23/2024] [Revised: 04/18/2024] [Accepted: 04/19/2024] [Indexed: 08/16/2024]
Abstract
The prevalence of fragrances in various hygiene products contributes to their sensorial allure. However, fragrances can induce sensitization in the skin or respiratory system, and the mechanisms involved in this process are incompletely understood. This study investigated the intricate mechanisms underlying the fragrance's effects on sensitization response, focusing on the interplay between CYP450 enzymes, a class of drug-metabolizing enzymes, and the adaptive immune system. Specifically, we assessed the expression of CYP450 enzymes and cytokine profiles in culture of BEAS-2B and mature dendritic cells (mDC) alone or in co-culture stimulated with 2 mM of a common fragrance, cinnamyl alcohol (CA) for 20 h. CYP1A1, CYP1A2, CYP1B1, CYP2A6, and CYP2A13 were analyzed by RT-PCR and IL-10, IL-12p70, IL-18, IL-33, and thymic stromal lymphopoietin (TSLP) by Cytometric Bead Array (CBA). Through RT-PCR analysis, we observed that CA increased CYP1A2 and CYP1B1 expression in BEAS-2B, with a further increased in BEAS-2B-mDC co-culture. Additionally, exposure to CA increased IL-12p70 levels in mDC rather than in BEAS-2B-mDC co-culture. In regards to IL-18, level was higher in BEAS-2B than in BEAS-2B-mDC co-culture. A positive correlation between the levels of IL-10 and CYP1B1 was found in mDC-CA-exposed and between IL-12p70 and CYP1A1 was found in BEAS-2B after CA exposure. However, IL-12p70 and CYP1A2 as well as IL-18, IL-33, and CYP1A1 levels were negative, correlated mainly in co-culture control. These correlations highlight potential immunomodulatory interactions and complex regulatory relationships. Overall, exposure to CA enhances CYP450 expression, suggesting that CA can influence immune responses by degrading ligands on xenosensitive transcription factors.
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Affiliation(s)
- Kelly Yoshizaki
- Laboratory of Experimental Environmental Pathology, Department of Pathology, São Paulo University Medical School, São Paulo, Brazil
| | - Daniela Perroni Frias
- Laboratory of Experimental Environmental Pathology, Department of Pathology, São Paulo University Medical School, São Paulo, Brazil
| | - Kevin Maier
- Laboratory of Experimental Environmental Pathology, Department of Pathology, São Paulo University Medical School, São Paulo, Brazil
| | - Juliana Smelan
- Laboratory of Experimental Environmental Pathology, Department of Pathology, São Paulo University Medical School, São Paulo, Brazil
| | - Aristides Tadeu Correia
- Thoracic Surgery Division, Department of Cardiopneumology, InCor, Clinics Hospital, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Luanda Mara da Silva Oliveira
- Laboratory of Medical Investigation in Dermatology and Immunodeficiences, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Luís Fernando Amato-Lourenço
- Laboratory of Experimental Environmental Pathology, Department of Pathology, São Paulo University Medical School, São Paulo, Brazil
- Institute of Advanced Studies (IEA) Global Cities Program, University of São Paulo, São Paulo, Brazil
| | - Bruna Tereso Santillo
- Laboratory of Medical Investigation in Dermatology and Immunodeficiences, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | | | - Telma Miyuki Oshiro
- Laboratory of Medical Investigation in Dermatology and Immunodeficiences, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Jose Alexandre M Barbuto
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Thais Mauad
- Laboratory of Experimental Environmental Pathology, Department of Pathology, São Paulo University Medical School, São Paulo, Brazil
| | - Mariangela Macchione
- Laboratory of Experimental Environmental Pathology, Department of Pathology, São Paulo University Medical School, São Paulo, Brazil
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Zhang P, Zheng Z, Sun H, Gao T, Xiao X. A review of common influencing factors and possible mechanisms associated with allergic diseases complicating tic disorders in children. Front Pediatr 2024; 12:1360420. [PMID: 38957776 PMCID: PMC11218626 DOI: 10.3389/fped.2024.1360420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 05/31/2024] [Indexed: 07/04/2024] Open
Abstract
Over the past few decades, the incidence of childhood allergic diseases has increased globally, and their impact on the affected child extends beyond the allergy itself. There is evidence of an association between childhood allergic diseases and the development of neurological disorders. Several studies have shown a correlation between allergic diseases and tic disorders (TD), and allergic diseases may be an important risk factor for TD. Possible factors influencing the development of these disorders include neurotransmitter imbalance, maternal anxiety or depression, gut microbial disorders, sleep disturbances, maternal allergic status, exposure to tobacco, and environmental factors. Moreover, gut microbial disturbances, altered immunological profiles, and DNA methylation in patients with allergic diseases may be potential mechanisms contributing to the development of TD. An in-depth investigation of the relationship between allergic diseases and TD in children will be important for preventing and treating TD.
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Affiliation(s)
- Panpan Zhang
- Department of Child Health, Dalian Municipal Women and Children’s Medical Center (Group), Dalian, Liaoning, China
- Dalian Medical University, Dalian, Liaoning, China
| | - Zhimin Zheng
- Department of Child Health, Dalian Municipal Women and Children’s Medical Center (Group), Dalian, Liaoning, China
- Dalian Medical University, Dalian, Liaoning, China
| | - Hao Sun
- Department of Child Health, Dalian Municipal Women and Children’s Medical Center (Group), Dalian, Liaoning, China
- Dalian Medical University, Dalian, Liaoning, China
| | - Tieying Gao
- Department of Child Health, Dalian Municipal Women and Children’s Medical Center (Group), Dalian, Liaoning, China
- Dalian Medical University, Dalian, Liaoning, China
| | - Xuwu Xiao
- Department of Child Health, Dalian Municipal Women and Children’s Medical Center (Group), Dalian, Liaoning, China
- Dalian Medical University, Dalian, Liaoning, China
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Choi Y, Cha J, Choi S. Evaluation of penalized and machine learning methods for asthma disease prediction in the Korean Genome and Epidemiology Study (KoGES). BMC Bioinformatics 2024; 25:56. [PMID: 38308205 PMCID: PMC10837879 DOI: 10.1186/s12859-024-05677-x] [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: 06/09/2022] [Accepted: 01/26/2024] [Indexed: 02/04/2024] Open
Abstract
BACKGROUND Genome-wide association studies have successfully identified genetic variants associated with human disease. Various statistical approaches based on penalized and machine learning methods have recently been proposed for disease prediction. In this study, we evaluated the performance of several such methods for predicting asthma using the Korean Chip (KORV1.1) from the Korean Genome and Epidemiology Study (KoGES). RESULTS First, single-nucleotide polymorphisms were selected via single-variant tests using logistic regression with the adjustment of several epidemiological factors. Next, we evaluated the following methods for disease prediction: ridge, least absolute shrinkage and selection operator, elastic net, smoothly clipped absolute deviation, support vector machine, random forest, boosting, bagging, naïve Bayes, and k-nearest neighbor. Finally, we compared their predictive performance based on the area under the curve of the receiver operating characteristic curves, precision, recall, F1-score, Cohen's Kappa, balanced accuracy, error rate, Matthews correlation coefficient, and area under the precision-recall curve. Additionally, three oversampling algorithms are used to deal with imbalance problems. CONCLUSIONS Our results show that penalized methods exhibit better predictive performance for asthma than that achieved via machine learning methods. On the other hand, in the oversampling study, randomforest and boosting methods overall showed better prediction performance than penalized methods.
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Affiliation(s)
- Yongjun Choi
- Department of Applied Artificial Intelligence, College of Computing, Hanyang University, 55 Hanyang-daehak-ro, Sangnok-gu, Ansan, 15588, South Korea
| | - Junho Cha
- Department of Applied Artificial Intelligence, College of Computing, Hanyang University, 55 Hanyang-daehak-ro, Sangnok-gu, Ansan, 15588, South Korea
| | - Sungkyoung Choi
- Department of Applied Artificial Intelligence, College of Computing, Hanyang University, 55 Hanyang-daehak-ro, Sangnok-gu, Ansan, 15588, South Korea.
- Department of Mathematical Data Science, College of Science and Convergence Technology, Hanyang University, 55 Hanyang-daehak-ro, Sangnok-gu, Ansan, 15588, South Korea.
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Elesela S, Arzola-Martínez L, Rasky A, Ptaschinski C, Hogan SP, Lukacs NW. Mucosal IgA immune complex induces immunomodulatory responses in allergic airway and intestinal T H2 disease. J Allergy Clin Immunol 2023; 152:1607-1618.e1. [PMID: 37604310 DOI: 10.1016/j.jaci.2023.08.006] [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: 09/06/2022] [Revised: 08/04/2023] [Accepted: 08/10/2023] [Indexed: 08/23/2023]
Abstract
BACKGROUND IgA is the most abundant immunoglobulin at the mucosal surface and although its role in regulating mucosal immunity is not fully understood, its presence is associated with protection from developing allergic disease. OBJECTIVE We sought to determine the role of IgA immune complexes for therapeutic application to mucosal allergic responses. METHODS Trinitrophenol (TNP)-specific IgA immune complexes were applied, using TNP-coupled ovalbumin (OVA), to airway and gut mucosal surfaces in systemically sensitized allergic animals to regulate allergen challenge responses. Animals were assessed for both pathologic and immune-mediated responses in the lung and gut, respectively, using established mouse models. RESULTS The mucosal application of IgA immune complexes in the lung and gut with TNP-OVA regulated TH2-driven allergic response in the lung and gut, reducing TH2 cytokines and mucus (lung) as well as diarrhea and temperature loss (gut), but increasing IL-10 and the number of regulatory T cells. The IgA-OVA immune complex did not alter peanut-induced anaphylaxis, indicating antigen specificity. Using OVA-specific DO.11-green fluorescent protein IL-4 reporter mouse-derived TH2-skewed cells in a transfer model demonstrated that mucosal IgA immune complex treatment reduced TH2-cell expansion and increased the number of regulatory T cells. To address a potential mechanism of action, TGF-β and IL-10 were induced in bone marrow-derived dendritic cells when they were exposed to IgA immune complex, suggesting a regulatory phenotype induced in dendritic cells that also led to an altered primary T-cell-mediated response in in vitro OVA-specific assays. CONCLUSIONS These studies highlight one possible mechanism of how allergen-specific IgA may provide a regulatory signal to reduce the development of allergic responses in the lung and gut.
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Affiliation(s)
- Srikanth Elesela
- Department of Pathology, University of Michigan Medical School, Ann Arbor, Mich; Mary H. Weiser Food Allergy Center, Ann Arbor, Mich
| | - Llilian Arzola-Martínez
- Department of Pathology, University of Michigan Medical School, Ann Arbor, Mich; Mary H. Weiser Food Allergy Center, Ann Arbor, Mich
| | - Andrew Rasky
- Department of Pathology, University of Michigan Medical School, Ann Arbor, Mich
| | - Catherine Ptaschinski
- Department of Pathology, University of Michigan Medical School, Ann Arbor, Mich; Mary H. Weiser Food Allergy Center, Ann Arbor, Mich
| | - Simon P Hogan
- Department of Pathology, University of Michigan Medical School, Ann Arbor, Mich; Mary H. Weiser Food Allergy Center, Ann Arbor, Mich
| | - Nicholas W Lukacs
- Department of Pathology, University of Michigan Medical School, Ann Arbor, Mich; Mary H. Weiser Food Allergy Center, Ann Arbor, Mich.
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Nash K, Minhas S, Metheny N, Gokhale KM, Taylor J, Bradbury-Jones C, Bandyopadhyay S, Nirantharakumar K, Adderley NJ, Chandan JS. Exposure to Domestic Abuse and the Subsequent Development of Atopic Disease in Women. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY. IN PRACTICE 2023; 11:1752-1756.e3. [PMID: 37295857 DOI: 10.1016/j.jaip.2023.03.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 03/08/2023] [Accepted: 03/09/2023] [Indexed: 06/12/2023]
Abstract
BACKGROUND Exposure to domestic violence and abuse (DVA) is a global public health issue associated with substantial morbidity and mortality. There are few high-quality studies that assess the impact of DVA exposure on the development of atopic disease. OBJECTIVE To examine the association between exposure to DVA and the subsequent development of atopy. METHODS In this population-based, retrospective, open cohort study, we identified women with no history of atopic disease between January 1, 1995 and September 30, 2019 from IQVIA Medical Research Data, an anonymized UK primary care dataset. We used clinical codes to identify exposed patients (those with a code identifying exposure to DVA; n = 13,852) and unexposed patients (n = 49,036), who were matched by age and deprivation quintile. Cox proportional hazards regression was used to calculate hazard ratios (HRs) (with 95% CIs) of developing atopic disease: asthma, atopic eczema, or allergic rhinoconjunctivitis. RESULTS During the study period, 967 exposed women (incidence rate, 20.10/1,000 person-years) developed atopic disease, compared with 2,607 unexposed women (incidence rate, 13.24/1,000 person-years). This translated to an adjusted HR of 1.52 (95% CI, 1.41-1.64) accounting for key confounders; asthma (adjusted HR = 1.69; 95% CI, 1.44-1.99), atopic eczema (adjusted HR = 1.40; 95% CI, 1.26-1.56), and allergic rhinoconjunctivitis (adjusted HR = 1.63; 95% CI, 1.45-1.84). CONCLUSIONS Domestic violence and abuse is a significant global public health issue. These results demonstrate a significant associated risk for developing atopic disease. Public health approaches to the prevention and detection of DVA are necessary to reduce the associated ill health burden.
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Affiliation(s)
- Katrina Nash
- Oxford University Clinical Academic Graduate School, University of Oxford, Oxford, United Kingdom; Royal Berkshire Hospital, Reading, United Kingdom
| | - Sonica Minhas
- Institute of Applied Health Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Nicholas Metheny
- School of Nursing and Health Studies, University of Miami, Miami, Fla
| | - Krishna M Gokhale
- Institute of Applied Health Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Julie Taylor
- School of Nursing, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom; Birmingham Women's and Children's Hospitals NHS Foundation Trust, Birmingham, United Kingdom
| | - Caroline Bradbury-Jones
- School of Nursing, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | | | - Krishnarajah Nirantharakumar
- Institute of Applied Health Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Nicola J Adderley
- Institute of Applied Health Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Joht Singh Chandan
- Institute of Applied Health Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom.
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Nash K, Minhas S, Metheny N, Gokhale KM, Taylor J, Bradbury-Jones C, Bandyopadhyay S, Nirantharakumar K, Chandan JS, Adderley NJ. Association between childhood maltreatment and atopy in the UK: A population based retrospective cohort study. EClinicalMedicine 2022; 53:101730. [PMID: 36467451 PMCID: PMC9716335 DOI: 10.1016/j.eclinm.2022.101730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 10/16/2022] [Accepted: 10/18/2022] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Childhood maltreatment affects over one in three children worldwide and is associated with a substantial disease burden. This study explores the association between childhood maltreatment and the development of atopic disease. METHODS We did a population-based retrospective matched open cohort study using participating general practices between 1st January 1995 and 30th September 2019. Read codes were utilised to identify patients exposed to childhood maltreatment (either suspected or confirmed) who were matched to up to four unexposed patients by age, sex, general practice, and Townsend deprivation quintile. Cox regression analysis was used to calculate adjusted (age, sex, Townsend deprivation quintile) hazard ratios (aHR) for development of atopy (asthma, atopic dermatitis, or allergic rhino conjunctivitis) during follow up in those without atopy at study entry. RESULTS 183,897 exposed patients were matched to 621,699 unexposed patients. During the follow up period, 18,555 patients (incidence rate (IR) 28.18 per 1000 person-years) in the exposed group developed atopic disease compared to the 68,368 (IR 23.58 per 1000 person-years) in the unexposed group, translating to an adjusted HR of 1.14 (95% CI 1.12-1.15). Notably, the risk of developing asthma was aHR 1.42 (95% CI 1.37-1.46). Associations were more pronounced in analyses restricted to females and confirmed cases of childhood maltreatment only. INTERPRETATION Considering the substantial health burden associated with childhood maltreatment, it is important to implement public health policies aimed at enhancing: 1) detection and primary prevention of childhood maltreatment, 2) secondary and tertiary prevention interventions to reduce the burden of ill health associated with exposure to maltreatment and 3) clinical awareness of such associations and subsequent knowledge of management. FUNDING None.
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Affiliation(s)
- Katrina Nash
- Royal Berkshire Hospital, Reading, RG1 5AN, UK
- Oxford University Clinical Academic Graduate School, Oxford, OX3 9DU, UK
| | - Sonica Minhas
- Institute of Applied Health Research, College of Medical and Dental Sciences, University of Birmingham, B152TT, UK
| | - Nicholas Metheny
- University of Miami School of Nursing and Health Studies, Miami, 33146, USA
| | - Krishna M. Gokhale
- Institute of Applied Health Research, College of Medical and Dental Sciences, University of Birmingham, B152TT, UK
| | - Julie Taylor
- School of Nursing, College of Medical and Dental Sciences, University of Birmingham, B152TT, UK
- Birmingham Women's and Children's Hospitals NHS Foundation Trust, Birmingham, UK
| | - Caroline Bradbury-Jones
- School of Nursing, College of Medical and Dental Sciences, University of Birmingham, B152TT, UK
| | | | - Krishnarajah Nirantharakumar
- Institute of Applied Health Research, College of Medical and Dental Sciences, University of Birmingham, B152TT, UK
| | - Joht Singh Chandan
- Institute of Applied Health Research, College of Medical and Dental Sciences, University of Birmingham, B152TT, UK
- Corresponding author.
| | - Nicola J. Adderley
- Institute of Applied Health Research, College of Medical and Dental Sciences, University of Birmingham, B152TT, UK
- Corresponding author.
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Abstract
OBJECTIVES Bronchiolitis is a common indication for mechanical ventilation in the PICU. Both bronchiolitis and invasive mechanical ventilation may cause adverse long-term pulmonary outcomes. This study investigates children with a history of invasive mechanical ventilation for bronchiolitis, addressing: 1) the extent, 2) potential explanatory factors, and 3) possible impact on daily life activities of adverse long-term pulmonary outcomes. DESIGN Single-center cohort study. SETTING Outpatient PICU follow-up clinic. PATIENTS Children 6-12 years old with a history of invasive mechanical ventilation for bronchiolitis (age < 2 yr). INTERVENTIONS None. MEASUREMENTS AND MAIN RESULTS Long-term pulmonary outcomes were assessed by a standardized questionnaire and by spirometry. Nineteen out of 74 included children (26%) had adverse long-term pulmonary outcomes, of whom the majority had asthma (14/74, 19%). By logistic regression analysis, we assessed whether background characteristics and PICU-related variables were associated with long-term pulmonary outcomes. In general, we failed to identify any explanatory factors associated with adverse long-term pulmonary outcomes. Nonetheless, atopic disease in family and longer duration of invasive mechanical ventilation (days) were associated with greater odds of having asthma at follow-up (odds ratio, 6.4 [95% CI, 1.2-36.0] and 1.3 [95% CI, 1.0-1.7], respectively). Adverse pulmonary outcome at follow-up was associated with more frequent use of pulmonary medication after PICU discharge. In comparison with those without adverse pulmonary outcomes, we did not identify any difference in frequency of sports performance or school absenteeism. CONCLUSIONS In this single-center cohort, one-quarter of the children attending follow-up with a history of invasive mechanical ventilation for bronchiolitis had adverse, mostly previously undetected, long-term pulmonary outcomes at 6-12 years. Atopic disease in family and longer duration of invasive mechanical ventilation were associated with presence of asthma. The presence of adverse pulmonary outcomes was associated with more frequent use of pulmonary medication after PICU discharge.
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Kenmoe S, Atenguena Okobalemba E, Takuissu GR, Ebogo-Belobo JT, Oyono MG, Magoudjou-Pekam JN, Kame-Ngasse GI, Taya-Fokou JB, Mbongue Mikangue CA, Kenfack-Momo R, Mbaga DS, Bowo-Ngandji A, Kengne-Ndé C, Esemu SN, Njouom R, Ndip L. Association between early viral lower respiratory tract infections and subsequent asthma development. World J Crit Care Med 2022; 11:298-310. [PMID: 36051944 PMCID: PMC9305678 DOI: 10.5492/wjccm.v11.i4.298] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 04/25/2022] [Accepted: 06/17/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The association between hospitalization for human respiratory syncytial virus (HRSV) bronchiolitis in early childhood and subsequent asthma is well established. The long-term prognosis for non-bronchiolitis lower respiratory tract infections (LRTI) caused by viruses different from HRSV and rhinovirus, on the other hand, has received less interest.
AIM To investigate the relationship between infant LRTI and later asthma and examine the influence of confounding factors.
METHODS The PubMed and Global Index Medicus bibliographic databases were used to search for articles published up to October 2021 for this systematic review. We included cohort studies comparing the incidence of asthma between patients with and without LRTI at ≤ 2 years regardless of the virus responsible. The meta-analysis was performed using the random effects model. Sources of heterogeneity were assessed by stratified analyses.
RESULTS This review included 15 articles (18 unique studies) that met the inclusion criteria. LRTIs at ≤ 2 years were associated with an increased risk of subsequent asthma up to 20 years [odds ratio (OR) = 5.0, 95%CI: 3.3-7.5], with doctor-diagnosed asthma (OR = 5.3, 95%CI: 3.3-8.6), current asthma (OR = 5.4, 95%CI: 2.7-10.6), and current medication for asthma (OR = 1.2, 95%CI: 0.7-3.9). Our overall estimates were not affected by publication bias (P = 0.671), but there was significant heterogeneity [I2 = 58.8% (30.6-75.5)]. Compared to studies with hospitalized controls without LRTI, those with ambulatory controls had a significantly higher strength of association between LRTIs and subsequent asthma. The strength of the association between LRTIs and later asthma varied significantly by country and age at the time of the interview. The sensitivity analyses including only studies with similar proportions of confounding factors (gender, age at LRTI development, age at interview, gestational age, birth weight, weight, height, smoking exposure, crowding, family history of atopy, and family history of asthma) between cases and controls did not alter the overall estimates.
CONCLUSION Regardless of the causative virus and confounding factors, viral LRTIs in children < 2 years are associated with an increased risk of developing a subsequent asthma. Parents and pediatricians should be informed of this risk.
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Affiliation(s)
- Sebastien Kenmoe
- Department of Microbiology and Parasitology, University of Buea, Buea 00237, Cameroon
- Department of Virology, Centre Pasteur of Cameroon, Yaounde 00237, Cameroon
| | | | - Guy Roussel Takuissu
- Centre of Research in Food, Food Security and Nutrition, Institute of Medical Research and Medicinal Plants Studies, Yaounde 00237, Cameroon
| | - Jean Thierry Ebogo-Belobo
- Medical Research Centre, Institute of Medical Research and Medicinal Plants Studies, Yaounde 00237, Cameroon
| | - Martin Gael Oyono
- Laboratory of Parasitology and Ecology, The University of Yaounde I, Yaounde 00237, Cameroon
| | | | - Ginette Irma Kame-Ngasse
- Medical Research Centre, Institute of Medical Research and Medicinal Plants Studies, Yaounde 00237, Cameroon
| | | | | | - Raoul Kenfack-Momo
- Department of Biochemistry, The University of Yaounde I, Yaounde 00237, Cameroon
| | - Donatien Serge Mbaga
- Department of Microbiology, The University of Yaounde I, Yaounde 00237, Cameroon
| | - Arnol Bowo-Ngandji
- Department of Microbiology, The University of Yaounde I, Yaounde 00237, Cameroon
| | - Cyprien Kengne-Ndé
- Epidemiological Surveillance, Evaluation and Research Unit, National Aids Control Committee, Douala 00237, Cameroon
| | - Seraphine Nkie Esemu
- Department of Microbiology and Parasitology, University of Buea, Buea 00237, Cameroon
| | - Richard Njouom
- Department of Virology, Centre Pasteur of Cameroon, Yaounde 00237, Cameroon
| | - Lucy Ndip
- Department of Microbiology and Parasitology, University of Buea, Buea 00237, Cameroon
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Metabolomic Profiling of Samples from Pediatric Asthma Patients Unveils Deficient Nutrients in African Americans. iScience 2022; 25:104650. [PMID: 35811841 PMCID: PMC9263988 DOI: 10.1016/j.isci.2022.104650] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 06/06/2022] [Accepted: 06/16/2022] [Indexed: 11/26/2022] Open
Abstract
Plasma metabolomics represents a potentially powerful approach to understand the biochemical mechanisms of nutrition and metabolism in asthma. This study aims to acquire knowledge on plasma metabolites in asthma, which may provide avenues for nutrition therapy, as well as explanations for the observed effects in existing therapies. This study investigated 249 metabolites from 18 metabolite groups in a large cohort of African American population, including 602 pediatric patients with asthma and 593 controls, using a nuclear magnetic resonance (NMR) metabolomics platform. Decreased levels of citrate, ketone bodies, and two amino acids histidine (His) and glutamine (Gln), were observed in asthma cases compared to controls. Metabolites for lipid metabolism lost significance after controlling for comorbid obesity. For the first time, this study depicts a broad panorama of lipid metabolism and nutrition in asthma. Supplementation or augmentation of nutrients that are deficient may be beneficial for asthma care. Asthma is a major health issue in African Americans Metabolomics represents a powerful approach to understand the metabolism in asthma We observed decreased citrate, ketone bodies, and amino acids in the plasma Supplementation of nutrients that are deficient may be beneficial for asthma care
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10
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Kölli F, Breyer MK, Hartl S, Burghuber O, Wouters EFM, Sigsgaard T, Pohl W, Kohlböck G, Breyer-Kohansal R. Aero-Allergen Sensitization in the General Population: Longitudinal Analyses of the LEAD (Lung Heart Social Body) Study. J Asthma Allergy 2022; 15:461-473. [PMID: 35431559 PMCID: PMC9012316 DOI: 10.2147/jaa.s349614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 03/04/2022] [Indexed: 11/23/2022] Open
Affiliation(s)
- Franziska Kölli
- Sigmund Freud University, Faculty of Medicine, Vienna, Austria
- Ludwig Boltzmann Institute for Lung Health, Vienna, Austria
- Correspondence: Franziska Kölli, Ludwig Boltzmann Institute for Lung Health, Sanatroium Street 2, Vienna, 1140, Austria, Tel +436645127500, Email
| | - Marie-Kathrin Breyer
- Ludwig Boltzmann Institute for Lung Health, Vienna, Austria
- Department of Respiratory and Critical Care Medicine, Clinic Penzing, Vienna, Austria
| | - Sylvia Hartl
- Sigmund Freud University, Faculty of Medicine, Vienna, Austria
- Ludwig Boltzmann Institute for Lung Health, Vienna, Austria
- Department of Respiratory and Critical Care Medicine, Clinic Penzing, Vienna, Austria
| | - Otto Burghuber
- Sigmund Freud University, Faculty of Medicine, Vienna, Austria
- Ludwig Boltzmann Institute for Lung Health, Vienna, Austria
| | - Emiel F M Wouters
- Ludwig Boltzmann Institute for Lung Health, Vienna, Austria
- NUTRIM School of Nutrition and Translational Research in Metabolism, University Medical Center, Maastricht, The Netherlands
| | - Torben Sigsgaard
- Department of Public Health, Section of Environment, Occupation & Health, Aarhus University, Aarhus, Denmark
| | - Wolfgang Pohl
- Karl Landsteiner Institute for Clinical and Experimental Pneumology, Clinic Hietzing, Vienna, Austria
| | | | - Robab Breyer-Kohansal
- Ludwig Boltzmann Institute for Lung Health, Vienna, Austria
- Department of Respiratory and Critical Care Medicine, Clinic Penzing, Vienna, Austria
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11
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Li X, Han Z, Wang F, Qiao J. The STAT6 inhibitor AS1517499 reduces the risk of asthma in mice with 2,4-dinitrochlorobenzene-induced atopic dermatitis by blocking the STAT6 signaling pathway. ALLERGY, ASTHMA, AND CLINICAL IMMUNOLOGY : OFFICIAL JOURNAL OF THE CANADIAN SOCIETY OF ALLERGY AND CLINICAL IMMUNOLOGY 2022; 18:12. [PMID: 35177102 PMCID: PMC8851827 DOI: 10.1186/s13223-022-00652-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 01/22/2022] [Indexed: 11/10/2022]
Abstract
BACKGROUND Epidemiological studies have revealed a link between atopic dermatitis (AD) and asthma. AS1517499, a selective signal transducer and activation of transcription 6 (STAT6) inhibitor, has been shown to effectively block this connection. In this study, we further explored the underlying mechanism by constructing an AD mouse model. METHODS Female BALB/c mice were randomly divided into four groups (n = 10/group). The AD mouse model was established by 2,4-dinitrochlorobenzene induction with repeated ovalbumin challenge. AS1517499 and corn oil were used as treatment interventions. The features of airway inflammation, remodeling, and hyperactivity were analyzed. RESULTS Active use of AS1517499 in AD mice effectively reduced Th2-related cytokine levels, alleviated airway eosinophil and lymphocyte infiltration, and regulated GATA3/Foxp3 levels and subepithelial collagen deposition. These changes might be due to specific blockade of the STAT6 signaling pathway. CONCLUSION AS1517499 could partially block the association between AD and asthma by specifically inhibiting the STAT6 signaling pathway.
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Affiliation(s)
- Xueying Li
- Department of Respiratory, Shanghai Ninth People's Hospital Affiliated Shanghai JiaoTong University School of Medicine, No.639, Zhizaoju Road, Shanghai, 200001, China
| | - Zhaoqing Han
- Department of Respiratory, Shanghai Ninth People's Hospital Affiliated Shanghai JiaoTong University School of Medicine, No.639, Zhizaoju Road, Shanghai, 200001, China
| | - Feng Wang
- Department of Thoracic Surgery, Shanghai Ninth People's Hospital Affiliated Shanghai JiaoTong University School of Medicine, No.639, Zhizaoju Road, Shanghai, 200001, China.
| | - Jianou Qiao
- Department of Respiratory, Shanghai Ninth People's Hospital Affiliated Shanghai JiaoTong University School of Medicine, No.639, Zhizaoju Road, Shanghai, 200001, China.
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12
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Rivera-Sepúlveda A, García-Rivera E, Castro M, Soto F. Risk Factors Associated With Bronchiolitis in Puerto Rican Children. Pediatr Emerg Care 2021; 37:e1593-e1599. [PMID: 32530834 PMCID: PMC7728621 DOI: 10.1097/pec.0000000000002130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE The objective of this study was to identify frequency, severity, and risk factors associated with bronchiolitis in Puerto Rican children. METHODS A cross-sectional was study performed at 4 emergency departments of Puerto Rico's metropolitan area, between June 2014 and May 2015. We included children younger than 24 months, with a clinical diagnosis of bronchiolitis, who were born and living in Puerto Rico at the time of recruitment. A physician-administered questionnaire inquiring about the patient's medical, family, and social history and a bronchiolitis severity assessment were performed. Daily weather conditions were monitored, and aeroallergens were collected with an air sample and precision weather station within the metropolitan area to evaluate environmental factors. RESULTS We included 600 patients for 12 months. More than 50% of the recruited patients had a previous episode of bronchiolitis, of which 40% had been hospitalized. Older age (odds ratio [OR], 18.3; 95% confidence interval [CI], 9.2-36.5), male sex (OR, 1.6; 95% CI, 1.1-2.4), history of asthma (OR, 8.9; 95% CI, 3.6-22), allergic rhinitis (OR, 3.6; 95% CI, 1.8-7.4), and smoke exposure by a caretaker (OR, 2.3; 95% CI, 1.2-4.4) were predictors of bronchiolitis episodes. Bronchiolitis episodes were associated with higher severity score (P = 0.040), increased number of atopic factors (P < 0.001), and higher number of hospitalizations (P < 0.001). CONCLUSIONS This study identifies Puerto Rican children who may present a severe clinical course of disease without traditional risk factors. Atopy-related factors are associated with frequency and severity of bronchiolitis. Puerto Rican children present risk factors related to atopy earlier in life, some of which may be modified to prevent the subsequent development of asthma.
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Affiliation(s)
| | | | - Mario Castro
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Washington University School of Medicine, St Louis, MO
| | - Fernando Soto
- Department of Emergency Medicine, School of Medicine, Medical Sciences Campus, University of Puerto Rico, San Juan, Puerto Rico
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13
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Zhou Y, Chen J, Dong Y, Shen J, Tian M, Yang Y, Song L, Li J. Maternal tobacco exposure during pregnancy and allergic rhinitis in offspring: A systematic review and meta-analysis. Medicine (Baltimore) 2021; 100:e26986. [PMID: 34449468 PMCID: PMC8389918 DOI: 10.1097/md.0000000000026986] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 07/26/2021] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Maternal tobacco exposure during pregnancy is known to cause a potential hazard to the offspring's health. So far, published studies have shown no consistent results with whether tobacco exposure in utero is causally linked to the development of allergic rhinitis in offspring. The aim of this study was to comprehensively evaluate the association between maternal tobacco exposure during pregnancy and allergic rhinitis in offspring by meta-analysis and to provide reference for clinical work. METHODS Literatures were searched in CNKI, Wanfang Data, VIP, SinoMed, PubMed, Web of science and Embase up to September 30,2020. Screening, inclusion, quality assessment, data extraction and data analysis of the literatures were conducted. Meta-analysis was performed with Revman 5.3 and State15.1 software. Odds ratio (OR) and 95%CI were used as observation indicators. RESULTS We had retrieved 16 articles with 22 independent datasets and 11,49,879 sample size. When all the studies were analyzed together, the results showed that maternal smoking exposure during pregnancy would increase the risk of allergic rhinitis in offspring (OR = 1.13, 95%CI:1.02-1.26), especially maternal passive smoking during pregnancy (OR = 1.39, 95%CI:1.05-1.84). But subgroup analysis showed that maternal active smoking during pregnancy was only significantly associated with offspring allergic rhinitis in cross-sectional studies (OR = 1.24, 95%CI:1.07-1.45) and study done in America study (OR = 1.22, 95%CI:1.05-1.42). CONCLUSIONS Tobacco exposure during pregnancy could increase the risk of allergic rhinitis in offspring. The importance of avoiding prenatal tobacco exposure should be emphasized more for the health of next generation in the public.
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Affiliation(s)
- Yaqian Zhou
- Key Laboratory of Model Animals and Stem Cell Biology in Hunan Province, School of Medicine, Hunan Normal University, Hunan, China
| | - JunRong Chen
- Key Laboratory of Model Animals and Stem Cell Biology in Hunan Province, School of Medicine, Hunan Normal University, Hunan, China
| | - Yunpeng Dong
- Department of Otolatyngoloty-Head and Neck Surgery, Yichang Central People's Hospital, the First College of Clinical Medical Science, Three Gorges University, Hubei, China
| | - Jinhua Shen
- Key Laboratory of Model Animals and Stem Cell Biology in Hunan Province, School of Medicine, Hunan Normal University, Hunan, China
| | - Mei Tian
- Key Laboratory of Model Animals and Stem Cell Biology in Hunan Province, School of Medicine, Hunan Normal University, Hunan, China
| | - Yide Yang
- Key Laboratory of Molecular Epidemiology of Hunan Province, School of Medicine, Hunan Normal University, Hunan, China
| | - Liujiang Song
- Gene Therapy Center, University of North Carolina at Chapel Hill, North Carolina, USA
| | - Jian Li
- Key Laboratory of Model Animals and Stem Cell Biology in Hunan Province, School of Medicine, Hunan Normal University, Hunan, China
- Key Laboratory of Study and Discovery of Small Targeted Molecules of Hunan Province, School of Medicine, Hunan Normal University, Hunan, China
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14
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Atopy risk among school-aged children in relation to early exposures to a farm environment: A systematic review. Respir Med 2021; 186:106378. [PMID: 34252858 DOI: 10.1016/j.rmed.2021.106378] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 03/22/2021] [Accepted: 03/24/2021] [Indexed: 11/21/2022]
Abstract
BACKGROUND AND OBJECTIVES Childhood atopy is a complex condition with both a genetic and an environmental component. This systematic review will explore the current understanding of the importance of early life exposures to a farm in the development of atopy measured by objective markers of skin prick testing, and specific IgE measurements in school age children. METHODS A systematic review was performed. RESULTS Among 7285 references identified, 14 studies met the inclusion criteria (13 cross-sectional studies and 1 case-control study). The results were fairly consistent in that early farm-related exposures can protect children from becoming atopic at school age. In general, there was heterogeneity in the assessment of outcomes and exposures. CONCLUSIONS Early-life farm exposures are associated with a protective effect on childhood atopy as assessed by objective markers. Future work should focus on understanding specific farm exposures that may important in these associations between atopy and farm exposures in children.
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15
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Tiwari D, Gupta P. Nuclear Receptors in Asthma: Empowering Classical Molecules Against a Contemporary Ailment. Front Immunol 2021; 11:594433. [PMID: 33574813 PMCID: PMC7870687 DOI: 10.3389/fimmu.2020.594433] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 12/09/2020] [Indexed: 02/06/2023] Open
Abstract
The escalation in living standards and adoption of 'Western lifestyle' has an allied effect on the increased allergy and asthma burden in both developed and developing countries. Current scientific reports bespeak an association between allergic diseases and metabolic dysfunction; hinting toward the critical requirement of organized lifestyle and dietary habits. The ubiquitous nuclear receptors (NRs) translate metabolic stimuli into gene regulatory signals, integrating diet inflences to overall developmental and physiological processes. As a consequence of such promising attributes, nuclear receptors have historically been at the cutting edge of pharmacy world. This review discusses the recent findings that feature the cardinal importance of nuclear receptors and how they can be instrumental in modulating current asthma pharmacology. Further, it highlights a possible future employment of therapy involving dietary supplements and synthetic ligands that would engage NRs and aid in eliminating both asthma and linked comorbidities. Therefore, uncovering new and evolving roles through analysis of genomic changes would represent a feasible approach in both prevention and alleviation of asthma.
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Affiliation(s)
| | - Pawan Gupta
- Department of Molecular Biology, Council of Scientific and Industrial Research, Institute of Microbial Technology, Chandigarh, India
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16
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Lee CD, Choi WS, Choi YG, Kang HS, Lee WT, Kim HJ, Lee JY. Inhibition of phosphodiesterase suppresses allergic lung inflammation by regulating MCP-1 in an OVA-induced asthma murine model with co-exposure to lipopolysaccharide. J Int Med Res 2020; 48:300060520903663. [PMID: 32054359 PMCID: PMC7111082 DOI: 10.1177/0300060520903663] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Objective Methods Results Conclusion
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Affiliation(s)
- Chang Doo Lee
- College of Pharmacy, Chung-Ang University, Seoul, Republic of Korea
| | - Won Seok Choi
- College of Pharmacy, Chung-Ang University, Seoul, Republic of Korea
| | - Yong Geon Choi
- College of Pharmacy, Chung-Ang University, Seoul, Republic of Korea
| | - Hyun Sik Kang
- College of Pharmacy, Chung-Ang University, Seoul, Republic of Korea
| | - Wang Tae Lee
- College of Pharmacy, Chung-Ang University, Seoul, Republic of Korea
| | - Hong Jo Kim
- College of Pharmacy, Chung-Ang University, Seoul, Republic of Korea
| | - Ji-Yun Lee
- College of Pharmacy, Chung-Ang University, Seoul, Republic of Korea
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17
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Li HT, Lin YS, Ye QM, Yang XN, Zou XL, Yang HL, Zhang TT. Airway inflammation and remodeling of cigarette smoking exposure ovalbumin-induced asthma is alleviated by CpG oligodeoxynucleotides via affecting dendritic cell-mediated Th17 polarization. Int Immunopharmacol 2020; 82:106361. [PMID: 32135492 DOI: 10.1016/j.intimp.2020.106361] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 02/20/2020] [Accepted: 02/26/2020] [Indexed: 12/15/2022]
Abstract
Cigarette smoking (CS) is common in asthma, aggravating inflammatory reactions. However, the current treatment strategies for asthma are still not effective enough, and novel therapeutic approaches are required for CS-induced asthmatic disorders. We here investigated the ability of CpG oligodeoxynucleotides (CpG-ODNs) to inhibit airway inflammation and remodeling in ovalbumin (OVA)-associated asthma in mice exposed to chronic CS, revealing potential mechanistic insights. Lung tissue specimens were histologically analyzed. Th1/Th2/Th17 associated cytokines in serum, bronchoalveolar lavage fluid (BALF), and lung specimens were quantitated by ELISA, qRT-PCR and immunoblot. Parameters of bone marrow-derived dendritic cells (BMDCs) functions were evaluated as well. The results showed that BALB/c mice after CS and OVA treatments developed an asthmatic phenotype with airway inflammation involving both eosinophils and neutrophils, goblet cell metaplasia, airway remodeling, and elevated OVA-specific serum IgE, serum IL-17A, and BALF Th17/Th2 associated cytokines. CpG-ODNs and budesonide were found to synergistically inhibit inflammatory cell recruitment in the lung, airway remodeling, IgE synthesis, and Th17/Th2 associated cytokines. Mechanistically, CpG-ODNs and budesonide acted synergistically on BMDCs via downregulation of TSLP receptor (TSLPR) and IL-23 production, and subsequently contributed to dampen Th17/Th2 polarization in CS-associated asthma. In conclusion, combined administration of CpG-ODNs and budesonide, in a synergistic manner, inhibits airway inflammation, and tissue remodeling mediated by BMDCs by regulating IL-23 secretion and blocking TSLP signaling, which subsequently contribute to alleviate Th17/Th2 imbalance in CS-associated asthma.
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Affiliation(s)
- Hong-Tao Li
- Department of Pulmonary and Critical Care Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Institute of Respiratory Diseases of Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Yu-Sen Lin
- Department of Pulmonary and Critical Care Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Institute of Respiratory Diseases of Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Qi-Mei Ye
- Department of Pulmonary and Critical Care Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Institute of Respiratory Diseases of Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Xue-Na Yang
- Department of Pulmonary and Critical Care Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Institute of Respiratory Diseases of Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Xiao-Ling Zou
- Department of Pulmonary and Critical Care Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Institute of Respiratory Diseases of Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Hai-Ling Yang
- Department of Pulmonary and Critical Care Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Institute of Respiratory Diseases of Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Tian-Tuo Zhang
- Department of Pulmonary and Critical Care Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Institute of Respiratory Diseases of Sun Yat-Sen University, Guangzhou, People's Republic of China.
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18
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Roach KA, Stefaniak AB, Roberts JR. Metal nanomaterials: Immune effects and implications of physicochemical properties on sensitization, elicitation, and exacerbation of allergic disease. J Immunotoxicol 2019; 16:87-124. [PMID: 31195861 PMCID: PMC6649684 DOI: 10.1080/1547691x.2019.1605553] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 03/15/2019] [Accepted: 04/05/2019] [Indexed: 12/25/2022] Open
Abstract
The recent surge in incorporation of metallic and metal oxide nanomaterials into consumer products and their corresponding use in occupational settings have raised concerns over the potential for metals to induce size-specific adverse toxicological effects. Although nano-metals have been shown to induce greater lung injury and inflammation than their larger metal counterparts, their size-related effects on the immune system and allergic disease remain largely unknown. This knowledge gap is particularly concerning since metals are historically recognized as common inducers of allergic contact dermatitis, occupational asthma, and allergic adjuvancy. The investigation into the potential for adverse immune effects following exposure to metal nanomaterials is becoming an area of scientific interest since these characteristically lightweight materials are easily aerosolized and inhaled, and their small size may allow for penetration of the skin, which may promote unique size-specific immune effects with implications for allergic disease. Additionally, alterations in physicochemical properties of metals in the nano-scale greatly influence their interactions with components of biological systems, potentially leading to implications for inducing or exacerbating allergic disease. Although some research has been directed toward addressing these concerns, many aspects of metal nanomaterial-induced immune effects remain unclear. Overall, more scientific knowledge exists in regards to the potential for metal nanomaterials to exacerbate allergic disease than to their potential to induce allergic disease. Furthermore, effects of metal nanomaterial exposure on respiratory allergy have been more thoroughly-characterized than their potential influence on dermal allergy. Current knowledge regarding metal nanomaterials and their potential to induce/exacerbate dermal and respiratory allergy are summarized in this review. In addition, an examination of several remaining knowledge gaps and considerations for future studies is provided.
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Affiliation(s)
- Katherine A Roach
- a Allergy and Clinical Immunology Branch (ACIB) , National Institute of Occupational Safety and Health (NIOSH) , Morgantown , WV , USA
- b School of Pharmacy , West Virginia University , Morgantown , WV , USA
| | - Aleksandr B Stefaniak
- c Respiratory Health Division (RHD) , National Institute of Occupational Safety and Health (NIOSH) , Morgantown , WV , USA
| | - Jenny R Roberts
- a Allergy and Clinical Immunology Branch (ACIB) , National Institute of Occupational Safety and Health (NIOSH) , Morgantown , WV , USA
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19
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Noh SR, Kim JA, Cheong HK, Ha M, Jee YK, Park MS, Choi KH, Kim H, Cho SI, Choi K, Paek D. Hebei Spirit oil spill and its long-term effect on children's asthma symptoms. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 248:286-294. [PMID: 30798030 DOI: 10.1016/j.envpol.2019.02.034] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 02/11/2019] [Accepted: 02/12/2019] [Indexed: 06/09/2023]
Abstract
On December 7th, 2007, an estimated 12,547 kL of crude oil was spilled from the collision of Hebei Spirit near residential area. Our previous study demonstrated worsening of children's asthma symptoms one year after the accident. This study investigated long-term effect of the oil spill on children's asthma symptoms up to five years after the accident. All elementary and middle school students in the exposure area were surveyed on one year (n = 655), three years (664), and five years (611) after the accident. Oil spill exposure was estimated using two estimates including distance from the oil spill (A) and modeled estimates of benzene, toluene, ethylbenzene, and xylene (BTEX) compounds (B), and each was dichotomously categorized (A: high-exposure vs low-exposure; B: ≥20 mg/m3 vs < 20 mg/m3). Asthma symptoms were evaluated using a standard questionnaire. Oil spill exposure estimates were associated with asthma symptoms on one year (odds ratio (95% confidence interval) A: 1.9 (1.1-3.1); B: 1.6 (0.9-2.7)), three years (A: 1.9 (1.1-3.2); B: 1.3 (0.8-2.2)), and five years (A: 1.2 (0.7-1.9); B: 1.8 (1.1-2.8)) after the oil spill. Significant longitudinal relationship between oil spill exposure estimates and asthma symptoms was also observed (A: 1.6 (1.2-2.2); B: 1.6 (1.1-2.1)). Overall, the effect of oil spill exposure estimates was more severe on younger children. Oil spill exposure estimates were associated with asthma symptoms in children up to five years after the oil spill.
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Affiliation(s)
- Su Ryeon Noh
- Department of Public Health and Environment, Kosin University, Pusan, Republic of Korea
| | - Jung-Ah Kim
- Department of Environment and Ecology Research, ChungNam Institute, Gongju, Republic of Korea
| | - Hae-Kwan Cheong
- Department of Social and Preventive Medicine, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea.
| | - Mina Ha
- Department of Preventive Medicine, Dankook University College of Medicine, Cheonan, Republic of Korea
| | - Young-Koo Jee
- Department of Internal Medicine, Dankook University College of Medicine, Cheonan, Republic of Korea
| | | | - Kyung-Hwa Choi
- Taean Environmental Health Center, Taean, Republic of Korea
| | - Ho Kim
- Department of Public Health, Seoul National University Graduate School of Public Health, Seoul, Republic of Korea
| | - Sung-Il Cho
- Department of Public Health, Seoul National University Graduate School of Public Health, Seoul, Republic of Korea
| | - Kyungho Choi
- Department of Environmental Health, Seoul National University Graduate School of Public Health, Seoul, Republic of Korea
| | - Domyung Paek
- Department of Environmental Health, Seoul National University Graduate School of Public Health, Seoul, Republic of Korea
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20
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Rychlik KA, Sillé FCM. Environmental exposures during pregnancy: Mechanistic effects on immunity. Birth Defects Res 2019; 111:178-196. [PMID: 30708400 DOI: 10.1002/bdr2.1469] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Accepted: 01/16/2019] [Indexed: 12/21/2022]
Abstract
In human studies, it is well established that exposures during embryonic and fetal development periods can influence immune health. Coupled with genetic predisposition, these exposures can alter lifetime chronic and infectious disease trajectory, and, ultimately, life expectancy. Fortunately, as research advances, mechanisms governing long-term effects of prenatal exposures are coming to light and providing the opportunity for intervention and risk reduction. For instance, human association studies have provided a foundation for the association of prenatal exposure to particulate matter with early immunosuppression and later allergic disease in the offspring. Only recently, the mechanisms mediating this response have been revealed and there is much we have yet to discover. Although cellular immune response is understood for many exposure scenarios, molecular pathways are still unidentified. This review will provide commentary and synthesis of the current literature regarding environmental exposures during pregnancy and mechanisms determining immune outcomes. Shared mechanistic features and current gaps in the state of the science are identified and discussed. To such purpose, we address exposures by their immune effect type: immunosuppression, autoimmunity, inflammation and tissue damage, hypersensitivity, and general immunomodulation.
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Affiliation(s)
- Kristal A Rychlik
- Department of Environmental Health and Engineering, The Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland
| | - Fenna C M Sillé
- Department of Environmental Health and Engineering, The Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland
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21
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Tajima H, Tajiki-Nishino R, Watanabe Y, Fukuyama T. Direct activation of aryl hydrocarbon receptor by benzo[a]pyrene elicits T-helper 2-driven proinflammatory responses in a mouse model of allergic dermatitis. J Appl Toxicol 2019; 39:936-944. [PMID: 30748024 DOI: 10.1002/jat.3782] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 01/09/2019] [Accepted: 01/10/2019] [Indexed: 12/12/2022]
Abstract
The aryl hydrocarbon receptor (AhR) is a ligand-dependent transcription factor that binds to various environmental chemicals and contributes to numerous toxicological effects. However, the direct effects of AhR on the development of allergic diseases are not fully understood. The main aim of this study was to elucidate the action of AhR in the development of cutaneous allergies. Initially, the potential for a direct relationship between AhR and the immune cells was investigated in vitro, using murine bone marrow-derived dendritic cells, human epidermal keratinocytes, and the mixed leukocyte reaction assay. Benzo[a]pyrene (BaP) and 6-formylindolo[3,2-b]carbazole were used as selective ligands for the AhR. Pretreatment with BaP and/or 6-formylindolo[3,2-b]carbazole significantly induced cytokine release by activated keratinocytes and T-cell proliferation, whereas interleukin-12 production in bone marrow-derived dendritic cells was reduced by AhR activation. To confirm the in vitro results, in vivo experiments were also performed in T-helper (Th)2-type hapten toluene-2,4-diisocyanate- and Th1-type hapten dinitrochlorobenzene-induced mouse models of allergic dermatitis. Mice were orally administered BaP at 48, 24 and 4 hours before the final allergen challenge. In the Th2 model, ear-swelling response and scratching behavior were promoted by BaP exposure, which supported the observed significant increases in local cytokine secretion. The infiltration of helper T cells, B cells and dendritic cells into the auricular lymph node was significantly enhanced by BaP administration, although Th1-type immune responses were not influenced by AhR activation. Our findings demonstrate that AhR activation directly activates keratinocytes and T cells, which leads to the exacerbation of Th2-type cutaneous allergy.
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Affiliation(s)
- Hitoshi Tajima
- Toxicology Division, Institute of Environmental Toxicology, 4321, Uchimoriya-machi, Joso-shi, Ibaraki, 303-0043, Japan
| | - Risako Tajiki-Nishino
- Toxicology Division, Institute of Environmental Toxicology, 4321, Uchimoriya-machi, Joso-shi, Ibaraki, 303-0043, Japan
| | - Yuko Watanabe
- Toxicology Division, Institute of Environmental Toxicology, 4321, Uchimoriya-machi, Joso-shi, Ibaraki, 303-0043, Japan
| | - Tomoki Fukuyama
- Toxicology Division, Institute of Environmental Toxicology, 4321, Uchimoriya-machi, Joso-shi, Ibaraki, 303-0043, Japan.,Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara-shi, Kanagawa, 252-5201, Japan
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22
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Thomassen MR, Aasmoe L, Bang BE, Braaten T. Lung function and prevalence of respiratory symptoms in Norwegian crab processing workers. Int J Circumpolar Health 2018; 76:1313513. [PMID: 28425826 PMCID: PMC5405446 DOI: 10.1080/22423982.2017.1313513] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Background: Seafood processing workers have an increased risk of developing occupational asthma. This has not been studied among Norwegian crab processing workers, nor has the respiratory health of exposed workers been compared to a control group. Objectives: Assessing the impact of working in the crab processing industry on workers’ respiratory health. Design: A cross-sectional study of the respiratory health in two types of crab processing workers compared to a control group. Methods: The study included 148 king crab (Paralithodes camtschaticus) workers, 70 edible crab (Cancer pagurus) workers and 215 controls. Workers answered a questionnaire and performed spirometry measurements. χ2 and Fishers exact tests were performed on self-reported respiratory symptoms. Regression analyses and t-tests were used to assess lung function values. Results: Self-reported respiratory symptoms were higher among crab processing workers compared to controls, and higher among king crab workers compared to edible crab workers. There was no significant difference between crab processing workers and controls in lung function measurements. Self-reported doctor-diagnosed asthma prevalence was highest in the control group. Conclusions: Increased respiratory symptoms reported by crab processing workers were not reflected in impaired lung function values or asthma diagnose. We suggest a healthy worker effect among crab processing workers in Norway.
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Affiliation(s)
- Marte R Thomassen
- a Department of Occupational and Environmental Medicine , University Hospital North Norway , Tromsø , Norway.,b Faculty of Health Sciences, Department of Community Medicine , UiT The Arctic University of Norway , Tromsø , Norway
| | - Lisbeth Aasmoe
- a Department of Occupational and Environmental Medicine , University Hospital North Norway , Tromsø , Norway.,c Faculty of Health Sciences, Department of Medical Biology , UiT The Arctic University of Norway , Tromsø , Norway
| | - Berit E Bang
- a Department of Occupational and Environmental Medicine , University Hospital North Norway , Tromsø , Norway.,c Faculty of Health Sciences, Department of Medical Biology , UiT The Arctic University of Norway , Tromsø , Norway
| | - Tonje Braaten
- b Faculty of Health Sciences, Department of Community Medicine , UiT The Arctic University of Norway , Tromsø , Norway
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Fernandes SDSC, Andrade CRD, Alvim CG, Camargos PAM, Ibiapina CDC. Epidemiological trends of allergic diseases in adolescents. J Bras Pneumol 2018; 43:368-372. [PMID: 29160383 PMCID: PMC5790655 DOI: 10.1590/s1806-37562016000000255] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2016] [Accepted: 05/04/2017] [Indexed: 01/07/2023] Open
Abstract
Objective: To assess the prevalences of asthma, allergic rhinitis, and allergic rhinoconjunctivitis in adolescents in the city of Belo Horizonte, Brazil, in 2012 by administering the International Study of Asthma and Allergies in Childhood (ISAAC) questionnaire, as well as to compare the observed prevalences with those found in studies performed 10 years earlier and employing the same methodology used here. Methods: This was a cross-sectional study conducted between May and December of 2012 and involving adolescents in the 13- to 14-year age bracket. Participants were randomly selected from among adolescents studying at public schools in Belo Horizonte and completed the ISAAC questionnaire. Proportions were calculated in order to assess the prevalences of asthma, allergic rhinitis, and allergic rhinoconjunctivitis in the sample as a whole, and the chi-square goodness-of-fit test was used in order to compare the prevalences observed in 2012 with those found in 2002. Results: The prevalences of symptoms of asthma, allergic rhinitis, and allergic rhinoconjunctivitis in 2012 were 19.8%, 35.3%, and 16.3%, respectively, being significantly higher than those found in 2002 (asthma, p = 0.006; allergic rhinitis, p < 0.01; and allergic rhinoconjunctivitis, p = 0.002). Conclusions: The prevalences of asthma, allergic rhinitis, and allergic rhinoconjunctivitis among adolescents in 2012 were found to be high, having increased in comparison with those found 10 years earlier, despite efforts in prevention, diagnosis, and treatment.
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Affiliation(s)
| | - Cláudia Ribeiro de Andrade
- . Departamento de Pediatria, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte (MG) Brasil
| | - Cristina Gonçalves Alvim
- . Departamento de Pediatria, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte (MG) Brasil
| | | | - Cássio da Cunha Ibiapina
- . Departamento de Pediatria, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte (MG) Brasil
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Meldrum K, Guo C, Marczylo EL, Gant TW, Smith R, Leonard MO. Mechanistic insight into the impact of nanomaterials on asthma and allergic airway disease. Part Fibre Toxicol 2017; 14:45. [PMID: 29157272 PMCID: PMC5697410 DOI: 10.1186/s12989-017-0228-y] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 11/10/2017] [Indexed: 01/02/2023] Open
Abstract
Asthma is a chronic respiratory disease known for its high susceptibility to environmental exposure. Inadvertent inhalation of engineered or incidental nanomaterials is a concern for human health, particularly for those with underlying disease susceptibility. In this review we provide a comprehensive analysis of those studies focussed on safety assessment of different nanomaterials and their unique characteristics on asthma and allergic airway disease. These include in vivo and in vitro approaches as well as human and population studies. The weight of evidence presented supports a modifying role for nanomaterial exposure on established asthma as well as the development of the condition. Due to the variability in modelling approaches, nanomaterial characterisation and endpoints used for assessment in these studies, there is insufficient information for how one may assign relative hazard potential to individual nanoscale properties. New developments including the adoption of standardised models and focussed in vitro and in silico approaches have the potential to more reliably identify properties of concern through comparative analysis across robust and select testing systems. Importantly, key to refinement and choice of the most appropriate testing systems is a more complete understanding of how these materials may influence disease at the cellular and molecular level. Detailed mechanistic insight also brings with it opportunities to build important population and exposure susceptibilities into models. Ultimately, such approaches have the potential to more clearly extrapolate relevant toxicological information, which can be used to improve nanomaterial safety assessment for human disease susceptibility.
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Affiliation(s)
- Kirsty Meldrum
- Toxicology Department, Centre for Radiation, Chemical and Environmental Hazards, Public Health England, Chilton, Harwell Campus, OX11 0RQ, UK
| | - Chang Guo
- Toxicology Department, Centre for Radiation, Chemical and Environmental Hazards, Public Health England, Chilton, Harwell Campus, OX11 0RQ, UK
| | - Emma L Marczylo
- Toxicology Department, Centre for Radiation, Chemical and Environmental Hazards, Public Health England, Chilton, Harwell Campus, OX11 0RQ, UK
| | - Timothy W Gant
- Toxicology Department, Centre for Radiation, Chemical and Environmental Hazards, Public Health England, Chilton, Harwell Campus, OX11 0RQ, UK
| | - Rachel Smith
- Toxicology Department, Centre for Radiation, Chemical and Environmental Hazards, Public Health England, Chilton, Harwell Campus, OX11 0RQ, UK
| | - Martin O Leonard
- Toxicology Department, Centre for Radiation, Chemical and Environmental Hazards, Public Health England, Chilton, Harwell Campus, OX11 0RQ, UK.
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Luo G, Nkoy FL, Stone BL, Schmick D, Johnson MD. A systematic review of predictive models for asthma development in children. BMC Med Inform Decis Mak 2015; 15:99. [PMID: 26615519 PMCID: PMC4662818 DOI: 10.1186/s12911-015-0224-9] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Accepted: 11/26/2015] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Asthma is the most common pediatric chronic disease affecting 9.6 % of American children. Delay in asthma diagnosis is prevalent, resulting in suboptimal asthma management. To help avoid delay in asthma diagnosis and advance asthma prevention research, researchers have proposed various models to predict asthma development in children. This paper reviews these models. METHODS A systematic review was conducted through searching in PubMed, EMBASE, CINAHL, Scopus, the Cochrane Library, the ACM Digital Library, IEEE Xplore, and OpenGrey up to June 3, 2015. The literature on predictive models for asthma development in children was retrieved, with search results limited to human subjects and children (birth to 18 years). Two independent reviewers screened the literature, performed data extraction, and assessed article quality. RESULTS The literature search returned 13,101 references in total. After manual review, 32 of these references were determined to be relevant and are discussed in the paper. We identify several limitations of existing predictive models for asthma development in children, and provide preliminary thoughts on how to address these limitations. CONCLUSIONS Existing predictive models for asthma development in children have inadequate accuracy. Efforts to improve these models' performance are needed, but are limited by a lack of a gold standard for asthma development in children.
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Affiliation(s)
- Gang Luo
- Department of Biomedical Informatics, University of Utah, Suite 140, 421 Wakara Way, Salt Lake City, UT 84108 USA
| | - Flory L. Nkoy
- Department of Pediatrics, University of Utah, 100 N Mario Capecchi Drive, Salt Lake City, UT 84113 USA
| | - Bryan L. Stone
- Department of Pediatrics, University of Utah, 100 N Mario Capecchi Drive, Salt Lake City, UT 84113 USA
| | - Darell Schmick
- Spencer S. Eccles Health Sciences Library, 10 N 1900 E, Salt Lake City, UT 84112 USA
| | - Michael D. Johnson
- Department of Pediatrics, University of Utah, 100 N Mario Capecchi Drive, Salt Lake City, UT 84113 USA
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26
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Whole-Body In Vivo Monitoring of Inflammatory Diseases Exploiting Human Interleukin 6-Luciferase Transgenic Mice. Mol Cell Biol 2015; 35:3590-601. [PMID: 26283726 DOI: 10.1128/mcb.00506-15] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2015] [Accepted: 08/05/2015] [Indexed: 11/20/2022] Open
Abstract
Chronic inflammation underlies the pathological progression of various diseases, and thus many efforts have been made to quantitatively evaluate the inflammatory status of the diseases. In this study, we generated a highly sensitive inflammation-monitoring mouse system using a bacterial artificial chromosome (BAC) clone containing extended flanking sequences of the human interleukin 6 gene (hIL6) locus, in which the luciferase (Luc) reporter gene is integrated (hIL6-BAC-Luc). We successfully monitored lipopolysaccharide-induced systemic inflammation in various tissues of the hIL6-BAC-Luc mice using an in vivo bioluminescence imaging system. When two chronic inflammatory disease models, i.e., a genetic model of atopic dermatitis and a model of experimental autoimmune encephalomyelitis (EAE), were applied to the hIL6-BAC-Luc mice, luciferase bioluminescence was specifically detected in the atopic skin lesion and central nervous system, respectively. Moreover, the Luc activities correlated well with the disease severity. Nrf2 is a master transcription factor that regulates antioxidative and detoxification enzyme genes. Upon EAE induction, the Nrf2-deficient mice crossed with the hIL6-BAC-Luc mice exhibited enhanced neurological symptoms concomitantly with robust luciferase luminescence in the neuronal tissue. Thus, whole-body in vivo monitoring using the hIL6-BAC-Luc transgenic system (WIM-6 system) provides a new and powerful diagnostic tool for real-time in vivo monitoring of inflammatory status in multiple different disease models.
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27
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Katebi R, Williams G, Bourke M, Harrison A, Verma A. What factors are associated with the prevalence of atopic symptoms amongst adolescents in Greater Manchester? Eur J Public Health 2015; 28:576-581. [PMID: 26268627 DOI: 10.1093/eurpub/ckv139] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
INTRODUCTION Atopy commonly manifests itself as atopic diseases (ADs), namely asthma, eczema and hay fever. The prevalence of AD is rising worldwide, and it is widely accepted as a major public health issue, due to the significant burden of AD on health care systems. METHOD Data were obtained from the youth survey of the European Urban Health Indicator System 2 project. The study participants were students aged 14-16 years from Greater Manchester. The main outcomes measured were the prevalence of atopic symptoms and the factors associated with the development of atopy. RESULTS Of the sample studied, 70% reported having had an AD during their lifetime. The lifetime prevalence of ever having asthma, eczema or hay fever was 33.4%, 28.1% and 49.0%, respectively. Gender, family affluence, body mass index, diet, smoking and worrying were all significantly associated with atopic symptoms. Smoking was the only variable to be significantly associated with all three ADs. Season of birth and pollution were not shown to be associated with atopic symptoms. CONCLUSION This study demonstrates that the prevalence of AD in Greater Manchester was high amongst adolescents. Several environmental, demographic and social factors were found to be significantly associated with the development of atopic symptoms. This study provides a baseline for future studies to further investigate the factors that are associated with AD and allow for the implementation of preventative public health policy.
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Affiliation(s)
- Raha Katebi
- Manchester Urban Collaboration on Health, Centre for Epidemiology, Institute for Population Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
| | - Greg Williams
- Manchester Urban Collaboration on Health, Centre for Epidemiology, Institute for Population Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
| | - Michael Bourke
- Manchester Urban Collaboration on Health, Centre for Epidemiology, Institute for Population Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
| | - Annie Harrison
- Manchester Urban Collaboration on Health, Centre for Epidemiology, Institute for Population Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
| | - Arpana Verma
- Manchester Urban Collaboration on Health, Centre for Epidemiology, Institute for Population Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
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28
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D'Amato G, Holgate ST, Pawankar R, Ledford DK, Cecchi L, Al-Ahmad M, Al-Enezi F, Al-Muhsen S, Ansotegui I, Baena-Cagnani CE, Baker DJ, Bayram H, Bergmann KC, Boulet LP, Buters JTM, D'Amato M, Dorsano S, Douwes J, Finlay SE, Garrasi D, Gómez M, Haahtela T, Halwani R, Hassani Y, Mahboub B, Marks G, Michelozzi P, Montagni M, Nunes C, Oh JJW, Popov TA, Portnoy J, Ridolo E, Rosário N, Rottem M, Sánchez-Borges M, Sibanda E, Sienra-Monge JJ, Vitale C, Annesi-Maesano I. Meteorological conditions, climate change, new emerging factors, and asthma and related allergic disorders. A statement of the World Allergy Organization. World Allergy Organ J 2015; 8:25. [PMID: 26207160 PMCID: PMC4499913 DOI: 10.1186/s40413-015-0073-0] [Citation(s) in RCA: 254] [Impact Index Per Article: 28.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Accepted: 05/29/2015] [Indexed: 01/08/2023] Open
Abstract
The prevalence of allergic airway diseases such as asthma and rhinitis has increased dramatically to epidemic proportions worldwide. Besides air pollution from industry derived emissions and motor vehicles, the rising trend can only be explained by gross changes in the environments where we live. The world economy has been transformed over the last 25 years with developing countries being at the core of these changes. Around the planet, in both developed and developing countries, environments are undergoing profound changes. Many of these changes are considered to have negative effects on respiratory health and to enhance the frequency and severity of respiratory diseases such as asthma in the general population. Increased concentrations of greenhouse gases, and especially carbon dioxide (CO2), in the atmosphere have already warmed the planet substantially, causing more severe and prolonged heat waves, variability in temperature, increased air pollution, forest fires, droughts, and floods – all of which can put the respiratory health of the public at risk. These changes in climate and air quality have a measurable impact not only on the morbidity but also the mortality of patients with asthma and other respiratory diseases. The massive increase in emissions of air pollutants due to economic and industrial growth in the last century has made air quality an environmental problem of the first order in a large number of regions of the world. A body of evidence suggests that major changes to our world are occurring and involve the atmosphere and its associated climate. These changes, including global warming induced by human activity, have an impact on the biosphere, biodiversity, and the human environment. Mitigating this huge health impact and reversing the effects of these changes are major challenges. This statement of the World Allergy Organization (WAO) raises the importance of this health hazard and highlights the facts on climate-related health impacts, including: deaths and acute morbidity due to heat waves and extreme meteorological events; increased frequency of acute cardio-respiratory events due to higher concentrations of ground level ozone; changes in the frequency of respiratory diseases due to trans-boundary particle pollution; altered spatial and temporal distribution of allergens (pollens, molds, and mites); and some infectious disease vectors. According to this report, these impacts will not only affect those with current asthma but also increase the incidence and prevalence of allergic respiratory conditions and of asthma. The effects of climate change on respiratory allergy are still not well defined, and more studies addressing this topic are needed. Global warming is expected to affect the start, duration, and intensity of the pollen season on the one hand, and the rate of asthma exacerbations due to air pollution, respiratory infections, and/or cold air inhalation, and other conditions on the other hand.
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Affiliation(s)
- Gennaro D'Amato
- Department of Respiratory Diseases, Division of Pneumology and Allergology, High Specialty Hospital "A. Cardarelli" Napoli, Italy, University of Naples Medical School, Via Rione Sirignano, 10, 80121 Napoli, Italy
| | - Stephen T Holgate
- Southampton General Hospital, Clinical and Experimental Sciences, University of Southampton, Hampshire, UK
| | - Ruby Pawankar
- Department of Pediatrics, Nippon Medical School, Tokyo, Japan
| | - Dennis K Ledford
- Morsani College of Medicine, University of South Florida, Tampa, Florida
| | - Lorenzo Cecchi
- Interdepartmental Centre of Bioclimatology, University of Florence Allergy and Clinical Immunology Section, Azienda Sanitaria di Prato, Italy
| | - Mona Al-Ahmad
- Department of Allergy, Al-Rashid Center, Ministry of Health, Khobar, Kuwait
| | - Fatma Al-Enezi
- Al-Rashid Allergy and Respiratory Center, Khobar, Kuwait
| | - Saleh Al-Muhsen
- Department of Pediatrics, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Ignacio Ansotegui
- Department of Allergy and Immunology, Hospital Quirón Bizkaia, Erandio, Spain
| | - Carlos E Baena-Cagnani
- Centre for Research in Respiratory Medicine, Faculty of Medicine, Catholic University of Córdoba, Córdoba, Argentina
| | - David J Baker
- Emeritus Consultant Anaesthesiologist, SAMU de Paris, Hôpital Necker - Enfants Malades, Paris, France
| | - Hasan Bayram
- Department of Chest Diseases, Respiratory Research Laboratory, Allergy Division, School of Medicine, University of Gaziantep, Şehitkamil/Gaziantep, 27310 Turkey
| | | | - Louis-Philippe Boulet
- Quebec Heart and Lung Institute, Laval University, 2725 chemin Sainte-Foy, Quebec City, G1V 4G5 Canada
| | - Jeroen T M Buters
- ZAUM - Center of Allergy and Environment, Helmholtz Zentrum München/Technische Universität München, Munich, Germany
| | - Maria D'Amato
- University of Naples, Institute of Respiratory Diseases, Naples, Italy
| | - Sofia Dorsano
- World Allergy Organization, Milwaukee, Wisconsin United States
| | - Jeroen Douwes
- Centre for Public Health Research, Massey University, Wellington, New Zealand
| | - Sarah Elise Finlay
- Consultant in Emergency Medicine, Chelsea and Westminster Hospital, London, UK
| | - Donata Garrasi
- Development Assistance Committee, Organisation of Economic Cooperation and Development, Paris, France
| | | | - Tari Haahtela
- Skin and Allergy Hospital, Helsinki University Hospital, Helsinki, Finland
| | - Rabih Halwani
- Prince Naif Center for Immunology Research, College of Medicine, King Saud University, P.O.Box 2925, Postal Code 11461 Riyadh, Saudi Arabia
| | - Youssouf Hassani
- Epidemiology of Respiratory and Allergic Disease Department, UMR-S, Institute Pierre Louis of Epidemiology and Public Health, INSERM Medical School Saint-Antoine, UPMC Sorbonne Universités, Paris, France
| | - Basam Mahboub
- University of Sharjah, and, Rashid Hospital DHA, Abu Dhabi, United Arab Emirates
| | - Guy Marks
- South Western Sydney Clinical School, UNSW, Australia and Woolcock Institute of Medical Research, University of Sydney, Sydney, Australia
| | - Paola Michelozzi
- Dipartimento Epidemiologia Regione Lazio, UOC Epidemiologia Ambientale, Roma, Italy
| | - Marcello Montagni
- Department of Clinical and Experimental Medicine, University of Parma, Via Gramsci 14, 43100 Parma, Italy
| | - Carlos Nunes
- Center of Allergy of Algarve, Hospital Particular do Algarve, Particular do Algarve, Brasil
| | - Jay Jae-Won Oh
- Department of Pediatrics, Hanyang University College of Medicine, Seoul, Korea
| | - Todor A Popov
- Clinic of Allergy and Asthma, Medical University in Sofia, Sofia, Bulgaria
| | - Jay Portnoy
- Children's Mercy Hospitals & Clinics, Kansas City, Missouri USA
| | - Erminia Ridolo
- Department of Clinical and Experimental Medicine, University of Parma, Via Gramsci 14, 43100 Parma, Italy
| | - Nelson Rosário
- Division of Pediatric Respiratory Medicine, Hospital de Clínicas, Federal University of Parana, Rua Tte. João Gomes da Silva 226, 80810-100 Curitiba, PR Brazil
| | - Menachem Rottem
- Allergy Asthma and Immunology, Emek Medical Center, Afula, and the Rappaport Faculty of Medicine Technion, Israel Institute of Technology, Haifa, Israel
| | | | - Elopy Sibanda
- Asthma, Allergy and Immune Dysfunction Clinic, Harare, Zimbabwe
| | - Juan José Sienra-Monge
- Allergy and Immunology Department, Hospital Infantil de México Federico Gómez, SSA, México City, Mexico
| | - Carolina Vitale
- University of Naples, Institute of Respiratory Diseases, Naples, Italy
| | - Isabella Annesi-Maesano
- Epidemiology of Respiratory and Allergic Disease Department (EPAR), Institute Pierre Louis of Epidemiology and Public Health, UMR-S 1136, INSERM, Paris, France ; UPMC, Sorbonne Universités, Medical School Saint-Antoine, 803-804-806, 8 etage/Floor 27, Rue Chaligny, CEDEX 12, 75571 Paris, France
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Pyun BY. Natural history and risk factors of atopic dermatitis in children. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2015; 7:101-5. [PMID: 25729616 PMCID: PMC4341330 DOI: 10.4168/aair.2015.7.2.101] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Accepted: 04/21/2014] [Indexed: 01/19/2023]
Abstract
Atopic dermatitis (AD) is one of the most common inflammatory allergic diseases with pruritic skin lesions particularly in infancy. It is considered to be the first step of atopic march and has variable disease courses. Many children with AD may resolve their AD symptoms with increasing age and may develop respiratory allergies such as asthma and rhinoconjunctivitis at certain ages. Natural course of AD has been supported by many cross-sectional and longitudinal studies in many countries. In general, atopic dermatitis tends to be more severe and persistent in young children, particularly if they have some risk factors including genetic factors. It appears that approximately 40%-70% of childhood AD will get resolved when they reach the age of 6-7 years. However, it is also observed that over half of the children with AD developed respiratory allergy during late childhood.
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Affiliation(s)
- Bok Yang Pyun
- Pediatric Allergy and Respiratory Center, Department of Pediatrics, Soonchunhyang University Hospital, Soonchunhyang University College of Medicine, Seoul, Korea
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30
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Li YF, Lin CC, Tai CK. Interaction of intercellular adhesion molecule 1 (ICAM1) polymorphisms and environmental tobacco smoke on childhood asthma. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2015; 11:6504-16. [PMID: 25003170 PMCID: PMC4078592 DOI: 10.3390/ijerph110606504] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Asthma is a chronic disease that is particularly common in children. The association between polymorphisms of the gene encoding intercellular adhesion molecule 1 (ICAM1) and gene-environment interactions with childhood asthma has not been fully investigated. A cross-sectional study was undertaken to investigate these associations among children in Taiwan. The effects of two functional single-nucleotide polymorphisms (SNPs) of ICAM1, rs5491 (K56M) and rs5498 (K469E), and exposure to environmental tobacco smoke (ETS) were studied. Two hundred and eighteen asthmatic and 877 nonasthmatic children were recruited from elementary schools. It was found that the genetic effect of each SNP was modified by the other SNP and by exposure to ETS. The risk of asthma was higher for children carrying the rs5491 AT or TT genotypes and the rs5498 GG genotype (odds ratio = 1.68, 95% confidence interval 1.09–2.59) than for those with the rs5491 AA and rs5498 AA or AG genotypes (the reference group). The risk for the other two combinations of genotypes did not differ significantly from that of the reference group (p of interaction = 0.0063). The two studied ICAM1 SNPs were associated with childhood asthma among children exposed to ETS, but not among those without ETS exposure (p of interaction = 0.05 and 0.01 for rs5491 and rs5498, respectively). Both ICAM1 and ETS, and interactions between these two factors are likely to be involved in the development of asthma in childhood.
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Affiliation(s)
- Yu-Fen Li
- Institute of Biostatistics, China Medical University, 91 Hsieh-Shih Rd., Taichung 404, Taiwan; E-Mail:
| | - Che-Chen Lin
- Department of Public Health, China Medical University, 91 Hsieh-Shih Rd., Taichung 404, Taiwan; E-Mail:
| | - Chien-Kuo Tai
- Department of Life Science, National Chung Cheng University, 168 University Rd., Min-Hsiung Township, Chia-Yi County 621, Taiwan
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +886-5-272-0411 (ext. 66508); Fax: +886-5-272-2871
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Xu XF, Li YJ, Sheng YJ, Liu JL, Tang LF, Chen ZM. Effect of low birth weight on childhood asthma: a meta-analysis. BMC Pediatr 2014; 14:275. [PMID: 25339063 PMCID: PMC4288645 DOI: 10.1186/1471-2431-14-275] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Accepted: 10/09/2014] [Indexed: 01/18/2023] Open
Abstract
Background Low birth weight is strongly correlated with an increased risk of adult diseases. Additionally, low birth weight might be a risk factor for asthma later in life. Methods A systematic literature search of the PubMed database from 1966 to November 2013 was conducted. The criteria for inclusion of papers were as follows: case–control or cohort studies; the odds ratio (OR) or risk ratio (RR) estimates with the corresponding 95% confidence intervals (CIs) were presented, or there were sufficient data for calculation; and studies were published in English up to October 2013. Random-effect and fixed-effect meta-analyses, meta-regression, and cumulative meta-analysis were conducted. Results Thirteen cohort studies and 1,105,703 subjects were included. The overall pooled RRs (95% CIs) of asthma risk for low birth weight were 1.162 (fixed-effects model, 95% CI, 1.128–1.197) and 1.152 (random-effects model, 95% CI, 1.082–1.222). In stratified analyses, the effect of low birth weight on childhood asthma was strong, particularly in studies conducted in Europe, those with a small sample size, and those published recently. A meta-regression analysis did not find significant determinants. Conclusions This meta-analysis shows that low birth weight significantly increases the risk of childhood asthma.
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Affiliation(s)
| | | | | | | | | | - Zhi-Min Chen
- Department of Pulmonology, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China.
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32
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A systematic review of predictive modeling for bronchiolitis. Int J Med Inform 2014; 83:691-714. [PMID: 25106933 DOI: 10.1016/j.ijmedinf.2014.07.005] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Revised: 06/20/2014] [Accepted: 07/16/2014] [Indexed: 12/14/2022]
Abstract
PURPOSE Bronchiolitis is the most common cause of illness leading to hospitalization in young children. At present, many bronchiolitis management decisions are made subjectively, leading to significant practice variation among hospitals and physicians caring for children with bronchiolitis. To standardize care for bronchiolitis, researchers have proposed various models to predict the disease course to help determine a proper management plan. This paper reviews the existing state of the art of predictive modeling for bronchiolitis. Predictive modeling for respiratory syncytial virus (RSV) infection is covered whenever appropriate, as RSV accounts for about 70% of bronchiolitis cases. METHODS A systematic review was conducted through a PubMed search up to April 25, 2014. The literature on predictive modeling for bronchiolitis was retrieved using a comprehensive search query, which was developed through an iterative process. Search results were limited to human subjects, the English language, and children (birth to 18 years). RESULTS The literature search returned 2312 references in total. After manual review, 168 of these references were determined to be relevant and are discussed in this paper. We identify several limitations and open problems in predictive modeling for bronchiolitis, and provide some preliminary thoughts on how to address them, with the hope to stimulate future research in this domain. CONCLUSIONS Many problems remain open in predictive modeling for bronchiolitis. Future studies will need to address them to achieve optimal predictive models.
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33
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Chae Y, Hahm MI, Ahn K, Kim J, Kim WK, Lee SY, Park YM, Han MY, Lee KJ, Kwon HJ. Indoor environmental factors associated with wheezing illness and asthma in South Korean children: phase III of the International Study of Asthma and Allergies in Childhood. J Asthma 2014; 51:943-9. [PMID: 24986252 DOI: 10.3109/02770903.2014.930879] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND The relationship between exposure to indoor environmental pollutants and incidence of asthma and wheezing illness in children is unclear. This study aimed to clarify this relationship by identifying the risk factors associated with these conditions in South Korean children aged 6-7 years. METHODS The parents or guardians of 3810 children aged 6-7 years who had participated in the International Study of Asthma and Allergies in Childhood and met the study criteria completed validated questionnaires regarding their children's asthma and wheezing illness, risk factors and exposure to indoor pollutants. The data were subjected to chi-square and multivariate logistic regression analysis to identify the factors significantly associated with asthma and wheezing illness. RESULTS Parental history of allergic disease (odds ratio [OR]: 1.729; 95% confidence interval [CI]: 1.447-2.066), living on the basement or semi-basement floor (OR: 1.891; 95% CI: 1.194-2.996) and living in housing that had been remodeled within the last 12 months (OR: 1.376; 95% CI: 1.101-1.720) were found to be significantly associated with wheezing illness. Parental history of allergic disease (OR: 2.189; 95% CI: 1.483-3.231), male sex (OR: 1.971; 95% CI: 1.369-2.838) and positive skin prick test (SPT) result (OR: 1.583; 95% CI: 1.804-3.698) were found to be significantly associated with current asthma. CONCLUSIONS Although the risk factors for current asthma appear to be more related to the non-modifiable risk factors like sex, parental history of allergic diseases, SPT, the two groups are associated with exposure to modifiable indoor environmental factors.
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Affiliation(s)
- Yoomi Chae
- Department of Occupational and Environmental Medicine, College of Medicine, Dankook University Hospital , Chenonan , Korea
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Kontakioti E, Domvri K, Papakosta D, Daniilidis M. HLA and asthma phenotypes/endotypes: a review. Hum Immunol 2014; 75:930-9. [PMID: 24994462 DOI: 10.1016/j.humimm.2014.06.022] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Revised: 03/11/2014] [Accepted: 06/23/2014] [Indexed: 11/25/2022]
Abstract
Asthma is a complex chronic inflammatory disease of the airways caused by the interaction of genetic susceptibility with environmental influences. Genome-wide association studies (GWAS) represent the most powerful approach for asthma, that have identified several genes (e.g., IL18R1, IL33, SMAD3, ORMDL3, HLA-DQ and IL2RB loci). HLA super-locus is a genomic region in the chromosomal position 6p21. Since no gene can be considered as an asthma gene, able to reflect the complex etiology and the heterogeneity of the disease the terms 'phenotype' and more recently 'endotype' have been used. This review, according to literature availability, focuses on the relationship between human leukocyte antigens (HLA) region specifically the HLA class II genes and different asthma phenotypes/endotypes, such as allergic asthma/Th2 associated, occupational and aspirin-sensitive asthma. The most common HLA haplotypes in the different asthma phenotypes are HLA-DRB1in allergic asthma, HLA-DQB1in occupational asthma and HLA-DPB1 in aspirin-sensitive asthma. However, it is difficult to study the role of class II genes in vivo because of the heterogeneity of human population, the complexity of MHC, and the strong linkage disequilibrium among different class II genes. Despite the variation and the inconsistency of the HLA haplotypes and alleles in different types of asthma, the association between HLA class II genes and asthma has been demonstrated in the majority of studies.
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Affiliation(s)
- Eirini Kontakioti
- Asthma Clinic, Pulmonary Department, Aristotle University of Thessaloniki, George Papanikolaou Hospital, Exochi, Thessaloniki, Greece
| | - Kalliopi Domvri
- Asthma Clinic, Pulmonary Department, Aristotle University of Thessaloniki, George Papanikolaou Hospital, Exochi, Thessaloniki, Greece
| | - Despina Papakosta
- Asthma Clinic, Pulmonary Department, Aristotle University of Thessaloniki, George Papanikolaou Hospital, Exochi, Thessaloniki, Greece.
| | - Michail Daniilidis
- Immunology Research Laboratory, 1st Department of Internal Medicine, Aristotle University of Thessaloniki, AHEPA Hospital, Thessaloniki, Greece
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Occupational asthma caused by samba (Triplochiton scleroxylon) wood dust in a professional maker of wooden models of airplanes: a case study. Int J Occup Med Environ Health 2014; 27:512-9. [PMID: 24840887 DOI: 10.2478/s13382-014-0253-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Accepted: 02/12/2014] [Indexed: 11/21/2022] Open
Abstract
OBJECTIVES Wood dust is a known occupational allergen that may induce, in exposed workers, respiratory diseases including asthma and allergic rhinitis. Samba (obeche, Triplochiton scleroxylon) is a tropical tree, which grows in West Africa, therefore, Polish workers are rarely exposed to it. This paper describes a case of occupational asthma caused by samba wood dust. MATERIAL AND METHODS The patient with suspicion of occupational asthma due to wood dust was examined at the Department of Occupational Diseases and Clinical Toxicology in the Nofer Institute of Occupational Medicine. Clinical evaluation included: analysis of occupational history, skin prick tests (SPT) to common and occupational allergens, determination of serum specific IgE to occupational allergens, serial spirometry measurements, metacholine challenge test and specific inhalation challenge test with samba dust RESULTS SPT and specific serum IgE assessment revealed sensitization to common and occupational allergens including samba. Spirometry measurements showed mild obstruction. Metacholine challenge test revealed a high level of bronchial hyperactivity. Specific inhalation challenge test was positive and cellular changes in nasal lavage and induced sputum confirmed allergic reaction to samba. CONCLUSIONS IgE mediated allergy to samba wood dust was confirmed. This case report presents the first documented occupational asthma and rhinitis due to samba wood dust in wooden airplanes model maker in Poland.
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Lima WL, Lima EVNCL, Costa MDRDSR, Santos AMD, Silva AAMD, Costa ES. [Asthma and associated factors in students 13 and 14 years of age in São Luís, Maranhão State, Brazil]. CAD SAUDE PUBLICA 2012; 28:1046-56. [PMID: 22666809 DOI: 10.1590/s0102-311x2012000600004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2011] [Accepted: 03/19/2012] [Indexed: 11/22/2022] Open
Abstract
The aim of this study was to estimate the prevalence of asthma and associated factors among students 13 and 14 years of age in São Luís, Maranhão State, Brazil. A cross-sectional study was conducted using the questionnaire developed by ISAAC (International Study of Asthma and Allergies in Childhood) and an additional questionnaire from July 2008 to May 2009, including 3,069 adolescents. Asthma prevalence (wheezing in the previous 12 months) was 12.7%, lifetime prevalence was 32.4%, 3.9% reported difficulty speaking due to wheezing, and 9.8% reported wheezing after exercise. In the multivariate analysis, factors associated with increased asthma prevalence were family history of asthma, respiratory infection and wheezing in early life, eczema, allergic rhinitis, and passive smoking. Asthma prevalence was lower than for Brazil as a whole. Factors most strongly associated with asthma prevalence in these adolescents were family history of asthma (PR = 3.86), wheezing in early childhood (PR = 4.58), and allergic rhinitis (PR = 3.21).
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Choi WJ, Um IY, Hong S, Yum HY, Kim H, Kwon H. Association between Household Income and Asthma Symptoms among Elementary School Children in Seoul. ENVIRONMENTAL HEALTH AND TOXICOLOGY 2012; 27:e2012020. [PMID: 23256089 PMCID: PMC3524452 DOI: 10.5620/eht.2012.27.e2012020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Accepted: 10/30/2012] [Indexed: 06/01/2023]
Abstract
OBJECTIVES This study examined the association between socioeconomic factors and asthma symptoms. METHODS A total of 6,919 elementary school children in Seoul were enrolled in the study. Data were obtained from a web-based questionnaire survey. The questionnaire was based on the International Study of Asthma and Allergies in Childhood core module. The prevalence of wheeze in the past 12 months and severe asthma symptoms were obtained. The potential risk factors for asthma symptoms included household income and the number of siblings. A multiple logistic regression analysis was used to calculate the odds ratios (OR) and 95% confidence interval (CI) for the risk factors of asthma symptoms. RESULTS The prevalence of current wheeze (wheeze in the past 12 months) was 5.2%. Household income and asthma symptoms were inversely associated after adjusting for other potential risk factors (p for trend=0.03). This association was modified by the number of siblings. With two or more siblings, the effect of household income on asthma symptoms was not significant. However, low household income was still a significant variable for patients with fewer than two siblings (OR 1.41; 95% CI, 1.09-1.81). CONCLUSIONS It appears that childhood asthma disparity is dependent on household income. Therefore, policies to improve childhood health inequities should be emphasized.
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Affiliation(s)
- Won-Jun Choi
- Department of Occupational and Environmental Medicine, Gachon University Gil Medical Center, Incheon, Korea
| | - In-Yong Um
- Department of Occupational and Environmental Medicine, Gachon University Gil Medical Center, Incheon, Korea
| | - Soyoung Hong
- Atopy Research Institute, Seoul Medical Center, Seoul, Korea
| | - Hye Yung Yum
- Atopy Asthma Center, Seoul Medical Center, Seoul, Korea
| | - Hyunjung Kim
- Atopy Research Institute, Seoul Medical Center, Seoul, Korea
- Atopy Asthma Center, Seoul Medical Center, Seoul, Korea
| | - Hojang Kwon
- Atopy Research Institute, Seoul Medical Center, Seoul, Korea
- Department of Preventive Medicine, Dankook University College of Medicine, Cheonan, Korea
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Jucá SCBMP, Takano OA, Moraes LSL, Guimarães LV. [Asthma prevalence and risk factors in adolescents 13 to 14 years of age in Cuiabá, Mato Grosso State, Brazil]. CAD SAUDE PUBLICA 2012; 28:689-97. [PMID: 22488314 DOI: 10.1590/s0102-311x2012000400008] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2011] [Accepted: 12/15/2011] [Indexed: 11/22/2022] Open
Abstract
The objective of this study was to estimate the prevalence of active asthma and identify associated risk factors in adolescents 13 to 14 years of age in Cuiabá, Mato Grosso State, Brazil. A cross-sectional population-based and a subsequently a nested case-control study was conducted in 2008 using the protocol of the International Study of Asthma and Allergies in Childhood (ISAAC). Risk factor analysis used the chi-square test, Fisher's exact test, and binary logistic regression. Variables with p < 0.20 in the bivariate analysis entered the logistic regression model, with six variables remaining in the final model (p < 0.05). Prevalence of active asthma was 19.1%. Risk factors for active asthma (p = 0.01) were: smoking during pregnancy, exclusive breastfeeding < 6 months, family income < 3 minimum wages, female gender, pets currently in the home, and absence of fish in the diet. Prevalence of active asthma was high, but with a significant reduction compared to 1998.
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Kim H, Tse K, Levin L, Bernstein D, Reponen T, LeMasters G, Lummus Z, Horner AA. House dust bioactivities predict skin prick test reactivity for children with high risk of allergy. J Allergy Clin Immunol 2012; 129:1529-37.e2. [PMID: 22385634 DOI: 10.1016/j.jaci.2012.01.051] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2011] [Revised: 01/12/2012] [Accepted: 01/13/2012] [Indexed: 11/26/2022]
Abstract
BACKGROUND Although evidence suggests that ambient exposures to endotoxin and other immunostimulants during early life influence allergic risk, efforts to understand this host-environment relationship have been hampered by a paucity of relevant assays. OBJECTIVES These investigations determined whether parameters of house dust extract (HDE) bioactivity were predictive of allergen skin prick test (SPT) reactivity for infants at high risk of allergy participating in the Cincinnati Childhood Allergy and Air Pollution Study (CCAAPS). METHODS We conducted a nested case-control study, selecting 99 CCAAPS children who had positive SPT results to at least 1 aeroallergen at age 3 years and 101 subjects with negative SPT results. HDEs were prepared from dust samples collected from the subjects' homes at age 1 year. Murine splenocytes and bone marrow-derived dendritic cells were incubated with HDEs, and supernatant cytokine concentrations were determined by means of ELISA. Alternatively, bone marrow-derived dendritic cells were preincubated with HDEs, and then LPS-induced IL-6 responses were assessed. HDE endotoxin levels were determined by using the limulus amebocyte lysate assay. RESULTS HDEs derived from the homes of children with positive (cases) and negative (control subjects) SPT results had similar bioactivities. However, when cases were considered in isolation, HDEs with higher levels of bioactivity were significantly associated with children who had lower numbers of positive SPT results. Analogous statistical analyses did not identify any association between HDE endotoxin levels and the aeroallergen sensitization profiles of children included in this study. CONCLUSION HDE immunostimulatory activities predicted the aeroallergen sensitization status of CCAAPS subjects better than HDE endotoxin levels. These results provide the first published evidence that HDE bioassays have clinical relevance in predicting atopic risk.
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Affiliation(s)
- Haejin Kim
- Department of Medicine, University of Cincinnati, Cincinnati, Ohio, USA
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Kinchoku VM, Oliveira IS, Watanabe LA, Fomin ÂBF, Castro APBM, Jacob CMA, Pastorino AC. Fatores associados ao controle da asma em pacientes pediátricos em centro de referência. REVISTA PAULISTA DE PEDIATRIA 2011. [DOI: 10.1590/s0103-05822011000400019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/26/2023]
Abstract
OBJETIVO: Descrever os dados epidemiológicos, clínicos e os fatores associados ao controle da asma em pacientes asmáticos seguidos em um ambulatório pediátrico especializado. MÉTODOS: Estudo transversal de pacientes asmáticos ambulatoriais, para os quais eram fornecidas medicações profiláticas. A classificação da asma, as etapa de tratamento e a avaliação do controle seguiram a IV Diretrizes Brasileiras para o Manejo da Asma, de 2006. Os fatores avaliados foram: outras alergias, obesidade, imunodeficiências, refluxo gastresofágico e sensibilização alérgica, sendo comparados pacientes com asma controlada ou não com relação à etapa do tratamento, à obesidade e à sensibilização alérgica. RESULTADOS: Foram analisados 300 pacientes com asma (1,38M:1F), com mediana de idade de 10,8 anos, e de início dos sintomas de 1,0 ano. A atopia estava presente em 78% dos pais e/ou irmãos. Antecedentes pessoais de doenças alérgicas ocorreram em 292 pacientes (96% rinite, 27% dermatite atópica, 18% conjuntivite alérgica, 6% alergia alimentar). Foram diagnosticados sete casos de deficiência de IgA (DIgA) e quatro de IgG2; obesidade em 37/253 (15%), sendo que sobrepeso e obesidade estiveram associados à falta de controle (p=0,023). Em 118 pacientes com multissensibilização, predominaram casos não controlados (22 (19%) casos; p=0,049; OR 1,9; IC95% 1,03-3,50). Entre os 180 casos (60%) em tratamento nas etapas 3 e 4, 122 (45%) estavam controlados e 112 (41%) parcialmente controlados. CONCLUSÕES: A rinite foi a alergia mais associada à asma e a prevalência de DIgA foi 20 vezes maior do que na população geral. O controle parcial ou total dos sintomas da asma foi obtido em 85% dos casos. Obesidade/sobrepeso e multissensibilização foram associadas à falta de controle da asma.
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Wang QP, Wu KM, Li ZQ, Xue F, Chen W, Ji H, Wang BL. Association between maternal allergic rhinitis and asthma on the prevalence of atopic disease in offspring. Int Arch Allergy Immunol 2011; 157:379-86. [PMID: 22123070 DOI: 10.1159/000328789] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2010] [Accepted: 04/20/2011] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Asthma is a common co-morbidity of allergic rhinitis (AR). The prevalence of these two allergic diseases has increased in China and has been shown to cluster in families independently. This study evaluated the association between maternal AR (presenting with or without asthma) and the allergic conditions in offspring. METHODS Women (n = 592) diagnosed with AR were recruited for this study; 379 patients presented with AR and 213 presented with both AR and asthma. Total serum IgE levels and nasal eosinophil counts were analyzed and correlated with disease presentation. RESULTS The prevalence of allergic conditions in offspring of mothers diagnosed with AR and asthma was significantly higher than the prevalence observed in children born to mothers presenting with AR only. Maternal total serum IgE and eosinophil counts were predictive of atopy in offspring. Children born to mothers presenting with persistent moderate-to-severe AR had the highest risk of developing atopic conditions (OR 6.26, 95% CI 3.26-12.02). Maternal age of 25-30 years at delivery was also associated with a higher risk for the allergic disease in offspring compared to maternal age of 36-40 (OR 2.13, 95% CI 1.31-3.47). CONCLUSIONS The severity of maternal AR, asthma co-morbidity, elevated serum IgE levels and nasal eosinophilia were all associated with an increased risk of offspring developing allergic conditions. Children born to older mothers were protected against developing atopic disease.
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Affiliation(s)
- Qiu-Ping Wang
- Department of Otolaryngology-Head and Neck Surgery, Jinling Hospital, Nanjing, PR China
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Ming L, Wen Q, Qiao HL, Dong ZM. Interleukin-18 and IL18 -607A/C and -137G/C gene polymorphisms in patients with penicillin allergy. J Int Med Res 2011; 39:388-98. [PMID: 21672342 DOI: 10.1177/147323001103900206] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
This study investigated the association between polymorphisms (-607A/C and -137G/C) in the promoter region of the IL18 gene (which encodes interleukin [IL]-18) and serum levels of IL-18, using standard genotyping techniques (sequence specific primer-polymerase chain reaction) and an enzyme-linked immunosorbent assay, respectively, in patients allergic to penicillin. A higher frequency of A alleles and the AA genotype was found at position -607A/C in patients allergic to penicillin than in control subjects. For the -137G/C position, the C allele was more frequent in patients allergic to penicillin than in control subjects. Haplotype analysis showed that the -607A/-137C haplotype was more frequent in patients allergic to penicillin than in control subjects. The patients had a significantly higher serum IL-18 level than the control subjects. In conclusion, IL18 -607A/C and -137G/C promoter polymorphisms are associated with susceptibility to penicillin allergy. In particular, the -137G/C position appears to play an important role in IL18 expression.
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Affiliation(s)
- L Ming
- Department of Clinical Pharmacology, School of Medicine, Zhengzhou University, Zhengzhou, Henan, China
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Koster ES, Van der Ent CK, Uiterwaal CSPM, Verheij TJM, Raaijmakers JAM, Maitland-van der Zee AH. Asthma medication use in infancy: determinants related to prescription of drug therapy. Fam Pract 2011; 28:377-84. [PMID: 21292627 DOI: 10.1093/fampra/cmr002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Little is known about factors that determine prescribing of asthma therapy in infancy. OBJECTIVE To describe factors related to the initiation and refill of asthma therapy in infancy. METHODS This study included 1202 infants who participated in a prospective birth cohort study: the 'Wheezing Illnesses Study Leidsche Rijn (WHISTLER)'. Outcomes, asthma therapy initiation and refill, were assessed using prescription data. Logistic regression analysis was used to study determinants of therapy initiation in two groups: total population and infants with a respiratory system symptom diagnosis. In addition, determinants of refilling prescriptions were studied in infants who started therapy in their first year of life. RESULTS Fifteen per cent of all infants started asthma therapy in their first year of life. Respiratory symptoms were an important driver of both initiation and refill of prescriptions. In the total population, therapy initiation was associated with male gender [odds ratio (OR): 1.6, 95% confidence interval (CI): 1.1-2.6], day-care attendance (OR: 1.6, 95% CI: 1.0-2.5) and breastfeeding (OR: 0.6, 95% CI: 0.3-1.0). For infants with a respiratory system symptom diagnosis, day-care attendance was associated with an increased chance of therapy initiation (OR: 5.3, 95% CI: 1.8-16.2) and breastfeeding was associated with a lower chance of starting therapy (OR: 0.4, 95% CI: 0.1-1.1). Dutch children had a higher chance of refilling prescriptions in infancy (OR: 5.3, 95% CI: 1.1-26.8). CONCLUSIONS Apart from other factors involved, the principal reason for initiation and refill of asthma therapy in infancy was the presence of respiratory symptoms. This appeared the only reason to prescribe medication and physicians are not distracted by other factors.
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Affiliation(s)
- Ellen S Koster
- Division of Pharmacoepidemiology and Clinical Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Utrecht
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Jones R, Recer GM, Hwang SA, Lin S. Association between indoor mold and asthma among children in Buffalo, New York. INDOOR AIR 2011; 21:156-164. [PMID: 21204984 DOI: 10.1111/j.1600-0668.2010.00692.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
UNLABELLED Asthma is a leading chronic disease among children and places a significant burden on public health. Exposure to indoor mold has been associated with asthma symptoms. However, many mold assessments have relied on visual or other identification of damp conditions and mold presence, thus have not examined associations with specific fungal genera. The objective of this case-control study was to examine the relationship between airborne mold concentrations and asthma status among children and to identify the contribution from specific mold genera in air. Participants completed a questionnaire of home environmental conditions and underwent indoor air sampling in the home, from which viable and total-count fungal spores were quantified. The most prevalent fungi in the homes were the allergenic molds Cladosporium (98% and 87% of homes from viable and total count samples, respectively) and Penicillium (91% and 73%). There were no significant differences in mean fungal concentrations between the homes of cases and controls, although the observed rate of exposure to several molds was higher among the cases. Among children who lacked a family history of asthma, cases had significantly higher exposures to viable Aspergillus. Measured humidity levels in the home corresponded with some self-reported indicators of mold and dampness. PRACTICAL IMPLICATIONS The results of this study support existing literature that indoor fungal exposures play a role in current asthma status and that some qualitative assessments of mold exposure correspond to fungi present in indoor air.
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Affiliation(s)
- R Jones
- New York State Department of Health, Bureau of Environmental and Occupational Epidemiology, Center for Environmental Health, Troy, NY 12180, USA.
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Siltanen M, Wehkalampi K, Hovi P, Eriksson JG, Strang-Karlsson S, Järvenpää AL, Andersson S, Kajantie E. Preterm birth reduces the incidence of atopy in adulthood. J Allergy Clin Immunol 2011; 127:935-42. [PMID: 21333345 DOI: 10.1016/j.jaci.2010.12.1107] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2010] [Revised: 12/12/2010] [Accepted: 12/16/2010] [Indexed: 11/26/2022]
Abstract
BACKGROUND Immunologic pathways are primed in early life. Preterm birth can influence this process and thereby affect whether a person will have atopy later in life. Previous studies on the effects of preterm birth on atopy in adulthood have been inconclusive and limited to children or subjects born moderately preterm. OBJECTIVE Our aim was to compare the incidence of atopy among young adults who were born preterm and at very low birth weight (≤ 1500 g) with that of term-born young adults (control subjects). METHODS The study comprised 166 adults who were born preterm and at very low birth weight and 172 control subjects, all of whom were from the Helsinki Study of Very Low Birth Weight Adults. We assessed atopic predisposition at ages 18 to 27 years using skin prick tests for 6 common aeroallergens and measurements of serum concentrations of total IgE and 3 types of allergen-specific (cat, birch, and timothy) IgE. We asked the subjects whether they had been given a diagnosis of asthma or allergic rhinitis or had atopic eczema and analyzed data by using logistic or linear regression, adjusting for potential confounding factors. RESULTS The risk for having at least 1 positive reaction on a skin prick test was reduced (adjusted odds ratio, 0.43; 95% CI, 0.23-0.79, P = .007), and the concentration of cat-specific IgE was less (25% less; 95% CI, 43% to 2.3% less; P = .033) in sera from very-low-birth-weight subjects compared with that seen in sera from control subjects. Within the very-low-birth-weight group, those born at an earlier gestational age were less likely to have positive skin prick test reactions (adjusted odds ratio for 1 week, 0.82; 95% CI, 0.68-0.98, P = .029) and less likely to have high levels of allergen-specific IgE. Cumulative incidences of atopic disease were similar between adults of very low birth weight and control subjects. CONCLUSIONS Young adults born prematurely and at very low birth weight have a lower incidence of atopy than adults who were born full term. This finding supports the hypothesis that the risk for atopy is determined during early stages of development.
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Affiliation(s)
- Mirjami Siltanen
- Division of Welfare and Health Promotion, Department of Chronic Disease Prevention, Diabetes Prevention Unit, National Institute for Health and Welfare, Helsinki, Finland
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Kim YH, Urm SH, Kim WK. Prevalence of Allergic Diseases and Risk Factors in Preschool Children, 2009. ACTA ACUST UNITED AC 2011. [DOI: 10.7581/pard.2011.21.3.165] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Young Hui Kim
- Department of Pediatrics, Seoul Paik Hospital, Inje University College of Medicine, Seoul, Korea
| | - Sang-Hwa Urm
- Department of Preventive Medicine, Inje University College of Medicine, Busan, Korea
| | - Woo Kyung Kim
- Department of Pediatrics, Seoul Paik Hospital, Inje University College of Medicine, Seoul, Korea
- Allergy & Respiratory Research Laboratory, Inje University College of Medicine, Seoul, Korea
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Rollinger JM, Schmidtke M. The human rhinovirus: human-pathological impact, mechanisms of antirhinoviral agents, and strategies for their discovery. Med Res Rev 2011; 31:42-92. [PMID: 19714577 PMCID: PMC7168442 DOI: 10.1002/med.20176] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
As the major etiological agent of the common cold, human rhinoviruses (HRV) cause millions of lost working and school days annually. Moreover, clinical studies proved an association between harmless upper respiratory tract infections and more severe diseases e.g. sinusitis, asthma, and chronic obstructive pulmonary disease. Both the medicinal and socio-economic impact of HRV infections and the lack of antiviral drugs substantiate the need for intensive antiviral research. A common structural feature of the approximately 100 HRV serotypes is the icosahedrally shaped capsid formed by 60 identical copies of viral capsid proteins VP1-4. The capsid protects the single-stranded, positive sense RNA genome of about 7,400 bases in length. Both structural as well as nonstructural proteins produced during the viral life cycle have been identified as potential targets for blocking viral replication at the step of attachment, entry, uncoating, RNA and protein synthesis by synthetic or natural compounds. Moreover, interferon and phytoceuticals were shown to protect host cells. Most of the known inhibitors of HRV replication were discovered as a result of empirical or semi-empirical screening in cell culture. Structure-activity relationship studies are used for hit optimization and lead structure discovery. The increasing structural insight and molecular understanding of viral proteins on the one hand and the advent of innovative computer-assisted technologies on the other hand have facilitated a rationalized access for the discovery of small chemical entities with antirhinoviral (anti-HRV) activity. This review will (i) summarize existing structural knowledge about HRV, (ii) focus on mechanisms of anti-HRV agents from synthetic and natural origin, and (iii) demonstrate strategies for efficient lead structure discovery.
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Affiliation(s)
- Judith M Rollinger
- Institute of Pharmacy/Pharmacognosy and Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innrain 52c, A-6020 Innsbruck, Austria.
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Lee HB. Lessons learned from the prevalence of childhood asthma in Korea. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2010; 3:1-2. [PMID: 21217918 PMCID: PMC3005312 DOI: 10.4168/aair.2011.3.1.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/27/2010] [Accepted: 12/03/2010] [Indexed: 11/20/2022]
Affiliation(s)
- Ha-Baik Lee
- Department of Pediatrics, Hanyang University College of Medicine, Seoul, Korea
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Choi H, Shin DW, Kim W, Doh SJ, Lee SH, Noh M. Asian dust storm particles induce a broad toxicological transcriptional program in human epidermal keratinocytes. Toxicol Lett 2010; 200:92-9. [PMID: 21056094 DOI: 10.1016/j.toxlet.2010.10.019] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2010] [Revised: 10/22/2010] [Accepted: 10/27/2010] [Indexed: 12/15/2022]
Abstract
Exposure to airborne dust particles originated from seasonal Asian dust storms in Chinese and Mongolian deserts results in increased incidence of a range of diseases including asthma, contact dermatitis and conjunctivitis. The areas affected by Asian dust particles extend from East China to the west coast of North America. In order to study toxicological mechanisms in human skin, we evaluated the effects of dust particles collected during Asian dust storms (Asian dust particles) on gene expression in human epidermal keratinocytes (HEK). In HEK, exposure to Asian dust particles significantly increased gene expressions of cytochrome P450 1A1 (CYP1A1), CYP1A2, and CYP1B1, which is an indication of aryl hydrocarbon receptor (AHR) activation. In addition, Asian dust particles increased gene transcription of the cytokines IL-6, IL-8, and GM-CSF, which have broad pro-inflammatory and immunomodulatory properties. Asian dust particles significantly up-regulated expression of caspase 14 in HEK, suggesting that Asian dust particles directly affect keratinocyte differentiation. We also demonstrated that protein extract of pollen, a material frequently adsorbed onto Asian dust particles, potentially contributes to the increased transcription of IL-6, CYP1A1, CYP1A2, and CYP1B1. Taken together, these studies suggest that Asian dust particles can exert toxicological effects on human skin through the activation of the cellular detoxification system, the production of pro-inflammatory and immunomodulatory cytokines, and changes in the expression of proteins essential in normal epidermal differentiation.
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Affiliation(s)
- Hyun Choi
- Bioscience Institute, AmorePacific Corporation R&D Center, Yongin, Gyeounggi-do 446-729, Republic of Korea
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