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Chawla H, Anand P, Garg K, Bhagat N, Varmani SG, Bansal T, McBain AJ, Marwah RG. A comprehensive review of microbial contamination in the indoor environment: sources, sampling, health risks, and mitigation strategies. Front Public Health 2023; 11:1285393. [PMID: 38074709 PMCID: PMC10701447 DOI: 10.3389/fpubh.2023.1285393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 10/25/2023] [Indexed: 12/18/2023] Open
Abstract
The quality of the indoor environment significantly impacts human health and productivity, especially given the amount of time individuals spend indoors globally. While chemical pollutants have been a focus of indoor air quality research, microbial contaminants also have a significant bearing on indoor air quality. This review provides a comprehensive overview of microbial contamination in built environments, covering sources, sampling strategies, and analysis methods. Microbial contamination has various origins, including human occupants, pets, and the outdoor environment. Sampling strategies for indoor microbial contamination include air, surface, and dust sampling, and various analysis methods are used to assess microbial diversity and complexity in indoor environments. The review also discusses the health risks associated with microbial contaminants, including bacteria, fungi, and viruses, and their products in indoor air, highlighting the need for evidence-based studies that can relate to specific health conditions. The importance of indoor air quality is emphasized from the perspective of the COVID-19 pandemic. A section of the review highlights the knowledge gap related to microbiological burden in indoor environments in developing countries, using India as a representative example. Finally, potential mitigation strategies to improve microbiological indoor air quality are briefly reviewed.
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Affiliation(s)
- Hitikk Chawla
- Institute for Cell Biology and Neuroscience, Goethe University Frankfurt, Frankfurt, Germany
| | - Purnima Anand
- Department of Microbiology, Bhaskaracharya College of Applied Sciences, University of Delhi, New Delhi, India
| | - Kritika Garg
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, India
| | - Neeru Bhagat
- Department of Microbiology, Bhaskaracharya College of Applied Sciences, University of Delhi, New Delhi, India
| | - Shivani G. Varmani
- Department of Biomedical Science, Bhaskaracharya College of Applied Sciences, University of Delhi, New Delhi, India
| | - Tanu Bansal
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | - Andrew J. McBain
- School of Health Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Ruchi Gulati Marwah
- Department of Microbiology, Bhaskaracharya College of Applied Sciences, University of Delhi, New Delhi, India
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Hong J, Son M, Sin J, Kim H, Chung DK. Nanoparticles of Lactiplantibacillus plantarum K8 Reduce Staphylococcus aureus Respiratory Infection and Tumor Necrosis Factor Alpha- and Interferon Gamma-Induced Lung Inflammation. Nutrients 2023; 15:4728. [PMID: 38004123 PMCID: PMC10675637 DOI: 10.3390/nu15224728] [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: 10/12/2023] [Revised: 10/26/2023] [Accepted: 11/07/2023] [Indexed: 11/26/2023] Open
Abstract
Multiple studies have confirmed that Lactiplantibacillus plantarum has beneficial effects in respiratory diseases, including respiratory tract infections, asthma, and chronic obstructive pulmonary disease. However, the role of L. plantarum lysates in respiratory diseases is unclear. Staphylococcus aureus infects the lungs of mice, recruits immune cells, and induces structural changes in alveoli. Lung diseases can be further aggravated by inflammatory cytokines such as CCL2 and interleukin (IL)-6. In in vivo studies, L. plantarum K8 nanoparticles (K8NPs) restored lung function and prevented lung damage caused by S. aureus infection. They inhibited the S. aureus infection and the infiltration of immune cells and prevented the increase in goblet cell numbers in the lungs of S. aureus-infected mice. K8NPs suppressed the expression of CCL2 and IL-6, which were increased by the combination treatment of tumor necrosis factor alpha and interferon gamma (TI), in a dose-dependent manner. In in vitro studies, the anti-inflammatory effect of K8NPs in TI-treated A549 cells and TI-injected mice occurred through the reduction in activated mitogen-activated protein kinases and nuclear factor kappa-B. These findings suggest that the efficacy of K8NPs in controlling respiratory inflammation and infection can be used to develop functional materials that can prevent or alleviate respiratory diseases.
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Affiliation(s)
- Jonghyo Hong
- Graduate School of Biotechnology, Kyung Hee University, Yongin 17104, Republic of Korea; (J.H.); (M.S.); (J.S.)
| | - Minseong Son
- Graduate School of Biotechnology, Kyung Hee University, Yongin 17104, Republic of Korea; (J.H.); (M.S.); (J.S.)
| | - Jaeeun Sin
- Graduate School of Biotechnology, Kyung Hee University, Yongin 17104, Republic of Korea; (J.H.); (M.S.); (J.S.)
| | - Hangeun Kim
- Research and Development Center, Skin Biotechnology Center Co., Ltd., Yongin 17104, Republic of Korea
| | - Dae-Kyun Chung
- Graduate School of Biotechnology, Kyung Hee University, Yongin 17104, Republic of Korea; (J.H.); (M.S.); (J.S.)
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3
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Pfeiffer S, Swoboda I. Problems Encountered Using Fungal Extracts as Test Solutions for Fungal Allergy Diagnosis. J Fungi (Basel) 2023; 9:957. [PMID: 37888213 PMCID: PMC10607634 DOI: 10.3390/jof9100957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 09/15/2023] [Accepted: 09/18/2023] [Indexed: 10/28/2023] Open
Abstract
Fungal allergy is a worldwide public health burden, and problems associated with a reliable allergy diagnosis are far from being solved. Especially, the lack of high-quality standardized fungal extracts contributes to the underdiagnosis of fungal allergy. Compared to the manufacturing processes of extracts from other allergen sources, the processes used to manufacture extracts from fungi show the highest variability. The reasons for the high variability are manifold as the starting material, the growth conditions, the protein extraction methods, and the storage conditions all have an influence on the presence and quantity of individual allergens. Despite the vast variety of studies that have analyzed the impact of the different production steps on the allergenicity of fungal allergen extracts, much remains unknown. This review points to the need for further research in the field of fungal allergology, for standardization and for generally accepted guidelines on the preparation of fungal allergen extracts. In particular, the standardization of fungal extracts has been and will continue to be difficult, but it will be crucial for improving allergy diagnosis and therapy.
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Affiliation(s)
| | - Ines Swoboda
- The Molecular Biotechnology Section, Department Applied Life Sciences, FH Campus Wien, University of Applied Sciences, 1100 Vienna, Austria;
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Li Q, Zhang X, Feng Q, Zhou H, Ma C, Lin C, Wang D, Yin J. Common Allergens and Immune Responses Associated with Allergic Rhinitis in China. J Asthma Allergy 2023; 16:851-861. [PMID: 37609376 PMCID: PMC10441643 DOI: 10.2147/jaa.s420328] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Accepted: 07/12/2023] [Indexed: 08/24/2023] Open
Abstract
Allergic rhinitis (AR) is a chronic allergic disease of the upper respiratory system that affects approximately 10-40% of the global population. Due to the large number of plant pollen allergens with obvious seasonal variations, AR is common in China. AR is primarily caused by the abnormal regulation of the immune system. Its pathophysiological mechanism involves a series of immune cells and immune mediators, including cytokines. The present review summarizes the common allergens in China and the complex pathophysiological mechanism of AR. Additionally, host allergen contact, signal transduction, immune cell activation, cytokine release, and a series of inflammatory reactions are described according to their sequence of occurrence.
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Affiliation(s)
- Qirong Li
- Department of Otolaryngology-Head and Neck Surgery, the First Hospital of Jilin University, Changchun, People’s Republic of China
- Laboratory Animal Center, College of Animal Science, Jilin University, Changchun, People’s Republic of China
| | - Xinyi Zhang
- Laboratory Animal Center, College of Animal Science, Jilin University, Changchun, People’s Republic of China
| | - Qiang Feng
- Laboratory Animal Center, College of Animal Science, Jilin University, Changchun, People’s Republic of China
| | - Hengzong Zhou
- Laboratory Animal Center, College of Animal Science, Jilin University, Changchun, People’s Republic of China
| | - Chaoyang Ma
- Hepatology Hospital of Jilin Province, Changchun, People’s Republic of China
| | - Chao Lin
- School of Grain Science and Technology, Jilin Business and Technology College, Changchun, People’s Republic of China
| | - Dongxu Wang
- Laboratory Animal Center, College of Animal Science, Jilin University, Changchun, People’s Republic of China
| | - Jianmei Yin
- Department of Otolaryngology-Head and Neck Surgery, the First Hospital of Jilin University, Changchun, People’s Republic of China
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Wang J, Janson C, Gislason T, Gunnbjörnsdottir M, Jogi R, Orru H, Norbäck D. Volatile organic compounds (VOC) in homes associated with asthma and lung function among adults in Northern Europe. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 321:121103. [PMID: 36690293 DOI: 10.1016/j.envpol.2023.121103] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 01/13/2023] [Accepted: 01/16/2023] [Indexed: 06/17/2023]
Abstract
Associations between measured specific VOC reported to be associated with dampness and microbial growth in dwellings and asthma, lung function were investigated in 159 adults (one adult/home) from three North European cities (Reykjavik, Uppsala and Tartu). Spirometry was performed and forced vital capacity (FVC), forced expiratory volume in 1 s (FEV1) and FEV1/FVC were measured. Among 159 participants, 58% were females, 24.5% atopics, 25.8% current smokers and 41% reported dampness or mold at home. Dimethyl disulphide (p = 0.004), ethyl isobutyrate (p = 0.021) and ethyl 2-methylbutyrate (p = 0.035) were associated with asthma. Isobutanol (p = 0.043), 3-methyl-1-butanol (p = 0.020), 2-hexanone (p = 0.033), 1-octen-3-ol (p = 0.027), 2-methyl-1-butanol (p = 0.022) and 2-ethyl-1-hexanol (p = 0.045) were associated with lower FEV1. Isobutanol (p = 0.004), 3-methyl-1-butanol (p = 0.001), 2-heptanone (p = 0.047) and 2-methyl-1-butanol (p = 0.002) were associated with lower FEV1/FVC. The association between dimethyl disulphide and asthma was more pronounced in females (p for interaction 0.099). The association between 1-butanol and lower FEV1 was more pronounced in males (p for interaction 0.046). The associations between 3-octanone (p for interaction 0.064), 2-ethyl-1-hexanol (p for interaction 0.049) and lower FEV1, and between 2-heptanone (p for interaction 0.021), 3-octanone (p for interaction 0.008) and lower FEV1/FVC were stronger in homes with dampness/mold. Factor analysis identified one VOC factor related to asthma and two VOC factors related to lower lung function. Increased air concentrations of 2-heptanone, ethyl 2-methylbutyrate and ethyl isobutyrate were related to prescence of certain mold species (Aspergillus sp., Cladosporum sp. and Penicillium sp.) or building dampness. Some VOC were associated with type of dwelling, building age and pet keeping. In conclusion, some VOC reported to be associated with dampness and microbial growth can be associated with asthma and lower lung function in adults. Associations between these VOC and respiratory illness can be stronger in homes with dampness/mold. There can be gender differences in respiratory health effects when exposed to indoor VOC.
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Affiliation(s)
- Juan Wang
- Department of Medical Sciences, Occupational and Environmental Medicine, Uppsala University, Uppsala, Sweden.
| | - Christer Janson
- Department of Medical Sciences, Respiratory-, Allergy- and Sleep Research, Uppsala University, Uppsala, Sweden
| | - Thorarinn Gislason
- Department of Sleep, Landspitali University Hospital, Reykjavik, Iceland; Faculty of Medicine, University of Iceland, Reykjavik, Iceland
| | - Maria Gunnbjörnsdottir
- Department of Sleep, Landspitali University Hospital, Reykjavik, Iceland; Faculty of Medicine, University of Iceland, Reykjavik, Iceland
| | - Rain Jogi
- Lung Clinic, Tartu University Hospital, Tartu, Estonia
| | - Hans Orru
- Institute of Family Medicine and Public Health, University of Tartu, Tartu, Estonia; Occupational and Environmental Medicine, Dept of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - Dan Norbäck
- Department of Medical Sciences, Occupational and Environmental Medicine, Uppsala University, Uppsala, Sweden
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Xue Q, Zou M, Guo J, Teng Q, Zhang Q, Sheng L, Xu S, Fang C, Yao N, Li Y, Zhao J. Detection and assessment of dust mite allergens in an indoor environment in Anhui, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:3045-3055. [PMID: 35941504 PMCID: PMC9892137 DOI: 10.1007/s11356-022-22395-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Accepted: 08/01/2022] [Indexed: 06/15/2023]
Abstract
Dust in the home environment is thought to be a potential trigger for increasing allergic diseases, such as allergic rash, rhinitis, asthma, and other conditions, associated with dust mites. To verify the status of dust mite prevalence in indoor surroundings, we collected 189 dust samples from the air conditioner filters (n = 75) and floors (n = 114) of households, schools, and hotels in the Anhui area, China. All samples were measured for dust mite breeding rate and breeding density under light microscopy and analyzed for dust mite species Dermatophagoides farinae 1 (Der f 1) and Dermatophagoides pteronyssinus 1 (Der p 1) allergen using enzyme-linked immunosorbent assay (ELISA). The dust mite breeding rates were 34.67% (26/75) and 20.18% (23/114), respectively, in the dust samples from the floor and air conditioning filters. The breeding density was the highest in households (10/g), followed by schools (9/g) and hotels (4/g). ELISA indicated that the allergen threshold (2.0 µg/g dust) of Der f 1 was exceeded in only two samples and Der p 1 in one sample. Additionally, a questionnaire was used to investigate the health knowledge on allergic diseases involved in indoor facilities, finding that most allergy sufferers were aware that indoor dust might be responsible for their conditions. The findings suggest that regular maintenance of indoor hygiene and cleaning of air-conditioning filters should reduce the risks of exposure to indoor allergens.
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Affiliation(s)
- Qiqi Xue
- Department of Medical Parasitology, Wannan Medical College, WuhuAnhui, 241002, China
| | - Minghui Zou
- Department of Medical Parasitology, Wannan Medical College, WuhuAnhui, 241002, China
| | - Junjie Guo
- Department of Medical Parasitology, Qiqihar Medical College, QiqiharHeilongjiang, 161000, China
| | - Qiao Teng
- Department of Medical Parasitology, Wannan Medical College, WuhuAnhui, 241002, China
| | - Qiqi Zhang
- School of Clinical Medicine, Wannan Medical College, WuhuAnhui, 241002, China
| | - Lingwei Sheng
- Medical Laboratory Science, Wannan Medical College, WuhuAnhui, 241002, China
| | - Sijia Xu
- Medical Laboratory Science, Wannan Medical College, WuhuAnhui, 241002, China
| | - Can Fang
- School of Public Health, Wannan Medical College, WuhuAnhui, 241002, China
| | - Ning Yao
- School of Public Health, Wannan Medical College, WuhuAnhui, 241002, China
| | - Yuanyuan Li
- Department of Medical Parasitology, Wannan Medical College, WuhuAnhui, 241002, China
| | - Jinhong Zhao
- Department of Medical Parasitology, Wannan Medical College, WuhuAnhui, 241002, China.
- Anhui Province Key Laboratory of Biological Macromlecules Research, Wannan Medical College, WuhuAnhui, 241002, China.
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Kumar R, Gaur S, Agarwal M, Menon B, Goel N, Mrigpuri P, Spalgais S, Priya A, Kumar K, Meena R, Sankararaman N, Verma A, Gupta V, Sonal, Prakash A, Safwan MA, Behera D, Singh A, Arora N, Prasad R, Padukudru M, Kant S, Janmeja A, Mohan A, Jain V, Nagendra Prasad K, Nagaraju K, Goyal M. Indian Guidelines for diagnosis of respiratory allergy. INDIAN JOURNAL OF ALLERGY, ASTHMA AND IMMUNOLOGY 2023. [DOI: 10.4103/0972-6691.367373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Khalaf N, Al-Obaidi M, Mohammed S, Al-Malkey M, Nayyef H, Al-Hur F, Sameer F, Mesheal K, Taqi I, Ad’hiah A. Indoor house dust-borne fungi and risk of allergic respiratory diseases in Baghdad city. REVUE FRANÇAISE D'ALLERGOLOGIE 2022. [DOI: 10.1016/j.reval.2021.05.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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9
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Maya‐Manzano JM, Pusch G, Ebner von Eschenbach C, Bartusel E, Belzner T, Karg E, Bardolatzy U, Scheja M, Schmidt‐Weber C, Buters J. Effect of air filtration on house dust mite, cat and dog allergens and particulate matter in homes. Clin Transl Allergy 2022; 12:e12137. [PMID: 35474731 PMCID: PMC9022093 DOI: 10.1002/clt2.12137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 03/09/2022] [Accepted: 03/11/2022] [Indexed: 11/09/2022] Open
Abstract
Background Methods Results Conclusions
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Affiliation(s)
- José María Maya‐Manzano
- Center of Allergy & Environment (ZAUM) Member of the German Center for Lung Research (DZL) Technical University and Helmholtz Center Munich Germany
| | - Gudrun Pusch
- Center of Allergy & Environment (ZAUM) Member of the German Center for Lung Research (DZL) Technical University and Helmholtz Center Munich Germany
| | - Cordula Ebner von Eschenbach
- Center of Allergy & Environment (ZAUM) Member of the German Center for Lung Research (DZL) Technical University and Helmholtz Center Munich Germany
| | - Elke Bartusel
- Center of Allergy & Environment (ZAUM) Member of the German Center for Lung Research (DZL) Technical University and Helmholtz Center Munich Germany
| | - Thomas Belzner
- Center of Allergy & Environment (ZAUM) Member of the German Center for Lung Research (DZL) Technical University and Helmholtz Center Munich Germany
| | - Erwin Karg
- Center of Allergy & Environment (ZAUM) Member of the German Center for Lung Research (DZL) Technical University and Helmholtz Center Munich Germany
| | - Ulrich Bardolatzy
- Center of Allergy & Environment (ZAUM) Member of the German Center for Lung Research (DZL) Technical University and Helmholtz Center Munich Germany
| | | | - Carsten Schmidt‐Weber
- Center of Allergy & Environment (ZAUM) Member of the German Center for Lung Research (DZL) Technical University and Helmholtz Center Munich Germany
| | - Jeroen Buters
- Center of Allergy & Environment (ZAUM) Member of the German Center for Lung Research (DZL) Technical University and Helmholtz Center Munich Germany
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Sánchez P, Vélez-del-Burgo A, Suñén E, Martínez J, Postigo I. Fungal Allergen and Mold Allergy Diagnosis: Role and Relevance of Alternaria alternata Alt a 1 Protein Family. J Fungi (Basel) 2022; 8:277. [PMID: 35330279 PMCID: PMC8954643 DOI: 10.3390/jof8030277] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/03/2022] [Accepted: 03/07/2022] [Indexed: 02/04/2023] Open
Abstract
Alternaria is a genus of worldwide fungi found in different habitats such as soil, the atmosphere, plants or indoor environments. Alternaria species are saprobic-largely involved in the decomposition of organic material-but they can also act as animal pathogens, causing disease in humans and animals, developing infections, toxicosis and allergic diseases. A. alternata is considered one of the most important sources of fungal allergens worldwide and it is associated with severe asthma and respiratory status. Among the A. alternata allergens, Alt a 1 is the main sensitizing allergen and its usefulness in diagnosis and immunotherapy has been demonstrated. Alt a 1 seems to define a protein family that can be used to identify related pathogenic fungi in plants and fruits, and to establish taxonomic relationships between the different fungal divisions.
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Affiliation(s)
| | | | | | | | - Idoia Postigo
- Department of Immunology, Microbiology and Parasitology, Faculty of Pharmacy and Laboratory of Parasitology and Immunoallergy, Lascaray Research Centre, University of the Basque Country, 01006 Vitoria-Gasteiz, Spain; (P.S.); (A.V.-d.-B.); (E.S.); (J.M.)
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Zhang W, Xie B, Liu M, Wang Y. Associations between sensitisation to allergens and allergic diseases: a hospital-based case-control study in China. BMJ Open 2022; 12:e050047. [PMID: 35105568 PMCID: PMC8808394 DOI: 10.1136/bmjopen-2021-050047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
OBJECTIVES To assess the associations of sensitisation to common allergens with atopic dermatitis, allergic rhinitis and allergic asthma in adults. DESIGN Case-control study. SETTING Data were collected from the First Affiliated Hospital of Harbin Medical University in Harbin, China. PARTICIPANTS Cases were 5111 patients with physician-diagnosed atopic dermatitis (n=2631), allergic asthma (n=1320) and allergic rhinitis (n=1160) recruited from the department of allergy from March 2009 to December 2017. Controls were 2576 healthy adults who underwent physical examination at the same hospital during the same period. MAIN OUTCOME MEASURES Specific IgE levels to 16 common food, indoor and outdoor allergens were assessed in all participants. Adjusted ORs and 95% CIs for the association between allergen sensitisation and allergic diseases were estimated using multivariate logistic regression. RESULTS The prevalence of allergen sensitisation was higher in patients with atopic dermatitis (indoor=17.14%, outdoor=12.85%, food=21.44%), allergic rhinitis (indoor=23.18%, outdoor=26.81%, food=8.94%) and allergic asthma (indoor=24.65%, outdoor=16.46%, food=14.31%) compared with controls (indoor=11.03%, outdoor=6.84%, food=5.83%). After adjustment for potential confounding variables, there was a dose-response relevance between the levels of allergen-specific IgE and allergic diseases (p trend <0.0001). The number of allergens to which a patient was sensitised increased the risk of allergic diseases (atopic dermatitis: highest adjusted OR=4.28, 95% CI 2.57 to 7.11; allergic rhinitis: highest adjusted OR=13.00, 95% CI 3.76 to 45.00; allergic asthma: OR=2.37, 95% CI 1.67 to 3.37). CONCLUSION There was a dose-response relevance between levels of allergen-specific IgE and allergic diseases' prevalence, and multiple sensitisations increased the risk of allergic diseases. This study provides evidence for the prophylaxis of allergic diseases.
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Affiliation(s)
- Wei Zhang
- Department of Biostatistics, Harbin Medical University, Harbin, Heilongjiang, China
| | - Biao Xie
- Department of Biostatistics, Chongqing Medical University, Chongqing, Sichuan, China
| | - Meina Liu
- Department of Biostatistics, Harbin Medical University, Harbin, Heilongjiang, China
| | - Yupeng Wang
- Department of Biostatistics, Harbin Medical University, Harbin, Heilongjiang, China
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Yen CY, Yu CH, Tsai JJ, Tseng HK, Liao EC. Effects of Local Nasal Immunotherapy with FIP-fve Peptide and Denatured Tyrophagus putrescentiae for Storage Mite-Induced Airway Inflammation. Arch Immunol Ther Exp (Warsz) 2022; 70:6. [PMID: 35099617 DOI: 10.1007/s00005-022-00645-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 12/06/2021] [Indexed: 12/17/2022]
Abstract
Allergic diseases are affecting public health and have increased over the last decade. Sensitization to mite allergens is a considerable trigger for allergy development. Storage mite-Tyrophagus putrescentiae shows great significance of allergenic potential and clinical relevance. The fungal immunomodulatory peptide FIP-fve has been reported to possess immunomodulatory activity. We aimed to determine whether T. putrescentiae-induced sensitization and airway inflammation in mice could be downregulated by FIP-fve in conjunction with denatured T. putrescentiae (FIP-fve and DN-Tp). Immune responses and physiologic variations in immunoglobulins, leukocyte subpopulations, cytokine productions, pulmonary function, lung pathology, cytokines in CD4+ and Treg cells were evaluated after local nasal immunotherapy (LNIT). After the LNIT with FIP-fve and DN-Tp, levels of specific IgE, IgG1, and IgG2a in the sera and IgA in the bronchoalveolar lavage fluid (BALF) were significantly reduced. Infiltrations of inflammatory leukocytes (eosinophils, neutrophils, and lymphocytes) in the airway decreased significantly. Production of proinflammatory cytokines (IL-5, IL-13, IL-17F and IL-23) and chemokine (IL-8) were significantly reduced, and Th1-cytokine (IL-12) increased in the airway BALF after LNIT. Pulmonary functions of Penh values were significantly decreased after the methacholine challenge, which resulted in a reduction of airway hypersensitivity after LNIT. Bronchus pathology showed a reduction of inflammatory cell infiltration and epithelium damage after LNIT. The IL-4+/CD4+ T cells could be downregulated and the IFN-γ+/CD4+ T cells upregulated. The Treg-related immunity of IL-10 and Foxp3 expressions in CD4+CD25+ cells were both upregulated after LNIT. In conclusion, LNIT with FIP-fve and DN-Tp had an anti-inflammatory effect on mite-induced airway inflammations and possesses potential as an immunomodulatory therapy agent for allergic airway diseases.
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Affiliation(s)
- Chung-Yang Yen
- Department of Dermatology, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Ching-Hsiang Yu
- Department of Medicine, MacKay Medical College, No. 46, Sec.3, Jhong-Jheng Rd. San-Jhih, New Taipei City, 24245, Taiwan.,Department of Medical Education, MacKay Memorial Hospital, Taipei, Taiwan
| | - Jaw-Ji Tsai
- Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, Asia University Hospital, Taichung, Taiwan
| | - Hsiang-Kuang Tseng
- Department of Medicine, MacKay Medical College, No. 46, Sec.3, Jhong-Jheng Rd. San-Jhih, New Taipei City, 24245, Taiwan.,Department of Internal Medicine, MacKay Memorial Hospital, Taipei, Taiwan
| | - En-Chih Liao
- Department of Medicine, MacKay Medical College, No. 46, Sec.3, Jhong-Jheng Rd. San-Jhih, New Taipei City, 24245, Taiwan. .,Institute of Biomedical Sciences, MacKay Medical College, New Taipei City, Taiwan.
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Abstract
PRACTICAL RELEVANCE Human allergy to cats affects a substantial and growing proportion of the global population, and cat allergy is regarded as the third most common cause of human respiratory allergies, and the second most common indoor cause. Veterinarians will frequently encounter owners who are cat-allergic, and having an understanding of this disease and the methods available to help control the allergy will assist them in giving appropriate advice, alongside human healthcare professionals. AIM The aim of this review is to summarise currently available data on the prevalence, causes, symptoms and control of human allergy to cats. In terms of managing cat allergy, the emphasis is on reviewing current and emerging modalities to reduce environmental exposure to cat allergens rather than on pharmacotherapy or immunotherapy, as it is in these areas in particular that the veterinarian may be able to offer help and advice to complement that of human healthcare professionals. EVIDENCE BASE The information in this review is drawn from the current and historical literature on human allergy to cats, and approaches to reduce exposure to cat allergens and manage symptoms of cat allergy.
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Prapamontol T, Norbäck D, Thongjan N, Suwannarin N, Somsunun K, Ponsawansong P, Khuanpan T, Kawichai S, Naksen W. Associations between indoor environment in residential buildings in wet and dry seasons and health of students in upper northern Thailand. INDOOR AIR 2021; 31:2252-2265. [PMID: 34121228 DOI: 10.1111/ina.12873] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 04/30/2021] [Accepted: 05/27/2021] [Indexed: 06/12/2023]
Abstract
We performed a repeated questionnaire study on home environment and health (six medical symptoms) in 1159 junior high school students (age 12.8 ± 0.7 years) in upper northern Thailand in wet and dry seasons. Data on outdoor temperature, relative humidity (RH), and air pollution were collected from nearest monitoring station. Odds ratios (OR) were calculated by multi-level logistic regression. Most common symptoms were rhinitis (62.5%), headache (49.8%), throat (42.8%), and ocular symptoms (42.5%). Ocular symptoms were more common at lower RH and rhinitis more common in dry season. Water leakage (28.2%), indoor mold (7.1%), mold odor (4.1%), and windowpane condensation (13.6%) were associated with all six symptoms (ORs: 1.3-3.5). Other risk factors included cat keeping, environmental tobacco smoke (ETS), other odor than mold odor, gas cooking, and cooking with biomass fire. Biomass burning inside and outside the home for other reasons than cooking was associated with all six symptoms (ORs: 1.5-2.6). Associations between home environment exposure and rhinitis were stronger in wet season. In conclusion, dampness-related exposure, windowpane condensation, cat keeping, ETS, gas cooking, and biomass burning can impair adolescent health in upper northern Thailand. In subtropical areas, environmental health effects should be investigated in wet and dry seasons.
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Affiliation(s)
- Tippawan Prapamontol
- Research Institute for Health Sciences, Chiang Mai University, Chiang Mai, Thailand
| | - Dan Norbäck
- Research Institute for Health Sciences, Chiang Mai University, Chiang Mai, Thailand
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Nathaporn Thongjan
- Research Institute for Health Sciences, Chiang Mai University, Chiang Mai, Thailand
| | - Neeranuch Suwannarin
- Research Institute for Health Sciences, Chiang Mai University, Chiang Mai, Thailand
| | - Kawinwut Somsunun
- Research Institute for Health Sciences, Chiang Mai University, Chiang Mai, Thailand
| | | | - Tosabhorn Khuanpan
- Research Institute for Health Sciences, Chiang Mai University, Chiang Mai, Thailand
| | - Sawaeng Kawichai
- Research Institute for Health Sciences, Chiang Mai University, Chiang Mai, Thailand
| | - Warangkana Naksen
- Faculty of Public Health, Chiang Mai University, Chiang Mai, Thailand
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15
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da Silva Antunes R, Sutherland A, Frazier A, Schulten V, Pomés A, Glesner J, Calatroni A, Altman MC, Wood RA, O'Connor GT, Pongracic JA, Khurana Hershey GK, Kercsmar CM, Gruchalla RS, Gill M, Liu AH, Zoratti E, Kattan M, Busse PJ, Bacharier LB, Teach SJ, Wheatley LM, Togias A, Busse WW, Jackson DJ, Sette A. Heterogeneity of magnitude, allergen immunodominance, and cytokine polarization of cockroach allergen-specific T cell responses in allergic sensitized children. Clin Transl Allergy 2021; 11:e12073. [PMID: 34691392 PMCID: PMC8514843 DOI: 10.1002/clt2.12073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 09/13/2021] [Accepted: 10/03/2021] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Characterization of allergic responses to cockroach (CR), a common aeroallergen associated with asthma, has focused mainly on IgE reactivity, but little is known about T cell responses, particularly in children. We conducted a functional evaluation of CR allergen-specific T cell reactivity in a cohort of CR allergic children with asthma. METHODS Peripheral blood mononuclear cells (PBMCs) were obtained from 71 children, with mild-to-moderate asthma who were enrolled in a CR immunotherapy (IT) clinical trial, prior to treatment initiation. PBMC were stimulated with peptide pools derived from 11 CR allergens, and CD4+ T cell responses assessed by intracellular cytokine staining. RESULTS Highly heterogeneous responses in T cell reactivity were observed among participants, both in terms of the magnitude of cytokine response and allergen immunodominance. Reactivity against Bla g 9 and Bla g 5 was most frequent. The phenotype of the T cell response was dominated by IL-4 production and a Th2 polarized profile in 54.9% of participants, but IFNγ production and Th1 polarization was observed in 25.3% of the participants. The numbers of regulatory CD4+ T cells were also highly variable and the magnitude of effector responses and Th2 polarization were positively correlated with serum IgE levels specific to a clinical CR extract. CONCLUSIONS Our results demonstrate that in children with mild-to-moderate asthma, CR-specific T cell responses display a wide range of magnitude, allergen dominance, and polarization. These results will enable examination of whether any of the variables measured are affected by IT and/or are predictive of clinical outcomes.
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Affiliation(s)
| | - Aaron Sutherland
- Division of Vaccine DiscoveryLa Jolla Institute for ImmunologyLa JollaCaliforniaUSA
| | - April Frazier
- Division of Vaccine DiscoveryLa Jolla Institute for ImmunologyLa JollaCaliforniaUSA
| | - Veronique Schulten
- Division of Vaccine DiscoveryLa Jolla Institute for ImmunologyLa JollaCaliforniaUSA
| | - Anna Pomés
- Basic ResearchIndoor Biotechnologies, Inc.CharlottesvilleVirginiaUSA
| | - Jill Glesner
- Basic ResearchIndoor Biotechnologies, Inc.CharlottesvilleVirginiaUSA
| | | | - Matthew C. Altman
- Benaroya Research Institute Systems Immunology DivisionDepartment of MedicineUniversity of WashingtonSeattleWashingtonUSA
| | - Robert A. Wood
- Division of Pediatric Allergy, Immunology and RheumatologyDepartment of PediatricsJohns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - George T. O'Connor
- Boston University School of MedicinePulmonary CenterBostonMassachusettsUSA
| | - Jacqueline A. Pongracic
- Advanced General Pediatrics and Primary CareAnn & Robert H. Lurie Children's Hospital of ChicagoChicagoIllinoisUSA
| | | | - Carolyn M. Kercsmar
- Division of Pulmonary MedicineCincinnati Children's HospitalCincinnatiOhioUSA
| | - Rebecca S. Gruchalla
- Divisions of Infectious Diseases and Pulmonary Vascular BiologyDepartment of PediatricsUniversity of Texas Southwestern Medical CenterDallasTexasUSA
| | - Michelle Gill
- Divisions of Infectious Diseases and Pulmonary Vascular BiologyDepartment of PediatricsUniversity of Texas Southwestern Medical CenterDallasTexasUSA
| | - Andrew H. Liu
- Department of PediatricsChildren's Hospital ColoradoUniversity of Colorado School of MedicineAuroraColoradoUSA
| | - Edward Zoratti
- Henry Ford Health System and Wayne State University School of MedicineDetroitMichiganUSA
| | - Meyer Kattan
- College of Physicians and SurgeonsColumbia UniversityNew YorkNew YorkUSA
| | - Paula J. Busse
- Division of Clinical Immunology and AllergyIcahn School of Medicine at Mount SinaiNew YorkNew YorkUSA
| | - Leonard B. Bacharier
- Department of PediatricsMonroe Carell Jr Children's Hospital at Vanderbilt University Medical CenterNashvilleTennesseeUSA
| | - Stephen J. Teach
- Center for Translational ResearchChildren's National HospitalWashingtonDCUSA
| | - Lisa M. Wheatley
- Division of Allergy, Immunology, and TransplantationNational Institute of Allergy and Infectious DiseasesNational Institutes of HealthRockvilleMarylandUSA
| | - Alkis Togias
- Division of Allergy, Immunology, and TransplantationNational Institute of Allergy and Infectious DiseasesNational Institutes of HealthRockvilleMarylandUSA
| | - William W. Busse
- Departments of Pediatrics and MedicineUniversity of Wisconsin School of Medicine and Public HealthMadisonWisconsinUSA
| | - Daniel J. Jackson
- Departments of Pediatrics and MedicineUniversity of Wisconsin School of Medicine and Public HealthMadisonWisconsinUSA
| | - Alessandro Sette
- Division of Vaccine DiscoveryLa Jolla Institute for ImmunologyLa JollaCaliforniaUSA
- Department of MedicineUniversity of California San DiegoLa JollaCaliforniaUSA
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16
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Kulalert P, Sritipsukho P, Nanthapisal S, Poachanukoon O. Concordance of skin test reactivity between indoor inhalant allergens among children with allergic respiratory disease. BMC Pediatr 2021; 21:338. [PMID: 34380462 PMCID: PMC8356470 DOI: 10.1186/s12887-021-02800-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 07/15/2021] [Indexed: 11/24/2022] Open
Abstract
Background In vitro studies have demonstrated cross-reactivity among indoor allergen proteins in children with allergic respiratory diseases. However, there are only few studies evaluating in vivo response. A skin prick test (SPT) with commercial indoor solutions is widely used in clinical practice. We aimed to evaluate SPT agreement in children with allergic respiratory disease between pairs of common indoor allergens. Methods We reviewed SPT results of children 2 to 18 years old, diagnosed with respiratory allergic disease. Results from house dust mite (Dermatophagoides farinae, Dermatophagoides pteronyssinus), cockroach (Periplaneta americana, Blatella germanica), cat and dog were collected. Sensitization was defined as ≥ 3 mm in wheal diameter. Kappa coefficient (κ) was used to analyze sensitization concordance for each allergen pair. Results The charts of 300 children, 187 (62.33%) males, were reviewed. Mean age was 7.43 ± 3.29 years with 183 (61%), 140 (46.67%), 45 (15%), 30 (10%) sensitizations to house dust mite (HDM), cockroach, cat and dog, respectively. Sensitization concordance between HDM and cockroach was moderate: κ = 0.53 (95% CI: 0.42–0.64). Moderate agreement occurred between dog and cat: κ = 0.41 (95%CI: 0.30–0.52). HDM-sensitized children showed poor concordance with both cat κ = 0.17 (95%CI: 0.09–0.24) and dog κ = 0.09 (95%CI: 0.03–0.14). There was also poor concordance between cockroach-sensitized children to cat κ = 0.19 (95%CI; 0.11–0.28) and dog κ = 0.11 (95%CI; 0.04–0.18). Conclusion We demonstrated moderate agreement of SPT response between HDM and cockroach as well as dog and cat. This may be due to cross-reactivity. Component-resolved diagnosis should be considered in children with co-sensitization of these allergen pairs.
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Affiliation(s)
- Prapasri Kulalert
- Department of Clinical Epidemiology, Faculty of Medicine, Thammasat University, Pathumthani, 12120, Thailand. .,Division of Allergy and Immunology, Department of Pediatrics, Faculty of Medicine, Thammasat University, Pathumthani, Thailand. .,Center of Excellence in Applied Epidemiology, Thammasat University, Pathumthani, Thailand. .,Center of Excellence for Allergy, Asthma and Pulmonary Disease, Thammasat University, Pathumthani, Thailand.
| | - Paskorn Sritipsukho
- Division of Allergy and Immunology, Department of Pediatrics, Faculty of Medicine, Thammasat University, Pathumthani, Thailand.,Center of Excellence in Applied Epidemiology, Thammasat University, Pathumthani, Thailand.,Center of Excellence for Allergy, Asthma and Pulmonary Disease, Thammasat University, Pathumthani, Thailand
| | - Sira Nanthapisal
- Division of Allergy and Immunology, Department of Pediatrics, Faculty of Medicine, Thammasat University, Pathumthani, Thailand.,Center of Excellence in Applied Epidemiology, Thammasat University, Pathumthani, Thailand.,Center of Excellence for Allergy, Asthma and Pulmonary Disease, Thammasat University, Pathumthani, Thailand
| | - Orapan Poachanukoon
- Division of Allergy and Immunology, Department of Pediatrics, Faculty of Medicine, Thammasat University, Pathumthani, Thailand.,Center of Excellence in Applied Epidemiology, Thammasat University, Pathumthani, Thailand.,Center of Excellence for Allergy, Asthma and Pulmonary Disease, Thammasat University, Pathumthani, Thailand
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17
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Gremski LH, Matsubara FH, da Justa HC, Schemczssen-Graeff Z, Baldissera AB, Schluga PHDC, Leite IDO, Boia-Ferreira M, Wille ACM, Senff-Ribeiro A, Veiga SS. Brown spider venom toxins: what are the functions of astacins, serine proteases, hyaluronidases, allergens, TCTP, serpins and knottins? J Venom Anim Toxins Incl Trop Dis 2021; 27:e20200188. [PMID: 34377142 PMCID: PMC8314928 DOI: 10.1590/1678-9199-jvatitd-2020-0188] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 03/09/2021] [Indexed: 12/27/2022] Open
Abstract
Accidents caused by the bites of brown spiders (Loxosceles) generate a clinical condition that often includes a threatening necrotic skin lesion near the bite site along with a remarkable inflammatory response. Systemic disorders such as hemolysis, thrombocytopenia, and acute renal failure may occur, but are much less frequent than the local damage. It is already known that phospholipases D, highly expressed toxins in Loxosceles venom, can induce most of these injuries. However, this spider venom has a great range of toxins that probably act synergistically to enhance toxicity. The other protein classes remain poorly explored due to the difficulty in obtaining sufficient amounts of them for a thorough investigation. They include astacins (metalloproteases), serine proteases, knottins, translationally controlled tumor proteins (TCTP), hyaluronidases, allergens and serpins. It has already been shown that some of them, according to their characteristics, may participate to some extent in the development of loxoscelism. In addition, all of these toxins present potential application in several areas. The present review article summarizes information regarding some functional aspects of the protein classes listed above, discusses the directions that could be taken to materialize a comprehensive investigation on each of these toxins as well as highlights the importance of exploring the full venom repertoire.
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Affiliation(s)
- Luiza Helena Gremski
- Department of Cell Biology, Federal University of Paraná (UFPR), Curitiba, PR, Brazil
| | | | - Hanna Câmara da Justa
- Department of Cell Biology, Federal University of Paraná (UFPR), Curitiba, PR, Brazil
| | | | | | | | | | | | - Ana Carolina Martins Wille
- Department of Molecular Structural Biology and Genetics, State University of Ponta Grossa (UEPG), Ponta Grossa, PR, Brazil
| | - Andrea Senff-Ribeiro
- Department of Cell Biology, Federal University of Paraná (UFPR), Curitiba, PR, Brazil
| | - Silvio Sanches Veiga
- Department of Cell Biology, Federal University of Paraná (UFPR), Curitiba, PR, Brazil
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18
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Wangorsch A, Jamin A, Eichhorn S, Pablos I, Sharma S, Schweidler B, Kastner B, Wildner S, Saloga J, Führer F, Reyna Orozco RR, Sherkat R, Sadeghi S, Teifoori F, Park JW, Briza P, Vieths S, Ferreira F, Arora N, Lidholm J, Gadermaier G, Scheurer S. Component-Resolved Diagnosis of American Cockroach (Periplaneta americana) Allergy in Patients From Different Geographical Areas. FRONTIERS IN ALLERGY 2021; 2:691627. [PMID: 35386988 PMCID: PMC8974670 DOI: 10.3389/falgy.2021.691627] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 06/03/2021] [Indexed: 11/13/2022] Open
Abstract
Background: Manifestation of respiratory allergy to American cockroach (Periplaneta americana) is prominent in the subtropical and tropical areas. However, co-existing perennial indoor inhalant allergies frequently compromise clinical diagnosis of cockroach allergy, and the analysis of sensitization pattern is limited by the lack of Periplaneta allergens widely available for component-resolved diagnostics (CRD). Objective: To evaluate a collection of previously described recombinant Periplaneta allergens for CRD in cockroach allergy. Methods: A panel of nine recombinant Periplaneta allergens (Per a 1–5, 7–10) was generated, purified, and subjected to physicochemical characterization by applying circular dichroism (CD) spectroscopy, dynamic light scattering (DLS), amino acid (AA) analysis, and mass spectrometry (MS). Patients (n = 117) from India, Korea, Venezuela, and Iran, reporting perennial respiratory indoor allergies with IgE sensitization to cockroach (P. americana and/or Blattella germanica), were included. The sensitization profile was monitored by the experimental ImmunoCAP testing. Results: ImmunoCAP testing confirmed IgE sensitization to Periplaneta and/or Blattella extract in 98 of 117 patients (r = 0.95). Five out of 117 patients were sensitized to only one of the two cockroach species. Within the whole study group, the prevalence of sensitization to individual allergens varied from 4% (Per a 2) to 50% (Per a 9), with the highest IgE values to Per a 9. Patients from four countries displayed different sensitization profiles at which Per a 3 and Per a 9 were identified as major allergens in India and Korea. Periplaneta-derived lipocalin and myosin light chain were characterized as new minor allergens, designated as Per a 4 and Per a 8. Periplaneta extract showed higher diagnostic sensitivity than all individual components combined, suggesting the existence of allergens yet to be discovered. Conclusion: Utilization of a panel of purified Periplaneta allergens revealed highly heterogeneous sensitization patterns and allowed the classification of lipocalin and myosin light chain from Periplaneta as new minor allergens.
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Affiliation(s)
| | - Annette Jamin
- Molecular Allergology, Paul-Ehrlich-Institut, Langen, Germany
| | - Stephanie Eichhorn
- Department of Biosciences, Paris Lodron University of Salzburg, Salzburg, Austria
| | - Isabel Pablos
- Department of Biosciences, Paris Lodron University of Salzburg, Salzburg, Austria
| | - Swati Sharma
- Allergy and Immunology Section, CSIR-Institute of Genomics and Integrative Biology, New Delhi, India
| | - Bettina Schweidler
- Department of Biosciences, Paris Lodron University of Salzburg, Salzburg, Austria
| | - Bianca Kastner
- Department of Biosciences, Paris Lodron University of Salzburg, Salzburg, Austria
| | - Sabrina Wildner
- Department of Biosciences, Paris Lodron University of Salzburg, Salzburg, Austria
| | - Joachim Saloga
- Department of Dermatology, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Frank Führer
- Batch Control and Allergen Analysis, Paul-Ehrlich-Institut, Langen, Germany
| | | | - Roya Sherkat
- Acquired Immunodeficiency Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Somayeh Sadeghi
- Acquired Immunodeficiency Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Fardis Teifoori
- Acquired Immunodeficiency Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Jung-Won Park
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, South Korea
| | - Peter Briza
- Department of Biosciences, Paris Lodron University of Salzburg, Salzburg, Austria
| | - Stefan Vieths
- Molecular Allergology, Paul-Ehrlich-Institut, Langen, Germany
| | - Fatima Ferreira
- Department of Biosciences, Paris Lodron University of Salzburg, Salzburg, Austria
| | - Naveen Arora
- Allergy and Immunology Section, CSIR-Institute of Genomics and Integrative Biology, New Delhi, India
| | - Jonas Lidholm
- Thermo Fisher Scientific, Immunodiagnostics, Uppsala, Sweden
| | - Gabriele Gadermaier
- Department of Biosciences, Paris Lodron University of Salzburg, Salzburg, Austria
| | - Stephan Scheurer
- Molecular Allergology, Paul-Ehrlich-Institut, Langen, Germany
- *Correspondence: Stephan Scheurer
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Norbäck D, Hashim Z, Ali F, Hashim JH. Asthma symptoms and respiratory infections in Malaysian students-associations with ethnicity and chemical exposure at home and school. ENVIRONMENTAL RESEARCH 2021; 197:111061. [PMID: 33785322 DOI: 10.1016/j.envres.2021.111061] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 02/20/2021] [Accepted: 03/18/2021] [Indexed: 06/12/2023]
Abstract
Little is known on respiratory effects of indoor chemicals in the tropics. We investigated associations between asthma and respiratory infections in Malaysian students and chemical exposure at home and at school. Moreover, we investigated differences in home environment between the three main ethnic groups in Malaysia (Malay, Chinese, Indian). Totally, 462 students from 8 junior high schools in Johor Bahru participated (96% participation rate). The students answered a questionnaire on health and home environment. Climate, carbon dioxide (CO2), volatile organic compounds (VOC), formaldehyde and nitrogen dioxide (NO2) were measured inside and outside the schools. Multilevel logistic regression was applied to study associations between exposure and health. Totally 4.8% were smokers, 10.3% had wheeze, 9.3% current asthma, and had 18.8% any respiratory infection in the past 3 months. Malay students had more dampness or mould (p < 0.001), more environmental tobacco smoke (ETS) (p < 0.001) and more cats (p < 0.001) at home as compared to Chinese or Indian students. Wheeze was associated with ethnicity (p = 0.02; lower in Indian), atopy (p = 0.002), current smoking (p = 0.02) and recent indoor painting at home (p = 0.03). Current asthma was associated with ethnicity (p = 0.001; lower in Chinese) and para-dichlorobenzene in classroom air (p = 0.008). Respiratory infections were related to atopy (p = 0.002), ethylbenzene (p = 0.02) and para-dichlorobenzene (p = 0.01) in classroom air. Para-dichlorobenzene is used in Asia against insects. In conclusion, chemical emissions from recent indoor painting at home can increase the risk of wheeze. In schools, para-dichlorobenzene can increase the risk of current asthma and respiratory infections while ethylbenzene can increase the risk of respiratory infections.
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Affiliation(s)
- Dan Norbäck
- Uppsala University, Department of Medical Science, Occupational and Environmental Medicine, University Hospital, 75185, Uppsala, Sweden.
| | - Zailina Hashim
- Department of Environmental and Occupational Health, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, UPM, Serdang, Selangor, Malaysia
| | - Faridah Ali
- Primary Care Unit, Johor State Health Department, 80100, Johor Bahru, Malaysia
| | - Jamal Hisham Hashim
- Faculty of Health Sciences, Universiti Selangor, 40000, Shah Alam, Malaysia; Department of Community Health, National University of Malaysia, 56000, Kuala Lumpur, Malaysia
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20
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Al-Naseri A, Al-Absi S, El Ridi R, Mahana N. A comprehensive and critical overview of schistosomiasis vaccine candidates. J Parasit Dis 2021; 45:557-580. [PMID: 33935395 PMCID: PMC8068781 DOI: 10.1007/s12639-021-01387-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Accepted: 03/31/2021] [Indexed: 12/11/2022] Open
Abstract
A digenetic platyhelminth Schistosoma is the causative agent of schistosomiasis, one of the neglected tropical diseases that affect humans and animals in numerous countries in the Middle East, sub-Saharan Africa, South America and China. Several control methods were used for prevention of infection or treatment of acute and chronic disease. Mass drug administration led to reduction in heavy-intensity infections and morbidity, but failed to decrease schistosomiasis prevalence and eliminate transmission, indicating the need to develop anti-schistosome vaccine to prevent infection and parasite transmission. This review summarizes the efficacy and protective capacity of available schistosomiasis vaccine candidates with some insights and future prospects.
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Affiliation(s)
- Aya Al-Naseri
- Zoology Department, Faculty of Science, Cairo Univesity, Giza, 12613 Egypt
| | - Samar Al-Absi
- Zoology Department, Faculty of Science, Cairo Univesity, Giza, 12613 Egypt
| | - Rashika El Ridi
- Zoology Department, Faculty of Science, Cairo Univesity, Giza, 12613 Egypt
| | - Noha Mahana
- Zoology Department, Faculty of Science, Cairo Univesity, Giza, 12613 Egypt
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21
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Huber S, Gadermaier G, Bohle B, Ferreira F, Briza P. Proteomic profiling of commercial dust mite skin prick test solutions and allergy vaccines from India. World Allergy Organ J 2021; 14:100516. [PMID: 33717396 PMCID: PMC7921882 DOI: 10.1016/j.waojou.2021.100516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 01/13/2021] [Accepted: 01/19/2021] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Skin prick test (SPT) solutions and allergy vaccines (AVs) are crucial tools for diagnosis and therapy of allergies. It was the aim of this study to corroborate the content of products for diagnosis and treatment of dust mite allergies that are produced and sold in India. METHODS SDS-PAGE, immunoblots and high-resolution mass spectrometric analysis was performed with 16 house dust mite (HDM) SPT solutions and AVs from 3 Indian manufacturers. Authority-approved European SPT solutions and in-house extracts were used as references. RESULTS From the 5 Indian Dermatophagoides pteronyssinus products, none contained proteins from this source. Instead, 1 sample contained Dermatophagoides farinae and human serum proteins, 4 products contained allergens from the storage mite Suidasia medanensis, allergens from the legume Cicer arietinum (chickpea), and proteins from baker's yeast. From 4 Indian D. farinae-labeled products, 2 contained human serum proteins and a limited number of D. farinae allergens. Two contained only Suidasia, Cicer, and yeast proteins. In contrast, the European authority-approved D. pteronyssinus and D. farinae SPT solutions that were used as reference in this study, contained exclusively proteins of the respective species and covered the expected allergen spectra. The Blomia tropicalis sample contained no Blomia allergens at all, but consisted exclusively of Suidasia, Cicer, and yeast proteins. All 6 HDM samples consisted of human serum proteins and limited amounts of D. farinae allergens. CONCLUSIONS All commercial Indian SPT solutions and AVs analyzed in this study are not suitable for dust mite allergy diagnosis and therapy, as they contain either no, or only a limited number of, HDM allergens. In addition, their use could lead to misdiagnosis since some of them contain allergens from other sources, including the storage mite Suidasia, chickpea, as well as baker's yeast. Further, their application might be harmful to patients, as some products contain large amounts of proteins of human origin. Analysis of European SPT solutions, on the other hand, confirmed their suitability for dust mite allergy diagnosis.
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Affiliation(s)
- Sara Huber
- Department of Biosciences, University of Salzburg, Salzburg, Austria
| | | | - Barbara Bohle
- Department of Pathophysiology and Allergy Research, Centre for Pathophysiology, Infectiology and Immunology, Medical University Vienna, Vienna, Austria
| | - Fatima Ferreira
- Department of Biosciences, University of Salzburg, Salzburg, Austria
| | - Peter Briza
- Department of Biosciences, University of Salzburg, Salzburg, Austria
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Wang J, Zhang Y, Li B, Zhao Z, Huang C, Zhang X, Deng Q, Lu C, Qian H, Yang X, Sun Y, Sundell J, Norbäck D. Asthma and allergic rhinitis among young parents in China in relation to outdoor air pollution, climate and home environment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 751:141734. [PMID: 32882555 DOI: 10.1016/j.scitotenv.2020.141734] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 08/14/2020] [Indexed: 05/14/2023]
Abstract
We estimated associations between ambient air pollution, home environment and asthma as well as rhinitis among adults across China. A total of 40,279 young adults from eight Chinese cities participated in a questionnaire survey (participation rate 75%). There were questions on health and home environment. Information on city level gross domestic product (GDP) per capita, ambient temperature and PM10 and NO2 were collected from registers. Two-level logistic regression models were used to study health associations. Totally 1.6% reported asthma and 6.6% reported allergic rhinitis (AR). Higher temperature was associated with more asthma but less AR. Higher GDP was associated with less asthma but more AR. Higher degree of urbanization, higher level of NO2 and living near heavily trafficked road were risk factors for asthma and AR. Participants in older buildings reported more asthma. Redecoration and buying new furniture were related to more asthma and AR (OR = 1.15-1.91). Using natural gas (OR = 1.34) and biomass (OR = 1.35) for cooking were risk factors for AR. Burning mosquito coils and incense increased the risk of asthma and AR. Cat keeping (OR = 2.88), dog keeping (OR = 2.04), cockroaches (OR = 1.54) and rats or mice (OR = 1.46) were associated with asthma. Cockroaches increased the risk of AR (OR = 1.22). Air humidifier and air cleaner were linked to asthma and AR. Frequent cleaning and exposing bedding to sunshine were protective. In conclusion, urbanization, NO2 and traffic exhaust can increase the risk of adult asthma and AR. Higher ambient temperature was related to more asthma but less AR. Indoor animals such as cats, dogs, rats/mice and presence of cockroaches were associated with asthma or AR. Indoor chemical sources such as redecoration and new furniture were other risk factors. Cooking with natural gas or biomass and burning mosquito coils and incense were associated with asthma or AR. Frequent cleaning and exposing bedding to sunshine were protective.
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Affiliation(s)
- Juan Wang
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden.
| | - Yinping Zhang
- School of Architecture, Tsinghua University, Beijing, China
| | - Baizhan Li
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Chongqing University, Chongqing, China
| | - Zhuohui Zhao
- Department of Environmental Health, Fudan University, Shanghai, China
| | - Chen Huang
- Department of Building Environment and Energy Engineering, School of environment and Architecture, University of Shanghai for Science and Technology, Shanghai, China
| | - Xin Zhang
- Research Center for Environmental Science and Engineering, Shanxi University, Taiyuan, China
| | - Qihong Deng
- Xiangya School of Public Health, Central South University, Changsha, China; School of Energy Science and engineering, Central South University, Changsha, China
| | - Chan Lu
- Xiangya School of Public Health, Central South University, Changsha, China; School of Energy Science and engineering, Central South University, Changsha, China
| | - Hua Qian
- School of Energy Environment, Southeast University, Nanjing, China
| | - Xu Yang
- College of Life Sciences, Central China Normal University, Wuhan, China
| | - Yuexia Sun
- School of Environmental Science and Engineering, Tianjin University, Tianjin, China
| | - Jan Sundell
- School of Environmental Science and Engineering, Tianjin University, Tianjin, China
| | - Dan Norbäck
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
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Feltman DM, Moore GP, Beck AF, Siffermann E, Bellieni C, Lantos J. Seeking Normalcy as the Curve Flattens: Ethical Considerations for Pediatricians Managing Collateral Damage of Coronavirus Disease-2019. J Pediatr 2020; 225:233-238. [PMID: 32599031 PMCID: PMC7319624 DOI: 10.1016/j.jpeds.2020.06.067] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 06/03/2020] [Accepted: 06/22/2020] [Indexed: 12/17/2022]
Affiliation(s)
- Dalia M Feltman
- NorthShore University HealthSystem Evanston Hospital, Evanston, IL; University of Chicago Pritzker School of Medicine, Chicago, IL.
| | - Gregory P Moore
- Division of Neonatology, Children's Hospital of Eastern Ontario and The Ottawa Hospital, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Andrew F Beck
- Cincinnati Children's Hospital Medical Center and University of Cincinnati College of Medicine, Cincinnati, OH
| | | | - Carlo Bellieni
- Pediatric Intensive Care Unit, Le Scotte University Hospital, Siena, Italy
| | - John Lantos
- Department of Pediatrics and Children's Mercy Bioethics Center, Children's Mercy Hospital, Kansas City, MO
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24
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Rouadi PW, Idriss SA, Naclerio RM, Peden DB, Ansotegui IJ, Canonica GW, Gonzalez-Diaz SN, Rosario Filho NA, Ivancevich JC, Hellings PW, Murrieta-Aguttes M, Zaitoun FH, Irani C, Karam MR, Bousquet J. Immunopathological features of air pollution and its impact on inflammatory airway diseases (IAD). World Allergy Organ J 2020; 13:100467. [PMID: 33042360 PMCID: PMC7534666 DOI: 10.1016/j.waojou.2020.100467] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 08/31/2020] [Accepted: 09/11/2020] [Indexed: 12/14/2022] Open
Abstract
Air pollution causes significant morbidity and mortality in patients with inflammatory airway diseases (IAD) such as allergic rhinitis (AR), chronic rhinosinusitis (CRS), asthma, and chronic obstructive pulmonary disease (COPD). Oxidative stress in patients with IAD can induce eosinophilic inflammation in the airways, augment atopic allergic sensitization, and increase susceptibility to infection. We reviewed emerging data depicting the involvement of oxidative stress in IAD patients. We evaluated biomarkers, outcome measures and immunopathological alterations across the airway mucosal barrier following exposure, particularly when accentuated by an infectious insult.
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Key Words
- AR, Allergic rhinitis
- Air pollution
- Antioxidant
- COPD, Chronic obstructive pulmonary disease
- CRS, Chronic rhinosinusitis
- DEP, Diesel exhaust particles
- IAD, Inflammatory airway diseases
- IL, Interleukin
- ILC, Innate lymphoid cells
- Inflammatory airway disease
- NOx, Nitrogen oxides
- Oxidative stress biomarkers
- PAH, Polycyclic aromatic hydrocarbons
- PM, Particulate matter
- ROS, Reactive oxygen species
- TBS, Tobacco smoke
- TLR, Toll-like receptors
- Tobacco smoke
- Treg, Regulatory T cell
- VOCs, Volatile organic compounds
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Affiliation(s)
- Philip W. Rouadi
- Department of Otolaryngology-Head and Neck Surgery, Eye and Ear University Hospital, Beirut, Lebanon
| | - Samar A. Idriss
- Department of Otolaryngology-Head and Neck Surgery, Eye and Ear University Hospital, Beirut, Lebanon
| | - Robert M. Naclerio
- Johns Hopkins University Department of Otolaryngology - Head and Neck Surgery, Baltimore, MD, USA
| | - David B. Peden
- UNC Center for Environmental Medicine, Asthma, and Lung Biology, Division of Allergy, Immunology and Rheumatology, Department of Pediatrics UNS School of Medicine, USA
| | - Ignacio J. Ansotegui
- Department of Allergy and Immunology, Hospital Quironsalud Bizkaia, Bilbao, Spain
| | | | - Sandra Nora Gonzalez-Diaz
- University Autonoma de Nuevo Leon Facultad de Medicina y Hospital Universitario U.A.N.L, Monterrey, NL, c.p. 64460, México
| | | | - Juan Carlos Ivancevich
- Faculty of Medicine, Universidad del Salvador, Buenos Aires, Argentina and Head of Allergy and Immunology at the Santa Isabel Clinic, Buenos Aires, Argentina
| | - Peter W. Hellings
- Department of Otorhinolaryngology, University Hospitals Leuven, Leuven, Belgium
- Department of Otorhinolaryngology, Academic Medical Center Amsterdam, The Netherlands - Department Otorhinolaryngology, University Hospital Ghent, Belgium
| | | | - Fares H. Zaitoun
- LAUMC Rizk Hospital, Otolaryngology-Allergy Department, Beirut, Lebanon
| | - Carla Irani
- Department of Internal Medicine and Infectious Diseases, St Joseph University, Hotel Dieu de France Hospital, Beirut, Lebanon
| | - Marilyn R. Karam
- Division of Rheumatology, Allergy and Clinical Immunology, Department of Internal Medicine, American University of Beirut, Beirut, Lebanon
| | - Jean Bousquet
- INSERM U 1168, VIMA: Ageing and Chronic Diseases Epidemiological and Public Health Approaches, Villejuif, France
- University Versailles St-Quentin-en-Yvelines, France
- Allergy-Centre-Charité, Charité–Universitätsmedizin Berlin, Berlin, Germany
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25
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Poole TB, King SP, Suphioglu C. Effectiveness of vacuuming and carpet washing in the removal of the major cat allergen, Fel d 1. Allergy 2020; 75:2694-2695. [PMID: 32383483 DOI: 10.1111/all.14356] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Timothy B. Poole
- NeuroAllergy Research Laboratory (NARL) School of Life and Environmental Science Faculty of Science, Engineering and Built Environment Deakin University Waurn Ponds Vic Australia
| | - Samuel Peter King
- NeuroAllergy Research Laboratory (NARL) School of Life and Environmental Science Faculty of Science, Engineering and Built Environment Deakin University Waurn Ponds Vic Australia
| | - Cenk Suphioglu
- NeuroAllergy Research Laboratory (NARL) School of Life and Environmental Science Faculty of Science, Engineering and Built Environment Deakin University Waurn Ponds Vic Australia
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26
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Allergen profile of rhinitis and asthma among Iraqi patients. CLINICAL EPIDEMIOLOGY AND GLOBAL HEALTH 2020. [DOI: 10.1016/j.cegh.2019.12.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
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27
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Rost J, Muralidharan S, Lee NA. A label-free shotgun proteomics analysis of macadamia nut. Food Res Int 2020; 129:108838. [DOI: 10.1016/j.foodres.2019.108838] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 11/12/2019] [Accepted: 11/18/2019] [Indexed: 12/18/2022]
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28
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Aeroallergen Exposure and Spread in the Modern Era. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY-IN PRACTICE 2019; 6:1835-1842. [PMID: 30390901 DOI: 10.1016/j.jaip.2018.08.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 08/27/2018] [Accepted: 08/27/2018] [Indexed: 01/29/2023]
Abstract
Since the initial discovery of aeroallergens in the 20th century, our understanding of their properties including sources and factors influencing their spread continues to expand. Both habits of daily living and the presence of environmental factors such as exposure to animals or pollution can influence susceptibility to atopic disease. Because relevant allergens may vary in individuals and communities, it is necessary to understand the physical properties of environmental aeroallergens that are associated with clinical disease to explain symptoms and to implement successful integrated interventions. The objective of this review was to present an overview of aeroallergens and the environmental factors influencing their current distribution. Using historical studies along with recent advancements, we will give an up-to-date description of the physical characteristics and aerodynamics of aeroallergens in addition to location, quantities, and timing of exposure.
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29
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Satyaraj E, Wedner HJ, Bousquet J. Keep the cat, change the care pathway: A transformational approach to managing Fel d 1, the major cat allergen. Allergy 2019; 74 Suppl 107:5-17. [PMID: 31498459 PMCID: PMC7156987 DOI: 10.1111/all.14013] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 08/01/2019] [Indexed: 12/22/2022]
Abstract
Background Allergies to cats are the most common animal‐origin allergy, and affect approximately 1 in 5 adults worldwide. The prevalence of allergy to furry animals has been increasing, and allergy to cats is a major risk factor for the development of asthma and rhinitis. The diagnosis of cat allergy is now well established. The exact significance of component‐resolved diagnosis in the diagnosis of cat allergy remains to be fully understood. Allergen avoidance is effective but often has a psychologic impact. Allergen immunotherapy is not well demonstrated. There is a need for innovative approaches to better manage cat allergens. Next‐generation care pathways for asthma and rhinitis will define the place of cat allergen avoidance. Methods and Results This manuscript, based on content presented at the European Academy of Allergy and Clinical Immunology Congress 2019, provides information on the prevalence and impact of cat allergies and the molecular biology of Fel d 1, the major cat allergen. Discussion The authors present the scientific basis of a novel care pathway that utilizes anti‐Fel d 1 IgY antibodies to safely and effectively neutralize Fel d 1 after its production by the cat but before human exposure. Conclusion Efficacy of a feline diet with an egg product ingredient containing anti‐Fel d 1 IgY antibodies was demonstrated in vitro, ex vivo, and in vivo, and further validated by a pilot exposure study involving cat‐allergic human participants.
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Affiliation(s)
| | - Harold James Wedner
- Division of Allergy and Immunology, Department of Medicine Washington University School of Medicine St. Louis MO USA
| | - Jean Bousquet
- University Hospital Montpellier France
- MACVIA‐France Fondation partenariale FMC VIA‐LR Montpellier France
- INSERM U 1168 VIMA: Ageing and Chronic Diseases Epidemiological and Public Health Approaches Villejuif France
- UMR‐S 1168 Université Versailles St‐Quentin‐en‐Yvelines Montigny le Bretonneux France
- Charité, Universitätsmedizin Berlin Humboldt‐Universität zu Berlin Berlin Germany
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30
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Norbäck D, Zhang X, Fan Q, Zhang Z, Zhang Y, Li B, Zhao Z, Huang C, Deng Q, Lu C, Qian H, Yang X, Sun Y, Sundell J, Wang J. Home environment and health: Domestic risk factors for rhinitis, throat symptoms and non-respiratory symptoms among adults across China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 681:320-330. [PMID: 31121396 DOI: 10.1016/j.scitotenv.2019.05.084] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 05/06/2019] [Accepted: 05/07/2019] [Indexed: 05/21/2023]
Abstract
Few studies exist from China on associations between home environment and adult health. We studied associations between home environment factors (other than dampness and mould) and rhinitis, throat and dermal symptoms and headache and fatigue among young parents in six cities across China (N = 36,541). They were recruited as parents from day care centers selected randomly and answered a questionnaire on medical symptoms and the home environment. Odds ratios (OR) were calculated by multilevel logistic regression adjusting for gender, atopy, smoking, home size and dampness/mould. Overall, 4.8% had skin symptoms 3.1% rhinitis, 2.8% eye, 4.1% throat symptoms, 3.0% headache and 13.9% had fatigue (all as weekly symptoms). Redecoration was associated with rhinitis, eye and skin symptoms, headache and fatigue. New furniture was associated with eye, throat and skin symptoms and fatigue. Gas cooking was associated with eye and throat symptoms, headache and fatigue. Biomass cooking was associated with eye and throat symptoms and headache. Burning incense was associated with eye, throat and skin symptoms, headache and fatigue. Presence of cockroaches and mosquitos or flies was associated with all six symptoms. Rats or mice were associated with eye and dermal symptoms. Cat keeping was associated with eye symptoms while dog keepers had less fatigue. Living near major roads was associated with rhinitis, eye, throat and skin symptoms and fatigue. Daily cleaning, a mechanical ventilation system in the kitchen or in the bathroom, living in older buildings and living in less urbanized areas were protective factors. In conclusion, urbanization, traffic exhaust, indoor emissions from redecoration and new furniture, gas cooking and air pollution from burning incense and biomass may cause dermal and mucosal symptoms, headache and fatigue among adults in China. Indoor animals (cats, mice/rats, cockroaches) were other risk factors. Daily cleaning, mechanical ventilation and living in older buildings can be protective.
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Affiliation(s)
- Dan Norbäck
- Institute of Environmental Science, Shanxi University, Taiyuan, China; Department of Medical Sciences, Uppsala University, Uppsala, Sweden.
| | - Xin Zhang
- Institute of Environmental Science, Shanxi University, Taiyuan, China.
| | - Qiannan Fan
- Institute of Environmental Science, Shanxi University, Taiyuan, China
| | - Zefei Zhang
- Institute of Environmental Science, Shanxi University, Taiyuan, China
| | - Yinping Zhang
- School of Architecture, Tsinghua University, Beijing, China
| | - Baizhan Li
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Chongqing University, Chongqing, China
| | - Zhuohui Zhao
- Department of Environmental Health, Fudan University, Shanghai, China
| | - Chen Huang
- Department of Building Environment and Energy Engineering, School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, China
| | - Qihong Deng
- XiangYa School of Public Health, Central South University, Changsha, China; School of Energy Science and Engineering, Central South University, Changsha, China
| | - Chan Lu
- XiangYa School of Public Health, Central South University, Changsha, China; School of Energy Science and Engineering, Central South University, Changsha, China
| | - Hua Qian
- School of Energy & Environment, Southeast University, Nanjing, China
| | - Xu Yang
- College of Life Sciences, Central China Normal University, Wuhan, China
| | - Yuexia Sun
- School of Environmental Science and Engineering, Tianjin University, Tianjin, China
| | - Jan Sundell
- School of Environmental Science and Engineering, Tianjin University, Tianjin, China
| | - Juan Wang
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
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31
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Schaller A, Delmas C, De Blay F. [Allergic respiratory diseases related to mould in the home]. Rev Mal Respir 2019; 36:889-901. [PMID: 31303366 DOI: 10.1016/j.rmr.2018.10.619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Accepted: 10/23/2018] [Indexed: 10/26/2022]
Abstract
Exposure to mould is a potential risk factor for asthma in both adults and children. In adult, the relation between exposure, sensitization and symptoms has been demonstrated in severe asthmatics sensitized to Alternaria. For children, exposure to mould in childhood is a risk factor for asthma in both atopic and non-atopic individuals. Exposure or sensitization to moulds are a risk factor for severe asthma and/or exacerbations in children. There appears to be a causal relationship between exposure and asthma. This link seems less significant in adults. However, in adults mould sensitive asthma seems to determine a phenotype of severe asthma associated with more marked obstructive lung disease. Moulds can stimulate either innate or the acquired immunity. They are responsible for a marked Th2 inflammation leading to more severe asthma. Besides the immunological mechanisms, toxic mechanisms can also intervene. It is therefore not correct to reduce the effect of moulds, particularly in respiratory symptoms, to only allergic mechanisms.
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Affiliation(s)
- A Schaller
- Pôle de pathologie thoracique, service de pneumologie, Nouvel hôpital civil, 1, place de l'hôpital, 67094 Strasbourg cedex, France.
| | - C Delmas
- Pôle de pathologie thoracique, service de pneumologie, Nouvel hôpital civil, 1, place de l'hôpital, 67094 Strasbourg cedex, France
| | - F De Blay
- Pôle de pathologie thoracique, service de pneumologie, Nouvel hôpital civil, 1, place de l'hôpital, 67094 Strasbourg cedex, France; EA 3072, Fédération de médecine translationnelle, FHU OMICARE université de Strasbourg, 67000 Strasbourg, France
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32
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Douglas JA, Archer RS, Alexander SE. Ecological determinants of respiratory health: Examining associations between asthma emergency department visits, diesel particulate matter, and public parks and open space in Los Angeles, California. Prev Med Rep 2019; 14:100855. [PMID: 31024787 PMCID: PMC6475663 DOI: 10.1016/j.pmedr.2019.100855] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 03/18/2019] [Accepted: 03/19/2019] [Indexed: 02/04/2023] Open
Abstract
Los Angeles County (LAC) low-income communities of color experience uneven asthma rates, evidenced by asthma emergency department visits (AEDV). This has partly been attributed to inequitable exposure to diesel particulate matter (DPM). Promisingly, public parks and open space (PPOS) contribute to DPM mitigation. However, low-income communities of color with limited access to PPOS may be deprived of associated public health benefits. Therefore, this novel study investigates the AEDV, DPM, PPOS nexus to address this public health dilemma and inform public policy in at-risk communities. Optimized Hotspot Analysis was used to examine geographic clustering of AEDVs, DPM, and PPOS at the census tract unit of analysis in LAC. Ordinary Least Squares (OLS) regression analysis was used to examine the extent to which DPM and PPOS predict AEDVs. Finally, Geographic Weighted Regression (GWR) was employed to account for spatial dependence in the global OLS model. Optimized Hotspot Analysis confirmed significant clustering of elevated AEDVs and DPM in census tracts with reduced PPOS. After controlling for pertinent demographic characteristics (poverty, children, race/ethnicity), regression analysis confirmed that DPM was significantly positively associated with AEDVs, whereas PPOS was significantly negatively associated with AEDVs. Furthermore, GWR revealed that 71.5% of LACs census tracts would benefit from DPM reductions and 79.4% would benefit from PPOS increases toward redressing AEDVs. This is the first study to identify AEDV reductions in census tracts with higher concentrations of PPOS. Thus, reducing DPM and increasing PPOS may serve to improve asthma outcomes, particularly in low-income communities of color.
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Affiliation(s)
- Jason A. Douglas
- Chapman University, Department of Health Sciences, Crean College of Health and Behavioral Sciences, Orange, CA, United States
| | - Reginald S. Archer
- Tennessee State University, Department of Agricultural and Environmental Sciences, Nashville, TN, United States
| | - Serena E. Alexander
- San José State University, Department of Urban and Regional Planning, San José, CA, United States
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Abstract
PURPOSE OF REVIEW The review provides insight into recent findings on bedroom allergen exposures, primarily focusing on pet, pest, and fungal exposures. RECENT FINDINGS Large-scale studies and improved exposure assessment technologies, including measurement of airborne allergens and of multiple allergens simultaneously, have extended our understanding of indoor allergen exposures and their impact on allergic disease. Practical, streamlined methods for exposure reduction have shown promise in some settings, and potential protective effects of early-life exposures have been further elucidated through the investigation of specific bacterial taxa. Advances in molecular allergology have yielded novel data on sensitization profiles and cross-reactivity. The role of indoor allergen exposures in allergic disease is complex and remains incompletely understood. Advancing our knowledge of various co-exposures, including the environmental and host microbiome, that interact with allergens in early life will be crucial for the development of efficacious interventions to reduce the substantial economic and social burden of allergic diseases including asthma.
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Overlapping Community Compositions of Gut and Fecal Microbiomes in Lab-Reared and Field-Collected German Cockroaches. Appl Environ Microbiol 2018; 84:AEM.01037-18. [PMID: 29959246 PMCID: PMC6102980 DOI: 10.1128/aem.01037-18] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Accepted: 06/22/2018] [Indexed: 02/07/2023] Open
Abstract
German cockroaches, Blattella germanica (Blattodea: Ectobiidae), are human commensals that move freely between food and waste, disseminating bacteria, including potential pathogens, through their feces. However, the relationship between the microbial communities of the cockroach gut and feces is poorly understood. We analyzed the V4 region of the 16S rRNA gene and the V9 region of the 18S rRNA gene by next-generation sequencing (NGS) to compare the bacterial and protist diversities in guts versus feces and males versus females, as well as assess variation across cockroach populations. Cockroaches harbored a diverse array of bacteria, and 80 to 90% of the operational taxonomic units (OTUs) were shared between the feces and gut. Lab-reared and field-collected cockroaches had distinct microbiota, and whereas lab-reared cockroaches had relatively conserved communities, considerable variation was observed in the microbial community composition of cockroaches collected in different apartments. Nonetheless, cockroaches from all locations shared some core bacterial taxa. The eukaryotic community in the feces of field-collected cockroaches was found to be more diverse than that in lab-reared cockroaches. These results demonstrate that cockroaches disseminate their gut microbiome in their feces, and they underscore the important contribution of the cockroach fecal microbiome to the microbial diversity of cockroach-infested homes.IMPORTANCE The German cockroach infests diverse human-built structures, including homes and hospitals. It produces potent allergens that trigger asthma and disseminates opportunistic pathogens in its feces. A comprehensive understanding of gut and fecal microbial communities of cockroaches is essential not only to understand their contribution to the biology of the cockroach, but also for exploring their clinical relevance. In this study, we compare the diversity of bacteria and eukaryotes in the cockroach gut and feces and assess the variation in the gut microbiota across cockroach populations.
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Machelart A, Potemberg G, Van Maele L, Demars A, Lagneaux M, De Trez C, Sabatel C, Bureau F, De Prins S, Percier P, Denis O, Jurion F, Romano M, Vanderwinden JM, Letesson JJ, Muraille E. Allergic Asthma Favors Brucella Growth in the Lungs of Infected Mice. Front Immunol 2018; 9:1856. [PMID: 30147700 PMCID: PMC6095999 DOI: 10.3389/fimmu.2018.01856] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Accepted: 07/27/2018] [Indexed: 12/12/2022] Open
Abstract
Allergic asthma is a chronic Th2 inflammatory disease of the lower airways affecting a growing number of people worldwide. The impact of infections and microbiota composition on allergic asthma has been investigated frequently. Until now, however, there have been few attempts to investigate the impact of asthma on the control of infectious microorganisms and the underlying mechanisms. In this work, we characterize the consequences of allergic asthma on intranasal (i.n.) infection by Brucella bacteria in mice. We observed that i.n. sensitization with extracts of the house dust mite Dermatophagoides farinae or the mold Alternaria alternata (Alt) significantly increased the number of Brucella melitensis, Brucella suis, and Brucella abortus in the lungs of infected mice. Microscopic analysis showed dense aggregates of infected cells composed mainly of alveolar macrophages (CD11c+ F4/80+ MHCII+) surrounded by neutrophils (Ly-6G+). Asthma-induced Brucella susceptibility appears to be dependent on CD4+ T cells, the IL-4/STAT6 signaling pathway and IL-10, and is maintained in IL-12- and IFN-γR-deficient mice. The effects of the Alt sensitization protocol were also tested on Streptococcus pneumoniae and Mycobacterium tuberculosis pulmonary infections. Surprisingly, we observed that Alt sensitization strongly increases the survival of S. pneumoniae infected mice by a T cell and STAT6 independent signaling pathway. In contrast, the course of M. tuberculosis infection is not affected in the lungs of sensitized mice. Our work demonstrates that the impact of the same allergic sensitization protocol can be neutral, negative, or positive with regard to the resistance of mice to bacterial infection, depending on the bacterial species.
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Affiliation(s)
- Arnaud Machelart
- Unité de Recherche en Biologie des Microorganismes, Laboratoire d’Immunologie et de Microbiologie, NAmur Research Institute for Life Sciences (NARILIS), Université de Namur, Namur, Belgium
| | - Georges Potemberg
- Unité de Recherche en Biologie des Microorganismes, Laboratoire d’Immunologie et de Microbiologie, NAmur Research Institute for Life Sciences (NARILIS), Université de Namur, Namur, Belgium
| | - Laurye Van Maele
- Institute for Medical Immunology, Université Libre de Bruxelles, Brussels, Belgium
| | - Aurore Demars
- Unité de Recherche en Biologie des Microorganismes, Laboratoire d’Immunologie et de Microbiologie, NAmur Research Institute for Life Sciences (NARILIS), Université de Namur, Namur, Belgium
| | - Maxime Lagneaux
- Unité de Recherche en Biologie des Microorganismes, Laboratoire d’Immunologie et de Microbiologie, NAmur Research Institute for Life Sciences (NARILIS), Université de Namur, Namur, Belgium
| | - Carl De Trez
- Department of Molecular and Cellular Interactions, Vlaams Interuniversitair Instituut voor Biotechnologie, Vrije Universiteit Brussel, Brussels, Belgium
| | - Catherine Sabatel
- Laboratory of Cellular and Molecular Immunology, GIGA- Research & WELBIO, University of Liège, Liège, Belgium
| | - Fabrice Bureau
- Laboratory of Cellular and Molecular Immunology, GIGA- Research & WELBIO, University of Liège, Liège, Belgium
| | - Sofie De Prins
- Immunology Unit, Scientific Institute for Public Health (WIV-ISP), Brussels, Belgium
| | - Pauline Percier
- Immunology Unit, Scientific Institute for Public Health (WIV-ISP), Brussels, Belgium
| | - Olivier Denis
- Immunology Unit, Scientific Institute for Public Health (WIV-ISP), Brussels, Belgium
| | - Fabienne Jurion
- Immunology Unit, Scientific Institute for Public Health (WIV-ISP), Brussels, Belgium
| | - Marta Romano
- Immunology Unit, Scientific Institute for Public Health (WIV-ISP), Brussels, Belgium
| | | | - Jean-Jacques Letesson
- Unité de Recherche en Biologie des Microorganismes, Laboratoire d’Immunologie et de Microbiologie, NAmur Research Institute for Life Sciences (NARILIS), Université de Namur, Namur, Belgium
| | - Eric Muraille
- Unité de Recherche en Biologie des Microorganismes, Laboratoire d’Immunologie et de Microbiologie, NAmur Research Institute for Life Sciences (NARILIS), Université de Namur, Namur, Belgium
- Laboratoire de Parasitologie, Faculté de Médecine, Université Libre de Bruxelles, Brussels, Belgium
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Wojtalewicz N, Kabrodt K, Goseberg S, Schellenberg I. Evaluation of the manufacturer-dependent differences in specific immunoglobulin E results for indoor allergens. Ann Allergy Asthma Immunol 2018; 121:490-495. [PMID: 30025909 DOI: 10.1016/j.anai.2018.07.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 07/09/2018] [Accepted: 07/10/2018] [Indexed: 11/16/2022]
Abstract
BACKGROUND Even though allergies are an important health issue, the detected amount of allergen-specific IgE (sIgE) has differed widely between manufacturers in the past, and even as recently as this year. These discrepancies hinder diagnostics and can even impact allergen immunotherapy. OBJECTIVE The aim of this study was to evaluate the development and status quo of the quality of in vitro diagnostic testing for house dust mites (HDM) and cat epithelium, 2 important indoor allergen sources. METHODS We analyzed data on the allergen sources European HDM, American HDM, and cat epithelium, which were collected by the Society for Promoting Quality Assurance in Medical Laboratories (INSTAND e.V.) during 7 years as part of External Quality Assessment schemes (EQAs). A pseudoanonymized comparison was made of the semiquantitative data and allergen-class results of the 4 main suppliers of in vitro diagnostic sIgE tests. Coefficients of variation (CV) were determined in order to evaluate interlaboratory comparability. RESULTS In vitro allergy diagnostic testing for the major allergen sources HDM and cat epithelium still reveals manufacturer-dependent differences. Despite this, a cautious trend was found towards an alignment of the results and interlaboratory comparability, with the exception of 1 supplier. CONCLUSION Even though these results are promising, future EQAs have to be closely monitored to ensure this positive trend is not just a snapshot.
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Affiliation(s)
- Nathalie Wojtalewicz
- INSTAND e.V., Society for Promoting Quality Assurance in Medical Laboratories, Düsseldorf, Germany
| | - Kathrin Kabrodt
- Institute of Bioanalytical Sciences (IBAS), Center of Life Sciences, Anhalt University of Applied Sciences, Bernburg, Germany
| | - Sabine Goseberg
- INSTAND e.V., Society for Promoting Quality Assurance in Medical Laboratories, Düsseldorf, Germany
| | - Ingo Schellenberg
- INSTAND e.V., Society for Promoting Quality Assurance in Medical Laboratories, Düsseldorf, Germany; Institute of Bioanalytical Sciences (IBAS), Center of Life Sciences, Anhalt University of Applied Sciences, Bernburg, Germany.
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Buczinski S, Borris ME, Dubuc J. Herd-level prevalence of the ultrasonographic lung lesions associated with bovine respiratory disease and related environmental risk factors. J Dairy Sci 2017; 101:2423-2432. [PMID: 29290447 DOI: 10.3168/jds.2017-13459] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Accepted: 11/11/2017] [Indexed: 11/19/2022]
Abstract
Bovine respiratory disease complex (BRD) is a major calf disease during the preweaning period. Thoracic ultrasound (TUS) has been recently described as a reliable tool for assessing BRD-associated lung lesions. The objectives of this study were to define the herd-level prevalence of lung consolidation assessed by TUS (CONSTUS). A total of 39 Québec dairy herds were randomly chosen to participate in this cross-sectional study. Between 6 and 12 preweaned calves were examined for signs of CONSTUS defined by any site with ≥3 cm consolidated lung tissue during 1 visit in summer and 1 visit in winter. Herd questionnaire focused on calf health and housing data [airborne bacteria (aerobic, coliform, yeasts and mold counts), air drafts, temperature, hygrometry, and ammonia levels] were also collected during these visits looking for potential association with CONSTUS prevalence. The median herd-level of CONSTUS prevalence (interquartile range) were 8% (0-22%) in summer and 15% (0-35%) in winter. Multivariable analyses showed that season was associated with an increased CONSTUS prevalence [10.0 vs. 19.3%; odds ratio (OR) = 2.16], as well as group housing during preweaned period (9.6 vs. 20.0%; OR = 2.37) and perceived BRD problem by the farmer (10.6 vs. 18.3%; OR = 1.89). Despite tremendous changes in calves' environment between winter and summer, none of the housing variables were associated with the CONSTUS prevalence in this study. Based on the observed CONSTUS prevalence ranges in the present study (herds in the lower prevalence quartile), an achievable goal of none of 12 calves with consolidation ≥3 cm can potentially be used to define a low-BRD risk herd.
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Affiliation(s)
- S Buczinski
- Département des Sciences Cliniques, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe J2S 2M2, Québec, Canada.
| | - M E Borris
- Département des Sciences Cliniques, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe J2S 2M2, Québec, Canada
| | - J Dubuc
- Département des Sciences Cliniques, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe J2S 2M2, Québec, Canada
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Abstract
The Hedgehog (Hh) signaling pathway plays an essential role in the growth, development, and homeostatis of many tissues in vertebrates and invertebrates. Much of what is known about Hh signaling is in the context of embryonic development and tumor formation. However, a growing body of evidence is emerging indicating that Hh signaling is also involved in postnatal processes such as tissue repair and adult immune responses. To that extent, Hh signaling has also been shown to be a target for some pathogens that presumably utilize the pathway to control the local infected environment. In this review, we discuss what is currently known regarding pathogenic interactions with Hh signaling and speculate on the reasons for this pathway being a target. We also hope to shed light on the possibility of using small molecule modulators of Hh signaling as effective therapies for a wider range of human diseases beyond their current use in a limited number of cancers.
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Bordas-Le Floch V, Le Mignon M, Bussières L, Jain K, Martelet A, Baron-Bodo V, Nony E, Mascarell L, Moingeon P. A combined transcriptome and proteome analysis extends the allergome of house dust mite Dermatophagoides species. PLoS One 2017; 12:e0185830. [PMID: 28982170 PMCID: PMC5628879 DOI: 10.1371/journal.pone.0185830] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 09/20/2017] [Indexed: 02/07/2023] Open
Abstract
Background House dust mites (HDMs) such as Dermatophagoides farinae and D. pteronyssinus represent major causes of perennial allergy. HDM proteomes are currently poorly characterized, with information mostly restricted to allergens. As of today, 33 distinct allergen groups have been identified for these 2 mite species, with groups 1 and 2 established as major allergens. Given the multiplicity of IgE-reactive mite proteins, potential additional allergens have likely been overlooked. Objective To perform a comprehensive characterization of the transcriptomes, proteomes and allergomes of D. farinae and D. pteronyssinus in order to identify novel allergens. Methods Transcriptomes were analyzed by RNA sequencing and de novo assembly. Comprehensive mass spectrometry-based analyses proteomes were combined with two-dimensional IgE reactivity profiling. Results Transcripts from D. farinae and D. pteronyssinus were assembled, translated into protein sequences and used to populate derived sequence databases in order to inform immunoproteomic analyses. A total of 527 and 157 proteins were identified by bottom-up MS analyses in aqueous extracts from purified HDM bodies and fecal pellets, respectively. Based on high sequence similarities (>71% identity), we also identified 2 partial and 11 complete putative sequences of currently undisclosed D. pteronyssinus counterparts of D. farinae registered allergens. Immunoprofiling on 2D-gels revealed the presence of unknown 23 kDa IgE reactive proteins in both species. Following expression of non-glycosylated recombinant forms of these molecules, we confirm that these new allergens react with serum IgEs from 42% (8/19) of HDM-allergic individuals. Conclusions Using combined transcriptome and immunoproteome approaches, we provide a comprehensive characterization of D. farinae and D. pteronyssinus allergomes. We expanded the known allergen repertoire for D. pteronyssinus and identified two novel HDM allergens, now officially referred by the International Union of Immunological Societies (IUIS) Nomenclature Subcommittee as Der f 36 and Der p 36.
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Zahradnik E, Raulf M. Respiratory Allergens from Furred Mammals: Environmental and Occupational Exposure. Vet Sci 2017; 4:vetsci4030038. [PMID: 29056697 PMCID: PMC5644656 DOI: 10.3390/vetsci4030038] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 07/31/2017] [Accepted: 08/01/2017] [Indexed: 12/21/2022] Open
Abstract
Furry mammals kept as pets, farm and laboratory animals are important allergen sources. The prevalence of sensitization to furred mammals appears to be increasing worldwide. Several mammalian allergens from diverse species are well characterized with regard to their molecular structure and immunogenicity, and some are already available for component-resolved allergy diagnostics. The distribution of various mammalian allergens has been extensively studied during the past few decades. Animal allergens were found to be ubiquitous in the human environment, even in places where no animals reside, with concentrations differing considerably between locations and geographical regions. This review presents an overview of identified mammalian respiratory allergens classified according to protein families, and compiles the results of allergen exposure assessment studies conducted in different public and occupational environments.
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Affiliation(s)
- Eva Zahradnik
- Center of Allergology/Immunology, Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-Universität Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789 Bochum, Germany.
| | - Monika Raulf
- Center of Allergology/Immunology, Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-Universität Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789 Bochum, Germany.
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41
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Abstract
Furry mammals kept as pets, farm and laboratory animals are important allergen sources. The prevalence of sensitization to furred mammals appears to be increasing worldwide. Several mammalian allergens from diverse species are well characterized with regard to their molecular structure and immunogenicity, and some are already available for component-resolved allergy diagnostics. The distribution of various mammalian allergens has been extensively studied during the past few decades. Animal allergens were found to be ubiquitous in the human environment, even in places where no animals reside, with concentrations differing considerably between locations and geographical regions. This review presents an overview of identified mammalian respiratory allergens classified according to protein families, and compiles the results of allergen exposure assessment studies conducted in different public and occupational environments.
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Lin S, Lawrence WR, Lin Z, Francois M, Neamtiu IA, Lin Q, Csobod E, Gurzau ES. Teacher respiratory health symptoms in relation to school and home environment. Int Arch Occup Environ Health 2017; 90:725-739. [PMID: 28600748 DOI: 10.1007/s00420-017-1235-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 05/30/2017] [Indexed: 11/29/2022]
Abstract
PURPOSE Few studies have evaluated teachers' respiratory health, especially its relationship with school/home environment, and school policies. This study assessed asthma and smoking prevalence among teachers in Romania, teacher's perception and knowledge of the school environment, policies and asthma management, and how school and home environment affected asthma, allergy, and respiratory infection symptoms. METHODS This cross-sectional study obtained information from 104 Romanian teachers utilizing teacher questionnaire data for Romania only, as part of the Schools Indoor Pollution and Health: Observatory Network in Europe (SINPHONIE) study, a multicenter European research project conducted between 2010 and 2012. The SINPHONIE questionnaire collected comprehensive information on school and home environment, respiratory symptoms, smoking, and school policies. We used unconditional logistic regression analysis to examine environment-outcome relationships while controlling for socio-demographics and co-exposures. RESULTS Our results showed the prevalence of asthma-like symptoms and smoking among teachers in Romania was higher than in other SINPHONIE schools and among US teachers. Factors statistically associated with asthma, allergy, and respiratory infection (all p < 0.05) include perception of health related to poor air quality in school, inappropriate cleaning of ventilation systems, dwelling proximity to busy traffic, and multiple school/home exposures. We also found lack of asthma management and environmental policies in the investigated Romanian schools. CONCLUSION We concluded that multiple school and home environmental factors were related to respiratory and allergic symptoms. High asthma burden and smoking are important public health problems in Romania. Future studies including larger sample size and exposure measurements are needed to confirm our findings.
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Affiliation(s)
- Shao Lin
- Department of Environmental Health Science, School of Public Health, University at Albany, State University of New York, 1 University Place, Rensselaer, NY, 12144, USA
- Department of Epidemiology and Biostatistics, School of Public Health, University at Albany, State University of New York, 1 University Place, Rensselaer, NY, 12144, USA
| | - Wayne R Lawrence
- Department of Epidemiology and Biostatistics, School of Public Health, University at Albany, State University of New York, 1 University Place, Rensselaer, NY, 12144, USA
| | - Ziqiang Lin
- Department of Environmental Health Science, School of Public Health, University at Albany, State University of New York, 1 University Place, Rensselaer, NY, 12144, USA
- Department of Mathematics and Statistics, College of Arts and Sciences, University at Albany, State University of New York, 1400 Washington Avenue, Albany, NY, 12222, USA
| | - Melissa Francois
- Department of Biomedical Sciences, School of Public Health, University at Albany, State University of New York, 1 University Place, Rensselaer, NY, 12144, USA
| | - Iulia A Neamtiu
- Health Department, Environmental Health Center, 58 Busuiocului Street, Cluj Napoca, Romania
- Faculty of Environmental Science and Engineering, Babes-Bolyai University, 30 Fantanele Street, Cluj Napoca, Romania
| | - Qiaoxuan Lin
- Department of Environmental Health Science, School of Public Health, University at Albany, State University of New York, 1 University Place, Rensselaer, NY, 12144, USA
- Department of Epidemiology and Biostatistics, School of Medicine, University of Jinan, 510632, Guangzhou, China
| | - Eva Csobod
- Regional Environmental Center for Central and Eastern Europe (REC), Ady Endre ut 9-11, 2000, Szentendre, Hungary
| | - Eugen S Gurzau
- Health Department, Environmental Health Center, 58 Busuiocului Street, Cluj Napoca, Romania.
- Cluj School of Public Health-College of Political, Administrative and Communication Sciences, Babes-Bolyai University, Cluj Napoca, Romania.
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Mental Health in Allergic Rhinitis: Depression and Suicidal Behavior. CURRENT TREATMENT OPTIONS IN ALLERGY 2017; 4:71-97. [PMID: 28966902 DOI: 10.1007/s40521-017-0110-z] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A high proportion of suicides visit their medical provider in the month prior to death, but depression, suicidal thoughts, and substance use are seldom addressed. For the clinicians routinely treating a substantial patient population with allergic diseases, there are additional concerns, as allergy has been linked with both depression and suicidal behavior. While psychotropic medications may affect diagnosis of allergies, medications used to treat allergies impact mood and behavior. Thus, we present an overview of the overlap of allergic rhinitis with depression and suicidal behavior in adults, based on clinical and epidemiological data, and our research and clinical experience. In summary, we suggest: 1) inquiring among patients with allergies about personal and family history of depression, substance use disorders, suicidal ideation and attempts 2) increased mindfulness regarding the potential effects of allergy medications on mood and behavior; and 3) for people identified with certain types of depression or increased suicide risk, a systematic multilevel collaborative approach. While for practical reasons the majority of patients with depression will continue to be treated by general or family practitioners, the allergy-treating provider should always consider integrated care for bipolar, psychotic or suicidal depression and incomplete remission, or relapsing and highly recurrent course. While awaiting results of much needed basic and clinical research to guide clinical approach for patients with comorbid allergic rhinitis and depression, the simple steps recommended here are expected to improved clinical outcomes in depression, including, on a large scale, reduced premature deaths by suicide.
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Standing ASI, Yánez DC, Ross R, Crompton T, Furmanski AL. Frontline Science: Shh production and Gli signaling is activated in vivo in lung, enhancing the Th2 response during a murine model of allergic asthma. J Leukoc Biol 2017; 102:965-976. [PMID: 28235772 PMCID: PMC5597515 DOI: 10.1189/jlb.3hi1016-438rr] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 01/23/2017] [Accepted: 02/05/2017] [Indexed: 12/12/2022] Open
Abstract
Hh/Gli signals are received by multiple pulmonary and immune cell types in response to allergen inhalation in vivo; this autocrine/paracrine activation enhances Th2 immune responses. The pathophysiology of allergic asthma is driven by Th2 immune responses after aeroallergen inhalation. The mechanisms that initiate, potentiate, and regulate airway allergy are incompletely characterized. We have shown that Hh signaling to T cells, via downstream Gli transcription factors, enhances T cell conversion to a Th2 phenotype. In this study, we showed for the first time, to our knowledge, that Gli-dependent transcription is activated in T cells in vivo during murine AAD, a model for the immunopathology of asthma, and that genetic repression of Gli signaling in T cells decreases the differentiation and recruitment of Th2 cells to the lung. T cells were not the only cells that expressed activated Gli during AAD. A substantial proportion of eosinophils and lung epithelial cells, both central mediators of the immunopathology of asthma, also underwent Hh/Gli signaling. Finally, Shh increased Il-4 expression in eosinophils. We therefore propose that Hh signaling during AAD is complex, involving multiple cell types, signaling in an auto- or paracrine fashion. Improved understanding of the role of this major morphogenetic pathway in asthma may give rise to new drug targets for this chronic condition.
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Affiliation(s)
| | - Diana C Yánez
- Immunobiology Section, UCL Great Ormond Street Institute of Child Health, London, UK
| | - Rosie Ross
- School of Life Sciences, University of Bedfordshire, Luton, UK; and
| | - Tessa Crompton
- Immunobiology Section, UCL Great Ormond Street Institute of Child Health, London, UK
| | - Anna L Furmanski
- School of Life Sciences, University of Bedfordshire, Luton, UK; and.,Immunobiology Section, UCL Great Ormond Street Institute of Child Health, London, UK
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Stemeseder T, Schweidler B, Doppler P, Klinglmayr E, Moser S, Lueftenegger L, Himly M, Lang R, Zumbach J, Oostingh GJ, Hawranek T, Bathke AC, Gadermaier G. Exposure to Indoor Allergens in Different Residential Settings and Its Influence on IgE Sensitization in a Geographically Confined Austrian Cohort. PLoS One 2017; 12:e0168686. [PMID: 28045938 PMCID: PMC5207653 DOI: 10.1371/journal.pone.0168686] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 12/05/2016] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Exposure to indoor allergens is crucial for IgE sensitization and development of allergic symptoms. Residential settings influence the allergen amount in house dust and hence allergic sensitization. Within this study, we investigated allergen exposure and molecule-based IgE levels in a geographically confined region and evaluated the impact of housing, pets and cleaning. METHODS 501 adolescents from Salzburg, Austria participated in this cross-sectional study. House dust samples were examined regarding major mite, cat, dog, and mold allergens using a multiplex assay. Serum samples of participants were analyzed for specific IgE to Der p 1, Der p 2, Fel d 1, Can f 1 and Alt a 1 using the multiplex array ImmunoCAP ISAC. Information on allergies, living areas, dwelling form (house, flat, farm), pets, and household cleanliness were obtained by a questionnaire. RESULTS In investigated house dust samples, the concentration of cat allergen was highest while the prevalence of mold allergens was very low. Participants showed IgE sensitization to Der p 1 (13.2%), Der p 2 (18.2%), Fel d 1 (14.4%), Can f 1 (2.4%) and Alt a 1 (2.0%). In alpine regions, lower mite allergen concentrations were detected which correlated with reduced IgE levels. A trend for increased sensitization prevalence from rural to alpine to urban regions was noted. Living on farms resulted in lower sensitization prevalence to mite and cat allergens, even though exposure to mites was significantly elevated. The presence of cats was associated with a lower sensitization rate and IgE levels to cat and mite allergens, and less frequent allergic diseases. Cleaning did not impact allergen concentrations, while IgE reactivity to mites and allergic diseases were more pronounced when living in cleaner homes. CONCLUSION Allergen exposure to indoor allergens was influenced by setting of homes. Living in a farm environment and having a cat at home showed a protective effect for IgE sensitization and allergies. This cross-sectional study in combination with hereditary and lifestyle factors enables development of risk schemes for a more efficient management and potential prevention of allergic diseases.
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Affiliation(s)
- Teresa Stemeseder
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Bettina Schweidler
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Patrick Doppler
- Department of Mathematics, University of Salzburg, Salzburg, Austria
| | - Eva Klinglmayr
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Stephanie Moser
- School of Education, University of Salzburg, Salzburg, Austria
- TUM School of Education, Technical University of Munich, Munich, Germany
| | - Lisa Lueftenegger
- Department of Dermatology, Paracelsus Medical University Salzburg, Salzburg, Austria
- Biomedical Sciences, Salzburg University of Applied Sciences, Puch/Salzburg, Austria
| | - Martin Himly
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Roland Lang
- Department of Dermatology, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Joerg Zumbach
- Department of Mathematics, University of Salzburg, Salzburg, Austria
| | - Gertie J. Oostingh
- Biomedical Sciences, Salzburg University of Applied Sciences, Puch/Salzburg, Austria
| | - Thomas Hawranek
- Department of Dermatology, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Arne C. Bathke
- Department of Mathematics, University of Salzburg, Salzburg, Austria
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