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Ye F, He G, Gan H. Relationship between indoor inhalant allergen concentrations, serum IgE, and allergic diseases: A cross-sectional study from the NHANES 2005-2006 program. World Allergy Organ J 2024; 17:100866. [PMID: 38283080 PMCID: PMC10811456 DOI: 10.1016/j.waojou.2023.100866] [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: 10/16/2023] [Revised: 12/12/2023] [Accepted: 12/21/2023] [Indexed: 01/30/2024] Open
Abstract
This research analyzed data from 5106 participants in the National Health and Nutrition Examination Survey 2005-2006 to explore the link between indoor allergen concentrations, serum IgE levels, and allergic diseases. The study found that 14.9% of participants reported having asthma, with significant differences noted in the concentrations of certain indoor allergens, specifically dust dog, mite, and cat allergens, between asthma and non-asthma groups. Furthermore, positivity rates for inhalant allergen-specific IgE and total IgE were higher in the asthma group. However, the correlations between most inhalant allergen IgE, including total IgE, and indoor allergen concentrations were very weak. These findings suggest that the relationship between indoor allergen concentrations and asthma incidence is complex, indicating a potential need for personalized allergen prevention strategies based on disease type and patient sensitization.
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Affiliation(s)
- Fei Ye
- Otolaryngology Department of Huangpu People's Hospital of Zhongshan, Allergy Department/Otolaryngology Head and Neck Surgery Department of Zhongshan City People's Hospital, China
| | - Gongkai He
- Xinxiang Medical University, Zhongshan City People's Hospital, China
| | - Hui Gan
- Department of Clinical Laboratory, National Center for Respiratory Medicine, National Clinical Research Center for Respiratory Disease, State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University (The Key Laboratory of Advanced Interdisciplinary Studies Center, Advanced Interdisciplinary Studies Center), Guangzhou, China
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Grant TL, Wood RA, Chapman MD. Indoor Environmental Exposures and Their Relationship to Allergic Diseases. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY. IN PRACTICE 2023; 11:2963-2970. [PMID: 37652348 PMCID: PMC10927277 DOI: 10.1016/j.jaip.2023.08.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 08/23/2023] [Accepted: 08/23/2023] [Indexed: 09/02/2023]
Abstract
Cockroach, dust mite, cat, dog, mouse, and molds are major indoor allergens that have been associated with the development of allergic diseases and disease morbidity in allergen-sensitized individuals. Physical characteristics, such as allergen particle size, hydrophobicity, and charge, can determine an allergen's propensity to become airborne, location of respiratory tract penetration, and ability to elicit IgE responses in genetically predisposed individuals. Standardization and recent advancements in indoor allergen assessment serve to identify sources and distribution of allergens in a patient's home and public environment, inform public policy, and monitor the efficacy of allergen avoidance and therapeutics. Allergen exposure interventions have yielded mixed results with current US and international asthma guidelines differing on recommendations. A pragmatic, patient-centered approach to allergen avoidance includes: (1) tailoring intervention to the patient's sensitization and exposure status, (2) using a rigorous multifaceted intervention strategy to reduce allergen exposure as much as possible, and (3) beginning the intervention as soon as the patient is diagnosed. Further research into the risks/benefits of early allergen exposure, rapid and affordable in-home allergen assessment, and best practices for environmental control measures for asthma is needed.
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Affiliation(s)
- Torie L Grant
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Md.
| | - Robert A Wood
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Md
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Galván-Morales MÁ. Perspectives of Proteomics in Respiratory Allergic Diseases. Int J Mol Sci 2023; 24:12924. [PMID: 37629105 PMCID: PMC10454482 DOI: 10.3390/ijms241612924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 07/18/2023] [Accepted: 07/27/2023] [Indexed: 08/27/2023] Open
Abstract
Proteomics in respiratory allergic diseases has such a battery of techniques and programs that one would almost think there is nothing impossible to find, invent or mold. All the resources that we document here are involved in solving problems in allergic diseases, both diagnostic and prognostic treatment, and immunotherapy development. The main perspectives, according to this version, are in three strands and/or a lockout immunological system: (1) Blocking the diapedesis of the cells involved, (2) Modifications and blocking of paratopes and epitopes being understood by modifications to antibodies, antagonisms, or blocking them, and (3) Blocking FcεRI high-affinity receptors to prevent specific IgEs from sticking to mast cells and basophils. These tools and targets in the allergic landscape are, in our view, the prospects in the field. However, there are still many allergens to identify, including some homologies between allergens and cross-reactions, through the identification of structures and epitopes. The current vision of using proteomics for this purpose remains a constant; this is also true for the basis of diagnostic and controlled systems for immunotherapy. Ours is an open proposal to use this vision for treatment.
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Affiliation(s)
- Miguel Ángel Galván-Morales
- Departamento de Atención a la Salud, CBS. Unidad Xochimilco, Universidad Autónoma Metropolitana, Calzada del Hueso 1100, Villa Quietud, Coyoacán, Ciudad de México 04960, Mexico
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Alreshidi NM, Livesley J, Al-Kalaldeh M, Long T. The Impact of a School-based, Nurse-delivered Asthma Health Education Program on Quality of Life, Knowledge, and Attitudes of Saudi Children with Asthma. Compr Child Adolesc Nurs 2020; 45:1-15. [PMID: 33021848 DOI: 10.1080/24694193.2020.1824033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 09/11/2020] [Indexed: 10/23/2022]
Abstract
More than two million people have asthma in Saudi Arabia: 13% aged 6-10 years. Asthma is one of the most common childhood illnesses. Little has been explored about children's ability to learn more about their own asthma in Saudi Arabia. The study was designed to assess the impact of a school-based, nurse-delivered asthma health education program on asthmatic children's knowledge and attitude toward asthma, quality of life, anxiety level, and school absenteeism. A quasi-experimental, non-equivalent group, pretest-posttest design was used. The education program was developed from existing evidence. The Pediatric Asthma Quality of Life Questionnaire, Spence Anxiety Tool, Asthma Knowledge Questionnaire, and Asthma Attitude Questionnaire were employed for data collection. Intervention (n = 130) and control (n = 98) groups were drawn from 10 schools in Ha'il region, Saudi Arabia. Descriptive and inferential statistics were used to examine differences within and between groups. Knowledge of asthma increased significantly more in the intervention group than in the control group. Attitude toward asthma was not changed by the intervention. Anxiety scores reverted to pretest level by posttest II. The intervention group had significantly better total quality of life scores than the control group, and school absenteeism reduced significantly after the delivery of the program. It was concluded that the asthma education program impacted positively on students' knowledge, quality of life, and school attendance. However, asthma education did not change attitudes toward the condition, and the impact on anxiety was not persistent. The results emphasize the benefits of the provision of health education directly to children. Asthma education should be integrated into the Saudi national child health program.
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Affiliation(s)
- Nashi Masnad Alreshidi
- Department of Continuing Education, Nursing Administration in Hail Region, Hail City, Saudi Arabia
| | - Joan Livesley
- School of Health & Society, University of Salford, Salford, UK
| | | | - Tony Long
- Department of Continuing Education, Nursing Administration in Hail Region, Hail City, Saudi Arabia
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Reduction in mouse allergen exposure is associated with greater lung function growth. J Allergy Clin Immunol 2019; 145:646-653.e1. [PMID: 31866099 DOI: 10.1016/j.jaci.2019.08.043] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 07/18/2019] [Accepted: 08/12/2019] [Indexed: 11/20/2022]
Abstract
BACKGROUND Current childhood asthma therapies have little effect on lung function trajectory. OBJECTIVE We sought to determine whether mouse allergen exposure reduction is associated with lung function growth in mouse-sensitized/exposed asthmatic children. METHODS Three hundred fifty mouse-sensitized/exposed asthmatic children (5-17 years old) were enrolled in a 1-year randomized trial of integrated pest management plus education versus education alone. Prebronchodilator/postbronchodilator spirometry was performed at baseline and 6 and 12 months, and bedroom floor mouse allergen levels were measured every 3 months. Mouse allergen reduction was defined as a 75% or greater decrease in mouse allergen levels from baseline. Treatment groups were combined for analyses because there were no differences in outcomes between groups. Changes in lung function over time were modeled, adjusting for age, sex, race, atopy, group, and bronchodilator reversibility and including an interaction term (allergen reduction*time). RESULTS The study population was predominantly black (79.4%) and low income (66.3% [<$30,000]). At baseline, the median mouse allergen level was 5.7 μg/g (interquartile range, 1.5-22.8 μg/g), and the mean (SD) prebronchodilator FEV1/forced vital capacity ratio was 80.2% (9.0%). Ninety-two (26.3%) participants had 75% or greater reduction in mouse allergen levels. For a 10-year-old black boy, 75% or greater allergen reduction was associated with an increase in prebronchodilator FEV1 of 238 mL/y (95% CI, 177-299 mL/y), whereas less than 75% allergen reduction was associated with an increase in prebronchodilator FEV1 of 131 mL/y (95% CI, 97-166 mL/y). Estimated differences in prebronchodilator and postbronchodilator FEV1 growth were as follows: 107 mL/y (95% CI, 37-177 mL/y; Pint = .003) and 48 mL/y (95% CI, -17 to 113 mL/y; Pint = .15), respectively. Estimated differences in prebronchodilator and postbronchodilator forced expiratory flow at 25% to 75% of vital capacity growth were as follows: 182 mL/y (95% CI, 61-304 mL/y; Pint = .003) and 181 mL/y (95% CI, 48-314 mL/y; Pint = .008), respectively. CONCLUSION Mouse allergen reduction is associated with greater increases in prebronchodilator FEV1 and prebronchodilator/postbronchodilator forced expiratory flow at 25% to 75% of vital capacity over 1 year among sensitized/exposed asthmatic children.
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Grant T, Rule AM, Koehler K, Wood RA, Matsui EC. Sampling Devices for Indoor Allergen Exposure: Pros and Cons. Curr Allergy Asthma Rep 2019; 19:9. [PMID: 30747291 PMCID: PMC10371220 DOI: 10.1007/s11882-019-0833-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
PURPOSE OF REVIEW To review current indoor allergen sampling devices, including devices to measure allergen in reservoir and airborne dust, and personal sampling devices, with attention to sampling rationale and major indoor allergen size and characteristics. RECENT FINDINGS While reservoir dust vacuuming samples and airborne dust volumetric air sampling remain popular techniques, recent literature describes sampling using furnace filters and ion-charging devices, both which help to eliminate the need for trained staff; however, variable correlation with reservoir dust and volumetric air sampling has been described. Personal sampling devices include intra-nasal samples and personal volumetric air samples. While these devices may offer better estimates of breathable allergens, they are worn for short periods of time and can be cumbersome. Reservoir dust sampling is inexpensive and is possible for families to perform. Airborne dust sampling can be more expensive and may better quantify cat, dog, and mouse allergen exposure. Personal sampling devices may offer a better representation of breathable air.
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Affiliation(s)
- Torie Grant
- Division of Pediatric Allergy/Immunology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Ana M Rule
- Department of Environmental Health and Engineering, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - Kirsten Koehler
- Department of Environmental Health and Engineering, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - Robert A Wood
- Division of Pediatric Allergy/Immunology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Elizabeth C Matsui
- Departments of Population Health and Pediatrics, Dell Medical School, The University of Texas at Austin, 1701 Trinity St., Stop Z0500, Austin, TX, 78712, USA.
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Sarathep P, Phonkaew W. A lost world disease: Copra itch outbreak caused by Tyrophagus longior mite. IDCases 2018; 12:58-63. [PMID: 29942751 PMCID: PMC6010936 DOI: 10.1016/j.idcr.2018.02.003] [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: 02/08/2018] [Accepted: 02/08/2018] [Indexed: 11/21/2022] Open
Abstract
An outbreak investigation of copra itch revealed a cluster of six suspected cases with skin dermatitis, with 11–32 years of age, belonging to a single family, between June and July 2016 in Phang Nga province, Southern Thailand. Epidemiologic investigation of these suspected cases revealed five probable cases developing multiple discrete erythematous papules with intense pruritus on the body rather than the extremities and one confirmed case whose skin was infested with domestic mite, Tyrophagus longior (Gervais) (Ascari: Ascaridae). This mite was also found in unused coir mattresses outside their bedrooms. Household infestation with T. longior mites rendered these family members to become more susceptible to expose indoor biting of T. longior adult mites that were adapted well to the domestic environments with poor hygienic conditions. Human exposure to mite bites was more likely to be a direct contact than an indirect contact. Findings from this copra itch outbreak investigation provided understanding of natural disease of copra itch and factors that favored the outbreak, and could guide diagnosis for physicians, surveillance and response for surveillance and rapid response teams (SRRTs), and prevention and control for entomologists and public health personnel.
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Affiliation(s)
- Prakit Sarathep
- Ministry of Public Health, Phang Nga Provincial Public Health Office, Phang Nga Province, Thailand
| | - Worayot Phonkaew
- Ministry of Public Health, Phang Nga Provincial Public Health Office, Phang Nga Province, Thailand
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Licina D, Nazaroff WW. Clothing as a transport vector for airborne particles: Chamber study. INDOOR AIR 2018; 28:404-414. [PMID: 29444354 DOI: 10.1111/ina.12452] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 02/07/2018] [Indexed: 05/04/2023]
Abstract
Strong evidence suggests that clothing serves as a reservoir of chemical pollutants and particles, including bioaerosols, which may have health significance. However, little is known about the role that clothing may play as a transport vector for inhaled airborne particles. Here, we contribute toward bridging the knowledge gap by conducting experiments to investigate clothing release fraction (CRF), determined as the size-dependent ratio of released to deposited particulate matter in the diameter range 0.5-10 μm. In a fully controlled chamber with low background particle levels, we deployed a programmable robot to reproducibly quantify the size-dependent CRF as a function of motion type and intensity, dust loadings, and activity duration. On average, 0.3%-3% of deposited particles were subsequently released with fabric motion, confirming that clothing can act as a vehicle for transporting airborne particles. The CRF increased with the vigor of movement and with dust loading. Rubbing and shaking the fabric were more effective than fabric stretching in resuspending particles. We also found that most of the release happened quickly after the onset of the resuspension activity. Particle size substantially influenced the CRF, with larger particles exhibiting higher values.
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Affiliation(s)
- D Licina
- Department of Civil and Environmental Engineering, University of California, Berkeley, CA, USA
| | - W W Nazaroff
- Department of Civil and Environmental Engineering, University of California, Berkeley, CA, USA
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10
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Dilley MA, Phipatanakul W. Environmental control measures for the management of atopy. Ann Allergy Asthma Immunol 2017; 118:154-160. [PMID: 28153081 DOI: 10.1016/j.anai.2015.12.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Revised: 12/22/2015] [Accepted: 12/29/2015] [Indexed: 12/16/2022]
Affiliation(s)
- Meredith A Dilley
- Boston Children's Hospital, Boston, Massachusetts; Harvard Medical School, Boston, Massachusetts
| | - Wanda Phipatanakul
- Boston Children's Hospital, Boston, Massachusetts; Harvard Medical School, Boston, Massachusetts.
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Salo PM, Wilkerson J, Rose KM, Cohn RD, Calatroni A, Mitchell HE, Sever ML, Gergen PJ, Thorne PS, Zeldin DC. Bedroom allergen exposures in US households. J Allergy Clin Immunol 2017; 141:1870-1879.e14. [PMID: 29198587 DOI: 10.1016/j.jaci.2017.08.033] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 08/16/2017] [Accepted: 08/28/2017] [Indexed: 10/18/2022]
Abstract
BACKGROUND Bedroom allergen exposures contribute to allergic disease morbidity because people spend considerable time in bedrooms, where they come into close contact with allergen reservoirs. OBJECTIVE We investigated participant and housing characteristics, including sociodemographic, regional, and climatic factors, associated with bedroom allergen exposures in a nationally representative sample of the US population. METHODS Data were obtained from National Health and Nutrition Examination Survey 2005-2006. Information on participant and housing characteristics was collected by using questionnaires and environmental assessments. Concentrations of 8 indoor allergens (Alt a 1, Bla g 1, Can f 1, Fel d 1, Der f 1, Der p 1, Mus m 1, and Rat n 1) in dust vacuumed from nearly 7000 bedrooms were measured by using immunoassays. Exposure levels were classified as increased based on percentile (75th/90th) cutoffs. We estimated the burden of exposure to multiple allergens and used multivariable logistic regression to identify independent predictors for each allergen and household allergen burden. RESULTS Almost all participants (>99%) had at least 1 and 74.2% had 3 to 6 allergens detected. More than two thirds of participants (72.9%) had at least 1 allergen and 18.2% had 3 or more allergens exceeding increased levels. Although exposure variability showed significant racial/ethnic and regional differences, high exposure burden to multiple allergens was most consistently associated with the presence of pets and pests, living in mobile homes/trailers and older and rental homes, and living in nonmetropolitan areas. CONCLUSIONS Exposure to multiple allergens is common. Despite highly variable exposures, bedroom allergen burden is strongly associated with the presence of pets and pests.
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Affiliation(s)
- Päivi M Salo
- Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC
| | | | | | | | | | | | | | - Peter J Gergen
- Division of Allergy, Immunology, and Transplantation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Peter S Thorne
- University of Iowa College of Public Health, Iowa City, Iowa
| | - Darryl C Zeldin
- Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC.
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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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Takács S, Gries R, Zhai H, Gries G. The Sex Attractant Pheromone of Male Brown Rats: Identification and Field Experiment. Angew Chem Int Ed Engl 2016; 55:6062-6. [DOI: 10.1002/anie.201511864] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 02/11/2016] [Indexed: 11/05/2022]
Affiliation(s)
- Stephen Takács
- Department of Biological Sciences Simon Fraser University Burnaby British Columbia Canada
| | - Regine Gries
- Department of Biological Sciences Simon Fraser University Burnaby British Columbia Canada
| | - Huimin Zhai
- Department of Biological Sciences Simon Fraser University Burnaby British Columbia Canada
- Department of Chemistry Simon Fraser University Burnaby British Columbia Canada
| | - Gerhard Gries
- Department of Biological Sciences Simon Fraser University Burnaby British Columbia Canada
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14
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The Sex Attractant Pheromone of Male Brown Rats: Identification and Field Experiment. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201511864] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Codispoti CD, Bernstein DI, Levin L, Reponen T, Ryan PH, Biagini Myers JM, Villareal M, Burkle J, Lummus Z, Lockey JE, Khurana Hershey GK, LeMasters GK. Early-life mold and tree sensitivity is associated with allergic eosinophilic rhinitis at 4 years of age. Ann Allergy Asthma Immunol 2015; 114:193-198.e4. [PMID: 25744905 DOI: 10.1016/j.anai.2014.12.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Revised: 12/10/2014] [Accepted: 12/12/2014] [Indexed: 11/17/2022]
Abstract
BACKGROUND Nasal eosinophils are a biomarker for allergic rhinitis (AR) and are associated with increased symptom severity. OBJECTIVE To identify predictors of allergic eosinophilic rhinitis (AER) in early childhood in children at higher risk for chronic allergic respiratory disorders. METHODS In the Cincinnati Childhood Allergy and Air Pollution Study, infants born to aeroallergen-sensitized and symptomatic parents were examined and underwent skin prick testing (SPT) annually to 15 aeroallergens from 1 to 4 years of age. Wheal circumferences were traced and scanned and areas were determined by computer planimetry. At 4 years, AER was defined as (1) at least 1 positive aeroallergen SPT result, (2) presence of sneezing and runny nose without a cold or influenza, and (3) nasal eosinophilia of at least 5%. Wheal areas at 1 to 3 years were analyzed for an association with AER compared with children without AR. RESULTS At 4 years, 487 children completed rhinitis health histories, SPT, and nasal sampling. Ninety-nine children (22.8%) had AR. Thirty-eight children had AER (8.8% of total sample and 38.4% of AR sample, respectively). At 3 years, for every 1-mm(2) increase in Penicillium species (adjusted odds ratio 1.18, 95% confidence interval 1.06-1.32, P = .002) and maple (adjusted odds ratio 1.07, 95% confidence interval 1.01-1.13, P = .02), wheal area significantly increased the risk of AER at 4 years of age. CONCLUSION Allergic eosinophilic rhinitis was identified in 8.8% of children at 4 years of age. Age 3 years was the earliest that aeroallergen SPT wheal areas were predictive of AER. Skin testing at 3 years identifies children at risk for an AR phenotype with nasal eosinophilia.
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Affiliation(s)
- Christopher D Codispoti
- Department of Internal Medicine, Divisions of Immunology/Allergy and Pulmonary Medicine, University of Cincinnati, Cincinnati, Ohio; Department of Environmental Health, University of Cincinnati, Cincinnati, Ohio; Division of Immunology and Microbiology, Rush University Medical Center, Chicago, Illinois.
| | - David I Bernstein
- Department of Internal Medicine, Divisions of Immunology/Allergy and Pulmonary Medicine, University of Cincinnati, Cincinnati, Ohio
| | - Linda Levin
- Department of Environmental Health, University of Cincinnati, Cincinnati, Ohio
| | - Tiina Reponen
- Department of Environmental Health, University of Cincinnati, Cincinnati, Ohio
| | - Patrick H Ryan
- Department of Environmental Health, University of Cincinnati, Cincinnati, Ohio; Division of Asthma Research, Children's Hospital Medical Center, Rush University Medical Center, Chicago, Illinois
| | | | - Manuel Villareal
- Department of Internal Medicine, Divisions of Immunology/Allergy and Pulmonary Medicine, University of Cincinnati, Cincinnati, Ohio
| | - Jeff Burkle
- Department of Environmental Health, University of Cincinnati, Cincinnati, Ohio
| | - Zana Lummus
- Department of Internal Medicine, Divisions of Immunology/Allergy and Pulmonary Medicine, University of Cincinnati, Cincinnati, Ohio
| | - James E Lockey
- Department of Internal Medicine, Divisions of Immunology/Allergy and Pulmonary Medicine, University of Cincinnati, Cincinnati, Ohio; Department of Environmental Health, University of Cincinnati, Cincinnati, Ohio
| | - Gurjit K Khurana Hershey
- Division of Asthma Research, Children's Hospital Medical Center, Rush University Medical Center, Chicago, Illinois
| | - Grace K LeMasters
- Department of Environmental Health, University of Cincinnati, Cincinnati, Ohio
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Raulf M, Buters J, Chapman M, Cecchi L, de Blay F, Doekes G, Eduard W, Heederik D, Jeebhay MF, Kespohl S, Krop E, Moscato G, Pala G, Quirce S, Sander I, Schlünssen V, Sigsgaard T, Walusiak-Skorupa J, Wiszniewska M, Wouters IM, Annesi-Maesano I. Monitoring of occupational and environmental aeroallergens-- EAACI Position Paper. Concerted action of the EAACI IG Occupational Allergy and Aerobiology & Air Pollution. Allergy 2014; 69:1280-99. [PMID: 24894737 DOI: 10.1111/all.12456] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/30/2014] [Indexed: 11/28/2022]
Abstract
Exposure to high molecular weight sensitizers of biological origin is an important risk factor for the development of asthma and rhinitis. Most of the causal allergens have been defined based on their reactivity with IgE antibodies, and in many cases, the molecular structure and function of the allergens have been established. Significant information on allergen levels that cause sensitization and allergic symptoms for several major environmental and occupational allergens has been reported. Monitoring of high molecular weight allergens and allergen carrier particles is an important part of the management of allergic respiratory diseases and requires standardized allergen assessment methods for occupational and environmental (indoor and outdoor) allergen exposure. The aim of this EAACI task force was to review the essential points for monitoring environmental and occupational allergen exposure including sampling strategies and methods, processing of dust samples, allergen analysis, and quantification. The paper includes a summary of different methods for sampling and allergen quantification, as well as their pros and cons for various exposure settings. Recommendations are being made for different exposure scenarios.
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Affiliation(s)
- M. Raulf
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance; Ruhr-Universität Bochum (IPA); Bochum Germany
| | - J. Buters
- ZAUM- Center of Allergy & Environment; Helmholtz Zentrum München/Technical Universität München; Christine Kühne Center for Allergy Research and Education (CK-CARE); Member of the German Center of Lung Research (DZL); Munich Germany
| | | | - L. Cecchi
- Interdepartmental Centre of Bioclimatology; University of Florence; Allergy and Clinical Immunology Section; Azienda Sanitaria di Prato; Prato Italy
| | - F. de Blay
- Department of Chest Diseases; University Hospital Strasbourg; Strasbourg France
| | - G. Doekes
- Division of Environmental Epidemiology; Institute for Risk Assessment Sciences (IRAS); Utrecht University; Utrecht the Netherlands
| | - W. Eduard
- Department of Chemical and Biological Work Environment/National Institute of Occupational Health; Institute of Medical Biology; University in Tromsø; Tromsø Norway
| | - D. Heederik
- Division of Environmental Epidemiology; Institute for Risk Assessment Sciences (IRAS); Utrecht University; Utrecht the Netherlands
| | - M. F. Jeebhay
- Centre for Occupational and Environmental Health Research; School of Public Health and Family Medicine, University of Cape Town; Cape Town South Africa
| | - S. Kespohl
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance; Ruhr-Universität Bochum (IPA); Bochum Germany
| | - E. Krop
- Division of Environmental Epidemiology; Institute for Risk Assessment Sciences (IRAS); Utrecht University; Utrecht the Netherlands
| | - G. Moscato
- Department of Public Health; Experimental and Forensic Medicine of the University of Pavia; Pavia Italy
| | - G. Pala
- Occupational Physician's Division; Local Health Authority of Sassari; Sassari Italy
| | - S. Quirce
- Department of Allergy; Hospital La Paz Institute for Health Research (IdiPAZ) and CIBER of Respiratory Diseases CIBERES; Madrid Spain
| | - I. Sander
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance; Ruhr-Universität Bochum (IPA); Bochum Germany
| | - V. Schlünssen
- Department of Public Health; Section for Environment; Occupation and Health; Aarhus University; Aarhus Denmark
| | - T. Sigsgaard
- Department of Public Health; Section for Environment; Occupation and Health; Aarhus University; Aarhus Denmark
| | | | | | - I. M. Wouters
- Division of Environmental Epidemiology; Institute for Risk Assessment Sciences (IRAS); Utrecht University; Utrecht the Netherlands
| | - I. Annesi-Maesano
- INSERM; Equipe Epidémiologie des allergies et des maladies respiratorires UMR-S 707; Paris France
- EPAR; Faculté de Médecine Saint-Antoine; UPMC; Paris France
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Bla g 3: a novel allergen of German cockroach identified using cockroach-specific avian single-chain variable fragment antibody. Ann Allergy Asthma Immunol 2013; 112:140-145.e1. [PMID: 24468254 DOI: 10.1016/j.anai.2013.11.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Revised: 10/30/2013] [Accepted: 11/03/2013] [Indexed: 11/22/2022]
Abstract
BACKGROUND The IgE response to cockroach allergens is thought to be associated with asthma. German cockroach (GCr) allergen extract is a complex mixture of allergens, and the identification and characterization of immunodominant allergens is important for the effective diagnosis and treatment of GCr-induced asthma. OBJECTIVE To characterize a novel GCr allergen homologous to the American cockroach allergen Per a 3. METHODS GCr-specific avian monoclonal antibodies were used for direct immunoprecipitation of specific targets from whole-body GCr extract. Precipitated protein was identified by mass spectrometry and sequence analysis. Putative recombinant protein also was expressed, purified, and used for determination of allergenicity, determined by IgE enzyme-linked immunosorbent assay with serum from 61 GCr-allergic patients. The identified target also was analyzed for heat stability using a bead-based assay. RESULTS The immunoprecipitated target of monoclonal antibody 2A1 was identified as a novel allergen of GCr homologous to American cockroach allergen Per a 3. This homolog, designated Bla g 3, has an apparent mass of 78 kDa, can be measured in GCr extract using antibody 2A1, and is a heat-stable protein. Screening of 61 serum samples from GCr-allergic patients showed a 22% prevalence of Bla g 3-specific IgE. CONCLUSION Bla g 3 is a GCr allergen with structural homology to American cockroach allergen Per a 3.
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Assessment of human allergic diseases. Clin Immunol 2013. [DOI: 10.1016/b978-0-7234-3691-1.00109-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Sensitization to cockroach allergen: immune regulation and genetic determinants. Clin Dev Immunol 2012; 2012:563760. [PMID: 22272212 PMCID: PMC3261483 DOI: 10.1155/2012/563760] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2011] [Accepted: 10/03/2011] [Indexed: 12/21/2022]
Abstract
Asthma is a major public health concern. Cockroach allergen exposure and cockroach allergic sensitization could contribute to the higher prevalence of asthma. However, the underlying immune mechanism and the genetic etiology remain unclear. Recent advances have demonstrated that several receptors (PAR-2, TLRs, CLRs) and their pathways mediate antigen uptake from the environment and induce allergies by signaling T cells to activate an inappropriate immune response. Cockroach-derived protease can disturb airway epithelial integrity via PAR-2 and leads to an increased penetration of cockroach allergen, resulting in activation of innate immune cells (e.g., DCs) via binding to either TLRs or CLRs. The activated DCs can direct cells of the adaptive immune system to facilitate promotion of Th2 cell response and subsequently increase risk of sensitization. Mannose receptor (MR), as a CLR, has been shown to mediate Bla g2 (purified cockroach allergen) uptake by DCs and to determine allergen-induced T cell polarization. Additionally, genetic factors may play an important role in conferring the susceptibility to cockroach sensitization. Several genes have been associated with cockroach sensitization and related phenotypes (HLA-D, TSLP, IL-12A, MBL2). In this review, we have focused on studies on the cockroach allergen induced immunologic responses and genetic basis for cockroach sensitization.
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Williams AH, Smith JT, Hudgens EE, Rhoney S, Ozkaynak H, Hamilton RG, Gallagher JE. Allergens in household dust and serological indicators of atopy and sensitization in Detroit children with history-based evidence of asthma. J Asthma 2011; 48:674-84. [PMID: 21827376 DOI: 10.3109/02770903.2011.599909] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Home exposure to allergens is an important factor in the development of sensitization and subsequent exacerbations of allergic asthma. We investigated linkages among allergen exposure, immunological measurements, and asthma by examining (1) reservoir dust allergen levels in homes, (2) associations between presence of allergens in homes and sensitization status of resident children, and (3) associations between asthma status and total IgE, atopy (by Phadiatop), and positive allergen-specific tests. METHODS The study protocol was approved by Institutional Review Boards (IRBs) of the University of North Carolina Chapel Hill; Westat, Inc.; and the US Environmental Protection Agency Human Research Protocol Office. Data were collected from questionnaires, serum analyses, and household vacuum dust. Children (n = 205) were predominately African American (AA) (85.4%) and 51.6% were asthmatic. Sera from 185 children and home dust samples (n = 141) were analyzed for total and specific IgE antibodies to allergens from cat and dog dander, cockroach, dust mites, mice, rats, and molds. RESULTS Sixty percent of the homes had detectable levels of three or more dust allergens. The proportions of children with positive allergen-specific IgE tests were dust mite (32%), dog (28%), cat (23%), cockroach (18%), mouse (5%), rat (4%), and molds (24-36%). Children testing positive to a single allergen also had positive responses to other allergens. Those children with positive serum tests for cat, dog, and dust mite lived in homes with detectable levels of cat (51%), dog (90%), and dust mite (Der f 1) (92%) allergens. Correlations between children's specific IgE levels and dust levels were linearly related for dog (p < .04), but not for cat (p = .12) or dust mite (Der f 1) (p = .21). Odds ratios (95% CI) for the associations between asthma and serum-specific IgE were over 1.0 for cat, dog, dust mite (Der f 1), cockroach, and four types of molds. House dust allergen exposure levels, however, exhibited no differences between asthmatic and non-asthmatic homes. CONCLUSIONS Both the co-occurrence of multiple allergens in dust and the high frequency of multiple allergen sensitizations indicate that a broad-based intervention aimed at reducing multiple allergens (pets, pests, and molds) would be more successful than any approach that aimed at reducing one type of allergen.
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Affiliation(s)
- Ann Houston Williams
- Epidemiology Branch, National Health and Environmental Effects Research Laboratory, United States Environmental Protection Agency, Research Triangle Park, NC 27711, USA.
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Reid CE, Gamble JL. Aeroallergens, allergic disease, and climate change: impacts and adaptation. ECOHEALTH 2009; 6:458-70. [PMID: 19908096 PMCID: PMC2880235 DOI: 10.1007/s10393-009-0261-x] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Recent research has shown that there are many effects of climate change on aeroallergens and thus allergic diseases in humans. Increased atmospheric carbon dioxide concentration acts as a fertilizer for plant growth. The fertilizing effects of carbon dioxide, as well as increased temperatures from climate change, increase pollen production and the allergen content of pollen grains. In addition, higher temperatures are changing the timing and duration of the pollen season. As regional climates change, plants can move into new areas and changes in atmospheric circulation can blow pollen- and spore-containing dust to new areas, thus introducing people to allergens to which they have not been exposed previously. Climate change also influences the concentrations of airborne pollutants, which alone, and in conjunction with aeroallergens, can exacerbate asthma or other respiratory illnesses. The few epidemiological analyses of meteorological factors, aeroallergens, and allergic diseases demonstrate the pathways through which climate can exert its influence on aeroallergens and allergic diseases. In addition to the need for more research, there is the imperative to take preventive and adaptive actions to address the onset and exacerbation of allergic diseases associated with climate variability and change.
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Affiliation(s)
- Colleen E. Reid
- Environmental Health Sciences Division, School of Public Health, University of California, Berkeley, 50 University Hall, Berkeley, CA 94720 USA
| | - Janet L. Gamble
- Global Change Research Program, National Center for Environmental Assessment, Office of Research and Development, U.S. Environmental Protection Agency, 1200 Pennsylvania Avenue, NW (MC 8601P), Washington, DC 20460 USA
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Horse allergens: An underestimated risk for allergic sensitization in an urban atopic population without occupational exposure. Respir Med 2008; 103:414-20. [PMID: 18996689 DOI: 10.1016/j.rmed.2008.09.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2008] [Revised: 09/23/2008] [Accepted: 09/25/2008] [Indexed: 10/21/2022]
Abstract
BACKGROUND Data on allergic sensitization to horse allergen in modern urban areas are scarce. The aim of this study was to investigate the characteristics of allergic sensitization and the modality of exposure to horse allergens in atopic patients living in an urban area and without occupational exposure to horse and/or horse-derived materials. METHODS From among 1822 consecutive outpatients, we selected all subjects who had an immediate skin reaction to horse dander. We recorded the patients' clinical history including a meticulous evaluation of the possibility and eventual modality of horse exposure, and the results of skin-prick tests (SPT) and total/specific IgE antibody analyses. RESULTS Of 1201 SPT-positive patients, 35 (3.43%) were sensitized to horse dander. No patient was mono-sensitized. Six individuals reported having direct horse contact, 10 subjects had occasional contact with horse owners (indirect exposure), and 19 denied direct or indirect exposure to horses or horse allergens. Twenty of the 35 horse-sensitized patients reported both nasal and bronchial symptoms, 14 had rhinitis without asthma and one had asthma without rhinitis. CONCLUSIONS Our results suggest that allergic sensitization to horse allergens is more frequent than expected in urban-dwelling subjects without direct or occupational exposure to horses. Highly atopic individuals or individuals who are sensitized to common pet dander should undergo SPT and evaluation of serum specific IgE before starting activities involving regular contact with horses such as riding, and before entering environments associated with horses.
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Gore JC, Schal C. Cockroach allergen biology and mitigation in the indoor environment. ANNUAL REVIEW OF ENTOMOLOGY 2007; 52:439-63. [PMID: 17163801 DOI: 10.1146/annurev.ento.52.110405.091313] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
For nearly a half century, cockroaches have been recognized as a major cause of asthma morbidity in the urban, inner-city environment. Several cockroach-produced allergens have been identified and characterized, and a few have been produced as recombinant proteins. Recent research has moved beyond clinical, patient-based investigations to a more entomological perspective that addresses the production, physiological regulation, and developmental expression of cockroach allergens, thus providing insight into their functional biology and their relationship to current cockroach control strategies. Although successful removal of cockroach allergens from the infested environment has been difficult to accomplish with remedial sanitation, large-scale reductions in cockroach allergens below clinically relevant thresholds have recently been realized through suppression of cockroach populations. Here we review the current understanding of cockroach allergen biology and the demographics associated with human exposure and sensitization. We also critically evaluate allergen mitigation studies from an entomological perspective, highlighting disparities between successful and failed attempts to lessen the cockroach allergen burden in homes.
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Affiliation(s)
- J Chad Gore
- Department of Entomology, North Carolina State University, Raleigh, North Carolina 27695-7613, USA.
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