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Demange V, Zmirou-Navier D, Bohadana A, Wild P. Do airway inflammation and airway responsiveness markers at the start of apprenticeship predict their evolution during initial training? A longitudinal study among apprentice bakers, pastry makers and hairdressers. BMC Pulm Med 2018; 18:113. [PMID: 29996808 PMCID: PMC6042364 DOI: 10.1186/s12890-018-0674-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 06/13/2018] [Indexed: 11/15/2022] Open
Abstract
Background The natural history of airway inflammation and symptoms in occupations at risk of asthma is still not fully understood. We aimed to study the evolution during apprenticeship of inflammation markers, bronchial hyperresponsiveness (BHR) and symptoms in at-risk subgroups as defined from measurements of markers made shortly after the start of training. Methods Respiratory symptoms, FEV1 and airway resistance post-bronchial challenge (MBC) test results, fractional exhaled nitric oxide (FeNO) measurements, and eosinophils in nasal lavage fluid were investigated in apprentice bakers, pastry-makers and hairdressers. Four visits were conducted: at the start of the training and every six months thereafter. Four baseline risk groups were defined, based on, (i) a high level of FeNO (NO), (ii) eosinophils > 1% (Eosino), (iii) a ≥ 15% decrease in FEV1 during the MBC test (HR), and (iv) a ≥ 50% increase in the resistance (Resist). The statistical analysis relied on mixed models. Results At baseline, the inflammation markers were related to the MBC markers. There was no evidence to suggest that the baseline risk groups predict a differential evolution of the airway inflammation and bronchial responsiveness markers, or the asthma-like symptoms considered. The baseline risk groups defined from MBC test predicted the levels of MBC markers. Similarly, the baseline risk groups based on eosinophilic inflammation predicted the levels of markers for eosinophilia. These results were similar in the three training tracks, with the exception of the FeNO levels which were not different according to the Eosino risk group. Twelve possible new asthma cases were identified, only the HR risk group predicted their occurrence. Conclusions Among this young population, at-risk groups based on initial high levels of inflammation markers did not experience any worsening during the follow-up. However, initial BHR predicted consistently high levels of all markers considered and occurrence of possible asthma. Electronic supplementary material The online version of this article (10.1186/s12890-018-0674-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Valérie Demange
- Institut National de Recherche et de Sécurité (INRS), 1 rue du Morvan, 54519, Vandoeuvre-les-Nancy, France.
| | - Denis Zmirou-Navier
- School of Public Health (EHESP), 15 avenue du Professeur Léon-Bernard, 35043, Rennes Cedex, France
| | - Abraham Bohadana
- Pulmonary Institute, Shaare Zedek Medical Center, 12 Baiyt Street, 91031, Jerusalem, Israel
| | - Pascal Wild
- Institut National de Recherche et de Sécurité (INRS), 1 rue du Morvan, 54519, Vandoeuvre-les-Nancy, France
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Balogun RA, Siracusa A, Shusterman D. Occupational rhinitis and occupational asthma: Association or progression? Am J Ind Med 2018; 61:293-307. [PMID: 29411403 DOI: 10.1002/ajim.22819] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/20/2018] [Indexed: 12/26/2022]
Abstract
BACKGROUND Occupational asthma is the most frequently reported occupational respiratory disease in registries, and is often co-diagnosed with occupational rhinitis. We undertook a systematic review of the English-language epidemiologic literature linking these two conditions, with emphasis on progression from occupational rhinitis to occupational asthma. METHODS PubMed and Embase were queried in a series of structured searches designed to identify studies comparing occupational asthma and occupational rhinitis incidence or prevalence in occupationally exposed individuals. RESULTS The searches yielded a total of 109 unique citations, 15 of which yielded inferential data on the occupational rhinitis-asthma relationship. Nine of fifteen studies showed statistically significant associations between the occurrence of occupational rhinitis and occupational asthma among individual workers. CONCLUSIONS Limited data support the notion that occupational rhinitis precedes the development of occupational asthma, particularly when high-molecular-weight (HMW) agents are involved. The relationship between the two conditions could not be evaluated in many relevant studies due to a lack of cross-tabulation of individual cases.
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Affiliation(s)
- Rahmat A. Balogun
- Division of Occupational and Environmental Medicine; University of California; San Francisco California
| | | | - Dennis Shusterman
- Division of Occupational and Environmental Medicine; University of California; San Francisco California
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Coman I, Lemière C. Fractional Exhaled Nitric Oxide (FeNO) in the Screening and Diagnosis Work-Up of Occupational Asthma. CURRENT TREATMENT OPTIONS IN ALLERGY 2017. [DOI: 10.1007/s40521-017-0122-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Cox R, Phillips O, Fukumoto J, Fukumoto I, Parthasarathy PT, Arias S, Cho Y, Lockey RF, Kolliputi N. Enhanced Resolution of Hyperoxic Acute Lung Injury as a result of Aspirin Triggered Resolvin D1 Treatment. Am J Respir Cell Mol Biol 2015; 53:422-35. [PMID: 25647402 DOI: 10.1165/rcmb.2014-0339oc] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Acute lung injury (ALI), which presents as acute respiratory failure, is a major clinical problem that requires aggressive care, and patients who require prolonged oxygen exposure are at risk of developing this disease. Although molecular determinants of ALI have been reported, the molecules involved in disease catabasis associated with oxygen toxicity have not been well studied. It has been reported that lung mucosa is rich in omega-3 fatty acid dicosahexanoic acid (DHA), which has antiinflammatory properties. Aspirin-triggered resolvin D1 (AT-RvD1) is a potent proresolution metabolite of DHA that can curb the inflammatory effects in various acute injuries, yet the effect of AT-RvD1 on hyperoxic acute lung injury (HALI) or in the oxygen toxicity setting in general has not been investigated. The effects of AT-RvD1 on HALI were determined for the first time in 8- to 10-week-old C57BL/6 mice that were exposed to hyperoxia (≥95% O2) for 48 hours. Mice were given AT-RvD1 (100 ng) in saline or a saline vehicle for 24 hours in normoxic (≈21% O2) conditions after hyperoxia. Lung tissue and bronchoalveolar lavage (BAL) fluid were collected for analysis associated with proinflammatory signaling and lung inflammation. AT-RvD1 treatment resulted in reduced oxidative stress, increased glutathione production, and significantly decreased tissue inflammation. AT-RvD1 treatment also significantly reduced the lung wet/dry ratio, protein in BAL fluid, and decreased apoptotic and NF-κB signaling. These results show that AT-RvD1 curbs oxygen-induced lung edema, permeability, inflammation, and apoptosis and is thus an effective therapy for prolonged hyperoxia exposure in this murine model.
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Affiliation(s)
- Ruan Cox
- Departments of 1 Internal Medicine and.,2 Molecular Medicine, Division of Allergy and Immunology, Morsani College of Medicine, University of South Florida, Tampa, Florida
| | | | | | | | | | | | - Young Cho
- Departments of 1 Internal Medicine and
| | | | - Narasaiah Kolliputi
- Departments of 1 Internal Medicine and.,2 Molecular Medicine, Division of Allergy and Immunology, Morsani College of Medicine, University of South Florida, Tampa, Florida
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Nemer M, Sikkeland LIB, Kasem M, Kristensen P, Nijem K, Bjertness E, Skare Ø, Bakke B, Kongerud J, Skogstad M. Airway inflammation and ammonia exposure among female Palestinian hairdressers: a cross-sectional study. Occup Environ Med 2015; 72:428-34. [PMID: 25653315 DOI: 10.1136/oemed-2014-102437] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Accepted: 01/18/2015] [Indexed: 11/04/2022]
Abstract
OBJECTIVES Little is known about the working conditions and airway inflammation in hairdressers in Palestine. We aimed to investigate if hairdressers in Palestine have a higher level of airway inflammation as compared to a control group. We also assessed the hairdressers' physical working conditions and exposure to ammonia gases at the hair salons. Lastly, we investigated the association between ammonia levels and inflammation markers in the airways and the blood. METHODS Our study participants were 33 non-smoking hairdressers (aged 19-50 years) and 35 non-smoking control subjects (aged 18-49 years). Both groups answered a questionnaire on respiratory symptoms, and performed lung function and exhaled nitric oxide (eNO) tests. Blood and sputum samples were collected from all participants and air concentration levels of ammonia were measured in 13 salons. RESULTS Hairdressers had a higher level of sputum neutrophil count (absolute numbers/mg sputum (median (25th-75th centiles)) compared to controls, 376 (183-980) and 182 (96-358), respectively. Hairdressers also had significantly elevated eNO and blood C reactive protein (CRP) levels compared to the control subjects, controlled for age and body mass index. Exposure measurements showed that the hairdressers in salons with scarce ventilation were exposed to ammonia concentration, ranging from 3 to 61 mg/m(3). CONCLUSIONS Compared to unexposed controls, the hairdressers had signs of neutrophilic airway inflammation, higher eNO levels and higher CRP. The hairdressers were exposed to high concentrations of ammonia from hairdressing chemicals and their working conditions were unsatisfactory.
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Affiliation(s)
- Maysaa Nemer
- Occupational Epidemiology and Biological Research Lab, Department of Biology, Hebron University, Hebron, Palestine Section for Preventive Medicine and Epidemiology, Institute of Health and Society, University of Oslo, Oslo, Norway
| | - Liv I B Sikkeland
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Mayes Kasem
- Department of Chemical and Biological Work Environment, National Institute of Occupational Health, Oslo, Norway
| | - Petter Kristensen
- Section for Preventive Medicine and Epidemiology, Institute of Health and Society, University of Oslo, Oslo, Norway Department of Occupational Medicine and Epidemiology, National Institute of Occupational Health, Oslo, Norway
| | - Khaldoun Nijem
- Occupational Epidemiology and Biological Research Lab, Department of Biology, Hebron University, Hebron, Palestine
| | - Espen Bjertness
- Section for Preventive Medicine and Epidemiology, Institute of Health and Society, University of Oslo, Oslo, Norway
| | - Øivind Skare
- Department of Occupational Medicine and Epidemiology, National Institute of Occupational Health, Oslo, Norway
| | - Berit Bakke
- Department of Chemical and Biological Work Environment, National Institute of Occupational Health, Oslo, Norway
| | - Johny Kongerud
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway. Department of Respiratory Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Marit Skogstad
- Department of Occupational Medicine and Epidemiology, National Institute of Occupational Health, Oslo, Norway
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Deschamps F, Langrand J, Lesage FX. Health assessment of self-employed hairdressers in France. J Occup Health 2014; 56:157-63. [PMID: 24598052 DOI: 10.1539/joh.13-0139-fs] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVE Hairdressers have a high incidence of occupational diseases, owing to excessive wet work and exposure to chemical substances. The objective of this study was to assess the prevalence of occupational diseases in a population of self-employed hairdressers, matched for age and sex with a control group of wage-earning hairdressers. METHOD A health questionnaire was administered to both groups by an occupational health practitioner. RESULTS Irritative skin diseases were reported by 1.5% of the self-employed hairdressers versus 9.1% of the wage earners. Conversely, the rates of respiratory diseases and cumulative musculoskeletal injuries were much higher among self-employed hairdressers. CONCLUSIONS This study shows that the overall health of self-employed hairdressers is lower than that of their wage-earning counterparts. This can be attributed to several aspects of work exposure, organization, including longer working hours, fewer protective measures and the absence of preventive medicine in the workplace.
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The characteristics, treatment and prevention of laboratory animal allergy. Lab Anim (NY) 2013; 42:26-33. [PMID: 23246890 DOI: 10.1038/laban.163] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Accepted: 07/27/2012] [Indexed: 11/09/2022]
Abstract
Laboratory animal allergy (LAA) is a pervasive problem that affects up to one-third of laboratory animal personnel. An immediate hypersensitivity reaction can be triggered by contact with antigens present in urine, hair, dander and saliva of laboratory animals. The authors provide an overview of the epidemiology, triggering mechanisms, diagnosis, treatment and risk factors of LAA. They also discuss primary and secondary prevention measures that can be taken to reduce LAA morbidity and to allow personnel suffering from LAA to safely continue to do their jobs.
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Müller L, Brighton LE, Jaspers I. Ozone exposed epithelial cells modify cocultured natural killer cells. Am J Physiol Lung Cell Mol Physiol 2012; 304:L332-41. [PMID: 23241529 DOI: 10.1152/ajplung.00256.2012] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Ozone (O3) causes significant adverse health effects worldwide. Nasal epithelial cells (NECs) are among the first sites within the respiratory system to be exposed to inhaled air pollutants. They recruit, activate, and interact with immune cells via soluble mediators and direct cell-cell contacts. Based on our recent observation demonstrating the presence of natural killer (NK) cells in nasal lavages, the goal of this study was to establish a coculture model of NECs and NK cells and examine how exposure to O3 modifies this interaction. Flow cytometry analysis was used to assess immunophenotypes of NK cells cocultured with either air- or O3-exposed NECs. Our data show that coculturing NK cells with O3-exposed NECs decreased intracellular interferon-γ (IFN-γ), enhanced, albeit not statistically significant, IL-4, and increased CD16 expression on NK cells compared with air controls. Additionally, the cytotoxicity potential of NK cells was reduced after coculturing with O3-exposed NECs. To determine whether soluble mediators released by O3-exposed NECs caused this shift, apical and basolateral supernatants of air- and O3-exposed NECs were used to stimulate NK cells. While the conditioned media of O3-exposed NECs alone did not reduce intracellular IFN-γ, O3 enhanced the expression of NK cell ligands ULBP3 and MICA/B on NECs. Blocking ULBP3 and MICA/B reversed the effects of O3-exposed NECs on IFN-γ production in NK cells. Taken together, these data showed that interactions between NECs and NK cells in the context of O3 exposure changes NK cell activity via direct cell-cell interactions and is dependent on ULBP3/MICA/B expressed on NECs.
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Affiliation(s)
- Loretta Müller
- Center for Environmental Medicine, Asthma, and Lung Biology, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
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Horvath KM, Herbst M, Zhou H, Zhang H, Noah TL, Jaspers I. Nasal lavage natural killer cell function is suppressed in smokers after live attenuated influenza virus. Respir Res 2011; 12:102. [PMID: 21816072 PMCID: PMC3163542 DOI: 10.1186/1465-9921-12-102] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2011] [Accepted: 08/04/2011] [Indexed: 11/30/2022] Open
Abstract
Background Modified function of immune cells in nasal secretions may play a role in the enhanced susceptibility to respiratory viruses that is seen in smokers. Innate immune cells in nasal secretions have largely been characterized by cellular differentials using morphologic criteria alone, which have successfully identified neutrophils as a significant cell population within nasal lavage fluid (NLF) cells. However, flow cytometry may be a superior method to fully characterize NLF immune cells. We therefore characterized immune cells in NLF by flow cytometry, determined the effects of live attenuated influenza virus (LAIV) on NLF and peripheral blood immune cells, and compared responses in samples obtained from smokers and nonsmokers. Methods In a prospective observational study, we characterized immune cells in NLF of nonsmokers at baseline using flow cytometry and immunohistochemistry. Nonsmokers and smokers were inoculated with LAIV on day 0 and serial nasal lavages were collected on days 1-4 and day 9 post-LAIV. LAIV-induced changes of NLF cells were characterized using flow cytometry. Cell-free NLF was analyzed for immune mediators by bioassay. Peripheral blood natural killer (NK) cells from nonsmokers and smokers at baseline were stimulated in vitro with LAIV followed by flow cytometric and mediator analyses. Results CD45(+)CD56(-)CD16(+) neutrophils and CD45(+)CD56(+) NK cells comprised median 4.62% (range 0.33-14.52) and 23.27% (18.29-33.97), respectively, of non-squamous NLF cells in nonsmokers at baseline. LAIV did not induce changes in total NK cell or neutrophil percentages in either nonsmokers or smokers. Following LAIV inoculation, CD16(+) NK cell percentages and granzyme B levels increased in nonsmokers, and these effects were suppressed in smokers. LAIV inoculation enhanced expression of activating receptor NKG2D and chemokine receptor CXCR3 on peripheral blood NK cells from both nonsmokers and smokers in vitro but did not induce changes in CD16(+) NK cells or granzyme B activity in either group. Conclusions These data are the first to identify NK cells as a major immune cell type in the NLF cell population and demonstrate that mucosal NK cell cytotoxic function is suppressed in smokers following LAIV. Altered NK cell function in smokers suggests a potential mechanism that may enhance susceptibility to respiratory viruses.
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Affiliation(s)
- Katherine M Horvath
- Curriculum in Toxicology, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7127, USA
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