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Torres-Borrego J, Sánchez-Solís M. Dissecting Airborne Allergens. J Clin Med 2023; 12:5856. [PMID: 37762797 PMCID: PMC10532401 DOI: 10.3390/jcm12185856] [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: 07/16/2023] [Revised: 08/15/2023] [Accepted: 08/25/2023] [Indexed: 09/29/2023] Open
Abstract
Asthma is a heterogeneous and very complex group of diseases, and includes different clinical phenotypes depending on symptoms, progression, exacerbation patterns, or responses to treatment, among other characteristics. The allergic phenotype is the most frequent, especially in pediatric asthma. It is characterized by sensitization (the production of specific IgEs) to allergens and frequent comorbidity with rhinitis as well as atopic dermatitis. Given the complexity of allergic asthma, knowledge of it must be approached from different points of view: clinical, histological, physiological, epidemiological, biochemical, and immunological, among others. Since partial approaches do not allow for the understanding of this complexity, it is necessary to have multidimensional knowledge that helps in performing the optimal management of each case, avoiding a "blind men and elephant parable" approach. Allergens are antigens that trigger the production of specific IgE antibodies in susceptible individuals, who present symptoms that will depend on the type and intensity of the allergenic load as well as the tissue where the interaction occurs. Airborne allergens cause their effects in the respiratory tract and eyes, and can be indoor or outdoor, perennial, or seasonal. Although allergens such as mites, pollens, or animal dander are generally considered single particles, it is important to note that they contain different molecules which could trigger distinct specific IgE molecules in different patients. General practitioners, pediatricians, and other physicians typically diagnose and treat asthma based on clinical and pulmonary function data in their daily practice. This nonsystematic and nonexhaustive revision aims to update other topics, especially those focused on airborne allergens, helping the diagnostic and therapeutic processes of allergic asthma and rhinitis.
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Affiliation(s)
- Javier Torres-Borrego
- Pediatric Allergy and Pulmonology Unit, Reina Sofia Children’s University Hospital, Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), University of Cordoba, Av. Menendez Pidal sn, 14004 Cordoba, Spain
| | - Manuel Sánchez-Solís
- Pediatric Respiratory and Cystic Fibrosis Unit, Virgen de la Arrixaca University Children’s Hospital, Biomedical Research Institute of Murcia (IMIB), University of Murcia, Avda Teniente Flomesta, 5, 30003 Murcia, Spain;
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Fieten KB, Drijver‐Messelink MT, Cogo A, Charpin D, Sokolowska M, Agache I, Taborda‐Barata LM, Eguiluz‐Gracia I, Braunstahl GJ, Seys SF, den Berge M, Bloch KE, Ulrich S, Cardoso‐Vigueros C, Kappen JH, Brinke AT, Koch M, Traidl‐Hoffmann C, da Mata P, Prins DJ, Pasmans SGMA, Bendien S, Rukhadze M, Shamji MH, Couto M, Oude Elberink H, Peroni DG, Piacentini G, Weersink EJM, Bonini M, Rijssenbeek‐Nouwens LHM, Akdis CA. Alpine altitude climate treatment for severe and uncontrolled asthma: An EAACI position paper. Allergy 2022; 77:1991-2024. [PMID: 35113452 PMCID: PMC9305916 DOI: 10.1111/all.15242] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Revised: 01/14/2022] [Accepted: 01/30/2022] [Indexed: 12/30/2022]
Abstract
Currently available European Alpine Altitude Climate Treatment (AACT) programs combine the physical characteristics of altitude with the avoidance of environmental triggers in the alpine climate and a personalized multidisciplinary pulmonary rehabilitation approach. The reduced barometric pressure, oxygen pressure, and air density, the relatively low temperature and humidity, and the increased UV radiation at moderate altitude induce several physiological and immunological adaptation responses. The environmental characteristics of the alpine climate include reduced aeroallergens such as house dust mites (HDM), pollen, fungi, and less air pollution. These combined factors seem to have immunomodulatory effects controlling pathogenic inflammatory responses and favoring less neuro‐immune stress in patients with different asthma phenotypes. The extensive multidisciplinary treatment program may further contribute to the observed clinical improvement by AACT in asthma control and quality of life, fewer exacerbations and hospitalizations, reduced need for oral corticosteroids (OCS), improved lung function, decreased airway hyperresponsiveness (AHR), improved exercise tolerance, and improved sinonasal outcomes. Based on observational studies and expert opinion, AACT represents a valuable therapy for those patients irrespective of their asthma phenotype, who cannot achieve optimal control of their complex condition despite all the advances in medical science and treatment according to guidelines, and therefore run the risk of falling into a downward spiral of loss of physical and mental health. In the light of the observed rapid decrease in inflammation and immunomodulatory effects, AACT can be considered as a natural treatment that targets biological pathways.
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The Effects of Climate Therapy on Cardiorespiratory Fitness and Exercise-Induced Bronchoconstriction in Children with Asthma. ATMOSPHERE 2021. [DOI: 10.3390/atmos12111486] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
We investigated whether a 1-week stay in the mountains may have a positive impact on Exercise-Induced Bronchoconstriction (EIB) and cardiorespiratory endurance in asthmatic children from an urban area. Spirometry was performed before and 10 min after a 20 m shuttle run test (20mSRT) on the first and seventh day of a summer asthma camp in the Italian Alps at 900 m of altitude. Spirometry z-scores were derived from the Global Lung Initiative 2012 prediction equations, and percentiles of the 20mSRT performance were assigned according to De Miguel-Etayo’s and Tomkinson’s predictive equations. A FEV1 decrease ≥10% after the exercise was defined as EIB. Particulate matter pollution was monitored during the camp and in the urban area of provenience. Twenty-four subjects (age range 7–16 years) were included. Frequency of EIB decreased from 58% (14/24) at day-1 to 33% (8/24) at the end of the camp (p = 0.08). Most subjects with a 20mSRT in the lowest quartile at day 1 had EIB (9/11). The proportion of children with a 20mSRT <25° percentile decreased from 45% (11/24) at day-1 to 16% (4/24) at day-7 (p = 0.02). Conclusion: One-week climate therapy in the mountains improved both bronchial hyperreactivity and cardiorespiratory endurance in our cohort of asthmatic children.
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Khusial R, van Koppen S, Honkoop P, Rijssenbeek-Nouwens L, Keij S, Drijver-Messelink M, Sont J. Davos@home, patient and healthcare providers’ perceptions on mHealth use after high altitude climate therapy in severe asthma: a mixed methods study. (Preprint). JMIR Form Res 2021; 6:e26925. [DOI: 10.2196/26925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 06/29/2021] [Accepted: 08/17/2022] [Indexed: 11/13/2022] Open
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Quignon P, da Mata P, Faraj F, Guibert S, Bernard A, Léonardi J, Loundou AD, Vitte J, Charpin D. Altitude healing effect in severe asthmatic children. Respir Med Res 2020; 79:100810. [PMID: 33540154 DOI: 10.1016/j.resmer.2020.100810] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 11/25/2020] [Accepted: 12/12/2020] [Indexed: 10/22/2022]
Abstract
BACKGROUND The beneficial effect of a climatic treatment in children with asthma was established quite some time ago, but the mechanism of this beneficial effect has not been fully elucidated. We investigated the role of the cytokines of the TH2 pathway, reactive oxygen species (ROS) and reactive nitrogen species (RNS) over the course of a high-altitude climatic therapy. METHODS A group of 67 children originating from various French towns suffering from uncontrolled severe asthma was sent via their medical specialists, to the Briançon climatic area. They were monitored over the course of an entire school year. During this time, they returned home for 15 days during the Christmas holidays. At each stage, assessment of asthma control, lung function examination (peak flow meter and spirometry), and measurement of exhaled NO, ROS and RNS in exhaled breath condensate (EBC), and the level of cytokines in the plasma of the TH2 pathway were carried out. RESULTS The degree of asthma control improved at high altitude and worsened upon returning home. The average value of the peak expiratory flow also improved during the first 3 months but then worsened upon returning home, while the other spirometric parameters did not change. The level of expired NO and the scores for quality of life underwent a similar change. The level of RNS and ROS in the EBC did not change significantly. Besides, a marked and statistically significant decrease in the level of IL-13 and IL-10 was noted. CONCLUSION The beneficial effect of a climatic stay of children suffering from allergic asthma at altitude appears to be linked with less allergenic stimulation.
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Affiliation(s)
- P Quignon
- CEMBREU, 35, rue Croix de Bretagne, 05100 Briançon, France.
| | - P da Mata
- Instituto Clínico de Alergologia, avenue de Berna No. 30, 4(e) B 1050-042, Lisbon, Portugal.
| | - F Faraj
- Centre Les Jeunes Pousses, 34 A, avenue de la République, 05100 Briançon, France
| | - S Guibert
- Centre Les Hirondelles, 17, rue Maisonnette, 05100 Villar-Saint-Pancrace, France
| | - A Bernard
- Centre La Guisane, rue de la Croix de Bretagne, 05100 Villar-Saint-Pancrace, France
| | - J Léonardi
- Centre La Guisane, rue de la Croix de Bretagne, 05100 Villar-Saint-Pancrace, France
| | - A D Loundou
- Department of Medical Statistics, Aix Marseille University, 27, boulevard Jean-Moulin, 13005 Marseille, France.
| | - J Vitte
- Aix-Marseille University IRD, AP-HM, MEPHI, Immunology Department, 19-21, boulevard Jean-Moulin, 13005 Marseille, France.
| | - D Charpin
- Pulmonology Unit, La Timone Hospital, Aix Marseille University, 264, rue Saint-Pierre, Marseille, France.
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Accinelli RA, Leon-Abarca JA. At High Altitude COVID-19 Is Less Frequent: The Experience of Peru. ACTA ACUST UNITED AC 2020. [DOI: 10.1016/j.arbr.2020.09.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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de Nijs SB, Krop EJM, Portengen L, Rijssenbeek-Nouwens LH, de Vries D, Weersink EJM, Heijerman HGM, Heederik DJJ, Lammers JWJ. Effectiveness of pulmonary rehabilitation at high-altitude compared to sea-level in adults with severe refractory asthma. Respir Med 2020; 171:106123. [PMID: 32846334 DOI: 10.1016/j.rmed.2020.106123] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 08/15/2020] [Accepted: 08/17/2020] [Indexed: 10/23/2022]
Abstract
BACKGROUND Beneficial effects of pulmonary rehabilitation at high-altitude (HAPR) in patients with severe refractory asthma have been reported earlier, but evidence for the effectiveness is limited. AIM To investigate the effectiveness of high-altitude pulmonary rehabilitation to comparable treatment at sea-level (LAPR) on patient outcome parameters. METHODS Adults with severe refractory asthma living in The Netherlands were included. Treatment consisted of a 12-week personalized multidisciplinary rehabilitation program either at high-altitude (Davos Switzerland) (n = 93) or in a tertiary lung center at sea-level in The Netherlands (n = 45). At baseline, after treatment, and during 12 months follow-up asthma related quality of life (AQLQ), asthma control (ACQ), pulmonary function and OCS-dose were assessed. Patients could not be randomized resulting in different asthma populations. Groups were compared using linear regression analysis (ANCOVA) adjusted for baseline values, in addition to age, atopy, smoking history, BMI and gender. RESULTS After treatment, and at 12 months follow-up, improved AQLQ(0.92,p < 0.001 and 0.82,p = 0.001, respectively), ACQ(-0.87,p < 0.001 and -0.69,p = 0.008, respectively) and lower maintenance OCS dose (Unadjusted linear regression analysis-5.29 mg, p = 0.003 and Crude Odds Ratio-1.67, p = 0.003, respectively) were observed in the HAPR-group compared to the LAPR group. Patients receiving HAPR also had less asthma exacerbations (≥1 exacerbation: 20% vs 60%,p < 0.001) and showed improvement in lung function (%predFEV1 3.4%,p = 0.014) compared to the LAPR group, but at 12 months no differences between groups were observed. CONCLUSION HAPR resulted in a larger improvement in patient outcome parameters compared to LAPR, on the long run the improvement in patient reported symptoms and lower maintenance OCS-dose persists. Underlying factors that explain this observed effect need to be investigated.
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Affiliation(s)
- S B de Nijs
- Department of Respiratory Medicine, University Medical Center Utrecht, the Netherlands; Institute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands
| | - E J M Krop
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands
| | - L Portengen
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands
| | | | - D de Vries
- Merem Asthma Center Heideheuvel, Hilversum, the Netherlands
| | - E J M Weersink
- Department of Respiratory Medicine, Amsterdam University Medical Center, Location AMC, Amsterdam, the Netherlands
| | - H G M Heijerman
- Department of Respiratory Medicine, University Medical Center Utrecht, the Netherlands.
| | - D J J Heederik
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands
| | - J W J Lammers
- Department of Respiratory Medicine, University Medical Center Utrecht, the Netherlands
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Beerthuizen T, Rijssenbeek-Nouwens LH, van Koppen SM, Khusial RJ, Snoeck-Stroband JB, Sont JK. Internet-Based Self-Management Support After High-Altitude Climate Treatment for Severe Asthma: Randomized Controlled Trial. J Med Internet Res 2020; 22:e13145. [PMID: 32706692 PMCID: PMC7407281 DOI: 10.2196/13145] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 10/29/2019] [Accepted: 03/29/2020] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND In patients with severe asthma, high-altitude climate treatment has been shown to improve asthma control. However, asthma symptoms and limitations may increase after finishing inpatient rehabilitation programs and returning to sea level. OBJECTIVE We assessed the effectiveness of a patient-tailored, internet-based, self-management strategy in addition to usual care after finishing high-altitude climate treatment. METHODS We performed a randomized controlled trial with a 1-year follow-up in patients from a high-altitude asthma center in Davos, Switzerland. At the end of a 12-week multidisciplinary rehabilitation program, 62 adults with asthma were randomized to receive either internet-based self-management support in addition to usual care (n=33) or usual care only after discharge (n=29). The endpoints were changes in asthma-related quality of life according to the Asthma Quality of Life Questionnaire (AQLQ) (a higher score is better) and asthma control according to the Asthma Control Questionnaire (ACQ) (a lower score is better), with a minimally important difference of 0.5 points for both. RESULTS Asthma-related quality of life and asthma control declined over time in the usual care strategy group, whereas there was a slower decline in the internet-based strategy group. For both endpoints, mixed-model analysis showed a significant positive effect in favor of internet-based self-management during follow-up (mean AQLQ score difference 0.39, 95% CI 0.092-0.69; P=.01 and ACQ score difference -0.50, 95% CI -0.86 to -0.15; P=.006), which was prominent among patients with uncontrolled asthma at discharge (AQLQ score difference 0.59, 95% CI 0.19-0.99; P=.003 and ACQ score difference -0.73, 95% CI -1.18 to -0.28; P=.002). CONCLUSIONS Internet-based self-management support was associated with a smaller decline in quality of life and asthma control as compared with usual care, especially in patients with lower asthma control, after completion of high-altitude climate treatment. Internet-based self-management support in adults with severe asthma seems feasible and effective to maintain quality of life and asthma control. TRIAL REGISTRATION The trial is registered in the Netherlands Trial Register (NTR1995).
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Affiliation(s)
- Thijs Beerthuizen
- Department of Biomedical Data Sciences, Section Medical Decision Making, Leiden University Medical Center, Leiden, Netherlands
| | | | - Sophia M van Koppen
- Department of Biomedical Data Sciences, Section Medical Decision Making, Leiden University Medical Center, Leiden, Netherlands
| | - Rishi J Khusial
- Department of Biomedical Data Sciences, Section Medical Decision Making, Leiden University Medical Center, Leiden, Netherlands
| | - Jiska B Snoeck-Stroband
- Department of Biomedical Data Sciences, Section Medical Decision Making, Leiden University Medical Center, Leiden, Netherlands
| | - Jacob K Sont
- Department of Biomedical Data Sciences, Section Medical Decision Making, Leiden University Medical Center, Leiden, Netherlands
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Accinelli RA, Leon-Abarca JA. At High Altitude COVID-19 Is Less Frequent: The Experience of Peru. Arch Bronconeumol 2020; 56:760-761. [PMID: 32782091 PMCID: PMC7365056 DOI: 10.1016/j.arbres.2020.06.015] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 06/16/2020] [Accepted: 06/18/2020] [Indexed: 12/27/2022]
Affiliation(s)
- Roberto Alfonso Accinelli
- Instituto de Investigaciones de la Altura, Universidad Peruana Cayetano Heredia, Lima, Perú; Hospital Cayetano Heredia, Lima, Perú.
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Asthma rehabilitation at high vs. low altitude and its impact on exhaled nitric oxide and sensitization patterns: Randomized parallel-group trial. Respir Med 2020; 170:106040. [PMID: 32843171 DOI: 10.1016/j.rmed.2020.106040] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 05/19/2020] [Accepted: 05/20/2020] [Indexed: 12/29/2022]
Abstract
BACKGROUND Allergens and pollution are reduced at high altitude. We investigated the effect of asthma rehabilitation at high altitude (HA, 3100 m) compared to low altitude (LA, 760 m) on exhaled nitric oxide (FeNO) and on specific IgE levels for house dust mites (HDM,d1) and common pollen (sx1). METHODS For this randomized controlled trial adult asthmatics living <1000 m were randomly assigned to a 3-week in-hospital-rehabilitation (education, physical- and breathing-exercises) at either LA or HA. Changes in FeNO, d1 and sx1 from baseline to end-rehabilitation were measured. RESULTS 50 asthmatics (34 females) were randomized [mean ± standard deviation LA: n = 25, 44 ± 11 years, total IgE 267 ± 365kU/l; HA: n = 25, 43 ± 13 years, total IgE 350 ± 445kU/l]. FeNO significantly improved at HA from 69 ± 56 ppb at baseline to the first day at altitude 23 ± 19 ppb and remained decreased until end-rehabilitation with 37 ± 23 ppb, mean difference 95%CI -31(-50 to -13, p = 0.001) whereas at LA FeNO did not change. A significant decrease in d1 and sx1 at end-rehabilitation was observed in the LA-group [mean difference 95%CI -10.2 kUA/l (-18.9 to -1.4) for d1 and -4.95 kUA/l(-9.69 to -0.21) for sx1] but not in the HA-group. No significant difference between groups [d1 5.9 kUA/l(-4.2 to 16.2) and sx1 4.4 kUA/l(-3.5 to 12.4)] was found. CONCLUSION Rehabilitation at HA led to significant FeNO reduction starting from the first day until end-rehabilitation despite unchanged levels of specific IgE. The significant decrease in d1 and sx1 at end-rehabilitation in the LA group might be explained by less HDM in the hospital and/or reduced seasonal pollen, as this decrease was not observed at HA.
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Boonpiyathad T, Capova G, Duchna H, Croxford AL, Farine H, Dreher A, Clozel M, Schreiber J, Kubena P, Lunjani N, Mirer D, Rückert B, Satitsuksanoa P, Tan G, Groenen PMA, Bersuch E, Akdis M, Strasser DS, Renner ED, Akdis CA. Impact of high-altitude therapy on type-2 immune responses in asthma patients. Allergy 2020; 75:84-94. [PMID: 31267528 DOI: 10.1111/all.13967] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Revised: 04/30/2019] [Accepted: 05/30/2019] [Indexed: 12/21/2022]
Abstract
BACKGROUND Asthma patients present with distinct immunological profiles, with a predominance of type 2 endotype. The aim of this study was to investigate the impact of high-altitude treatment on the clinical and immunological response in asthma. METHODS Twenty-six hospitalized asthma patients (nine eosinophilic allergic; EA, nine noneosinophilic allergic; NEA and eight noneosinophilic nonallergic; NN) and nine healthy controls in high altitude for 21 days were enrolled in the study. We assessed eosinophils, T cells, Tregs, and innate lymphoid cells (ILC) from peripheral blood using flow cytometry. RESULTS The number of eosinophils (both resting and activated) and chemoattractant receptor homolog expressed on Th2 cells (CRTH2)-expressing CD4+ and CD8+ T cells decreased significantly in EA patients after altitude treatment. The frequency of CRTH2+ Tregs as decreased significantly in all the asthma phenotypes as well as the frequency of ILC2 was significantly reduced in EA after altitude treatment. After 21 days of altitude therapy, CRTH2-expressing ILC2, CD4+ and CD8+ T cells and Treg cells showed attenuated responses to exogenous PGD2. Furthermore, PGD2 signaling via CRTH2 was found to diminish the suppressive function of CRTH2+ Tregs which partially normalized during high-altitude treatment. Improved asthma control was particularly evident in allergic asthma patients and correlated with decreased frequencies of CRTH2+ Treg cells in EA patients. Serum IL-5 and IL-13 decreased during climate treatment in asthma patients with high baseline levels. CONCLUSIONS Asthma treatment in high altitude reduced the type 2 immune response, corrected the increased CRTH2 expression and its dysregulated functions.
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Affiliation(s)
- Tadech Boonpiyathad
- Swiss Institute of Allergy and Asthma Research University of Zurich Davos Switzerland
- Department of Medicine Phramongkutklao Hospital Bangkok Thailand
- Christine Kühne Center for Allergy Research and Education Davos Switzerland
| | - Gertruda Capova
- Christine Kühne Center for Allergy Research and Education Davos Switzerland
- Hochgebirgsklinik Davos Davos Switzerland
| | - Hans‐Werner Duchna
- Christine Kühne Center for Allergy Research and Education Davos Switzerland
- Hochgebirgsklinik Davos Davos Switzerland
| | | | - Herve Farine
- Drug Discovery Idorsia Pharmaceuticals Ltd. Allschwil Switzerland
| | - Anita Dreher
- Swiss Institute of Allergy and Asthma Research University of Zurich Davos Switzerland
- Hochgebirgsklinik Davos Davos Switzerland
| | - Martine Clozel
- Drug Discovery Idorsia Pharmaceuticals Ltd. Allschwil Switzerland
| | | | | | - Nonhlanhla Lunjani
- Swiss Institute of Allergy and Asthma Research University of Zurich Davos Switzerland
- Christine Kühne Center for Allergy Research and Education Davos Switzerland
| | - David Mirer
- Swiss Institute of Allergy and Asthma Research University of Zurich Davos Switzerland
| | - Beate Rückert
- Swiss Institute of Allergy and Asthma Research University of Zurich Davos Switzerland
| | - Pattraporn Satitsuksanoa
- Swiss Institute of Allergy and Asthma Research University of Zurich Davos Switzerland
- Christine Kühne Center for Allergy Research and Education Davos Switzerland
| | - Ge Tan
- Swiss Institute of Allergy and Asthma Research University of Zurich Davos Switzerland
| | | | - Eugen Bersuch
- Christine Kühne Center for Allergy Research and Education Davos Switzerland
- Hochgebirgsklinik Davos Davos Switzerland
| | - Mübeccel Akdis
- Swiss Institute of Allergy and Asthma Research University of Zurich Davos Switzerland
| | | | - Ellen D. Renner
- Christine Kühne Center for Allergy Research and Education Davos Switzerland
- Hochgebirgsklinik Davos Davos Switzerland
- Chair and Institute of Environmental Medicine – UNIKA‐T TU Munich and Helmholtz Zentrum Munich Munich Germany
| | - Cezmi A. Akdis
- Swiss Institute of Allergy and Asthma Research University of Zurich Davos Switzerland
- Christine Kühne Center for Allergy Research and Education Davos Switzerland
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van Mierlo MMF, Totté JEE, Fieten KB, van den Broek TJ, Schuren FHJ, Pardo LM, Pasmans SGMA. The influence of treatment in alpine and moderate maritime climate on the composition of the skin microbiome in patients with difficult to treat atopic dermatitis. Clin Exp Allergy 2019; 49:1437-1445. [PMID: 31509295 DOI: 10.1111/cea.13492] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 08/06/2019] [Accepted: 09/02/2019] [Indexed: 12/22/2022]
Abstract
BACKGROUND The skin microbiome, characterized by an overgrowth of Staphylococcus aureus, plays an important role in the pathogenesis of atopic dermatitis (AD). Multidisciplinary treatment in alpine climate is known for its positive effect on disease severity in children with AD and can result in a different immune response compared with moderate maritime climate. However, the effect on the composition of the skin microbiome in AD is unknown. OBJECTIVE To determine the effect of treatment in alpine climate and moderate maritime climate on the microbiome for lesional and non-lesional skin in children with difficult to treat AD. RESULTS Alpine climate treatment led to a significant change in the microbiota on lesional skin, whereas no significant change was found after moderate maritime climate. On both lesional and non-lesional skin, we observed a significant increase in Shannon diversity and a significant decrease in both Staphylococcus abundance and S aureus load after alpine climate treatment. The decrease in S aureus was significantly larger on lesional skin following alpine climate treatment compared with moderate maritime climate treatment. Staphylococcus epidermidis load was stable over time. CONCLUSIONS AND CLINICAL RELEVANCE Alpine climate treatment leads to significant changes in the composition of the skin microbiome in children with AD, mainly caused by a reduction in the Staphylococcus genus. This study shows new perspectives in the potential mode of action for therapies in AD.
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Affiliation(s)
- Minke M F van Mierlo
- Department of Dermatology-Center of Paediatric Dermatology, Sophia Children's Hospital, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Joan E E Totté
- Department of Dermatology-Center of Paediatric Dermatology, Sophia Children's Hospital, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Karin B Fieten
- Department of Dermatology and Allergology, University Medical Center, Utrecht, The Netherlands.,Dutch Asthma Center Davos, Davos, Switzerland.,Swiss Institute of Allergy and Asthma Research (SIAF), University of Zürich, Davos, Switzerland
| | | | | | - Luba M Pardo
- Department of Dermatology-Center of Paediatric Dermatology, Sophia Children's Hospital, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Suzanne G M A Pasmans
- Department of Dermatology-Center of Paediatric Dermatology, Sophia Children's Hospital, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands.,Department of Dermatology and Allergology, University Medical Center, Utrecht, The Netherlands
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Saxer S, Schneider SR, Appenzeller P, Bader PR, Lichtblau M, Furian M, Sheraliev U, Estebesova B, Emilov B, Sooronbaev T, Bloch KE, Ulrich S. Asthma rehabilitation at high vs. low altitude: randomized parallel-group trial. BMC Pulm Med 2019; 19:134. [PMID: 31340793 PMCID: PMC6657156 DOI: 10.1186/s12890-019-0890-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 07/02/2019] [Indexed: 12/14/2022] Open
Abstract
Background To investigate the effect of asthma rehabilitation at high altitude (3100 m, HA) compared to low altitude (760 m, LA). Methods For this randomized parallel-group trial insufficiently controlled asthmatics (Asthma Control Questionnaire (ACQ) > 0.75) were randomly assigned to 3-week in-hospital rehabilitation comprising education, physical-&breathing-exercises at LA or HA. Co-primary outcomes assessed at 760 m were between group changes in peak expiratory flow (PEF)-variability, and ACQ) from baseline to end-rehabilitation and 3 months thereafter. Results 50 asthmatics were randomized [median (quartiles) LA: ACQ 2.7(1.7;3.2), PEF-variability 19%(14;33); HA: ACQ 2.0(1.6;3.0), PEF-variability 17%(12;32)]. The LA-group improved PEF-variability by median(95%CI) -7%(− 14 to 0, p = 0.033), ACQ − 1.4(− 2.2 to − 0.9, p < 0.001), and after 3 months by − 3%(− 18 to 2, p = 0.103) and − 0.9(− 1.3 to − 0.3, p = 0.002). The HA-group improved PEF-variability by − 10%(− 21 to − 3, p = 0.004), ACQ − 1.1(− 1.3 to − 0.7, p < 0.001), and after 3 months by − 9%(− 10 to − 3, p = 0.003) and − 0.2(− 0.9 to 0.4, p = 0.177). The additive effect of HA vs. LA directly after the rehabilitation on PEF-variability was − 6%(− 14 to 2), on ACQ 0.3(− 0.4 to 1.1) and after 3 months − 5%(− 14 to 5) respectively 0.4(− 0.4 to 1.1), all p = NS. Conclusion Asthma rehabilitation is highly effective in improving asthma control in terms of PEF-variability and symptoms, both at LA and HA similarly. Trial registration Clinicaltrials.gov: NCT02741583, Registered April 18, 2016. Electronic supplementary material The online version of this article (10.1186/s12890-019-0890-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Stéphanie Saxer
- Department of Pulmonology, UniversityHospital Zurich, Rämistrasse 100, CH-8091 , Zurich, Switzerland.,Department of Health Sciences & Health Policy, University of Lucerne, Lucerne, Switzerland
| | - Simon R Schneider
- Department of Pulmonology, UniversityHospital Zurich, Rämistrasse 100, CH-8091 , Zurich, Switzerland
| | - Paula Appenzeller
- Department of Pulmonology, UniversityHospital Zurich, Rämistrasse 100, CH-8091 , Zurich, Switzerland
| | - Patrick R Bader
- Department of Pulmonology, UniversityHospital Zurich, Rämistrasse 100, CH-8091 , Zurich, Switzerland
| | - Mona Lichtblau
- Department of Pulmonology, UniversityHospital Zurich, Rämistrasse 100, CH-8091 , Zurich, Switzerland
| | - Michael Furian
- Department of Pulmonology, UniversityHospital Zurich, Rämistrasse 100, CH-8091 , Zurich, Switzerland
| | - Ulan Sheraliev
- National Center for Cardiology and Internal Medicine, Bishkek, Kyrgyzstan
| | - Bermet Estebesova
- National Center for Cardiology and Internal Medicine, Bishkek, Kyrgyzstan
| | - Berik Emilov
- National Center for Cardiology and Internal Medicine, Bishkek, Kyrgyzstan
| | - Talant Sooronbaev
- National Center for Cardiology and Internal Medicine, Bishkek, Kyrgyzstan
| | - Konrad E Bloch
- Department of Pulmonology, UniversityHospital Zurich, Rämistrasse 100, CH-8091 , Zurich, Switzerland
| | - Silvia Ulrich
- Department of Pulmonology, UniversityHospital Zurich, Rämistrasse 100, CH-8091 , Zurich, Switzerland.
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14
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Duenas-Meza E, Torres-Duque CA, Correa-Vera E, Suárez M, Vásquez C, Jurado J, Del Socorro Medina M, Barón O, Pareja-Zabala MJ, Giraldo-Cadavid LF. High prevalence of house dust mite sensitization in children with severe asthma living at high altitude in a tropical country. Pediatr Pulmonol 2018; 53:1356-1361. [PMID: 29938928 DOI: 10.1002/ppul.24079] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 05/06/2018] [Indexed: 11/07/2022]
Abstract
BACKGROUND Some studies, mainly in Europe, have shown a low level of sensitization to house dust mite (HDM) allergens at high altitude (HA). Differently, some others in tropical countries have shown a higher level. The aim of this study was to evaluate allergens sensitization, including HDM, in children with severe asthma (SA), residents at HA in a tropical middle-income developing country. METHODS Observational, analytical, cross-sectional study in children aged 6-15 years old with SA at HA (2640 m). Skin prick tests (SPT), serum IgE, exhaled fraction of nitric oxide (FENO ), spirometry, and asthma questionnaire (ACT) were performed. Associations were explored by Pearson or Spearman coefficients. RESULTS We included 61 children. Most patients were male (61.3%), median age: 10 years (Interquartile range [IQR]: 8-12), median BMI: 17 kg/m2 (IQR: 16-20); Median of positive SPT: 2 (IQR: 2-3). At least one SPT was positive in 88.7% of patients and 87.9% were positive for at least one HDM. Serum IgE: 348 UI/mL (IQR: 154-760) and FENO : 22 ppb (IQR: 9-41). Prebronchodilator values were (% predicted): FVC: 109.7% (±15.5%), FEV1 : 98.4% (±16.3); FEV1 /FVC: 82% (±8%). SPT were inversely correlated with the FEV1 /FVC (Rho: -0.34; 95% CI: -0.55 a -0.09; P = 0.008). CONCLUSIONS These children with SA living at HA in a tropical middle-income developing country have a high prevalence of HDM sensitization. One explanation for this might be that tropical conditions, such as temperature and humidity, could modify the effect of the altitude on asthma.
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Affiliation(s)
- Elida Duenas-Meza
- Pediatric Pulmonology Section, Fundación Neumológica Colombiana, Bogotá, Colombia.,Research Department, Fundación Neumológica Colombiana, Bogotá, Colombia.,Universidad de La Sabana, Bogotá, Colombia
| | - Carlos A Torres-Duque
- Research Department, Fundación Neumológica Colombiana, Bogotá, Colombia.,Universidad de La Sabana, Bogotá, Colombia
| | | | - Miguel Suárez
- Pediatric Pulmonology Section, Fundación Neumológica Colombiana, Bogotá, Colombia
| | - Catalina Vásquez
- Pediatric Pulmonology Section, Fundación Neumológica Colombiana, Bogotá, Colombia
| | - Jenny Jurado
- Pediatric Pulmonology Section, Fundación Neumológica Colombiana, Bogotá, Colombia
| | | | - Oscar Barón
- Pediatric Pulmonology Section, Fundación Neumológica Colombiana, Bogotá, Colombia
| | - María J Pareja-Zabala
- Research Department, Fundación Neumológica Colombiana, Bogotá, Colombia.,Universidad de La Sabana, Bogotá, Colombia
| | - Luis F Giraldo-Cadavid
- Research Department, Fundación Neumológica Colombiana, Bogotá, Colombia.,Universidad de La Sabana, Bogotá, Colombia
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15
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Heeringa JJ, Fieten KB, Bruins FM, van Hoffen E, Knol EF, Pasmans SGMA, van Zelm MC. Treatment for moderate to severe atopic dermatitis in alpine and moderate maritime climates differentially affects helper T cells and memory B cells in children. Clin Exp Allergy 2018; 48:679-690. [PMID: 29575251 DOI: 10.1111/cea.13136] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Revised: 02/13/2018] [Accepted: 02/25/2018] [Indexed: 12/22/2022]
Abstract
BACKGROUND Treatment of atopic dermatitis (AD) is focused on topical anti-inflammatory therapy, epidermal barrier repair and trigger avoidance. Multidisciplinary treatment in both moderate maritime and alpine climates can successfully reduce disease activity in children with AD. However, it remains unclear whether abnormalities in B cell and T cell memory normalize and whether this differs between treatment strategies. OBJECTIVE To determine whether successful treatment in maritime and alpine climates normalizes B- and T lymphocytes in children with moderate to severe AD. METHODS The study was performed in the context of a trial (DAVOS trial, registered at Current Controlled Trials ISCRTN88136485) in which eighty-eight children with moderate to severe AD were randomized to 6 weeks of treatment in moderate maritime climate (outpatient setting) or in the alpine climate (inpatient setting). Before and directly after treatment, disease activity was determined with SA-EASI and serum TARC, and T cell and B cell subsets were quantified in blood. RESULTS Both treatment protocols achieved a significant decrease in disease activity, which was accompanied by a reduction in circulating memory Treg, transitional B cell and plasmablast numbers. Alpine climate treatment had a significantly greater effect on disease activity and was accompanied by a reduction in blood eosinophils and increases in memory B cells, CD8+ TemRO, CD4+ Tcm and CCR7+ Th2 subsets. CONCLUSIONS AND CLINICAL RELEVANCE Clinically successful treatment of AD induces changes in blood B- and T cell subsets reflecting reduced chronic inflammation. In addition, multidisciplinary inpatient treatment in the alpine climate specifically affects memory B cells, CD8+ T cells and Th2 cells. These cell types could represent good markers for treatment efficacy.
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Affiliation(s)
- J J Heeringa
- Department of Immunology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands.,Department of Pediatrics, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - K B Fieten
- Department of Dermatology and Allergology, University Medical Center, Utrecht, The Netherlands.,Merem Dutch Asthma Center Davos, Davos, Switzerland.,Swiss Institute of Allergy and Asthma Research (SIAF), University of Zürich, Davos, Switzerland
| | - F M Bruins
- Department of Dermatology and Allergology, University Medical Center, Utrecht, The Netherlands
| | - E van Hoffen
- Department of Dermatology and Allergology, University Medical Center, Utrecht, The Netherlands
| | - E F Knol
- Department of Dermatology and Allergology, University Medical Center, Utrecht, The Netherlands.,Department of Immunology, University Medical Center, Utrecht, The Netherlands
| | - S G M A Pasmans
- Department of Dermatology and Allergology, University Medical Center, Utrecht, The Netherlands
| | - M C van Zelm
- Department of Immunology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands.,Department of Immunology and Pathology, Central clinical school, Monash University, Melbourne, VIC, Australia.,Department of Allergy, Immunology & Respiratory Medicine, Alfred Hospital, Melbourne, VIC, Australia
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16
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Kulkarni N, Kantar A, Costella S, Ragazzo V, Piacentini G, Boner A, O'Callaghan C. Macrophage Phagocytosis and Allergen Avoidance in Children With Asthma. Front Pediatr 2018; 6:206. [PMID: 30116724 PMCID: PMC6082964 DOI: 10.3389/fped.2018.00206] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 07/02/2018] [Indexed: 01/07/2023] Open
Abstract
Background and Objective: Airway macrophages perform the crucial functions of presenting antigens, clearing pathogens, and apoptotic cells. Macrophage phagocytosis is increased in adults with mild asthma and allergen exposure is known to activate macrophages. However, it is not clear whether the mechanism behind this is due to a primary defect or environmental factors such as allergen or lipopolysaccaride (LPS) exposure. Our aim was to assess the phagocytic function of airway macrophages in children with mild to moderate asthma after residence in a low allergen\LPS environment at high altitude. Methods: Sputum induction was performed in children with asthma at baseline and after residence for a 3 weeks' period at a high-altitude asthma center that has very low ambient allergen levels. The markers of eosinophilic inflammation (including percentage of macrophage cytoplasm with red hue) and phagocytosis of fluorescein isothiocyanate-labeled, heat-killed Staphylococcus aureus by airway macrophages was analyzed. Internalized bacteria were quantified using confocal microscopy. Results: The median bacterial count [mean (standard deviation)] per macrophage was significantly lower [39.55 (4.51) vs. 73.26 (39.42) (p = 0.006)] after residence at high altitude. No association was observed between markers of eosinophilic inflammation and bacterial phagocytosis. Conclusions: The results suggest that the mechanism behind the enhanced phagocytosis of bacteria in childhood asthma may be secondary to allergen or possibly LPS exposure.
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Affiliation(s)
- Neeta Kulkarni
- Department of Infection, Immunity and Inflammation, Institute for Lung Health, University of Leicester, Leicester, United Kingdom
| | - Ahmad Kantar
- Pediatric Cough and Asthma Center, Istituti Ospedalieri Bergamaschi, University and Research Hospitals, Bergamo, Italy
| | - Silvia Costella
- High Altitude Paediatric Asthma Centre in Misurina, Pio XII Institute, Belluno, Italy
| | - Vincenzo Ragazzo
- Department of Pediatrics, Versilia Hospital, Lido di Camaiore, Italy
| | - Giorgio Piacentini
- Pediatrics Section, Department of Surgery, Dentistry, Paediatrics, and Gynaecology, University of Verona, Verona, Italy
| | - Attilio Boner
- Pediatrics Section, Department of Surgery, Dentistry, Paediatrics, and Gynaecology, University of Verona, Verona, Italy
| | - Christopher O'Callaghan
- Respiratory, Critical Care and Anaesthesia, UCL Great Ormond Street Institute of Child Health, NIHR Great Ormond Street Hospital Biomedical Research Centre, Great Ormond Street Children's Hospital, London, United Kingdom
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17
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Grafetstätter C, Gaisberger M, Prossegger J, Ritter M, Kolarž P, Pichler C, Thalhamer J, Hartl A. Does waterfall aerosol influence mucosal immunity and chronic stress? A randomized controlled clinical trial. J Physiol Anthropol 2017; 36:10. [PMID: 28086991 PMCID: PMC5237191 DOI: 10.1186/s40101-016-0117-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 11/07/2016] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND The specific microclimate of alpine waterfalls with high levels of ionized water aerosols has been suggested to trigger beneficial immunological and psychological effects. In the present three-armed randomized controlled clinical study, we focused on effects on (i) immunological reagibility, on (ii) physiological stress responses, and on (iii) stress-related psychological parameters. METHODS People with moderate to high stress levels (n = 65) spent an active sojourn with daily hiking tours in the National Park Hohe Tauern (Großkirchheim, Austria). Half of the group was exposed to water aerosol of an alpine waterfall for 1 h/day (first arm, n = 33), whereas the other half spent the same time at a distant site (second arm, n = 32). A third arm (control, n = 26) had no intervention (except vaccination) and stayed at home, maintaining their usual lifestyle. The effect of the interventions on the immune system was tested by oral vaccination with an approved cholera vaccine and measuring specific salivary IgA antibody titers. Lung function was determined by peak expiratory flow measurement. Electric skin conductance, heart rate, and adaption of respiration rate were assessed as physiological stress parameters. Psychological stress-related parameters were analyzed by questionnaires and scales. RESULTS Compared to the control group, both intervention groups showed improvement of the lung function and of most physiological stress test parameters. Analysis of the mucosal immune response revealed a waterfall-specific beneficial effect with elevated IgA titers in the waterfall group. In line with these results, exposure to waterfall revealed an additional benefit concerning psychological parameters such as subjective stress perception (measured via visual analog scale), the Global Severity Index (GSI), and the Positive Symptom Total (PST). CONCLUSIONS Our study provides new data, which strongly support an "added value" of exposure to waterfall microclimate when combined with a therapeutic sojourn at high altitude including regular physical activity.
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Affiliation(s)
- Carina Grafetstätter
- Institute of Ecomedicine, Paracelsus Medical University, Strubergasse 22, 5020 Salzburg, Austria
| | - Martin Gaisberger
- Institute of Physiology and Pathophysiology, Paracelsus Medical University, Strubergasse 22, 5020 Salzburg, Austria
- Gastein Research Institute, Paracelsus Medical University, Strubergasse 22, 5020 Salzburg, Austria
- Department for Radon Therapy Research, Ludwig Boltzmann Cluster for Arthritis and Rehabilitation, Strubergasse 22, 5020 Salzburg, Austria
| | - Johanna Prossegger
- Institute of Ecomedicine, Paracelsus Medical University, Strubergasse 22, 5020 Salzburg, Austria
| | - Markus Ritter
- Institute of Physiology and Pathophysiology, Paracelsus Medical University, Strubergasse 22, 5020 Salzburg, Austria
- Gastein Research Institute, Paracelsus Medical University, Strubergasse 22, 5020 Salzburg, Austria
- Department for Radon Therapy Research, Ludwig Boltzmann Cluster for Arthritis and Rehabilitation, Strubergasse 22, 5020 Salzburg, Austria
| | - Predrag Kolarž
- Institute of Physics, University of Belgrade, Pregrevica 118, 11080 Belgrade, Serbia
| | - Christina Pichler
- Institute of Ecomedicine, Paracelsus Medical University, Strubergasse 22, 5020 Salzburg, Austria
| | - Josef Thalhamer
- Department of Molecular Biology, University of Salzburg, Hellbrunner Str. 34, 5020 Salzburg, Austria
| | - Arnulf Hartl
- Institute of Ecomedicine, Paracelsus Medical University, Strubergasse 22, 5020 Salzburg, Austria
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18
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Fdez-Arroyabe P, Roye D. Co-creation and Participatory Design of Big Data Infrastructures on the Field of Human Health Related Climate Services. STUDIES IN BIG DATA 2017. [DOI: 10.1007/978-3-319-49736-5_9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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19
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Prasad B. Refractory asthma - An old disorder: Novel approaches for effective control. Med J Armed Forces India 2016; 72:277-80. [PMID: 27546969 PMCID: PMC4982976 DOI: 10.1016/j.mjafi.2016.04.006] [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: 01/06/2016] [Accepted: 04/25/2016] [Indexed: 11/24/2022] Open
Abstract
Bronchial asthma is an inflammatory disorder of airways characterized by hyper-responsiveness to a wide range of triggers and is associated with variable airflow obstruction that remits spontaneously or with the treatment. Several phenotype of asthma not responding to the currently acceptable standard therapy of high dose inhaled gluco-corticosteroids along with along acting β2 agonists come under the purview of refractory asthma. This condition is a heterogeneous and complex disease that requires a multi-disciplinary approach to identify accurately various sub-phenotypes to enable improved understanding of the pathogenesis and development of effective management strategies including use of novel methods and targeted therapy.
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20
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Alsamghan AS, Awadalla NJ, Mohamad YA, Hassan AM. Influence of altitude on pediatric asthma severity and quality of life in southwestern Saudi Arabia. EGYPTIAN JOURNAL OF CHEST DISEASES AND TUBERCULOSIS 2016. [DOI: 10.1016/j.ejcdt.2016.04.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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21
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Han CTJ, Flaherty G. Profile of Travelers With Preexisting Medical Conditions Attending a Specialist Travel Medicine Clinic in Ireland. J Travel Med 2015; 22:312-7. [PMID: 26095866 DOI: 10.1111/jtm.12221] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Revised: 04/08/2015] [Accepted: 04/17/2015] [Indexed: 12/17/2022]
Abstract
BACKGROUND Patients with complex medical comorbidities travel for protracted periods to remote destinations, often with limited access to medical care. Few descriptions are available of their preexisting health burden. This study aimed to characterize preexisting medical conditions and medications of travelers seeking pre-travel health advice at a specialized travel medicine clinic. METHODS Records of travelers attending the Galway Tropical Medical Bureau clinic between 2008 and 2014 were examined and information relating to past medical history was entered into a database. Data were recorded only where the traveler had a documented medical history and/or was taking medications. RESULTS Of the 4,817 records available, 56% had a documented medical history and 24% listed medications. The majority of travelers with preexisting conditions were female. The mean age of the cohort was 31.68 years. The mean period remaining before the planned trip was 40 days. Southeast Asia was the most popular single destination, and 17% of travelers with medical conditions were traveling alone. The most frequently reported conditions were allergies (20%), insect bite sensitivity (15%), asthma (11%), psychiatric conditions (4%), and hypertension (3%). Of the 30 diabetic travelers, 14 required insulin; 4.5% of travelers were taking immunosuppressant drugs, including corticosteroids. Half of the female travelers were taking the oral contraceptive pill while 11 travelers were pregnant at the time of their pre-travel consultation. CONCLUSIONS This study provides an insight into the medical profile of travelers attending a travel health clinic. The diverse range of diseases reported highlights the importance of educating physicians and nurses about the specific travel health risks associated with particular conditions. Knowledge of the effects of travel on underlying medical conditions will inform the pre-travel health consultation.
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Affiliation(s)
- Calvin Teo Jia Han
- Department of Medicine, School of Medicine, National University of Ireland, Galway, Ireland.,School of Medicine, International Medical University, Kuala Lumpur, Malaysia
| | - Gerard Flaherty
- Department of Medicine, School of Medicine, National University of Ireland, Galway, Ireland.,School of Medicine, International Medical University, Kuala Lumpur, Malaysia
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22
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Baççıoğlu A, Söğüt A, Kılıç Ö, Beyhun E. The Prevalence of Allergic Diseases and Associated Risk Factors in School-Age Children and Adults in Erzurum, Turkey. Turk Thorac J 2015; 16:68-72. [PMID: 29404081 DOI: 10.5152/ttd.2015.4229] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2014] [Accepted: 09/12/2014] [Indexed: 11/22/2022]
Abstract
OBJECTIVES Allergic diseases are a major public health problem, owing to their socioeconomic burden and high frequency. The aim of this study was to assess the prevalence and risk factors of allergic diseases in adults and children in the province of Erzurum. MATERIAL AND METHODS Primary school students aged 11-12 years old filled out the International Study of Asthma and Allergies in Childhood (ISAAC) phase II questionnaire, and their parents filled out the European Community Respiratory Health Survey (ECRHS) questionnaire by themselves. We enrolled 494 questionnaires for ISAAC and 946 for ECRHS. RESULTS The survey response rates were 91.8% for ISAAC and 87% for ECRHS. The frequencies of doctor-diagnosed asthma, allergic rhinitis, conjunctivitis, atopic dermatitis, and food allergy in children were 11.9%, 8.9%, 27.3%, 3.6%, and 6.5%, respectively. In adults, the rates of wheezing in the chest, accompanying shortness of breath, and wheezing in the absence of flu within the last 12 months were 8%, 8%, and 5.5%, respectively, whereas the rate of asthma attack in the last 12 months was 2.9%, the rate of asthma medication usage was 2.6%, and the frequency of allergic rhinitis was 1.6%. The determined risk factors for childhood were "duration of attending a nursery" for asthma (p=0.02, OR=2.51, 95% CI=1.14-5.53), "having ever been to a nursery" for atopic dermatitis (p=0.02, OR=3.83, 95% CI=1.24-11.8), and "a family history of rhinitis" for food allergy (p=0.01, OR=2.94, 95% CI=1.13-6-57). CONCLUSION The prevalence of allergic diseases in children and adults in Erzurum was found to be lower than in studies conducted throughout Turkey and in western regions of the Country. Going to a nursery, the length of nursery education, and a family history of rhinitis were identified as the risk factors for allergic diseases in children. The identification of regional risk factors and taking preventive measures in this regard may provide a reduction in the incidence of allergic diseases.
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Affiliation(s)
- Ayşe Baççıoğlu
- Clinic of Adult Immunology and Allergy Diseases, Ministry Health Erzurum Area Training and Research Hospital, Erzurum, Turkey
| | - Ayhan Söğüt
- Clinic of Child Immunology and Allergy Diseases, Ministry Health Erzurum Area Training and Research Hospital, Erzurum, Turkey
| | - Ömer Kılıç
- Clinic of Child Infection Diseases, Ministry Health Erzurum Area Training and Research Hospital, Erzurum, Turkey
| | - Ercüment Beyhun
- Department of Public Health, Atatürk University Faculty of Medicine, Erzurum, Turkey
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23
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Fieten KB, Weststrate ACG, van Zuuren EJ, Bruijnzeel-Koomen CA, Pasmans SGMA. Alpine climate treatment of atopic dermatitis: a systematic review. Allergy 2015; 70:12-25. [PMID: 25130620 DOI: 10.1111/all.12514] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/12/2014] [Indexed: 11/28/2022]
Abstract
Climate therapy has been used for decades in the treatment of atopic dermatitis (AD), but evidence of its effectiveness has not yet been assessed systematically. A systematic literature search in Medline, Embase, and the Cochrane library was performed to identify all original studies concerning alpine climate treatment. The risk of bias of individual studies was assessed following the Cochrane Handbook, and level of evidence was rated using GRADE guidelines. Fifteen observational studies were included concerning 40 148 patients. Four studies concerning 2670 patients presented follow-up data over a period of 1 year. Disease activity decreased in the majority of patients during treatment (96% of n = 39 006) and 12-month follow-up (64% of n = 2670). Topical corticosteroid use could often be reduced or stopped during treatment (82% of n = 1178) and during 12-month follow-up (72% of n = 3008). Quality assessment showed serious study limitations, therefore resulting in a very low level of evidence for the described outcomes. Randomized controlled trials designed with a follow-up period including well-defined patient populations, detailed description and measurement of applied interventions during climate therapy and using validated outcomes including cost-effectiveness parameters, are required to improve the evidence for alpine climate therapy as an effective treatment for patients with AD.
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Affiliation(s)
- K. B. Fieten
- Department of (Pediatric) Dermatology and Allergology; University Medical Center Utrecht; Utrecht the Netherlands
- High Altitude Clinic Merem Dutch Asthma Center Davos; Davos Switzerland
| | - A. C. G. Weststrate
- Department of (Pediatric) Dermatology and Allergology; University Medical Center Utrecht; Utrecht the Netherlands
| | - E. J. van Zuuren
- Department of Dermatology; Leiden University Medical Center; Leiden The Netherlands
| | - C. A. Bruijnzeel-Koomen
- Department of (Pediatric) Dermatology and Allergology; University Medical Center Utrecht; Utrecht the Netherlands
| | - S. G. M. A. Pasmans
- Department of (Pediatric) Dermatology and Allergology; University Medical Center Utrecht; Utrecht the Netherlands
- Department of Pediatric Dermatology; Sophia Children's Hospital; Erasmus MC University Medical Center Rotterdam; Rotterdam the Netherlands
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24
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Abstract
Recent studies on asthma have demonstrated multiple phenotypes, based on the clinical characteristics of the disease. With the current interest in personalized medicine, the question arises whether the presence of allergic sensitization has any relevance for these phenotypes and the management of asthma. This review will examine the current knowledge of asthma phenotypes and the impact of atopy on asthma diagnosis and severity in adults. In addition, this review will address whether therapies targeted at the atopic axis help improve asthma outcomes, including lung function indices and exacerbations.
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Affiliation(s)
- Sameer K Mathur
- University of Wisconsin School of Medicine, Madison, WI, USA,
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Eberlein B, Huss-Marp J, Pfab F, Fischer R, Franz R, Schlich M, Leibl M, Allertseder V, Liptak J, Kriegisch M, Hennico R, Latotski J, Ebner von Eschenbach C, Darsow U, Buters J, Behrendt H, Huber R, Ring J. Influence of alpine mountain climate of Bavaria on patients with atopic diseases: studies at the Environmental Research Station Schneefernerhaus (UFS - Zugspitze) - a pilot study. Clin Transl Allergy 2014; 4:17. [PMID: 26085923 PMCID: PMC4470350 DOI: 10.1186/2045-7022-4-17] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Accepted: 03/25/2014] [Indexed: 11/10/2022] Open
Abstract
Mountain and maritime climate therapy takes advantage of specific climatic conditions to treat chronic allergic diseases. It was the aim of the study to investigate effects of a 5 day sojourn on atopic diseases at the highest German mountain. In this pilot study 18 patients with grass pollen-induced rhinoconjunctivitis, atopic ezcema or asthma and 11 non-allergic controls were included. Skin physiology parameters, changes of the respiratory and nasal functions, subjective symptoms and blood parameters were measured during a 5-day observation period in the Environmental Research Station Schneefernerhaus (UFS) at the moderate altitude mountain region (Zugspitze; 2650 m alt.) compared to a low altitude area (Munich; 519 m alt.). Several of the skin physiology parameters changed significantly during the observation period (decrease of skin hydration, increase of skin smoothness, skin roughness, skin scaliness and pH-value). In patients with atopic eczema, the SCORAD (Severity Scoring of Atopic Dermatitis) and the scores of the DIELH (Deutsches Instrument zur Erfassung der Lebensqualität bei Hauterkrankungen) did not change significantly. Histamine induced itch decreased significantly. Parameters of nasal function did not change significantly. Several lung parameters showed a slight, but statistically significant improvement (forced expiratory volume in one second/volume capacity [FEV1/VC], peak expiratory flow [PEF], maximum expiratory flow at 50% of vital capacity [MEF 50], maximal mid-expiratory flow between 25% and 75% of vital capacity [MMFEF 25/75]), whereas the vital capacity (VC) decreased significantly. ECP (eosinophil cationic protein) in the serum and parameters of blood count changed significantly. These results show that the benefit of a moderate altitude mountain climate sojourn over a period of 5 days differs in depending on the atopic disease. Especially asthma parameters and itching of the skin improved. It would be interesting to assess the parameters during longer observation periods in alpine climate.
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Affiliation(s)
- Bernadette Eberlein
- Department of Dermatology and Allergy Biederstein, Technical University Munich, Munich, Germany ; Center of Allergy and Environment (ZAUM, Zentrum Allergie und Umwelt), Technische Universität and Helmholtz Center, Munich, Germany
| | - Johannes Huss-Marp
- Center of Allergy and Environment (ZAUM, Zentrum Allergie und Umwelt), Technische Universität and Helmholtz Center, Munich, Germany
| | - Florian Pfab
- Center of Allergy and Environment (ZAUM, Zentrum Allergie und Umwelt), Technische Universität and Helmholtz Center, Munich, Germany
| | - Rainald Fischer
- Division of Respiratory Medicine Campus Innenstadt, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Regina Franz
- Department of Dermatology and Allergy Biederstein, Technical University Munich, Munich, Germany
| | - Michele Schlich
- Department of Dermatology and Allergy Biederstein, Technical University Munich, Munich, Germany
| | - Maria Leibl
- Department of Dermatology and Allergy Biederstein, Technical University Munich, Munich, Germany
| | - Veronika Allertseder
- Department of Dermatology and Allergy Biederstein, Technical University Munich, Munich, Germany
| | - Jarmila Liptak
- Department of Dermatology and Allergy Biederstein, Technical University Munich, Munich, Germany
| | - Marie Kriegisch
- Center of Allergy and Environment (ZAUM, Zentrum Allergie und Umwelt), Technische Universität and Helmholtz Center, Munich, Germany
| | - Romain Hennico
- Center of Allergy and Environment (ZAUM, Zentrum Allergie und Umwelt), Technische Universität and Helmholtz Center, Munich, Germany
| | - Julia Latotski
- Center of Allergy and Environment (ZAUM, Zentrum Allergie und Umwelt), Technische Universität and Helmholtz Center, Munich, Germany
| | - Cordula Ebner von Eschenbach
- Center of Allergy and Environment (ZAUM, Zentrum Allergie und Umwelt), Technische Universität and Helmholtz Center, Munich, Germany
| | - Ulf Darsow
- Department of Dermatology and Allergy Biederstein, Technical University Munich, Munich, Germany
| | - Jeroen Buters
- Center of Allergy and Environment (ZAUM, Zentrum Allergie und Umwelt), Technische Universität and Helmholtz Center, Munich, Germany
| | - Heidrun Behrendt
- Center of Allergy and Environment (ZAUM, Zentrum Allergie und Umwelt), Technische Universität and Helmholtz Center, Munich, Germany
| | - Rudolf Huber
- Division of Respiratory Medicine Campus Innenstadt, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Johannes Ring
- Department of Dermatology and Allergy Biederstein, Technical University Munich, Munich, Germany
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Fieten KB, Zijlstra WT, van Os-Medendorp H, Meijer Y, Venema MU, Rijssenbeek-Nouwens L, l'Hoir MP, Bruijnzeel-Koomen CA, Pasmans SGMA. Comparing high altitude treatment with current best care in Dutch children with moderate to severe atopic dermatitis (and asthma): study protocol for a pragmatic randomized controlled trial (DAVOS trial). Trials 2014; 15:94. [PMID: 24670079 PMCID: PMC3975250 DOI: 10.1186/1745-6215-15-94] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Accepted: 03/13/2014] [Indexed: 01/07/2023] Open
Abstract
Background About 10 to 20% of children in West European countries have atopic dermatitis (AD), often as part of the atopic syndrome. The full atopic syndrome also consists of allergic asthma, allergic rhinitis and food allergy. Treatment approaches for atopic dermatitis and asthma include intermittent anti-inflammatory therapy with corticosteroids, health education and self-management training. However, symptoms persist in a subgroup of patients. Several observational studies have shown significant improvement in clinical symptoms in children and adults with atopic dermatitis or asthma after treatment at high altitude, but evidence on the efficacy when compared to treatment at sea level is still lacking. Methods/Design This study is a pragmatic randomized controlled trial for children with moderate to severe AD within the atopic syndrome. Patients are eligible for enrolment in the study if they are: diagnosed with moderate to severe AD within the atopic syndrome, aged between 8 and 18 years, fluent in the Dutch language, have internet access at home, able to use the digital patient system Digital Eczema Center Utrecht (DECU), willing and able to stay in Davos for a six week treatment period. All data are collected at the Wilhelmina Children’s Hospital and DECU. Patients are randomized over two groups. The first group receives multidisciplinary inpatient treatment during six weeks at the Dutch Asthma Center in Davos, Switzerland. The second group receives multidisciplinary treatment during six weeks at the outpatient clinic of the Wilhelmina Children’s Hospital, Utrecht, the Netherlands. The trial is not conducted as a blind trial. The trial is designed with three components: psychosocial, clinical and translational. Primary outcomes are coping with itch, quality of life and disease activity. Secondary outcomes include asthma control, medication use, parental quality of life, social and emotional wellbeing of the child and translational parameters. Discussion The results of this trial will provide evidence for the efficacy of high altitude treatment compared to treatment at sea level for children with moderate to severe AD. Trial Registration Current Controlled Trials ISRCTN88136485.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Suzanne G M A Pasmans
- Department of (Pediatric) Dermatology and Allergology, Wilhelmina Children's Hospital, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands.
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van de Griendt EJ, Verkleij M, Douwes JM, van Aalderen WMC, Geenen R. Problematic severe asthma in children treated at high altitude: tapering the dose while improving control. J Asthma 2014; 51:315-9. [PMID: 24304045 DOI: 10.3109/02770903.2013.871557] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Multidisciplinary treatment at high altitude is a possible treatment option for problematic severe asthma (PSA) in children. This management can result in the tapering of inhaled corticosteroids. AIM Our aim was to analyze the effect of multidisciplinary treatment at high altitude, notably the ability to taper corticosteroids. To get an insight into possible factors influencing tapering, we examined whether demographic variables, disease control and quality of life at treatment entrance could predict the tapering of corticosteroids. METHODS This prospective open-phase cohort study analyzed the data of 43 children aged 8-17 years referred to a specialized high altitude treatment centre. Lung function (FEV1, FEV1/VC), inflammation (FeNO), medication level, asthma control (ACT) and quality of life [PAQLQ(S)] were evaluated on admission and at discharge. RESULTS Thirty-two (74%) children fulfilled PSA criteria. Three (7%) children used daily oral steroids. After 72 ± 30 (mean ± SD) days of treatment, the mean dosage of inhaled corticosteroids (ICS) could be significantly reduced from 1315 μg ± 666 budesonide equivalent to 1132 μg ± 514. Oral steroid maintenance therapy could be stopped in all patients. FeNO, asthma control and quality of life improved (p < 0.001) from admission to discharge; FEV1 was in the normal range on both occasions. Apart from ICS levels at entrance, multiple regression analyses did not show any associated factor predicting the reduction of ICS dosage during treatment. CONCLUSION The results indicate that high altitude treatment may be a treatment option for children with PSA, but it is not possible to predict ICS tapering off from health status variables at treatment entrance.
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Affiliation(s)
- Erik-Jonas van de Griendt
- Department of Pediatric Respiratory Medicine and Allergy, Emma Children's Hospital, Academic Medical Center , Amsterdam , The Netherlands
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28
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Galera C, Demoly P. Stratégies thérapeutiques dans l’allergie aux acariens. REVUE FRANCAISE D ALLERGOLOGIE 2013. [DOI: 10.1016/s1877-0320(13)70050-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Massimo T, Blank C, Strasser B, Schobersberger W. Does climate therapy at moderate altitudes improve pulmonary function in asthma patients? A systematic review. Sleep Breath 2013; 18:195-206. [PMID: 23775828 DOI: 10.1007/s11325-013-0870-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Revised: 05/09/2013] [Accepted: 05/30/2013] [Indexed: 01/08/2023]
Abstract
PURPOSE Allergic bronchial asthma is one of the most common chronic diseases worldwide. For many years, the climate at moderate altitude has been used as an alternative therapy for patients suffering from bronchial asthma. The aim of such therapy is to reduce the medication dose and to improve the quality of life for each patient. The aim of our current work was to assess published data evaluating the effects of climate therapy at moderate altitude on the health status of patients with bronchial asthma. The health status is represented through surrogate parameters for the pulmonary function (forced expiratory volume in one second (FEV1)), bronchial hyperresponsiveness (PC20), and inflammation (total number of eosinophils, eosinophilic cationic protein, and exhaled nitric oxide). METHODS Our systematic review included randomized controlled trials (RCTs) and single-armed studies with adults and children participating. Included in our review were climate therapies occurring at moderate altitudes between 1,500 and 2,500 m and evaluation of patient FEV1 or PC20 values. RESULTS A literature research in MEDLINE and EMBASE identified three RCTs, two clinically controlled trials, and 15 single-armed studies. Analysis revealed a lack of evidence regarding the moderate altitude therapy arising from small sample sizes, deficits in documentation, and heterogeneous results. Most of the studies, however, showed a tendency for improvement of the analyzed parameters. CONCLUSIONS The currently available data do not allow for valid and generalizable recommendations with respect to moderate altitude therapy for patients with allergic bronchial asthma. There is a need for additional, qualitatively strong research including larger sample sizes and randomized, controlled trial design.
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Affiliation(s)
- Tanja Massimo
- Institute for Sports Medicine, Alpine Medicine & Health Tourism, University for Health Sciences, Medical Informatics and Technology (UMIT), Hall in Tirol, Innsbruck, Austria
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Arshad SH, Dharmage SC, Ferreira F, Fixman ED, Gadermaier G, Hauser M, Sampson AP, Teran LM, Wallner M, Wardlaw AJ. Developments in the field of allergy in 2011 through the eyes of Clinical and Experimental Allergy. Clin Exp Allergy 2013. [PMID: 23181787 DOI: 10.1111/cea.12037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
As in previous years, we felt it would be of value to our readership to summarize the new information provided by the authors who have published in Clinical and Experimental Allergy in 2011 and set this in the context of recent advances in our understanding of the pathogenesis and management of allergic disease in all its many manifestations. In 2011, about 210 articles were published in Clinical and Experimental Allergy including editorials, reviews, opinion articles, guidelines, letters, book reviews and of course at the heart of the journal, papers containing original data. As before, this review is divided into sections based on the way the journal is structured, although this year we have grouped together all the papers dealing with mechanisms of allergic disease, whether they involve patients (clinical mechanisms), pure in vitro studies (basic mechanisms) or animal models (experimental models), as we felt this was a more coherent way to deal with the subject. In the field of asthma and rhinitis, the relationship between airway inflammation and airway dysfunction was of perennial interest to investigators, as were phenotypes and biomarkers. Aspirin hypersensitivity appeared in studies in several papers and there was new interest in asthma in the elderly. The mechanisms involved in allergic disease describe advances in our understanding of T cell responses, the relationship between inflammation and disease, mast cell and basophil activation, steroid resistance and novel therapies. In the section dealing with epidemiology, studies seeking to identify risk factors for allergic disease including vitamin D are prominent, as once again are studies investigating gene-environment interactions. The clinical allergy section focuses on drug allergy, food allergy and immunotherapy. The area of oral immunotherapy for food allergy is well covered and we were grateful to Stephen Durham for guest editing an outstanding special issue on immunotherapy in the centenary year of Leonard Noon's pioneering work. Lastly, in the field of allergens, the interest in component-resolved diagnosis continues to grow and there are also articles describing important novel cultivars and the effect of food processing on the allergenic properties of foods. Another terrific year, full of important and high-quality work,which the journal has been proud to bring to the allergy community.
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Affiliation(s)
- S H Arshad
- David Hide Asthma and Allergy Research Centre, Isle of Wight, UK
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Mathew J, Aronow WS, Chandy D. Therapeutic options for severe asthma. Arch Med Sci 2012; 8:589-97. [PMID: 23056066 PMCID: PMC3460493 DOI: 10.5114/aoms.2012.30280] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2012] [Revised: 03/22/2012] [Accepted: 03/22/2012] [Indexed: 11/17/2022] Open
Abstract
As the overall prevalence of asthma has escalated in the past decades, so has the population of patients with severe asthma. This condition is often difficult to manage due to the relative limitation of effective therapeutic options for the physician and the social and economic burden of the disease on the patient. Management should include an evaluation and elimination of modifiable risk factors such as smoking, allergen exposure, obesity and non-adherence, as well as therapy for co-morbidities like gastro-esophageal reflux disease and obstructive sleep apnea. Current treatment options include conventional agents such as inhalational corticosteroids, long acting β(2) agonists, leukotriene antagonists, and oral corticosteroids. Less conventional treatment options include immunotherapy with methotrexate, cyclosporine and tacrolimus, biological drugs like monoclonal antibodies, tumor necrosis factor-α blockers and oligonucleotides, phosphodiesterase inhibitors, antimicrobials and bronchial thermoplasty.
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Affiliation(s)
- Jilcy Mathew
- Divisions of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, New York Medical College, Valhalla, USA
| | - Wilbert S. Aronow
- Divisions of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, New York Medical College, Valhalla, USA
- Cardiology Division, Department of Medicine, New York Medical College, Valhalla, USA
| | - Dipak Chandy
- Divisions of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, New York Medical College, Valhalla, USA
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Abstract
HDM allergy is associated with asthma, allergic rhinitis and atopic dermatitis. In many countries childhood asthma is predominantly found in HDM-allergic children with their probability of developing disease being proportional to their IgE antibody titers and the early development of Th2 responses. While the pathogenesis is complex and increasingly linked to infection the immunologically-based allergen immunotherapy and anti-IgE antibody therapy are highly beneficial. Immunotherapy could be a short-term treatment providing lifelong relief but the current regimens depend on repeated administration of allergen over years. Immunological investigations point to a contribution of responses outside the Th2 pathway and multiple potential but unproven control mechanisms. Over half of the IgE antibodies are directed to the group 1 and 2 allergens with most of remainder to the group 4, 5, 7 and 21 allergens. This hierarchy found in high and low responders provides a platform for introducing defined allergens into immunotherapy and defined reagents for investigation.
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Affiliation(s)
- Wayne R Thomas
- Centre for Child Health Research, University of Western Australia. wayne @ichr.uwa.edu.au
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Gaisberger M, Šanović R, Dobias H, Kolarž P, Moder A, Thalhamer J, Selimović A, Huttegger I, Ritter M, Hartl A. Effects of ionized waterfall aerosol on pediatric allergic asthma. J Asthma 2012; 49:830-8. [PMID: 22861198 DOI: 10.3109/02770903.2012.705408] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
OBJECTIVE Ionized water aerosols have been suggested to exert beneficial health effects on pediatric allergic asthma. Their effect was evaluated in a randomized controlled clinical trial as part of a summer asthma camp. METHODS Asthmatic allergic children (n = 54) spent 3 weeks in an alpine asthma camp; half of the group was exposed to water aerosol of an alpine waterfall for 1 hour per day, whereas the other half spent the same time at a "control site". Immunological analysis, lung function testing, and fractional exhaled nitric oxide (FeNO) testing were performed during the stay, and sustaining effects were evaluated 2 months later. Symptom score testing was done over a period of 140 days. RESULTS The water aerosol group showed a significant improvement in all lung function parameters, whereas only the peak expiratory flow improved in the control group. All patients showed a significant improvement in symptom score and a significant decrease in FeNO after the camp. Only the water aerosol group exhibited a long-lasting effect on asthma symptoms, lung function, and inflammation in the follow-up examination. Induction of interleukin (IL)-10 and regulatory T (Treg) cells was measured in both groups, with a pronounced increase in the water aerosol group. IL-13 was significantly decreased in both groups, whereas IL-5 and eosinophil cationic protein were decreased only in the water aerosol group. CONCLUSIONS Our findings confirm the induction of Treg cells and reduction in inflammation by climate therapy. They indicate a synergistic effect of water aerosols resulting in a long-lasting beneficial effect on asthma symptoms, lung function, and airway inflammation.
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Affiliation(s)
- Martin Gaisberger
- Institute of Physiology and Pathophysiology, Paracelsus Medical University, Salzburg, Austria
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Les traitements de l’allergie dans la prise en charge de l’asthme selon l’âge. Arch Pediatr 2012. [DOI: 10.1016/s0929-693x(12)71245-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Abstract
Severe asthma is considered a heterogeneous disease in which a variety of clinical, physiological and inflammatory markers determine disease severity. Pivotal studies in the last 5 years have led to substantial progress in many areas, ranging from a more accurate definition of truly severe, refractory asthma, to classification of the disease into distinct clinical phenotypes, and introduction of new therapies. This review focuses on three common clinical phenotypes of severe asthma in adults (early onset severe allergic asthma, late onset non-atopic eosinophilic asthma, late onset non-eosinophilic asthma with obesity), and provides an overview of recent developments regarding treatment options that are best suited for each of these phenotypes.
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Affiliation(s)
- S Hashimoto
- Department of Respiratory Medicine, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands.
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