1
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Buhl R, Bals R, Baur X, Berdel D, Criée CP, Gappa M, Gillissen A, Greulich T, Haidl P, Hamelmann E, Horak F, Kardos P, Kenn K, Klimek L, Korn S, Magnussen H, Nowak D, Pfaar O, Rabe KF, Riedler J, Ritz T, Schultz K, Schuster A, Spindler T, Taube C, Vogelmeier C, von Leupoldt A, Wantke F, Wildhaber J, Worth H, Zacharasiewicz A, Lommatzsch M. [Guideline for the Diagnosis and Treatment of Asthma - Addendum 2020 - Guideline of the German Respiratory Society and the German Atemwegsliga in Cooperation with the Paediatric Respiratory Society and the Austrian Society of Pneumology]. Pneumologie 2021; 75:191-200. [PMID: 33728628 DOI: 10.1055/a-1352-0296] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The present addendum of the guideline for the diagnosis and treatment of asthma (2017) complements new insights into the diagnosis and management of asthma as well as for the newly approved drugs for the treatment of asthma. Current, evidence-based recommendations on diagnostic and therapeutic approaches are presented for children and adolescents as well as for adults with asthma.
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Affiliation(s)
- R Buhl
- Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Schwerpunkt Pneumologie, III. Medizinische Klinik, Mainz
| | - R Bals
- Universitätsklinikum des Saarlandes, Klinik für Innere Medizin V, Homburg/Saar
| | - X Baur
- Haut- und Lasercentrum, Standort Berlin, Berlin
| | | | - C-P Criée
- Evangelisches Krankenhaus Göttingen Weende, Abteilung für Pneumologie, Bovenden-Lenglern
| | - M Gappa
- Evangelisches Krankenhaus Düsseldorf, Klinik für Kinder und Jugendmedizin, Düsseldorf
| | - A Gillissen
- Klinikum Am Steinenberg, Ermstalklinik, Medizinische Klinik III/Innere Medizin und Pneumologie, Reutlingen-Bad Urach
| | - T Greulich
- Universitätsklinikum Gießen und Marburg, Klinik für Innere Medizin mit Schwerpunkt Pneumologie, Marburg
| | - P Haidl
- Fachkrankenhaus Kloster Grafschaft GmbH, Abteilung Pneumologie II, Schmallenberg
| | - E Hamelmann
- Universitäts-Klinikum OWL, Universität Bielefeld, Kinderzentrum Bethel, Bielefeld
| | - F Horak
- Allergiezentrum Wien West, Wien
| | - P Kardos
- Lungenpraxis an der Klinik Maingau vom Roten Kreuz, Frankfurt am Main
| | - K Kenn
- Philips Universität Marburg, Lehrstuhl für pneumologische Rehabilitation, Marburg
| | - L Klimek
- Zentrum für Rhinologie und Allergologie, Wiesbaden
| | - S Korn
- Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Schwerpunkt Pneumologie, III. Medizinische Klinik, Mainz
| | - H Magnussen
- Pneumologisches Forschungsinstitut an der LungenClinic Grosshansdorf GmbH, Großhansdorf
| | - D Nowak
- Klinikum der Universität München, Institut und Poliklinik für Arbeits-, Sozial- und Umweltmedizin, LMU München
| | - O Pfaar
- Klinik für Hals-, Nasen-und Ohrenheilkunde, Sektion Rhinologie und Allergologie, Universitätsklinikum Gießen und Marburg GmbH, Philipps-Universität Marburg, Marburg
| | - K F Rabe
- LungenClinic Grosshansdorf GmbH, Abteilung für Pneumologie, Großhansdorf
| | - J Riedler
- Kardinal Schwarzenberg Klinikum, Kinder- und Jugendmedizin, Schwarzach im Pongau, Österreich
| | - T Ritz
- Southern Methodist University, Department of Psychology, Dallas, USA
| | - K Schultz
- Klinik Bad Reichenhall, Zentrum für Rehabilitation, Pneumologie und Orthopädie, Bad Reichenhall
| | - A Schuster
- Universitätsklinikum Düsseldorf, Zentrum für Kinder- und Jugendmedizin, Düsseldorf
| | - T Spindler
- Hochgebirgsklinik Davos, Abteilung für Kinder und Jugendliche, Davos, Schweiz
| | - C Taube
- Universitätsmedizin Essen, Ruhrlandklinik, Klinik für Pneumologie, Essen
| | - C Vogelmeier
- Universitätsklinikum Gießen und Marburg, Klinik für Innere Medizin mit Schwerpunkt Pneumologie, Marburg
| | - A von Leupoldt
- University of Leuven, Health Psychology, Leuven, Belgien
| | - F Wantke
- Floridsdorfer Allergiezentrum, Wien, Österreich
| | - J Wildhaber
- HFR Freiburg, Kantonsspital, Klinik für Pädiatrie, Freiburg, Schweiz
| | - H Worth
- Facharztzentrum Fürth, Fürth
| | - A Zacharasiewicz
- Klinikum Ottakring, Wilhelminenspital, Lehrkrankenhaus der Medizinischen Universität Wien, Abteilung für Kinder- und Jugendheilkunde, Wien, Österreich
| | - M Lommatzsch
- Universitätsmedizin Rostock, Abteilung für Pneumologie, Rostock
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Rose MA, Barker M, Liese J, Adams O, Ankermann T, Baumann U, Brinkmann F, Bruns R, Dahlheim M, Ewig S, Forster J, Hofmann G, Kemen C, Lück C, Nadal D, Nüßlein T, Regamey N, Riedler J, Schmidt S, Schwerk N, Seidenberg J, Tenenbaum T, Trapp S, van der Linden M. [Guidelines for the Management of Community Acquired Pneumonia in Children and Adolescents (Pediatric Community Acquired Pneumonia, pCAP) - Issued under the Responsibility of the German Society for Pediatric Infectious Diseases (DGPI) and the German Society for Pediatric Pulmonology (GPP)]. Pneumologie 2020; 74:515-544. [PMID: 32823360 DOI: 10.1055/a-1139-5132] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The present guideline aims to improve the evidence-based management of children and adolescents with pediatric community-acquired pneumonia (pCAP). Despite a prevalence of approx. 300 cases per 100 000 children per year in Central Europe, mortality is very low. Prevention includes infection control measures and comprehensive immunization. The diagnosis can and should be established clinically by history, physical examination and pulse oximetry, with fever and tachypnea as cardinal features. Additional signs or symptoms such as severely compromised general condition, poor feeding, dehydration, altered consciousness or seizures discriminate subjects with severe pCAP from those with non-severe pCAP. Within an age-dependent spectrum of infectious agents, bacterial etiology cannot be reliably differentiated from viral or mixed infections by currently available biomarkers. Most children and adolescents with non-severe pCAP and oxygen saturation > 92 % can be managed as outpatients without laboratory/microbiology workup or imaging. Anti-infective agents are not generally indicated and can be safely withheld especially in children of young age, with wheeze or other indices suggesting a viral origin. For calculated antibiotic therapy, aminopenicillins are the preferred drug class with comparable efficacy of oral (amoxicillin) and intravenous administration (ampicillin). Follow-up evaluation after 48 - 72 hours is mandatory for the assessment of clinical course, treatment success and potential complications such as parapneumonic pleural effusion or empyema, which may necessitate alternative or add-on therapy.
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Affiliation(s)
- M A Rose
- Fachbereich Medizin, Johann-Wolfgang-Goethe-Universität Frankfurt/Main und Zentrum für Kinder- und Jugendmedizin, Klinikum St. Georg Leipzig
| | - M Barker
- Klinik für Kinder- und Jugendmedizin, Helios Klinikum Emil von Behring, Berlin
| | - J Liese
- Kinderklinik und Poliklinik, Universitätsklinikum an der Julius-Maximilians-Universität Würzburg, Würzburg
| | - O Adams
- Institut für Virologie, Universitätsklinikum Düsseldorf
| | - T Ankermann
- Klinik für Kinder- und Jugendmedizin 1, Universitätsklinikum Schleswig-Holstein, Campus Kiel
| | - U Baumann
- Pädiatrische Pneumologie, Allergologie und Neonatologie, Medizinische Hochschule Hannover
| | - F Brinkmann
- Klinik für Kinder- und Jugendmedizin, Universitätsklinikum Ruhr-Universität Bochum
| | - R Bruns
- Zentrum für Kinder- und Jugendmedizin, Ernst-Moritz-Arndt-Universität Greifswald
| | - M Dahlheim
- Praxis für Kinderpneumologie und Allergologie, Mannheim
| | - S Ewig
- Kliniken für Pneumologie und Infektiologie, Thoraxzentrum Ruhrgebiet, Bochum/Herne
| | - J Forster
- Kinderabteilung St. Hedwig, St. Josefskrankenhaus , Freiburg und Merzhausen
| | | | - C Kemen
- Katholisches Kinderkrankenhaus Wilhelmstift, Hamburg
| | - C Lück
- Institut für Medizinische Mikrobiologie und Hygiene, Technische Universität Dresden
| | - D Nadal
- Kinderspital Zürich, Schweiz
| | - T Nüßlein
- Klinik für Kinder- und Jugendmedizin, Gemeinschaftsklinikum Mittelrhein, Koblenz
| | - N Regamey
- Pädiatrische Pneumologie, Kinderspital Luzern, Schweiz
| | - J Riedler
- Kinder- und Jugendmedizin, Kardinal Schwarzenberg'sches Krankenhaus, Schwarzach, Österreich
| | - S Schmidt
- Zentrum für Kinder- und Jugendmedizin, Ernst-Moritz-Arndt-Universität Greifswald
| | - N Schwerk
- Pädiatrische Pneumologie, Allergologie und Neonatologie, Medizinische Hochschule Hannover
| | - J Seidenberg
- Klinik für pädiatrische Pneumologie und Allergologie, Neonatologie, Intensivmedizin und Kinderkardiologie, Klinikum Oldenburg
| | - T Tenenbaum
- Klinik für Kinder- und Jugendmedizin, Universitätsklinikum Mannheim
| | | | - M van der Linden
- Institut für Medizinische Mikrobiologie, Universitätsklinikum Aachen
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3
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Gorlanova O, Illi S, Toncheva AA, Usemann J, Latzin P, Kabesch M, Dalphin JC, Lauener R, Pekkanen JR, Von Mutius E, Riedler J, Kuehni CE, Röösli M, Frey U. Protective effects of breastfeeding on respiratory symptoms in infants with 17q21 asthma risk variants. Allergy 2018; 73:2388-2392. [PMID: 30030842 DOI: 10.1111/all.13568] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- O. Gorlanova
- University Children's Hospital (UKBB); University of Basel; Basel Switzerland
| | - S. Illi
- Dr von Hauner Children's Hospital; Ludwig Maximilian University; Munich Germany
- Comprehensive Pneumology Center Munich (CPC-M); Munich Germany
- Member of the German Center for Lung Research; Munich Germany
| | - A. A. Toncheva
- Department of Pediatric Pneumology and Allergy; University Children's Hospital Regensburg (KUNO); Regensburg Germany
| | - J. Usemann
- University Children's Hospital (UKBB); University of Basel; Basel Switzerland
- Division of Respiratory Medicine; Department of Paediatrics, Inselspital; Bern University Hospital; University of Bern; Bern Switzerland
| | - P. Latzin
- Division of Respiratory Medicine; Department of Paediatrics, Inselspital; Bern University Hospital; University of Bern; Bern Switzerland
| | - M. Kabesch
- Department of Pediatric Pneumology and Allergy; University Children's Hospital Regensburg (KUNO); Regensburg Germany
| | - J.-C. Dalphin
- Department of Respiratory Disease; UMR/CNRS 6249 Chrono-environment; University Hospital; University of Besançon; Besançon France
| | - R. Lauener
- Children's Hospital of Eastern Switzerland; St. Gallen Switzerland
- Christine Kühne Center for Allergy Research and Education (CK-CARE); Davos Switzerland
| | - J. R. Pekkanen
- National Institute for Health and Welfare; Kuopio Finland
- Department of Public Health; University of Helsinki; Helsinki Finland
| | - E. Von Mutius
- Dr von Hauner Children's Hospital; Ludwig Maximilian University; Munich Germany
- Comprehensive Pneumology Center Munich (CPC-M); Munich Germany
- Member of the German Center for Lung Research; Munich Germany
| | - J. Riedler
- Children's Hospital Schwarzach; Teaching Hospital Paracelsus Private Medical University Salzburg; Salzburg Austria
| | - C. E. Kuehni
- Institute for Social and Preventive Medicine; University of Bern; Bern Switzerland
| | - M. Röösli
- Swiss Tropical and Public Health Institute Basel; Basel Switzerland
| | - U. Frey
- University Children's Hospital (UKBB); University of Basel; Basel Switzerland
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4
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Buhl R, Bals R, Baur X, Berdel D, Criée CP, Gappa M, Gillissen A, Greulich T, Haidl P, Hamelmann E, Kardos P, Kenn K, Klimek L, Korn S, Lommatzsch M, Magnussen H, Nicolai T, Nowak D, Pfaar O, Rabe KF, Riedler J, Ritz T, Schultz K, Schuster A, Spindler T, Taube C, Taube K, Vogelmeier C, von Leupoldt A, Wantke F, Weise S, Wildhaber J, Worth H, Zacharasiewicz A. [Guideline for the Diagnosis and Treatment of Asthma - Guideline of the German Respiratory Society and the German Atemwegsliga in Cooperation with the Paediatric Respiratory Society and the Austrian Society of Pneumology]. Pneumologie 2018; 71:e3. [PMID: 30406626 DOI: 10.1055/a-0790-0021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- R Buhl
- Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Schwerpunkt Pneumologie, III. Medizinische Klinik, Mainz
| | - R Bals
- Universitätsklinikum des Saarlandes, Klinik für Innere Medizin V, Homburg/Saar
| | - X Baur
- European Society for Environmental and Occupational Medicine, EOM, Berlin
| | | | - C-P Criée
- Evangelisches Krankenhaus Göttingen Weende, Abteilung für Pneumologie, Bovenden-Lenglern
| | - M Gappa
- Marien-Hospital gGmbH, Klinik für Kinder- und Jugendmedizin, Wesel
| | - A Gillissen
- Klinikum Am Steinenberg, Ermstalklinik, Medizinische Klinik III/Innere Medizin und Pneumologie, Reutlingen-Bad Urach
| | - T Greulich
- Universitätsklinikum Gießen und Marburg, Klinik für Innere Medizin mit Schwerpunkt Pneumologie, Marburg
| | - P Haidl
- Fachkrankenhaus Kloster Grafschaft GmbH, Abteilung Pneumologie II, Schmallenberg
| | - E Hamelmann
- Evangelisches Klinikum Bethel, Klinik für Kinder- und Jugendmedizin, Bielefeld
| | - P Kardos
- Lungenpraxis an der Klinik Maingau vom Roten Kreuz, Frankfurt am Main
| | - K Kenn
- Schön Klinik Berchtesgadener Land, Fachzentrum für Pneumologie, Schönau am Königssee, Philipps Universität Marburg, Standort Schönau
| | - L Klimek
- Zentrum für Rhinologie und Allergologie, Wiesbaden
| | - S Korn
- Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Schwerpunkt Pneumologie, III. Medizinische Klinik, Mainz
| | - M Lommatzsch
- Universitätsmedizin Rostock, Abteilung Pneumologie, Rostock
| | - H Magnussen
- Pneumologisches Forschungsinstitut an der LungenClinic Grosshansdorf GmbH, Großhansdorf
| | - T Nicolai
- Klinikum der Universität München, Kinderklinik und Kinderpoliklinik, LMU München
| | - D Nowak
- Klinikum der Universität München, Institut und Poliklinik für Arbeits-, Sozial- und Umweltmedizin, LMU München
| | - O Pfaar
- Zentrum für Rhinologie und Allergologie, Wiesbaden.,HNO-Universitätsklinik Mannheim, Medizinische Fakultät Mannheim, Universität Heidelberg, Mannheim
| | - K F Rabe
- LungenClinic Grosshansdorf GmbH, Abteilung für Pneumologie, Großhansdorf
| | - J Riedler
- Kardinal Schwarzenberg Klinikum, Kinder- und Jugendmedizin, Schwarzach im Pongau, Österreich
| | - T Ritz
- Southern Methodist University, Department of Psychology, Dallas, USA
| | - K Schultz
- Klinik Bad Reichenhall, Fachbereich Pneumologie, Bad Reichenhall
| | - A Schuster
- Universitätsklinikum Düsseldorf, Zentrum für Kinder- und Jugendmedizin, Düsseldorf
| | - T Spindler
- Waldburg-Zeil Kliniken, Fachkliniken Wangen, Klinik für Pädiatrische Pneumologie und Allergologie, Rehabilitationsklinik für Kinder und Jugendliche, Wangen
| | - C Taube
- Universitätsmedizin Essen, Ruhrlandklinik, Klinik für Pneumologie, Essen
| | | | - C Vogelmeier
- Universitätsklinikum Gießen und Marburg, Klinik für Innere Medizin mit Schwerpunkt Pneumologie, Marburg
| | - A von Leupoldt
- University of Leuven, Health Psychology, Leuven, Belgien
| | - F Wantke
- Floridsdorfer Allergiezentrum, Wien, Österreich
| | - S Weise
- Atem- und Physiotherapie Solln, München
| | - J Wildhaber
- HFR Freiburg, Kantonsspital, Klinik für Pädiatrie, Freiburg, Schweiz
| | - H Worth
- Facharztzentrum Fürth, Fürth
| | - A Zacharasiewicz
- Wilhelminenspital, Lehrkrankenhaus der Medizinischen Universität Wien, Abteilung für Kinder- und Jugendheilkunde, Wien, Österreich
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5
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Buhl R, Bals R, Baur X, Berdel D, Criée CP, Gappa M, Gillissen A, Greulich T, Haidl P, Hamelmann E, Kardos P, Kenn K, Klimek L, Korn S, Lommatzsch M, Magnussen H, Nicolai T, Nowak D, Pfaar O, Rabe KF, Riedler J, Ritz T, Schultz K, Schuster A, Spindler T, Taube C, Taube K, Vogelmeier C, von Leupold A, Wantke F, Weise S, Wildhaber J, Worth H, Zacharasiewicz A. [Guideline for the Diagnosis and Treatment of Asthma - Guideline of the German Respiratory Society and the German Atemwegsliga in Cooperation with the Paediatric Respiratory Society and the Austrian Society of Pneumology]. Pneumologie 2018; 71:e2. [PMID: 29334688 DOI: 10.1055/s-0044-100881] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- R Buhl
- Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Schwerpunkt Pneumologie, III. Medizinische Klinik, Mainz
| | - R Bals
- Universitätsklinikum des Saarlandes, Klinik für Innere Medizin V, Homburg/Saar
| | - X Baur
- European Society for Environmental and Occupational Medicine, EOM, Berlin
| | | | - C-P Criée
- Evangelisches Krankenhaus Göttingen Weende, Abteilung für Pneumologie, Bovenden-Lenglern
| | - M Gappa
- Marien-Hospital gGmbH, Klinik für Kinder- und Jugendmedizin, Wesel
| | - A Gillissen
- Klinikum Am Steinenberg, Ermstalklinik, Medizinische Klinik III/Innere Medizin und Pneumologie, Reutlingen-Bad Urach
| | - T Greulich
- Universitätsklinikum Gießen und Marburg, Klinik für Innere Medizin mit Schwerpunkt Pneumologie, Marburg
| | - P Haidl
- Fachkrankenhaus Kloster Grafschaft GmbH, Abteilung Pneumologie II, Schmallenberg
| | - E Hamelmann
- Evangelisches Klinikum Bethel, Klinik für Kinder- und Jugendmedizin, Bielefeld
| | - P Kardos
- Lungenpraxis an der Klinik Maingau vom Roten Kreuz, Frankfurt am Main
| | - K Kenn
- Schön Klinik Berchtesgadener Land, Fachzentrum für Pneumologie, Schönau am Königssee, Philipps Universität Marburg, Standort Schönau
| | - L Klimek
- Zentrum für Rhinologie und Allergologie, Wiesbaden
| | - S Korn
- Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Schwerpunkt Pneumologie, III. Medizinische Klinik, Mainz
| | - M Lommatzsch
- Universitätsmedizin Rostock, Abteilung Pneumologie, Rostock
| | - H Magnussen
- Pneumologisches Forschungsinstitut an der LungenClinic Grosshansdorf GmbH, Großhansdorf
| | - T Nicolai
- Klinikum der Universität München, Kinderklinik und Kinderpoliklinik, LMU München
| | - D Nowak
- Klinikum der Universität München, Institut und Poliklinik für Arbeits-, Sozial- und Umweltmedizin, LMU München
| | - O Pfaar
- Zentrum für Rhinologie und Allergologie, Wiesbaden.,HNO-Universitätsklinik Mannheim, Medizinische Fakultät Mannheim, Universität Heidelberg, Mannheim
| | - K F Rabe
- LungenClinic Grosshansdorf GmbH, Abteilung für Pneumologie, Großhansdorf
| | - J Riedler
- Kardinal Schwarzenberg Klinikum, Kinder- und Jugendmedizin, Schwarzach im Pongau, Österreich
| | - T Ritz
- Southern Methodist University, Department of Psychology, Dallas, USA
| | - K Schultz
- Klinik Bad Reichenhall, Fachbereich Pneumologie, Bad Reichenhall
| | - A Schuster
- Universitätsklinikum Düsseldorf, Zentrum für Kinder- und Jugendmedizin, Düsseldorf
| | - T Spindler
- Waldburg-Zeil Kliniken, Fachkliniken Wangen, Klinik für Pädiatrische Pneumologie und Allergologie, Rehabilitationsklinik für Kinder und Jugendliche, Wangen
| | - C Taube
- Universitätsmedizin Essen, Ruhrlandklinik, Klinik für Pneumologie, Essen
| | | | - C Vogelmeier
- Universitätsklinikum Gießen und Marburg, Klinik für Innere Medizin mit Schwerpunkt Pneumologie, Marburg
| | - A von Leupold
- University of Leuven, Health Psychology, Leuven, Belgien
| | - F Wantke
- Floridsdorfer Allergiezentrum, Wien, Österreich
| | - S Weise
- Atem- und Physiotherapie Solln, München
| | - J Wildhaber
- HFR Freiburg, Kantonsspital, Klinik für Pädiatrie, Freiburg, Schweiz
| | - H Worth
- Facharztzentrum Fürth, Fürth
| | - A Zacharasiewicz
- Wilhelminenspital, Lehrkrankenhaus der Medizinischen Universität Wien, Abteilung für Kinder- und Jugendheilkunde, Wien, Österreich
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6
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Buhl R, Bals R, Baur X, Berdel D, Criée CP, Gappa M, Gillissen A, Greulich T, Haidl P, Hamelmann E, Kardos P, Kenn K, Klimek L, Korn S, Lommatzsch M, Magnussen H, Nicolai T, Nowak D, Pfaar O, Rabe KF, Riedler J, Ritz T, Schultz K, Schuster A, Spindler T, Taube C, Taube K, Vogelmeier C, von Leupoldt A, Wantke F, Weise S, Wildhaber J, Worth H, Zacharasiewicz A. [Guideline for the Diagnosis and Treatment of Asthma - Guideline of the German Respiratory Society and the German Atemwegsliga in Cooperation with the Paediatric Respiratory Society and the Austrian Society of Pneumology]. Pneumologie 2017; 71:849-919. [PMID: 29216678 DOI: 10.1055/s-0043-119504] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The present guideline is a new version and an update of the guideline for the diagnosis and treatment of asthma, which replaces the previous version for german speaking countries from the year 2006. The wealth of new data on the pathophysiology and the phenotypes of asthma, and the expanded spectrum of diagnostic and therapeutic options necessitated a new version and an update. This guideline presents the current, evidence-based recommendations for the diagnosis and treatment of asthma, for children and adolescents as well as for adults with asthma.
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Affiliation(s)
| | | | | | - R Buhl
- Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Schwerpunkt Pneumologie, III. Medizinische Klinik, Mainz
| | - R Bals
- Universitätsklinikum des Saarlandes, Klinik für Innere Medizin V, Homburg/Saar
| | - X Baur
- European Society for Environmental and Occupational Medicine, EOM, Berlin
| | | | - C-P Criée
- Evangelisches Krankenhaus Göttingen Weende, Abteilung für Pneumologie, Bovenden-Lenglern
| | - M Gappa
- Marien-Hospital gGmbH, Klinik für Kinder- und Jugendmedizin, Wesel
| | - A Gillissen
- Klinikum Am Steinenberg, Ermstalklinik, Medizinische Klinik III/Innere Medizin und Pneumologie, Reutlingen-Bad Urach
| | - T Greulich
- Universitätsklinikum Gießen und Marburg, Klinik für Innere Medizin mit Schwerpunkt Pneumologie, Marburg
| | - P Haidl
- Fachkrankenhaus Kloster Grafschaft GmbH, Abteilung Pneumologie II, Schmallenberg
| | - E Hamelmann
- Evangelisches Klinikum Bethel, Klinik für Kinder- und Jugendmedizin, Bielefeld
| | - P Kardos
- Lungenpraxis an der Klinik Maingau vom Roten Kreuz, Frankfurt am Main
| | - K Kenn
- Schön Klinik Berchtesgadener Land, Fachzentrum für Pneumologie, Schönau am Königssee, Philipps Universität Marburg, Standort Schönau
| | - L Klimek
- Zentrum für Rhinologie und Allergologie, Wiesbaden
| | - S Korn
- Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Schwerpunkt Pneumologie, III. Medizinische Klinik, Mainz
| | - M Lommatzsch
- Universitätsmedizin Rostock, Abteilung Pneumologie, Rostock
| | - H Magnussen
- Pneumologisches Forschungsinstitut an der LungenClinic Grosshansdorf GmbH, Großhansdorf
| | - T Nicolai
- Klinikum der Universität München, Kinderklinik und Kinderpoliklinik, LMU München
| | - D Nowak
- Klinikum der Universität München, Institut und Poliklinik für Arbeits-, Sozial- und Umweltmedizin, LMU München
| | - O Pfaar
- Zentrum für Rhinologie und Allergologie, Wiesbaden.,HNO-Universitätsklinik Mannheim, Medizinische Fakultät Mannheim, Universität Heidelberg, Mannheim
| | - K F Rabe
- LungenClinic Grosshansdorf GmbH, Abteilung für Pneumologie, Großhansdorf
| | - J Riedler
- Kardinal Schwarzenberg Klinikum, Kinder- und Jugendmedizin, Schwarzach im Pongau, Österreich
| | - T Ritz
- Southern Methodist University, Department of Psychology, Dallas, USA
| | - K Schultz
- Klinik Bad Reichenhall, Fachbereich Pneumologie, Bad Reichenhall
| | - A Schuster
- Universitätsklinikum Düsseldorf, Zentrum für Kinder- und Jugendmedizin, Düsseldorf
| | - T Spindler
- Waldburg-Zeil Kliniken, Fachkliniken Wangen, Klinik für Pädiatrische Pneumologie und Allergologie, Rehabilitationsklinik für Kinder und Jugendliche, Wangen
| | - C Taube
- Universitätsmedizin Essen, Ruhrlandklinik, Klinik für Pneumologie, Essen
| | | | - C Vogelmeier
- Universitätsklinikum Gießen und Marburg, Klinik für Innere Medizin mit Schwerpunkt Pneumologie, Marburg
| | - A von Leupoldt
- University of Leuven, Health Psychology, Leuven, Belgien
| | - F Wantke
- Floridsdorfer Allergiezentrum, Wien, Österreich
| | - S Weise
- Atem- und Physiotherapie Solln, München
| | - J Wildhaber
- HFR Freiburg, Kantonsspital, Klinik für Pädiatrie, Freiburg, Schweiz
| | - H Worth
- Facharztzentrum Fürth, Fürth
| | - A Zacharasiewicz
- Wilhelminenspital, Lehrkrankenhaus der Medizinischen Universität Wien, Abteilung für Kinder- und Jugendheilkunde, Wien, Österreich
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7
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Chauveau A, Dalphin ML, Mauny F, Kaulek V, Schmausser-Hechfellner E, Renz H, Riedler J, Pekkanen J, Karvonen AM, Lauener R, Roduit C, Vuitton DA, von Mutius E, Dalphin JC. Skin prick tests and specific IgE in 10-year-old children: Agreement and association with allergic diseases. Allergy 2017; 72:1365-1373. [PMID: 28235151 DOI: 10.1111/all.13148] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/20/2017] [Indexed: 01/01/2023]
Abstract
BACKGROUND Accurate assessment of atopic sensitization is pivotal to clinical practice and research. Skin prick test (SPT) and specific IgE (sIgE) are often used interchangeably. Some studies have suggested a disagreement between these two methods, and little is known about their association with allergic diseases. The aims of our study were to evaluate agreement between SPT and sIgE, and to compare their association with allergic diseases in 10-year-old children. METHODS Skin prick test, sIgE measurements, and assessment of allergic diseases were performed in children aged 10 years in the Protection against Allergy: STUdy in Rural Environments (PASTURE) cohort. The agreement between SPT and sIgE was assessed by Cohen's kappa coefficient with different cutoff values. RESULTS Skin prick tests and sIgE were performed in 529 children. The highest agreement (κ=.44) was found with a cutoff value of 3 and 5 mm for SPT, and 3.5 IU/mL for sIgE. The area under the curve (AUC) obtained with SPT was not significantly different from that obtained with sIgE. For asthma and hay fever, SPT (cutoff value at 3 mm) had a significantly higher specificity (P<.0001) than sIgE (cutoff value at 0.35 IU/mL) and the specificity was not different between both tests (P=.1088). CONCLUSION Skin prick test and sIgE display moderate agreement, but have a similar AUC for allergic diseases. At the cutoff value of 3 mm for SPT and 0.35 IU/mL for sIgE, SPT has a higher specificity for asthma and hay fever than sIgE without difference for sensitivity.
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Affiliation(s)
- A. Chauveau
- Pediatrics Department; University Hospital of Besançon; Besançon France
- Pediatric Allergy Department; University Hospital of Nancy; Nancy France
- UMR 6249 Chrono-Environment; CNRS and University of Franche-Comté; Besançon France
| | - M.-L. Dalphin
- Pediatrics Department; University Hospital of Besançon; Besançon France
| | - F. Mauny
- UMR 6249 Chrono-Environment; CNRS and University of Franche-Comté; Besançon France
- Clinical Methodology Center; University Hospital of Besançon; Besançon France
| | - V. Kaulek
- UMR 6249 Chrono-Environment; CNRS and University of Franche-Comté; Besançon France
- Respiratory Diseases Department; University Hospital of Besançon; Besançon France
| | | | - H. Renz
- Institute for Laboratory Medicine, Pathobiochemistry and Molecular Diagnostics; Philipps University of Marburg; Marburg Germany
| | - J. Riedler
- Children's Hospital Schwarzach; Salzburg Austria
| | - J. Pekkanen
- Department of Health Protection; National Institute for Health and Welfare; Kuopio Finland
- Department of Public Health; University of Helsinki; Helsinki Finland
| | - A. M. Karvonen
- Department of Health Protection; National Institute for Health and Welfare; Kuopio Finland
| | - R. Lauener
- Christine Kühne Center for Allergy Research and Education (CK-CARE); Davos Switzerland
- Children's Hospital of Eastern Switzerland; St. Gallen Switzerland
| | - C. Roduit
- Christine Kühne Center for Allergy Research and Education (CK-CARE); Davos Switzerland
- University Children's Hospital Zurich; Zurich Switzerland
| | - D. A. Vuitton
- EA 3181; University of Franche-Comté; Besançon France
| | - E. von Mutius
- Dr. von Hauner Children's Hospital; Ludwig Maximilians University Munich; Munich Germany
- CPC-M; Member of the German Center for Lung Research; Giessen Germany
| | - J.-C. Dalphin
- UMR 6249 Chrono-Environment; CNRS and University of Franche-Comté; Besançon France
- Respiratory Diseases Department; University Hospital of Besançon; Besançon France
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8
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Schröder PC, Illi S, Casaca VI, Lluis A, Böck A, Roduit C, Depner M, Frei R, Genuneit J, Pfefferle PI, Roponen M, Weber J, Braun-Fahrländer C, Riedler J, Dalphin J, Pekkanen J, Lauener R, von Mutius E, Schaub B. A switch in regulatory T cells through farm exposure during immune maturation in childhood. Allergy 2017; 72:604-615. [PMID: 27732759 DOI: 10.1111/all.13069] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/08/2016] [Indexed: 11/30/2022]
Abstract
BACKGROUND Farm exposure protects against development of allergies early in life. At 4.5 years, protection against asthma by farm-milk exposure was partially mediated by regulatory T cells (Tregs). The aim of this study was to investigate the critical time window of the 'asthma-protective' farm effect via Tregs during childhood immune maturation. METHODS Tregs were assessed longitudinally at 4.5 and 6 years in 111 children (56 farm and 55 reference children) from the PASTURE/EFRAIM birth cohort (flow cytometry). Peripheral blood mononuclear cells were cultured unstimulated (U), with phorbol 12-myristate 13-acetate/ionomycin (PI) or lipopolysaccharide (LPS), and stained for Tregs (CD4+ CD25high FOXP3upper20% ). mRNA expression of Treg/Th1/Th2/Th17-associated cell markers was measured ex vivo. Suppressive capacity of Tregs on effector cells and cytokines was assessed. Detailed questionnaires assessing farm exposures and clinical phenotypes from birth until age 6 years were answered by the parents. RESULTS Treg percentage before and after stimulation and FOXP3mRNA expression ex vivo decreased from age 4.5 to 6 years (P(U,LPS) < 0.001; P(PI) = 0.051; P(FOXP3) < 0.001). High vs low farm-milk and animal-stable exposure was associated with decreased LPS-stimulated Treg percentage at age 6 years (P(LPS) = 0.045). Elevated LPS-stimulated-Treg percentage at age 6 was associated with increased risk of asthma (aOR = 11.29, CI: 0.96-132.28, P = 0.053). Tregs from asthmatics vs nonasthmatics suppressed IFN-γ (P = 0.015) and IL-9 (P = 0.023) less efficiently. mRNA expression of Th1/Th2/Th17-associated cell markers decreased between 4.5 and 6 years (P < 0.001). CONCLUSIONS Tregs at the age of 6 years were decreased with farm exposure and increased within asthmatics, opposite to age 4.5 years. This immunological switch defines a critical 'time window' for Treg-mediated asthma protection via environmental exposure before age 6 years.
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Affiliation(s)
- P. C. Schröder
- LMU Munich; University Children's Hospital; Munich Germany
| | - S. Illi
- LMU Munich; University Children's Hospital; Munich Germany
| | - V. I. Casaca
- LMU Munich; University Children's Hospital; Munich Germany
| | - A. Lluis
- National Jewish Health; Denver CO USA
| | - A. Böck
- LMU Munich; University Children's Hospital; Munich Germany
| | - C. Roduit
- Children's Hospital; University of Zürich; Zürich Switzerland
- Christine Kühne - Center for Allergy Research and Education (CK-CARE); Davos Switzerland
| | - M. Depner
- LMU Munich; University Children's Hospital; Munich Germany
| | - R. Frei
- Christine Kühne - Center for Allergy Research and Education (CK-CARE); Davos Switzerland
- Swiss Institute of Allergy and Asthma Research (SIAF); University of Zurich; Davos Switzerland
| | - J. Genuneit
- Institute of Epidemiology and Medical Biometry; Ulm University; Ulm Germany
| | - P. I. Pfefferle
- Comprehensive Biomaterial Bank Marburg CBBM; Fachbereich Medizin der Philipps Universität Marburg; Zentrum für Tumor und Immunbiologie ZTI; Marburg Germany
- Member of the German Centre for Lung Research (DZL); Munich Germany
| | - M. Roponen
- Department of Environmental Science; Inhalation Toxicology Laboratory; University of Eastern Finland; Kuopio Finland
| | - J. Weber
- LMU Munich; University Children's Hospital; Munich Germany
| | - C. Braun-Fahrländer
- Swiss Tropical and Public Health Institute; Basel Switzerland
- University of Basel; Basel Switzerland
| | - J. Riedler
- Children's Hospital Schwarzach; Schwarzach Austria
- Teaching Hospital of Paracelsus Medical Private University Salzburg; Salzburg Austria
| | - J.C. Dalphin
- Department of Respiratory Disease; University Hospital; University of Besançon; Besançon France
| | - J. Pekkanen
- Department of Health Protection; National Institute for Health and Welfare; Kuopio Finland
- Department of Public Health; University of Helsinki; Helsinki Finland
| | - R. Lauener
- Christine Kühne - Center for Allergy Research and Education (CK-CARE); Davos Switzerland
- Children's Hospital of Eastern Switzerland; St. Gallen Switzerland
| | - E. von Mutius
- LMU Munich; University Children's Hospital; Munich Germany
- Comprehensive Pneumology Centre Munich (CPC-M); German Centre for Lung Research (DZL); Munich Germany
| | - B. Schaub
- LMU Munich; University Children's Hospital; Munich Germany
- Comprehensive Pneumology Centre Munich (CPC-M); German Centre for Lung Research (DZL); Munich Germany
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9
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Orivuori L, Mustonen K, de Goffau MC, Hakala S, Paasela M, Roduit C, Dalphin JC, Genuneit J, Lauener R, Riedler J, Weber J, von Mutius E, Pekkanen J, Harmsen HJM, Vaarala O. High level of fecal calprotectin at age 2 months as a marker of intestinal inflammation predicts atopic dermatitis and asthma by age 6. Clin Exp Allergy 2016; 45:928-939. [PMID: 25758537 DOI: 10.1111/cea.12522] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2014] [Revised: 01/05/2015] [Accepted: 01/16/2015] [Indexed: 01/27/2023]
Abstract
BACKGROUND Gut microbiota and intestinal inflammation regulate the development of immune-mediated diseases, such as allergies. Fecal calprotectin is a biomarker of intestinal inflammation. OBJECTIVE We evaluated the association of early-age fecal calprotectin levels to the later development of allergic diseases in children from farming and non-farming environments and further studied the effect of gut microbiota on the fecal calprotectin levels. METHODS Fecal calprotectin was measured from 758 infants participating in the PASTURE study at the age of 2 months using the ELISA method. Serum-specific IgE levels were measured at 6 years of age. Data of environmental factors, doctor-diagnosed atopic dermatitis (AD) and asthma were collected by questionnaire. Multivariate logistic regression models were used for analysis. The composition of fecal microbiota was analysed in a subgroup of 120 infants with 16S rRNA pyrosequencing. The effect of Escherichia coli lipopolysaccharide (LPS) on in vitro monocyte IL-10 secretion was studied by flow cytometry. RESULTS The infants with high fecal calprotectin levels at 2 months, that is above the 90th percentile, had an increased risk of developing AD and asthma/asthmatic bronchitis by the age of 6 years (aOR 2.02 (1.06-3.85) and 2.41 (1.25-4.64), respectively). High fecal calprotectin levels correlated negatively with fecal Escherichia. LPS from E. coli stimulated production of IL-10 in monocytes. CONCLUSION AND CLINICAL RELEVANCE High degree intestinal inflammation at 2 months of age, detected as high fecal calprotectin, predicted asthma and AD by the age of 6 years and was linked to low abundance of fecal Escherichia. Impaired IL-10 activation due to the lack of colonization with E. coli could explain the intestinal inflammation associated high fecal calprotectin and later risk of asthma and AD. Our results have implications for the design of probiotic treatments and suggest that early intestinal colonization has long-term health effects.
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Affiliation(s)
- L Orivuori
- Institute of Clinical Medicine, University of Helsinki, Helsinki, Finland.,Department of Vaccination and Immune Protection, National Institute for Health and Welfare, Helsinki, Finland
| | - K Mustonen
- Environmental Health Department, National Institute for Health and Welfare, Kuopio, Finland
| | - M C de Goffau
- Department of Medical Microbiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - S Hakala
- Department of Vaccination and Immune Protection, National Institute for Health and Welfare, Helsinki, Finland
| | - M Paasela
- Department of Vaccination and Immune Protection, National Institute for Health and Welfare, Helsinki, Finland
| | - C Roduit
- Christine Kühne - Center for Allergy Research and Education (CK-CARE), Davos, Switzerland.,Children's Hospital, University of Zurich, Zurich, Switzerland
| | - J-C Dalphin
- The Department of Respiratory Disease, Université de Franche-Comté, UMR-CNRS Chrono-Environnement, University Hospital, Besançon, France
| | - J Genuneit
- Institute of Epidemiology and Medical Biometry, Ulm University, Ulm, Germany
| | - R Lauener
- Christine Kühne - Center for Allergy Research and Education (CK-CARE), Davos, Switzerland.,Children's Hospital of Eastern Switzerland, St. Gallen, Switzerland
| | - J Riedler
- Children and Young Adults' Medicine, Children's Hospital, Schwarzach, Austria
| | - J Weber
- Dr. von Hauner Children's Hospital of the Ludwig Maximilian University Munich, Munich, Germany
| | - E von Mutius
- Dr. von Hauner Children's Hospital of the Ludwig Maximilian University Munich, Munich, Germany.,Comprehensive Pneumology Center Munich (CPC-M), Member of the German Center for Lung Research, Mölndal, Sweden
| | - J Pekkanen
- Environmental Health Department, National Institute for Health and Welfare, Kuopio, Finland
| | - H J M Harmsen
- Department of Medical Microbiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - O Vaarala
- Institute of Clinical Medicine, University of Helsinki, Helsinki, Finland.,Respiratory, Inflammation and Autoimmunity, Innovative Medicine, AstraZeneca R & D, Mölndal, Sweden
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10
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11
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Zacharasiewicz A, Eber E, Riedler J, Frischer T. Evaluation und Therapie des chronischen Hustens bei Kindern. Monatsschr Kinderheilkd 2015. [DOI: 10.1007/s00112-014-3305-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Nicklaus S, Chauveau A, Roduit C, Chardon ML, Kaulek V, Dalphin ML, Pekannen J, Braun-Fahrländer C, Riedler J, Vuitton D, Von Mutiu E, Dalphin JC. O58: La diversité de consommation de fromages dans la petite enfance : un facteur protecteur des maladies allergiques ? NUTR CLIN METAB 2014. [DOI: 10.1016/s0985-0562(14)70634-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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13
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Schieck M, Sharma V, Michel S, Toncheva AA, Worth L, Potaczek DP, Genuneit J, Kretschmer A, Depner M, Dalphin JC, Riedler J, Frei R, Pekkanen J, Tost J, Kabesch M. A polymorphism in the TH 2 locus control region is associated with changes in DNA methylation and gene expression. Allergy 2014; 69:1171-80. [PMID: 24866380 DOI: 10.1111/all.12450] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/23/2014] [Indexed: 02/01/2023]
Abstract
BACKGROUND Genomewide association and epigenetic studies found a region within the RAD50 gene on chromosome 5q31 to be associated with total serum IgE levels and asthma. In mice, this region harbors a locus control region for nearby TH 2 cytokines, which is characterized by four Rad50 DNase I hypersensitive sites (RHS4-7). Among these, RHS7 seems to have the strongest impact on TH 2 differentiation. We investigated whether within the human homolog of RHS7, functional polymorphisms exist, which could affect DNA methylation or gene expression in the 5q31 locus and might have an influence on asthma status or IgE regulation. METHODS The human RHS7 region was fine mapped using 1000 genomes database information. In silico analysis and electrophoretic mobility shift assays were used to assess SNP function. Allele-specific effects on DNA methylation were evaluated in cord blood (n = 73) and at age of 4.5 years (n = 61) by pyrosequencing. Allele-specific effects on RAD50, IL4, and IL13 expression were analyzed in 100 subjects. Associations with asthma and IgE levels were investigated in the MAGICS/ISAAC II population (n = 1145). RESULTS Polymorphism rs2240032 in the RHS7 region is suggestive of allele-specific transcription factor binding, affects methylation of the IL13 promoter region and influences RAD50 and IL4 expression (lowest P = 0.0027). It is also associated with total serum IgE levels (P = 0.0227). CONCLUSION A functional relevant polymorphism in the TH 2 locus control region, equivalent to RHS7 in mice, affects DNA methylation and gene expression within 5q31 and influences total serum IgE on the population level.
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Affiliation(s)
- M Schieck
- Department of Pediatric Pneumology and Allergy, University Children`s Hospital Regensburg (KUNO), Regensburg, Germany; Department of Pediatric Pneumology, Allergy and Neonatology, Hannover Medical School, Hannover, Germany
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14
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Orivuori L, Loss G, Roduit C, Dalphin JC, Depner M, Genuneit J, Lauener R, Pekkanen J, Pfefferle P, Riedler J, Roponen M, Weber J, von Mutius E, Braun-Fahrländer C, Vaarala O. Soluble immunoglobulin A in breast milk is inversely associated with atopic dermatitis at early age: the PASTURE cohort study. Clin Exp Allergy 2014; 44:102-12. [PMID: 24102779 DOI: 10.1111/cea.12199] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Revised: 09/05/2013] [Accepted: 09/15/2013] [Indexed: 01/24/2023]
Abstract
BACKGROUND The role of breastfeeding for the development of atopic diseases in childhood is contradictory. This might be due to differences in the composition of breast milk and levels of antimicrobial and anti-inflammatory components. OBJECTIVE The objective of this study was to examine whether levels of total immunoglobulin A (IgA) or transforming growth factor-β1 (TGF-β1) in breast milk were associated with the risk of developing atopic dermatitis (AD), atopic sensitization or asthma at early age taking breastfeeding duration into account. METHODS The birth cohort study PASTURE conducted in Finland, France, Germany and Switzerland provided 610 breast milk samples collected 2 months after delivery in which soluble IgA (sIgA) and TGF-β1 levels were measured by ELISA. Duration of breastfeeding was assessed using weekly food frequency diaries from month 3 to month 12. Data on environmental factors, AD and asthma were collected by questionnaires from pregnancy up to age 6. Atopic status was defined by specific IgE levels in blood collected at the ages of 4 and 6 years. Multivariate logistic regression models were used for statistical analysis. RESULTS Soluble IgA and TGF-β1 levels in breast milk differed between countries, and sIgA levels were associated with environmental factors related to microbial load, for example, contact to farm animals or cats during pregnancy, but not with raw milk consumption. sIgA levels were inversely associated with AD up to the of age 2 years (P-value for adjusted linear trend: 0.005), independent of breastfeeding duration. The dose of sIgA ingested in the first year of life was associated with reduced risk of AD up to the age of 2 (aOR, 95% CI: 0.74; 0.55-0.99) and 4 years (0.73; 0.55-0.96). No clear associations between sIgA and atopy or asthma up to age 6 were observed. TGF-β1 showed no consistent association with any investigated health outcome. CONCLUSION AND CLINICAL RELEVANCE IgA in breast milk might protect against the development of AD.
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Affiliation(s)
- L Orivuori
- Department of Vaccination and Immune Protection, National Institute for Health and Welfare, Helsinki, Finland
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15
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Nwaru BI, Virtanen SM, Alfthan G, Karvonen AM, Genuneit J, Lauener RP, Dalphin JC, Hyvärinen A, Pfefferle P, Riedler J, Weber J, Roduit C, Kaulek V, Braun-Fahrländer C, von Mutius E, Pekkanen J. Serum vitamin E concentrations at 1 year and risk of atopy, atopic dermatitis, wheezing, and asthma in childhood: the PASTURE study. Allergy 2014; 69:87-94. [PMID: 24205866 DOI: 10.1111/all.12307] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/28/2013] [Indexed: 11/29/2022]
Abstract
BACKGROUND Prospective studies investigating the role of serum vitamin E concentrations during early life in the development of childhood allergies and asthma are limited. OBJECTIVE To study the associations between serum vitamin E concentrations at first year of life and longitudinal development of atopy, atopic dermatitis, wheeze, and asthma up to 6 years of age. METHODS The setting was the PASTURE study, a multicenter prospective birth cohort study in five European rural settings. Children of 1133 mothers recruited during pregnancy were followed from birth with measurement of serum vitamin E levels at year 1 and repeated assessments of serum immunoglobulin E antibodies (year 1, 4.5, 6), atopic dermatitis, wheezing symptoms, and asthma (year 1, 1.5, 2, 3, 4, 5, 6). RESULTS At 6 years of age, 66% and 82% of the original 1133 subjects underwent blood test for IgE and answered the questionnaire, respectively. We did not observe any statistically significant associations between serum vitamin E concentrations at year 1 and the endpoints, but borderline inverse associations between alpha tocopherol and wheezing without cold (OR 0.45, 95% CI 0.19-1.09) and any wheezing symptom (OR 0.52, 95% CI 0.27-1.02). CONCLUSIONS Serum vitamin E concentrations at year 1 were not associated with allergies or asthma by 6 years of age. While further prospective studies with repeated assessments of vitamin E during early life may clarify its putative role in the development of the diseases, it is also possible that the antioxidant hypothesis in the development of allergies and asthma does not hold.
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Affiliation(s)
- B. I. Nwaru
- School of Health Sciences; University of Tampere; Tampere Finland
| | - S. M. Virtanen
- School of Health Sciences; University of Tampere; Tampere Finland
- Nutrition Unit; Department of Lifestyle and Participation; National Institute for Health and Welfare; Helsinki Finland
- The Science Center of Pirkanmaa Hospital District; Tampere Finland
| | - G. Alfthan
- Disease Risk Unit; Department of Chronic Disease Prevention; National Institute for Health and Welfare; Helsinki Finland
| | - A. M. Karvonen
- Department of Environmental Health; National Institute for Health and Welfare; Kuopio Finland
| | - J. Genuneit
- Institute of Epidemiology and Medical Biometry; Ulm University; Ulm Germany
| | - R. P. Lauener
- Children's Hospital of Eastern Switzerland; St. Gallen, and Christine Kühne-Center for Allergy Research and Education; Davos Switzerland
| | - J.-C. Dalphin
- Department of Respiratory Disease; UMR/CNRS 6249 Chrono-environnement; University Hospital of Besançon; Besançon France
| | - A. Hyvärinen
- Department of Environmental Health; National Institute for Health and Welfare; Kuopio Finland
| | - P. Pfefferle
- Department of Clinical Chemistry and Molecular Diagnostics; Philipps University of Marburg; Marburg Germany
| | - J. Riedler
- Children's Hospital Schwarzach; Schwarzach Austria
| | - J. Weber
- University Children's Hospital Munich; Munich Germany
| | - C. Roduit
- Christine Kühne-Center for Allergy Research and Education; Zürich University Children's Hospital; Zurich Switzerland
| | - V. Kaulek
- Department of Respiratory Disease; UMR/CNRS 6249 Chrono-environnement; University Hospital of Besançon; Besançon France
| | - C. Braun-Fahrländer
- Swiss Tropical and Public Health Institute; Basel Switzerland
- University of Basel; Basel Switzerland
| | - E. von Mutius
- University Children's Hospital Munich; Munich Germany
| | - J. Pekkanen
- Department of Environmental Health; National Institute for Health and Welfare; Kuopio Finland
- Unit of Public Health and Clinical Nutrition; University of Eastern Finland; Kuopio Finland
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16
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Michel S, Busato F, Genuneit J, Pekkanen J, Dalphin JC, Riedler J, Mazaleyrat N, Weber J, Karvonen AM, Hirvonen MR, Braun-Fahrländer C, Lauener R, von Mutius E, Kabesch M, Tost J. Farm exposure and time trends in early childhood may influence DNA methylation in genes related to asthma and allergy. Allergy 2013; 68:355-64. [PMID: 23346934 DOI: 10.1111/all.12097] [Citation(s) in RCA: 130] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/23/2012] [Indexed: 01/17/2023]
Abstract
BACKGROUND Genetic susceptibility and environmental influences are important contributors to the development of asthma and atopic diseases. Epigenetic mechanisms may facilitate gene by environment interactions in these diseases. METHODS We studied the rural birth cohort PASTURE (Protection against allergy: study in rural environments) to investigate (a) whether epigenetic patterns in asthma candidate genes are influenced by farm exposure in general, (b) change over the first years of life, and (c) whether these changes may contribute to the development of asthma. DNA was extracted from cord blood and whole blood collected at the age of 4.5 years in 46 samples per time point. DNA methylation in 23 regions in ten candidate genes (ORMDL1, ORMDL2, ORMDL3, CHI3L1, RAD50, IL13, IL4, STAT6, FOXP3, and RUNX3) was assessed by pyrosequencing, and differences between strata were analyzed by nonparametric Wilcoxon-Mann-Whitney tests. RESULTS In cord blood, regions in ORMDL1 and STAT6 were hypomethylated in DNA from farmers' as compared to nonfarmers' children, while regions in RAD50 and IL13 were hypermethylated (lowest P-value (STAT6) = 0.001). Changes in methylation over time occurred in 15 gene regions (lowest P-value (IL13) = 1.57*10(-8)). Interestingly, these differences clustered in the genes highly associated with asthma (ORMDL family) and IgE regulation (RAD50, IL13, and IL4), but not in the T-regulatory genes (FOXP3, RUNX3). CONCLUSIONS In this first pilot study, DNA methylation patterns change significantly in early childhood in specific asthma- and allergy-related genes in peripheral blood cells, and early exposure to farm environment seems to influence methylation patterns in distinct genes.
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Affiliation(s)
| | - F. Busato
- Laboratory for Epigenetics; Centre National de Génotypage; CEA-Institut de Génomique; Evry; France
| | - J. Genuneit
- Ulm University; Institute of Epidemiology and Medical Biometry; Ulm; Germany
| | | | - J.-C. Dalphin
- Department of Respiratory Disease; Université de Franche-Comté; University Hospital; Besancon; France
| | - J. Riedler
- Children's Hospital Schwarzach; Schwarzach; Austria
| | - N. Mazaleyrat
- Laboratory for Epigenetics; Centre National de Génotypage; CEA-Institut de Génomique; Evry; France
| | - J. Weber
- LMU Munich; University Children's Hospital; Munich; Germany
| | - A. M. Karvonen
- Department of Environmental Health; National Institute for Health and Welfare; Kuopio; Finland
| | | | | | | | - E. von Mutius
- LMU Munich; University Children's Hospital; Munich; Germany
| | | | - J. Tost
- Laboratory for Epigenetics; Centre National de Génotypage; CEA-Institut de Génomique; Evry; France
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Karvonen AM, Hyvärinen A, Gehring U, Korppi M, Doekes G, Riedler J, Braun-Fahrländer C, Bitter S, Schmid S, Keski-Nisula L, Roponen M, Kaulek V, Dalphin JC, Pfefferle PI, Renz H, Büchele G, von Mutius E, Pekkanen J. Exposure to microbial agents in house dust and wheezing, atopic dermatitis and atopic sensitization in early childhood: a birth cohort study in rural areas. Clin Exp Allergy 2012; 42:1246-56. [PMID: 22805472 DOI: 10.1111/j.1365-2222.2012.04002.x] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
BACKGROUND Early-life exposure to environmental microbial agents may be associated with development of wheezing and allergic diseases. OBJECTIVE To assess the association of microbial exposure in rural homes with the risk of asthma, wheezing, atopic dermatitis and sensitization. METHODS Birth cohorts of rural children (n = 1133), half from farmer families, were followed up from birth to 2 years of age by questionnaires in five European centres. Endotoxin and extracellular polysaccharides (EPS) of Penicillium and Aspergillus spp. were determined from living room floor and mother's mattress dust samples collected at 2 months of age. Specific IgE against 19 allergens was measured at 1 year of age. Discrete-time hazard models, generalized estimations equations (GEE) and logistic regression were used for statistical analyses. RESULTS The incidence of asthma was inversely associated with the amount of dust (adjusted odds ratio (aOR) 0.73, 95% CI 0.58-0.93) and the loads (units/m(2)) of EPS (aOR 0.75, 95% CI 0.55-1.04) and endotoxin (aOR 0.79, 95% CI 0.60-1.05) in the mother's mattress. Similar associations were seen with wheezing and with living room floor dust. The microbial markers were highly correlated and their effects could not be clearly separated. The inverse associations were seen especially among non-farmers. The risk of sensitization to inhalant allergens increased with increasing endotoxin exposure from mattress dust. No associations were observed with concentrations (units/g) or with atopic dermatitis. CONCLUSION AND CLINICAL RELEVANCE The amount and microbial content of house dust were inversely associated with asthma and wheezing, but due to high correlations between microbial agents and amount of dust, it was not possible to disentangle their individual effects. New ways to better measure and represent exposure to environmental microbes, including indexes of biodiversity, are needed especially among farmers.
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Affiliation(s)
- A M Karvonen
- Department of Environmental Health, National Institute for Health and Welfare, Kuopio, Finland.
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Zacharasiewicz A, Horak F, Fazekas T, Riedler J. Tabakrauchexposition von Kindern und Jugendlichen. Monatsschr Kinderheilkd 2012. [DOI: 10.1007/s00112-011-2572-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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19
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Büchele G, Genuneit J, Braun-Fahrländer C, Pekkanen J, Riedler J, Dalphin J, Renz H, Kabesch M, Lauener R, Doekes G, Mutius EV. Asthma and allergies in farming environments – The PASTURE/FORALLVENT/EFRAIM-Project. Gesundheitswesen 2010. [DOI: 10.1055/s-0030-1266705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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20
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Rochat MK, Ege MJ, Plabst D, Steinle J, Bitter S, Braun-Fahrländer C, Dalphin JC, Riedler J, Roponen M, Hirvonen MR, Büchele G, Renz H, Lauener R, Krauss-Etschmann S, von Mutius E. Maternal vitamin D intake during pregnancy increases gene expression of ILT3 and ILT4 in cord blood. Clin Exp Allergy 2009; 40:786-94. [PMID: 20030662 DOI: 10.1111/j.1365-2222.2009.03428.x] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Recent studies indicate that prenatal vitamin D intake may protect against the development of atopic diseases in young children. Vitamin D has been shown to induce tolerogenic antigen-presenting cells such as dendritic cells. Whether the allergy-protective potential of prenatal vitamin D is mediated through such mechanisms is, however, unknown. OBJECTIVE To evaluate the association between prenatal vitamin D supplementation and tolerogenic antigen-presenting cells in cord blood (CB) as determined by mRNA measurement of immunoglobulin-like transcripts (ILT)3 and ILT4. METHODS A prospective multi-centre birth cohort was established in rural areas of five European countries. Information on maternal exposures including vitamin D intake was collected by questionnaires during pregnancy. The gene expression of ILT3 and ILT4 was analysed by real-time PCR in the CB of 927 children. Maternal vitamin D supplementation was assessed in Finland and France (n=349). RESULTS Maternal vitamin D supplementation during pregnancy was associated with an increase in the gene expression of ILT3 (P=0.012) and ILT4 (P<0.001). This association remained significant for ILT4 (P=0.020) and showed a positive trend for the gene expression of ILT3 (P=0.059) after multivariate analysis controlling for various confounders. CONCLUSIONS Vitamin D supplementation during pregnancy may increase the mRNA levels of ILT3 and ILT4 in CB. This finding may point towards an early induction of tolerogenic immune responses by maternal vitamin D intake.
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Affiliation(s)
- M K Rochat
- Children's Hospital, University of Munich, Lindwurmstrasse 4, Munich, Germany.
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21
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Ege MJ, Herzum I, Büchele G, Krauss-Etschmann S, Lauener RP, Bitter S, Roponen M, Remes S, Vuitton DA, Riedler J, Brunekreef B, Dalphin JC, Braun-Fahrländer C, Pekkanen J, Renz H, von Mutius E. Specific IgE to allergens in cord blood is associated with maternal immunity to Toxoplasma gondii and rubella virus. Allergy 2008; 63:1505-11. [PMID: 18925886 DOI: 10.1111/j.1398-9995.2008.01793.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Various studies have found reduced prevalences of atopic sensitization and atopic diseases in children previously exposed to infections or living conditions with a high microbial burden, such as the farming environment. OBJECTIVE We sought to determine the relationships of cord blood immunoglobulin E (IgE) with maternal health conditions before and during pregnancy. METHODS Pregnant women living in rural areas in five European countries were recruited in the third trimester of pregnancy. Information on maternal health during pregnancy was collected from maternity records and by questionnaires (n = 497). Specific IgE for inhalant and food allergens was assessed in cord blood and peripheral blood samples of the mothers. RESULTS Inverse associations of cord blood IgE to seasonal allergens with positive maternal records for Toxoplasma gondii (adjusted odds ratio = 0.37 [0.17-0.81]) and rubella virus (adjusted odds ratio = 0.35 [0.13-0.96]) were found. The previously described effect of prenatal farm exposure on IgE to seasonal allergens was partly confounded by a positive maternal record for T. gondii. The number of maternal siblings, maternal contact to cats during pregnancy or during her first year of life, predicted a positive maternal record for T. gondii. CONCLUSIONS Maternal immunity to T. gondii and rubella may impact on atopic sensitization in the fetus. A positive T. gondii record explained the previously identified effect of prenatal farm exposure on IgE to seasonal allergens only to a minor extent.
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Affiliation(s)
- M J Ege
- University Children's Hospital, Munich, Germany
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22
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23
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Bruce S, Nyberg F, Melén E, James A, Pulkkinen V, Orsmark-Pietras C, Bergström A, Dahlén B, Wickman M, von Mutius E, Doekes G, Lauener R, Riedler J, Eder W, van Hage M, Pershagen G, Scheynius A, Kere J. The protective effect of farm animal exposure on childhood allergy is modified by NPSR1 polymorphisms. J Med Genet 2008; 46:159-67. [PMID: 18285428 DOI: 10.1136/jmg.2007.055137] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND Little is known about the asthma candidate gene neuropeptide S receptor 1 (NPSR1) in relation to environmental exposures, but recent evidences suggest its role as an effect modifier. OBJECTIVES To explore the interaction between NPSR1 polymorphisms and environmental exposures related to farming lifestyle and to study the in vitro effects of lipopolysaccharide (LPS) stimulation on NPSR1 expression levels. METHODS We studied 3113 children from PARSIFAL, a European cross-sectional study on environmental/lifestyle factors and childhood allergy, partly focused on children brought up on a farm. Information on exposures and outcomes was primarily obtained from parental questionnaires. Seven tagging polymorphisms were analysed in a conserved haplotype block of NPSR1. Multivariate logistic regression was used to evaluate a multiplicative model of interaction. NPSR1 protein and messenger RNA (mRNA) levels in monocytes were measured after LPS stimulation by fluorescence activated cell sorting (FACS) and quantitative real-time polymerase chain reaction (PCR). RESULTS A strong interaction was seen between current regular contact to farm animals and several NPSR1 polymorphisms, particularly rs323922 and rs324377 (p<0.005), with respect to allergic symptoms. Considering the timing of initiation of such current regular farm animal contact, significant interactions with these and two additional polymorphisms (SNP546333, rs740347) were revealed. In response to LPS, NPSR1-A protein levels in monocytes were upregulated (p = 0.002), as were NPSR1-A mRNA levels (p = 0.02). CONCLUSIONS The effect of farm animal contact on the development of allergic symptoms in children is modified by NPSR1 genetic background.
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Affiliation(s)
- S Bruce
- Department of Biosciences and Nutrition, Hälsovägen 7-9, 14157 Huddinge, Sweden.
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24
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Karadag B, Ege MJ, Scheynius A, Waser M, Schram-Bijkerk D, van Hage M, Pershagen G, Brunekreef B, Riedler J, Braun-Fahrländer C, von Mutius E. Environmental determinants of atopic eczema phenotypes in relation to asthma and atopic sensitization. Allergy 2007; 62:1387-93. [PMID: 17983373 DOI: 10.1111/j.1398-9995.2007.01505.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND There is still uncertainty about the determinants of atopic eczema (AE). To explain the heterogeneity of the disease, different phenotypes of AE have been suggested. METHODS The cross-sectional PARSIFAL study included 14 893 school-age children of farmers or children attending Steiner schools and their respective reference groups. A detailed questionnaire was completed, and house dust was collected for the measurement of endotoxin and glucans. Atopic sensitization was defined by allergen-specific IgE levels in the serum. RESULTS In multivariate analyses, helping with haying was the only variable related to a farming environment having a consistent inverse association with both current symptoms and a doctor's diagnosis of AE [aOR = 0.65 (95% CI: 0.46-0.93) and 0.73 (0.51-1.05)], respectively. Severe lower respiratory tract infections (LRTI) in the first 2 years of life and usage of antibiotics ever were found to be positively related only to asthma-associated AE, whereas the effect of LRTI on AE without asthma had an opposite effect. Levels of beta(1-->3)-glucans in mattress dust were inversely related to a doctor's diagnosis of asthma-associated AE [aOR = 0.75 (0.57-0.98)], and endotoxin levels to current symptoms of asthma-associated AE [aOR = 0.73 (0.57-0.94)]. CONCLUSIONS The analyses of the PARSIFAL study revealed two different phenotypes of AE, depending on the association with asthma and wheezing ever. With regard to the hygiene hypothesis, help with haying, exposure to beta(1-->3)-glucans and endotoxin were found to be inversely associated with the AE phenotype associated with asthma and wheezing.
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Affiliation(s)
- B Karadag
- University Children's Hospital Munich, Munich, Germany
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25
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Waser M, Michels KB, Bieli C, Flöistrup H, Pershagen G, von Mutius E, Ege M, Riedler J, Schram-Bijkerk D, Brunekreef B, van Hage M, Lauener R, Braun-Fahrländer C. Inverse association of farm milk consumption with asthma and allergy in rural and suburban populations across Europe. Clin Exp Allergy 2007; 37:661-70. [PMID: 17456213 DOI: 10.1111/j.1365-2222.2006.02640.x] [Citation(s) in RCA: 200] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Dietary interventions as a means for atopy prevention attract great interest. Some studies in rural environments claimed an inverse association between consumption of farm-produced dairy products and the prevalence of allergic diseases, but current evidence is controversial. OBJECTIVE To investigate whether consumption of farm-produced products is associated with a lower prevalence of asthma and allergy when compared with shop-purchased products. METHODS Cross sectional multi-centre study (PARSIFAL) including 14,893 children aged 5-13 years from five European countries (2823 from farm families and 4606 attending Steiner Schools as well as 5440 farm reference and 2024 Steiner reference children). A detailed questionnaire including a dietary component was completed and allergen-specific IgE was measured in serum. RESULTS Farm milk consumption ever in life showed a statistically significant inverse association with asthma: covariate adjusted odds ratio (aOR) 0.74 [95% confidence interval (CI) 0.61-0.88], rhinoconjunctivitis: aOR 0.56 (0.43-0.73) and sensitization to pollen and the food mix fx5 (cut-off level of >or=3.5 kU/L): aOR 0.67 (0.47-0.96) and aOR 0.42 (0.19-0.92), respectively, and sensitization to horse dander: aOR 0.50 (95% CI 0.28-0.87). The associations were observed in all four subpopulations and independent of farm-related co-exposures. Other farm-produced products were not independently related to any allergy-related health outcome. CONCLUSION Our results indicate that consumption of farm milk may offer protection against asthma and allergy. A deepened understanding of the relevant protective components of farm milk and a better insight into the biological mechanisms underlying this association are warranted as a basis for the development of a safe product for prevention.
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Affiliation(s)
- M Waser
- Institute of Social and Preventive Medicine, University of Basel, Switzerland.
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26
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Schram-Bijkerk D, Doekes G, Boeve M, Douwes J, Riedler J, Ublagger E, von Mutius E, Benz M, Pershagen G, Wickman M, Alfvén T, Braun-Fahrländer C, Waser M, Brunekreef B. Exposure to microbial components and allergens in population studies: a comparison of two house dust collection methods applied by participants and fieldworkers. Indoor Air 2006; 16:414-25. [PMID: 17100663 DOI: 10.1111/j.1600-0668.2006.00435.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Dust collection by study participants instead of fieldworkers would be a practical and cost-effective alternative in large-scale population studies estimating exposure to indoor allergens and microbial agents. We aimed to compare dust weights and biological agent levels in house dust samples taken by study participants with nylon socks, with those in samples taken by fieldworkers using the sampling nozzle of the Allergology Laboratory Copenhagen (ALK). In homes of 216 children, parents and fieldworkers collected house dust within the same year. Dust samples were analyzed for levels of allergens, endotoxin, (1-->3)-beta-D-glucans and fungal extracellular polysaccharides (EPS). Socks appeared to yield less dust from mattresses at relatively low dust amounts and more dust at high dust amounts than ALK samples. Correlations between the methods ranged from 0.47-0.64 for microbial agents and 0.64-0.87 for mite and pet allergens. Cat allergen levels were two-fold lower and endotoxin levels three-fold higher in socks than in ALK samples. Levels of allergens and microbial agents in sock samples taken by study participants are moderately to highly correlated to levels in ALK samples taken by fieldworkers. Absolute levels may differ, probably because of differences in the method rather than in the person who performed the sampling. Practical Implications Dust collection by participants is a reliable and practical option for allergen and microbial agent exposure assessment. Absolute levels of biological agents are not (always) comparable between studies using different dust collection methods, even when expressed per gram dust, because of potential differences in particle-size constitution of the collected dust.
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Affiliation(s)
- D Schram-Bijkerk
- Institute for Risk Assessment Sciences, University of Utrecht, Utrecht, The Netherlands
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27
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Jacobson M, Råsbäck T, Flöistrup H, Benz M, Braun-Fahrländer C, Riedler J, Schram-Bijkerk D, Fellström C. Survey on the occurrence of Brachyspira species and Lawsonia intracellularis in children living on pig farms. Epidemiol Infect 2006; 135:1043-5. [PMID: 17134531 PMCID: PMC2870646 DOI: 10.1017/s0950268806007606] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The occurrence of Brachyspira species and Lawsonia intracellularis was investigated by PCR analyses of faeces from 60 children living on European pig farms. In addition, 60 other children were included as controls. Two samples were positive for B. aalborgi but B. pilosicoli and L. intracellularis were not demonstrated.
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Affiliation(s)
- M Jacobson
- Department of Clinical Sciences, Faculty of Veterinary Medicine and Animal Science, Uppsala, Sweden.
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28
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Eder W, Klimecki W, Yu L, von Mutius E, Riedler J, Braun-Fahrländer C, Nowak D, Holst O, Martinez FD. Association between exposure to farming, allergies and genetic variation in CARD4/NOD1. Allergy 2006; 61:1117-24. [PMID: 16918516 DOI: 10.1111/j.1398-9995.2006.01128.x] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Caspase recruitment domain protein (CARD) 4 has been recently identified as an intracellular pattern recognition receptor that interacts with muropeptides found in common Gram-negative bacteria. We therefore aimed to explore whether the previously observed inverse association between exposure to microbial products and asthma and allergies in childhood is modified by genetic variation in CARD4. METHODS We genotyped 668 children [mean age 9.3 (SD 1.5) years] enrolled in the cross-sectional ALEX study for seven haplotype tagging single nucleotide polymorphisms in CARD4. We studied the association of asthma, hay fever and allergen-specific serum immunoglobulin E with exposure to a farming environment and with levels of endotoxin and muramic acid measured in house dust samples. We tested whether these associations differed between the genotypes of the polymorphisms under study. RESULTS A strong protective effect of a farming environment on allergies was only found in children homozygous for the T allele in CARD4/-21596, but not in children carrying the minor allele (C). Among the former, farmers' children had a significantly lower frequency of sensitization against pollen (5.8%), hay fever (1.7%) and atopic asthma symptoms (1.7%) compared with children not living on a farm (19.4%, 13.0% and 7.6%, P<0.01, <0.01 and <0.05, respectively). Conversely, no significant difference in prevalence of these phenotypes by farming status was found among children with a C allele in CARD4/-21596 (14.3%, 7.1% and 8.0%vs 16.5%, 9.0% and 5.7%, respectively). CONCLUSION Polymorphisms in CARD4 significantly modify the protective effect of exposure to a farming environment.
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Affiliation(s)
- W Eder
- Arizona Respiratory Center, University of Arizona, Tucson, AZ 85724, USA, and Dr von Hauner Children's Hospital, University of Munich, Germany
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29
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Karadag B, Ege M, Bradley JE, Braun-Fahrländer C, Riedler J, Nowak D, von Mutius E. The role of parasitic infections in atopic diseases in rural schoolchildren. Allergy 2006; 61:996-1001. [PMID: 16867054 DOI: 10.1111/j.1398-9995.2006.01107.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND There is increasing evidence that the farming environment has a protective effect as regards allergic diseases. Exposure to animal parasites, particularly helminth infections, is common in the farming environment. However, the role of helminths in this environment is not well determined to date. METHODS This analysis focuses on 613 children 6-13 years of age from rural areas of Austria, Germany and Switzerland, who took part in the Allergy and Endotoxin (ALEX) study. Allergic diseases and farming characteristics were assessed by a standardized questionnaire and as a crude measure of possible exposure to helminths, IgG antibodies to Ascaris lumbricoides were measured. RESULTS Exposure to nematodes, as determined by the levels of antibody to A. lumbricoides, was more frequent among farmers' children than non-farmers' children (39.8%vs 31.1%, P = 0.03). This positive serology was found to be significantly associated with high total IgE levels [odds ratio (OR) = 3.05, 95% confidence interval (CI) = 1.81-5.12] and eosinophilia (OR = 2.84, 95% CI = 1.66-4.84). However, no association between anti-nematode serology and the prevalences of asthma, wheeze, hay fever or atopy was found. A weak association for atopy was observed after adjustment for total IgE. CONCLUSION Immunoglobulin G antibodies to A. lumbricoides, as a crude measure of possible exposure to helminths, did not indicate any protective effect against allergic diseases in this population. Although farmers' children had increased antibody levels reactive to helminth parasites indicating exposure, this did not explain the protective effect of farming against atopic diseases.
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Affiliation(s)
- B Karadag
- Children's Hospital, University of Munich, Munich, Germany
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30
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Schram-Bijkerk D, Doekes G, Boeve M, Douwes J, Riedler J, Ublagger E, von Mutius E, Budde J, Pershagen G, van Hage M, Wickman M, Braun-Fahrländer C, Waser M, Brunekreef B. Nonlinear relations between house dust mite allergen levels and mite sensitization in farm and nonfarm children. Allergy 2006; 61:640-7. [PMID: 16629797 DOI: 10.1111/j.1398-9995.2006.01079.x] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Low sensitization rates to common allergens have been observed in farm children, which might be due to high exposure to microbial agents. It is not known how microbial agents modify the association between specific allergen exposure and sensitization. OBJECTIVE To examine the relations between house dust mite allergen exposure and mite sensitization in farm and nonfarm children and to assess the effects of microbial agents levels on this association. METHODS Major mite allergens of Dermatophagoides pteronyssinus (Der p 1) and Dermatophagoides farinae (Der f 1), endotoxin, beta(1,3)-glucans and fungal extracellular polysaccharides were measured in mattress dust of 402 children participating in a cross-sectional study in five European countries. Mite allergen (Der p 1 + Der f 1) levels were divided into tertiles with cut-offs 1.4 and 10.4 microg/g. Sensitization was assessed by measurement of allergen-specific immunoglobulin E against house dust mite. RESULTS Prevalence ratios of mite sensitization for medium and high when compared with low mite allergen levels were 3.1 [1.7-5.7] and 1.4 [0.7-2.8] respectively. Highest mite sensitization rates at intermediate exposure levels were consistently observed across country (except for Sweden) and in both farm and nonfarm children. The shape of the dose-response curve was similar for above and below median mattress microbial agent levels, but the 'sensitization peak' appeared to be lower for above median levels. CONCLUSIONS Our data suggest a bell-shaped dose-response relationship between mite allergen exposure and sensitization to mite allergens. In populations with high microbial agent levels and low sensitization rates, the curve is shifted down.
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Affiliation(s)
- D Schram-Bijkerk
- Institute for Risk Assessment Sciences, University of Utrecht, Utrecht, the Netherlands
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Alfvén T, Braun-Fahrländer C, Brunekreef B, von Mutius E, Riedler J, Scheynius A, van Hage M, Wickman M, Benz MR, Budde J, Michels KB, Schram D, Ublagger E, Waser M, Pershagen G. Allergic diseases and atopic sensitization in children related to farming and anthroposophic lifestyle--the PARSIFAL study. Allergy 2006; 61:414-21. [PMID: 16512802 DOI: 10.1111/j.1398-9995.2005.00939.x] [Citation(s) in RCA: 229] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND The prevalence of allergic diseases has increased rapidly in recent decades, particularly in children. For adequate prevention it is important not only to identify risk factors, but also possible protective factors. The aim of this study was to compare the prevalence of allergic diseases and sensitization between farm children, children in anthroposophic families, and reference children, with the aim to identify factors that may protect against allergic disease. METHODS The study was of cross-sectional design and included 14,893 children, aged 5-13 years, from farm families, anthroposophic families (recruited from Steiner schools) and reference children in Austria, Germany, The Netherlands, Sweden and Switzerland. A detailed questionnaire was completed and allergen-specific IgE was measured in blood. RESULTS Growing up on a farm was found to have a protective effect against all outcomes studied, both self-reported, such as rhinoconjunctivitis, wheezing, atopic eczema and asthma and sensitization (allergen specific IgE > or = 0.35 kU/l). The adjusted odds ratio (OR) for current rhinoconjunctivitis symptoms was 0.50 (95% confidence interval (CI) 0.38-0.65) and for atopic sensitization 0.53 (95% CI 0.42-0.67) for the farm children compared to their references. The prevalence of allergic symptoms and sensitization was also lower among Steiner school children compared to reference children, but the difference was less pronounced and not as consistent between countries, adjusted OR for current rhinoconjunctivitis symptoms was 0.69 (95% CI 0.56-0.86) and for atopic sensitization 0.73 (95% CI 0.58-0.92). CONCLUSIONS This study indicates that growing up on a farm, and to a lesser extent leading an anthroposophic life style may confer protection from both sensitization and allergic diseases in childhood.
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Affiliation(s)
- T Alfvén
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
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Ublagger E, Schreuer M, Eder W, von Mutius E, Benz MR, Braun-Fahrländer C, Moeller A, Brunekreef B, Schram D, Wickman M, Swartz J, Pershagen G, Riedler J. Validation of questions on asthma and wheeze in farming and anthroposophic children. Clin Exp Allergy 2006; 35:1033-9. [PMID: 16120085 DOI: 10.1111/j.1365-2222.2005.02308.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND In most epidemiological surveys the estimated prevalence of asthma is based on questionnaire responses, which may depend on the individual's perception as well as medical consulting habits in a given population. Therefore, measurement of bronchial hyper-responsiveness as a key feature of asthma has been suggested as an objective parameter for asthma. OBJECTIVE The aim of the present study was to validate questionnaire responses on asthma and wheeze against bronchial response to hypertonic saline (HS) (4.5%) in populations previously shown to have a lower prevalence of asthma and allergies: farmers' children and children from anthroposophic families. METHODS Children whose parents had completed a written questionnaire in the cross-sectional PARSIFAL-study were drawn from the following four subgroups: 'farm children' (n=183), 'farm reference children' (n=173), 'Steiner schoolchildren' (n=243) and 'Steiner reference children' (n=179). Overall, 319 children with wheeze in the last 12 months and 459 children without wheeze in the last 12 months performed an HS challenge. RESULTS Odds ratios, sensitivity, specificity, likelihood ratios and measures of association did not differ significantly between the four subgroups. The correlation between the bronchial response to HS and wheeze and asthma questions was moderate and similar for farm children, farm reference children, Steiner schoolchildren and Steiner reference children (kappa for 'wheeze': 0.25, 0.33, 0.31, 0.35, respectively, P=0.754, kappa for 'doctor's diagnosis of asthma': 0.33, 0.19, 0.33, 032, respectively, P=0.499). CONCLUSION The findings from this study suggest that the reliabilitiy of questionnaire responses on asthma and wheeze is comparable between farmers' children, children raised in families with anthroposophic lifestyle and their respective peers.
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Affiliation(s)
- E Ublagger
- Children's Hospital Salzburg, Salzburg, Austria.
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33
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Peters M, Kauth M, Schwarze J, Körner-Rettberg C, Riedler J, Nowak D, Braun-Fahrländer C, von Mutius E, Bufe A, Holst O. Untersuchung der Wirkung von Stallstaubextrakten im Allergiemodell der Maus. Pneumologie 2006. [DOI: 10.1055/s-2005-925512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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34
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Peters M, Kauth M, Schwarze J, Körner-Rettberg C, Riedler J, Nowak D, Braun-Fahrländer C, von Mutius E, Bufe A, Holst O. Inhalation of stable dust extract prevents allergen induced airway inflammation and hyperresponsiveness. Thorax 2005; 61:134-9. [PMID: 16244088 PMCID: PMC2104583 DOI: 10.1136/thx.2005.049403] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND Recent epidemiological studies have shown that growing up on a traditional farm provides protection from the development of allergic disorders such as hay fever and allergic asthma. We present experimental evidence that substances providing protection from the development of allergic diseases can be extracted from dust collected in stables of animal farms. METHODS Stable dust was collected from 30 randomly selected farms located in rural regions of the Alps (Austria, Germany and Switzerland). The dust was homogenised with glass beads and extracted with physiological sodium chloride solution. This extract was used to modulate immune response in a well established mouse model of allergic asthma. RESULTS Treatment of mice by inhalation of stable dust extract during sensitisation to ovalbumin inhibited the development of airway hyperresponsiveness and airway eosinophilia upon challenge, as well as the production of interleukin 5 by splenocytes and of antigen specific IgG(1) and IgE. Dust extract also suppressed the generation of human dendritic cells in vitro. The biological activity of the dust extract was not exclusively mediated by lipopolysaccharide. CONCLUSIONS Stable dust from animal farms contains strong immune modulating substances. These substances can interfere with the development of both cellular and humoral immunity against allergens, thus suppressing allergen sensitisation, airway inflammation, and airway hyperresponsiveness in a murine model of allergic asthma.
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Affiliation(s)
- M Peters
- Department of Experimental Pneumology, Ruhr-University Bochum, Bürkle-de-la-Camp-Platz 1, 44789 Bochum, Germany.
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35
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Schram-Bijkerk D, Doekes G, Douwes J, Boeve M, Riedler J, Ublagger E, von Mutius E, Benz MR, Pershagen G, van Hage M, Scheynius A, Braun-Fahrländer C, Waser M, Brunekreef B. Bacterial and fungal agents in house dust and wheeze in children: the PARSIFAL study. Clin Exp Allergy 2005; 35:1272-8. [PMID: 16238785 DOI: 10.1111/j.1365-2222.2005.02339.x] [Citation(s) in RCA: 116] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Growing up on a farm and an anthroposophic lifestyle are associated with a lower prevalence of allergic diseases in childhood. This might be related to increased inhalatory exposure to microbial agents. OBJECTIVE To assess the association between microbial agents in house dust and atopic wheeze in farm children, Steiner school children and reference children. METHODS Levels of bacterial endotoxin, fungal beta(1,3)-glucans and fungal extracellular polysaccharides (EPS) in mattress and living room floor dust were measured in a population of 270 atopic (=Phadiatop-positive) children with self-reported wheezing, including 168 current atopic wheezers, and 441 non-atopic, non-symptomatic controls. These children were selected from a cross-sectional study in five European countries. RESULTS In the study population as a whole, average levels of mattress dust endotoxin, EPS and glucans were slightly (1.1-1.2-fold; P<0.10) higher in control children than in atopic wheezers. Atopic wheeze was related to mattress levels of endotoxin, EPS and glucans in farm and farm-reference children. However, when adjusting for group (farm vs. farm-reference children), the associations became non-significant whereas the group effect remained. No associations between atopic wheeze and microbial agents were observed in Steiner and Steiner-reference children. For current atopic wheeze, the farm effect became non-significant after adjustment for microbial agent levels. CONCLUSION Not only bacterial endotoxin but also mould components might offer some protection against atopic wheeze in children. However, the protective effect of being raised on a farm was largely unexplained by the mattress microbial agent levels measured in this study.
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Affiliation(s)
- D Schram-Bijkerk
- Institute for Risk Assessment Sciences, University of Utrecht, Utrecht, The Netherlands, and Children's Hospital, Salzburg, Austria.
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36
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Schram D, Doekes G, Boeve M, Douwes J, Riedler J, Ublagger E, von Mutius E, Budde J, Pershagen G, Nyberg F, Alm J, Braun-Fahrländer C, Waser M, Brunekreef B. Bacterial and fungal components in house dust of farm children, Rudolf Steiner school children and reference children--the PARSIFAL Study. Allergy 2005; 60:611-8. [PMID: 15813805 DOI: 10.1111/j.1398-9995.2005.00748.x] [Citation(s) in RCA: 91] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Growing up on a farm and an anthroposophic lifestyle are associated with a lower prevalence of allergic diseases in childhood. It has been suggested that the enhanced exposure to endotoxin is an important protective factor of farm environments. Little is known about exposure to other microbial components on farms and exposure in anthroposophic families. OBJECTIVE To assess the levels and determinants of bacterial endotoxin, mould beta(1,3)-glucans and fungal extracellular polysaccharides (EPS) in house dust of farm children, Steiner school children and reference children. METHODS Mattress and living room dust was collected in the homes of 229 farm children, 122 Steiner children and 60 and 67 of their respective reference children in five European countries. Stable dust was collected as well. All samples were analysed in one central laboratory. Determinants were assessed by questionnaire. RESULTS Levels of endotoxin, EPS and glucans per gram of house dust in farm homes were 1.2- to 3.2-fold higher than levels in reference homes. For Steiner children, 1.1- to 1.6-fold higher levels were observed compared with their reference children. These differences were consistently found across countries, although mean levels varied considerably. Differences between groups and between countries were also significant after adjustment for home and family characteristics. CONCLUSION Farm children are not only consistently exposed to higher levels of endotoxin, but also to higher levels of mould components. Steiner school children may also be exposed to higher levels of microbial agents, but differences with reference children are much less pronounced than for farm children. Further analyses are, however, required to assess the association between exposure to these various microbial agents and allergic and airway diseases in the PARSIFAL population.
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Affiliation(s)
- D Schram
- Institute for Risk Assessment Sciences, University of Utrecht, Utrecht, The Netherlands
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37
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Waser M, von Mutius E, Riedler J, Nowak D, Maisch S, Carr D, Eder W, Tebow G, Schierl R, Schreuer M, Braun-Fahrländer C. Exposure to pets, and the association with hay fever, asthma, and atopic sensitization in rural children. Allergy 2005; 60:177-84. [PMID: 15647038 DOI: 10.1111/j.1398-9995.2004.00645.x] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND An increasing number of studies report pet exposure to be associated with lower risk of asthma and allergies. This 'protective pet effect' has been suggested to result from a modified T-helper (Th)2-cell response, or because of increased microbial load in homes where pets are kept. We examined the associations between pet contact and the occurrence of asthma and allergies in children of the rural Allergy and Endotoxin (ALEX) population, taking farm animal contact, endotoxin and cat allergen levels in mattress dust into account. METHODS Information about contact with pets and farm animals, asthma and allergy were collected for 812 children by a standardized parents' questionnaire and an interview. Mattress dust endotoxin and cat allergen levels as well as specific IgE and IgG4 antibodies to Fel d1 were determined. RESULTS Current contact with dogs was inversely associated with diagnosed hay fever (OR 0.26, 95% CI 0.11-0.57), diagnosed asthma (OR 0.29, 95% CI 0.12-0.71), sensitization to cat allergen (OR 0.48, 95% CI 0.23-0.99) and to grass pollen (OR 0.55, 95% CI 0.33-0.94), but not with increased IgG4 levels. Early and current contact with cats were associated with reduced risk of wheezing (OR 0.48, 95% CI 0.23-1.00, and OR 0.49, 95% CI 0.26-0.92, respectively) and grass pollen sensitization. Adjustment for farm animal contact but not for endotoxin and cat allergen exposure attenuated these associations and the effect of pet was stronger among farmers' children. CONCLUSION Although pet exposure was very frequent in this rural population, the inverse relation between current dog contact, asthma and allergy was mostly explained by simultaneously occurring exposure to stable animals or was restricted to farm children. In addition, a subtle form of pet avoidance may contribute to the protective effect of pet.
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Affiliation(s)
- M Waser
- Institute of Social and Preventive Medicine, University of Basel, Basel, Switzerland
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38
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Waser M, Schierl R, von Mutius E, Maisch S, Carr D, Riedler J, Eder W, Schreuer M, Nowak D, Braun-Fahrländer C. Determinants of endotoxin levels in living environments of farmers' children and their peers from rural areas. Clin Exp Allergy 2004; 34:389-97. [PMID: 15005732 DOI: 10.1111/j.1365-2222.2004.01873.x] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Lower frequencies of asthma and hayfever have been observed in children with contact to livestock. At school age, the amount of endotoxin measured in the dust of children's mattresses is inversely related to the occurrence of atopic asthma, hayfever and atopic sensitization both in children from farming and non-farming households. OBJECTIVE The aim of the present study was to investigate which home and lifestyle characteristics of farm and non-farm families contribute to endotoxin levels measured in different indoor home environments. METHODS In the framework of the Allergy and Endotoxin (ALEX) Study, endotoxin was measured in dust samples from the living room floor and the child's mattress of 319 farmers' families and 493 non-farming families, and in settled dust from stables. Endotoxin content of all dust samples was determined by a kinetic Limulus assay (Limulus-Amebocyte-Lysate test). Information about the child's activities on farms, home characteristics and cleaning behaviours was obtained from parental questionnaires. RESULTS Endotoxin levels in stables did not predict the amount of endotoxin measured in floors or mattresses. However, a dose-dependent association between the child's activity on the farm and indoor home endotoxin levels was observed, both in farm and non-farm children. In non-farm children pet keeping and the frequency of floor cleaning were additionally associated with endotoxin levels, whereas in farm children parental farm activities, study area, time since last cleaning, the mattress type as well as younger age of the children contributed to increased microbial exposure. CONCLUSION These results demonstrate that regular contact to farm animals increases indoor home endotoxin concentrations, both in farm and non-farm children, and might thus explain the protective effect of contact to livestock on atopic outcomes. To assess children's individual exposure to a microbial environment, measures of mattress dust exposure are needed as stable endotoxin concentrations were not associated with indoor home levels.
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Affiliation(s)
- M Waser
- Institute of Social and Preventive Medicine, University of Basel, Switzerland.
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39
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Joos GF, O'Connor B, Anderson SD, Chung F, Cockcroft DW, Dahlén B, DiMaria G, Foresi A, Hargreave FE, Holgate ST, Inman M, Lötvall J, Magnussen H, Polosa R, Postma DS, Riedler J. Indirect airway challenges. Eur Respir J 2003; 21:1050-68. [PMID: 12797503 DOI: 10.1183/09031936.03.00008403] [Citation(s) in RCA: 263] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Indirect challenges act by causing the release of endogenous mediators that cause the airway smooth muscle to contract. This is in contrast to the direct challenges where agonists such as methacholine or histamine cause airflow limitation predominantly via a direct effect on airway smooth muscle. Direct airway challenges have been used widely and are well standardised. They are highly sensitive, but not specific to asthma and can be used to exclude current asthma in a clinic population. Indirect bronchial stimuli, in particular exercise, hyperventilation, hypertonic aerosols, as well as adenosine, may reflect more directly the ongoing airway inflammation and are therefore more specific to identify active asthma. They are increasingly used to evaluate the prevalence of bronchial hyperresponsiveness and to assess specific problems in patients with known asthma, e.g. exercise-induced bronchoconstriction, evaluation before scuba diving. Direct bronchial responsiveness is only slowly and to a modest extent, influenced by repeated administration of inhaled steroids. Indirect challenges may reflect more closely acute changes in airway inflammation and a change in responsiveness to an indirect stimulus may be a clinically relevant marker to assess the clinical course of asthma. Moreover, some of the indirect challenges, e.g. hypertonic saline and mannitol, can be combined with the assessment of inflammatory cells by induction of sputum.
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Affiliation(s)
- G F Joos
- Dept Respiratory Diseases, Ghent University Hospital, De Pintelaan 185, B-9000 Ghent, Belgium.
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40
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Riedler J, Braun-Fahrländer C, Eder W, Schreuer M, Waser M, Maisch S, Carr D, Schierl R, Nowak D, von Mutius E. Exposure to farming in early life and development of asthma and allergy: a cross-sectional survey. Lancet 2001; 358:1129-33. [PMID: 11597666 DOI: 10.1016/s0140-6736(01)06252-3] [Citation(s) in RCA: 936] [Impact Index Per Article: 40.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND A farming environment protects against development of asthma, hay fever, and atopic sensitisation in children. We aimed to establish whether increased exposure to microbial compounds has to occur early in life to affect maturation of the immune system and thereby reduces risk for development of allergic diseases. METHODS We did a cross-sectional survey in rural areas of Austria, Germany, and Switzerland. 2618 (75%) of 3504 parents of 6-13-year-old children completed a standardised questionnaire on asthma, hay fever, and atopic eczema. Children from farming families, and a random sample of non-farmers' children, who gave consent for blood samples to be obtained for measurements of specific serum IgE antibodies to common allergens were invited to participate (n=901). FINDINGS Exposure of children younger than 1 year, compared with those aged 1-5 years, to stables and consumption of farm milk was associated with lower frequencies of asthma (1% [3/218] vs 11% [15/138]), hay fever (3% [7] vs 13% [18]), and atopic sensitisation (12% [27] vs 29% [40]). Protection against development of asthma was independent from effect on atopic sensitisation. Continual long-term exposure to stables until age 5 years was associated with the lowest frequencies of asthma (0.8% [1/122]), hay fever (0.8% [1]), and atopic sensitisation (8.2% [10]). INTERPRETATION Long-term and early-life exposure to stables and farm milk induces a strong protective effect against development of asthma, hay fever, and atopic sensitisation.
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Affiliation(s)
- J Riedler
- Paediatric Pulmonology and Allergology, Children's Hospital, Salzburg, Austria.
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41
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von Mutius E, Braun-Fahrländer C, Schierl R, Riedler J, Ehlermann S, Maisch S, Waser M, Nowak D. Exposure to endotoxin or other bacterial components might protect against the development of atopy. Clin Exp Allergy 2000; 30:1230-4. [PMID: 10971468 DOI: 10.1046/j.1365-2222.2000.00959.x] [Citation(s) in RCA: 422] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND Several recent studies have shown that growing up on a farm confers significant protection against the development of atopy. These findings point particularly towards the importance of exposure to stable dust and farm animals. It has furthermore been reported that endotoxin, an intrinsic part of the outer membrane of gram negative bacteria, is abundant in environments where livestock and poultry is kept. The aim of this study was therefore to measure the level of environmental endotoxin exposure in homes of farmers' children, children with regular contact to livestock and control children with no contact to farm animals. METHODS Eighty-four farming and nonfarming families were identified in rural areas in Southern Germany and Switzerland. Samples of settled and airborne dust were collected in stables, and of settled dust indoors from kitchen floors and the children's mattresses. Endotoxin concentrations were determined by a kinetic Limulus assay. RESULTS Endotoxin concentrations were highest in stables of farming families, but were also significantly higher indoors in dust from kitchen floors (143 EU/mg vs 39 EU/mg, P < 0.001) and children's mattresses (49479 EU/m2 vs 9383 EU/m2, P < 0.001) as compared to control children from nonfarming families. In addition, endotoxin levels were also significantly higher in mattresses and dust from kitchen floors in households where children had regular contact to farm animals (38.6 EU/mg and 23340 EU/m2, respectively) as compared to control subjects. CONCLUSION We propose that the level of environmental exposure to endotoxin and other bacterial wall components is an important protective determinant for the development of atopic diseases in childhood.
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Affiliation(s)
- E von Mutius
- University Children's Hospital Munich, Germany; Institute of Social and Preventive Medicine, University of Basel, Switzerland
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42
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Affiliation(s)
- J Grigg
- University Department of Child Health, Leicester Royal Infirmary, United Kingdom.
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43
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Affiliation(s)
- M D Shields
- Department of Child Health, Queens University of Belfast, and Institute of Clinical Science, Belfast, Northern Ireland.
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44
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Abstract
BACKGROUND AND OBJECTIVES In some studies, the prevalence of hay fever and asthma has been found to be lower in children from rural areas than in children from an urban environment. We hypothesized that living on a farm might be protective against development of allergic sensitization and allergic diseases. METHODS In a cross-sectional survey, parents of 2283 children aged 8-10 years from a mostly rural area in Austria answered a standardized questionnaire on allergic diseases and environmental factors. 1137 children performed a skin prick test to seven local allergens. RESULTS The prevalence of hay fever (3.1 vs 10.3%, P = 0.0002), asthma (1.1 vs 3.9%, P = 0.017) and a positive skin prick reactivity to at least one of the common local allergens (18.8 vs 32.7%, P = 0. 001) was significantly lower in children living on a farm than in children from a non-farming environment. In a multivariate logistic regression model, adjusting for genetic background, parent education, living and housing conditions and dietary factors did not change the odds ratio for the association of farming and allergic sensitization. Only after including 'regular contact with livestock and poultry' into the model did the odds ratio change significantly (cOR 0.48 95% CI 0.30-0.75 to aOR 0.75 95% CI 0.37-1.52) indicating an association between regular contact with farm animals and reduced risk of atopic sensitization. CONCLUSION Possible explanations for the lower prevalence of hay fever, asthma and allergic sensitization in children living on a farm might be the development of immunotolerance or the stimulation of TH1 cells and suppression of TH2 cells by increased exposure of farm children to microbial antigens in the stables or farmhouses.
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Affiliation(s)
- J Riedler
- Paediatric Pulmonology, Children's Hospital Salzburg, Austria.
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45
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Frischer T, Eber E, Eichler I, Horak E, Riedler J, Götz M, Zach M. [Consensus guidelines for drug therapy of bronchial asthma in children and adolescents. Austrian Society of Pediatrics and Adolescent Medicine and Austrian Society for Lung Diseases and Tuberculosis]. Wien Klin Wochenschr 1999; 111:900-2. [PMID: 10599154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Affiliation(s)
- T Frischer
- Universitäts-Kinderklinik, Wien, Osterreich
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46
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Abstract
Hypertonic saline challenge has become a standardized method for measuring airway responsiveness. However, there is still uncertainty about the occurrence of a late asthmatic response. Therefore, the present study was designed to assess a possible late asthmatic response after hypertonic saline challenge in children. Twenty-one children with mild to moderate bronchial hyperresponsiveness were studied. On days 1 and 2, forced expiratory volume in one second (FEV1) was measured hourly from 10:00 h to 22:00 h to assess diurnal variation of lung function. On the third study day, a hypertonic saline challenge was performed and FEV1 was measured as on control days. The possibility of a late asthmatic response was tested by comparing FEV1 levels up to 12 h after the challenge on the intervention day to FEV1 levels on control days. In no subjects were the FEV1 values following the challenge found to be considerably below the individual mean of the control days. Furthermore, a nonparametric approach was applied for each child and the population looked into as a whole. Again, no late asthmatic response was detectable. The results of this study suggest that in children with mild to moderate bronchial hyperresponsiveness a late asthmatic response does not occur 4-12 h after a 4.5% saline challenge.
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Affiliation(s)
- W Eder
- Paediatric Pulmonology, Children's Hospital Salzburg, Austria
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47
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Abstract
Very little is known about alveolar macrophage (AM) immunological function in early childhood. Using nonbronchoscopic bronchoalveolar lavage (BAL), this study sought to compare the proportion, number, and function of AM between very young and older children. BAL fluid (BALF) leukocyte parameters were determined in 63 children, and data divided into 3 age groups: group 1 (<2 yrs), group 2 (> or =2-< or =5 yrs) and group 3 (> or =6-< or =17 years). In a further subgroup of children, AM function and immune receptor expression were assessed, and data categorized into two age groups: <2 yrs and > or =2 yrs of age. Compared to groups 2 and 3, the AM percentage in the BAL in group 1 was significantly increased (median: 98% versus 92% and 91%), as was the albumin-adjusted AM concentration. AM from children <2 yrs expressed less human leukocyte antigen (HLA)-DR (versus > or =2 yrs of age), were less effective in reducing nitro blue tetrazolium, and released less interleukin (IL)-1 and tumour necrosis factor on lipopolysaccharide stimulation. There was no difference in release of IL-6, expression of intercellular adhesion molecule-1 (CD54), and AM stimulation of allogeneic T-cells, between children <2 yrs and > or =2 yrs of age. It was concluded that the capacity of alveolar macrophage to stimulate T-cells is not enhanced in early childhood, and that immaturity of alveolar macrophage function may contribute to an increased susceptibility to respiratory infections in this age group.
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Affiliation(s)
- J Grigg
- Dept of Thoracic Medicine, Royal Children's Hospital Melbourne, Victoria, Australia
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48
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Abstract
Viral colds are an important cause of respiratory symptoms in normal children. Studies in adults suggest that inflammation in the lower respiratory tract is associated with viral colds, but there are no data regarding inflammation and viral infection in the lower airway of normal children with colds. We, therefore, studied the lower airway of two groups of children: Group I, those with active coryzal symptoms and a respiratory virus isolated from bronchoalveolar lavage fluid (BALF); and Group II: asymptomatic children who had had a clinical cold within the previous 2 weeks and no respiratory virus in BALF. Both groups were compared to age- and weight-matched normal noninfected controls, who had had no coryzal symptoms for at least 8 weeks. Viruses isolated from BALF of Group I (n = 7) were: respiratory syncytial virus (n = 2), rhinovirus (n = 3), parainfluenza I (n = 1), and echovirus 11 (n = 1). Compared to normal controls, Group I had an increased BALF lymphocyte and neutrophil differential count (P < 0.05), a concomitant depressed alveolar macrophage differential count (P < 0.05), and increased BALF concentrations of soluble intercellular adhesion molecule-1 (sICAM-1) (P < 0.05, n = 6), total protein (P < 0.05, n = 6) and albumin (P < 0.05, n = 7). Similar changes were seen in Group II (n = 22), with an increased BALF neutrophil (P < 0.05) and lymphocyte (P < 0.01) differential count, and increased concentrations of sICAM-1 (P < 0.01, n = 15), total protein (P < 0.0001, n = 9) and albumin (P = 0.05, n = 17). Our results suggest that inflammation and viral infection in the lower airway are present during active colds, and that inflammation is also present during the convalescent period.
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Affiliation(s)
- J Grigg
- Department of Thoracic Medicine, Royal Children's Hospital, Melbourne, Victoria, Australia.
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49
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Kurz H, Riedler J. Inhalation devices for the treatment of asthma--how much do paediatricians know about their correct use? Wien Klin Wochenschr 1999; 111:443-5. [PMID: 10420496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
The present study was undertaken to assess the practical and theoretical knowledge of paediatricians in regard of inhalation devices for the treatment of childhood asthma. Forty-one paediatricians (39 from different parts of Austria and 2 from Switzerland), all of them running hospital-based chest clinics, were tested in regard of 4 items (Diskhaler, Metered dose inhaler (MDI) with Aerochamber, cleaning of an Aerochamber and a Pari Junior jet nebuliser). Practical performance and theoretical knowledge were assessed. Scoring was done by one consultant using a score of 1-5, with 1 point being given for the poorest performance and 5 points for the best. Overall performance was acceptable with a median of 13 points (the maximum achievable score was 20), but there were some deficits in the practical use of special devices. Better training on the use of different devices for inhalation therapy of asthmatic children is desirable.
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Affiliation(s)
- H Kurz
- Kinderinterne Abteilung, Sozialmedizinisches Zentrum Ost, Wien, Austria
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50
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Grigg J, Riedler J, Robertson CF. Soluble intercellular adhesion molecule-1 in the bronchoalveolar lavage fluid of normal children exposed to parental cigarette smoke. Eur Respir J 1999; 13:810-3. [PMID: 10362045 DOI: 10.1034/j.1399-3003.1999.13d19.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This study sought to test the hypothesis that normal children exposed to parental cigarette smoke have increased bronchoalveolar lavage (BAL) fluid levels of soluble intercellular adhesion molecule (sICAM)-1. Cells and solutes from the lower airway of normal children were obtained by nonbronchoscopic BAL using three aliquots of 1 mL x kg body weight(-1) normal saline, prior to elective orthopaedic surgery. Children with evidence of recent or ongoing infection, atopic disease, previous history of wheeze, and chronic respiratory symptoms were excluded. Twelve children with parents who smoked (group 1) were paired with 12 age- and weight-matched controls with self-reported nonsmoking parents (group 2). There was no significant difference (group 1 versus 2) in the volume of BAL fluid recovered (median 29.0 versus 28.7 mL), the percentage of alveolar macrophages (92.5 versus 91.8%), neutrophils (1.1 versus 2.1%), lymphocytes (5.3 versus 5.6%) and eosinophils (0 versus 0%), and the total BAL fluid leukocyte concentration (80 versus 61 x 10(3) cells x mL(-1)). BAL fluid albumin concentration was similar between the two groups (0.033 versus 0.020 mg x mL(-1)). sICAM-1 was detected in all BAL fluid samples, and was significantly increased in group 1 (39.2 versus 22.5 ng x mL(-1), p<0.01). It was concluded that exposure of children to parental cigarette smoke is associated with increased soluble intercellular adhesion molecule-1 concentrations in the bronchoalveolar lavage fluid and this may reflect an altered activation of pulmonary immune cells.
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Affiliation(s)
- J Grigg
- Dept of Thoracic Medicine, Royal Children's Hospital, Melbourne, Victoria, Australia
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