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Kyvsgaard JN, Hesselberg LM, Sunde RB, Brustad N, Vahman N, Schoos AMM, Bønnelykke K, Stokholm J, Chawes BL. Burden and Subtypes of Early Life Infections Increase the Risk of Asthma. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY. IN PRACTICE 2024; 12:2056-2065.e10. [PMID: 38609018 DOI: 10.1016/j.jaip.2024.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 03/08/2024] [Accepted: 04/02/2024] [Indexed: 04/14/2024]
Abstract
BACKGROUND Early life respiratory tract infections have been linked to the development of asthma, but studies on the burden and subtypes of common infections in asthma development are sparse. OBJECTIVE To examine the association between burden of early life infections, including subtypes, with the risk of asthma from age 3 to 10 years and lung function at age 10 years. METHODS We included 662 children from the Copenhagen Prospective Studies on Asthma in Childhood 2010 birth cohort, for whom infections such as colds, acute tonsillitis, acute otitis media, pneumonia, gastroenteritis, and fever were registered prospectively in daily diaries at age 0 to 3 years and asthma was diagnosed longitudinally from age 3 to 10 years. The association between the burden of infection and subtypes and risk of asthma was analyzed by generalized estimating equations. RESULTS The children experienced a median of 16 infections (interquartile range, 12-23 infections) at age 0 to 3 years. Children with a high burden of infections (above the median) had an increased risk of asthma at age 3 to 10 years (adjusted odds ratio = 3.61; 95% CI, 2.39-5.45; P < .001), which was driven by colds, pneumonia, gastroenteritis, and fever episodes (P < .05) but not by acute otitis media and tonsillitis. Lower lung function measures at age 10 years were associated with the burden of pneumonia but not the overall infection burden. The association between colds and the risk of asthma was significantly higher in children with allergic rhinitis at age 6 years (P interaction = .032). CONCLUSION A high burden of early life infections in terms of colds, pneumonia, gastroenteritis, and fever is associated with an increased risk of developing asthma, particularly in children with respiratory allergy. Strategies to diminish these early life infections may offer a path for the primary prevention of childhood asthma.
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Affiliation(s)
- Julie Nyholm Kyvsgaard
- Copenhagen Prospective Studies on Asthma in Childhood, Department of Pediatrics, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark; Department of Pediatrics, Slagelse Hospital, Slagelse, Denmark
| | - Laura Marie Hesselberg
- Copenhagen Prospective Studies on Asthma in Childhood, Department of Pediatrics, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Rikke Bjersand Sunde
- Copenhagen Prospective Studies on Asthma in Childhood, Department of Pediatrics, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark; Department of Pediatrics, Slagelse Hospital, Slagelse, Denmark
| | - Nicklas Brustad
- Copenhagen Prospective Studies on Asthma in Childhood, Department of Pediatrics, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Nilo Vahman
- Copenhagen Prospective Studies on Asthma in Childhood, Department of Pediatrics, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Ann-Marie Malby Schoos
- Copenhagen Prospective Studies on Asthma in Childhood, Department of Pediatrics, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark; Department of Pediatrics, Slagelse Hospital, Slagelse, Denmark
| | - Klaus Bønnelykke
- Copenhagen Prospective Studies on Asthma in Childhood, Department of Pediatrics, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Jakob Stokholm
- Copenhagen Prospective Studies on Asthma in Childhood, Department of Pediatrics, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark; Department of Pediatrics, Slagelse Hospital, Slagelse, Denmark; Section of Microbiology and Fermentation, Department of Food Science, University of Copenhagen, Copenhagen, Denmark
| | - Bo Lund Chawes
- Copenhagen Prospective Studies on Asthma in Childhood, Department of Pediatrics, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark; Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
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Kyvsgaard JN, Brustad N, Hesselberg LM, Vahman N, Thorsen J, Schoos AMM, Bønnelykke K, Stokholm J, Chawes BL. Key risk factors of asthma-like symptoms are mediated through infection burden in early childhood. J Allergy Clin Immunol 2024; 153:684-694. [PMID: 37995855 DOI: 10.1016/j.jaci.2023.11.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 11/03/2023] [Accepted: 11/14/2023] [Indexed: 11/25/2023]
Abstract
BACKGROUND Risk factors of asthma-like symptoms in childhood may act through an increased infection burden because infections often trigger these symptoms. OBJECTIVE We sought to investigate whether the effect of established risk factors of asthma-like episodes in early childhood is mediated through burden and subtypes of common infections. METHODS The study included 662 children from the Copenhagen Prospective Studies on Asthma in Childhood 2010 mother-child cohort, in which infections were registered prospectively in daily diaries from age 0 to 3 years. The association between established risk factors of asthma-like episodes and infection burden was analyzed by quasi-Poisson regressions, and mediation analyses were performed for significant risk factors. RESULTS In the first 3 years of life, the children experienced a median of 16 (interquartile range, 12-23) infectious episodes. We found that the infection burden significantly (PACME < .05) mediated the association of maternal asthma (36.6% mediated), antibiotics during pregnancy (47.3%), siblings at birth (57.7%), an asthma exacerbation polygenic risk score (30.6%), and a bacterial airway immune score (80.2%) with number of asthma-like episodes, whereas the higher number of episodes from male sex, low birth weight, low gestational age, and maternal antibiotic use after birth was not mediated through an increased infection burden. Subtypes of infections driving the mediation were primarily colds, pneumonia, gastroenteritis, and fever, but not acute otitis media or acute tonsillitis. CONCLUSIONS Several risk factors of asthma-like symptoms in early childhood act through an increased infection burden in the first 3 years of life. Prevention of infectious episodes may therefore be beneficial to reduce the burden of asthma-like symptoms in early childhood.
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Affiliation(s)
- Julie Nyholm Kyvsgaard
- Copenhagen Prospective Studies on Asthma in Childhood (COPSAC), Department of Pediatrics, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark; Department of Pediatrics, Slagelse Hospital, Slagelse, Denmark
| | - Nicklas Brustad
- Copenhagen Prospective Studies on Asthma in Childhood (COPSAC), Department of Pediatrics, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Laura Marie Hesselberg
- Copenhagen Prospective Studies on Asthma in Childhood (COPSAC), Department of Pediatrics, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Nilo Vahman
- Copenhagen Prospective Studies on Asthma in Childhood (COPSAC), Department of Pediatrics, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Jonathan Thorsen
- Copenhagen Prospective Studies on Asthma in Childhood (COPSAC), Department of Pediatrics, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Ann-Marie Malby Schoos
- Copenhagen Prospective Studies on Asthma in Childhood (COPSAC), Department of Pediatrics, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark; Department of Pediatrics, Slagelse Hospital, Slagelse, Denmark
| | - Klaus Bønnelykke
- Copenhagen Prospective Studies on Asthma in Childhood (COPSAC), Department of Pediatrics, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Jakob Stokholm
- Copenhagen Prospective Studies on Asthma in Childhood (COPSAC), Department of Pediatrics, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark; Department of Pediatrics, Slagelse Hospital, Slagelse, Denmark; Section of Microbiology and Fermentation, Department of Food Science, University of Copenhagen, Copenhagen, Denmark
| | - Bo Lund Chawes
- Copenhagen Prospective Studies on Asthma in Childhood (COPSAC), Department of Pediatrics, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark.
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Duong QA, Pittet LF, Curtis N, Zimmermann P. Antibiotic exposure and adverse long-term health outcomes in children: a systematic review and meta-analysis. J Infect 2022; 85:213-300. [PMID: 35021114 DOI: 10.1016/j.jinf.2022.01.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 01/04/2022] [Indexed: 12/15/2022]
Abstract
BACKGROUND Antibiotics are among the most commonly used drugs in children. In addition to inducing antibiotic resistance, antibiotic exposure has been associated with long-term adverse health outcomes. METHODS A systematic search using PRISMA Guidelines to identify original studies reporting associations between antibiotic exposure and long-term adverse health outcomes in children. Overall pooled estimates of the odds ratios (ORs) were obtained using fixed or random-effects models. RESULTS We identified 160 observational studies investigating 21 outcomes in 22,103,129 children. Antibiotic exposure was associated with an increased risk of atopic dermatitis (OR 1.40, 95% confidence interval (CI) 1.30-1.52, p<0.01), allergic symptoms (OR 1.93, 95%CI 1.66-2.26, p<0.01), food allergies (OR 1.35, 95%CI 1.20-1.52, p<0.01), allergic rhinoconjunctivitis (OR 1.66, 95%CI 1.51-1.83, p<0.01), wheezing (OR 1.81, 95%CI 1.65-1.97, p<0.01), asthma (OR 1.96, 95%CI 1.76-2.17, p<0.01), increased weight gain or overweight (OR 1.18, 95%CI 1.11-1.26, p<0.01), obesity (OR 1.21, 95%CI 1.05-1.40, p<0.01), juvenile idiopathic arthritis (OR 1.74, 95%CI 1.21-2.52, p<0.01), psoriasis (OR 1.75, 95%CI 1.44-2.11, p<0.01), autism spectrum disorders (OR 1.19, 95%CI 1.04-1.36, p=0.01) and neurodevelopment disorders (OR 1.29, 95%CI 1.09-1.53, p<0.01). Dose-response effects and stronger effects with broad-spectrum antibiotic were often reported. Antibiotic exposure was not associated with an altered risk of allergic sensitisation, infantile colic, abdominal pain, inflammatory bowel disease, celiac disease, type 1 diabetes, fluorosis, and attention deficit hyperactivity disorder. CONCLUSION Although a causal association cannot be determined from these studies, the results support the meticulous application of sound antibiotic stewardship to avoid potential adverse long-term health outcomes.
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Affiliation(s)
- Quynh Anh Duong
- Faculty of Science and Medicine, University of Fribourg, Fribourg, Switzerland
| | - Laure F Pittet
- Department of Paediatrics, The University of Melbourne, Parkville, Australia; Infectious Diseases Research Group, Murdoch Children's Research Institute, Parkville, Australia; Infectious Diseases Unit, The Royal Children's Hospital Melbourne, Parkville, Australia; Unit of Pediatric Infectious Diseases, Department of Pediatrics, Gynecology & Obstetrics, University Hospitals of Geneva and Faculty of Medicine, Geneva, Switzerland
| | - Nigel Curtis
- Department of Paediatrics, The University of Melbourne, Parkville, Australia; Infectious Diseases Research Group, Murdoch Children's Research Institute, Parkville, Australia; Infectious Diseases Unit, The Royal Children's Hospital Melbourne, Parkville, Australia
| | - Petra Zimmermann
- Faculty of Science and Medicine, University of Fribourg, Fribourg, Switzerland; Infectious Diseases Research Group, Murdoch Children's Research Institute, Parkville, Australia; Department of Paediatrics, Fribourg Hospital HFR, Fribourg, Switzerland.
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Martin D, Wachtmeister J, Ludwigs K, Jenetzky E. The FeverApp registry - ecological momentary assessment (EMA) of fever management in families regarding conformity to up-to-date recommendations. BMC Med Inform Decis Mak 2020; 20:249. [PMID: 33004050 PMCID: PMC7528253 DOI: 10.1186/s12911-020-01269-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 09/17/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Fever is one of the most common symptoms of pediatric consultations and its mismanagement is a health care burden. Guidelines on fever management are incoherent and data on fever management are still missing. This study protocol describes an app-based registry to evaluate the fever management of parents. OBJECTIVE The primary objectives are to assess guideline adherence (primary outcome) and parental confidence in managing fever, and thus to reduce overuse of antipyretics, antibiotics and healthcare providers. Secondary objectives include creating a "FeverApp" that will enable parents to handle fever safely and to use the FeverApp registry as symptom and fever management diary. Further objectives include developing and testing a symptom-led registry model by app-based acquisition of parental entries of febrile illness cycle data and developing and testing models of how an interactive app-based registry can enable nationwide EMA information to inform science, guideline and policy makers, and the public. METHODS A FeverApp, guiding parents and carers in handling and documenting fever, will be developed with family pediatricians according to current guidelines and recommended for all parents in Germany. A registry will anonymously document features, management and outcomes of febrile episodes: basic sociodemographic and medical information, initial symptoms, course of fever, pharmacological and non-pharmacological interventions, consultations with doctors, outcomes, fever-associated fears, and app satisfaction. RESULTS This app may improve communication quality and health, e.g. asthma and antimicrobial resistance. Results will be published via website www.feverapp.de . TRIAL REGISTRATION This app-based registry protocol is registered in the German Clinical Trials Register (DRKS) with registration number: DRKS00016591 .
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Affiliation(s)
- David Martin
- School of Medicine, Faculty of Health, University of Witten/Herdecke, Alfred-Herrhausen-Straße 50, D 58448, Witten, Germany
- University Children's Hospital, University of Tübingen, Tübingen, Germany
| | - Jana Wachtmeister
- School of Medicine, Faculty of Health, University of Witten/Herdecke, Alfred-Herrhausen-Straße 50, D 58448, Witten, Germany
| | - Kai Ludwigs
- Happiness Research Organisation, Düsseldorf, Germany
| | - Ekkehart Jenetzky
- School of Medicine, Faculty of Health, University of Witten/Herdecke, Alfred-Herrhausen-Straße 50, D 58448, Witten, Germany.
- Department of Child and Adolescent Psychiatry and Psychotherapy, University Medical Center Mainz, Mainz, Germany.
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Donovan BM, Abreo A, Ding T, Gebretsadik T, Turi KN, Yu C, Ding J, Dupont WD, Stone CA, Hartert TV, Wu P. Dose, Timing, and Type of Infant Antibiotic Use and the Risk of Childhood Asthma. Clin Infect Dis 2020; 70:1658-1665. [PMID: 31149702 PMCID: PMC7145998 DOI: 10.1093/cid/ciz448] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 05/29/2019] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Aspects of infant antibiotic exposure and its association with asthma development have been variably explored. We aimed to evaluate comprehensively and simultaneously the impact of dose, timing, and type of infant antibiotic use on the risk of childhood asthma. METHODS Singleton, term-birth, non-low-birth-weight, and otherwise healthy children enrolled in the Tennessee Medicaid Program were included. Infant antibiotic use and childhood asthma diagnosis were ascertained from prescription fills and healthcare encounter claims. We examined the association using multivariable logistic regression models. RESULTS Among 152 622 children, 79% had at least 1 antibiotic prescription fill during infancy. Infant antibiotic use was associated with increased odds of childhood asthma in a dose-dependent manner, with a 20% increase in odds (adjusted odds ratio [aOR], 1.20 [95% confidence interval {CI}, 1.19-1.20]) for each additional antibiotic prescription filled. This significant dose-dependent relationship persisted after additionally controlling for timing and type of the antibiotics. Infants who had broad-spectrum-only antibiotic fills had increased odds of developing asthma compared with infants who had narrow-spectrum-only fills (aOR, 1.10 [95% CI, 1.05-1.19]). There was no significant association between timing, formulation, anaerobic coverage, and class of antibiotics and childhood asthma. CONCLUSIONS We found a consistent dose-dependent association between antibiotic prescription fills during infancy and subsequent development of childhood asthma. Our study adds important insights into specific aspects of infant antibiotic exposure. Clinical decision making regarding antibiotic stewardship and prevention of adverse effects should be critically assessed prior to use during infancy.
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Affiliation(s)
- Brittney M Donovan
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Andrew Abreo
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Tan Ding
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Tebeb Gebretsadik
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Kedir N Turi
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Chang Yu
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Juan Ding
- Department of School of Mathematics and Statistics, Guangxi Normal University, Guilin, China
| | - William D Dupont
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Cosby A Stone
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Tina V Hartert
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Pingsheng Wu
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, Tennessee
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Abstract
Antibiotics during infancy, delivery, and breastfeeding affect the intestinal microbiota in early life and is associated with allergic disease. Gastroenteritis (GE) during infancy also affects intestinal microbiota in early life, however, its relationship to allergic disease has not been investigated.Data of 45,499 males and 49,430 females, from birth to 5 years of age, were collected from a national database in Taiwan. Subjects were categorized into early GE (GE within 0-6 months) and non-early GE group (no GE within 0-6 months). The rates of asthma (AS), allergic rhinitis (AR), and atopic dermatitis (AD) over 5 years were evaluated and compared between the groups. In patients with AS, AR, and AD, the number of clinical visits and drug prescriptions for the allergic disease was also evaluated to assess the effect of early GE on allergic disease.After adjusting for the effect of GE in later life and other factors, the rates of AS [OR (odds ratio) 1.54, 95% confidence interval (CI) 1.48-1.60], AR [OR 1.49, 95% CI 1.45-1.54], and AD [OR 1.40, 95% CI 1.33-1.47] were higher in the early GE group than in the non-early GE group. The magnitude of the increase was higher in females than in males. In those with AS, AR, and AD, the number of clinical visits and drug prescriptions was not different between the early GE and non-early GE groups. In children with early GE, good control of GE in the following years lowered the rate of allergic disease.Early-life GE was associated with increased rates of AS, AR, and AD in later life and this was trend more prominent in females.
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Affiliation(s)
- Hui-Hsien Pan
- School of Medicine, Chung Shan Medical University
- Division of Allergy, Asthma and Rheumatology, Department of pediatrics, Chung Shan Medical University Hospital
| | - Ko-Huang Lue
- School of Medicine, Chung Shan Medical University
- University President, Chung Shan Medical University, Taichung, Taiwan
| | - Hai-Lun Sun
- School of Medicine, Chung Shan Medical University
- Division of Allergy, Asthma and Rheumatology, Department of pediatrics, Chung Shan Medical University Hospital
| | - Min-Sho Ku
- School of Medicine, Chung Shan Medical University
- Division of Allergy, Asthma and Rheumatology, Department of pediatrics, Chung Shan Medical University Hospital
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Yonts AB, Kronman MP, Hamdy RF. The Burden and Impact of Antibiotic Prescribing in Ambulatory Pediatrics. Curr Probl Pediatr Adolesc Health Care 2018; 48:272-288. [PMID: 30337150 DOI: 10.1016/j.cppeds.2018.09.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Antibiotics are one of the most commonly prescribed classes of medication for children and adolescents. While they are arguably the most powerful tool we possess against bacterial infections, they are frequently given to children whose illnesses are due to viruses or other non-infectious etiologies. When antibiotics are not used judiciously, the consequences can be serious and accumulate over time. This review article quantifies the burden of antimicrobial use in the pediatric outpatient setting in the United States, reviews recommended first line antibiotic regimens for common outpatient pediatric and adolescent conditions, investigates the reasons for inappropriate prescribing of antibiotics in outpatient healthcare settings, and explores the range of consequences of overuse and inappropriate use of antibiotics, from adverse drug reactions to impact on the microbiome to rising rates of antimicrobial resistance in common ambulatory conditions.
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Affiliation(s)
- Alexandra B Yonts
- Division of Infectious Diseases, Children's National Medical Center, Washington, D.C., United States
| | - Matthew P Kronman
- Division of Pediatric Infectious Diseases, University of Washington, Seattle, WA, United States
| | - Rana F Hamdy
- Division of Infectious Diseases, Children's National Medical Center, Washington, D.C., United States; Department of Pediatrics, The George Washington University School of Medicine and Health Sciences, Washington, D.C., United States.
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Martin DD. Fever: Views in Anthroposophic Medicine and Their Scientific Validity. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2016; 2016:3642659. [PMID: 27999605 PMCID: PMC5143743 DOI: 10.1155/2016/3642659] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 10/18/2016] [Indexed: 02/06/2023]
Abstract
Objective. To conduct a scoping review to characterize how fever is viewed in anthroposophic medicine (AM) and discuss the scientific validity of these views. Methods. Systematic searches were run in Medline, Embase, CAMbase, and Google Scholar. Material from anthroposophic medical textbooks and articles was also used. Data was extracted and interpreted. Results. Most of the anthroposophic literature on this subject is in the German language. Anthroposophic physicians hold a beneficial view on fever, rarely suppress fever with antipyretics, and often use complementary means of alleviating discomfort. In AM, fever is considered to have the following potential benefits: promoting more complete recovery; preventing infection recurrences and atopic diseases; providing a unique opportunity for caregivers to provide loving care; facilitating individual development and resilience; protecting against cancer and boosting the anticancer effects of mistletoe products. These views are discussed with regard to the available scientific data. Conclusion. AM postulates that fever can be of short-term and long-term benefit in several ways; many of these opinions have become evidence-based (though still often not practiced) while others still need empirical studies to be validated, refuted, or modified.
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Affiliation(s)
- David D. Martin
- University Children's Hospital, Tübingen, Germany
- Filderklinik, Filderstadt, Germany
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9
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Eldeirawi KM, Kunzweiler C, Atek A, Persky VW. Antibiotic use in infancy and the risk of asthma in Mexican American children. J Asthma 2015; 52:707-14. [PMID: 25584659 DOI: 10.3109/02770903.2015.1004338] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
OBJECTIVE This study examined the associations of antibiotic use in infancy with lifetime doctor-diagnosed asthma and current wheeze among Mexican American children. METHODS In a population-based, cross-sectional investigation, parents of 2023 children 4-18 years of age completed a questionnaire/interview addressing respiratory conditions, antibiotic use, and covariates. RESULTS In adjusted analyses, among children without history of ear infections in infancy, children who used antibiotics ≥3 times and 1-2 times were more likely to report doctor-diagnosed asthma compared with their peers who did not use antibiotics in infancy [adjusted odds ratio (aOR) = 5.14, 95% confidence interval (CI): 2.88-9.17, and aOR = 2.15, 95% CI: 1.26-3.69, respectively, p trend < 0.0001]. The respective aORs for current wheeze were 3.67 (95% CI: 1.95-6.89) and 1.63 (95% CI: 0.91-2.95). Antibiotic use in infancy was not associated with asthma or current wheeze in children who had ear infections in infancy. In additional analyses, antibiotic use in infancy was associated with asthma in children without parental history of asthma or allergies (aOR = 2.73, 95% CI: 1.70-4.39) but not in those with parental history of asthma or allergies. Among Mexico-born participants born in rural areas, antibiotic use in infancy was associated with a seven-fold increase in risk of asthma (aOR = 7.21, 95% CI: 1.46-35.65), while the association was non-significant in Mexico-born children born in urban areas in Mexico. CONCLUSIONS Antibiotic use in infancy may increase the risk of asthma and wheezing, but these associations were limited to subgroups of children.
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Affiliation(s)
- Kamal M Eldeirawi
- a Department of Health Systems Science , College of Nursing, University of Illinois at Chicago , Chicago , IL , USA
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10
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Lee E, Kwon JW, Kim HB, Yu HS, Kang MJ, Hong K, Yang SI, Jung YH, Lee SH, Choi KY, Shin HL, Hong SA, Kim HY, Seo JH, Kim BJ, Lee SY, Song DJ, Kim WK, Jang GC, Shim JY, Hong SJ. Association Between Antibiotic Exposure, Bronchiolitis, and TLR4 (rs1927911) Polymorphisms in Childhood Asthma. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2015; 7:167-74. [PMID: 25729624 PMCID: PMC4341338 DOI: 10.4168/aair.2015.7.2.167] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 06/01/2014] [Accepted: 08/06/2014] [Indexed: 12/19/2022]
Abstract
Purpose The complex interplay between environmental and genetic factors plays an important role in the development of asthma. Several studies have yielded conflicting results regarding the 2 asthma-related risk factors: antibiotic usage during infancy and/or a history of bronchiolitis during early life and the development of asthma. In addition to these risk factors, we also explored the effects of Toll-like receptor 4 (TLR4) polymorphism on the development of childhood asthma. Methods This cross-sectional study involved 7,389 middle school students who were from 8 areas of Seoul, Korea, and completed the International Study of Asthma and Allergies in Childhood questionnaire. The TLR4 polymorphism rs1927911 was genotyped in 1,395 middle school students from two areas using the TaqMan assay. Results Bronchiolitis in the first 2 years of life, antibiotic exposure during the first year of life, and parental history of asthma were independent risk factors for the development of asthma. When combined, antibiotic use and a history of bronchiolitis increased the risk of asthma (adjusted odds ratio [aOR]: 4.64, 95% confidence interval [CI]: 3.09-6.97, P value for interaction=0.02). In subjects with CC genotype of TLR4, antibiotic exposure and a history of bronchiolitis during infancy, the risk of asthma was increased, compared to subjects without these risk factors (aOR: 5.72, 95% CI: 1.74-18.87). Conclusions Early-life antibiotic exposures and a history of bronchiolitis are risk factors for asthma in young adolescents. Polymorphisms of TLR4 modified the influence of these environmental factors. Reducing antibiotic exposure and preventing bronchiolitis during infancy may prevent the development of asthma, especially in genetically susceptible subjects.
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Affiliation(s)
- Eun Lee
- Department of Pediatrics, University of Ulsan College of Medicine, Seoul, Korea. ; Childhood Asthma Atopy Center, Research Center for Standardization of Allergic Diseases, University of Ulsan College of Medicine, Seoul, Korea
| | - Ji-Won Kwon
- Department of Pediatrics, Seoul National University Bundang Hospital, Seungnam, Korea
| | - Hyo-Bin Kim
- Department of Pediatrics, Inje University Sanggye Paik Hospital, Seoul, Korea
| | - Ho-Sung Yu
- Asan Institute for Life Science, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Mi-Jin Kang
- Asan Institute for Life Science, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | | | - Song I Yang
- Department of Pediatrics, University of Ulsan College of Medicine, Seoul, Korea. ; Childhood Asthma Atopy Center, Research Center for Standardization of Allergic Diseases, University of Ulsan College of Medicine, Seoul, Korea
| | - Young Ho Jung
- Department of Pediatrics, University of Ulsan College of Medicine, Seoul, Korea. ; Childhood Asthma Atopy Center, Research Center for Standardization of Allergic Diseases, University of Ulsan College of Medicine, Seoul, Korea
| | - Seung-Hwa Lee
- Asan Institute for Life Science, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Kil Young Choi
- Asan Institute for Life Science, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Hye Lim Shin
- Childhood Asthma Atopy Center, Research Center for Standardization of Allergic Diseases, University of Ulsan College of Medicine, Seoul, Korea
| | - Seo Ah Hong
- DASEAN Institute for Health Development, Mahidol University, Salaya, Phutthamonthon, Nakhonpathom, Thailand
| | - Hyung Young Kim
- Department of Pediatrics, Kosin University College of Medicine, Busan, Korea
| | - Ju-Hee Seo
- Department of Pediatrics, Korea. Cancer Center Hospital, Seoul, Korea
| | - Byoung-Ju Kim
- Department of Pediatrics, Inje University Haeundae Paik Hospital, Busan, Korea
| | - So Yeon Lee
- Department of Pediatrics, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Dae Jin Song
- Department of Pediatrics, Korea University Guro Hospital, Seoul, Korea
| | - Woo-Kyung Kim
- Department of Pediatrics, Inje University Seoul Paik Hospital, Seoul, Korea
| | - Gwang Cheon Jang
- Department of Pediatrics, National Health Insurance Corporation Ilsan Hospital, Ilsan, Korea
| | - Jung Yeon Shim
- Department of Pediatrics, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Soo-Jong Hong
- Department of Pediatrics, University of Ulsan College of Medicine, Seoul, Korea. ; Childhood Asthma Atopy Center, Research Center for Standardization of Allergic Diseases, University of Ulsan College of Medicine, Seoul, Korea
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11
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Lee Y, Choi J, Park MR, Kim J, Kim WK, Park YM, Lee SY, Han MY, Chae Y, Ham MI, Lee KJ, Kwon HJ, Ahn K. Analysis of regional prevalence of allergic diseases in Korean school children. ALLERGY ASTHMA & RESPIRATORY DISEASE 2015. [DOI: 10.4168/aard.2015.3.1.62] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Yeonhee Lee
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jaehee Choi
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
- Environmental Health Center for Atopic Diseases, Samsung Medical Center, Seoul, Korea
| | - Mi-Ran Park
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
- Environmental Health Center for Atopic Diseases, Samsung Medical Center, Seoul, Korea
| | - Jihyun Kim
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
- Environmental Health Center for Atopic Diseases, Samsung Medical Center, Seoul, Korea
| | - Woo Kyung Kim
- Department of Pediatrics, Inje University Seoul Paik Hospital, Inje University College of Medicine, Seoul, Korea
| | - Yong Mean Park
- Department of Pediatrics, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| | - So-Yeon Lee
- Department of Pediatrics, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea
| | - Man Young Han
- Department of Pediatrics, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea
| | - Yoomi Chae
- Department of Occupational and Environmental Medicine, Dankook University College of Medicine, Cheonan, Korea
| | - Myung-Il Ham
- Department of Health Administration and Management, College of Medical Science, Soonchunhyang University, Asan, Korea
| | - Kee-Jae Lee
- Department of Information and Statistics, Korea National Open University, Seoul, Korea
| | - Ho-Jang Kwon
- Department of Preventive Medicine, Dankook University College of Medicine, Cheonan, Korea
| | - Kangmo Ahn
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
- Environmental Health Center for Atopic Diseases, Samsung Medical Center, Seoul, Korea
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12
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Podjasek JC, Jung JA, Kita H, Park MA, Juhn YJ. The FACT score in predicting pneumococcal antibody levels in asthmatics. J Asthma 2014; 52:370-5. [PMID: 25329680 DOI: 10.3109/02770903.2014.974815] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
BACKGROUND There is no measure currently available to identify asthmatics with potential immune incompetence. OBJECTIVE We propose use of a novel scoring system called the FACT score, which is formulated based on four parameters: (1) Family history of asthma, (2) Atopic conditions, (3) Bacterial colonization and (4) Th1 versus Th2 immune profile. METHODS This was a cross-sectional study involving 16 asthmatics and 14 non-asthmatics. The first two parameters of the FACT score were obtained via a chart review and interview. For the third parameter, nasopharyngeal swab samples were cultured. The ratio of interleukin-5 to interferon-gamma for each patient was measured by peripheral blood mononuclear cells cultured with house dust mite. Antibodies to 23 pneumococcal antigens were used for humoral immunity. RESULTS The FACT scores for asthmatics (mean ± SD: 5.2 ± 1.87) were higher than those for non-asthmatics (mean ± SD: 3.3 ± 1.5) (p = 0.008). Of the 16 asthmatics, 7 (44%) had 12 or more positive serotype-specific polysaccharide antibodies, whereas 12 of 14 (86%) of non-asthmatics subjects had 12 or more positive serotype-specific polysaccharide antibodies (p = 0.014). Overall, the FACT score was inversely correlated with the number of positive serotype-specific antibody levels [rho (ρ) = -0.38, p = 0.04]. The proportions of subjects with 12 or more positive serotype-specific antibodies among non-asthmatics and asthmatics below and above the median of the FACT scores were 86, 50 and 38%, respectively (p = 0.052). CONCLUSIONS The FACT score may help us identify a subset of asthmatics with immune incompetence. Study findings need to be replicated in a larger study.
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Affiliation(s)
- Jenna C Podjasek
- Division of Allergic Diseases, Mayo Clinic , Rochester, MN , USA
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13
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Early life exposure to antibiotics and the risk of childhood allergic diseases: an update from the perspective of the hygiene hypothesis. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2013; 46:320-9. [PMID: 23751771 DOI: 10.1016/j.jmii.2013.04.005] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Revised: 03/08/2013] [Accepted: 04/16/2013] [Indexed: 12/31/2022]
Abstract
The prevalence of allergic diseases has been growing rapidly in industrial countries during recent decades. It is postulated that growing up with less microbial exposure may render the immune system susceptible to a T helper type 2 (Th2)-predominant allergic response-also known as the hygiene hypothesis. This review delineates recent epidemiological and experimental evidence for the hygiene hypothesis, and integrates this hypothesis into the association between early life exposure to antibiotics and the development of allergic diseases and asthma. Several retrospective or prospective epidemiological studies reveal that early exposure to antibiotics may be positively associated with the development of allergic diseases and asthma. However, the conclusion is inconsistent. Experimental studies show that antibiotics may induce the Th2-skewed response by suppressing the T helper type 1 (Th1) response through inhibition of Th1 cytokines and disruption of the natural course of infection, or by disturbing the microflora of the gastrointestinal (GI) tract and therefore jeopardizing the establishment of oral tolerance and regulatory T cell immune responses. The hygiene hypothesis may not be the only explanation for the rapid increase in the prevalence of allergic diseases and asthma. Further epidemiological and experimental studies addressing the issue of the impact of environmental factors on the development of allergic diseases and the underlying mechanisms may unveil novel strategies for the prevention and treatment of allergic diseases in the future.
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14
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Heintze K, Petersen KU. The case of drug causation of childhood asthma: antibiotics and paracetamol. Eur J Clin Pharmacol 2013; 69:1197-209. [PMID: 23292157 PMCID: PMC3651816 DOI: 10.1007/s00228-012-1463-7] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2012] [Accepted: 11/27/2012] [Indexed: 12/15/2022]
Abstract
AIM The rising prevalence of bronchial asthma has led to world-wide efforts to understand and stem this development. Cross-sectional studies appear to show that early childhood use of antibiotics may be an important contributory factor, with paracetamol as an additional suspected cause. However, mounting evidence, which is reviewed here, points to various confounding factors as the major reasons for these reported associations. METHODS PubMed and EMBASE were systematically searched for studies on associations between antibiotics and/or paracetamol with asthma and/or wheezing, published up to November 2012. A total of 64 pertinent studies were identified, 35 focusing on antibiotics, 19 on paracetamol, and ten addressing both antibiotics and paracetamol, bringing the number of relevant datasets to 74. RESULTS Numerous studies were cross-sectional and made no adjustment for the indication of antibiotics or paracetamol; consequently, they were unable to dismiss possible confounding by indication. Where such adjustments could be performed (mostly in longitudinal studies), they substantially weakened or entirely eliminated the association with asthma or asthma surrogates present in the unadjusted data. CONCLUSION The weight of evidence of the collected studies in our review strongly suggests that the association of antibiotics with childhood asthma reflects various forms of bias, the most prominent of which is confounding by indication. Recent studies and meta-analyses support the same conclusion for paracetamol. Truly indicated antibiotics should not be withheld from infants or young children for fears they might develop asthma. Likewise, there is no sound reason to replace paracetamol as the preferred pain relief and fever medication in this age group.
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Affiliation(s)
| | - Karl-Uwe Petersen
- Institute of Pharmacology and Toxicology, RWTH Aachen University, 52072 Aachen, Germany
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15
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James KM, Peebles RS, Hartert TV. Response to infections in patients with asthma and atopic disease: an epiphenomenon or reflection of host susceptibility? J Allergy Clin Immunol 2012; 130:343-51. [PMID: 22846746 PMCID: PMC3410318 DOI: 10.1016/j.jaci.2012.05.056] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Revised: 05/12/2012] [Accepted: 05/15/2012] [Indexed: 01/22/2023]
Abstract
Associations between respiratory tract infections and asthma inception and exacerbations are well established. Infant respiratory syncytial virus and rhinovirus infections are known to be associated with an increased risk of asthma development, and among children with prevalent asthma, 85% of asthma exacerbations are associated with viral infections. However, the exact nature of this relationship remains unclear. Is the increase in severity of infections an epiphenomenon, meaning respiratory tract infections just appear to be more severe in patients with underlying respiratory disease, or instead a reflection of altered host susceptibility among persons with asthma and atopic disease? The main focus of this review is to summarize the available levels of evidence supporting or refuting the notion that patients with asthma or atopic disease have an altered susceptibility to selected pathogens, as well as discussing the biological mechanism or mechanisms that might explain such associations. Finally, we will outline areas in need of further research because understanding the relationships between infections and asthma has important implications for asthma prevention and treatment, including potential new pathways that might target the host immune response to select pathogens.
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Affiliation(s)
- Kristina M James
- Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN 37232-8300, USA
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16
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Murk W, Risnes KR, Bracken MB. Prenatal or early-life exposure to antibiotics and risk of childhood asthma: a systematic review. Pediatrics 2011; 127:1125-38. [PMID: 21606151 DOI: 10.1542/peds.2010-2092] [Citation(s) in RCA: 197] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
CONTEXT The increasing prevalence of childhood asthma has been associated with low microbial exposure as described by the hygiene hypothesis. OBJECTIVE We sought to evaluate the evidence of association between antibiotic exposure during pregnancy or in the first year of life and risk of childhood asthma. METHODS PubMed was systematically searched for studies published between 1950 and July 1, 2010. Those that assessed associations between antibiotic exposure during pregnancy or in the first year of life and asthma at ages 0 to 18 years (for pregnancy exposures) or ages 3 to 18 years (for first-year-of-life exposures) were included. Validity was assessed according to study design, age at asthma diagnosis, adjustment for respiratory infections, and consultation rates. RESULTS For exposure in the first year of life, the pooled odds ratio (OR) for all studies (N = 20) was 1.52 (95% confidence interval [CI]: 1.30-1.77). Retrospective studies had the highest pooled risk estimate for asthma (OR: 2.04 [95% CI: 1.83-2.27]; n = 8) compared with database and prospective studies (OR: 1.25 [95% CI: 1.08-1.45]; n = 12). Risk estimates for studies that adjusted for respiratory infections (pooled OR: 1.16 [95% CI: 1.08-1.25]; n = 5) or later asthma onset (pooled OR for asthma at or after 2 years: OR: 1.16 [95% CI: 1.06-1.25]; n = 3) were weaker but remained significant. For exposure during pregnancy (n = 3 studies), the pooled OR was 1.24 (95% CI: 1.02-1.50). CONCLUSIONS Antibiotics seem to slightly increase the risk of childhood asthma. Reverse causality and protopathic bias seem to be possible confounders for this relationship.
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Affiliation(s)
- William Murk
- Center for Perinatal, Pediatric and Environmental Epidemiology, Yale University School of Public Health, New Haven, CT 06510-3210, USA
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17
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Risnes KR, Belanger K, Murk W, Bracken MB. Antibiotic exposure by 6 months and asthma and allergy at 6 years: Findings in a cohort of 1,401 US children. Am J Epidemiol 2011; 173:310-8. [PMID: 21190986 DOI: 10.1093/aje/kwq400] [Citation(s) in RCA: 196] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Many studies have reported that antibiotic use may be associated with increased risk of childhood asthma. Respiratory tract infections in small children may be difficult to distinguish from early symptoms of asthma, and studies may have been confounded by "protopathic" bias, where antibiotics are used to treat early symptoms of asthma. These analyses of a cohort including 1,401 US children assess the association between antibiotic use within the first 6 months of life and asthma and allergy at 6 years of age between 2003 and 2007. Antibiotic exposure was associated with increased risk of asthma (adjusted odds ratio = 1.52, 95% confidence interval (CI): 1.07, 2.16). The odds ratio if asthma was first diagnosed after 3 years of age was 1.66 (95% CI: 0.99, 2.79) and, in children with no history of lower respiratory infection in the first year of life, the odds ratio was 1.66 (95% CI: 1.12, 3.46). The adverse effect of antibiotics was particularly strong in children with no family history of asthma (odds ratio = 1.89, 95% CI: 1.00, 3.58) (P(interaction) = 0.03). The odds ratio for a positive allergy blood or skin test was 1.59 (95% CI: 1.10, 2.28). The results show that early antibiotic use was associated with asthma and allergy at 6 years of age, and that protopathic bias was unlikely to account for the main findings.
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Affiliation(s)
- Kari R Risnes
- Center for Perinatal, Pediatric, and Environmental Epidemiology, Yale University Schools of Public Health and Medicine, New Haven, Connecticut, USA
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18
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Kwon JW, Kim BJ, Song Y, Seo JH, Kim TH, Yu J, Kim HB, Lee SY, Kim WK, Kim KW, Ji HM, Kim KE, Kim H, Hong SJ. Changes in the prevalence of childhood asthma in seoul from 1995 to 2008 and its risk factors. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2010; 3:27-33. [PMID: 21217922 PMCID: PMC3005315 DOI: 10.4168/aair.2011.3.1.27] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2010] [Accepted: 08/31/2010] [Indexed: 11/20/2022]
Abstract
Purpose To investigate the prevalence of asthma and determine its risk factors in elementary school students in Seoul. Methods A modified International Study of Asthma and Allergies in Childhood (ISAAC) questionnaire was used to survey 4,731 elementary school students from five areas in Seoul between April and October, 2008. Results In elementary school children, the lifetime and recent 12-month prevalence of wheezing were 11.7% and 5.6%, respectively. The lifetime prevalence of asthma diagnosis was 7.9%, and the recent 12-month prevalence of asthma treatment was 2.7%. Male sex (adjusted odds ratio [aOR], 1.90; 95% confidence interval [CI], 1.36-2.66), history of atopic dermatitis (AD) (aOR, 2.76; 95% CI, 1.98-3.84), history of allergic rhinitis (AR) (aOR, 3.71; 95% CI, 2.61-5.26), history of bronchiolitis before 2 years of age (aOR, 2.06; 95% CI, 1.39-3.07), use of antibiotics during infancy for >3 days (aOR, 1.88; 95% CI, 1.35-2.62), parental history of asthma (aOR, 2.83; 95% CI, 1.52-5.27), exposure to household molds during infancy (aOR, 1.84; 95% CI, 1.18-2.89), and the development or aggravation of asthma symptoms within 6 months after moving to a new house (aOR, 11.76; 95% CI, 5.35-25.86) were the independent risk factors for wheezing within 12 months. Conclusions The prevalence of wheezing and asthma in elementary school students in 2008 was similar to that in the past decade. Male sex, history of AD, history of AR, history of bronchiolitis before 2 years of age, parental asthma, use of antibiotics during infancy, exposure to molds in the house during infancy, and development or aggravation of asthma symptoms within 6 months after moving to a new house, could be risk factors for wheezing within 12 months.
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Affiliation(s)
- Ji-Won Kwon
- Department of Pediatrics, Childhood Asthma Atopy Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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19
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Lee SI. Prevalence of childhood asthma in Korea: international study of asthma and allergies in childhood. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2010; 2:61-4. [PMID: 20358019 PMCID: PMC2846742 DOI: 10.4168/aair.2010.2.2.61] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2010] [Accepted: 02/27/2010] [Indexed: 12/04/2022]
Abstract
Childhood asthma is a major concern because it leads to more hospital visits and a heavy economic burden. Proper management and prevention strategies for childhood asthma must be based on correct evaluation of prevalence and risk factors for its development. In Korea, nationwide studies were conducted in 1995 and 2000 on students from 68 elementary schools (age, 6-12 years) and junior high schools (age, 12-15 years) by the Korean Academy of Pediatric Allergy and Respiratory Diseases. We used the Korean version of the International Study of Asthma and Allergies in Childhood (ISAAC) written and video questionnaires at the same schools during the same period (October-November). The prevalence of asthma in junior high school children seemed to increase over 5 years. However, in elementary school children, the prevalence of asthma symptoms decreased, although the prevalence of 'diagnosis of asthma, ever' and 'treatment of asthma, last 12 months' increased. In addition, it was found that various factors, such as obesity, passive smoking, dietary habits, raising pets at home, and fever/antibiotic use during infancy were associated with childhood asthma. When prevalence of asthma in Korea was compared with that in different regions, the prevalence changes in the 6-7 years age group did not seem to be consistent between regions, whereas similar trends were observed among children aged 13-14 years. To conduct another epidemiological study to evaluate the time trend over time, a third nationwide survey is planned in 2010, and we anticipate ISAAC Phase 3 will explore recent changes in the prevalence of childhood asthma and assess its risk factors in Korean children. On the basis of accurate data on the current status of childhood asthma in 2010, we will be able to establish proper management strategies.
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Affiliation(s)
- Sang-Il Lee
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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20
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The "Microflora Hypothesis" of allergic disease. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2009; 635:113-34. [PMID: 18841708 DOI: 10.1007/978-0-387-09550-9_10] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Predisposition to allergic disease is a complex function of an individual's genetic background and, as is the case with multi-gene traits, environmental factors have important phenotypic consequences. Over a span of decades, a dramatic increase in the prevalence of allergic disease in westernized populations suggests the occurrence of critical changes in environmental pressures. Recently, it has been shown that the microbiota (i.e. microflora) of allergic individuals differs from that of non-allergic ones and that differences are detectable prior to the onset of atopy, consistent with a possible causative role. Features of the westernized lifestyle that are known to alter the microbiota, such as antibiotics and diet, are also associated with allergy in humans. In this chapter, we discuss the "Microflora Hypothesis" for allergy which predicts that an "unhealthy" microbiota composition, now commonly found within westernized communities, contributes to the development of allergy and conversely, that restoring a "healthy" microbiota, perhaps through probiotic supplementation, may prevent the development of allergy or even treat existing disease. In testing this hypothesis, our laboratory has recently reported that mice can develop allergic airway responses if their microbiota is altered at the time of first allergen exposure.
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21
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McFadden JP, White JML, Basketter DA, Kimber I. Does hapten exposure predispose to atopic disease? The hapten-atopy hypothesis. Trends Immunol 2009; 30:67-74. [PMID: 19138566 DOI: 10.1016/j.it.2008.11.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2008] [Revised: 11/16/2008] [Accepted: 11/21/2008] [Indexed: 12/15/2022]
Abstract
Contact allergy data indicates that atopics have heightened oral tolerance to haptens (chemical allergens). We speculate here, that artificially increased oral exposure to chemicals compete with dietary proteins for the development of oral tolerance, predisposing to the acquisition of food protein allergy and representing one driver for the increasing prevalence of protein allergy and/or atopy. Hapten exposure via other surfaces such as the skin and airways might also be important in promoting atopic disease. Consistent with this hypothesis it is notable that over 40 years, with the huge increase in atopic disease, there has also been an increase in dietary hapten exposure through processed food, formula milk and oral antibiotic and drug use.
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Affiliation(s)
- J P McFadden
- Department of Cutaneous Allergy, St John's Institute of Dermatology, St. Thomas' Hospital, London SE1 7EH, UK.
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22
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Jordan S, Storey M, Morgan G. Antibiotics and allergic disorders in childhood. Open Nurs J 2008; 2:48-57. [PMID: 19319220 PMCID: PMC2582823 DOI: 10.2174/1874434600802010048] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2008] [Revised: 05/02/2008] [Accepted: 05/05/2008] [Indexed: 12/28/2022] Open
Abstract
AIM This paper explores the possible association between antibiotics prescribed in infancy and allergic disorders, mainly eczema and asthma, in childhood. BACKGROUND No-one fully understands why childhood asthma and eczema have become so common. Some authorities suggest that there may be an association between eczema and asthma and antibiotics prescribed in childhood; however, others disagree. METHOD/EVALUATION: The available literature was reviewed to examine the links between prescribed antibiotics and childhood eczema and asthma. FINDINGS/KEY ISSUE: Some, but not all, research indicates that antibiotic administration in pregnancy, childbirth or infancy may be linked to childhood asthma and eczema, but much uncertainty remains. None of the papers identified stated the doses of antibiotics prescribed. In addition, we were unable to locate studies reporting the interactions between antibiotics and the developing immune system. CONCLUSION Health care professionals should be selective when prescribing antibiotics. Further prospective work is needed to guide the prescribing of antibiotics in childbirth and infancy.
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Affiliation(s)
- Sue Jordan
- School of Health Science, Swansea University, Swansea, SA2 8PP, UK
| | - Mel Storey
- School of Medicine, Swansea University, Swansea, SA2 8PP, UK
| | - Gareth Morgan
- School of Medicine, Swansea University, Swansea, SA2 8PP, UK
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23
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Hong SJ, Ahn KM, Lee SY, Kim KE. The prevalences of asthma and allergic diseases in Korean children. KOREAN JOURNAL OF PEDIATRICS 2008. [DOI: 10.3345/kjp.2008.51.4.343] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Soo-Jong Hong
- Department of Pediatrics, Ulsan University College of Medicine, Seoul, Korea
| | - Kang-Mo Ahn
- Department of Pediatrics, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Soo-Young Lee
- Department of Pediatrics, Ajou University College of Medicine, Suwon, Korea
| | - Kyu-Earn Kim
- Department of Pediatrics, Yonsei University College of Medicine, Seoul, Korea
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Acute Lower Respiratory Infections. NUTRITION AND HEALTH IN DEVELOPING COUNTRIES 2008. [PMCID: PMC7122747 DOI: 10.1007/978-1-59745-464-3_7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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25
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Tanaka K, Miyake Y, Kiyohara C. Environmental factors and allergic disorders. Allergol Int 2007; 56:363-96. [PMID: 17965579 DOI: 10.2332/allergolint.r-07-143] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2007] [Indexed: 12/19/2022] Open
Abstract
Despite numerous studies on possible associations between environmental exposure and allergic disorders, any conclusions made remain a matter of controversy. We conducted a review of evidence in relation to environmental and nutritional determinants and wheeze, asthma, atopic dermatitis, and allergic rhinitis. Identified were 263 articles for analysis after consideration of 1093 papers that were published since 2000 and selected by electronic search of the PubMed database using keywords relevant to epidemiological studies. Most were cross-sectional and case-control studies. Several prospective cohort studies revealed inconsistent associations between various environmental factors and the risk of any allergic disorder. Therefore, the evidence was inadequate to infer the presence or absence of a causal relationship between various environmental exposures and allergic diseases. However, evidence is suggestive of positive associations of allergies with heredity. Because almost all the studies were performed in Western countries, the application of these findings to people in other countries, including Japan, may not be appropriate. Further epidemiological information gained from population-based prospective cohort studies, in particular among Japanese together with other Asians, is needed to assess causal relationships between various environmental factors and allergic diseases.
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Affiliation(s)
- Keiko Tanaka
- Department of Public Health, Faculty of Medicine, Fukuoka University, Fukuoka, Japan.
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26
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Endre L, Láng S, Vámos A, Bobvos J, Páldy A, Farkas I, Collinsné Horváth Z, Varró MJ. [Increase in prevalence of childhood asthma in Budapest between 1995 and 2003: correlation with air pollution data and total pollen count]. Orv Hetil 2007; 148:211-6. [PMID: 17344141 DOI: 10.1556/oh.2007.27900] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
INTRODUCTION According to the data of the Hungarian pulmonological network, the prevalence of asthma in the last 15 years has increased (almost linearly) in Hungary. In 2004 it was 1.8%. There are only a few data about the prevalence of childhood asthma. AIMS The aim of the authors was to measure the prevalence of bronchial asthma in childhood in Budapest in 1995, 1999 and 2003, using questionnaires directed to district pediatricians. METHODS There were only two questions in these questionnaires: how many children are in their districts, and how many are suffering from asthma? Besides of this survey the dust, CO, NO(2) and SO(2) concentrations in the air were measured on-line at 8 points in Budapest, while ozone level measurements were also made at 2 stations. The counts of pollen and of fungal elements in the air were calculated separately for Buda and for Pest. RESULTS In 1995, replies were received from 118 pediatricians in 11 districts, who were responsible for the supervision of 104,060 children, out of these 1.88+/-0.87% had been diagnosed as having asthma. In 1999 replies were sent by 153 physicians in 22 of the 23 districts, who had a total of 142,679 children under their care. These included 3228 asthmatics, i.e. a prevalence of 2.26+/-0.95%. In 2003 the authors received answers from all of the 23 districts of Budapest. The 204 pediatricians were responsible for the supervision of 176 049 children. The number of patients with the diagnosis of asthma was 4712 (corresponding for a prevalence of 2.68+/-1.3%). The increase between 1995 and 1999, and between 1999 and 2003 was highly significant (p < 0.0001). This significant increase was valid even when the authors analysed only those 11 districts, which answered already in 1995. The level of air pollution in Budapest did not deteriorate in the period in question, and the concentration of pollen grains of plants causing allergy did not increase compared to previous years. CONCLUSIONS On the basis of the results of more than 100 thousand children, the authors conclude that between 1995 and 2003 the proportion of asthmatic children increased by 50% in Budapest, while the air pollution did not deteriorate and the pollen concentration from sensitizing plants did not increase.
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Affiliation(s)
- László Endre
- Országos Egészségfejlesztési Intézet, Budapest, Hungary.
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Kim JL, Elfman L, Norbäck D. Respiratory symptoms, asthma and allergen levels in schools--comparison between Korea and Sweden. INDOOR AIR 2007; 17:122-9. [PMID: 17391234 DOI: 10.1111/j.1600-0668.2006.00460.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
UNLABELLED We studied reports on respiratory symptoms, asthma and atopic sensitisation in relation to allergen contamination in Korean schools and compared with data from a previous Swedish study performed in eight primary schools. Korean pupils (n = 2365) in 12 primary schools first completed a questionnaire. Then airborne and settled dust were collected from 34 classrooms and analyzed for allergens by ELISA. In both countries, boys reported more symptoms. The prevalence of wheeze was similar, while daytime [odds ratio (OR) = 14.0, 95% confidence interval (CI) = 9.0-21.9] and nocturnal breathlessness (OR = 3.1, 95% CI = 1.5-6.4) were much higher among Korean students. In Korean schools, dog allergen (Can f 1) was the most common followed by mite allergen (Der f 1), while cat (Fel d 1), dog, and horse allergen (Equ cx) were abundant in Sweden. Moreover, CO(2) levels were high in most Korean schools (range 907-4113 ppm). There was an association between allergen levels in dust and air samples, and number of pet-keepers in the classrooms. In conclusion, allergen contamination in Korean schools may be an important public issue. PRACTICAL IMPLICATIONS This study showed that furry pet allergen contamination was common in both Korean and Swedish schools. In addition, house dust-mite (Der f 1) allergen contamination was common in Korean schools, probably because of transport of allergen from other environments. Transfer should therefore be minimized. Korean schools had high CO(2) levels and the concept of mechanical ventilation should be introduced. Measurement of airborne allergen levels is quite new and seems to be a more convenient and correct way to monitor allergen exposure in classrooms.
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Affiliation(s)
- J L Kim
- Department of Medical Sciences, Occupational and Environmental Medicine, Uppsala University and University Hospital, Uppsala, Sweden.
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Kazimierczak KA, Scott KP. Antibiotics and Resistance Genes: Influencing the Microbial Ecosystem in the Gut. ADVANCES IN APPLIED MICROBIOLOGY 2007; 62:269-92. [PMID: 17869608 DOI: 10.1016/s0065-2164(07)62009-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Katarzyna A Kazimierczak
- Microbial Ecology, Gut Health Division, Rowett Research Institute, Bucksburn, Aberdeen AB21 9SB, Scotland, United Kingdom
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Bibliography. Current world literature. Outcome measures. Curr Opin Allergy Clin Immunol 2006; 6:241-4. [PMID: 16670521 DOI: 10.1097/01.all.0000225167.72842.fd] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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