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Chu DK, Koplin JJ, Ahmed T, Islam N, Chang CL, Lowe AJ. How to Prevent Atopic Dermatitis (Eczema) in 2024: Theory and Evidence. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY. IN PRACTICE 2024; 12:1695-1704. [PMID: 38703820 DOI: 10.1016/j.jaip.2024.04.048] [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: 01/17/2024] [Revised: 04/21/2024] [Accepted: 04/24/2024] [Indexed: 05/06/2024]
Abstract
Atopic dermatitis (AD) or eczema is a chronic inflammatory skin disease characterized by dry, itchy, and inflamed skin. We review emerging concepts and clinical evidence addressing the pathogenesis and prevention of AD. We examine several interventions ranging from skin barrier enhancement strategies to probiotics, prebiotics, and synbiotics; and conversely, from antimicrobial exposure to vitamin D and omega fatty acid supplementation; breastfeeding and hydrolyzed formula; and house dust mite avoidance and immunotherapy. We appraise the available evidence base within the context of the Grades of Recommendation, Assessment, Development, and Evaluation approach. We also contextualize our findings in relation to concepts relating AD and individual-patient allergic life trajectories versus a linear concept of the atopic march and provide insights into future knowledge gaps and clinical trial design considerations that must be addressed in forthcoming research. Finally, we provide implementation considerations to detect population-level differences in AD risk. Major international efforts are required to provide definitive evidence regarding what works and what does not for preventing AD.
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Affiliation(s)
- Derek K Chu
- Evidence in Allergy Group, Department Medicine and Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada.
| | - Jennifer J Koplin
- Child Health Research Centre, University of Queensland, Brisbane, Queensland, Australia; Centre for Food Allergy Research, Murdoch Children's Research Institute, Melbourne, Victoria, Australia
| | - Tasnuva Ahmed
- Evidence in Allergy Group, Department Medicine and Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
| | - Nazmul Islam
- Evidence in Allergy Group, Department Medicine and Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
| | - Chia-Lun Chang
- Centre for Food Allergy Research, Murdoch Children's Research Institute, Melbourne, Victoria, Australia; Allergy and Lung Health Unit, Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, Victoria, Australia
| | - Adrian J Lowe
- Centre for Food Allergy Research, Murdoch Children's Research Institute, Melbourne, Victoria, Australia; Allergy and Lung Health Unit, Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, Victoria, Australia
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2
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Harama D, Saito-Abe M, Hamaguchi S, Fukuie T, Ohya Y, Yamamoto-Hanada K. Feasibility and Safety of the Early Introduction of Allergenic Foods in Asian Infants with Eczema. Nutrients 2024; 16:1578. [PMID: 38892510 PMCID: PMC11174384 DOI: 10.3390/nu16111578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 05/15/2024] [Accepted: 05/21/2024] [Indexed: 06/21/2024] Open
Abstract
BACKGROUND There is a lack of data regarding the early introduction of the consumption of allergenic food among Asian infants. METHODS We examined infants who had early-onset eczema before 6 months of age and received instructions from certified allergists for the early introduction of hen's eggs, milk, wheat, peanuts, and tree nuts. RESULTS The consumption rates of hen's eggs were 100% at 24 months. For peanuts and walnuts, the consumption rate was moderate at 12 months (48.5% and 30.3%, respectively), but by 24 months, it had progressed to 78.8% and 81.3%, respectively. In contrast, cashews remained at lower levels than other allergens at 20.7% at 12 months and 41.4% at 24 months. No adverse events related to early introductions occurred. CONCLUSIONS In infants with eczema, allergenic foods could be introduced early and well tolerated in Asian infants. However, having eczema may indicate a predisposition to food allergies, so caution is necessary when introducing allergenic foods. The early introduction of peanuts and tree nuts was still more challenging in real-world practice in Asia as well as in Western countries.
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Affiliation(s)
- Daisuke Harama
- Allergy Center, National Center for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo 157-8535, Japan; (D.H.); (M.S.-A.); (S.H.); (T.F.); (Y.O.)
| | - Mayako Saito-Abe
- Allergy Center, National Center for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo 157-8535, Japan; (D.H.); (M.S.-A.); (S.H.); (T.F.); (Y.O.)
- Medical Support Center for the Japan Environment and Children’s Study, National Research Institute for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo 157-8535, Japan
| | - Sayaka Hamaguchi
- Allergy Center, National Center for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo 157-8535, Japan; (D.H.); (M.S.-A.); (S.H.); (T.F.); (Y.O.)
- Department of Pediatrics, Tokyo Metropolitan Hiroo Hospital, 2-34-10 Ebisu, Shibuya-ku, Tokyo 150-0013, Japan
| | - Tatsuki Fukuie
- Allergy Center, National Center for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo 157-8535, Japan; (D.H.); (M.S.-A.); (S.H.); (T.F.); (Y.O.)
| | - Yukihiro Ohya
- Allergy Center, National Center for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo 157-8535, Japan; (D.H.); (M.S.-A.); (S.H.); (T.F.); (Y.O.)
- Medical Support Center for the Japan Environment and Children’s Study, National Research Institute for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo 157-8535, Japan
| | - Kiwako Yamamoto-Hanada
- Allergy Center, National Center for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo 157-8535, Japan; (D.H.); (M.S.-A.); (S.H.); (T.F.); (Y.O.)
- Medical Support Center for the Japan Environment and Children’s Study, National Research Institute for Child Health and Development, 2-10-1 Okura, Setagaya-ku, Tokyo 157-8535, Japan
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Kuper P, Hasenpusch C, Proebstl S, Matterne U, Hornung CJ, Grätsch E, Li M, Sprenger AA, Pieper D, Koplin JJ, Perkin MR, Genuneit J, Apfelbacher C. Timing of complementary feeding for early childhood allergy prevention: An overview of systematic reviews. Clin Exp Allergy 2023; 53:1243-1255. [PMID: 37779264 DOI: 10.1111/cea.14399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 08/16/2023] [Accepted: 09/08/2023] [Indexed: 10/03/2023]
Abstract
OBJECTIVE To summarise and critically appraise systematic review (SR) evidence on the effects of timing of complementary feeding (CF) on the occurrence of allergic sensitisation and disease. DESIGN Overview of SRs. AMSTAR-2 and ROBIS were used to assess methodological quality and risk of bias (RoB) of SRs. RoB 2 Tool was used to assess RoB of primary randomised controlled trials (RCTs) (or extracted). The certainty of evidence (CoE) was assessed using GRADE. Findings were synthesised narratively. DATA SOURCES MEDLINE (via PubMed and Ovid), the Cochrane Library and Web of Science Core Collection (2010 to 27 February 2023). ELIGIBILITY CRITERIA SRs investigating the effects of timing of CF in infants or young children (0-3 years) on risk of developing food allergy (FA), allergic sensitisation, asthma, allergic rhinitis, atopic eczema and adverse events based on RCT evidence. RESULTS Eleven SRs were included. Only two SRs had low RoB; common issues were failure to report on funding of primary studies and failure to provide a list of excluded trials. Common limitations of included trials were lack of blinding of outcome assessment or detailed trial preregistration, and inadequate handling of high loss to follow up. Primary study overlap was very high for specific FA and slight to moderate for FA in general and other primary outcomes. Introducing specific foods (peanut, cooked egg) early probably reduces the risk of specific FA. Evidence for other allergic outcomes was mostly very uncertain and based on few primary studies. Trials varied regarding timing of CF, nature of complementary foods and population risk, which limited comparability between SRs. CONCLUSIONS For developing guidelines to support decision-making on the timing of CF as a preventive strategy, early introduction of specific foods (i.e. egg and peanut) seems promising and safe, whereas more extensive research is required regarding other allergic outcomes and potential adverse events.
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Affiliation(s)
- Paula Kuper
- Institute of Social Medicine and Health Systems Research, Medical Faculty, Otto von Guericke University, Magdeburg, Germany
| | - Claudia Hasenpusch
- Institute of Social Medicine and Health Systems Research, Medical Faculty, Otto von Guericke University, Magdeburg, Germany
| | - Simone Proebstl
- Institute of Social Medicine and Health Systems Research, Medical Faculty, Otto von Guericke University, Magdeburg, Germany
| | - Uwe Matterne
- Institute of Social Medicine and Health Systems Research, Medical Faculty, Otto von Guericke University, Magdeburg, Germany
| | - Catherine J Hornung
- Murdoch Children's Research Institute, Parkville, Victoria, Australia
- Centre for Food & Allergy Research, Parkville, Victoria, Australia
| | - Esther Grätsch
- Institute of Social Medicine and Health Systems Research, Medical Faculty, Otto von Guericke University, Magdeburg, Germany
| | - Mengtong Li
- Institute of Social Medicine and Health Systems Research, Medical Faculty, Otto von Guericke University, Magdeburg, Germany
| | - Antonia A Sprenger
- Institute of Social Medicine and Health Systems Research, Medical Faculty, Otto von Guericke University, Magdeburg, Germany
| | - Dawid Pieper
- Faculty of Health Sciences Brandenburg, Brandenburg Medical School Theodor Fontane, Institute for Health Services and Health System Research, Rüdersdorf, Germany
- Center for Health Services Research, Brandenburg Medical School Theodor Fontane, Rüdersdorf, Germany
| | - Jennifer J Koplin
- Centre for Food & Allergy Research, Parkville, Victoria, Australia
- Child Health Research Centre, The University of Queensland, Brisbane, Queensland, Australia
| | - Michael R Perkin
- Population Health Research Institute, St. George's University London, London, UK
| | - Jon Genuneit
- Pediatric Epidemiology, Department of Pediatrics, Medical Faculty, Leipzig University, Leipzig, Germany
| | - Christian Apfelbacher
- Institute of Social Medicine and Health Systems Research, Medical Faculty, Otto von Guericke University, Magdeburg, Germany
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Kayode OA, Mokoatle CM, Rathebe PC, Mbonane TP. Factors Associated with Atopic Dermatitis among Children Aged 6 to 14 Years in Alimosho Local Government, Lagos, Nigeria. CHILDREN (BASEL, SWITZERLAND) 2023; 10:children10050893. [PMID: 37238441 DOI: 10.3390/children10050893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 05/09/2023] [Accepted: 05/15/2023] [Indexed: 05/28/2023]
Abstract
There has been a rise in the prevalence of atopic dermatitis (AD) globally, especially in low-and middle-income countries such as Nigeria. The condition has been linked to genetic predisposes, living conditions, and environmental factors. Environmental factors are considered a significant contributor to AD in low- and middle-income countries. This study determined the prevalence of AD in south-western Nigeria and identified risk factors in home and school environments that children aged 6 to 14 years are exposed to. A cross-sectional study was adopted, and the total sample size was 349. Four randomly selected health facilities were used for the study. A questionnaire was used to determine the risk factors in the population. Data analysis was performed using the latest version of Statistical Package for Social Science (SPSS). The prevalence of atopic dermatitis in this study is 25%. Atopic dermatitis was found to be common in females (27%). According to the univariate analysis, children who lived where trucks pass on the street almost daily had the highest cases of atopic dermatitis (28%). Children with rugs in their houses (26%) and those whose houses are surrounded by bushes (26%) had higher cases of atopic dermatitis. Children who played on school grass (26%), attended creche with rubber toys (28%), and attended school where wooden chairs (28%) and chalkboards (27%) are used had a higher number of AD. Bivariate analysis showed an association between AD with a mother's monthly income (p = 0.012) and eating potatoes (p = 0.005), fruits (p = 0.040), and cereal (p = 0.057). In the multivariate analysis, the consumption of fruits (p = 0.02), potatoes (p < 0.001), and cereal (p = 0.04) were identified as risk factors associated with AD. It is envisaged that the study will serve as a basis for possible research on evidence-based and primary prevention options. Hence, we recommend health education activities to empower communities to protect themselves against environmental risk factors that are preventable.
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Affiliation(s)
- Olubunmi A Kayode
- Department of Environmental Health, Faculty of Health Sciences, University of Johannesburg, Johannesburg 2000, South Africa
| | - Charlotte M Mokoatle
- Department of Environmental Health, Faculty of Health Sciences, University of Johannesburg, Johannesburg 2000, South Africa
| | - Phoka C Rathebe
- Department of Environmental Health, Faculty of Health Sciences, University of Johannesburg, Johannesburg 2000, South Africa
| | - Thokozani P Mbonane
- Department of Environmental Health, Faculty of Health Sciences, University of Johannesburg, Johannesburg 2000, South Africa
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Matterne U, Theurich MA, Pröbstl S, Pieper D, Wang J, Xu A, Apfelbacher C. Quality of systematic reviews on timing of complementary feeding for early childhood allergy prevention. BMC Med Res Methodol 2023; 23:80. [PMID: 37016313 PMCID: PMC10071735 DOI: 10.1186/s12874-023-01899-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 03/21/2023] [Indexed: 04/06/2023] Open
Abstract
BACKGROUND Only rigorously prepared analyses can provide the highest level of evidence to inform decision-making. Several recent systematic reviews (SRs) examined the hypothesis that the early introduction of specific allergenic complementary foods (CFs) to infants may lead to a lower incidence of one or more allergic outcomes. However, the methodological rigour and quality of reporting of SRs in this area has not yet been systematically evaluated. METHODS We comprehensively searched PubMed, Medline (Ovid), and Web of Science Core Collection on 13th January 2022, using a pre-specified and tested search syntax for SRs with RCT evidence on the early introduction of allergenic CFs as a means for allergy prevention in infants and children. We examined the quality and risk of bias (RoB) using AMSTAR-2 and ROBIS tools, examined adherence to the Preferred Reporting Items for SRs and Meta-Analyses (PRISMA), and checked whether certainty of the evidence was assessed. RESULTS Twelve SRs were included. Application of both tools resulted in similar overall judgements in terms of direction and extent for nine of the 12 SRs. Nine SRs were found to be of critically low to low quality according to AMSTAR-2 and to be at high RoB according to ROBIS. One SR received a moderate quality rating (AMSTAR-2) and high RoB rating (ROBIS). However, for two SRs, judgements between AMSTAR-2 and ROBIS were at stark variance. Only two SRs fully adhered to the PRISMA checklist. Six SRs evaluated the certainty of the body of RCT evidence. Several SRs failed to consider unpublished studies either by an explicit a priori exclusion or by inadequate search strategies. CONCLUSIONS Well-conducted SRs are important for decision-making and informing guideline development, the quality of their methodology should therefore be considered. The methodological rigour and the reporting quality of SRs on the timing of CF for allergy prevention must be improved. REGISTRATION https://osf.io/7cs4b .
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Affiliation(s)
- Uwe Matterne
- Institute of Social Medicine and Health Systems Research, Medical Faculty, Otto von Guericke University, Leipziger Str. 44, 39120, Magdeburg, Germany
| | - Melissa A Theurich
- Institute of Social Medicine and Health Systems Research, Medical Faculty, Otto von Guericke University, Leipziger Str. 44, 39120, Magdeburg, Germany
| | - Simone Pröbstl
- Institute of Social Medicine and Health Systems Research, Medical Faculty, Otto von Guericke University, Leipziger Str. 44, 39120, Magdeburg, Germany
| | - Dawid Pieper
- Faculty of Health Sciences Brandenburg, Brandenburg Medical School (Theodor Fontane), Institute for Health Services and Health Systems Research, Rüdersdorf, Germany
- Center for Health Services Research, Brandenburg Medical School (Theodor Fontane), Rüdersdorf, Germany
| | - Jiancong Wang
- Institute of Social Medicine and Health Systems Research, Medical Faculty, Otto von Guericke University, Leipziger Str. 44, 39120, Magdeburg, Germany
| | - Anna Xu
- University of Oxford, Oxford, UK
| | - Christian Apfelbacher
- Institute of Social Medicine and Health Systems Research, Medical Faculty, Otto von Guericke University, Leipziger Str. 44, 39120, Magdeburg, Germany.
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6
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Soriano VX, Ciciulla D, Gell G, Wang Y, Peters RL, McWilliam V, Dharmage SC, Koplin JJ. Complementary and Allergenic Food Introduction in Infants: An Umbrella Review. Pediatrics 2023; 151:190526. [PMID: 36704902 DOI: 10.1542/peds.2022-058380] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/04/2022] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND Multiple systematic reviews examine the introduction of foods in relation to individual health outcomes, but the balance of harms and benefits has not been overviewed systematically. OBJECTIVES We aimed to perform an overview of systematic reviews on age of introduction of complementary and allergenic foods to the infant diet and long and short-term health outcomes. DATA SOURCES We searched Medline, Embase, Cochrane, and PubMed (July 25, 2022). STUDY SELECTION Included systematic reviews examining the introduction of complementary or allergenic foods before age 1. Outcomes included allergic, autoimmune, and inflammatory diseases, neurodevelopment, nutrition, and weight. DATA EXTRACTION Extraction and quality assessment were performed in duplicate (A Measurement Tool to Assess Systematic Reviews) and strength of evidence was assessed. RESULTS We screened 4015 articles and included 32 systematic reviews. There was moderate evidence that peanut and egg should be introduced from 4 to 11 months to prevent food allergy (6 of 10 reviews). Complementary food introduction was not associated with food allergy. Moderate certainty evidence suggested age of complementary food introduction was not associated with eczema. Age at introduction of gluten was not associated with celiac disease (high certainty evidence; 3 of 4 reviews). Low certainty evidence indicated that introducing solids before 4 months may increase the risk of childhood obesity, but not growth. There was insufficient evidence regarding an association between any food introduction and bone health, gastrointestinal diseases, autoimmune disorders, asthma, or allergic rhinitis. LIMITATIONS Gray literature was not included. CONCLUSIONS Current evidence supports introducing complementary foods around 6 months and allergenic foods before 11 months.
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Affiliation(s)
- Victoria X Soriano
- Centre for Food and Allergy Research.,Murdoch Children's Research Institute, Parkville, Australia
| | - Daniela Ciciulla
- Centre for Food and Allergy Research.,Murdoch Children's Research Institute, Parkville, Australia.,Department of Paediatrics
| | - Grace Gell
- Murdoch Children's Research Institute, Parkville, Australia
| | - Yichao Wang
- Murdoch Children's Research Institute, Parkville, Australia.,Department of Paediatrics.,School of Psychology, Faculty of Health, Deakin University, Burwood, Australia
| | - Rachel L Peters
- Centre for Food and Allergy Research.,Murdoch Children's Research Institute, Parkville, Australia
| | - Vicki McWilliam
- Murdoch Children's Research Institute, Parkville, Australia.,Department of Paediatrics.,Department of Allergy, Royal Children's Hospital, Parkville, Australia
| | - Shyamali C Dharmage
- Centre for Food and Allergy Research.,School of Population and Global Health, University of Melbourne, Parkville, Australia
| | - Jennifer J Koplin
- Centre for Food and Allergy Research.,Murdoch Children's Research Institute, Parkville, Australia.,Department of Paediatrics
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Kakieu Djossi S, Khedr A, Neupane B, Proskuriakova E, Jada K, Mostafa JA. Food Allergy Prevention: Early Versus Late Introduction of Food Allergens in Children. Cureus 2022; 14:e21046. [PMID: 35155013 PMCID: PMC8824233 DOI: 10.7759/cureus.21046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Accepted: 01/08/2022] [Indexed: 11/10/2022] Open
Abstract
The emergence of food allergies in children is crucial for various medical fields seeking a viable strategy for allergy prevention. The most well-recognized approach adopted by numerous health care and government institutions hinges on the delay in the introduction of food allergens, which supposedly protects infants from sensitization and decreases the possibility of allergy development. However, recent experimental findings indicate that the benefits of this approach might be overestimated, as early exposure to allergenic foods has been shown to yield more advantageous outcomes. Multiple investigations on the causes of allergic diseases report that avoiding food allergies might be related to early consumption of these allergens. Alternatively, delaying the contact with allergenic nourishments, explored in contemporary research, has been proven to result in a higher prevalence of allergies among children, originating such conditions as atopic diseases and extreme sensitization to foods. The current paper compares the two prominent strategies of allergenic food introduction, gathering the most pertinent modern evidence to distinguish whether exposure to food allergens should be delayed or advanced.
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8
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Narla S, Silverberg JI. Dermatology for the internist: optimal diagnosis and management of atopic dermatitis. Ann Med 2021; 53:2165-2177. [PMID: 34787024 PMCID: PMC8604464 DOI: 10.1080/07853890.2021.2004322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 11/02/2021] [Indexed: 11/29/2022] Open
Abstract
Internists are front-line health care providers that commonly provide the first encounter to patients for dermatological conditions, especially atopic dermatitis (AD). Internists need to be comfortable with managing mild-moderate AD in their practices. Criteria and guidelines established in dermatology literature are available to help the general practitioner diagnose and treat AD. AD is a systemic disease associated with multiple cutaneous and extra-cutaneous comorbidities that warrant screening by internists, especially mental health conditions. Environmental factors may play a role in the development or worsening of AD; however, there is currently no strong evidence to guide specific population- or clinic-based interventions for their avoidance. While food allergies are common in AD patients, the role of food allergens as an exacerbating factor for AD is controversial. Before starting any dietary modifications, careful evaluation should be performed by an allergist. If the patient is not well-controlled despite adequate topical therapies or is experiencing severe/worsening disease, early referral to dermatology is warranted to rule out confounding diagnoses and/or escalation to systemic therapies. Finally, it is important to recognise the racial disparities present in AD and address these when formulating treatment plans.Key messages:Confounding dermatoses, either instead of or in addition to AD, should be considered in treatment-refractory AD, and the appropriate workup may be initiated while awaiting dermatology referral.AD patients have multiple cutaneous and extra-cutaneous comorbidities that warrant screening by internists, especially mental health conditions.
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Affiliation(s)
- Shanthi Narla
- Department of Dermatology, St. Luke’s University Health Network, Easton, PA, USA
| | - Jonathan I. Silverberg
- Department of Dermatology, The George Washington University School of Medicine and Health Sciences, Washington, DC, USA
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9
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Ayasse MT, Ahmed A, Espinosa ML, Walker CJ, Yousaf M, Thyssen JP, Silverberg JI. What are the highest yielding search strategy terms for systematic reviews in atopic dermatitis? A systematic review. Arch Dermatol Res 2021; 313:737-750. [PMID: 33221950 DOI: 10.1007/s00403-020-02165-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 10/16/2020] [Accepted: 10/30/2020] [Indexed: 12/30/2022]
Abstract
The impact of search strategies on systematic reviews (SR) of atopic dermatitis (AD) is unknown. The purpose of this review was to evaluate search strategies used in SR of AD and their impact on the frequency of manuscripts identified. MEDLINE and EMBASE were searched for SR related to AD. Simulations were performed by running combinations of search terms in MEDLINE and EMBASE. Overall, 250 SR met inclusion criteria, of which 225 specified search strategies. SR using 5-6 terms (20.0% to 12.1%) or ≥ 7 (40.0% to 18.8%) terms decreased, whereas SR using 3-4 terms numerically increased (18.8% to 30.2%) and 1-2 terms remained similar (37.5% to 38.9%) from 1999-2009 to 2015-2019. The most commonly searched terms were "atopic dermatitis" (n = 166), followed by "eczema" (n = 156), "dermatitis atopic'" (n = 81), "atopic eczema" (n = 74), "neurodermatitis" (n = 59), "Besniers prurigo" (n = 29), "infantile eczema" (n = 27), and "childhood eczema" (n = 19). Simulations revealed that "eczema" and "atopic dermatitis" yielded the most hits. The number of search terms that maximized hits in MEDLINE and EMBASE was 5 and 4, respectively. Search strategies for AD were heterogeneous, with high proportions of search strategies providing few search hits. Future studies should use standardized and optimized search terms.
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Affiliation(s)
- Marissa T Ayasse
- Department of Dermatology, The George Washington University School of Medicine and Health Sciences, 2150 Pennsylvania Avenue NW, Suite 2B-425, Washington, DC, 20037, USA
| | - Adnan Ahmed
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Maria L Espinosa
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Christina J Walker
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Muhammad Yousaf
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Jacob P Thyssen
- Department of Dermatology and Allergy, Herlev and Gentofte Hospital, University of Copenhagen, Hellerup, Denmark
| | - Jonathan I Silverberg
- Department of Dermatology, The George Washington University School of Medicine and Health Sciences, 2150 Pennsylvania Avenue NW, Suite 2B-425, Washington, DC, 20037, USA.
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10
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Lee J, Shin M, Lee B. Influence of age at complementary food introduction on the development of asthma and atopic dermatitis in Korean children aged 1-3 years. Clin Exp Pediatr 2021; 64:408-414. [PMID: 33147910 PMCID: PMC8342876 DOI: 10.3345/cep.2020.01382] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 10/12/2020] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND Complementary food in infancy is necessary for human growth, neurodevelopment, and health. However, the role of allergen consumption in early infancy and its effects on the development of food allergy or tolerance remain unclear. PURPOSE To investigate the influence of age at the time of complementary food introduction on the development of asthma and atopic dermatitis in Korean children aged 1-3 years. METHODS We combined data from the Korea National Health and Nutrition Examination Survey collected from 2010 to 2014 and analyzed 1619 children aged 1-3 years who were included in the survey. Multivariate regression analysis was used to identify associations among type of feeding, age at the time of complementary food introduction, and doctor-diagnosed atopic dermatitis and asthma. RESULTS Age at the time of complementary food introduction was not significantly associated with doctor-diagnosed atopic dermatitis and asthma in children aged 1-3 years. In the univariate analysis, children with asthma showed higher water and sodium intake levels than nonasthmatic children. However, this relationship was not significant in the multivariate regression analysis. CONCLUSION The present study revealed no statistically significant relationship between age at the time of complementary food introduction and the risk of atopic dermatitis and asthma in young Korean children. A national prospective study is needed to clarify the influence of age at the time of complementary food introduction on the development of allergic diseases.
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Affiliation(s)
- Jihyun Lee
- Department of Pediatrics, Soonchunhyang University Bucheon Hospital, Soonchunhyang University School of Medicine, Bucheon, Korea
| | - Meeyong Shin
- Department of Pediatrics, Soonchunhyang University Bucheon Hospital, Soonchunhyang University School of Medicine, Bucheon, Korea
| | - Bora Lee
- Institute of Health & Environment, Graduate School of Public Health, Seoul National University, Seoul, Korea
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11
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Matterne U, Tischer C, Wang J, Knüttel H, Genuneit J, Perkin M, Apfelbacher C. The evidence for interventions in early childhood allergy prevention - towards a living systematic review: protocol. F1000Res 2021; 10:235. [PMID: 36793508 PMCID: PMC9924298 DOI: 10.12688/f1000research.51490.2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/09/2021] [Indexed: 12/24/2022] Open
Abstract
Background: Research in early childhood allergy prevention (ECAP) is flourishing and new intervention strategies have proven to be promising. Due to the dynamic nature of ECAP, gaps between what is known and how guidelines inform practice are likely. A living systematic review (LSR) can narrow this gap by incorporating new evidence as it becomes available. No efficacy comparisons across various ECAP interventions for similar outcomes have been carried out. Networks of randomised clinical trials can be evaluated in the context of a network meta-analysis (NMA). We aim to establish a LSR on the efficacy and safety of any intervention investigated in randomised controlled trials (RCT) to prevent the occurrence of allergic sensitisation (AS), symptoms or diagnoses of allergic diseases in infancy and early childhood (0-3 years). Methods: A baseline SR will synthesise the evidence from existing SRs of RCTs as well as RCTs not yet considered in these. After completion of the baseline SR we propose to conduct a LSR. Using this methodology, we aim to undertake constant evidence surveillance, three-monthly search updates, and review updates every three months, should new evidence emerge. Conclusions: The ECAP evidence landscape has undergone dramatic transformations and this process is likely to continue. As a response to this, a LSR offers the potential to allow more timely synthesis of new evidence as it emerges. Long gaps between updates of SRs makes it harder for guidelines and recommendations to be up to date. Users of information, such as parents, may be confused if they encounter new evidence that is not part of a trusted guideline. A LSR approach allows us to continuously search the literature and update the evidence-base of existing ECAP interventions resulting in a decreased timespan from evidence accrual to informing clinical practice.
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Affiliation(s)
- Uwe Matterne
- Institute of Social Medicine and Health Systems Research, Otto von Guericke University Magdeburg, Leipziger Str. 44, Magdeburg, 39120, Germany,
| | - Christina Tischer
- Institute for Health Resort Medicine and Health Promotion, State Institute of Health, Bavarian Health and Food Safety Authority, Prinzregentenstraße 6, Bad Kissingen, 97688, Germany
| | - Jiancong Wang
- Institute of Social Medicine and Health Systems Research, Otto von Guericke University Magdeburg, Leipziger Str. 44, Magdeburg, 39120, Germany
| | - Helge Knüttel
- University Library, University of Regensburg, Universitätsstraße 31, Regensburg, 93053, Germany
| | - Jon Genuneit
- Pediatric Epidemiology, Department of Pediatrics, Medical Faculty, Leipzig University, Liebigstraße 20a, Leipzig, 04103, Germany
| | - Michael Perkin
- Population Health Research Institute, St George's, University of London, Cranmer Terrace, London, SW17 0RE, UK
| | - Christian Apfelbacher
- Institute of Social Medicine and Health Systems Research, Otto von Guericke University Magdeburg, Leipziger Str. 44, Magdeburg, 39120, Germany,Family Medicine and Primary Care, Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, 11 Mandalay Road, 308232, Singapore
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12
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Ekelund L, Gloppen I, Øien T, Simpson MR. Duration of breastfeeding, age at introduction of complementary foods and allergy-related diseases: a prospective cohort study. Int Breastfeed J 2021; 16:5. [PMID: 33407672 PMCID: PMC7789718 DOI: 10.1186/s13006-020-00352-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 12/10/2020] [Indexed: 11/19/2022] Open
Abstract
Background The influences of breastfeeding and infant diet in the prevention of allergy-related diseases are uncertain and many of the studies conducted on the topic are limited by methodological challenges. Our aim was to assess whether the duration of breastfeeding and age at complementary food introduction affected the prevalence of asthma, wheeze, allergic rhinoconjunctivitis (ARC) and eczema at two and six years of age. Methods We used information gathered between 2000 and 2014 through questionnaires in the Prevention of Allergy among Children in Trondheim (PACT) study, a prospective cohort study in Trondheim, Norway. The current study includes 6802 children who submitted questionnaires detailing breastfeeding duration and or age at introduction to complementary foods, as well as at least one of the child health questionnaires completed at two and six years of age. Adjusted odds ratios (aORs) were calculated for each combination of exposure and outcomes and sensitivity analyses were performed to assess the possible influence of recall bias and reverse causality. Results The mean duration of breastfeeding was 11 months (SD 5.6) in this study population and 5695 of 6796 (84%) infants had been breastfed for at least 6 months. We did not find any conclusive preventative effect of longer breastfeeding on parental reported doctor-diagnosed asthma, aOR 0.79 (95% CI 0.51, 1.21). However, at 6 years of age we observed a reduction in the less strictly defined outcome wheeze, aOR 0.71 (95% CI 0.53, 0.95). Longer breastfeeding was associated with a reduced risk of ARC at 2 years, aOR 0.65 (95% CI 0.49, 0.86), with a continued protective trend at 6 years, aOR 0.77 (95% CI 0.58, 1.04). Conclusions Longer breastfeeding resulted in a reduced risk of wheeze and a trend towards a protective effect on ARC up until school age. No conclusive associations were seen between the duration of breastfeeding or age at introduction to complementary foods and prevention of asthma, wheeze, ARC and eczema. Trial registration The trial is registered in Current Controlled Trials as ISRCTN28090297. Supplementary Information The online version contains supplementary material available at 10.1186/s13006-020-00352-2.
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Affiliation(s)
- Louise Ekelund
- Faculty of Medicine, Norwegian University of Science and Technology, NTNU, Trondheim, Norway
| | - Inga Gloppen
- Faculty of Medicine, Norwegian University of Science and Technology, NTNU, Trondheim, Norway
| | - Torbjørn Øien
- Department of Public Health and Nursing, Norwegian University of Science and Technology, NTNU, Trondheim, Norway
| | - Melanie Rae Simpson
- Department of Public Health and Nursing, Norwegian University of Science and Technology, NTNU, Trondheim, Norway. .,Clinic of Laboratory Medicine, St Olavs Hospital, Trondheim, Norway.
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13
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The Role of Environmental Exposures in Atopic Dermatitis. Curr Allergy Asthma Rep 2020; 20:74. [PMID: 33047271 DOI: 10.1007/s11882-020-00971-z] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/15/2020] [Indexed: 02/07/2023]
Abstract
PURPOSE OF REVIEW Although genetic factors clearly play a role in the development of atopic dermatitis (AD), the recent dramatic increase in the prevalence of AD in low- and middle-income countries is not consistent with only a role of genetic factors. These findings strongly suggest that environmental factors may play an important role in the pathogenesis of AD. RECENT FINDINGS We reviewed the role of gene-environment studies; in utero exposures including tobacco smoke, alcohol, maternal stress, various digestive supplements, and gestational diabetes; early-life exposures including diet, gut microbiota, antibiotics, and breastfeeding; climate including temperature, ultraviolet radiation exposure, and air pollution; and household products, indoor allergens, water hardness, pH, and skin microbiota and their effects on AD. Environmental factors definitely play a role in the pathogenesis of AD. However, identifying definitive factors continues to be difficult in the setting of conflicting evidence and the complex interactions between genotypes and the environment resulting in a multitude of AD phenotypes. All of the different environmental interactions discussed highlight the importance of intervening on multiple levels in a patient's environment to improve or even prevent AD symptoms. Further, the importance of modifying environmental factors early on in a person's life is demonstrated. When possible, all of these environmental factors should be considered in treating a patient with AD and the appropriate modifications should be made at population and individual levels.
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Roberts G, Almqvist C, Boyle R, Crane J, Hogan SP, Marsland B, Saglani S, Woodfolk JA. Developments in the field of clinical allergy in 2018 through the eyes of Clinical and Experimental Allergy, Part II. Clin Exp Allergy 2020; 49:1550-1557. [PMID: 31833123 DOI: 10.1111/cea.13535] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In this article, we describe developments in the field of clinical allergy as described by Clinical and Experimental Allergy in 2018; epidemiology, asthma and rhinitis, clinical allergy and allergens are all covered.
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Affiliation(s)
- Graham Roberts
- Clinical and Experimental Sciences and Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, UK.,NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton, UK.,The David Hide Asthma and Allergy Research Centre, St Mary's Hospital, Isle of Wight, UK
| | - C Almqvist
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.,Pediatric Allergy and Pulmonology Unit at Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - R Boyle
- Department of Paediatrics, Imperial College London, London, UK
| | - J Crane
- Department of Medicine, University of Otago Wellington, Wellington, New Zealand
| | - S P Hogan
- Department of Pathology, Mary H Weiser Food Allergy Center, Michigan Medicine, University of Michigan, Ann Arbor, MI, USA
| | - B Marsland
- Department of Immunology and Pathology, Monash University, Melbourne, Vic., Australia
| | - S Saglani
- National Heart & Lung Institute, Imperial College London, London, UK
| | - J A Woodfolk
- Division of Asthma, Allergy and Immunology, Department of Medicine, University of Virginia School of Medicine, Charlottesville, VA, USA
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15
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Roberts G. BSACI Annual Meeting, Harrogate, October 2019. Clin Exp Allergy 2020; 49:742-743. [PMID: 31155802 DOI: 10.1111/cea.13413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- G Roberts
- Clinical and Experimental Sciences and Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, UK.,NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton, UK.,The David Hide Asthma and Allergy Research Centre, St Mary's Hospital, Isle of Wight, UK
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16
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Tham EH, Rajakulendran M, Lee BW, Van Bever HPS. Epicutaneous sensitization to food allergens in atopic dermatitis: What do we know? Pediatr Allergy Immunol 2020; 31:7-18. [PMID: 31541586 DOI: 10.1111/pai.13127] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 08/05/2019] [Accepted: 09/12/2019] [Indexed: 02/06/2023]
Abstract
Atopic dermatitis (AD) is a chronic inflammatory skin disease mainly affecting children, which has no definitive curative therapy apart from natural outgrowing. AD is persistent in 30%-40% of children. Epithelial barrier dysfunction in AD is a significant risk factor for the development of epicutaneous food sensitization, food allergy, and other allergic disorders. There is evidence that prophylactic emollient applications from birth may be useful for primary prevention of AD, but biomarkers are needed to guide cost-effective targeted therapy for high-risk individuals. In established early-onset AD, secondary preventive strategies are needed to attenuate progression to other allergic disorders such as food allergy, asthma, and allergic rhinitis (the atopic march). This review aims to describe the mechanisms underpinning the development of epicutaneous sensitization to food allergens and progression to clinical food allergy; summarize current evidence for interventions to halt the progression from AD to food sensitization and clinical food allergy; and highlight unmet needs and directions for future research.
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Affiliation(s)
- Elizabeth Huiwen Tham
- Department of Paediatrics, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,Khoo Teck Puat-National University Children's Medical Institute, National University Hospital, National University Health System, Singapore, Singapore
| | - Mohana Rajakulendran
- Khoo Teck Puat-National University Children's Medical Institute, National University Hospital, National University Health System, Singapore, Singapore
| | - Bee Wah Lee
- Department of Paediatrics, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Hugo P S Van Bever
- Department of Paediatrics, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,Khoo Teck Puat-National University Children's Medical Institute, National University Hospital, National University Health System, Singapore, Singapore
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