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Arrais M, Maricoto T, Nwaru BI, Cooper PJ, Gama JM, Brito M, Taborda-Barata L. Helminth infections and allergic diseases: systematic review and meta-analysis of the global literature. J Allergy Clin Immunol 2021; 149:2139-2152. [PMID: 34968529 DOI: 10.1016/j.jaci.2021.12.777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 12/12/2021] [Accepted: 12/17/2021] [Indexed: 10/19/2022]
Abstract
INTRODUCTION There is considerable research interest in the role of helminth infections in the development of allergic diseases. However, findings from previous studies are mixed. Existing systematic reviews of these studies are outdated. We performed a systematic review of the global literature on the association between helminth infections and development and clinical outcomes of allergic diseases. METHODS We searched Cochrane Library, MEDLINE, EMBASE, ISI Web of Science, PubMed, Global Index Medicus, Scielo, KoreaMed, Google Scholar, and Lilacs for studies published up to January 2020. We included observational epidemiological studies (cohort, case-control and cross-sectional studies) of children and adults reporting associations between helminth infections and asthma, allergic rhinitis, eczema and atopy. We performed random-effects meta-analysis to summarize the effect estimates. RESULTS We included 80 studies with 99,967 participants. In the meta-analyses, we did not observe an overall association between helminth infections and allergic diseases. There was, however, evidence that A. lumbricoides infections was associated with an increased risk of bronchial hyperreactivity in children (RR:1.41, 95%CI: 1.17-1.70; I2=50, p for I2=0.09), and was associated with an increased risk of atopy among helminth-infected adults (RR:1.37, 95%CI: 1.18-1.61; I2=52, p for I2=0.02). We found no study that addressed the association between helminth infection and clinical outcomes of allergic diseases. The overall strength of the underlying evidence was low to moderate. CONCLUSION Helminth infections may increase the risk of bronchial hyperreactivity in children and atopy in adults. Well-designed longitudinal cohorts may help clarify potential causal associations between chronic helminth infections and allergic diseases.
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Affiliation(s)
- Margarete Arrais
- Department of Pulmonology, Military Hospital, Luanda, Angola; CISA - Centro de Investigação em Saúde de Angola, Caxito, Bengo, Angola; GRUBI - Systematic Reviews Group, University of Beira Interior, Covilhã, Portugal
| | - Tiago Maricoto
- GRUBI - Systematic Reviews Group, University of Beira Interior, Covilhã, Portugal; Aveiro Healthcare Centre, Aveiro-Aradas Family Health Unit, Aveiro, Portugal; Faculty of Health Sciences, University of Beira Interior, CACB-Clinical Academic Centre of Beiras, Covilhã, Portugal.
| | - Bright I Nwaru
- Krefting Research Centre, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Philip J Cooper
- Institute of Infection and Immunity, St George's University of London, London, UK; School of Medicine, International University of Ecuador, Quito, Ecuador
| | - Jorge Mr Gama
- GRUBI - Systematic Reviews Group, University of Beira Interior, Covilhã, Portugal; Centre of Mathematics and Applications, Faculty of Sciences, University of Beira Interior, Covilha, Portugal
| | - Miguel Brito
- CISA - Centro de Investigação em Saúde de Angola, Caxito, Bengo, Angola; Health and Technology Research Center (H&TRC), Escola Superior de Tecnologia da Saúde de Lisboa, Instituto Politécnico de Lisboa, Portugal
| | - Luis Taborda-Barata
- GRUBI - Systematic Reviews Group, University of Beira Interior, Covilhã, Portugal; CICS- Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal; Department of Allergy and Clinical Immunology, Cova da Beira University Hospital Centre, Covilhã, Portugal
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Won NH, Park SH, Ahn SH, Kim CB, Kwon JH, Seo WH, Song DJ, Yoo Y. Clinical characteristics of allergic rhinitis and nonallergic rhinitis in Korean children. ALLERGY ASTHMA & RESPIRATORY DISEASE 2020. [DOI: 10.4168/aard.2020.8.1.20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Na Hae Won
- Department of Pediatrics, Korea University Medical College, Seoul, Korea
| | - Sang Hyun Park
- Department of Pediatrics, Korea University Medical College, Seoul, Korea
| | - So Hyun Ahn
- Allergy Immunology Center, Korea University, Seoul, Korea
| | - Chae Bong Kim
- Environmental Health Center, Korea University Anam Hospital, Seoul, Korea
| | - Jung Hyun Kwon
- Department of Pediatrics, Korea University Medical College, Seoul, Korea
| | - Won Hee Seo
- Department of Pediatrics, Korea University Medical College, Seoul, Korea
| | - Dae Jin Song
- Department of Pediatrics, Korea University Medical College, Seoul, Korea
| | - Young Yoo
- Department of Pediatrics, Korea University Medical College, Seoul, Korea
- Allergy Immunology Center, Korea University, Seoul, Korea
- Environmental Health Center, Korea University Anam Hospital, Seoul, Korea
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Affiliation(s)
- Kyung Suk Lee
- Department of Pediatrics, College of Medicine, Hanyang University, Seoul, Korea
| | - Yeong Ho Rha
- Department of Pediatrics, Kyung Hee University School of Medicine, Seoul, Korea
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Jeon HR, Choi YS, Kim SM, Yoon SJ, Kim JW, Kim M, Lee JY, Yoon JH. Association between electronic cigarette smoking and allergic rhinitis – The Korea National Health and Nutrition Examination Survey (2015). ALLERGY ASTHMA & RESPIRATORY DISEASE 2017. [DOI: 10.4168/aard.2017.5.6.344] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Hye Ran Jeon
- Department of Family Medicine, Korea University Guro hospital, Seoul, Korea
| | - Youn Seon Choi
- Department of Family Medicine, Korea University Guro hospital, Seoul, Korea
| | - Seon Mee Kim
- Department of Family Medicine, Korea University Guro hospital, Seoul, Korea
| | - So Jung Yoon
- Department of Family Medicine, Korea University Guro hospital, Seoul, Korea
| | - Jin Wook Kim
- Department of Family Medicine, Korea University Guro hospital, Seoul, Korea
| | - Man Kim
- Department of Family Medicine, Korea University Guro hospital, Seoul, Korea
| | - Ji Young Lee
- Department of Family Medicine, Korea University Guro hospital, Seoul, Korea
| | - Jung Hwan Yoon
- Department of Family Medicine, Korea University Guro hospital, Seoul, Korea
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