Exposure to Toxocara spp. and Ascaris lumbricoides infections and risk of allergic rhinitis in children
Abstract Background Substantial experimental studies suggest a role for helminthes infections in the pathogenesis of allergies, but epidemiologic data have been inconsistent. Unlike to asthma, the association between helminthes infection and allergic rhinitis (AR) has been poorly studied. Therefore,...
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doaj-f45a97847a2d4f8da9152de1a5bab9022020-11-25T02:54:20ZengBMCAllergy, Asthma & Clinical Immunology1710-14922020-07-011611810.1186/s13223-020-00468-4Exposure to Toxocara spp. and Ascaris lumbricoides infections and risk of allergic rhinitis in childrenIraj Mohammadzadeh0Sorena Darvish1Seyed Mohammad Riahi2Solmaz Alizadeh Moghaddam3Mohammad Pournasrollah4Mousa Mohammadnia-Afrozi5Ali Rostami6Non-Communicable Pediatric Diseases Research Center, Health Research Institute, Babol University of Medical SciencesInfectious Diseases and Tropical Medicine Research Center, Health Research Institute, Babol University of Medical SciencesDepartment of Epidemiology and Biostatistics, Faculty of Health, Cardiovascular Diseases Research Center, Birjand University of Medical SciencesImmunoregulation Research Center, Health Research Institute, Babol University of Medical SciencesNon-Communicable Pediatric Diseases Research Center, Health Research Institute, Babol University of Medical SciencesImmunoregulation Research Center, Health Research Institute, Babol University of Medical SciencesInfectious Diseases and Tropical Medicine Research Center, Health Research Institute, Babol University of Medical SciencesAbstract Background Substantial experimental studies suggest a role for helminthes infections in the pathogenesis of allergies, but epidemiologic data have been inconsistent. Unlike to asthma, the association between helminthes infection and allergic rhinitis (AR) has been poorly studied. Therefore, we sought to evaluate the association between exposure to Ascaris and Toxocara infections and AR. Methods We did an age- and gender-matched case–control study of 81 children with physician-confirmed AR and 101 control subjects in a referral hospital for pediatric diseases in northern Iran. Exposure to Ascaris and Toxocara infections was evaluated by anti-A. lumbricoides- and anti-Toxocara- IgG antibodies using a commercial enzyme-linked immunosorbent assay. Associations were determined using multivariate logistic regression. Results Ascaris seropositivity was higher in children with rhinitis than in controls (12.34 vs. 3.96%). Ascaris seropositivity was positively associated with AR in univariate analysis (OR, 3.42; 95% CI 1.03–11.3; P value = 0.035), but this association was not significant after adjustment for potential confounders (OR, 1.85; 95% CI 0.42–8.18). Also Toxocara seropositivity was higher in children with AR than in healthy subjects (3.7% vs. 0.99), indicating non-significant association with AR in both univariate (OR, 3.84; 95% CI 0.39–37.7) and multivariate analyses (OR, 0.8; 95% CI 0.04–15.44). Conclusion Our results revealed that AR is not associated with seropositivity to Ascaris and Toxocara infections in general; however, a higher seropositivity rate was found for both parasites in children with AR. More studies with longitudinal design and larger sample size are needed to elucidate this association.http://link.springer.com/article/10.1186/s13223-020-00468-4Toxocara spp.Ascaris lumbricoidesSeropositivityELISAAllergic rhinitis |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Iraj Mohammadzadeh Sorena Darvish Seyed Mohammad Riahi Solmaz Alizadeh Moghaddam Mohammad Pournasrollah Mousa Mohammadnia-Afrozi Ali Rostami |
spellingShingle |
Iraj Mohammadzadeh Sorena Darvish Seyed Mohammad Riahi Solmaz Alizadeh Moghaddam Mohammad Pournasrollah Mousa Mohammadnia-Afrozi Ali Rostami Exposure to Toxocara spp. and Ascaris lumbricoides infections and risk of allergic rhinitis in children Allergy, Asthma & Clinical Immunology Toxocara spp. Ascaris lumbricoides Seropositivity ELISA Allergic rhinitis |
author_facet |
Iraj Mohammadzadeh Sorena Darvish Seyed Mohammad Riahi Solmaz Alizadeh Moghaddam Mohammad Pournasrollah Mousa Mohammadnia-Afrozi Ali Rostami |
author_sort |
Iraj Mohammadzadeh |
title |
Exposure to Toxocara spp. and Ascaris lumbricoides infections and risk of allergic rhinitis in children |
title_short |
Exposure to Toxocara spp. and Ascaris lumbricoides infections and risk of allergic rhinitis in children |
title_full |
Exposure to Toxocara spp. and Ascaris lumbricoides infections and risk of allergic rhinitis in children |
title_fullStr |
Exposure to Toxocara spp. and Ascaris lumbricoides infections and risk of allergic rhinitis in children |
title_full_unstemmed |
Exposure to Toxocara spp. and Ascaris lumbricoides infections and risk of allergic rhinitis in children |
title_sort |
exposure to toxocara spp. and ascaris lumbricoides infections and risk of allergic rhinitis in children |
publisher |
BMC |
series |
Allergy, Asthma & Clinical Immunology |
issn |
1710-1492 |
publishDate |
2020-07-01 |
description |
Abstract Background Substantial experimental studies suggest a role for helminthes infections in the pathogenesis of allergies, but epidemiologic data have been inconsistent. Unlike to asthma, the association between helminthes infection and allergic rhinitis (AR) has been poorly studied. Therefore, we sought to evaluate the association between exposure to Ascaris and Toxocara infections and AR. Methods We did an age- and gender-matched case–control study of 81 children with physician-confirmed AR and 101 control subjects in a referral hospital for pediatric diseases in northern Iran. Exposure to Ascaris and Toxocara infections was evaluated by anti-A. lumbricoides- and anti-Toxocara- IgG antibodies using a commercial enzyme-linked immunosorbent assay. Associations were determined using multivariate logistic regression. Results Ascaris seropositivity was higher in children with rhinitis than in controls (12.34 vs. 3.96%). Ascaris seropositivity was positively associated with AR in univariate analysis (OR, 3.42; 95% CI 1.03–11.3; P value = 0.035), but this association was not significant after adjustment for potential confounders (OR, 1.85; 95% CI 0.42–8.18). Also Toxocara seropositivity was higher in children with AR than in healthy subjects (3.7% vs. 0.99), indicating non-significant association with AR in both univariate (OR, 3.84; 95% CI 0.39–37.7) and multivariate analyses (OR, 0.8; 95% CI 0.04–15.44). Conclusion Our results revealed that AR is not associated with seropositivity to Ascaris and Toxocara infections in general; however, a higher seropositivity rate was found for both parasites in children with AR. More studies with longitudinal design and larger sample size are needed to elucidate this association. |
topic |
Toxocara spp. Ascaris lumbricoides Seropositivity ELISA Allergic rhinitis |
url |
http://link.springer.com/article/10.1186/s13223-020-00468-4 |
work_keys_str_mv |
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