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Published in: Clinical and Molecular Allergy 1/2020

01-12-2020 | Bronchial Asthma | Research

Association of 25-hydroxy vitamin D with asthma and its severity in children: a case–control study

Authors: Alireza Sharif, Hamed Haddad Kashani, Mohammad Reza Sharif

Published in: Clinical and Molecular Allergy | Issue 1/2020

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Abstract

Background

Universally, asthma has high prevalence rates and this has led numerous studies done into its causes. Despite extensive study on asthma the association between 25-Hydroxy Vitamin D (25(OH) vit. D) and asthma remains uncertain. In this study, the associations of 25(OH) vit. D levels with asthma and with the severity of asthma were evaluated.

Methods

This was a case–control study performed in 2015 in the city of Isfahan. In this study 520 children were studied. Children with asthma were classified as cases and children who were referred for reasons other than respiratory problems and asthma were considered as controls. Serum 25 (OH) vit. D levels were then examined and compared between the two groups. Differences among groups were stated to be statistically significant when P-values < 0.05.

Results

There were 260 asthmatic children and 260 controls in the present study. The mean 25 (OH) vit. D levels in the case group was 25.5 ± 16.62 and  16.76 ± 31.40 the control group and this difference was statistically significant (P < 0.05). 25(OH) vit. D levels were found to be 28.05 ± 16.98 in non-severe asthma and 21.41 ± 15.20 in severe asthma. Consequently 25(OH) vit. D level had inverse relationship with asthma severity (P = 0.002).

Conclusions

As the results of this study showed, the lower level of 25(OH) vit. D correlated with the higher severity of asthma manifestations. Therefore, it is recommended that 25(OH) vit. D levels get routinely checked especially in severe asthma cases and if the deficiency presents, appropriate therapeutic measures be used to reduce the asthma severity.
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Metadata
Title
Association of 25-hydroxy vitamin D with asthma and its severity in children: a case–control study
Authors
Alireza Sharif
Hamed Haddad Kashani
Mohammad Reza Sharif
Publication date
01-12-2020
Publisher
BioMed Central
Published in
Clinical and Molecular Allergy / Issue 1/2020
Electronic ISSN: 1476-7961
DOI
https://doi.org/10.1186/s12948-020-00122-9

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