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Vitamin A deficiency alters airway resistance in children with acute upper respiratory infection
Journal article   Open access   Peer reviewed

Vitamin A deficiency alters airway resistance in children with acute upper respiratory infection

Cleia T Amaral, Núbia N Pontes, Bruna L L Maciel, Hugo S M Bezerra, Ana Nataly A B Triesta, Selma M B Jeronimo, Stephen E McGowan and Vera M Dantas
Pediatric pulmonology, Vol.48(5), pp.481-489
05/2013
DOI: 10.1002/ppul.22621
PMCID: PMC7167945
PMID: 22833544
url
https://doi.org/10.1002/ppul.22621View
Published (Version of record) Open Access

Abstract

To assess whether vitamin A deficiency alters the recovery of total respiratory resistance (TRR) following acute upper respiratory tract infection (URI). This is a case control study of children, age 4-6 years and grouped as: URI, (n = 74), URI and wheezing, (URI-wheezing, n = 52), and healthy controls (n = 51). Vitamin A and total respiratory resistance (TRR) were assessed using the modified relative dose response (MRDR) and forced oscillometry, respectively. Children with URI and URI-wheezing had lower retinol, 32.4 ± 13.12 and 18.3 ± 6.83 µg/dl respectively, compared to controls, 56.9 ± 29.82 µg/dl (ANOVA, P < 0.001). The MRDR was elevated in children in the URI or URI-wheezing groups 0.066 ± 0.045 and 0.021 ± 0.021, respectively, compared to controls 0.007 ± 0.006 (ANOVA, P < 0.0001). The TRR in the URI and URI-wheezing groups differed from controls. During convalescence, the TRR failed to decline in the URI-group only when the MRDR was >0.06. In the URI-wheezing group, TRR declined independently of retinol and MRDR. Vitamin A contributes to preservation of airway function during and in recovery after upper respiratory infection in children.
Cross-Sectional Studies Comorbidity Humans Child, Preschool Male Airway Resistance Vitamin A - analysis Respiratory Sounds - physiopathology Case-Control Studies Vitamin A Deficiency - epidemiology Vitamin A Deficiency - physiopathology Female Respiratory Tract Infections - epidemiology C-Reactive Protein - analysis Respiratory Tract Infections - physiopathology Child

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