The influence of leptin on Th1/Th2 balance in obese children with asthma

Detalhes bibliográficos
Autor(a) principal: Youssef,Doaa Mohammed
Data de Publicação: 2013
Outros Autores: Elbehidy,Rabab Mohamed, Shokry,Dina Mahamoud, Elbehidy,Eman Mohamed
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Jornal Brasileiro de Pneumologia (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-37132013000500562
Resumo: OBJECTIVE: In individuals with asthma, obesity induces the production of leptin and is associated with disease severity. Our objective was to evaluate the levels of serum leptin and their effect on Th1/Th2 balance in obese and non-obese children with asthma, as well as to investigate the association between serum leptin levels and clinical outcomes. METHODS: We evaluated 50 atopic children with physician-diagnosed moderate-to-severe persistent asthma and 20 controls. The children with asthma were divided into two groups, by body mass index percentile: obese (n = 25) and non-obese (n = 25). From all subjects, we collected peripheral blood samples in order to determine the levels of leptin, IFN-γ, and IL-4. Asthma severity was assessed by an asthma symptom score, and the results were correlated with the parameters studied. RESULTS: Serum leptin levels were significantly higher in the obese asthma group than in the non-obese asthma group, as well as being significantly higher in the children with asthma than in the controls, whereas IFN-γ levels were significantly higher and IL-4 levels were significantly lower in the obese asthma group than in the non-obese asthma group. In addition, the obese asthma group showed higher asthma symptom scores and significantly lower FEV1 (% of predicted) than did the non-obese asthma group. There was a significant positive correlation between leptin and IFN-γ levels only in the obese asthma group. CONCLUSIONS: Although leptin is involved in the pathogenesis of asthma in obese and non-obese children, its effect is more pronounced in the former. In the presence of high leptin levels, only obese children with asthma exhibited Th1 polarization, with higher IFN-γ levels and greater asthma severity.
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spelling The influence of leptin on Th1/Th2 balance in obese children with asthmaLeptinAsthmaInterferon-gammaInterleukin-4 OBJECTIVE: In individuals with asthma, obesity induces the production of leptin and is associated with disease severity. Our objective was to evaluate the levels of serum leptin and their effect on Th1/Th2 balance in obese and non-obese children with asthma, as well as to investigate the association between serum leptin levels and clinical outcomes. METHODS: We evaluated 50 atopic children with physician-diagnosed moderate-to-severe persistent asthma and 20 controls. The children with asthma were divided into two groups, by body mass index percentile: obese (n = 25) and non-obese (n = 25). From all subjects, we collected peripheral blood samples in order to determine the levels of leptin, IFN-γ, and IL-4. Asthma severity was assessed by an asthma symptom score, and the results were correlated with the parameters studied. RESULTS: Serum leptin levels were significantly higher in the obese asthma group than in the non-obese asthma group, as well as being significantly higher in the children with asthma than in the controls, whereas IFN-γ levels were significantly higher and IL-4 levels were significantly lower in the obese asthma group than in the non-obese asthma group. In addition, the obese asthma group showed higher asthma symptom scores and significantly lower FEV1 (% of predicted) than did the non-obese asthma group. There was a significant positive correlation between leptin and IFN-γ levels only in the obese asthma group. CONCLUSIONS: Although leptin is involved in the pathogenesis of asthma in obese and non-obese children, its effect is more pronounced in the former. In the presence of high leptin levels, only obese children with asthma exhibited Th1 polarization, with higher IFN-γ levels and greater asthma severity. Sociedade Brasileira de Pneumologia e Tisiologia2013-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-37132013000500562Jornal Brasileiro de Pneumologia v.39 n.5 2013reponame:Jornal Brasileiro de Pneumologia (Online)instname:Sociedade Brasileira de Pneumologia e Tisiologia (SBPT)instacron:SBPT10.1590/S1806-37132013000500006info:eu-repo/semantics/openAccessYoussef,Doaa MohammedElbehidy,Rabab MohamedShokry,Dina MahamoudElbehidy,Eman Mohamedeng2013-12-03T00:00:00Zoai:scielo:S1806-37132013000500562Revistahttp://www.jornaldepneumologia.com.br/default.aspONGhttps://old.scielo.br/oai/scielo-oai.php||jbp@jbp.org.br|| jpneumo@jornaldepneumologia.com.br1806-37561806-3713opendoar:2013-12-03T00:00Jornal Brasileiro de Pneumologia (Online) - Sociedade Brasileira de Pneumologia e Tisiologia (SBPT)false
dc.title.none.fl_str_mv The influence of leptin on Th1/Th2 balance in obese children with asthma
title The influence of leptin on Th1/Th2 balance in obese children with asthma
spellingShingle The influence of leptin on Th1/Th2 balance in obese children with asthma
Youssef,Doaa Mohammed
Leptin
Asthma
Interferon-gamma
Interleukin-4
title_short The influence of leptin on Th1/Th2 balance in obese children with asthma
title_full The influence of leptin on Th1/Th2 balance in obese children with asthma
title_fullStr The influence of leptin on Th1/Th2 balance in obese children with asthma
title_full_unstemmed The influence of leptin on Th1/Th2 balance in obese children with asthma
title_sort The influence of leptin on Th1/Th2 balance in obese children with asthma
author Youssef,Doaa Mohammed
author_facet Youssef,Doaa Mohammed
Elbehidy,Rabab Mohamed
Shokry,Dina Mahamoud
Elbehidy,Eman Mohamed
author_role author
author2 Elbehidy,Rabab Mohamed
Shokry,Dina Mahamoud
Elbehidy,Eman Mohamed
author2_role author
author
author
dc.contributor.author.fl_str_mv Youssef,Doaa Mohammed
Elbehidy,Rabab Mohamed
Shokry,Dina Mahamoud
Elbehidy,Eman Mohamed
dc.subject.por.fl_str_mv Leptin
Asthma
Interferon-gamma
Interleukin-4
topic Leptin
Asthma
Interferon-gamma
Interleukin-4
description OBJECTIVE: In individuals with asthma, obesity induces the production of leptin and is associated with disease severity. Our objective was to evaluate the levels of serum leptin and their effect on Th1/Th2 balance in obese and non-obese children with asthma, as well as to investigate the association between serum leptin levels and clinical outcomes. METHODS: We evaluated 50 atopic children with physician-diagnosed moderate-to-severe persistent asthma and 20 controls. The children with asthma were divided into two groups, by body mass index percentile: obese (n = 25) and non-obese (n = 25). From all subjects, we collected peripheral blood samples in order to determine the levels of leptin, IFN-γ, and IL-4. Asthma severity was assessed by an asthma symptom score, and the results were correlated with the parameters studied. RESULTS: Serum leptin levels were significantly higher in the obese asthma group than in the non-obese asthma group, as well as being significantly higher in the children with asthma than in the controls, whereas IFN-γ levels were significantly higher and IL-4 levels were significantly lower in the obese asthma group than in the non-obese asthma group. In addition, the obese asthma group showed higher asthma symptom scores and significantly lower FEV1 (% of predicted) than did the non-obese asthma group. There was a significant positive correlation between leptin and IFN-γ levels only in the obese asthma group. CONCLUSIONS: Although leptin is involved in the pathogenesis of asthma in obese and non-obese children, its effect is more pronounced in the former. In the presence of high leptin levels, only obese children with asthma exhibited Th1 polarization, with higher IFN-γ levels and greater asthma severity.
publishDate 2013
dc.date.none.fl_str_mv 2013-10-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-37132013000500562
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-37132013000500562
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1806-37132013000500006
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Pneumologia e Tisiologia
publisher.none.fl_str_mv Sociedade Brasileira de Pneumologia e Tisiologia
dc.source.none.fl_str_mv Jornal Brasileiro de Pneumologia v.39 n.5 2013
reponame:Jornal Brasileiro de Pneumologia (Online)
instname:Sociedade Brasileira de Pneumologia e Tisiologia (SBPT)
instacron:SBPT
instname_str Sociedade Brasileira de Pneumologia e Tisiologia (SBPT)
instacron_str SBPT
institution SBPT
reponame_str Jornal Brasileiro de Pneumologia (Online)
collection Jornal Brasileiro de Pneumologia (Online)
repository.name.fl_str_mv Jornal Brasileiro de Pneumologia (Online) - Sociedade Brasileira de Pneumologia e Tisiologia (SBPT)
repository.mail.fl_str_mv ||jbp@jbp.org.br|| jpneumo@jornaldepneumologia.com.br
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