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Previous issue date: 2015-03-06 / CONTEXT : Probiotics have emerged as a promising intervention for the prevention of respiratory infections in children, according to several randomized controlled trials.OBJECTIVE : Critically assess the effect of probiotics on prevention of respiratory tract infections in children and adolescents.METHODS: Data Sources: Searches were conducted on February 24, 2014 in the following databases: MEDLINE, EMBASE, LILACS, SCIELO, CINAHL, SCOPUS, and Web of Science. The following combinations of terms were used: ?respiratory tract infections? AND probiotics. Study selection: Randomized clinical trials assessing the effect of probiotics on respiratory tract infections (RTIs) in children and adolescents were included. Studies involving children with chronic diseases or other pre-existing comorbidities and those that did not specifying the type of probiotic were excluded. Data extraction and Synthesis: Two reviewers, working independently, screened all titles and abstracts to identify studies that met the eligibility criteria. Pairwise and network analyses were performed to identify the effects of probiotics on respiratory infections. Main outcomes and Measures: Main and secondary outcomes were respiratory tract infections and adverse effects, respectively.RESULTS : Twenty-one trials with 6.603 participants were included. Direct comparison analysis suggested that Lactobacillus casei rhamnosus (LCA) was the only effective probiotic to the rate of respiratory infections compared to placebo (RR0.38; Crl 0.19-0.45). Network analysis showed that the Lactobacillus casei rhamnosus probiotic exhibited a 54.7% probability of being classified in first, while the probability of Lactobacillus fermentum CECT5716 (LFC) being last in the ranking was 15.3%. Lactobacillus casei rhamnosus showed no better effect compared to other probiotic strains by indirect analysis. CONCLUSION : This systematic review found a lack of evidence to support the effect of probiotic supplementation on the incidence rate of respiratory tract infections in children and adolescents. / INTRODU??O: Os probi?ticos ganhando espa?o como uma interven??o promissora para a preven??o de infec??es respirat?rias em crian?as e adolescentes, de acordo com v?rios ensaios cl?nicos randomizados controlados.OBJETIVOS : Avaliar criticamente o efeito de diferentes probi?ticos na preven??o de infec??es do trato respirat?rio em crian?as e adolescentes.M?TODOS : Busca dos dados: Foram realizadas buscas em 24 de fevereiro de 2014 nas seguintes bases de dados: MEDLINE, EMBASE, LILACS, SCIELO, CINAHL, Scopus e Web of Science. Foram utilizadas as seguintes combina??es de termos: ?infec??es do trato respirat?rio? e probi?ticos. Sele??o dos estudos: foram inclu?dos ensaios cl?nicos randomizados que avaliaram o efeito dos probi?ticos em infec??es do trato respirat?rio (ITR) em crian?as e adolescentes. Estudos envolvendo crian?as com doen?as cr?nicas ou outras comorbidades pr?-existentes e aqueles que n?o especificaram o tipo do probi?ticos administrado foram exclu?dos. Extra??o e s?ntese dos dados: dois revisores, trabalhando de forma independente, revisaram todos os t?tulos e resumos dos estudos para identificar estudos que preenchiam os crit?rios de elegibilidade. Foram realizadas an?lises de pares e de rede para identificar os efeitos dos probi?ticos sobre as infec??es respirat?rias. Principais desfechos: os desfechos prim?rios e secund?rios foram infec??es do trato respirat?rio e efeitos adversos, respectivamente.RESULTADOS : vinte e um ensaios com 6.603 participantes foram inclu?dos. A an?lise de compara??o direta sugeriu que o Lactobacillus casei rhamnosus (LCA) foi o ?nico probi?ticos eficaz na redu??o da incid?ncia de infec??es respirat?rias em compara??o com o placebo (RR 0,38; Crl 0,19-0,45). A an?lise de rede mostrou que o Lactobacillus casei rhamnosus apresentou probabilidade de 54,7% de estar classificado em primeiro lugar, enquanto a probabilidade do Lactobacillus fermentum CECT5716 (LFC) estar em ?ltimo lugar no ranking de efetividade foi de 15,3%. O Lactobacillus casei rhamnosus n?o apresentou melhor efeito em compara??o com outras cepas probioticas pelas an?lises indiretas. CONCLUS?O : Esta revis?o sistem?tica e meta-an?lise encontrou falta de evid?ncia para suportar o efeito da suplementa??o de probi?ticos na redu??o da incid?ncia de infec??es respirat?rias em crian?as e adolescentes.
| Identifer | oai:union.ndltd.org:IBICT/oai:tede2.pucrs.br:tede/5969 |
| Date | 06 March 2015 |
| Creators | Amaral , Marina Azambuja |
| Contributors | Jones, Marcus Herbert |
| Publisher | Pontif?cia Universidade Cat?lica do Rio Grande do Sul, Programa de P?s-Gradua??o em Medicina e Ci?ncias da Sa?de, PUCRS, Brasil, Faculdade de Medicina |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da PUC_RS, instname:Pontifícia Universidade Católica do Rio Grande do Sul, instacron:PUC_RS |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 7620745074616285884, 600, 600, 600, -8624664729441623247, -969369452308786627 |
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