Perfil de citocinas no colostro em função da idade gestacional e do crescimento fetal
Carregando...
Data
2016-02-29
Autores
Santiago, Luiza Tavares Carneiro [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Estadual Paulista (Unesp)
Resumo
INTRODUÇÃO: O efeito da idade gestacional e do crescimento fetal nos imunocomponentes do leite materno ainda é pouco conhecido. OBJETIVO: Determinar a quantidade de citocinas no colostro em função da idade gestacional e do crescimento fetal. MÉTODO: Estudo transversal, envolvendo mães de recém-nascidos prematuros (PT) e de termo (T), nascidos na Maternidade da Faculdade de Medicina de Botucatu – UNESP, em 2014-2015. Critério de inclusão: gestação única; ausência de diabetes materno, ou uso de medicações/drogas ilícitas, sorologias negativas; recém-nascido com peso adequado (AIG) ou pequeno para idade gestacional (PIG) e sem malformação. Excluídos: não obtenção do colostro, mastite, uso de medicamento pela puérpera. Foram estudados 4 grupos: PT-PIG (n=18), PT-AIG (n=42), T-PIG (n=45), T-AIG (controle, n=42). No colostro coletado entre 24-72 horas pós-nascimento, foram dosadas as citocinas (IL-1β, IL-6, IL-8, IL-10, IL-12 e TNF-α) por citometria de fluxo. Na comparação entre grupos utilizou-se o Qui-quadrado ou teste Exato de Fisher, ANOVA, e Correlação de Pearson. RESULTADOS: As características maternas foram semelhantes nos 4 grupos. A idade gestacional média foi 34 semanas nos prematuros e 39 semanas nos termos. Os níveis de citocinas do colostro não diferiram entre os grupos de termo e pretermo. O grupo T-PIG apresentou maior quantidade de citocinas comparado aos demais. Nos 4 grupos houve correlação entre as citocinas, especialmente nos T-PIG. CONCLUSÃO: A quantidade de citocinas no colostro foi influenciada pelo crescimento fetal e não pela idade gestacional.
INTRODUCTION: The effect of gestational age and foetal growth in the imunno componentes of human milk is not well stablished. OBJECTIVE: To determine cytokines levels in colostrum according to gestational age and foetal growth. METHOD: Cross-sectional study with mothers of term (T) and preterm (PT) infants, with birth weight appropriate-for-gestational age (AGA) and small-for-gestational age (SGA), born at the Maternity of Botucatu School of Medicine- UNESP, during 2014 -2015. Inclusion criteria were: single gestation; absence of diabetes mellitus; no maternal use of medications or illicit drugs; negative maternal serology; and newborn without malformation. Mothers with mastitis, or use of medication, or failure to obtain colostrum, were excluded. Four groups were studied: PT-SGA (n=18), PT-AGA (n=42), T-SGA (n=45), and T-AGA (control, n=42). Colostrum was collected between 24-72 hours after birth, and cytokines (IL-1β, IL-6, IL-8, IL-10, IL-12 and TNF-α) were measured by flow cytometry. Chi-square or Fisher's exact test, ANOVA and Pearson's correlation were used to evaluate differences among the groups. RESULTS: Maternal characteristics did not differ between groups. The mean gestational age was 34 and 39 weeks for preterm and term groups. Cytokines levels in the colostrum were not different between term and preterm groups. However cytokines levels were significantly higher in colostrum from mothers of T-SGA. A positive correlation between cytokines was found in all groups, especially in T-SGA. CONCLUSION: Cytokines levels in colostrum was influenced by foetal growth, while the correlation between cytokines varied according to gestational age and foetal growth.
INTRODUCTION: The effect of gestational age and foetal growth in the imunno componentes of human milk is not well stablished. OBJECTIVE: To determine cytokines levels in colostrum according to gestational age and foetal growth. METHOD: Cross-sectional study with mothers of term (T) and preterm (PT) infants, with birth weight appropriate-for-gestational age (AGA) and small-for-gestational age (SGA), born at the Maternity of Botucatu School of Medicine- UNESP, during 2014 -2015. Inclusion criteria were: single gestation; absence of diabetes mellitus; no maternal use of medications or illicit drugs; negative maternal serology; and newborn without malformation. Mothers with mastitis, or use of medication, or failure to obtain colostrum, were excluded. Four groups were studied: PT-SGA (n=18), PT-AGA (n=42), T-SGA (n=45), and T-AGA (control, n=42). Colostrum was collected between 24-72 hours after birth, and cytokines (IL-1β, IL-6, IL-8, IL-10, IL-12 and TNF-α) were measured by flow cytometry. Chi-square or Fisher's exact test, ANOVA and Pearson's correlation were used to evaluate differences among the groups. RESULTS: Maternal characteristics did not differ between groups. The mean gestational age was 34 and 39 weeks for preterm and term groups. Cytokines levels in the colostrum were not different between term and preterm groups. However cytokines levels were significantly higher in colostrum from mothers of T-SGA. A positive correlation between cytokines was found in all groups, especially in T-SGA. CONCLUSION: Cytokines levels in colostrum was influenced by foetal growth, while the correlation between cytokines varied according to gestational age and foetal growth.
Descrição
Palavras-chave
Citocinas, Leite materno, Colostro, Prematuro, Retardo do crescimento fetal, Cytokines, Human milk, Colostrum, Infant premature, Fetal growth retardation