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Objectives: Evaluate the protective factors associated with early initiation of breastfeeding. Methods: Cross-sectional study conducted with Brazilian nursing mothers. Breastfeeding in the first hour of life and difficulty initiating breastfeeding in the birth room were adopted as outcome variables and associated with other maternal and child information. Poisson regression was conducted to synthesize the data. Results: Among 104 nursing mothers evaluated, 56.7% reported breastfeeding in the first hour of life and 43% had difficulty initiating breastfeeding in the birth room. There was a higher prevalence of breastfeeding in the first hour of life among mothers with previous breastfeeding experience (PR = 1.47, 95% CI 1.04-2.07). Difficulty initiating breastfeeding in the birth room was more prevalent among mothers who did not receive breastfeeding guidance during antenatal care (PR = 2.83, 95% CI 1.43-4.32) and those without previous breastfeeding experience (PR = 2.49, 95% CI 1.24-6.45). Conclusion: These findings highlight the importance of adequate professional guidance, especially for primiparous mothers.

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Breast milk is considered a complete food for babies. Up to 7 days postpartum, it is known as colostrum, rich in immunological compounds, responsible for providing nutrition and ensuring immune protection. However, some maternal factors, such as gestational diabetes mellitus (GDM), can change the concentration of bioactive compounds present in the colostrum and may affect the development of the newborn's immune system. The effect of GDM on colostrum cytokine, chemokine, and growth factors is not well described. Thus, the present study evaluated whether the occurrence of GDM changes the concentration of biomarkers in the colostrum. A cross-sectional study was carried out on postpartum women who had healthy pregnancies and women who had been diagnosed with GDM. A sample of colostrum was collected for Luminex analysis. Our results showed that GDM mothers had higher secretion of cytokines and chemokines in the colostrum, with a higher concentration of IFN-g, IL-6, and IL-15, and a lower concentration of IL-1ra. Among growth factors, we identified a decreased concentration of GM-CSF in the colostrum of GDM mothers. Thus, the data obtained support the idea that the disease leads to immune alterations in the colostrum.

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BACKGROUND: Dietary patterns can influence maternal and child health outcomes. The study aims to characterize dietary patterns during pregnancy as well as to identify their associations with gestational weight gain (GWG) and anthropometric measurements at birth. METHODS: A minimum sample size of 95 nursing mothers was estimated for this work. Socioeconomic, anthropometric, physical activity, obstetric and food consumption (food frequency questionnaire) data was collected from mothers and their newborns in immediate postpartum (n = 260) at the maternity hospital. Maternal pregestational weight and GWG were self-reported and the neonatal data was obtained from their records. The patterns were derived posteriori by Principal Component Analysis (PCA). Multinomial Logistic Regression and Poisson Regression with Robust Variance were applied. FINDINGS: Four dietary patterns were derived: "pattern 1", characterized by the consumption of meat and eggs, processed meat, vegetables and olive oil; "pattern 2", consisting of sweets, snacks and cookies; "pattern 3", which includes cereals and breads, coffee and tea, and processed fats; and "pattern 4", characterized by soft drinks, tubers and instant noodles. Together, the dietary patterns account for 49.16% of the total variance for food intake. Higher adherence to "pattern 3" was associated with inadequate birth weight (low and excessive birth weight); while greater adherence to "pattern 2" was associated with lower chances of inadequate GWG. CONCLUSION: The dietary patterns presented mixed composition and predominance of ultra-processed foods. They were associated with the investigated outcomes, denoting the importance of strategies to promote healthy eating habits during pregnancy in order to avoid possible complications.

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BACKGROUND AND OBJECTIVE: Maternal food intake during pregnancy can substantially interfere in the baby's anthropometric measurements at birth. Our objective was to perform a systematic review that investigate the influence of nutrient intake via food during pregnancy on the baby's anthropometric measurements at birth. METHODS: A search was performed without time limits on CINAHL, Embase, PubMed, Scopus and Web of Science databases and manual on studies references. All nutrients and baby's anthropometric measurements at birth were included as descriptors. RESULTS: Thirty articles were included, the majority of prospective cohort studies, with 15.39 (2.36) quality points (maximum value: 22). Thirty-six results of associations were found, of which 17 studies had direct associations between nutrient intake and birth outcomes. Inverse associations were identified in 8 studies and 11 articles showed no significant associations in all analyses. Maternal food intake of vitamin C, calcium and magnesium during pregnancy seems to have a positive influence on the baby's birth weight, while carbohydrates intake have an inverse association with the same outcome. CONCLUSION: It is suggested that vitamin C, calcium, magnesium and carbohydrates influence on baby's birth weight. So, these specific nutrients need more attention to the consumption, in addition to carried out new studies, with robust methodologies for measuring maternal food consumption and considering the several factors that can interfere in this assessment. REGISTRATION: This review has been registered to the PROSPERO (International prospective register of systematic reviews) (ID: CRD42020167889).

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Abstract Objectives: to perform a systematic review of studies that investigated the influence of ultra-processed foods (UPF) consumption during pregnancy on child's anthropometric parameters up to one year of life. Methods: cohort and cross-sectional studies were researched in BVS, Cinahl, Cochrane, Embase, Pubmed, Scopus and Web of Science databases until March 2020, and the main descriptors were: "Pregnant Women", "Ultra-processed foods", "Birth Weight", "Smallfor Gestational Age", "Infant", "Newborn". Results: seventeen articles were considered eligible and evaluated the associations between the exposures: ultra-processed dietary patterns; soft drinks, sugar-sweetened beverages, artificially sweetened beverages; fast food, junk food, sweets, snacks and the outcomes: birth weight and its classifications; length and head circumference at birth; birth weight adjustments according to gestational age; weight/age, length/age, body mass index/age and weight/length indices. The results showed: 36 non-significant associations between the exposures and the outcomes; 13 direct associations (outcomes versus ultraprocessed dietary patterns, soft drinks, artificially sweetened beverages, sweets, junk food) and 5 inverse associations (outcomes versus ultra-processed dietary patterns, soft drinks). Conclusions: most of the evaluated literature did not demonstrate the influence of UPF consumption during pregnancy on the newborn's anthropometric measurements up to one year of life and denoted a smaller number of direct and inverse associations between the exposures and the outcomes.

Resumo Objetivos: realizar uma revisão sistemática de estudos que investigaram a influência do consumo de alimentos ultraprocessados (AUP) na gestação nas medidas antropométricas do recém-nascido até um ano de idade. Métodos: foram pesquisados estudos de coorte e transversais nas bases BVS, Cinahl, Cochrane, Embase, Pubmed, Scopus e Web of Science até março de 2020, tendo como principais descritores: "Pregnant women", "Ultra-processed foods", "Birth weight", "Small for Gestational Age", "Infant", "Newborn". Resultados: dezessete artigos foram considerados elegíveis e avaliaram as associações entre as exposições: padrões alimentares ultraprocessados; refrigerantes, sugar-sweetened beverages ou artificially sweetened beverages; fastfood, junkfood, doces e snacks e os desfe-chos:peso ao nascer e suas classificações; comprimento e perímetro cefálico ao nascimento; adequações do peso ao nascer segundo idade gestacional; e índices peso/idade, compri-mento/idade, índice de massa corporal/idade e peso/comprimento. Foram encontradas: 36 associações nulas entre exposições e desfechos avaliados; 13 diretas (desfechos versus padrões alimentares ultraprocessados, refrigerantes, artificially sweetened beverages, doces e junkfood) e 5 inversas (desfechos versus padrões alimentares ultraprocessados e refrigerantes). Conclusões: a maioria da literatura avaliada não demonstrou influência do consumo de AUP na gestação nas medidas antropométricas do recém-nascido até um ano de vida e apontou um menor número de associações diretas e inversas entre as exposições e os desfechos analisados.

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