The correlations between gut microbiota of Muslim Thai lactating women and their dietary intake and gut microbiota of breastfed infants

@#Introduction: Foods and nutrients are essential not only for human health, but also for the balance of gut microbiota. This research aimed to correlate the gut microbiota of lactating women with their food/ nutrient intakes, as well as with their infants’ gut microbiota. Methods: A cross-sectional study was conducted in 27 pairs of mothers and their exclusively breastfed infants. For lactating women, the dietary assessment was conducted by 24-hour recall, and food groups were assessed following the Food and Agriculture Organization’s guidelines, while nutrient intake was analysed using INMUNCAL V3 programme. Gut microbiota of mothers and infants were measured in stool samples using fluorescent in situ hybridisation technique. Results: It was found that energy intake of mothers was only 66% of the recommended Thai Dietary Reference Intakes (DRIs). Most micronutrient and dietary fibre intakes were below the Thai DRIs. Vitamin A (VA)-rich fruits and vegetables food group correlated positively with Lactobacillus species (spp). The association between gut microbiota and nutrient intake of lactating women showed that total protein, phosphorus, and VA were positively correlated with Bifidobacterium spp.; while β-carotene and vitamin C were also positively correlated with Lactobacillus spp. In contrast, consumption of eggs and calcium correlated negatively with Clostridium spp./ Enterobacter spp. Bifidobacterium spp. and Lactobacillus spp. of lactating women and breastfed infants showed strong correlations. Conclusion: Food and nutrient intakes of lactating women were correlated with their Clostridium spp./Enterobacter spp., Bifidobacterium spp. and Lactobacillus spp. Furthermore, Bifidobacterium spp. and Lactobacillus spp. of mothers and breastfed infants showed strong correlations.

Prevalence of vitamin D deficiency in exclusively breastfed infants at a tertiary healthcare facility in Nairobi, Kenya

ABSTRACT Objective: To determine the prevalence of vitamin D deficiency (VDD) in exclusively breastfed infants at the Aga Khan University Hospital Nairobi, Kenya (AKUHN). The relationships between 25-hydroxyvitamin D; 25OHD, parathyroid hormone (PTH), maternal vitamin D supplementation, and sunlight exposure were also determined. Subjects and methods: Blood from 98 infants was assayed for 25OHD, calcium, phosphate, and PTH. Socio-demographic and clinical characteristics were analyzed using descriptive statistics and inferential analysis (p < 0.05). Results: The prevalence of VDD (25OHD <12 ng/mL), vitamin D insufficiency (VDI, 25OHD 12-20 ng/mL) and vitamin D sufficiency (VDS, 25OHD >20 ng/mL) was 11.2% (95% CI 8.0%-14.4%), 12.2% (95% CI 8.9%-15.5%), and 76.5% (95% CI 72.3%-80.8%) respectively. There was no difference in the mean age, head circumference, length, or weight of infants in VDD, VDI, and VDS groups. PTH was elevated when 25OHD was <12 ng/mL and normal when 25OHD was between 12-20 ng/mL. 25OHD and PTH were normal in infants whose mothers received vitamin D supplements. Infants who received <30 minutes/day of exposure to sunlight were 5 times more likely to have VDI than infants who received ≥30 minutes/day (p = 0.042). Conclusions: The prevalence of VDD in exclusively breastfed infants at AKUHN is low. The current national policy that recommends exclusive breastfeeding of infants in the first 6 months of life appears to be effective in staving off vitamin D deficiency but those infants with < 30 minutes sunlight exposure may benefit from low dose supplemental vitamin D during times of low sunlight exposure.

Padrões de aleitamento materno exclusivo e internação por diarréia entre 1999 e 2008 em capitais brasileiras / Exclusive breastfeeding and diarrhea hospitalization patterns between 1999 and 2008 in Brazilian State Capitals

A prevalência do aleitamento materno tem aumentado nas duas últimas décadas como resultado das políticas públicas de incentivo a esta prática. Trata-se de estudo epidemiológico ecológico, com base em dados secundários das Capitais Brasileiras e Distrito Federal. As prevalências de aleitamento materno, a população de nascidos vivos e os casos de internação hospitalar por diarreias foram comparados entre os anos de 1999 e 2008. Foi utilizado o teste não-paramétrico de Spearman para correlacionar as variáveis. Foram estudados 1.329.618 nascidos vivos no período. O aumento da prevalência de aleitamento materno exclusivo em crianças com menos de 4 meses de vida teve correlação negativa com as taxas de internação por diarreias (r = -0,483, p = 0,014), sendo essa correlação mais forte para meninas (r = -0,521, p = 0,016) que para os meninos (r = -0,476, p = 0,008). O aumento da prevalência de aleitamento materno exclusivo entre 1999 e 2008 parece estar correlacionado com a diminuição das taxas de internação hospitalar por diarreias no mesmo período, corroborando a importância das políticas públicas de promoção, proteção e apoio do aleitamento materno.

The prevalence of breastfeeding has increased over the past two decades in Brazil, as a result of public breastfeeding policies. The scope of this paper is to analyze the correlation between the increase in the prevalence of breastfeeding and hospitalization rates due to diarrhea. It is an epidemiological ecological study, based on secondary data from Brazilian Capital Cities and the Federal District. The prevalence of breastfeeding, the number of live births, and cases of hospitalization due to diarrhea were compared for the years 1999 and 2008 and the Spearman non-parametric test was used to correlate the variables. During the period, 1,329,618 children under one year of age in 1999 and 2008 were studied. The increase in the prevalence of exclusive breastfeeding among children under 4 months old had a negative correlation with hospitalization rates due to diarrhea (Rho=-0.483, p=0.014). This correlation was stronger for girls (Rho=-0.521, p=0.008) than for boys (Rho=-0.476, p=0.016). The increase in the prevalence of breastfeeding between 1999 and 2008 appears to be correlated to a reduction in hospitalization rates due to diarrhea over the same period, corroborating the importance of public policies to protect, support and promote breastfeeding.