Age of Bottle Cessation and BMI-for-Age Percentile among Children Aged Thirty-Six Months Participating in WIC

Evaluation of Streptococcus mutans Biofilm Formation and Acidogenicity of Infant Milk Formulas for Treating Cow Milk Allergy: An in vitro Study

INTRODUCTION

When infants cannot consume breast milk, the most commonly available alternative milk formula is cow milk-based. Due to a rise in the prevalence of cow milk protein allergy (CMPA) among children, this study aimed to assess the biofilm formation and acidogenicity of cow milk-based formulas as well as milk formulas suggested for children with CMPA.

METHODS

Cow milk-based formulas with 0%, 10%, or 18% sucrose added, partially hydrolyzed formula (pHF), extensively hydrolyzed formula (eHF), amino acid-based formula (AAF), and soy-based formulas with 0%, or 11% sucrose added were evaluated. Streptococcus mutans was used as a representative microorganism associated with caries. The acidogenicity after 24-h incubation was assessed by the pH of the formed biofilm and lactic acid formation. Biofilm formation was quantified using crystal violet staining. Additionally, the biofilm characteristics were determined using confocal laser scanning microscopy (CLSM). Comparisons were made among formulas without added sucrose to observe protein-based differences. Furthermore, formulas with different sucrose percentages were compared to explore the impact of sucrose content.

RESULTS

When comparing the formulas without added sucrose, the biofilm formation in the cow milk-based formula and pHF were significantly greater than the soy-based formula, eHF, and AAF. In the presence of S. mutans, all formulas reduced the biofilm pH below the critical enamel pH. The cow milk-based formula and AAF showed a significantly lower biofilm pH than the pHF, soy-based, and eHF groups, while the lactic acid production was markedly higher in the cow milk-based formula, pHF and AAF, compared with the eHF and soy-based formula. Adding sucrose into the cow milk-based and soy-based formulas substantially increased biofilm mass. The biofilm pH of the cow milk-based formulas, with or without sucrose, was significantly lower than that of the soy-based formulas. The CLSM indicated distinct biofilm characteristics among the different protein-based formulas, with sucrose supplementation promoting S. mutans aggregation in cow milk-based formula biofilm and increased density and intact biofilm in the soy-based formula.

CONCLUSION

All assessed milk formulas had caries-inducing factors, including those without supplemental sucrose. Among them, the eHF demonstrated the least caries-inducing factors, attributed to its minimal biofilm formation and the highest biofilm pH.

Trends and associated factors of bottle-feeding in Turkey: dramatic change over the last three decades under the limited implemented code

The study aimed to examine the trends and associated factors of bottle-feeding among children aged 0-35 months. Data covering 11,205 mother-child pairs, from six recent Turkey Demographic and Health Surveys (TDHSs) were analyzed by using complex sample crosstabs and logistic regression. Bottle-feeding was on an upward trend from 33.0% to 51.5% from 1993 to 2013 and fell slightly 47.9% in 2018. Increasing trends of bottle-feeding were found in children aged 6-35 months, the East region, lower wealth index, maternal education under 5 years, Kurdish mothers, and the low antenatal care attendance. Multivariate analysis using data from TDHS-2018 showed that young maternal age, low birth weight and being 6-23 months of age were associated with higher rates of bottle-feeding. The prolonged bottle-feeding became widespread, and the bottle-feeding was common even in 35-month-old children. Interventions by the Government and stakeholders to minimize low rates of bottle-feeding should focus on high-risk groups.