Resistin in Urine and Breast Milk: Relation to Type of Feeding and Anthropometry at 1-Month
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Published on: December 16, 2015
Irena Santosa1, Hiromichi Shoji1, Kentaro Awata1
1Department of Pediatrics and Adolescent Medicine, Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan.
Insights
This study found no significant difference in urinary resistin levels among infants fed breast milk, formula, or a mix. Resistin levels in urine or breast milk did not correlate with infant growth or maternal factors.
Area of Science:
- Human Physiology
- Pediatric Nutrition
- Endocrinology
Background:
- Breast milk contains adipokines (resistin, leptin) linked to protection against obesity and insulin resistance.
- Understanding infant adipokine profiles and feeding types is crucial for early life health.
- Pilot studies are essential for exploring novel correlations in infant metabolism.
Purpose of the Study:
- To investigate the relationship between resistin levels, infant feeding types (breast milk vs. formula), and anthropometric parameters.
- To analyze resistin concentrations in infant urine and maternal breast milk.
- To explore correlations between resistin, leptin, and infant growth markers.
Main Methods:
- Pilot study involving 32 healthy 1-month-old term infants and their mothers.
- Categorization into breastfed, breast milk-dominant mix-fed, and formula-dominant mix-fed groups.
- Analysis of urinary resistin, breast milk resistin, and breast milk leptin using ELISA kits.
Main Results:
- No significant differences in urinary resistin levels were observed across the three feeding groups.
- No correlation found between urinary resistin and breast milk resistin levels in the breastfed group.
- No significant correlations between resistin levels (urine or breast milk) and infant weight, weight gain, or maternal factors (BMI, age, weight).
Conclusions:
- Infant feeding type (breast milk or formula) does not appear to influence urinary resistin levels in early infancy.
- Resistin levels, whether in urine or breast milk, do not seem to impact infant growth during the first month of life.
- Further research is needed to fully elucidate the role of adipokines in infant development and metabolic health.
Abstract:
Breast milk contains adipokines such as resistin and leptin and is known for its protective effect against obesity and insulin resistance. This pilot study aims to evaluate the correlation between resistin levels, feeding types (breast milk and formula), and anthropometric parameters in healthy 1-month-old term infants. Urine and breast milk samples were collected from 32 infants and their mothers at 1 month postpartum. Twelve infants were included in the breastfed group, while thirteen infants comprised the breastfed-dominant mix-fed group, and seven infants the formula-dominant mix-fed group. Using ELISA kits, we analyzed resistin levels in the infants' urine and the mothers' breast milk, and leptin levels in breast milk. Urinary resistin levels among the three groups were not significantly different. There was no correlation between the following: urinary resistin levels in the breastfed group with resistin levels in breast milk; resistin levels in urine with infant's body weight and weight gain; resistin levels in breast milk with weight, age, and BMI of mothers and leptin levels in breast milk. This study suggests that the type of feeding does not affect resistin levels in term infants and resistin level does not affect growth in early infancy.
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