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Partially Hydrolysed Whey-Based Infant Formula Improves Skin Barrier Function
Sébastien Holvoet1, Sophie Nutten1, Lénaïck Dupuis2
1Department of Gastrointestinal Health, Nestlé Institute of Health Sciences, Nestlé Research, Société des Produits Nestlé S.A., Vers-chez-les-Blanc, 1000 Lausanne, Switzerland.
Insights
Partially hydrolysed whey-based infant formula (pHF-W) may improve infant skin barrier function. This study found pHF-W reduced transepidermal water loss and improved skin hydration markers in mice and human cells.
Area of Science:
- Immunology
- Dermatology
- Nutrition Science
Background:
- Atopic dermatitis (AD) risk in infants is linked to milk allergy and impaired skin barrier function.
- Partially hydrolysed whey-based infant formulas (pHF-W) have demonstrated potential in reducing AD risk.
- The specific impact of pHF-W on skin barrier integrity requires further investigation.
Purpose of the Study:
- To investigate the efficacy of oral pHF-W supplementation in enhancing skin barrier function.
- To assess the effects of pHF-W on transepidermal water loss (TEWL) and immune responses.
- To explore the molecular mechanisms underlying pHF-W's impact on skin barrier genes.
Main Methods:
- Neonatal mice were supplemented with pHF-W and exposed epicutaneously to Aspergillus fumigatus.
- Transepidermal water loss (TEWL) and total and specific IgE antibody levels were measured.
- Human primary keratinocytes were stimulated in vitro to analyze skin barrier gene expression, including Aquaporin-3.
Main Results:
- pHF-W supplementation significantly reduced TEWL and total IgE in mice.
- Whey hydrolysate alone was sufficient to decrease TEWL and total IgE.
- Aquaporin-3 gene expression, crucial for skin hydration, was modulated by pHF-W in both mice and human keratinocytes.
Conclusions:
- Oral pHF-W supplementation may improve skin barrier function by reducing TEWL and modulating hydration-related genes.
- Enhanced skin barrier function represents a potential mechanism through which pHF-W could lower AD risk in infants.
- Further clinical trials in humans are necessary to validate these findings and confirm the efficacy of pHF-W for AD prevention.
Abstract:
Specific partially hydrolysed whey-based infant formulas (pHF-W) have been shown to decrease the risk of atopic dermatitis (AD) in infants. Historically, AD has been associated primarily with milk allergy; however, defective skin barrier function can be a primary cause of AD. We aimed to ascertain whether oral supplementation with pHF-W can improve skin barrier function. The effect of pHF-W was assessed on transepidermal water loss (TEWL) and antibody productions in mice epicutaneously exposed to Aspergillus fumigatus. Human primary keratinocytes were stimulated in vitro, and the expression of genes related to skin barrier function was measured. Supplementation with pHF-W in neonatal mice led to a significant decrease in TEWL and total IgE, but not in allergen-specific antibody levels. The whey hydrolysate was sufficient to decrease both TEWL and total IgE. Aquaporin-3 gene expression, linked with skin hydration, was modulated in the skin of mice and human primary keratinocytes following protein hydrolysate exposure. Skin barrier improvement may be an additional mechanism by which pHF-W may potentially reduce the risk of AD development in infants. Further human studies are warranted to confirm the clinical efficacy of these observations.
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