Effects of a Moisturizer Containing Colloidal Oatmeal and Filaggrin Technology on Staphylococcus Species In Vitro

Area of Science:

• Dermatology
• Microbiology
• Biotechnology

Background:

• Atopic dermatitis (AD) pathophysiology involves genetic, environmental, and skin microbiome factors.
• Staphylococcus aureus (S. aureus) colonization is linked to AD severity.
• Topical skincare may modulate the skin microbiota for AD management.

Purpose of the Study:

• To evaluate a novel moisturizer's effect on S. aureus and S. epidermidis growth, biofilm formation, and adhesion on reconstructed human epidermis (RHE).
• To determine if the moisturizer shifts the balance between pathogenic S. aureus and commensal S. epidermidis.

Main Methods:

• Utilized reconstructed human epidermis (RHE) models to assess bacterial growth and adhesion.
• Quantified S. aureus and S. epidermidis growth and biofilm formation in the presence and absence of the test moisturizer.
• Analyzed changes in the ratio of S. aureus to S. epidermidis.

Main Results:

• The moisturizer significantly decreased S. aureus growth and adhesion compared to S. epidermidis.
• No significant induction or inhibition of S. aureus biofilm formation was observed.
• The moisturizer promoted a shift in Staphylococcus species, favoring commensal S. epidermidis over pathogenic S. aureus.

Conclusions:

• The tested moisturizer demonstrates potential for managing atopic dermatitis by favorably altering the skin microbiome.
• Shifting the balance from S. aureus to S. epidermidis may offer clinical benefits for individuals with AD.
• This formulation could be a valuable addition to AD skincare regimens.