Commercial hand soaps expected to decrease antimicrobial peptides on human skin

Antimicrobial peptides (AMPs) are crucial components of the skin's innate immune system, forming a primary defense against pathogens. Maintaining adequate AMP levels is vital for skin health and preventing infections. Commercial hand soaps, designed for cleansing, contain surfactants that can disrupt the skin barrier. The potential impact of these common hygiene products on the skin's natural antimicrobial defenses, specifically AMP expression, remains an important area of investigation, as a decrease could compromise skin immunity.

This completed clinical trial (NCT01951352) aimed to test the ability of different commercially available hand soaps to affect the amount of anti-microbial peptides present on the surface of human skin. The study involved healthy participants, who would wash with these soaps. The primary endpoint was to measure the change in anti-microbial peptide expression on the skin surface after washing. The study's hypothesis was based on prior experiments conducted on pig skin, which suggested a decrease in AMP expression post-washing.

The provided abstract describes the study's objective and hypothesis but does not present any results or specific findings from the completed human clinical trial. It states an expectation that the amount of antimicrobial peptide expression will decrease after using different soaps, based on prior experiments conducted on pig skin. No quantitative data, statistical significance, or specific changes in peptide levels from the human study are reported. Therefore, no actual findings from the human study can be extracted from this abstract.