In this laboratory study, researchers developed and tested two in vitro models to simulate atopic dermatitis using HaCaT cells, finding that azithromycin displayed epithelial-strengthening properties in one model, potentially offering insights for future research on skin disease interventions.
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January 2023 in “PubMed” In this study, Urtica dioica extract was found to significantly downregulate 5-alpha-reductase type II gene expression in skin cells, suggesting potential usefulness against androgenic skin diseases.
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March 2019 in “Nutrients” This study found that Rumex japonicus extract may help reduce symptoms of atopic dermatitis by inhibiting inflammatory responses in both cell cultures and a mouse model.
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February 2017 in “Biomolecules & Therapeutics” The authors reported that 4-O-methylhonokiol decreased TGF-β1-induced cell cycle arrest and oxidative stress markers in human keratinocyte cells, suggesting a potential protective role in TGF-β1-mediated cell cycle regulation.
April 2026 in “Clinical Cosmetic and Investigational Dermatology” In this study, exposure to Myrtus communis leaf extract significantly reduced IL-1α expression and increased VEGF expression in human keratinocytes, which may relate to its traditional use for hair loss and wound healing; further research is necessary to understand its mechanisms.