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Oral Centella asiatica Extract Attenuates UVB-Induced Skin Photoaging via Antioxidant, Anti-Inflammatory, and Extracellular Matrix-Preserving Effects in Hairless Mice
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Oral Centella asiatica Extract Attenuates UVB-Induced Skin Photoaging via Antioxidant, Anti-Inflammatory, and Extracellular Matrix-Preserving Effects in Hairless Mice
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Journal Article
Oral Centella asiatica Extract Attenuates UVB-Induced Skin Photoaging via Antioxidant, Anti-Inflammatory, and Extracellular Matrix-Preserving Effects in Hairless Mice
2025
Overview
Centella asiatica exhibits antioxidant, anti-inflammatory, and dermal-regenerative activities, yet the in vivo efficacy of an orally administered, dose-standardized extract against ultraviolet B (UVB)-induced photoaging has not been fully elucidated. This study investigated the protective effects of a chemically standardized C. asiatica extract (sCAE; 70 mg/g asiaticoside) in UVB-irradiated Skh:HR-1 hairless mice. Animals received oral sCAE (40 or 80 mg/kg/day) for eight weeks during repeated UVB exposure. Comprehensive assessments—including skin biophysical measurements, histological analysis, ELISA, and gene expression profiling—were performed to characterize dose-dependent responses. sCAE significantly reduced wrinkle formation, transepidermal water loss, malondialdehyde accumulation, and pro-inflammatory cytokines, while enhancing skin hydration, elasticity, antioxidant enzyme activities, and collagen expression. It also restored hyaluronic acid, ceramide, and their biosynthetic genes, and suppressed matrix metalloproteinase-1 and -9. Notably, the higher dose (80 mg/kg) consistently shifted key parameters toward normal levels, demonstrating a clear dose–response effect. These findings provide the first integrative in vivo evidence that orally administered, asiaticoside-standardized C. asiatica extract mitigates UVB-induced photoaging by concurrently improving barrier lipids, extracellular matrix integrity, inflammation, and oxidative stress, supporting its potential as a nutricosmetic agent for skin health.
Publisher
MDPI AG,Multidisciplinary Digital Publishing Institute (MDPI)
Subject
/ Analysis
/ Animals
/ Anti-Inflammatory Agents - administration & dosage
/ Anti-Inflammatory Agents - pharmacology
/ Antioxidants - administration & dosage
/ Collagen
/ Extracellular Matrix - drug effects
/ Extracellular Matrix - metabolism
/ Genes
/ Lipids
/ Mice
/ Plant Extracts - administration & dosage
/ Plant Extracts - pharmacology
/ Skin
/ Skin Aging - radiation effects
