D-limonene attenuates D-galactose-induced skin aging mouse model

Area of Science:

• Dermatology and Aging Research
• Natural Product Chemistry
• Oxidative Stress and Inflammation Studies

Background:

• Skin aging is characterized by oxidative stress and inflammation.
• D-limonene, a natural monoterpene, exhibits antioxidant and anti-inflammatory properties.
• Understanding D-limonene's role in mitigating skin aging is crucial.

Purpose of the Study:

• To investigate the anti-aging and skin-rejuvenating potential of D-limonene.
• To evaluate D-limonene's effects in a D-galactose-induced mouse skin aging model.
• To compare the protective and therapeutic effects of D-limonene.

Main Methods:

• 60 male mice were divided into six groups, including control, D-galactose-induced aging, vitamin C, and D-limonene treatments.
• D-limonene and vitamin C were administered concurrently with or after D-galactose induction.
• Key markers of oxidative stress (MDA), antioxidant capacity (SOD, GPx), pro-inflammatory cytokines (TNF-α, IL-1β, IL-6), and collagen synthesis were assessed.

Main Results:

• D-limonene treatment significantly reduced oxidative stress markers and pro-inflammatory cytokines.
• Antioxidant enzyme activity and collagen synthesis (types I and III) were enhanced by D-limonene.
• Skin thickness and histomorphological scores improved, indicating restored skin architecture.

Conclusions:

• D-limonene demonstrates potent anti-aging and skin-rejuvenating effects.
• It acts by modulating oxidation and inflammatory pathways in the skin.
• D-limonene holds potential as both a preventive and curative agent for skin aging.