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Ageing significantly impacts the biomechanical function and structural composition of skin
Abigail K Langton1,2, Helen K Graham1,2, Christopher E M Griffiths1,2
1Centre for Dermatology Research, Manchester Academic Health Science Centre, Salford Royal NHS Foundation Trust, The University of Manchester, Manchester, UK.
Intrinsic skin ageing reduces skin resilience and elasticity. Chronic sun exposure severely impairs skin biomechanical function, altering its architecture and appearance.
Area of Science:
- Dermatology and biomechanics of aging skin.
Background:
- Skin aging results from intrinsic aging and extrinsic factors like sun exposure.
- Understanding the biomechanical changes in aging skin is crucial for dermatological research.
Purpose of the Study:
- To investigate the biomechanical consequences of intrinsic and extrinsic skin aging.
- To correlate histological changes with functional decline in aging skin.
Main Methods:
- Non-invasive cutometry and ballistometry were used to assess skin biomechanics.
- Histological examination of skin architecture was performed.
Main Results:
- Intrinsic aging led to significant loss of skin resilience and elasticity.
- Photoaged skin exhibited severe decline in biomechanical properties, including increased fatigue and creep.
- Histological analysis revealed effacement of rete ridges and disorganized elastic fibers in both intrinsic and photoaged skin.
Conclusions:
- Optimal skin biomechanical properties are linked to intact skin architecture.
- Intrinsic aging causes moderate functional decline, while chronic sun exposure leads to extreme alterations in skin biomechanics and structure.
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