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Is vitiligo associated with systemic aquaporin-3 deficiency?
Laxmisha Chandrashekar1, Medha Rajappa2, Kalai Selvi Rajendiran3
1Department of Dermatology, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India.
Postepy Dermatologii I Alergologii
|August 19, 2021
Summary
Vitiligo patients show lower aquaporin-3 (AQP3) and antioxidant levels, with increased oxidative stress. Reduced AQP3 correlates with disease severity, suggesting therapeutic potential for this vitiligo marker.
Area of Science:
- Dermatology
- Molecular Biology
- Biochemistry
Background:
- Recent research highlights keratinocyte abnormalities impacting melanocytes in vitiligo pathogenesis.
- Aquaporin-3 (AQP3) is linked to keratinocyte apoptosis via the PI3K/AKT pathway and E-cadherin-catenin complex.
Purpose of the Study:
- To evaluate skin and blood AQP3 levels in non-segmental vitiligo patients versus controls.
- To correlate AQP3 levels with oxidative stress markers (MDA, TAS) and disease activity.
Main Methods:
- Cross-sectional study involving 36 non-segmental vitiligo patients and 36 controls.
- Assay of AQP3, malondialdehyde (MDA), and total antioxidant status (TAS) in skin and blood samples.
Main Results:
- Patients with non-segmental vitiligo exhibited lower skin and plasma AQP3 and TAS, with elevated MDA levels compared to controls.
- Skin and plasma AQP3 levels negatively correlated with disease activity.
- Local and systemic AQP3 deficiency was associated with local and systemic oxidative stress.
Conclusions:
- Vitiligo is characterized by systemic and local AQP3 deficiency.
- This deficiency correlates with disease severity and oxidative stress.
- Findings suggest potential therapeutic implications for AQP3 in vitiligo management.
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