Ultraviolet radiation as a double-edged regulator of melanocyte function in vitiligo therapy and melanoma carcinogenesis.
Level 5 - mechanism / opinion, no new human data
Narrative review discussing biological mechanisms without original empirical human data.
PubMed 42305972 · doi:10.3389/fmed.2026.1823921
What was done
This narrative review synthesized the dual biological mechanisms of ultraviolet radiation (UVR)—specifically narrowband UVB and excimer-based phototherapy—on melanocyte biology, vitiligo repigmentation, and melanoma carcinogenesis, while examining emerging combination strategies such as JAK inhibitors, platelet-rich plasma, and cellular grafting.
What was found
The abstract reports no quantitative metrics or numerical data. It notes that UVR concurrently drives melanocyte maturation, proliferation, and melanin synthesis, while potentially inducing oxidative stress, DNA damage, apoptosis, genomic instability, and skin barrier impairment.
Why it matters
Elucidating the mechanistic balance between therapeutic repigmentation and carcinogenic risk helps refine phototherapy protocols and justifies combining phototherapy with targeted systemic or cellular therapies.
Limits
As a narrative review, it lacks a systematic search methodology, meta-analytic pooling, and primary clinical trial data in the abstract. No quantitative effect sizes, patient counts, or comparative safety risk estimates are provided.
Cited by
- supports Ultraviolet (UV) radiation causes DNA damage in the skin and is a risk factor for melanoma.