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Target intelligence / Profile preview
Ultraviolet B Light Exposure (NB-UVB)
- Target
- NB-UVB
- Molecular classification
- Electromagnetic radiation, Physical agent
01
Overview
Ultraviolet B (UVB) light exposure, particularly narrowband UVB (NB-UVB), is a form of electromagnetic radiation used therapeutically. It primarily affects the epidermis, leading to DNA damage, trans-urocanic acid isomerization, and cell membrane alterations. NB-UVB induces immunosuppression by reducing pro-inflammatory cytokines and inhibiting antigen presentation. It stimulates vitamin D production. Overexposure carries risks of sunburn, increased skin cancer risk, and premature aging, but therapeutic protocols are designed to minimize these risks. It is used to treat psoriasis, vitiligo and atopic dermatitis.
- Other names
- UVBNarrowband UVB311 nm UVB313 nm UVB
02
Mechanism of action
Immunosuppression via cytokine modulation and inhibition of antigen presentation; DNA damage leading to repair/apoptosis; Vitamin D synthesis stimulation.
03
Biological functions
Vitamin D synthesisImmunosuppressionDNA damageMelanin productionEpidermal thickening
04
Disease associations
PsoriasisVitiligoAtopic dermatitisSkin cancer (risk factor)Premature aging (risk factor)
05
Safety considerations
SunburnIncreased risk of melanoma and non-melanoma skin cancersPremature agingDNA damage
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