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Ultraviolet light-induced changes of lymphatic and blood vasculature in skin and their molecular mechanisms

Mika Sawane1, Kentaro Kajiya

  • 1Shiseido Research Center, Yokohama, Japan.

Experimental Dermatology
|May 26, 2012
PubMed

Insights

Ultraviolet B (UVB) light harms skin by promoting blood vessel growth (angiogenesis) and impairing lymphatic function. Strategies to inhibit UVB-induced angiogenesis and improve lymphatic function may prevent skin photoaging.

Area of Science:

  • Dermatology
  • Vascular Biology
  • Photobiology

Background:

  • Ultraviolet B (UVB) radiation is a known environmental stressor affecting skin.
  • UVB exposure triggers significant alterations in cutaneous microvasculature.
  • Skin aging (photoaging) is a complex process influenced by UVB radiation.

Purpose of the Study:

  • To review the effects of UVB light on skin's blood and lymphatic systems.
  • To elucidate the molecular mechanisms underlying UVB-induced vascular changes.
  • To explore therapeutic strategies for mitigating photoaging by targeting vascular dysfunction.

Main Methods:

  • Literature review focusing on UVB radiation effects on skin vasculature.
  • Analysis of molecular pathways involved in angiogenesis and lymphatic function.
  • Evaluation of potential therapeutic interventions for photoaging.

Main Results:

  • UVB light stimulates angiogenesis, leading to abnormal blood vessel formation in the skin.
  • UVB exposure impairs lymphatic vascular function, contributing to fluid imbalance and inflammation.
  • Specific molecular mediators drive these UVB-induced vascular responses.

Conclusions:

  • UVB-induced angiogenesis and lymphatic dysfunction are key contributors to skin photoaging.
  • Targeting angiogenesis and lymphatic function presents a promising therapeutic avenue.
  • Inhibiting UVB-induced angiogenesis and/or promoting lymphatic function may prevent or reverse skin aging.

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