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Urocanic acid and immunosuppression.

M Norval, T J Simpson, J A Ross

Photochemistry and Photobiology

|August 1, 1989

Summary

This summary is machine-generated.

Cis-urocanic acid, a UV-light photoreceptor, may cause UV-induced immunosuppression by generating suppressor T cells. This review examines evidence for urocanic acid

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Area of Science:

Immunology
Photobiology
Dermatology

Background:

Urocanic acid is abundant in the skin's stratum corneum.
It functions as a photoreceptor, isomerizing from trans- to cis-urocanic acid upon UV exposure.

Purpose of the Study:

To review evidence supporting the hypothesis that cis-urocanic acid mediates UV-induced immunosuppression.
To discuss potential mechanisms of urocanic acid's interaction with immune cells.

Main Methods:

Literature review and synthesis of existing evidence.
Discussion of proposed molecular interactions between urocanic acid and immune cells.

Main Results:

UV irradiation causes isomerization of urocanic acid to its cis-form.

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Cis-urocanic acid is proposed to induce suppressor T cells, leading to immunosuppression.

Conclusions:

Cis-urocanic acid is a potential mediator of UV-induced immune suppression.
Further research is needed to elucidate the precise interactions and outcomes.