Whole-body exposure to ultraviolet radiation results in increased serum interleukin-1 activity in humans.
Human volunteers given one minimal erythemal dose of ultraviolet radiation (UVR) from fluorescent sunlamps developed increased serum interleukin-1 (IL-1) activity as assessed by the thymocyte co-stimulator assay. This activity peaked 1 to 4 hours after exposure and returned to baseline by 8 hours after exposure. Six to 12 months later, some of the same subjects had blood samples taken over the same time course but without exposure to UVR; no elevation in serum IL-1 was observed. In addition to lymphocyte activating activity, IL-1 has been reported to have endogenous pyrogen activity, chemotactic activity for neutrophils and mononuclear cells, and inflammatory activity when injected subcutaneously in vivo. Elevations in serum IL-1 activity after exposure to ultraviolet radiation may account for some of the manifestations of the sunburn response.
Granstein
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Sauder
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DN
D000328:Adult; D004307:Dose-Response Relationship, Radiation; D006801:Humans; D007375:Interleukin-1 / Q000097:blood / Q000528:radiation effects*; D008297:Male; D013997:Time Factors; D014466:Ultraviolet Rays; D014916:Whole-Body Irradiation
D007375:Interleukin-1