interleukin-1 alpha, Hematopoietin 1, IL 1 alpha, IL1 alpha, IL 1, IL 1A, Il-1a, IL1, IL1A, IL1F1, ilia, Interleukin 1 alpha, Interleukin 1 alpha precursor, Interleukin1 alpha, Preinterleukin 1 alpha, Pro interleukin 1 alpha, Prointerleukin 1 alpha,
Produced by activated macrophages, IL-1 stimulates thymocyte proliferation by inducing IL-2 release, B-cell maturation and proliferation, and fibroblast growth factor activity. IL-1 proteins are involved in the inflammatory response, being identified as endogenous pyrogens, and are reported to stimulate the release of prostaglandin and collagenase from synovial cells.
