Interleukin-1 alpha (Hematopoietin-1, Lymphocyte-activating factor (LAF), Endogenous Pyrogen (EP), Leukocyte Endogenous Mediator (LEM), Mononuclear Cell Factor (MCF), Interleukin-1α)

IL-1α is predominantly a cell-associated, non-secreted proinflammatory cytokine. It is produced in a variety of cells including monocytes, tissue macrophages, keratinocytes and other epithelial cells. High levels of IL-1α are associated with sepsis, rheumatoid arthritis, inflammatory bowel disease, acute and chronic myelogenous leukemia, insulin-dependent diabetes mellitus, and atherosclerosis.