IL-1 By Ivan Suarez Robles 08 Feb, 2011 Abbreviation for interleukin-1, which is a cytokine that is involved with various inflammatory activities. Production of mature IL-1 requires caspase activity.Related Articles: About InflammationMinocyclineGlossary: IL-1 betaGlossary: interleukin-1 (IL-1)Glossary: pro-inflammatory cytokines