72025-60-6

Leukotriene C₄ (LTC₄) is the parent cysteinyl leukotriene produced by the LTC₄ synthase catalyzed conjugation of glutathione to LTA₄. LTC₄ is produced by neutrophils, macrophages, mast cells, and by transcellular metabolism in platelets. It is one of the constituents of slow-reacting substance of anaphylaxis (SRS-A) and exhibits potent smooth muscle contracting activity. LTC₄-induced bronchoconstriction and enhanced vascular permeability contribute to the pathogenesis of asthma and acute allergic hypersensitivity. The concentration of LTC₄ required to produce marked contractions of lung parenchymal strips and isolated tracheal rings is about 1 nM.

LTC4 (Leukotriene C4) is a potent agonist for contraction of smooth muscle, wtih many important immunomodulatory functions.

ChEBI: A leukotriene that contains cysteine in their structure.