Leukotrienes are biologically active metabolites derived from arachidonic acid playing an important role in inflammatory responses. There are two main groups of leukotrienes: dihydroxy-leukotrienes (LTB4) and cysteinyl-leukotrienes (LTC4, LTD4, LTE4). By activating specific G-protein coupled receptors, leukotrienes take part in immune responses, like activation and chemotaxis of leukocytes. Several studies have shown that leukotrienes may play a significant role in pathomechanisms of inflammatory diseases of human airways, skin, digestive tract and heart.
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