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The Role of Chemokines in Cutaneous Allergic Inflammation

Abstract Eosinophils are the major effector cells that kill helminthic parasites and are–for unknown reasons–present in the dermal part of atopic skin. This review summarizes our knowledge on the chemotactic factors involved in eosinophil tissue recruitment, focusing on the role of eosinophil-chemotactic chemokines. It is the current view that the chemokines RANTES and eotaxin represent the most important eosinophil-attracting chemokines. The inducibility of eotaxin in dermal fibroblasts only upon stimulation with Th2-cytokines IL-4 and IL-13 may explain why eosinophils appear only in the dermis and why the presence of Th2-cytokines is always linked with tissue eosinophilia.