title: Interleukin-8 in Hodgkin's disease. Preferential expression by reactive cells and association with neutrophil density.
abstract: Hodgkin's disease (HD) shows rare neoplastic Hodgkin and Reed-Sternberg cells embedded in an abundant reactive infiltrate containing, among other cell types, neutrophilic granulocytes. Interleukin (IL)-8 is chemotactic for neutrophils. The expression of IL-8 was tested by in situ hybridization with 35S-labeled IL-8-specific RNA probes on 38 cases of HD. Reactive lesions, non-Hodgkin's lymphomas of B and T phenotype, and Langerhans cell histiocytosis served as controls. IL-8 expression was observed in Hodgkin and Reed-Sternberg cells in 3 of 33 cases of classical HD and in reactive cells in 20 of 33 HD cases as evidenced by combined isotopic in situ hybridization and immunohistology for the demonstration of cell-type-characteristic antigens or enzyme histochemistry for chloroacetate esterase. IL-8-positive cells were more numerous in cases of nodular sclerosing HD as compared with the mixed cellularity histotype (P = 0.01). The number of IL-8-positive cells and the density of neutrophils were positively correlated (P < 0. 01). In 5 cases of lymphocyte-predominant HD, IL-8 expression was not displayed. Non-Hodgkin's lymphoma cases contained IL-8 transcripts only in 1 of 23 cases in sparse reactive cells. In 4 of 7 cases of Langerhans cell histiocytosis, IL-8-specific signals were displayed in S100-negative cells. In conclusion, IL-8 expression in HD is largely confined to reactive cells and associated with infiltration by neutrophils. Elaboration of other cytokines by Hodgkin and Reed-Sternberg cells and reactive cells may explain the frequent expression of this cytokine in HD, particularly in the nodular sclerosing type.
authors.affiliation: Institut für Pathologie, Klinikum Benjamin Franklin, Free University of Berlin, Germany.
authors.forename: H D
authors.initials: HD
authors.lastname: Foss
authors.forename: H
authors.initials: H
authors.lastname: Herbst
authors.forename: S
authors.initials: S
authors.lastname: Gottstein
authors.forename: G
authors.initials: G
authors.lastname: Demel
authors.forename: I
authors.initials: I
authors.lastname: Araujó
authors.forename: H
authors.initials: H
authors.lastname: Stein
mesh_terms: D002452:Cell Count; D006646:Histiocytosis, Langerhans-Cell / Q000378:metabolism / Q000473:pathology; D006689:Hodgkin Disease / Q000378:metabolism / Q000473:pathology*; D006801:Humans; D016209:Interleukin-8 / Q000096:biosynthesis* / Q000235:genetics; D008228:Lymphoma, Non-Hodgkin / Q000737:chemistry / Q000473:pathology; D009164:Mycobacterium Infections / Q000378:metabolism / Q000473:pathology; D009504:Neutrophils / Q000473:pathology*; D014066:Palatine Tonsil / Q000737:chemistry / Q000473:pathology
chemical_list: D016209:Interleukin-8