title: Interleukin-1 receptor type 1 is essential for control of cerebral but not systemic listeriosis.
abstract: Listeria monocytogenes may infect the central nervous system and several peripheral organs. To explore the function of IL-1 receptor type 1 (IL-1R1) in cerebral versus systemic listeriosis, IL-1R1(-/-) and wild-type mice were infected either intracerebrally or intraperitoneally with L. monocytogenes. After intracerebral infection with various numbers of attenuated Listeria, IL-1R1(-/-) mice succumbed due to an insufficient control of intracerebral Listeria, whereas all wild-type mice survived, efficiently restricting growth of Listeria. IL-1R1(-/-) mice recruited increased numbers of leukocytes, especially granulocytes, to the brain compared with wild-type mice. In contrast, both IL-1R1(-/-) and wild-type mice survived a primary and secondary intraperitoneal infection with Listeria without differences in the hepatic bacterial load. In addition, both strains developed similar frequencies of Listeria-specific CD4 and CD8 T cells after primary and secondary intraperitoneal infection. However, an intraperitoneal immunization before intracerebral challenge infection neither protected IL-1R1(-/-) mice from death nor reduced the intracerebral bacterial load, although numbers of intracerebral Listeria-specific CD4 and CD8 T cells and levels of inducible nitric oxide synthase, tumor necrosis factor, and interferon-gamma mRNA were identical in IL-1R1(-/-) and wild-type mice. Collectively, these findings illustrate a crucial role of IL-1R1 in cerebral but not systemic listeriosis.
authors.affiliation: Abteilung für Neuropathologie, Universität zu Köln, Köln, Germany.
authors.forename: Martina
authors.initials: M
authors.lastname: Deckert
authors.forename: Simona
authors.initials: S
authors.lastname: Virna
authors.forename: Monika
authors.initials: M
authors.lastname: Sakowicz-Burkiewicz
authors.forename: Sonja
authors.initials: S
authors.lastname: Lütjen
authors.forename: Sabine
authors.initials: S
authors.lastname: Soltek
authors.forename: Horst
authors.initials: H
authors.lastname: Bluethmann
authors.forename: Dirk
authors.initials: D
authors.lastname: Schlüter
mesh_terms: D000818:Animals; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology; D018414:CD8-Positive T-Lymphocytes / Q000276:immunology; D016207:Cytokines / Q000032:analysis / Q000378:metabolism; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D005434:Flow Cytometry; D053582:Interleukin-1alpha / Q000032:analysis / Q000378:metabolism; D053583:Interleukin-1beta / Q000032:analysis / Q000378:metabolism; D008088:Listeriosis / Q000276:immunology* / Q000378:metabolism* / Q000473:pathology; D008297:Male; D008584:Meningitis, Listeria / Q000276:immunology* / Q000378:metabolism* / Q000473:pathology; D051379:Mice; D008817:Mice, Mutant Strains; D012333:RNA, Messenger / Q000032:analysis; D053573:Receptors, Interleukin-1 Type I / Q000378:metabolism*; D020133:Reverse Transcriptase Polymerase Chain Reaction
chemical_list: D016207:Cytokines; D053582:Interleukin-1alpha; D053583:Interleukin-1beta; D012333:RNA, Messenger; D053573:Receptors, Interleukin-1 Type I