title: Primary role for CD4(+) T lymphocytes in recovery from oropharyngeal candidiasis.
abstract: Oropharyngeal candidiasis is associated with defects in cell-mediated immunity and is commonly seen in human immunodeficiency virus positive individuals and AIDS patients. A model for oral candidiasis in T-cell-deficient BALB/c and CBA/CaH nu/nu mice was established. After inoculation with 10(8) Candida albicans yeasts, these mice displayed increased levels of oral colonization compared to euthymic control mice and developed a chronic oropharyngeal infection. Histopathological examination of nu/nu oral tissues revealed extensive hyphae penetrating the epithelium, with polymorphonuclear leukocyte microabscess formation. Adoptive transfer of either naive or immune lymphocytes into immunodeficient mice resulted in the recovery of these animals from the oral infection. Reconstitution of immunodeficient mice with naive CD4(+) but not CD8(+) T cells significantly decreased oral colonization compared to controls. Interleukin-12 and gamma interferon were detected in the draining lymph nodes of immunodeficient mice following reconstitution with naive lymphocytes. This study demonstrates the direct requirement for T lymphocytes in recovery from oral candidiasis and suggests that this is associated with the production of cytokines by CD4(+) T helper cells.
authors.affiliation: Oral Biology and Pathology, School of Dentistry, University of Queensland, Brisbane, Queensland, Australia. c.farah@uq.edu.au
authors.forename: C S
authors.initials: CS
authors.lastname: Farah
authors.forename: S
authors.initials: S
authors.lastname: Elahi
authors.forename: K
authors.initials: K
authors.lastname: Drysdale
authors.forename: G
authors.initials: G
authors.lastname: Pang
authors.forename: T
authors.initials: T
authors.lastname: Gotjamanos
authors.forename: G J
authors.initials: GJ
authors.lastname: Seymour
authors.forename: R L
authors.initials: RL
authors.lastname: Clancy
authors.forename: R B
authors.initials: RB
authors.lastname: Ashman
mesh_terms: D019264:Adoptive Transfer; D000818:Animals; D015704:CD4 Antigens / Q000235:genetics; D018791:CD4 Lymphocyte Count; D016516:CD4-CD8 Ratio; D015496:CD4-Positive T-Lymphocytes / Q000166:cytology / Q000276:immunology*; D016827:CD8 Antigens / Q000235:genetics; D018414:CD8-Positive T-Lymphocytes / Q000166:cytology / Q000276:immunology; D002176:Candida albicans / Q000254:growth & development / Q000276:immunology; D002177:Candidiasis / Q000276:immunology* / Q000473:pathology; D016207:Cytokines / Q000096:biosynthesis; D004195:Disease Models, Animal; D004797:Enzyme-Linked Immunosorbent Assay / Q000379:methods; D005121:Extremities; D005260:Female; D015870:Gene Expression; D008198:Lymph Nodes / Q000166:cytology / Q000276:immunology; D008214:Lymphocytes / Q000276:immunology; D051379:Mice; D008807:Mice, Inbred BALB C; D008808:Mice, Inbred CBA; D008819:Mice, Nude; D010612:Pharyngitis / Q000276:immunology* / Q000473:pathology; D013154:Spleen / Q000166:cytology; D013950:Thymus Gland / Q000276:immunology / Q000637:transplantation; D014059:Tongue / Q000276:immunology / Q000382:microbiology / Q000473:pathology
chemical_list: D015704:CD4 Antigens; D016827:CD8 Antigens; D016207:Cytokines