title: Prolonged exercise suppresses antigen-specific cytokine response to upper respiratory infection.
abstract: Fatiguing exercise has been associated with an increased susceptibility to infection. This study examined the antigen-specific T-helper (Th) type 1 and Th type 2 cytokine response to herpes simplex virus (HSV) infection after an acute bout of fatiguing exercise. Male BALB/cJ mice ran on a treadmill (Ex) until voluntary fatigue (approximately 2.5 h), and control mice were handled and remained next to the treadmill. Mice were infected with HSV 20 min after exercise. Mice were killed 2 or 7 days postinfection, and sera and spleens were taken for the determination of HSV-specific serum IgM, splenocyte cytokine production during culture with HSV, and splenocyte natural killer cell cytotoxicity. Both Th type 1 [interleukin (IL)-2, interferon-gamma, IL-12] and Th type 2 (IL-10) cytokine production in spleen cell cultures, as well as natural killer cell cytotoxicity, decreased in Ex on day 2 postinfection. On day 7 postinfection, there was no difference in HSV-specific serum IgM or cytokine production by cells from control and Ex mice, with the exception of decreased IL-12 in Ex mice. These findings suggest that fatiguing exercise may alter the kinetics of antigen-specific cytokine production.
authors.affiliation: The Center for Psychoneuroimmunology Research, University of Rochester School of Medicine and Dentistry, Rochester, New York 14642, USA. mkohut@iastate.edu
authors.forename: M L
authors.initials: ML
authors.lastname: Kohut
authors.forename: G W
authors.initials: GW
authors.lastname: Boehm
authors.forename: J A
authors.initials: JA
authors.lastname: Moynihan
mesh_terms: D000818:Animals; D000914:Antibodies, Viral / Q000096:biosynthesis; D000956:Antigens, Viral / Q000276:immunology; D002478:Cells, Cultured; D016207:Cytokines / Q000096:biosynthesis*; D003601:Cytotoxicity Tests, Immunologic; D005221:Fatigue / Q000276:immunology*; D006561:Herpes Simplex / Q000276:immunology*; D018259:Herpesvirus 1, Human / Q000276:immunology; D007075:Immunoglobulin M / Q000096:biosynthesis; D007371:Interferon-gamma / Q000096:biosynthesis / Q000494:pharmacology; D016753:Interleukin-10 / Q000096:biosynthesis; D007376:Interleukin-2 / Q000096:biosynthesis; D007694:Killer Cells, Natural / Q000276:immunology; D008070:Lipopolysaccharides / Q000494:pharmacology; D008213:Lymphocyte Activation; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D012141:Respiratory Tract Infections / Q000276:immunology*; D018417:Th1 Cells / Q000187:drug effects / Q000276:immunology; D018418:Th2 Cells / Q000187:drug effects / Q000276:immunology
chemical_list: D000914:Antibodies, Viral; D000956:Antigens, Viral; D016207:Cytokines; D007075:Immunoglobulin M; D007376:Interleukin-2; D008070:Lipopolysaccharides; D016753:Interleukin-10; D007371:Interferon-gamma