title: Effect of hydrocortisone on human natural killer activity and its modulation by beta interferon.
abstract: It is well known that glucocorticoids depress the natural killer (NK) activity of human peripheral blood lymphocytes when used both in vivo and in vitro. Since interferons enhance natural cytotoxicity, potential interaction between beta-interferon and hydrocortisone hemisuccinate has been investigated using mononuclear cells of peripheral blood obtained from 17 healthy donors. At the end of in vitro treatment mononuclear cells were tested for NK activity against K562 cells in a 4 h 51Cr-release assay. The results suggest that beta-interferon at the optimal treatment schedule (i.e. before and after exposure to hydrocortisone) is capable of abrogating the hydrocortisone-mediated impairment of NK function. These findings provide valuable suggestions for optimal treatment schedules with beta-interferon (i.e. beta-interferon treatment before and after exposure of effector cells to hydrocortisone) for overriding the suppressive effects of glucocorticoid therapy on natural immunity.
authors.affiliation: Institute of Experimental Medicine, CNR, Rome, Italy.
authors.forename: M P
authors.initials: MP
authors.lastname: Fuggetta
authors.forename: G
authors.initials: G
authors.lastname: Graziani
authors.forename: A
authors.initials: A
authors.lastname: Aquino
authors.forename: S
authors.initials: S
authors.lastname: D'Atri
authors.forename: E
authors.initials: E
authors.lastname: Bonmassar
mesh_terms: D003602:Cytotoxicity, Immunologic / Q000187:drug effects; D004347:Drug Interactions; D006801:Humans; D006854:Hydrocortisone / Q000031:analogs & derivatives* / Q000494:pharmacology; D007166:Immunosuppressive Agents / Q000494:pharmacology; D066298:In Vitro Techniques; D007370:Interferon Type I / Q000494:pharmacology*; D007694:Killer Cells, Natural / Q000187:drug effects* / Q000276:immunology
chemical_list: D007166:Immunosuppressive Agents; D007370:Interferon Type I; C007133:hydrocortisone hemisuccinate; D006854:Hydrocortisone