title: Interleukin-10 inhibits spontaneous sleep in rabbits.
abstract: Proinflammatory cytokines, including interleukin-1beta(IL-1beta) and tumor necrosis factor-alpha (TNF-alpha) are involved in sleep regulation. IL-10 is an anti-inflammatory cytokine that inhibits proinflammatory cytokine production. We hypothesized that IL-10 could attenuate sleep. Thirty-one male rabbits were used. Three doses of IL-10 (5 ng, 50 ng, and 250 ng) were injected intracerebroventricularly during the rest (light) period. One dose of IL-10 (250 ng) was injected during the active (dark) cycle. Appropriate time-matched control injections of saline were given to the same rabbits on different days. The two highest doses of IL-10 significantly inhibited spontaneous nonrapid eye movement sleep if IL-10 was given during the light cycle. The highest dose of IL-10 (250 ng) also significantly decreased rapid eye movement sleep. IL-10 administered at dark onset had no effect on sleep. The sleep inhibitory properties of IL-10 provide additional evidence for the hypothesis that a brain cytokine network is involved in regulation of physiologic sleep.
authors.affiliation: Department of Veterinary and Comparative Anatomy, Pharmacology and Physiology, Washington State University, Pullman 99164-6520, USA.
authors.forename: T
authors.initials: T
authors.lastname: Kushikata
authors.forename: J
authors.initials: J
authors.lastname: Fang
authors.forename: J M
authors.initials: JM
authors.lastname: Krueger
mesh_terms: D000704:Analysis of Variance; D000818:Animals; D001833:Body Temperature Regulation / Q000187:drug effects; D004353:Drug Evaluation, Preclinical; D004569:Electroencephalography / Q000187:drug effects; D006801:Humans; D016753:Interleukin-10 / Q000494:pharmacology*; D008297:Male; D011817:Rabbits; D011994:Recombinant Proteins / Q000494:pharmacology; D012890:Sleep / Q000187:drug effects*
chemical_list: D011994:Recombinant Proteins; D016753:Interleukin-10