“…Many laboratories have developed what is now overwhelming evidence linking sleep deprivation-enhanced inter-leukin-1 beta (IL1), and the related cytokine tumor necrosis factor alpha (TNF), to symptoms associated with sleep deprivation, such as sensitivity to kindling [4] and pain stimuli [5,6,7], cognitive [8,9,10], memory [11,12,13], and performance impairments [11], depression [14,15], sleepiness [2,16,17], and fatigue [14,18,19]. Further, chronic sleep loss is associated with pathologies such as metabolic syndrome [20,21,22], chronic inflammation [23,24], and cardiovascular disease [reviewed 25]. All of these sleep deprivation-associated symptoms can be induced by injection of exogenous IL1 and/or TNF [reviewed 1,2], or in some cases blocked if these cytokines are inhibited [21,26,27].…”