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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Marked decrease in sleepiness in patients with sleep apnea by etanercept, a tumor necrosis factor-alpha antagonist.

The proinflammatory cytokines, TNFalpha and IL-6, are elevated in obstructive sleep apnea (OSA) and have been proposed as mediators of excessive daytime sleepiness in humans. We tested the effects of etanercept, a medication that neutralizes TNFalpha and is approved by the FDA for the treatment of rheumatoid arthritis, in eight obese male apneics. These patients participated in a pilot, placebo-controlled, double-blind study during which nighttime polysomnography, multiple sleep latency test, and fasting blood glucose and plasma levels of IL-6, C-reactive protein, insulin, and adiponectin were obtained. There was a significant and marked decrease in sleepiness by etanercept, which increased sleep latency during the multiple sleep latency test by 3.1 +/- 1.0 min (P < 0.05) compared with placebo. Also, the number of apneas/hypopneas per hour was reduced significantly by the drug compared with placebo (52.8 +/- 9.1 vs. 44.3 +/- 10.3; adjusted difference, -8.4 +/- 2.3; P < 0.05). Furthermore, IL-6 levels were significantly decreased after etanercept administration compared with placebo (3.8 +/- 0.9 vs. 1.9 +/- 0.4 pg/ml; adjusted difference, -1.9 +/- 0.5; P < 0.01). However, no differences were observed in etanercept vs. placebo in the levels of fasting blood glucose and plasma C-reactive protein, insulin, and adiponectin. We conclude that neutralizing TNFalpha activity is associated with a significant reduction of objective sleepiness in obese patients with OSA. This effect, which is about 3-fold higher than the reported effects of continuous positive airway pressure on objective sleepiness in patients with OSA (0.9 vs. 3.1 min), suggests that proinflammatory cytokines contribute to the pathogenesis of OSA/sleepiness.[1]


  1. Marked decrease in sleepiness in patients with sleep apnea by etanercept, a tumor necrosis factor-alpha antagonist. Vgontzas, A.N., Zoumakis, E., Lin, H.M., Bixler, E.O., Trakada, G., Chrousos, G.P. J. Clin. Endocrinol. Metab. (2004) [Pubmed]
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