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Histamine

Histamine Plays an Important Role in Promoting and Stabilizing Wakefulness1-3

In the brain, orexin (hypocretin) and histamine neurons play complementary roles4

  • Orexin and histamine promote wakefulness by activating the cortex and wake-promoting neurons2,3
  • Orexin and histamine help stabilize wakefulness by inhibiting sleep-promoting neurons (non-REM and REM)1-3
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Learn more about the role of histamine

Video thumbnail showing hypocretin (orexin) neurons activate histamine neurons. Both neurons activate cortical neurons, activate other wake-promoting neurons, and inhibit non-REM and REM sleep-promoting neurons
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References

  1. Scammell TE, Jackson AC, Franks NP, Wisden W, Dauvilliers Y. Histamine: neural circuits and new medications. Sleep. 2019;42(1). doi:10.1093/sleep/zsy183
  2. Scammell TE, Arrigoni E, Lipton JO. Neural circuitry of wakefulness and sleep. Neuron. 2017;93(4):747-765.
  3. Haas HL, Sergeeva OA, Selbach O. Histamine in the nervous system. Physiol Rev. 2008;88(3):1183-1241.
  4. Anaclet C, Parmentier R, Ouk K, et al. Orexin/hypocretin and histamine: distinct roles in the control of wakefulness demonstrated using knock-out mouse models. J Neurosci. 2009;29(46):14423-14438.