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The sleep cycle, an integral part of human health, consists of several stages with distinct characteristics and functions. It begins with a transition from wakefulness to sleep, known as the light sleep phase, followed by the restorative deep sleep phase, essential for physical recovery and growth. The cycle concludes with the Rapid Eye Movement (REM) phase, characterized by high brain activity and vivid dreaming. Insomnia, a prevalent sleep disorder, involves difficulty falling asleep, staying...
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Sedatives and hypnotics encompass a wide range of substances, each with its unique mechanism of action, uses, and potential adverse effects.
Melatonin congeners like ramelteon (Rozerem) and tasimelteon (Hetlioz) selectively bind to melatonin receptors (MT1 and MT2) and thus mimic the actions of melatonin, a hormone that regulates sleep-wake cycles. Tasimelteon is primarily used for non-24-hour sleep-wake disorder, common in blind patients. They are also used to treat conditions like insomnia...
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Hyperarousal in insomnia and hypnotic dose escalation.

T A Roehrs1, T Roth1

  • 1Sleep Disorders and Research Center, Henry Ford Hospital, Detroit, MI, USA; Psychiatry and Behavioral Neurosciences, Wayne State University, Detroit, MI, USA.

Sleep Medicine
|October 4, 2016
PubMed
Summary

Insomniacs with hyperarousal self-administered more hypnotics and placebo capsules over time. Higher sleep latency and norepinephrine levels correlated with increased capsule selection in this insomnia study.

Keywords:
Hypnotic self-administrationInsomniaMSLTNE

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Area of Science:

  • Sleep Medicine
  • Neuroscience
  • Pharmacology

Background:

  • Concerns exist regarding the abuse potential of hypnotic medications.
  • Hyperarousal is a potential factor in insomnia and hypnotic use.

Purpose of the Study:

  • To investigate hyperarousal in insomnia patients.
  • To examine the relationship between hyperarousal and hypnotic self-administration over 12 months.

Main Methods:

  • Ninety-five insomnia patients received zolpidem or placebo nightly for 12 months.
  • Nocturnal polysomnograms (NPSGs) and Multiple Sleep Latency Tests (MSLTs) were performed.
  • Urine norepinephrine (NE) levels and hypnotic self-administration were assessed.

Main Results:

  • Higher MSLT latencies correlated with higher NE levels.
  • Patients with higher MSLT latencies self-administered more hypnotic and placebo capsules.
  • Increased capsule selection was observed over time in hyperaroused patients.

Conclusions:

  • Some insomniacs exhibit hyperarousal, indicated by high MSLT and NE levels.
  • Hyperaroused insomniacs increase hypnotic and placebo self-administration over time.
  • These findings highlight the complex relationship between hyperarousal, insomnia, and medication use.