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Similar Publications

Circadian aspects in nonpharmacologic and pharmacologic treatment of insomnia.

Handb Clin Neurol

January 2025

Department of Surgical Medical and Molecular Pathology and Critical Care Medicine, University of Pisa, Pisa, Italy; Department of Neuroscience, Psychology Unit, University of Pisa Azienda Ospedaliera Universitaria Pisana (AUOP), Pisa, Italy.

Insomnia disorder is a frequent sleep disorder leading to significant health and economic consequences. It has been proposed that individuals with insomnia may experience compromised deactivation systems of arousal, leading to a chronic state of hyperactivation of arousal known as hyperarousal, along with instability in the flip-flop system. Such disruptions may have a primarily impact on the sleep homeostatic drive process.

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Insomnia and some insomnia treatments can impact an individual's daytime functioning. Here, we performed post hoc analyses of patient-reported outcomes from a phase 3 clinical trial to assess the impact of lemborexant (LEM), a dual orexin receptor antagonist, on daytime functioning. Adults with insomnia were randomized 1:1:1 to receive placebo, LEM 5 mg (LEM5) or LEM 10 mg (LEM10) for 6 months.

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Background: Evidence supports the common incidence of sleep disturbance in opioid use disorder (OUD) as a potential marker of disrupted orexin system functioning. This study evaluated the initial safety and tolerability of a challenge dose of lemborexant, a dual orexin antagonist, as an adjunct to buprenorphine/naloxone.

Methods: Patients (18-65 years old) with OUD receiving sublingual buprenorphine/naloxone, with a Pittsburgh Sleep Quality Index total score of 6 or higher, were recruited from outpatient clinics.

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Article Synopsis
  • The study aimed to investigate the effects of lemborexant (LEM) on individuals with insomnia who also experience mild depression or anxiety symptoms.
  • Over a 12-month period, 61 subjects out of 949, who were using medications for depression/anxiety, were evaluated for changes in sleep quality and related measures while being treated with either LEM or a placebo.
  • Results showed that while LEM was effective for improving sleep metrics in the subpopulation, the placebo response was stronger, resulting in a smaller effect size for LEM compared to the overall study population, but no new safety concerns were identified.
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Dual orexin receptor antagonists (DORAs) are indicated for the treatment of insomnia disorder. However, DORAs may change sleep parameters, thus having adverse effects on patients with obstructive sleep apnea (OSA). This meta-analysis clarified the impact of DORAs in OSA treatment on sleep architecture and respiratory parameters.

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