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Hyperarousal in insomnia: pre-sleep and diurnal cortisol levels in response to chronic zolpidem treatment.


ABSTRACT: OBJECTIVES:To determine whether cortisol levels, both diurnal and pre-sleep, would vary as a function of MSLT and would be reduced by nightly placebo versus zolpidem 10 mg. METHODS:DSM-IVR diagnosed subjects with insomnia (N = 95), aged 32-70 yrs, having no other sleep disorder, unstable medical or psychiatric diseases or drug dependency served. On a screening MSLT 27 had MSLTs <10 min (Lo) and 42 > 15 min (Hi). Participants took 10 mg zolpidem or placebo, double-blind, nightly for 12 months. In months one and 12 urine was collected over 24 h in 8 hr-aliquots and assayed for cortisol (Ward Laboratories, Ann Arbor, MI). Saliva samples were collected 35 min before bedtime and the 30 min drug administration in month one and eight, and analyzed for cortisol levels (Salimetrics, State College, PA). RESULTS:Pre-sleep salivary cortisol was higher in insomniacs than controls, but did not differ as a function of MSLT. Nightly zolpidem reduced pre-sleep cortisol relative to placebo on month one and eight, with no month effects or interaction. Diurnal (0700-1500 h) urinary cortisol was higher overall in the Hi vs Lo MSLT subjects with insomnia, was stable across months, and was not reduced with zolpidem. CONCLUSIONS:Hyperarousal among subjects with insomnia as operationalized by MSLT is associated with higher diurnal urinary cortisol than those without hyperarousal, but not differential pre-sleep salivary cortisol. Zolpidem relative to placebo reduced pre-sleep salivary cortisol in all subjects, but not diurnal urinary cortisol. CLINICAL TRIAL:Safety and Efficacy of Chronic Hypnotic Use: http://www.clinicaltrials.gov NCT01006525.

SUBMITTER: Roehrs T 

PROVIDER: S-EPMC6721980 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature

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Hyperarousal in insomnia: pre-sleep and diurnal cortisol levels in response to chronic zolpidem treatment.

Roehrs Timothy T   Roth Thomas T  

Sleep medicine 20190425


<h4>Objectives</h4>To determine whether cortisol levels, both diurnal and pre-sleep, would vary as a function of MSLT and would be reduced by nightly placebo versus zolpidem 10 mg.<h4>Methods</h4>DSM-IVR diagnosed subjects with insomnia (N = 95), aged 32-70 yrs, having no other sleep disorder, unstable medical or psychiatric diseases or drug dependency served. On a screening MSLT 27 had MSLTs <10 min (Lo) and 42 > 15 min (Hi). Participants took 10 mg zolpidem or placebo, double-blind, nightly fo  ...[more]

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