Sleep and circadian rhythm alterations correlate with depression and cognitive impairment in Huntington's disease

Mar 19, 2010Parkinsonism & related disorders

Changes in Sleep and Body Clock Linked to Depression and Thinking Problems in Huntington’s Disease

AI simplified

Circadian Biology on OpenScience ↗PubMed ↗DOI ↗

Abstract

Night-time sleep impairment affects 58.1% of Huntington's disease patients compared to 34.9% of controls.

Huntington's disease patients experience significantly more night-time sleep impairment than controls.
Daytime sleepiness does not differ significantly between HD patients and controls.
Depression is identified as the sole independent factor linked to night-time sleep impairment in HD patients.
Both sleep onset latency and wake-up time are significantly delayed in HD patients.
Later wake-up times in HD patients are associated with lower cognitive scores, reduced functional capacity, and increased depressive symptoms.
Premanifest mutation carriers exhibit sleep changes that are intermediate between those of HD patients and controls.

AI simplified

OBJECTIVE: Sleep disturbances are a prominent feature of Huntington's disease (HD) and can substantially impair patients' quality of life. However, sleep complaints and their association with other symptoms and signs of HD have not yet been assessed in large groups of patients or premanifest mutation carriers. Therefore, we aimed to delineate the nature of subjective sleep disturbances and identify important correlates of sleep impairment in HD patients and premanifest mutation carriers.

SUBJECTS & METHODS: Using standardized questionnaires (including Epworth's Sleepiness Scale, Pittsburgh Sleep Quality Index, SCOPA-SLEEP, and Beck's Depression Inventory), daytime sleepiness, night-time sleep, and depressed mood were assessed in 63 HD patients, 21 premanifest mutation carriers and 84 controls.

RESULTS: Night-time sleep impairment was significantly more prevalent in HD patients compared with controls (58.1% vs. 34.9%, p = 0.012), but daytime sleepiness was not (12.7% vs. 7.9%, p = 0.560). Depression was the only independent correlate of night-time sleep impairment in HD patients, accounting for 10% of the variance. Compared with controls, both sleep onset latency and wake-up time were significantly delayed in HD patients. Moreover, in HD patients, later wake-up time was significantly associated with cognitive score (r = -0.43), total functional capacity (r = -0.54) and depressive symptoms (r = +0.47). In general, the degree of sleep (phase) changes in premanifest mutation carriers lay in between those of HD patients and controls.

CONCLUSIONS: HD is primarily accompanied by night-time sleep disturbances and a delayed sleep phase, which are associated with depression and lower cognitive as well as functional performance.

Full Text

Full text is available at the source.

View full text (XML) ↗View full text ↗

Sleep and circadian rhythm alterations correlate with depression and cognitive impairment in Huntington's disease

Abstract

Full Text

You found one interesting study. We’ll send the next 7.

what lands in your inbox each week:

Recent issues from the circadian biology brief

Abstract

Full Text

Related papers

You found one interesting study. We’ll send the next 7.

what lands in your inbox each week:

Recent issues from the circadian biology brief