Abstract
The cause of sudden sensorineural hearing loss (SSNHL) remains unclear and therefore it is often considered as idiopathic. Sleep disturbance has been linked to SSNHL and circadian rhythm disruption, but the link between circadian rhythm disruption and SSNHL has never been investigated. In this study, we surveyed the sleep quality of 38 patients with SSNHL using a simple insomnia sleep questionnaire. The expression of circadian clock genes in peripheral blood (PB) leukocytes from 38 patients with SSNHL and 71 healthy subjects was accessed using realtime quantitative reverse transcriptase-polymerase chain reaction and validated using immunocytochemical staining. We found that 61.8% of patients with SSNHL suffered from insomnia before the insult of hearing loss. Besides, significantly decreased expression of PER1, CRY1, CRY2, CLOCK, BMAL1, and CKle was found in PB leukocytes of patients with SSNHL when compared with healthy subjects. SSNHL patients with vertigo had significantly lower expression of CRY1 and CKle than patients without vertigo symptoms. Our results imply the association of sleep disturbance and disrupted circadian rhythm in SSNHL.
Original language | English |
---|---|
Article number | e978 |
Journal | Medicine (United States) |
Volume | 94 |
Issue number | 26 |
DOIs | |
State | Published - 01 07 2015 |
Bibliographical note
Publisher Copyright:Copyright © 2015 Wolters Kluwer Health, Inc. All rights reserved.