New Insights in Chronic Sleep Disorders

A special issue of Biomedicines (ISSN 2227-9059). This special issue belongs to the section "Neurobiology and Clinical Neuroscience".

Deadline for manuscript submissions: closed (31 March 2024) | Viewed by 3445

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Guest Editor
Department of Anesthesiology & Perioperative Medicine, Oregon Health & Science University, 3181 S.W. Sam Jackson Pk. Rd., L459, Portland, OR 97239-3098, USA
Interests: vascular cognitive impairment; dementia; inflammation; myocardial infarction; soluble epoxide hydrolase; sleep; diabetes; cerebral blood flow; glymphatic function; brain injuries; glymphatics

Special Issue Information

Dear Colleagues,

This Special Issue “New Insights in Chronic Sleep Disorders” will feature invited reviews and original articles that advance our understanding of sleep disorders and its consequences for the brain and the body. In recent years, sleep quality and sleep disorders have become a common disease in our 24/7 society. Habitual sleep insufficiency, or chronic sleep restriction, is prevalent due to various factors, such as long work hours, shift work, commuting, family and social responsibilities, and constant accessibility to online information and social media. Chronic sleep restriction impairs cognitive function, reducing work productivity and increasing accidents, while also affecting health. Examples of highly prevalent sleep disorders include, among others, insomnia and sleep-related breathing disorder (Obstructive Sleep Apnea (OSA)). OSA is characterized by recurrent episodes of complete or partial obstruction of the upper airway, leading to reduced or absent breathing during sleep. These episodes are termed "apneas" with complete or near complete cessation of breathing, or "hypopneas" when the reduction in breathing is partial.

There have been recent substantial insights showing that inflammation and neurodegenerative diseases leading to dementia have intrinsic effects on the formation of OSA, but the etiology and the pathophysiology have not yet been fully determined. This Special Issue will focus on the causes of chronic sleep restriction and OSA, their association with inflammation and neurodegenerative diseases and the latest advances in treatment. It is hoped that this Special Issue will help advance the field, indicating where progress has been made and the many unanswered questions for future discoveries.

Dr. Thierno Madjou Bah
Guest Editor

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Keywords

  • obstructive sleep apnea
  • chronic sleep restriction
  • inflammation
  • dementia
  • neurodegenerative diseases
  • treatment

Published Papers (2 papers)

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Research

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12 pages, 287 KiB  
Article
The Associations between Polysomnographic Parameters and Memory Impairment among Patients with Obstructive Sleep Apnea: A 10-Year Hospital-Based Longitudinal Study
by Wei-Chen Chien, Chung-Wei Lin, Ching-Kuan Liu, Shiou-Lan Chen, Mei-Chuan Chou and Chung-Yao Hsu
Biomedicines 2023, 11(2), 621; https://doi.org/10.3390/biomedicines11020621 - 18 Feb 2023
Cited by 3 | Viewed by 1949
Abstract
Obstructive sleep apnea (OSA) has been associated with cognitive decline via several mechanisms, including intermittent hypoxemia, sleep fragmentation, and neuroinflammation. The neurological consequences of OSA have evolved into a major biopsychosocial concern in the elderly, especially memory impairment. We aimed to identify the [...] Read more.
Obstructive sleep apnea (OSA) has been associated with cognitive decline via several mechanisms, including intermittent hypoxemia, sleep fragmentation, and neuroinflammation. The neurological consequences of OSA have evolved into a major biopsychosocial concern in the elderly, especially memory impairment. We aimed to identify the polysomnographic (PSG) parameters capable of predicting memory impairment among OSA patients at or over age 50 with OSA. We reviewed the 10-year electronic medical records of OSA patients and compared the initial PSG parameters between those presenting and not presenting self-reported memory impairment. We conducted subgroup analyses based on OSA severity and performed multivariate analysis to correlate PSG parameters with memory impairment. The result showed that 25 out of the 156 (16%) investigated patients experienced self-reported memory impairment during follow-up. As compared to OSA patients without self-reported memory impairment, those reported with self-reported memory impairment had a higher oxygen desaturation index (ODI) (23.9 ± 17.8 versus 18.2 ± 12.0, p = 0.048). Regarding the associations between apnea-hypopnea index (AHI) as well as ODI and self-reported memory impairment among OSA subgroups classified by severity, the associations were only evident in the severe OSA subgroup in both univariate (p < 0.001; p = 0.005) and multivariate analyses (p = 0.014; p = 0.018). We concluded that AHI and ODI are the most relevant PSG parameters in predicting memory impairment in severe OSA patients. Full article
(This article belongs to the Special Issue New Insights in Chronic Sleep Disorders)

Other

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18 pages, 2208 KiB  
Systematic Review
A Systematic Review and Meta-Analysis of Mean Platelet Volume and Platelet Distribution Width in Patients with Obstructive Sleep Apnoea Syndrome
by Biagio Di Lorenzo, Chiara Scala, Arduino A. Mangoni, Stefano Zoroddu, Panagiotis Paliogiannis, Pietro Pirina, Alessandro G. Fois, Ciriaco Carru and Angelo Zinellu
Biomedicines 2024, 12(2), 270; https://doi.org/10.3390/biomedicines12020270 - 24 Jan 2024
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Abstract
Obstructive sleep apnoea syndrome (OSAS) is a highly prevalent yet underestimated disorder caused by the complete or partial obstruction of the upper airways. Although polysomnography is the gold standard for OSAS diagnosis, there is an active search for easily accessible biomarkers of disease [...] Read more.
Obstructive sleep apnoea syndrome (OSAS) is a highly prevalent yet underestimated disorder caused by the complete or partial obstruction of the upper airways. Although polysomnography is the gold standard for OSAS diagnosis, there is an active search for easily accessible biomarkers of disease presence and severity, particularly those reflecting morphological changes in specific blood cells. We investigated the associations between the presence and severity of OSAS, continuous positive airway pressure (CPAP) treatment, mean platelet volume (MPV), and platelet distribution width (PDW), routinely assessed as part of the complete blood count. From 262 retrieved records from PubMed, the Web of Science, Scopus, and Google Scholar, 31 manuscripts were selected for a final analysis, 30 investigating MPV and 15 investigating PDW. MPV was not statistically different between OSAS patients and healthy controls; however, it progressively increased with disease severity. By contrast, OSAS patients had significantly higher PDW values than controls (SMD = 0.40, 95% CI: 0.25 to 0.56; p ˂ 0.001), and the difference increased with disease severity. In a univariate meta-regression, there were significant associations between the MPV and publication year, the apnoea–hypopnea index, and diabetes mellitus, while no associations were observed with the PDW. No significant between-group differences were observed in the subgroup analyses. These data suggest that PDW, and to a lesser extent, MPV, are potential biomarkers of OSAS and require further research to ascertain their pathophysiological significance (PROSPERO, CRD42023459413). Full article
(This article belongs to the Special Issue New Insights in Chronic Sleep Disorders)
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