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Balsamo F, Berretta E, Meneo D, Baglioni C, Gelfo F. The Complex Relationship between Sleep and Cognitive Reserve: A Narrative Review Based on Human Studies. Brain Sci 2024; 14:654. [PMID: 39061395 PMCID: PMC11274941 DOI: 10.3390/brainsci14070654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2024] [Revised: 06/21/2024] [Accepted: 06/24/2024] [Indexed: 07/28/2024] Open
Abstract
Sleep and brain/cognitive/neural reserve significantly impact well-being and cognition throughout life. This review aims to explore the intricate relationship between such factors, with reference to their effects on human cognitive functions. The specific goal is to understand the bidirectional influence that sleep and reserve exert on each other. Up to 6 February 2024, a methodical search of the literature was conducted using the PubMed database with terms related to brain, cognitive or neural reserve, and healthy or disturbed sleep. Based on the inclusion criteria, 11 articles were selected and analyzed for this review. The articles focus almost exclusively on cognitive reserve, with no explicit connection between sleep and brain or neural reserve. The results evidence sleep's role as a builder of cognitive reserve and cognitive reserve's role as a moderator in the effects of physiological and pathological sleep on cognitive functions. In conclusion, the findings of the present review support the notion that both sleep and cognitive reserve are critical factors in cognitive functioning. Deepening comprehension of the interactions between them is essential for devising strategies to enhance brain health and resilience against age- and pathology-related conditions.
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Affiliation(s)
- Francesca Balsamo
- Department of Human Sciences, Guglielmo Marconi University, 00193 Rome, Italy
- IRCCS Fondazione Santa Lucia, 00179 Rome, Italy
| | | | - Debora Meneo
- Department of Human Sciences, Guglielmo Marconi University, 00193 Rome, Italy
| | - Chiara Baglioni
- Department of Human Sciences, Guglielmo Marconi University, 00193 Rome, Italy
- Department of Psychiatry and Psychotherapy, Faculty of Medicine, University of Freiburg, 79104 Freiburg, Germany
| | - Francesca Gelfo
- Department of Human Sciences, Guglielmo Marconi University, 00193 Rome, Italy
- IRCCS Fondazione Santa Lucia, 00179 Rome, Italy
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Sui R, Li J, Shi Y, Yuan S, Wang H, Liao J, Gao X, Han D, Li Y, Wang X. Associations Between Sleep Spindle Metrics, Age, Education and Executive Function in Young Adult and Middle-Aged Patients with Obstructive Sleep Apnea. Nat Sci Sleep 2024; 16:1-15. [PMID: 38213412 PMCID: PMC10778138 DOI: 10.2147/nss.s436824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 12/18/2023] [Indexed: 01/13/2024] Open
Abstract
Purpose This study aimed to investigate the association between sleep spindle metrics and executive function in individuals with obstructive sleep apnea (OSA). Furthermore, we examined the association of age and education on executive function. Patients and Methods A total of 230 (40.90 ± 8.83 years, F/M = 45/185) participants were enrolled. Overnight electroencephalogram (C3-M2) recording detected sleep spindles by a novel U-Net-type neural network that integrates temporal information with time-frequency images. Sleep spindle metrics, including frequency (Hz), overall density (events/min), fast density (events/min), slow density (events/min), duration (sec) and amplitude (µV), were measured. Executive function was assessed using standardized neuropsychological tests. Associations between sleep spindle metrics, executive function, and demographic factors were analyzed using multivariate linear regression. Results In fully adjusted linear regression models, higher overall sleep spindle density (TMT-A, B=-1.279, p=0.009; TMT-B, B=-1.813, p=0.008), fast sleep spindle density (TMT-A, B=-1.542, p=0.048; TMT-B, B=-2.187, p=0.036) and slow sleep spindle density (TMT-A, B=-1.731, p=0.037; TMT-B, B=-2.449, p=0.034) were associated with better executive function. And the sleep spindle duration both during N2 sleep time (TMT-A, B=-13.932, p=0.027; TMT-B, B=-19.001, p=0.034) and N3 sleep time (TMT-B, B=-29.916, p=0.009; Stroop-incongruous, B=-21.303, p=0.035) was independently associated with better executive function in this population. Additionally, age and education were found to be highly associated with executive function. Conclusion Specific sleep spindle metrics, higher overall density, fast density and slow density during N2 sleep time, and longer duration during N2 and N3 sleep time, are independent and sensitive indicators of better executive function in young adult and middle-aged patients with OSA. Further research is needed to explore the underlying mechanisms and clinical implications of these findings.
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Affiliation(s)
- Rongcui Sui
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, People’s Republic of China
- Obstructive Sleep Apnea-Hypopnea Syndrome Clinical Diagnosis and Therapy and Research Centre, Capital Medical University, Beijing, People’s Republic of China
- Key Laboratory of Otolaryngology-Head and Neck Surgery, Ministry of Education, Capital Medical University, Beijing, People’s Republic of China
| | - Jie Li
- Department of Electronic Engineering, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, People’s Republic of China
| | - Yunhan Shi
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, People’s Republic of China
- Obstructive Sleep Apnea-Hypopnea Syndrome Clinical Diagnosis and Therapy and Research Centre, Capital Medical University, Beijing, People’s Republic of China
- Key Laboratory of Otolaryngology-Head and Neck Surgery, Ministry of Education, Capital Medical University, Beijing, People’s Republic of China
| | - Shizhen Yuan
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, People’s Republic of China
- Obstructive Sleep Apnea-Hypopnea Syndrome Clinical Diagnosis and Therapy and Research Centre, Capital Medical University, Beijing, People’s Republic of China
- Key Laboratory of Otolaryngology-Head and Neck Surgery, Ministry of Education, Capital Medical University, Beijing, People’s Republic of China
| | - Huijun Wang
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, People’s Republic of China
- Obstructive Sleep Apnea-Hypopnea Syndrome Clinical Diagnosis and Therapy and Research Centre, Capital Medical University, Beijing, People’s Republic of China
- Key Laboratory of Otolaryngology-Head and Neck Surgery, Ministry of Education, Capital Medical University, Beijing, People’s Republic of China
| | - Jianhong Liao
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, People’s Republic of China
- Obstructive Sleep Apnea-Hypopnea Syndrome Clinical Diagnosis and Therapy and Research Centre, Capital Medical University, Beijing, People’s Republic of China
- Key Laboratory of Otolaryngology-Head and Neck Surgery, Ministry of Education, Capital Medical University, Beijing, People’s Republic of China
| | - Xiang Gao
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, People’s Republic of China
- Obstructive Sleep Apnea-Hypopnea Syndrome Clinical Diagnosis and Therapy and Research Centre, Capital Medical University, Beijing, People’s Republic of China
- Key Laboratory of Otolaryngology-Head and Neck Surgery, Ministry of Education, Capital Medical University, Beijing, People’s Republic of China
| | - Demin Han
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, People’s Republic of China
- Obstructive Sleep Apnea-Hypopnea Syndrome Clinical Diagnosis and Therapy and Research Centre, Capital Medical University, Beijing, People’s Republic of China
- Key Laboratory of Otolaryngology-Head and Neck Surgery, Ministry of Education, Capital Medical University, Beijing, People’s Republic of China
| | - Yanru Li
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, People’s Republic of China
- Obstructive Sleep Apnea-Hypopnea Syndrome Clinical Diagnosis and Therapy and Research Centre, Capital Medical University, Beijing, People’s Republic of China
- Key Laboratory of Otolaryngology-Head and Neck Surgery, Ministry of Education, Capital Medical University, Beijing, People’s Republic of China
| | - Xingjun Wang
- Department of Electronic Engineering, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, People’s Republic of China
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Wan Y, Lv M, Zhou K, Li Z, Du X, Wu W, Xue R. Mood Disorders are Correlated with Autonomic Nervous Function in Chronic Insomnia Patients with OSA. Nat Sci Sleep 2023; 15:511-522. [PMID: 37426309 PMCID: PMC10327906 DOI: 10.2147/nss.s396773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 05/21/2023] [Indexed: 07/11/2023] Open
Abstract
Purpose To evaluate the correlation between sleep microstructure, autonomic nervous system activity, and neuropsychological characteristics in chronic insomnia (CI) patients with obstructive sleep apnea (OSA). Patients and Methods Forty-five CI-OSA patients, forty-six CI patients and twenty-two matched healthy control subjects (HCs) were enrolled. CI-OSA patients were then divided into two groups: mild OSA and moderate-to-severe OSA. All participants completed neuropsychological tests, which included the Hamilton Depression and Anxiety Scales (HAMD and HAMA), the Pittsburgh Sleep Quality Index (PSQI), the Insomnia Severity Index (ISI), the Epworth Sleepiness Scale (ESS), and the Mini-mental State Examination (MMSE). The autonomic nervous system activity and sleep microstructure were examined by the PSM-100A. Results The CI-OSA patients exhibited higher scores on the PSQI, ESS, ISI, HAMA, and HAMD than HCs and CI patients (all p < 0.01). The CI-OSA patients had a lower proportion of stable sleep, REM sleep and a higher proportion of unstable sleep ratio (all p < 0.01) than HCs and CI patients (all p < 0.01). The CI-OSA patients had higher ratios of LF and LF/HF, and lower ratios of HF and Pnn50% (all p < 0.01) than HCs and CI patients (all p < 0.01). Compared to CI-mild OSA patients, the CI-moderate-to-severe OSA patients presented with a higher ESS scores, higher ratios of LF and LF/HF, and lower ratios of HF (all p < 0.05). In CI-OSA patients, higher HAMD scores were correlated with decreased MMSE scores (r=-0.678, p < 0.01). A higher LF ratio was correlated with higher HAMD and HAMA scores (r=0.321, p=0.031, r =0.449, p =0.002), and a higher HF ratio was correlated with lower HAMD and HAMA scores (r=-0.321, P =0.031, r =-0.449, p =0.002). Conclusion OSA exacerbates the abnormalities of sleep microstructure and the autonomic nervous dysfunction in CI patients. Dysfunction of the autonomic nervous system could contribute to mood deterioration in CI with OSA patients.
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Affiliation(s)
- Yahui Wan
- Departments of Neurology, Tianjin Medical University General Hospital Airport Hospital, Tianjin, 300308, People’s Republic of China
| | - Mengdi Lv
- Departments of Neurology, Tianjin First Central Hospital, Tianjin, 300190, People’s Republic of China
| | - Kaili Zhou
- Departments of Neurology, Tianjin Medical University General Hospital Airport Hospital, Tianjin, 300308, People’s Republic of China
| | - Zheng Li
- Departments of Neurology, Binhai Hospital, Peking University, Tianjin, 300450, People’s Republic of China
| | - Xueyun Du
- Departments of Neurology, Tianjin Medical University General Hospital Airport Hospital, Tianjin, 300308, People’s Republic of China
| | - Wei Wu
- Departments of Neurology, Tianjin Medical University General Hospital, Tianjin, 300052, People’s Republic of China
| | - Rong Xue
- Departments of Neurology, Tianjin Medical University General Hospital, Tianjin, 300052, People’s Republic of China
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Gunstad J, Disabato D, Shrestha R, Sanborn V, Mistler CB, Copenhaver MM. Latent profile analysis of data from the brief inventory of neurocognitive impairment (BINI) to develop neuro-cognitive profiles among opioid-dependent patients in drug treatment. J Addict Dis 2023; 41:120-127. [PMID: 35615880 PMCID: PMC9699904 DOI: 10.1080/10550887.2022.2080626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
BACKGROUND Neurocognitive dysfunction is common among individuals with opioid use disorders (OUD) and can impede a range of treatment outcomes. We developed the 57-item Brief Inventory of Neuro-cognitive Impairment (BINI) to help detect and monitor neurocognitive dysfunction in the context of drug treatment settings. To date, no study has examined the possible presence of BINI subgroups among OUD patients, which could enhance our ability to tailor intervention strategies to meet individual treatment needs. The purpose of this study was to conduct a latent profile analysis to identify BINI subgroups that differ in terms of their reported and objective neurocognitive dysfunction. We hypothesized that subgroups would emerge, suggesting the potential benefit of implementing tailored strategies for optimal treatment outcomes. METHODS Latent profile analyses included data from opioid-dependent patients (N = 177) enrolled in a methadone maintenance treatment program between July 2018 and October 2019. RESULTS We found three profiles of self-reported neurocognitive symptoms, including those with 1) minimal concerns 2) moderate concerns, and 3) many concerns across multiple domains. CONCLUSIONS If these results are confirmed, the BINI may be used to rapidly identify persons who require specific accommodation strategies to improve their drug treatment outcomes.
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Affiliation(s)
- John Gunstad
- Department of Psychological Sciences, Kent State University, Kent, OH, USA
| | - David Disabato
- Department of Psychological Sciences, Kent State University, Kent, OH, USA
| | - Roman Shrestha
- Department of Allied Health Sciences, University of Connecticut, Storrs, CT, USA
| | - Victoria Sanborn
- Department of Psychological Sciences, Kent State University, Kent, OH, USA
| | - Colleen B. Mistler
- Department of Allied Health Sciences, University of Connecticut, Storrs, CT, USA
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Yu J, Morys F, Dagher A, Lajoie A, Gomes T, Ock EY, Kimoff RJ, Kaminska M. Associations between sleep-related symptoms, obesity, cardiometabolic conditions, brain structural alterations and cognition in the UK biobank. Sleep Med 2023; 103:41-50. [PMID: 36758346 DOI: 10.1016/j.sleep.2023.01.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 12/12/2022] [Accepted: 01/25/2023] [Indexed: 02/01/2023]
Abstract
OBJECTIVES Sleep disturbances are increasingly recognized as adversely affecting brain health in aging. Our aim was to investigate interrelations between subjective sleep-related symptoms, obesity, cardiometabolic disorders, brain structure and cognitive decline in a population-based aging sample. METHODS Data were extracted from the UK Biobank for anthropometric and demographic information, self-reported sleep behaviours, cardiometabolic measures, structural brain magnetic resonance imaging and cognitive test scores. "Sleep-related symptoms" (SRS) were measured using four questionnaire items: loud snoring, daytime sleepiness, likelihood to nap and difficulty getting up in the morning. Associations were tested using a structural equation model (SEM), adjusted for confounders. Further, multiple regression analysis was used to test for direct relationships between SRS and specific cognitive domains. RESULTS Among 36,468 participants with an average age of 63.6 (SD 7.5) years and 46.7% male, we found that SRS were associated with obesity and several pre-existing cardiometabolic disturbances. In turn, cardiometabolic disorders were associated with increased white matter hyperintensities and cortical thinning, which were related to cognitive dysfunction. SRS were also directly related to several structural brain changes and to cognitive dysfunction. Regression analyses showed that SRS were directly associated with slower reaction times, and lower scores in fluid intelligence, working memory and executive function. CONCLUSIONS Self-reported sleep-related symptoms were associated with cognitive dysfunction directly and through pre-existing cardiometabolic disorders and brain structural alterations. These findings provide evidence that symptoms of sleep disturbances, here defined primarily by hypersomnolence and snoring, are important risk factors or markers for cognitive dysfunction in an aging population.
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Affiliation(s)
- Jessica Yu
- Division of Experimental Medicine, McGill University, Montréal, Québec, Canada
| | - Filip Morys
- Montréal Neurological Institute-Hospital, McGill University Health Centre, McGill University, Montréal, Québec, Canada
| | - Alain Dagher
- Montréal Neurological Institute-Hospital, McGill University Health Centre, McGill University, Montréal, Québec, Canada
| | - Annie Lajoie
- Department of Respirology and Thoracic Surgery, University Institute of Cardiology and Respirology of Quebec, University of Laval, Québec, Québec, Canada
| | - Teresa Gomes
- Translational Research in Respiratory Diseases Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - Elena Younhye Ock
- Montréal Neurological Institute-Hospital, McGill University Health Centre, McGill University, Montréal, Québec, Canada
| | - R John Kimoff
- Translational Research in Respiratory Diseases Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada; Respiratory Division, Sleep Laboratory, McGill University Health Centre, Montréal, Québec, Canada
| | - Marta Kaminska
- Translational Research in Respiratory Diseases Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada; Respiratory Division, Sleep Laboratory, McGill University Health Centre, Montréal, Québec, Canada.
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Devita M, Lavolpe S, Calì G, Beretta N, Maggi L, Mondini S, Mapelli D, Rusconi ML, Merlo P. Eye-to-Hand Coordination in Obstructive Sleep APNEA Syndrome: a Descriptive Study. ARCHIVES OF CLINICAL NEUROPSYCHOLOGY : THE OFFICIAL JOURNAL OF THE NATIONAL ACADEMY OF NEUROPSYCHOLOGISTS 2023; 38:119-125. [PMID: 35905454 DOI: 10.1093/arclin/acac063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/07/2022] [Indexed: 01/25/2023]
Abstract
OBJECTIVE Psychomotor slowdown was observed in individuals with Obstructive Sleep Apnea Syndrome (OSAS). Previous studies evaluated separately cognitive and motor reaction times, finding that OSAS individuals show a specific impairment in the latter. The present study investigates whether eye-to-hand coordination (EHC), a specific psychomotor ability, is compromised in OSAS. METHOD The EHC was measured in 30 OSAS individuals who were matched with 30 healthy controls by the Two-Hand Coordination Test analyzing the speed, accuracy, and coordination; the role of these variables was investigated in predicting the group they belonged to. RESULTS The OSAS participants showed poorer performance in the execution accuracy (t(55) = -3.36, d'Cohen = -0.89, p ≤ .001), which was also found to be the only predictor of the belonging to group (β = 0.43 (0.18), p < .05). CONCLUSIONS The OSAS individuals show impairments in EHC and in correcting their error (executive slowdown). This is the first investigation exploring EHC coordination in this population and contributes in understanding the psychomotor slowness characterizing OSAS.
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Affiliation(s)
- Maria Devita
- Department of General Psychology (DPG), University of Padua, Via Venezia 8, Padua 35131, Italy
| | - Sara Lavolpe
- Neurology Operational Unit, Humanitas Gavazzeni, Bergamo 24121, Italy.,Department of Human and Social Sciences, University of Bergamo, Bergamo 24129, Italy
| | - Gloria Calì
- Neurology Operational Unit, Humanitas Gavazzeni, Bergamo 24121, Italy
| | - Natascia Beretta
- Neurology Operational Unit, Humanitas Gavazzeni, Bergamo 24121, Italy
| | - Lamberto Maggi
- Neurology Operational Unit, Humanitas Gavazzeni, Bergamo 24121, Italy
| | - Sara Mondini
- Department of Philosophy, Sociology, Education and Applied Psychology - FISSPA, University of Padua, Padua 35131, Italy
| | - Daniela Mapelli
- Department of General Psychology (DPG), University of Padua, Via Venezia 8, Padua 35131, Italy
| | - Maria Luisa Rusconi
- Department of Human and Social Sciences, University of Bergamo, Bergamo 24129, Italy
| | - Paola Merlo
- Neurology Operational Unit, Humanitas Gavazzeni, Bergamo 24121, Italy
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Benkirane O, Delwiche B, Mairesse O, Peigneux P. Impact of Sleep Fragmentation on Cognition and Fatigue. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:15485. [PMID: 36497559 PMCID: PMC9740245 DOI: 10.3390/ijerph192315485] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/18/2022] [Accepted: 11/20/2022] [Indexed: 06/17/2023]
Abstract
Sleep continuity and efficacy are essential for optimal cognitive functions. How sleep fragmentation (SF) impairs cognitive functioning, and especially cognitive fatigue (CF), remains elusive. We investigated the impact of induced SF on CF through the TloadDback task, measuring interindividual variability in working memory capacity. Sixteen participants underwent an adaptation polysomnography night and three consecutive nights, once in a SF condition induced by non-awakening auditory stimulations, once under restorative sleep (RS) condition, counterbalanced within-subject. In both conditions, participants were administered memory, vigilance, inhibition and verbal fluency testing, and for CF the TloadDback, as well as sleep questionnaires and fatigue and sleepiness visual analog scales were administered. Subjective fatigue increased and sleep architecture was altered after SF (reduced sleep efficiency, percentage of N3 and REM, number of NREM and REM phases) despite similar total sleep time. At the behavioral level, only inhibition deteriorated after SF, and CF similarly evolved in RS and SF conditions. In line with prior research, we show that SF disrupts sleep architecture and exerts a deleterious impact on subjective fatigue and inhibition. However, young healthy participants appear able to compensate for CF induced by three consecutive SF nights. Further studies should investigate SF effects in extended and/or pathological disruption settings.
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Affiliation(s)
- Oumaïma Benkirane
- UR2NF—Neuropsychology and Functional Neuroimaging Research Unit, at CRCN—Centre for Research in Cognition and Neurosciences and UNI—ULB Neuroscience Institute, Université Libre de Bruxelles (ULB), 1050 Brussels, Belgium
- Brugmann University Hospital, Sleep Laboratory & Unit for Chronobiology U78, Université Libre de Bruxelles (ULB), 1050 Brussels, Belgium
| | - Bérénice Delwiche
- Brugmann University Hospital, Sleep Laboratory & Unit for Chronobiology U78, Université Libre de Bruxelles (ULB), 1050 Brussels, Belgium
| | - Olivier Mairesse
- Brugmann University Hospital, Sleep Laboratory & Unit for Chronobiology U78, Université Libre de Bruxelles (ULB), 1050 Brussels, Belgium
| | - Philippe Peigneux
- UR2NF—Neuropsychology and Functional Neuroimaging Research Unit, at CRCN—Centre for Research in Cognition and Neurosciences and UNI—ULB Neuroscience Institute, Université Libre de Bruxelles (ULB), 1050 Brussels, Belgium
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Wang X, Cui L, Ji X. Cognitive impairment caused by hypoxia: from clinical evidences to molecular mechanisms. Metab Brain Dis 2022; 37:51-66. [PMID: 34618295 DOI: 10.1007/s11011-021-00796-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 07/09/2021] [Indexed: 12/23/2022]
Abstract
Hypoxia is a state of reduced oxygen supply and excessive oxygen consumption. According to the duration of hypoxic period, it can be classified as acute and chronic hypoxia. Both acute and chronic hypoxia could induce abundant neurological deficits. Although there have been significant advances in the pathophysiological injuries, few studies have focused on the cognitive dysfunction. In this review, we focused on the clinical evidences and molecular mechanisms of cognitive impairment under acute and chronic hypoxia. Hypoxia can impair several cognitive domains such as attention, learning and memory, procession speed and executive function, which are similar in acute and chronic hypoxia. The severity of cognitive deficit correlates with the duration and degree of hypoxia. Recovery can be achieved after acute hypoxia, while sequelae or even dementia can be observed after chronic hypoxia, perhaps due to the different molecular mechanisms. Cardiopulmonary compensatory response, glycolysis, oxidative stress, calcium overload, adenosine, mitochondrial disruption, inflammation and excitotoxicity contribute to the molecular mechanisms of cognitive deficit after acute hypoxia. During the chronic stage of hypoxia, different adaptive responses, impaired neurovascular coupling, apoptosis, transcription factors-mediated inflammation, as well as Aβ accumulation and tau phosphorylation account for the neurocognitive deficit. Moreover, brain structural changes with hippocampus and cortex atrophy, ventricle enlargement, senile plaque and neurofibrillary tangle deposition can be observed under chronic hypoxia rather than acute hypoxia.
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Affiliation(s)
- Xiaoyin Wang
- Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China
- Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
| | - Lili Cui
- Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China
| | - Xunming Ji
- Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China.
- Department of Neurosurgery, Xuanwu Hospital of Capital Medical University, No 45, Changchun Street, Beijing, 100053, Xicheng District, China.
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9
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Olaithe M, Pushpanathan M, Bucks RS. Time to regroup and redirect? Sleep fragmentation and hypoxia may not be where we should focus our efforts in looking for causal pathways to cognitive deficits in OSA. J Clin Sleep Med 2021; 17:339-340. [PMID: 33185184 DOI: 10.5664/jcsm.9000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Michelle Olaithe
- School of Psychological Science, University of Western Australia, Perth, Western Australia, Australia
| | - Maria Pushpanathan
- School of Psychological Science, University of Western Australia, Perth, Western Australia, Australia
| | - Romola S Bucks
- School of Psychological Science, University of Western Australia, Perth, Western Australia, Australia
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10
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Lajoie AC, Kaminska M. Cognitive profiles in obstructive sleep apnea and their relationship with intermittent hypoxemia and sleep fragmentation. J Clin Sleep Med 2021; 17:337. [PMID: 33094722 DOI: 10.5664/jcsm.8910] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Annie C Lajoie
- Respirology Epidemiology and Clinical Research Unit, Montreal, Quebec, Canada
| | - Marta Kaminska
- Respiratory Division, Sleep Laboratory, McGill University Health Center, Montreal, Quebec, Canada
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