Search Results (94)

Background/Objectives: The COVID-19 pandemic has had a profound impact on the mental health of the general population, particularly older adults. This study aimed to explore the association between loneliness and mental health disorders in this demographic during the pandemic. Methods: A cross-sectional survey was conducted in Portugal using data from the Survey of Health, Ageing and Retirement in Europe (SHARE) database between June and August 2020, during the COVID-19 pandemic (Wave 8 COVID-19 Survey), using computer-assisted telephone interviews. Results: The final sample included 836 participants, with 387 (46.4%) men and a mean age of 74.5 years (SD = 6.7). Mental health indicators revealed that 441 (52.1%) reported feelings of nervousness, 384 (45.3%) experienced sadness or depression, 349 (41.2%) encountered sleeping difficulties, and 280 (33.1%) reported experiencing loneliness often or some of the time. Increased feelings of loneliness were notably associated with women in poorer health, those with heightened fear of falling, dizziness, fatigue, anxiety, depression, and concurrent health and sleep issues. Age and medication use did not significantly impact feelings of loneliness. Conclusions: The findings highlight a potential association between adverse mental health outcomes among older adults during the initial phase of the pandemic. Future research, employing longitudinal research designs, is warranted to explore these relationships more rigorously, in a post-pandemic context, and to inform effective intervention development and strategies to prevent mental health problems within this vulnerable population. Full article

Sleep is essential for physical and mental health, playing a critical role in memory consolidation, behavioral stability, and the regulation of immune and metabolic functions. The incidence of sleep disorders, particularly sleep deprivation (SD), increases with age and is prevalent in neurodegenerative and psychiatric disorders such as Alzheimer’s disease (AD). Nearly 40% of AD patients experience significant chronic sleep impairments. The clinical distinction between late-life sleep disorders and AD is often challenging due to overlapping symptoms, including cognitive decline and behavioral impairments. Although the exact causal relationship between SD and AD remains complex and multifaceted, strong evidence suggests a bidirectional link, with AD patients frequently exhibiting disrupted sleep architecture, reduced slow-wave activity, and shorter total sleep duration. On a pathophysiological level, SD contributes to neuroinflammation, amyloid-β plaque deposition, and tau tangles, which are key features of AD. Current treatments, such as sedatives and antidepressants, often have limitations, including inconsistent efficacy, dependency risks, and poor long-term outcomes/recurrence, highlighting the need for safer and more effective alternatives. This review examines the interplay between SD and AD and proposes omega (n)-3 fatty acids (FAs) as a potential therapeutic intervention. Preclinical and clinical studies suggest that n-3 supplementation may improve sleep onset/quality, reduce neuroinflammation, support synaptic function, and decrease amyloid-β aggregation, thereby alleviating early AD-related neurological changes. Given their safety profile and neuroprotective effects, n-3 FAs represent a promising strategy for managing the comorbidity of sleep disorders in AD. Full article

Background: Sleep deprivation (SD), defined as the disruption or loss of normal sleep, negatively affects energy metabolism, immune function, and gut microbiota in both humans and animals. Although SD has detrimental effects, it is often unavoidable due to work or study demands. Exercise has been shown to improve sleep quality, regulate metabolism, and enhance immune function. However, whether exercise can mitigate the adverse effects of unavoidable SD remains unclear. Methods: To explore the protective effects of exercise against SD-induced gut microbiota and metabolic dysfunction, mice were randomly assigned to four groups: control (CTR), exercise (EXE), SD, and exercise + SD (EXE + SD). Inflammatory markers and gut microbiota composition were analyzed to assess the impacts of SD and exercise interventions. Results: The inflammatory levels and energy metabolism in SD mice were significantly increased compared to those in CTR mice. Compared with SD mice, EXE + SD mice had a more stable gut microbiota structure and higher butyrate levels. Meanwhile, the inflammatory response caused by SD was also inhibited by exercise preconditioning. Both lipopolysaccharide inhibitors injection and butyrate supplementation can partially alleviate the elevation of inflammatory response and energy metabolism caused by SD. Conclusion: The inflammation and energy metabolism disorders in mice caused by SD can be inhibited by exercise preconditioning through stabilizing the structure of gut microbiota. This protective effect is highly likely related to the increase in butyric acid levels caused by exercise. Full article

Ashwagandha (Withania somnifera) is a well-known adaptogenic herb traditionally used to enhance sleep quality and mitigate stress-induced cognitive decline. This study investigated the effects of different doses of ashwagandha root extract (AE) formulations on cognitive function, oxidative stress, and neuronal plasticity in a rat model of sleep deprivation (SD). Forty-nine rats were randomly assigned to seven groups: control, wide platform (WP), SD, SD + A1 (15 mg/kg AE 1.5%), SD + A2 (30 mg/kg AE 1.5%), SD + A3 (5.5 mg/kg AE 8.0%), and SD + A4 (11 mg/kg AE 8.0%). The extract was administered orally for four weeks. SD induced via a modified wide platform model significantly impaired spatial memory, increased oxidative stress, and suppressed GABA receptor activity. Treatment with all AE doses, except 15 mg/kg AE 1.5%, considerably reduced serum corticosterone (12% for SD + A2, 15% for SD + A3, and 32% for SD + A4), CRH (11% for SD + A2, 14% for SD + A3, and 17% for SD + A4), ACTH (22% for SD + A2, 26% for SD + A3, and 38% for SD + A4), and MDA levels (31% for SD + A2, 34% for SD + A3, and 46% for SD + A4) (p < 0.05). All doses improved antioxidant enzyme activity and memory performance, while AE 8.0% doses notably increased serotonin (19% for SD + A3 and 33% for SD + A4) and dopamine levels (40% for SD + A3 and 50% for SD + A4). Moreover, AE treatment enhanced markers of neuronal plasticity and partially improved GABAergic function. These findings suggest that AE formulations, particularly at higher concentrations, exert neuroprotective effects against SD-induced cognitive impairment by modulating oxidative stress, neurotransmitter balance, and neuroplasticity, indicating their potential application in managing stress-related neurological disorders. Full article

Background/Objectives: Sleep disorders (SDs) and Restless Legs Syndrome (RLS) have been reported with high prevalence in Multiple Sclerosis (MS), but data on Pediatric-Onset MS (POMS) are scarce. This study aims to assess the prevalence of SDs, particularly RLS, in a POMS cohort and examine associated clinical features. Methods: We recruited POMS patients who attended the POMS Center of the Bambino Gesù Children’s Hospital between September 2021 and February 2023; they were evaluated for SDs using the Pittsburgh Sleep Quality Index (PSQI) or the Sleep Disturbance Scale for Children (SDSC) and screened for RLS. Correlations with demographical, clinical, neuroradiological, and laboratory findings were analyzed. Results: We recruited 44 POMS patients, of whom 39% were classified as “good sleepers” and 61% were identified as “poor sleepers.” RLS was diagnosed in 10 patients (22.7%). Those with RLS were older and had higher Expanded Disability Status Scale (EDSS) scores compared to non-RLS patients (p = 0.028; p = 0.03). The presence of RLS did not show any significant correlation with MRI lesion load or laboratory data. Conclusions: Our findings suggest an increased rate of SDs and RLS in pediatric MS patients compared to the general pediatric population. Clinical data could support a secondary form of RLS in this population, but results need further confirmation. Full article

Sleep is essential for maintaining both mental and physical well-being. It plays a critical role in the health and development of children. This study investigates sleep patterns and habits of First Nations children, the prevalence of sleep disturbances, and excessive daytime sleepiness (EDS), along with the factors associated with EDS. Our 2024 First Nations Children Sleep Health Study assessed the sleep health of children aged 6 to 17 years living in a First Nation in Canada. Statistical analyses were performed using comparison tests and logistic regression models. A total of 78 children participated; 57.7% were boys. The average age of the participants was 10.49 years (SD = 3.53 years). On school days, children aged 6 to 9 years slept an average of one additional hour, while on weekends, they slept an extra 40 min compared to adolescents aged 10 to 17 years. Only 39.7% of the children (ages 6 to 17) slept alone in a room, with more than 80% of the children sharing a bed every night. Only 30.6% of the children aged 6 to 9 years and 7.2% of the adolescents aged 10 to 17 years adhered to the recommended maximum screen time of 2 h on school days. More than two-thirds of the children reported experiencing sleep disturbances. The prevalence of EDS was 19.7%. After adjusting for age and sex, it was determined that the children who snored loudly and those who did not sleep in their own beds were more likely to experience abnormally high levels of daytime sleepiness. A high proportion of children exceeded the recommended screen time, an important public health issue. Further, identifying sleep patterns among children will facilitate the diagnosis and treatment of disordered sleep. Full article

Electroencephalogram (EEG) signal analysis is crucial for understanding neural activity and advancing diagnostics in neurology. However, traditional signal decomposition (SD) techniques are hindered by two critical issues, mode mixing and mode aliasing, that compromise the quality of the decomposed signal. These challenges result in poor signal integrity, which significantly affects the accuracy of subsequent EEG interpretations and classifications. As EEG analysis is widely used in diagnosing conditions such as epilepsy, brain injuries, and sleep disorders, the impact of these shortcomings can be far-reaching, leading to misdiagnoses or delayed treatments. Despite extensive research on SD techniques, these issues remain largely unresolved, emphasizing the urgent need for a more reliable and precise approach. This study proposes a novel solution through the frequency-shifting variational mode decomposition (FS-VMD) method, which overcomes the limitations of traditional SD techniques by providing better resolution of intrinsic mode functions (IMFs). The FS-VMD method works by extracting and shifting the fundamental frequency of the EEG signal to a lower frequency range, followed by an iterative decomposition process that enhances signal clarity and reduces mode aliasing. By integrating advanced feature selection techniques and classifiers such as support vector machines (SVM), convolutional neural networks (CNN), and feature-weighted k-nearest neighbors (FWKNN), this approach offers a significant improvement in classification accuracy, with SVM achieving up to 99.99% accuracy in the 18-channel EEG setup with a standard deviation of 0.25. The results demonstrate that FS-VMD can address the critical issues of mode mixing and aliasing, providing a more accurate and efficient solution for EEG signal analysis and diagnostics. Full article

Sleep disorders increase the risk of cardiovascular diseases. However, the underlying mechanisms remain unclear. This study aims to examine the critical role of oxytocin neurons in the paraventricular nucleus (PVN^OXT) in regulating the cardiovascular system and to elucidate potential mechanisms through which sleep disturbance may contribute to cardiovascular diseases. In this study, using an automated sleep deprivation system, mice were given chronic sleep deprivation (cSD) for 7 days, 6 h per day. cSD induced blood transcriptomic alterations accompanied by lower heart rate, higher blood pressure, and elevated cardiac autophagy/apoptosis. Instant optogenetic activation of oxytocin neurons in the paraventricular nucleus (PVN^OXT) provoked heart rate suppression in normal mice, whereas in cSD mice, activation precipitated intermittent cardiac arrest. On the contrary, inhibition of PVN^OXT showed no influence on the cardiovascular system of normal mice, but it attenuated cSD-induced rise in blood pressure. Long-term low-frequency stimulation (LTF) of PVN^OXT decreased neuronal excitability and oxytocin release, effectively reversing cSD-mediated cardiovascular responses. Mechanistically, cSD triggered the upregulation of blood-derived 3-mercaptopyruvate sulfurtransferase (mPST), and a suppression of PVN^OXT postsynaptic activity to a certain extent. The quick and long-term decrease of oxytocin by LTF could lead to feedback inhibition in mPST expression and thus reverse cSD-mediated cardiovascular responses. Altogether, modulation of PVN^OXT could mediate cSD-induced cardiovascular abnormalities without affecting normal mice. Our research provided potential targets and key mechanisms for cardiovascular diseases associated with sleep disorders. Full article

Weizmannia coagulans BC99, a Gram-positive, spore-forming, lactic acid-producing bacterium is renowned for its resilience and health-promoting properties, W. coagulans BC99 survives harsh environments, including high temperatures and gastric acidity, enabling effective delivery to the intestines. The consequences of chronic sleep deprivation (SD) include memory deficits and gastrointestinal dysfunction. In this study, a chronic sleep deprivation cognitive impairment model was established by using a sleep deprivation instrument and W. coagulans BC99 was given by gavage for 4 weeks to explore the mechanism by which BC99 improves cognitive impairment in sleep-deprived mice. BC99 improved cognitive abnormalities in novel object recognition tests induced by chronic sleep deprivation and showed behavior related to spatial memory in the Morris water maze test. W. coagulans BC99 reduced the heart mass index of sleep-deprived mice, increased the sleep-related neurotransmitters 5-HT and DA, decreased corticosterone and norepinephrine, and increased alpha diversity and community similarity. It reduced the abundance of harmful bacteria such as Olsenella, increased the abundance of beneficial bacteria such as Lactobacillus and Bifidobacterium, and promoted the production of short-chain fatty acids (SCFAs). W. coagulans BC99 also inhibits LPS translocation and the elevation of peripheral inflammatory factors by maintaining the integrity of the intestinal barrier and inhibiting the expression of the NLRP3 signaling pathway in the jejunum, thereby inhibiting the NLRP3 inflammasome in the brain of mice and reducing inflammatory factors in the brain, providing a favorable environment for the recovery of cognitive function. The present study confirmed that W. coagulans BC99 ameliorated cognitive impairment in chronic sleep-deprived mice by improving gut microbiota, especially by promoting SCFAs production and inhibiting the NLRP3 signaling pathway in the jejunum and brain. These findings may help guide the treatment of insomnia or other sleep disorders through dietary strategies. Full article

Background/Objectives: To translate the OSD-6 questionnaire (6-item quality of life questionnaire for children with obstructive sleep disorders) into Spanish and to assess its psychometric properties and clinical usefulness. Methods: We included children with obstructive sleep apnea (OSA). All underwent polysomnography before and after adenotonsillectomy. Study variables included age, sex, symptoms, polysomnography values, body measurements, and Mallampati and Brodsky classification. Parents or caregivers completed the OSD-6 at baseline and 3 to 6 months after adenotonsillectomy. Following translation and back-translation of the instrument, we evaluated its internal consistency, reliability, construct validity, concurrent validity, predictive validity, and sensitivity to change. Results: We included 45 boys and 15 girls. Mean body mass index was 18 (standard deviation [SD] 4) kg/m² and mean neck circumference was 28 (SD 5) cm. Seven per cent of children had Brodsky grade 0, 12% had grade 1, 27% had grade 2, 45% had grade 3, and 6% had grade 4. Mean apnea-hypopnea index (AHI) was 12 (SD 7) h⁻¹ before adenotonsillectomy. The overall Cronbach’s alpha was 0.8. We found significant concurrent validity in each questionnaire domain and in the overall score. Predictive validity was significant for Mallampati scores (ANOVA p = 0.011) and borderline significant for AHI levels (ANOVA p = 0.069). The study demonstrated excellent sensitivity to change, both in terms of the overall analysis (p < 0.001) and in each domain (p < 0.001). Moreover, the test-retest reliability was found to be equally excellent (global intraclass correlation coefficient = 0.92 [0.89–0.95]). Conclusions: OSD-6 is a valid and reliable instrument to measure quality of life in children with OSA and can be used in Spanish-speaking countries. Full article

Background/Objectives: Sleep and cognitive alterations are common symptoms associated with child Post-traumatic stress disorder (PTSD) and depression (DEP). This study aims to investigate the relationship between sleep disturbances and cognitive alterations in PTSD and DEP. Methods: Using a quantitative, cross-sectional exploratory design, we examined 130 students (106 girls and 24 boys) aged 11 to 16 years (mean age = 12.9, SD = 1.35) from 6th to 8th grade. Twenty-eight participants met the criteria for PTSD, 15 met the criteria for DEP, 43 met the criteria for both PTSD+/DEP+, and 44 served as the control group. Comparative analyses were conducted using the MANOVA and multiple one-way ANOVA tests. Results: The MANOVA test indicated an interaction between cognitive and sleep alterations. Post hoc analysis revealed that sleep patterns were significantly altered among the groups with PTSD, DEP, and PTSD+/DEP+ (F(3, 126) = 16.98, p = 0.001). In contrast, cognitive alterations were most pronounced in PTSD and PTSD+/DEP+ (F(3, 126) = 63.97, p < 0.001). Conclusions: These findings emphasize the impact of PTSD and DEP on cognition and sleep. Potential clinical implications suggest the need for interventions targeting sleep and cognitive alterations. This study underscores the complex relationship among traumatic experiences, depression, and cognitive/sleep alterations. Full article

Background/Objectives: Sleep disorders, such as short sleep, are common comorbidities in individuals with autism spectrum disorder (ASD). Sleep quality and duration are directly associated with quality of life (QOL). Clarifying the influence of ASD on the association between short sleep duration and life satisfaction is an efficient way to improve the QOL of patients with ASD. Methods: To clarify the influence of ASD on the association between short sleep duration and life satisfaction scale scores, we conducted a web-based cross-sectional study involving 3823 Japanese adults aged 20–64 years. Results: In all the participants, a significant inverse association was observed between short sleep duration and life satisfaction. The adjusted odds ratio (OR) and 95% confidence interval (CI) of short sleep for one standard deviation (SD), the increment of life satisfaction scale (2.5 for men and 2.4 for women), was 0.76 (0.70, 0.82). When the analyses were stratified by ASD status, a significant inverse association was observed only among participants without ASD. The corresponding ORs (95% CIs) were 0.73 (0.67, 0.80) and 1.08 (0.85, 1.39) for those with and without ASD. Patients with ASD also showed a significant interaction effect on the association between short sleep duration and life satisfaction. Conclusions: Only participants without ASD showed a significant inverse association between short sleep duration and life satisfaction. Although further investigations are necessary, these results can help clarify the mechanism underlying the association between QOL, short sleep duration, and ASD. Full article

Background: Chronic sleep deprivation (CSD) plays an important role in mood disorders. However, the changes in the gut microbiota and metabolites associated with CSD-induced anxiety/depression-like behavior in female mice have not been determined. Due to the influence of endogenous hormone levels, females are more susceptible than males to negative emotions caused by sleep deprivation. Here, we aim to investigate how CSD changes the gut microbiota and behavior and uncover the relationship between CSD and gut microbiota and its metabolites in female mice. Methods: We used a 48-day sleep deprivation (SD) model using the modified multiple platform method (MMPM) to induce anxiety/depression-like behavior in female C57BL/6J mice and verified our results using the open field test, elevated plus maze, novel object recognition test, forced swim test, and tail suspension test. We collected fecal samples of mice for 16S rDNA sequencing and untargeted metabolomic analysis and colons for histopathological observation. We used Spearmen analysis to find the correlations between differential bacterial taxa, fecal metabolites, and behaviors. Results: Our study demonstrates that CSD induced anxiety/depressive-like behaviors in female mice. The results of 16S rDNA sequencing suggested that the relative abundance of the harmful bacteria g_ Rothia, g_ Streptococcus, g_ Pantoea, and g_ Klebsiella were significantly increased, while the beneficial bacteria g_ Rikenella, g_ Eubacterium]-xylanophilum-group, and g_ Eisenbergiella were significantly decreased after SD. Glycerophospholipid metabolism and glutathione metabolism were identified as key pathways in the fecal metabolism related to oxidative stress and inflammatory states of the intestine. Histological observation showed hyperplasia of epithelial cells, a decrease in goblet cells, and glandular atrophy of the colon in SD mice. There were correlations between some of the differential bacterial taxa, fecal metabolites, and behaviors. Conclusion: In summary, we found that CSD induced anxiety/depression-like behavior, caused gut microbiota dysbiosis, altered fecal metabolism, and damaged the colon barrier in female mice. Full article

Background/Objectives: Sleep problems affect the quality of life (QoL) and treatment prognosis of children with epilepsy (CWE). We analyzed sleep problems and QoL in CWE but without neurodevelopmental disorders, which affect sleep and QoL. We also examined discrepancies between child self-reports and parent proxy reports in QoL assessments. Methods: Thirty-two CWE in grades 2–6 (aged 7–12 years) in regular classes who attended Osaka Metropolitan University Hospital and PL General Hospital between January 2022 and August 2023 were compared with 21 children who had attended the hospitals for acute non-neurological disorders and had recovered (control group). Children with neurodevelopmental disorders, those unable to answer questionnaires, and those taking sleeping pills were excluded. Children in both groups completed the Kinder Lebensqualität Fragebogen (KINDL-R); their parents completed the KINDL-R and Japanese Sleep Questionnaire for Elementary Schoolers (JSQ-ES). Results: There were no significant differences in mean (±SD) JSQ-ES total scores between the epilepsy and control groups (71.6 ± 21.4 vs. 63.2 ± 15.2, respectively; p = 0.16). In the epilepsy group, there were no significant differences in total or subscale KINDL-R scores between children with (JSQ-ES ≥ 80) and without (JSQ-ES < 80) sleep problems. Correlation coefficients between child self-reports and parent proxy reports for KINDL-R total scores were 0.171 (p = 0.348) and 0.656 (p = 0.001) for the epilepsy and control groups, respectively. There was a significant difference between the total scores of children’s self-reports and parents’ proxy reports in the control (p = 0.008) group, but not in the epilepsy group (p = 0.837). Conclusions: Sleep problems may not have significant impacts on the QoL of CWE without neurodevelopmental disorders. Parents of CWE do not always correctly assess their children’s QoL, so it is important to ask both children and their parents to obtain a comprehensive picture of their QoL. Full article

Obstructive sleep apnea (OSA) is a common respiratory disorder, primarily characterized by two pathological features: chronic intermittent hypoxia (CIH) and sleep deprivation (SD). OSA has been identified as a risk factor for numerous diseases, and the inflammatory response related to programmed cell necrosis is believed to play a significant role in the occurrence and progression of multisystem damage induced by OSA, with increasing attention being paid to pyroptosis. Recent studies have indicated that OSA can elevate oxidative stress levels in the body, activating the process of pyroptosis within different tissues, ultimately accelerating organ dysfunction. However, the molecular mechanisms of pyroptosis in the multisystem damage induced by OSA remain unclear. Therefore, this review focuses on four major systems that have received concentrated attention in existing research in order to explore the role of pyroptosis in promoting renal diseases, cardiovascular diseases, neurocognitive diseases, and skin diseases in OSA patients. Furthermore, we provide a comprehensive overview of methods for inhibiting pyroptosis at different molecular levels, with the goal of identifying viable targets and therapeutic strategies for addressing OSA-related complications. Full article