Functional and molecular alterations in the cerebellum are among the most widely recognised associates of autism spectrum disorders (ASD). As a critical computational hub of the brain, the cerebellum controls and coordinates a range of motor, affective and cognitive processes. Despite well-described circuits and integrative mechanisms, specific changes that underlie cerebellar impairments in ASD remain elusive. Studies in experimental animals have been critical in uncovering molecular pathology and neuro-behavioural correlates, providing a model for investigating complex disease conditions. Herein, we review commonalities and differences of the most extensively characterised genetic lines of ASD with reference to the cerebellum. We revisit structural, functional, and molecular alterations which may contribute to neurobehavioral phenotypes. The cross-model analysis of this study provides an integrated outlook on the role of cerebellar alterations in pathobiology of ASD that may benefit future translational research and development of therapies.

• MeSH
• modely genetické MeSH
• modely nemocí na zvířatech * MeSH
• mozeček * patofyziologie   patologie   MeSH
• poruchy autistického spektra * genetika   patologie   patofyziologie   MeSH
• zvířata MeSH
• Check Tag
• zvířata MeSH
• Publikační typ
• časopisecké články MeSH
• přehledy MeSH

Despite advances in understanding the cellular and molecular processes underlying memory and cognition, and recent successful modulation of cognitive performance in brain disorders, the neurophysiological mechanisms remain underexplored. High frequency oscillations beyond the classic electroencephalogram spectrum have emerged as a potential neural correlate of fundamental cognitive processes. High frequency oscillations are detected in the human mesial temporal lobe and neocortical intracranial recordings spanning gamma/epsilon (60-150 Hz), ripple (80-250 Hz) and higher frequency ranges. Separate from other non-oscillatory activities, these brief electrophysiological oscillations of distinct duration, frequency and amplitude are thought to be generated by coordinated spiking of neuronal ensembles within volumes as small as a single cortical column. Although the exact origins, mechanisms and physiological roles in health and disease remain elusive, they have been associated with human memory consolidation and cognitive processing. Recent studies suggest their involvement in encoding and recall of episodic memory with a possible role in the formation and reactivation of memory traces. High frequency oscillations are detected during encoding, throughout maintenance, and right before recall of remembered items, meeting a basic definition for an engram activity. The temporal coordination of high frequency oscillations reactivated across cortical and subcortical neural networks is ideally suited for integrating multimodal memory representations, which can be replayed and consolidated during states of wakefulness and sleep. High frequency oscillations have been shown to reflect coordinated bursts of neuronal assembly firing and offer a promising substrate for tracking and modulation of the hypothetical electrophysiological engram.

• MeSH
• elektroencefalografie MeSH
• kognice * fyziologie   MeSH
• lidé MeSH
• mozek fyziologie   MeSH
• mozkové vlny fyziologie   MeSH
• paměť fyziologie   MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• přehledy MeSH

PURPOSE: There is variation in organization of geriatric rehabilitation across Europe. The purpose of this study was to describe the selection criteria for referral to geriatric rehabilitation, care provided, and recovery trajectories of post-COVID-19 patients referred to geriatric rehabilitation in Europe. METHODS: This observational cohort study included 723 patients in 59 care facilities for geriatric rehabilitation across 10 countries. Patient data were collected from medical records on admission to geriatric rehabilitation (between September 2020 and October 2021), discharge, 6 weeks and 6 months follow-up. The primary and secondary outcomes were recovery in daily functioning (Barthel Index) and Quality of Life (EQ-5D-5L) from admission to discharge. These were examined using linear mixed models with two levels (measurements nested in patients) and country as an independent variable. Random intercept and random linear slope parameters were added when they improved model fit. A survey about organization of geriatric rehabilitation for post-COVID-19 patients was filled out by country coordinators and data were analyzed using descriptive statistics and inductive coding of answers to open questions. RESULTS: Patients had a mean age of 75.7 years old and 52.4% were male. Many countries used various combinations of the selection criteria, such as functional status, age, frailty, Comprehensive Geriatric Assessment, comorbidities, and cognitive impairments. Most patients received physiotherapy (88.8%) and occupational therapy (69.7%), but there was substantial variance between countries in the percentages of patients that received protein or calorie enriched diets, oxygen therapy, and other treatment components. In all countries, patients showed recovery in daily functioning and quality of life, although there was variation in between countries in rate of recovery. Daily functioning seemed to increase most rapidly in the Czech Republic, Germany, and Russia. The steepest increases in quality of life were seen in the Czech Republic, Germany, and Spain. CONCLUSION: Post-COVID-19 patients showed recovery during geriatric rehabilitation, albeit at variable rates. The observed variation may be explained by the heterogeneity in selection criteria and care provided. This study highlights the need for harmonization of measurements in geriatric rehabilitation order to perform explanatory research and optimize geriatric rehabilitation throughout Europe to ensure optimal patient recovery.

• MeSH
• činnosti denního života MeSH
• COVID-19 * rehabilitace   epidemiologie   MeSH
• geriatrické hodnocení MeSH
• kohortové studie MeSH
• kvalita života MeSH
• lidé MeSH
• obnova funkce MeSH
• SARS-CoV-2 fyziologie   MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• Check Tag
• lidé MeSH
• mužské pohlaví MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• multicentrická studie MeSH
• pozorovací studie MeSH
• srovnávací studie MeSH
• Geografické názvy
• Evropa MeSH

INTRODUCTION: One of the most debilitating problems encountered by people with multiple sclerosis (MS) is the loss of balance and coordination. Our study aimed to comprehensively evaluate the effectiveness of one year of Tai-chi exercise in patients with MS using both subjective and objective methods, including posturography. METHODS: This was a single-group longitudinal one-year study performed from the 1st of January 2019 to the 1st of January 2020. The primary outcomes of interest were the Mini-Balance Evaluation Systems Test (Mini-BESTest) and static posturography measures as objective methods to detect subtle changes associated with postural control/balance impairment. Secondary outcomes were measures of depression, anxiety, cognitive performance, and quality of life. All objective and subjective parameters were assessed four times: at baseline, and after three, six and 12 months of regular Tai-chi training. The difference was calculated as a subtraction of baseline values from every timepoint value for each measurement. If the normality test was passed, parametric one-sample t-test was used, if failed, Wilcoxon signed ranks test was used to test the difference between the baseline and each timepoint. Alpha was set to 0.017 using Bonferroni correction for multiple comparisons. RESULTS: Out of 25 patients with MS enrolled, 15 women with MS (mean age 44.27 years) were included for statistical analyses after completing the 12-month program. After 12 months, significant improvements were found in all objective balance and gait tests: Mini-BESTest (p<0.001), static posturography measures (total area of the centre of foot pressure - TA; p = 0.015), 25 Feet Walk Test (25FWT; p = 0.001), anxiety (Beck Anxiety Inventory - BAI; p = 0.005) and cognition tests (Paced Auditory Serial Addition Test - PASAT; p = 0.003). Measures of depression (Beck Depression Inventory - BDI; p = 0.071), cognition (Symbol Digit Modalities Test - SDMT; p = 0.079), and health-related quality of life (European Quality of Life 5-Dimensions Questionnaire - EQ-5D-5L; p = 0.095) showed a trend of improvement but were not significant, which could be the result of a small sample and increased bias due the type II error. CONCLUSION: According to these preliminary results, this study indicates the possible beneficial effects of long-term Tai-chi training on patients with MS. Although these findings need to be confirmed by further studies with a larger sample of participants of both genders and require more rigorous randomized controlled trials (RCT) design, our findings support the recommendation of regular and long-term Tai-chi exercise in patients with MS. GOV IDENTIFIER (RETROSPECTIVELY REGISTERED): NCT05474209.

• MeSH
• dospělí MeSH
• kognice MeSH
• kvalita života MeSH
• lidé MeSH
• posturální rovnováha MeSH
• prospektivní studie MeSH
• roztroušená skleróza * komplikace   terapie   MeSH
• taiči * MeSH
• Check Tag
• dospělí MeSH
• lidé MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH

Given the key roles of the cerebellum in motor, cognitive, and affective operations and given the decline of brain functions with aging, cerebellar circuitry is attracting the attention of the scientific community. The cerebellum plays a key role in timing aspects of both motor and cognitive operations, including for complex tasks such as spatial navigation. Anatomically, the cerebellum is connected with the basal ganglia via disynaptic loops, and it receives inputs from nearly every region in the cerebral cortex. The current leading hypothesis is that the cerebellum builds internal models and facilitates automatic behaviors through multiple interactions with the cerebral cortex, basal ganglia and spinal cord. The cerebellum undergoes structural and functional changes with aging, being involved in mobility frailty and related cognitive impairment as observed in the physio-cognitive decline syndrome (PCDS) affecting older, functionally-preserved adults who show slowness and/or weakness. Reductions in cerebellar volume accompany aging and are at least correlated with cognitive decline. There is a strongly negative correlation between cerebellar volume and age in cross-sectional studies, often mirrored by a reduced performance in motor tasks. Still, predictive motor timing scores remain stable over various age groups despite marked cerebellar atrophy. The cerebello-frontal network could play a significant role in processing speed and impaired cerebellar function due to aging might be compensated by increasing frontal activity to optimize processing speed in the elderly. For cognitive operations, decreased functional connectivity of the default mode network (DMN) is correlated with lower performances. Neuroimaging studies highlight that the cerebellum might be involved in the cognitive decline occurring in Alzheimer's disease (AD), independently of contributions of the cerebral cortex. Grey matter volume loss in AD is distinct from that seen in normal aging, occurring initially in cerebellar posterior lobe regions, and is associated with neuronal, synaptic and beta-amyloid neuropathology. Regarding depression, structural imaging studies have identified a relationship between depressive symptoms and cerebellar gray matter volume. In particular, major depressive disorder (MDD) and higher depressive symptom burden are associated with smaller gray matter volumes in the total cerebellum as well as the posterior cerebellum, vermis, and posterior Crus I. From the genetic/epigenetic standpoint, prominent DNA methylation changes in the cerebellum with aging are both in the form of hypo- and hyper-methylation, and the presumably increased/decreased expression of certain genes might impact on motor coordination. Training influences motor skills and lifelong practice might contribute to structural maintenance of the cerebellum in old age, reducing loss of grey matter volume and therefore contributing to the maintenance of cerebellar reserve. Non-invasive cerebellar stimulation techniques are increasingly being applied to enhance cerebellar functions related to motor, cognitive, and affective operations. They might enhance cerebellar reserve in the elderly. In conclusion, macroscopic and microscopic changes occur in the cerebellum during the lifespan, with changes in structural and functional connectivity with both the cerebral cortex and basal ganglia. With the aging of the population and the impact of aging on quality of life, the panel of experts considers that there is a huge need to clarify how the effects of aging on the cerebellar circuitry modify specific motor, cognitive, and affective operations both in normal subjects and in brain disorders such as AD or MDD, with the goal of preventing symptoms or improving the motor, cognitive, and affective symptoms.

• MeSH
• depresivní porucha unipolární * MeSH
• dospělí MeSH
• konsensus MeSH
• kvalita života MeSH
• lidé MeSH
• magnetická rezonanční tomografie metody   MeSH
• mozeček patologie   MeSH
• průřezové studie MeSH
• senioři MeSH
• stárnutí MeSH
• Check Tag
• dospělí MeSH
• lidé MeSH
• senioři MeSH
• Publikační typ
• časopisecké články MeSH
• přehledy MeSH

Klasický snus je sáček plněný vlhčeným tabákem, který si jeho uživatel vkládá do úst, obvykle mezi horní ret a dáseň. Hlavní složkou snusu v dnešních výrobcích je speciální vlhký vysoce kvalitní rozkrájený tabák. Kromě tabáku obsahuje snus různé potravinářské příchutě a soli, které ovlivňují jeho chuť a prodlužují trvanlivost. Snusování je jedním ze způsobů jak požít nikotin, aniž by se uživatel vystavoval riziku vedlejších účinků dalších látek vznikajících při kouření spalovaného tabáku. Množství přijatého nikotinu u kuřáků cigaret a u vyznavačů snusování je přibližně stejné. Podle množství užívaného snusu, jeho „síle“ a době, po kterou snus v ústech působí, však uživatel snusu může absorbovat nikotinu výrazně více než kuřák cigaret. Konzumace snusu je poměrně běžná i mezi sportovci, a to i na úrovni vrcholových závodníků a olympioniků. Psychoaktivní látka, jako je nikotin, zvyšuje bdělost, zlepšuje koordinaci a příznivě ovlivňuje kognitivní výkon. Pokud by byl prokázán pozitivní vliv na sportovní výkonnost, lze předpokládat, že Světová antidopingová agentura WADA by zasáhla a snus zařadila mezi zakázané látky či postupy. V současnosti je snus součástí sledovacího programu WADA. Produkty typu snus nejen ze Skandinávie jsou na českém trhu běžně dostupné. Alternativou jsou nikotinové sáčky. Ty již tabák neobsahují, zato však obsahují účinnou látku – nikotin. Po několikaletém váhání vstoupila v platnost novela zákona č. 65/2017 Sb (41) o ochraně zdraví před škodlivými účinky návykových látek, která obsahuje zákaz prodeje nikotinových sáčků dětem a mládeži do 18 let. Vzhledem k závažným zdravotním rizikům je stále třeba varovat před jakoukoliv formou konzumace tabákových či nikotinových výrobků.

Classic snus is a pouch filled with moistened tobacco that the user puts in his mouth, usually between his upper lip and gum. The main ingredient in snus in today’s products is special moist, high-quality, sliced tobacco. In addition to tobacco, snus contains various food flavors and salts that envelop its flavor and extend its durability. Snusing is one way to ingest nicotine without exposing the user to the risk of side effects from other substances that occur when smoking combusted tobacco. The amount of nicotine ingested by cigarette smokers and snusers is about the same. However, depending on the amount of snus used, its "strength" and the length of time the snus stays in the mouth, a snus user can absorb significantly more nicotine than a cigarette smoker. Snus consumption is also quite common among athletes, even at the level of top athletes and Olympians. A psychoactive substance such as nicotine increases alertness, improves coordination, and favorably affects cognitive performance. If a positive effect on athletic performance was proven, it can be assumed that the World Anti-Doping Agency (WADA) would intervene and include snus among prohibited substances or procedures. Currently, snus is part of WADA’s surveillance program. Snus products not only from Scandinavia are commonly available on the Czech market. Nicotine pouches are an alternative. They no longer contain tobacco, but they do contain the active ingredient nicotine. After several years of hesitation, an amendment to Act No. 65/2017 Coll. on Health Protection against the Harmful Effects of Addictive Substances, which includes a ban on the sale of nicotine pouches to children and youth under 18 years of age, came into force. Due to the serious health risks, there is still a need to warn against any form of consumption of tobacco or nicotine products.

• Klíčová slova
• nikotinové sáčky,
• MeSH
• bezdýmný tabák * zákonodárství a právo   MeSH
• doping ve sportu MeSH
• lidé MeSH
• návykové chování MeSH
• nikotin farmakologie   škodlivé účinky   MeSH
• sportovci MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• přehledy MeSH
• Geografické názvy
• Česká republika MeSH

BACKGROUND AND OBJECTIVES: Sleep disorders often predict or co-occur with cognitive decline. Yet, little is known about how the relationship unfolds among older adults at risk for cognitive decline. To examine the associations of sleep disorders with cognitive decline in older adults with unimpaired cognition or impaired cognition (mild cognitive impairment and dementia). RESEARCH DESIGN AND METHODS: A total of 5,822 participants (Mage = 70) of the National Alzheimer's Coordinating Center database with unimpaired or impaired cognition were followed for 3 subsequent waves. Four types of clinician-diagnosed sleep disorders were reported: sleep apnea, hyposomnia/insomnia, REM sleep behavior disorder, or "other." Cognition over time was measured by the Montreal Cognitive Assessment (MoCA) or an estimate of general cognitive ability (GCA) derived from scores based on 12 neuropsychological tests. Growth curve models were estimated adjusting for covariates. RESULTS: In participants with impaired cognition, baseline sleep apnea was related to better baseline MoCA performance (b = 0.65, 95% confidence interval [95% CI] = [0.07, 1.23]) and less decline in GCA over time (b = 0.06, 95% CI = [0.001, 0.12]). Baseline insomnia was related to better baseline MoCA (b = 1.54, 95% CI = [0.88, 2.21]) and less decline in MoCA over time (b = 0.56, 95% CI = [0.20, 0.92]). Furthermore, having more sleep disorders (across the 4 types) at baseline predicted better baseline MoCA and GCA, and less decline in MoCA and GCA over time. These results were only found in those with impaired cognition and generally consistent when using self-reported symptoms of sleep apnea or insomnia. DISCUSSION AND IMPLICATIONS: Participants with sleep disorder diagnoses may have better access to healthcare, which may help maintain cognition through improved sleep.

• MeSH
• kognice MeSH
• kognitivní dysfunkce * psychologie   MeSH
• kognitivní stárnutí * MeSH
• lidé MeSH
• neuropsychologické testy MeSH
• poruchy iniciace a udržování spánku * epidemiologie   MeSH
• senioři MeSH
• syndromy spánkové apnoe * MeSH
• Check Tag
• lidé MeSH
• senioři MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• Research Support, N.I.H., Extramural MeSH
• Research Support, U.S. Gov't, Non-P.H.S. MeSH

BACKGROUND: Existing research underscores the positive influence of consistent physical activity, fitness, and motor coordination on school-aged children's cognitive and academic performance. However, a gap exists in fully understanding this relationship among preschoolers, a critical age group where the development of cognitive functions is significant. The study aims to expand upon existing evidence that connects motor and cognitive development by examining the correlation between specific motor coordination and physical fitness skills and the development of constructive and conceptual thinking in preschool-aged children. METHODS: Data from 56 children aged 4-5 years (mean age 4.5 ± 0.36y), comprising 30 girls and 26 boys, participated in this study. We assessed muscular strength (via standing long jump, wall toss test, flexibility), agility (4 × 5 m shuttle), cardiorespiratory fitness (20 m pacer test), and motor coordination (lateral jumping, platform shifting). Cognitive abilities were measured using the IDS-P. RESULTS: Linear regression models showed that significant predictors of constructive thinking scores were observed solely for flexibility (p = 0.02) and shifting platforms (p = 0.01). Notably, flexibility exhibited a negative relationship (β = -1.68). In the context of conceptual thinking, significant predictors (p < 0.05) included standing long jump (p = 0.01), jumping laterally (p = 0.005), shifting platforms (p = 0.001), throwing (p = 0.02). CONCLUSION: Coordination-demanding activities seem to be related considerably to conceptual thinking in preschoolers. Integrating such motor activities into preschool curricula that demand cognitive engagement can positively influence the development of cognitive functions.

• Publikační typ
• časopisecké články MeSH

BACKGROUND: To examine cross-sectional differences and longitudinal changes in cognitive performance based on the presence of mild behavioral impairment (MBI) among older adults who are cognitively healthy or have mild cognitive impairment (MCI). METHODS: Secondary data analysis of participants (n = 17 291) who were cognitively healthy (n = 11 771) or diagnosed with MCI (n = 5 520) from the National Alzheimer's Coordinating Center database. Overall, 24.7% of the sample met the criteria for MBI. Cognition was examined through a neuropsychological battery that assessed attention, episodic memory, executive function, language, visuospatial ability, and processing speed. RESULTS: Older adults with MBI, regardless of whether they were cognitively healthy or diagnosed with MCI, performed significantly worse at baseline on tasks for attention, episodic memory, executive function, language, and processing speed and exhibited greater longitudinal declines on tasks of attention, episodic memory, language, and processing speed. Cognitively healthy older adults with MBI performed significantly worse than those who were cognitively healthy without MBI on tasks of visuospatial ability at baseline and on tasks of processing speed across time. Older adults with MCI and MBI performed significantly worse than those with only MCI on executive function at baseline and visuospatial ability and processing speed tasks across time. CONCLUSIONS: This study found evidence that MBI is related to poorer cognitive performance cross-sectionally and longitudinally. Additionally, those with MBI and MCI performed worse across multiple tasks of cognition both cross-sectionally and across time. These results provide support for MBI being uniquely associated with different aspects of cognition.

• MeSH
• epizodická paměť * MeSH
• exekutivní funkce MeSH
• kognice MeSH
• kognitivní dysfunkce * MeSH
• lidé MeSH
• neuropsychologické testy MeSH
• průřezové studie MeSH
• senioři MeSH
• Check Tag
• lidé MeSH
• senioři MeSH
• Publikační typ
• časopisecké články MeSH

Parkinsonova nemoc (PN) je velmi častým progresivním onemocněním a řízení motorového vozidla je náročná a komplexní činnost, která vyžaduje souhru kognitivních a psychomotorických funkcí, správné plánování, dobrou paměť, pozornost a koordinaci oko­‐ruka­‐noha. Rozhodnutí o nezpůsobilosti řídit motorové vozidlo má pro pacienta zásadní význam, mějme ale na paměti i bezpečnost silničního provozu. Pacienti s PN mají vyšší výskyt kognitivních poruch a na řízení se rovněž podílí postižení hybnosti. Dalším problémem je výskyt nadměrné denní spavosti, která může být potencována medikací. Měli bychom se cíleně na denní spavost ptát. V současnosti neexistují jednotná právní kritéria, kterými bychom se mohli řídit.

Parkinson's disease (PD) is a very common progressive disease and driving is a demanding and complex activity that requires the interplay of cognitive and psychomotor functions, good planning, memory, attention and eye-hand-foot coordination. The decision to be unable to drive is of paramount importance to the patient, but we must also keep road safety in mind. Patients with PD have a higher incidence of cognitive impairment and impaired mobility is also involved in driving problems. In addition, the incidence of excessive daytime sleepiness, which can be potentiated by medication, is a problem. Daytime sleepiness should be specifically asked about. At present, there are no uniform legal criteria to follow.

• MeSH
• hluboká mozková stimulace metody   MeSH
• lidé MeSH
• nežádoucí účinky léčiv MeSH
• Parkinsonova nemoc * farmakoterapie   komplikace   MeSH
• poruchy nadměrné spavosti diagnóza   etiologie   terapie   MeSH
• posuzování zdravotní způsobilosti MeSH
• řízení motorových vozidel psychologie   zákonodárství a právo   MeSH
• Check Tag
• lidé MeSH