Probable Cognitive Impairment Research Articles

Digital Exclusion and Cognitive Function in Elderly Populations in Developing Countries: Insights Derived From 2 Longitudinal Cohort Studies.

Cognition disorders not only lead to adverse health consequences but also contribute to a range of socioeconomic challenges and diminished capacity for performing routine daily activities. In the digital era, understanding the impact of digital exclusion on cognitive function is crucial, especially in developing countries. This study aimed to evaluate the association between digital exclusion and cognitive function among elderly populations in developing countries. Using data from CHARLS (China Health and Retirement Longitudinal Study) from 2011 to 2020 and MHAS (Mexican Health & Aging Study) from 2012 to 2021, we defined digital exclusion as self-reported absence from the internet. Cognitive function was assessed through 5 tests: orientation, immediate verbal recall, delayed verbal recall, serial 7s, and figure recall. Cognitive function was assessed in 2 categories: worse cognition (a categorical variable that classifies cognition as either better or worse compared to the entire cohort population) and cognitive scores (a continuous variable representing raw cognitive scores across multiple follow-up waves). Logistic regression analyses and generalized estimating equation (GEE) analyses were used to examine the relationship between cognitive function and digital exclusion, adjusting for potential confounders, including demographics, lifestyle factors, history of chronic diseases, basic activities of daily living (BADL) disability, instrumental activities of daily living (IADL) disability, and basic cognitive abilities. After excluding participants with probable cognitive impairment at baseline and those who did not have a complete cognitive assessment in any given year (ie, all tests in the cognitive assessment must be completed in any follow-up wave), a total of 24,065 participants in CHARLS (n=11,505, 47.81%) and MHAS (n=12,560, 52.19%) were included. Of these, 96.78% (n=11,135) participants in CHARLS and 70.02% (n=8795) in MHAS experienced digital exclusion. Adjusted logistic regression analyses revealed that individuals with digital exclusion were more likely to exhibit worse cognitive performance in both CHARLS (odds ratio [OR] 2.04, 95% CI 1.42-2.99; P<.001) and MHAS (OR 1.40, 95% CI 1.26-1.55; P<.001). Gender and age did not significantly modify the relationship between digital exclusion and worse cognition (intervention P>.05). The fully adjusted mean differences in global cognitive scores between the 2 groups were 0.98 (95% CI 0.70-1.28; P<.001) in CHARLS and 0.50 (95% CI 0.40-0.59; P<.001) in MHAS. A substantial proportion of older adults, particularly in China, remain excluded from internet access. Our study examined longitudinal changes in cognitive scores and performed cross-sectional comparisons using Z-score standardization. The findings suggest that digital exclusion is linked to an increased risk of cognitive decline among older adults in developing countries. Promoting internet access may help mitigate this risk and support better cognitive health in these populations.

Cognitive performance in breast cancer survivors: a ten-year follow-up

Abstract Background Cognitive impairment (CI) has been widely reported as a frequent non-fatal cancer outcome. 15% to 25% of breast cancer (BCa) patients may have CI; however long-term variations of cognitive performance during and after the cessation of the treatments remains unclear. The present study aims to describe the evolution of cognitive performance in BCa survivors that are still in follow-up at breast cancer clinic, 10 years after diagnosis. Methods 506 women with BCa admitted to the Portuguese Institute of Oncology, Porto, in 2012, were evaluated with the Montreal Cognitive Assessment (MoCA) before any treatment, after one, three, five, and ten years. Patients with a MoCA score ≤1.5 standard deviation below the mean of age- and education-specific norms were considered to have probable cognitive impairment (PCI). The 10-year follow up started in October 2022, and is still in progress (as of March, 118 were evaluated). All women that are still being followed at IPO-Porto for consultations and treatments were evaluated with MoCA assessment. Results PCI prevalence at the 10 years was 43.0% (95%Confidence Interval: 34.1%-52.7%). Several pathways for cognitive performance were identified throughout the 10-year follow-up: 58 women (49.2%) never had PCI at baseline assessment or during follow-up; 19 women (16.1%) had PCI at baseline, from whom 5 (4.2%) had PCI in all evaluations, 2 (1.7%) did not have PCI in any follow up evaluation, 2 (1.7%) had PCI during follow up, but not at 10 years and 3 (2.5%) had PCI again only at the 10-year follow-up; 5 women (4.2%) did not have PCI at baseline but had PCI at least once during follow-up but not at 10 years, and 24.6% had PCI for the first time at 10 years. Conclusions The results show a high prevalence of PCI 10 years after diagnosis with a significant part being new cases. These results highlight the need for including regular assessments of cognitive performance as a part of the clinical follow-up of BCa survivors. Key messages • There is a high prevalence of cognitive deficits in breast cancer suvivors 10 years after diagnosis. • Including cognitive evaluations of breast cancer survivors during clinical follow up are recommended.

A - 6 Effects of Inhibitory Control and Episodic Memory Deficits on Functioning in Probable Mild Cognitive Impairment and Individually Matched Healthy Controls

Abstract Objective Episodic memory and inhibitory control deficits are prevalent among those with mild cognitive impairment (MCI). These deficits have been associated with worse functioning; however, the predictive utility of specific cognitive deficits vary. We investigated whether deficits of episodic memory and inhibitory control are associated with worse physical activity and life satisfaction among people with probable MCI (pMCI). Method The study included 79 pMCI and 79 individually matched controls (HC) who participated in the Human Connectome Project - Aging study. Groups were determined based on MoCA scores (pMCI ≤23; HC ≥ 26). Participants completed the Go/No-go (GNG) and Face Name (FNT) tasks during functional MRI. Associations between GNG False Alarms (GNG FA) and FNT Recognition Accuracy (GNG RA) scores and International Physical Activity Questionnaire (IPAQ) and the PROMIS General Life Satisfaction (GLS) self-reports were examined. Results The pMCI group exhibited deficits compared to the HC on GNG FA (t (152.17) = −1.26, p = 0.05) and FNT RA (t (85.78) = 13.72, p 0.05). However, hierarchical regressions revealed that the interaction of these cognitive tasks predicted IPAQ (∆R2 = 0.02, F(1, 78) = 3.74, p &amp;lt; 0.05). Conclusions Despite confirmation of cognitive deficits, their effects on function are complex. Therefore, MCI deficits may be detected on screening before they clearly impact functioning, underscoring the utility of screening to facilitate more effective earlier interventions.

The Trail Walking Test to predict probable mild cognitive impairment in older adults

The Trail Walking Test to predict probable mild cognitive impairment in older adults

Promoting serious illness conversations in primary care through telehealth among persons living with cognitive impairment.

serious illness conversations (SIC), particularly for persons living with cognitive impairment (PLCI), inconsistently happen in primary care. Pragmatic, scalable strategies are needed to promote SIC for PLCI. Pragmatic, prospective single-arm pilot study that occurred between July 1, 2021 and May 30, 2022 across seven primary care practices in North Carolina. Community-dwelling patients aged 65 and older with known or probable mild cognitive impairment or dementia (with decision-making capacity) and their care partners (if available). SIC telehealth intervention (TeleVoice) via video or telephone to assist PLCI in discussing their current goals, values, and future medical preferences, while facilitating documentation within the EHR. Main feasibility outcomes included reach/enrollment, intervention completion, and adoption rates at the clinic and provider level. Primary effectiveness outcomes included SIC documentation and quality within the EHR and usage of advance care planning billing (ACP) codes. Of the 163 eligible PLCI approached, 107 (66%) enrolled (mean age 83.7 years, 68.2% female, 16.8% Black, 22% living in a geographic area of high socioeconomic disadvantage) and 81 (76%) completed the SIC telehealth intervention; 45 care partners agreed to participate (mean age 71.5 years, 80% female). Adoption at clinic level was 50%, while 75% of providers within these clinics participated. Among PLCI that completed the intervention, SIC documentation and usage of ACP billing codes was 100% and 96%, respectively, with 96% (n = 78) having high-quality SIC documentation. No significant differences were observed between telephone and video visits. These findings provide preliminary evidence to support the feasibility of conducting SICs through telehealth to specifically meet the needs of community-dwelling PLCI. Further investigation of the sustainability of the intervention and its long-term impact on patient and caregiver outcomes is needed.

Reduced adaptability to balance perturbations in older adults with probable cognitive impairment after a severe fall.

Falls in older individuals often result from unexpected balance disturbances during walking, necessitating the analysis of recovery strategies for effective falls prevention. This becomes particularly crucial for individuals with cognitive impairment, who face a higher fall risk compared to cognitively healthy adults. Hence, our study aimed to compare the recovery response to standardized walking perturbations on a treadmill between older adults with cognitive impairment and cognitively healthy older adults. 36 individuals with a recent history of a severe fall, leading to an emergency department visit without subsequent admission, were stratified into two groups (with and without probable cognitive impairment) based on scores of the Montreal Cognitive Assessment. Recovery performance was quantified using force plate data from a perturbation treadmill (M-Gait, Motek Medical B.V., Amsterdam, the Netherlands), specifically evaluating the number of steps needed to restore step length and width to pre perturbation baseline across two trials of nine different perturbations. Individuals with cognitive impairment (n = 18, mean age: 74.7) required significantly (p = 0.045, Cohen's d = 0.69) more steps to recover total steps after perturbations compared to cognitively healthy individuals (n = 18, mean age: 69.7). While step width recovery was similar between the groups, those with probable cognitive impairment required significantly more steps to recover their step length (p = 0.039, Cohen's d = 0.72). Thus, our findings indicate that older adults with probable cognitive impairment manifest inferior gait adaptability, especially in adapting step length, potentially underscoring a critical aspect for effective falls prevention in this population.

Distinct effects of long-term Tai Chi Chuan and aerobic exercise interventions on motor and neurocognitive performance in early-stage Parkinson's disease: a randomized controlled trial.

Parkinson's disease (PD) is a neurodegenerative condition characterized by movement disorders and probable cognitive impairment. Exercise plays an important role in PD management, and recent studies have reported improvement in motor symptoms and cognitive function following aerobic and Tai Chi Chuan exercise. To explore the different effects of Tai Chi Chuan and aerobic exercise on the clinical motor status and neurocognitive performance of patients with early-stage PD. A randomized controlled trial. Parkinson's Disease Center at Kaohsiung Chang Gung Memorial Hospital and National Cheng Kung University Hospital. Patients with idiopathic PD. Fifty-six patients with PD were recruited and divided into three groups: aerobic exercise (AE, N.=14), Tai Chi Chuan exercise (TE, N.=16), and control (CG, N.=13). Before and after a 12-week intervention period, we used unified Parkinson's disease rating scale Part III (UPDRS-III) scores and neuropsychological (e.g., accuracy rates [ARs] and reaction times [RTs]) and neurophysiological (e.g., event-related potential [ERP] N2 and P3 latencies and amplitudes) parameters to respectively assess the patients' clinical motor symptoms and neurocognitive performance when performing a working memory (WM) task. Compared to baseline, UPDRS-III scores were significantly lower in the AE and TE groups after the intervention period, whereas those for the CG group were higher. In terms of the neurocognitive parameters, when performing the WM task after the intervention period, the AE group exhibited significantly faster RTs and larger ERP P3 amplitudes, the TE group exhibited an improvement only in ERP P3 amplitude, and the CG group exhibited a significantly reduced ERP P3 amplitude. However, neither the TE nor the AE group exhibited improved ARs and ERP N2 performance. The present study supported the distinct effectiveness of Tai Chi Chuan and aerobic exercise for improving motor symptoms and providing neurocognitive benefits in PD patients. These results have important implications regarding the use of these exercise interventions for managing PD, particularly in the early stages.

Implementing a mutidisciplinary approach for older adults with cancer: Challenges and achievements in a geriatric oncology program in Sao Paulo, Brazil.

e13769 Background: Treating an older adult with cancer is complex and requires multidisciplinary effort. Multiple studies demonstrate the benefits of timely integration of Geriatric Oncology (GO) with routine oncologic care. Despite this growing body of evidence, there are very few cancer centers around the world that have a dedicated GO program, notably in low- and middle- income countries (LMIC). The objective of this abstract is to describe the first year of the GO program in a private oncology center in São Paulo, Brazil. Methods: As an effort of oncologists, geriatricians and nurses, the team built a consultative model with a nurse performing the G8 triage score to every cancer patient aged ≥ 70 years. For those with a G8 less than 14 points, a comprehensive geriatric assessment (CGA) was performed. The results of the CGA were than provided as a report to the treating physician and all the members of the multidisciplinary team, so that a geriatric assessment (GA) driven intervention could be planned. The patients were then followed for 3, 6, and 12 months to detect falls, emergency rooms visits, hospitalizations, and death. Results: From January 2023 to January 2024, 110 patients with a median age of 79 were evaluated, with 57% having a G8 less than 14. 70 patients we submitted to a CGA. The majority of the tumors were gastrointestinal (30%), lung (20%) and genito-urinary (17%). Regarding the GA domains: 70% of the patients had a possible or probable cognitive impairment by the 10-point cognitive screener; 53% mild psychological distress by PHQ-4 Screening Tool; 47% showed important reduction in hand grip strength scale calling the attention to sarcopenia; 48% were found to be at nutritional risk and 42% were classified as malnourished at the mini-nutritional assessment; polypharmacy was detected in 67% of the patients. Despite these findings, 78% of the patients we classified as ECOG 0 or 1. After GA driven interventions, at 3 and 6 months follow up, 88% of the patients remained with no falls, with a mild rate of hospitalizations (40%) and a low rate of treatment discontinuation (15%). By the end of 6 month follow up, 24% of the patients have died. Conclusions: Geriatric conditions such as functional impairment are common and frequently unrecognized or inadequately addressed in older adults with cancer. Identifying geriatric conditions by performing a GA can help the health team to manage these conditions and provide better oncology care.

The AHA/ASA and DSM-V diagnostic criteria for vascular cognitive impairment identify cases with predominant vascular pathology.

There are major challenges in determining the etiology of vascular cognitive impairment (VCI) clinically, especially in the presence of mixed pathologies, such as vascular and amyloid. Most recently, two criteria (American Heart Association/American Stroke Association (AHA/ASA) and Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-V)) have been proposed for the clinical diagnosis of VCI but have not as yet been validated using neuroimaging. This study aims to determine whether the AHA/ASA and DSM-V criteria for VCI can distinguish between cases with predominantly vascular pathology and cases with mixed pathology. A total of 186 subjects were recruited from a cross-sectional memory clinic-based study at the National University Hospital, Singapore. All subjects underwent clinical and neuropsychological assessment, magnetic resonance imaging (MRI) and carbon 11-labeled Pittsburgh Compound B ([11C] PiB) positron emission tomography (PET) scans. Diagnosis of the etiological subtypes of VCI (probable vascular mild cognitive impairment (VaMCI), possible VaMCI, non-VaMCI, probable vascular dementia (VaD), possible VaD, non-VaD) were performed following AHA/ASA and DSM-V criteria. Brain amyloid burden was determined for each subject with standardized uptake value ratio (SUVR) values ⩾1.5 classified as amyloid positive. Using κ statistics, both criteria had excellent agreement for probable VaMCI, probable VaD, and possible VaD (κ = 1.00), and good for possible VaMCI (κ = 0.71). Using the AHA/ASA criteria, the amyloid positivity of probable VaMCI (3.8%) and probable VaD (15%) was significantly lower compared to possible VaMCI (26.7%), non-VaMCI (33.3%), possible VaD (73.3%), and non-VaD (76.2%) (p < 0.001). Similarly, using the DSM-V criteria, the amyloid positivity of probable VaMCI (3.8%) and probable VaD (15%) was significantly lower compared to possible VaMCI (26.3%), non-VaMCI (32.1%), possible VaD (73.3%), and non-VaD (76.2%) (p < 0.001). In both criteria, there was good agreement in differentiating individuals with non-VaD and possible VaD, with significantly higher (p < 0.001) global [11C]-PiB SUVR, from individuals with probable VaMCI and probable VaD, who had predominant vascular pathology. The AHA/ASA and DSM-V criteria for VCI can identify VCI cases with little to no concomitant amyloid pathology, hence supporting the utility of AHA/ASA and DSM-V criteria in diagnosing patients with predominant vascular pathology. Data supporting this study are available from the Memory Aging and Cognition Center, National University of Singapore. Access to the data is subject to approval and a data sharing agreement due to University policy.

Impaired Standing Balance in Older Adults with Cognitive Impairment after a Severe Fall

Introduction: Fall-related sequelae as well as balance and gait impairments are more pronounced in older adults who are cognitively impaired (OACI) compared to older adults who are cognitively healthy (OACH). Evidence is scarce about differences in standing balance and gait in OACH and OACI after a fall, even though these are major risks for recurrent falls. Thus, the aim of this study was to investigate early impairments in gait and balance, by adding inertial measurement units (IMUs) to a functional performance test in OACH and OACI after a severe fall with a presentation to the emergency department (ED) and immediate discharge. Methods: The study sample was stratified into participants with and without probable cognitive impairment using the result of the Montreal Cognitive Assessment total score (maximum of 30 points). The cutoff for probable cognitive impairment was set at ≤ 24. Standing balance and gait parameters were measured using three IMUs in n = 69 OACH (72.0 ± 8.2 years) and n = 76 OACI (78.7 ± 8.1 years). Data were collected at participants’ homes as part of a comprehensive geriatric assessment in the “SeFallED” study within 4 weeks after presentation to the ED after a severe fall (German Clinical Trials Register ID: 00025949). ANCOVA was used for statistical analysis, adjusted for age. Results: The data indicated significantly more sway for OACI compared to OACH during balance tasks, whereas no differences in gait behavior were found. In detail, differences in standing balance were revealed for mean velocity (m/s) during parallel stance with eyes open (ηp2 = 0.190, p < 0.001) and eyes closed on a balance cushion (ηp2 = 0.059, p = 0.029), as well as during tandem stance (ηp2 = 0.034, p = 0.044) between OACI and OACH. Further differences between the two groups were detected for path length (m/s2) during parallel stance with eyes open (ηp2 = 0.144, p < 0.001) and eyes closed (ηp2 = 0.044, p < 0.027) and for range (m/s2) during tandem (ηp2 = 0.036, p = 0.036) and parallel stance with eyes closed (ηp2 = 0.045, p = 0.032). Conclusion: Even though both groups have experienced a severe fall with presentation to the ED in the preceding 4 weeks, balance control among OACI indicated a higher fall risk than among OACH. Therefore, effective secondary fall prevention efforts have to be established, particularly for OACI.

Effects of physical exercise on cognition and glymphatic system of patients with mild cognitive impairment or Alzheimer’s disease – study protocol

Objective: To evaluate the impact of a multicomponent physical exercise program on clinical variables associated with the glymphatic clearance system, sleep-awake patterns, and cognitive function in individuals with mild cognitive impairment or mild Alzheimer’s disease. Methods: This is a single-center parallel randomized controlled trial involving pre- and post-intervention assessments. The intervention consists of a 12 (±3)-week multicomponent aerobic and resistance physical exercise program of moderate intensity divided into 2 groups: an experimental group (undergoing multicomponent training) and a control group (no intervention). Eligible participants are those diagnosed with probable mild cognitive impairment or mild Alzheimer’s disease. Expected results: Anticipated outcomes suggest that the multicomponent training protocol, incorporating both aerobic and resistance physical exercises at a moderate intensity, will yield improvements in glymphatic clearance dynamics, sleep-awake parameters, and performance on cognitive, functional, and behavioral tasks among eligible patients. Relevance: The need to move beyond cognitive clinical testing justifies our trial, which proposes an assessment employing neuroimaging techniques and the analysis of biomarkers present in cerebrospinal fluid in conjunction with clinical tests for physical and cognitive assessment.

Alzheimer’s disease biomarkers of amyloid and tau influence white matter neurite alterations in dementia with Lewy bodies: a NODDI study

AbstractBackgroundCo‐morbid Alzheimer’s disease (AD) pathology in the form of amyloid‐ß plaques and tau neurofibrillary tangles are frequently observed in people with probable dementia with Lewy bodies (DLB). Neurite Orientation Dispersion and Density Imaging (NODDI) is an emerging technique to characterize white matter (WM) tissue microstructure, although NODDI alterations and associations with AD biomarkers remain undefined in DLB. The objectives of this study are to compare NODDI and DTI parameters between DLB and controls and (ii) evaluate the pattern of DTI and NODDI changes associated with amyloid and tau deposition.MethodConsecutive patients within the DLB spectrum (n = 45), including probable DLB (n = 32) and probable Mild Cognitive Impairment with Lewy bodies (MCI‐LB) (n = 13) from the Mayo Clinic ADRC underwent multi‐shell diffusion MRI, [18F]‐Flortaucipir and [11C]‐PiB PET. A comparison group of 45 age‐ and gender‐matched clinically unimpaired controls (CU) was included. Voxelwise non‐parametric permutation models were used to determine pair‐wise group differences and assess the associations of AD biomarkers with fractional anisotropy (FA), mean diffusivity (MD), tissue‐weighted neurite density index (tNDI; NDI x (1 – Free water fraction)) and orientation dispersion index (ODI), controlling for age. Complementary analyses were performed using regions‐of‐interest (ROI) obtained from the JHU atlas.ResultCompared to CU, the DLB spectrum group exhibited widespread decreases in FA and tNDI and increases in MD and ODI, with the most pronounced effects in the cingulum bundles, uncinate, inferior and superior longitudinal fasciculi (Fig. 1). Greater [18F]‐Flortaucipir uptake was also associated with lower FA and tNDI, and higher MD and ODI in the DLB spectrum compared to CU, independently of age and [11C]‐PiB uptake (Fig. 2). In contrast, no associations were found between [11C]‐PiB uptake and any of the DTI or NODDI parameters. Complementary ROI analyses corroborated these findings.ConclusionWidespread loss of WM integrity was observed on DTI and NODDI in probable DLB and prodromal DLB. These findings were associated with greater cortical tau, but not with amyloid‐ß deposition. Although alpha‐synuclein pathology underlies the loss of WM integrity in DLB, amyloid‐independent tau pathology may also be an important influence on white matter integrity within the DLB spectrum.

Alzheimer’s disease biomarkers of amyloid and tau influence white matter neurite alterations in dementia with Lewy bodies: a NODDI study

AbstractBackgroundCo‐morbid Alzheimer’s disease (AD) pathology in the form of amyloid‐β plaques and tau neurofibrillary tangles are frequently observed in people with probable dementia with Lewy bodies (DLB). Neurite Orientation Dispersion and Density Imaging (NODDI) is an emerging technique to characterize white matter (WM) tissue microstructure, although NODDI alterations and associations with AD biomarkers remain undefined in DLB. The objectives of this study are to compare NODDI and DTI parameters between DLB and controls and (ii) evaluate the pattern of DTI and NODDI changes associated with amyloid and tau deposition.MethodConsecutive patients within the DLB spectrum (n = 45), including probable DLB (n = 32) and probable Mild Cognitive Impairment with Lewy bodies (MCI‐LB) (n = 13) from the Mayo Clinic ADRC underwent multi‐shell diffusion MRI, [18F]‐Flortaucipir and [11C]‐PiB PET. A comparison group of 45 age‐ and gender‐matched clinically unimpaired controls (CU) was included. Voxelwise non‐parametric permutation models were used to determine pair‐wise group differences and assess the associations of AD biomarkers with fractional anisotropy (FA), mean diffusivity (MD), tissue‐weighted neurite density index (tNDI; NDI x (1 – Free water fraction)) and orientation dispersion index (ODI), controlling for age. Complementary analyses were performed using regions‐of‐interest (ROI) obtained from the JHU atlas.ResultCompared to CU, the DLB spectrum group exhibited widespread decreases in FA and tNDI and increases in MD and ODI, with the most pronounced effects in the cingulum bundles, uncinate, inferior and superior longitudinal fasciculi (Fig. 1). Greater [18F]‐Flortaucipir uptake was also associated with lower FA and tNDI, and higher MD and ODI in the DLB spectrum compared to CU, independently of age and [11C]‐PiB uptake (Fig. 2). In contrast, no associations were found between [11C]‐PiB uptake and any of the DTI or NODDI parameters. Complementary ROI analyses corroborated these findings.ConclusionWidespread loss of WM integrity was observed on DTI and NODDI in probable DLB and prodromal DLB. These findings were associated with greater cortical tau, but not with amyloid‐β deposition. Although alpha‐synuclein pathology underlies the loss of WM integrity in DLB, amyloid‐independent tau pathology may also be an important influence on white matter integrity within the DLB spectrum.

Penerapan Aplikasi Mefuko (MMSE Untuk Fungsi Kognitif) Pada Lansia Dengan Demensia

An elderly person is someone who has reached the age of 60 years and over. One of the health problems that often occurs in the elderly is a decline in memory, learning and cognitive abilities in the elderly which causes them to have difficulty interacting and being difficult to understand. Conditions that affect cognitive abilities in the elderly are called dementia. Dementia is a chronic and progressive decline in memory and thinking function, causing disruption of functional activities. Nursing interventions that can be given to the elderly to improve cognitive function in the occurrence of dementia include brain gymnastics. The case study design used is descriptive research. The method used to collect data is using the Android-based MMSE (Mini Mental State Examination), namely MEFuKo (MMSE for Cognitive Function) to determine the level of dementia in the elderly. Brain exercise therapy (brain gym) is carried out for 7 consecutive days, 1 meeting per day with a duration of 15 minutes. Subject I's MMSE score before brain exercise therapy was 16 (presence of definite cognitive impairment) increased to 19 (presence of probable cognitive impairment) and there was an increase of 3 in total MMSE scores. The MMSE score in subject II before brain exercise therapy was 19 (possible cognitive impairment), after therapy the MMSE score became 23 (probable cognitive impairment) and there was an increase of 4 in total MMSE scores. The more activities you do, the less likely it is that seniors will experience a decline in cognitive function. The conclusion is that there was an increase in cognitive function in the two case study subjects which illustrate the application of brain gym therapy to cognitive function in elderly people with dementia. Brain exercise therapy is recommended to improve working memory function which can improve the quality of life of the elderly.

A comparative study of posterior cingulate metabolism in patients with mild cognitive impairment due to Parkinson's disease or Alzheimer's disease

Few comparative studies have assessed metabolic brain changes in cognitive impairment among neurodegenerative disorders, and the posterior cingulate cortex (PCC) is a metabolically active brain region with high involvement in multiple cognitive processes. Therefore, in this study, metabolic abnormalities of the PCC were compared in patients with mild cognitive impairment (MCI) due to Parkinson’s disease (PD) or Alzheimer’s disease (AD), as examined by proton magnetic resonance spectroscopy (1H-MRS). Thirty-eight patients with idiopathic PD, including 20 with mild cognitive impairment (PDMCI) and 18 with normal cognitive function (PDN), 18 patients with probable mild cognitive impairment (ADMCI), and 25 healthy elderly controls (HCs) were recruited and underwent PCC 1H-MRS scans. Compared with HCs, patients with PDMCI exhibited significantly reduced concentrations of N-acetyl aspartate (NAA), total NAA (tNAA), choline (Cho), glutathione (GSH), glutamate + glutamine (Glx) and total creatine (tCr), while ADMCI cases exhibited significantly elevated levels of myo-inositol (Ins) and Ins/tCr ratio, as well as reduced NAA/Ins ratio. No significant metabolic changes were detected in PDN subjects. Compared with ADMCI, reduced NAA, Ins and tCr concentrations were detected in PDMCI. Besides, ROC curve analysis revealed that tCr concentration could differentiate PDMCI from PDN with an AUC of 0.71, and NAA/Ins ratio could differentiate patients with MCI from controls with normal cognitive function with an AUC of 0.74. Patients with PDMCI and ADMCI exhibited distinct PCC metabolic 1H-MRS profiles. The findings suggested cognitively normal PD patients with low NAA and tCr in the PCC might be at risk of preclinical PDMCI, and Ins and/or NAA/MI ratio in the PCC should be reconsidered a possible biomarker of preclinical MCI in clinical practice. So, comparing PCC’s 1H-MRS profiles of cognitive impairment among neurodegenerative illnesses may provide useful information for better defining the disease process and elucidate possible treatment mechanisms.

Associations of dietary cholesterol and fat, blood lipids, and risk for dementia in older women vary by APOE genotype.

Whether apolipoprotein E's (APOE's) involvement in lipid metabolism contributes to Alzheimer's disease (AD) risk remains unknown. Incident probable dementia and cognitive impairment (probable dementia+mild cognitive impairment) were analyzed in relation to baseline serum lipids (total, low-density lipoprotein [LDL], high-density lipoprotein [HDL], non-HDL cholesterol, total-to-HDL, LDL-to-HDL, remnant cholesterol, and triglycerides) using Mendelian randomization in 5358 postmenopausal women from the Women's Health Initiative Memory Study. We also examined associations of baseline dietary cholesterol and fat with lipids based on APOE status. After an average of 11.13 years, less favorable lipid levels related to greater dementia and cognitive impairment risk. Dementia (odds ratio [OR]=3.13; 95% confidence interval [CI]: 2.31 to 4.24) and cognitive impairment (OR=2.38; 95% CI: 1.85 to 3.06) risk were greatest in relation to higher remnant cholesterol levels. Greater cholesterol consumption related to poorer lipids in APOE4+ compared to APOE3 carriers. APOE4+ carriers consuming more cholesterol had less favorable lipids, which were associated with greater dementia and cognitive impairment risk. Less favorable serum lipids were associated with higher dementia incidence. Mendelian randomization findings suggest causality between lipids and dementia. Lipid levels in older women may be clinical indicators of dementia risk. APOE4 carriers had poorest lipid profiles in relation to cholesterol consumption. APOE risk for dementia may be modifiable through lipid management.

HUBUNGAN ANTARA KEMAMPUAN KOGNITIF DAN AKTIVITAS SETIAP HARI LANJUT USIA DI PANTI JOMPO DINAS SOSIAL BINJAI

Impaired cognitive function in the elderly can have negative effects on the central nervous system, including decreased brain mass and reduced blood flow in the brain. This causes a decrease in interest in daily activities for the elderly. At the Binjai Social Service Nursing Home, many elderly people need assistance in carrying out their routines which previously could be done alone. Research was conducted to determine the relationship between cognitive abilities and daily activities in the elderly at the Binjai Social Service Nursing Home. The research method used is descriptive correlation with a cross-sectional approach. The population of this study were all elderly people at the UPT Social Service for the Elderly of the Binjai Social Service who were ≥ 60 years old, with a total of 160 people, and a sample of 114 people was taken using the Consecutive Sampling technique. Data were analyzed using the Spearman rho test. Research shows that the majority of the elderly experience probable cognitive impairment (50.0%) and the majority also experience a moderate level of dependence in carrying out daily activities (71.1%). With the Spearman rho test, it was found that there was a significant relationship between cognitive function and daily activities (p value = 0.000). Based on these findings, researchers recommend that the elderly improve their cognitive function in order to improve their ability to carry out daily activities. Thus, the elderly can remain independent and active in carrying out their routines every day.

Magnetoencephalography(MEG) spectral signature of cognitive impairment ‐ A perspective on pathophysiological changes with blood pressure

AbstractBackgroundSpectral ratios (e.g., resting‐state EEG alpha/theta power ratio), which index rhythmic brain activity, have been shown to distinguish early‐onset AD from healthy controls. Magnetoencephalographic (MEG) brain imaging offers advantages over EEG through its unique combination of excellent temporal as well as spatial precision for detecting brain activity. The purpose of this study is to compare MEG spectral activity in cognitively impaired and healthy controls with changes in systolic blood pressure (sbp), specifically focused in the frontal lobe as this region is known to be susceptible to hypertension related white matter degradation.MethodsSixteen cognitively impaired, including 13 possible and 3 probable mild cognitive impairment (MCI), (mean age 65.6 years, males/females: 5/11, Whites/Blacks: 11/5) and sixteen age, sex, and race matched healthy controls (mean age 62.4 years, males/females: 4/12, Whites/Blacks: 11/5) were recruited from an ongoing multiethnic community‐based study to complete six minutes of resting‐state MEG along with a T1w brain MRI. All MEG data underwent standard preprocessing. Resultant whole‐brain maps of spectral activity were filtered into six canonical frequency bands, including delta (2‐4 Hz), theta (5‐7 Hz), alpha (8‐12 Hz), beta (15‐29 Hz), gamma (30‐59 Hz) and high gamma (60‐90 Hz). Relative mean power of each frequency band, and spectral ratios of alpha/theta, beta/delta as well as a spectral slowing index [(alpha+beta+gamma)/(delta+theta)] were computed.ResultMean sbp was 135 mm Hg for both groups. Generalized linear regression models showed cognitive impairment was negatively associated with spectral ratios beta/delta and spectral slowing index. We also found a significant positive association between spectral ratios (beta/delta β = ‐0.0115, p = 0.0015; spectral slowing index β = ‐0.0125, p = 0.0144) and interaction of systolic blood pressure with cognitive impairment. Results are summarized in tables 1‐2.ConclusionLower spectral ratios have previously been demonstrated in individuals with AD. Somewhat surprisingly, our findings indicate that lower blood pressure is associated with lower values on these MEG metrics in cognitively impaired individuals. Interestingly, overtreatment of hypertension in elderly with MCI has been associated with greater cognitive decline. Thus, these results will be examined in a larger cohort and the analysis will be expanded to include anti‐hypertensive medication data to potentially explain the above findings.

The role of subjective cognitive complaints in self-management among haemodialysis patients: a cross-sectional study

BackgroundSubjective cognitive complaints refer to self-experienced difficulties with everyday cognitive tasks. Although there has been a fair amount of research on cognitive impairments and cognitive complaints in end-stage renal disease, the practical implications of these complaints remain unclear. The current study aims to examine the associations of cognitive complaints with sociodemographic and clinical variables, mood, as well as key patient-reported outcomes, i.e., self-efficacy, self-management skills, and treatment adherence.MethodsA total of 305 haemodialysis patients (mean age = 53.97 years, 42.6% female) completed the Kidney Disease Quality of Life Cognitive Function subscale, a brief measure of cognitive complaints. The recommended cut-off point of 60 was used to identify probable cognitive impairment. Measures of self-efficacy, self-management skills (i.e., symptom coping, health monitoring, health service navigation), treatment adherence, and mood symptoms were also administered. Between-group comparisons and correlational analyses were performed to examine associations of cognitive complaints with sociodemographic, clinical, and health behaviour variables. Mediation analyses were also conducted to investigate the mediating role of self-efficacy on the relationship between cognitive complaints and treatment adherence.ResultsNearly a quarter (23.0%) of haemodialysis patients reported cognitive complaints indicative of clinical impairments. Risk of probable impairments was higher for patients with hypertension, diabetes, those diagnosed with end-stage renal disease at an older age, and those with shorter time on dialysis. Subjective cognitive complaints (both rates of probable impairments as per cut-off and continuous scores) were significantly associated with lower disease and treatment self-efficacy, poorer self-management skills, lower treatment adherence, as well as higher symptoms of distress. Mediation analysis indicated that treatment self-efficacy mediated the relationship between cognitive complaints and treatment adherence.ConclusionsThe current study demonstrated the clinical characteristics of haemodialysis patients who report cognitive complaints indicative of probable cognitive impairments and showed the associations of these complaints with self-management outcomes. Future studies should adopt more comprehensive measures of cognitive complaints and longitudinal designs to confirm the current findings.

The association of sleep and cortical thickness in mild cognitive impairment.

We investigated whether device-measured sleep parameters are associated with cortical thickness in older adults with probable mild cognitive impairment (MCI). We performed a cross-sectional, exploratory analysis of sleep and structural MRI data. Sleep data were collected with MotionWatch8© actigraphy over 7days. We computed average and variability for sleep duration, sleep efficiency, and fragmentation index. T1-weighted MRI scans were used to measure cortical thickness in FreeSurfer. We employed surface-based analysis to determine the association between sleep measures and cortical thickness, adjusting for age, sex, Montreal Cognitive Assessment (MoCA) score, and sleep medication use. Our sample included 113 participants (age=73.1 [5.7], female=72 [63.7%]). Higher fragmentation index variability predicted lower cortical thickness in the left superior frontal gyrus (cluster size=970.9mm2, cluster-wise p=0.017, cortical thickness range=2.1mm2 to 3.0mm2), adjusting for age, sex, MoCA, and sleep medication. Our results suggest that higher variability in sleep fragmentation, an indicator of irregular sleep pattern, is linked to lower cortical thickness. Future longitudinal studies are needed to determine the directionality of these associations.