Search

Few studies have examined an association between mild traumatic brain injury (mTBI) and Alzheimer’s disease (AD). For this reason, we compared an AD dementia group with an mTBI history (n = 10) to a matched AD control group (n = 20) on measures of cognitive function, cerebral glucose metabolism, and markers of amyloid and tau deposition. Only a trend and medium-to-large effect size for higher phosphorylated and total tau was identified for the mTBI group. A history of mTBI may be associated with greater tau in AD, indicating a potential pathway for increasing risk for AD, though further evaluation with larger samples is needed.

Context Spiritual care (SC) is central to palliative care. However, a mismatch between patients’ desire for SC and physicians’ SC provision remains. The shortage of specialty-trained palliative physicians, necessitates that all physicians provide primary palliative care, including SC. Although several quantitative studies explore physicians’ barriers to SC, few qualitative studies and no longitudinal studies exist. Objective To gain in-depth understanding of factors influencing physicians’ ability to provide SC over time. Methods A 20-year longitudinal, individual interview study. In study year-1, we interviewed all residents in a USA primary care residency (full study-group) regarding SC beliefs, experiences and skills. The longitudinal study-group (PGY1 subgroup) was interviewed again in study-years 3, 11, and 20. Interviews were audio-recorded and transcribed. Four researchers analyzed transcripts using a grounded theory approach. IRB approval was obtained. Results We analyzed 66 interviews from 34 physicians. Physicians had diverse personal spiritual beliefs. Seven themes emerged from both groups (response rate 89%): patients’ needs; practice setting; beliefs regarding physician's role; personal spiritual beliefs; SC training; life experiences (professional, personal); self-care and reflection. Longitudinal interviews revealed thematic evolution and interactions over 20-years: patients’ needs and physicians’ belief in whole-person care remained primary motivators; cross-cultural SC communication training diminished impact of personal spiritual beliefs and worries; life experiences enhanced SC skills; work environment helped or hindered SC provision; and spiritual self-care/reflection fostered patient-centered, compassionate SC. Conclusion Facilitating SC provision by nonpalliative care specialists is complex and may require both individual and systems level interventions fostering motivation, SC skill development, and supportive work environments.

Aim This study aims to classify, describe, and compare the problems reported by care partners of adults with Alzheimer’s disease (AD) and Lewy body dementia (LBD) using the International Classification of Functioning Disability and Health (ICF) Methods Problems that care partners experience were collected during a problem-solving training intervention. The meaningful concepts were then extracted and linked to the ICF using a standardized linking technique. Results 402 meaningful concepts were extracted from 128 problems reported by care partners. 79.4% of the concepts were linkable to the ICF. “Body functions” was most frequently addressed followed by “Activities and participation.” LBD care partners reported more problems (M = 23.6 ± 13.4) on average than AD care partners (M = 19.4 ± 12.1). LBD care partners reported greater relative proportions of problems in mental function (emotional and sleep functions) than AD care partners. Conclusion This study suggests that the experience of LBD care partners may include significantly more challenges and may be more emotionally demanding than the care experience of AD care partners. Interventions designed to support care partners of adults with dementia may need to be tailored to meet the needs of care partners based on the care receiver’s type of dementia.

Several important questions regarding cognitive aging and dementia in older people with multiple sclerosis (PwMS) are the focus of this narrative review: Do older PwMS have worse cognitive decline compared to older people without MS? Can older PwMS develop dementia or other neurodegenerative diseases such as Alzheimer’s disease (AD) that may be accelerated due to MS? Are there any potential biomarkers that can help to determine the etiology of cognitive decline in older PwMS? What are the neural and cellular bases of cognitive aging and neurodegeneration in MS? Current evidence suggests that cognitive impairment in MS is distinguishable from that due to other neurodegenerative diseases, although older PwMS may present with accelerated cognitive decline. While dementia is prevalent in PwMS, there is currently no consensus on defining it. Cerebrospinal fluid and imaging biomarkers have the potential to identify disease processes linked to MS and other comorbidities—such as AD and vascular disease—in older PwMS, although more research is required. In conclusion, one should be aware that multiple underlying pathologies can coexist in older PwMS and cause cognitive decline. Future basic and clinical research will need to consider these complex factors to better understand the underlying pathophysiology, and to improve diagnostic accuracy.

On January 9th, 2020 a new and mysterious disease emerged out of Wuhan, China. This virus, SARS-CoV-2 (COVID), would sweep across the planet sparking a wave of lockdowns. During this time the Social VR platform VRChat saw unprecedented user numbers that coincided with social distancing restrictions established in the United States. By using uses and gratifications 2.0 and computer assisted content analysis of 259 Steam reviews this study found five key uses of the VRChat platform that were supported by seven affordances provided by the social media and virtual reality aspects of the platform.

Background and ObjectivesPatients with Alzheimer dementia display evidence of amyloid-related neurodegeneration. Our focus was to determine whether such patients also display evidence of a disease-targeting adaptive immune response mediated by CD4+ T cells. To test this hypothesis, we evaluated the CSF immune profiles of patients with Alzheimer clinical syndrome (ACS), who display clinically defined dementia.MethodsInnate and adaptive immune profiles of patients with ACS were measured using multicolor flow cytometry. CSF-derived CD4+ and CD8+ T-cell receptor repertoire genetics were measured using next-generation sequencing. Brain-specific autoantibody signatures of CSF-derived antibody pools were measured using array technology or ELISA. CSF from similar-age healthy controls (HCs) was used as a comparator cohort.ResultsInnate cells were expanded in the CSF of patients with ACS in comparison to HCs, and innate cell expansion increased with age in the patients with ACS, but not HCs. Despite innate cell expansion in the CSF, the frequency of total CD4+ T cells reduced with age in the patients with ACS. T-cell receptor repertoire genetics indicated that T-cell clonal expansion is enhanced, and diversity is reduced in the patients with ACS compared with similar-age HCs.DiscussionExamination of CSF indicates that CD4+ T cell–mediated adaptive immune responses are altered in patients with ACS. Understanding the underlying mechanisms affecting adaptive immunity will help move us toward the goal of slowing cognitive decline.

Objective Caregivers of individuals with Alzheimer's disease and related dementias (ADRD) often experience debilitating caregiver burden and emotional distress. To address these negative emotional consequences of caregiving, we will test and refine a strategy training intervention – Problem-Solving Training (PST) – that promotes self-efficacy and reduces caregiver burden and depressive symptoms. Previous research supports efficacy of PST; however, we do not know exactly how many PST sessions are needed or if post-training “boosters” are required to maintain PST benefits. Additionally, we translated and culturally-adapted PST into “Descubriendo Soluciones Juntos” (DSJ), our novel intervention for Spanish-speaking caregivers. Method In this 2 × 2 factorial design randomized controlled trial, we will test remotely-delivered PST/DSJ sessions for both English- and Spanish-speaking caregivers of persons with ADRD to determine the optimal number of PST/DSJ sessions and ongoing “booster” sessions needed to best help caregivers navigate their current and future needs. Aims 1) Compare the efficacy of three vs. six PST/DSJ sessions each with and without booster sessions for decreasing caregiver burden and depression and enhancing caregiver problem-solving; 2) Identify key factors associated with efficacy of PST/DSJ, including age, gender, primary language, relationship to care recipient, and uptake of the PST/DSJ strategy. Results These results will establish guidelines needed for an evidence-based, culturally-adapted, and implementable problem-solving intervention to reduce caregiver stress and burden and improve caregiver health and well-being. Conclusion This work promotes inclusion of diverse and underserved populations and advances therapeutic behavioral interventions that improve the lives of caregivers of individuals with chronic conditions.

Virtual Reality technologies have been challenging the way in which humans interact with computers since its implementation. When viewed through an artistic lens these interactions reveal a shift in the roles that content creators and the end user fulfill. VR technologies inherently demand that the user participates in the creation of the content while incorporated into the experience. This realization has dramatic implications for media and artistic works, as the traditional role of the content creator has been to dictate and frame the view in which the user interacts with the content, but with VR works much of the creators role has been stripped away and transferred to the viewer. This breaking of the traditional roles, accompanied by the transition away from “the rectangle,” or the flat rectangular plane which acts as a “canvas” for media and artistic works, requires a new approach to VR works.

Alzheimer's disease (AD), including its mild cognitive impairment (MCI) phase that may or may not progress into the AD, is the most ordinary form of dementia. It is extremely important to correctly identify patients during the MCI stage because this is the phase where AD may or may not develop. Thus, it is crucial to predict outcomes during this phase. Thus far, many researchers have worked on only using a single modality of a biomarker for the diagnosis of AD or MCI. Although recent studies show that a combination of one or more different biomarkers may provide complementary information for the diagnosis, it also increases the classification accuracy distinguishing between different groups. In this paper, we propose a novel machine learning-based framework to discriminate subjects with AD or MCI utilizing a combination of four different biomarkers: fluorodeoxyglucose positron emission tomography (FDG-PET), structural magnetic resonance imaging (sMRI), cerebrospinal fluid (CSF) protein levels, and Apolipoprotein-E (APOE) genotype. The Alzheimer's Disease Neuroimaging Initiative (ADNI) baseline dataset was used in this study. In total, there were 158 subjects for whom all four modalities of biomarker were available. Of the 158 subjects, 38 subjects were in the AD group, 82 subjects were in MCI groups (including 46 in MCIc [MCI converted; conversion to AD within 24 months of time period], and 36 in MCIs [MCI stable; no conversion to AD within 24 months of time period]), and the remaining 38 subjects were in the healthy control (HC) group. For each image, we extracted 246 regions of interest (as features) using the Brainnetome template image and NiftyReg toolbox, and later we combined these features with three CSF and two APOE genotype features obtained from the ADNI website for each subject using early fusion technique. Here, a different kernel-based multiclass support vector machine (SVM) classifier with a grid-search method was applied. Before passing the obtained features to the classifier, we have used truncated singular value decomposition (Truncated SVD) dimensionality reduction technique to reduce high dimensional features into a lower-dimensional feature. As a result, our combined method achieved an area under the receiver operating characteristic (AU-ROC) curve of 98.33, 93.59, 96.83, 94.64, 96.43, and 95.24% for AD vs. HC, MCIs vs. MCIc, AD vs. MCIs, AD vs. MCIc, HC vs. MCIc, and HC vs. MCIs subjects which are high relative to single modality results and other state-of-the-art approaches. Moreover, combined multimodal methods have improved the classification performance over the unimodal classification.

Six substituted vinylstannanes have been prepared. (E)- and (Z)-2-trimethylstannyl-2-butene, (1) and (2), respectively, 2-methyl-1-(trimethylstannyl) propene, (3), and 3-methyl-2-trimethylstannyl-2...