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1.
BMC Geriatr ; 24(1): 63, 2024 Jan 15.
Artículo en Inglés | MEDLINE | ID: mdl-38225544

RESUMEN

BACKGROUND: Anxiety is common in older adults and social isolation is one of the leading factors associated with their anxiety. However, what is unknown is how the relationship between social isolation and anxiety differs by cognitive status. Therefore, this study was conducted to (1) compare the level of social isolation and anxiety in older adults who developed probable dementia and mild cognitive impairment (MCI) to those who maintained normal cognitive function over 5 years; and (2) determine if cognitive impairment moderates the relationship between changes in social isolation and changes in anxiety over 5 years. METHODS: A secondary data analysis was conducted using the National Social Life, Health, and Aging Project (NSHAP): Wave 2 (2010-2011) and Wave 3 (2015-2016). The participants were categorized into three groups: Participants who developed probable dementia over 5 years (4.3%), developed probable MCI (19.1%), or maintained normal cognitive function (76.6%). Weighted linear regression analyses with a group interaction were used to examine the moderating effect of cognitive impairment on the relationship between changes in social isolation and anxiety. RESULTS: At the 5-year follow up, there were statistically significant differences in social isolation between the three groups (p = 0.043). Regression analyses showed that increased social isolation over time was related to increased anxiety over 5 years regardless of cognitive status after controlling for covariates (p = 0.017). CONCLUSIONS: The relationship between social isolation and anxiety was a universal phenomenon regardless of cognitive status. Tailored interventions targeting both people with or without cognitive impairment are needed to lessen social isolation and anxiety.


Asunto(s)
Disfunción Cognitiva , Demencia , Humanos , Anciano , Estudios Longitudinales , Disfunción Cognitiva/diagnóstico , Disfunción Cognitiva/epidemiología , Disfunción Cognitiva/psicología , Aislamiento Social/psicología , Ansiedad/diagnóstico , Ansiedad/epidemiología
2.
Aging Ment Health ; : 1-8, 2024 Mar 29.
Artículo en Inglés | MEDLINE | ID: mdl-38553253

RESUMEN

Objectives: Dimensions of religion and spirituality are associated with better emotional, physical, and cognitive health. However, the underlying physiological mechanisms are not well known. We investigated the relationship between dimensions of religion and spirituality with levels of C-reactive protein (CRP), a biomarker of systematic inflammation, in middle-aged and older adults in the United States.Methods: In this descriptive longitudinal study using secondary data, we used proportional odds models of the generalized estimating equation (GEE) to assess the association between religious beliefs and values and religious service attendance with CRP levels from respondents (n = 2,385) aged 50 years and older in the Health and Retirement Study from 2006 to 2014.Results: Middle-aged to older adults who reported higher religious beliefs and values had lower levels of CRP, controlling for age, sex, education, marital status, race, household income, and health, such as hypertension, diabetes, cancer, and body mass index (BMI).Conclusion: Religious beliefs and values are associated with lower CRP levels among middle-aged and older adults in the U.S. This study adds to the understanding of biological processes underlying the relationship between dimensions of religion and spirituality with better cognitive and physical health, potentially through inflammation.

3.
J Adv Nurs ; 80(8): 3414-3424, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38415935

RESUMEN

AIM: To highlight the value of utilizing the Listening Guide methodology for nursing research and provide an exemplar applying this methodology to explore a novel concept in an underrepresented group-inner strength in persons newly diagnosed with mild cognitive impairment along with their care partners. DESIGN: Methodology discussion paper. METHODS: The exemplar study used the Listening Guide methods for data elicitation and analysis. Methods included adaptations for the study population and novice qualitative researchers. RESULTS: The Listening Guide methodology with adaptations enabled the research team to centre the voices of persons living with mild cognitive impairment, highlight an abstract phenomenon and attend to the influences of the sociopolitical context. Further, this methodology helped address common challenges emerging qualitative researchers encounter, including understanding methods of application, engaging reflexively and immersing in the data. CONCLUSION: The Listening Guide is a voice-centred qualitative methodology that is well suited to foreground the experiences of groups underrepresented in research and explore emerging phenomena. IMPLICATIONS FOR NURSING: Nurses are central to striving for health equity. The Listening Guide methodology offers a valuable and accessible research tool to understand the experiences and needs of underrepresented groups and shape healthcare in response. IMPACT: The Listening Guide methodology can be broadly applied to research with persons with mild cognitive impairment, and other underrepresented groups, to explore other phenomena beyond inner strength and move the science forward in representing the perspectives of groups underrepresented by research. PATIENT OR PUBLIC CONTRIBUTION: Persons living with cognitive impairment and their care partners participated in study conceptualization, interview guide development, methods development and dissemination plans.


Asunto(s)
Disfunción Cognitiva , Investigación en Enfermería , Investigación Cualitativa , Humanos , Disfunción Cognitiva/enfermería , Investigación en Enfermería/métodos , Femenino , Proyectos de Investigación , Masculino , Persona de Mediana Edad , Adulto , Anciano , Grupos Minoritarios/psicología
4.
Telemed J E Health ; 30(5): 1239-1261, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38112565

RESUMEN

Objectives: This review aimed to assess characteristics of telehealth in pain management for adult patients with chronic pain and their family care partners and review current evidence of the effectiveness of telehealth for pain management. Based on the Revised Symptom Management model, this review identified types of chronic pain management strategies and symptom management outcomes delivered by telehealth. Methods: We conducted a systematic review of four electronic databases, PubMed, Cumulative Index to Nursing and Allied Health Literature, PsycINFO, and Embase, using combinations of keywords, including "telehealth," "caregivers," and "pain." Only interventions delivered online, including websites, mobile applications, phone calls, and videoconferencing, were included. To accurately characterize the features of each telehealth pain intervention, we employed a standardized checklist. Additionally, a summary table of the evidence was created. Results: We analyzed 17 studies that met the inclusion criteria, of which 14 were randomized controlled trials, 1 was a cohort study, and 2 were qualitative cohort studies. We grouped interventions based on content of the intervention for pain management (education, psychotherapy, reporting and consultation, and multicomponent intervention). The quality rating of studies was mostly moderately strong. Findings of interventions' effectiveness were showing heterogenous effects on variables, possibly due to different pain measurements and varying follow-up times. Significance of Results: Telehealth interventions can potentially increase access to care for patients with chronic pain and their families in a limited resource area. Telehealth technology is a feasible tool that may enhance clinicians' pain management efforts for patients with chronic pain and their family care partners. The results of this review can be used to guide telehealth pain assessment and evaluation for care partners, clinicians, and researchers and inform the design of future telehealth systems.


Asunto(s)
Cuidadores , Dolor Crónico , Manejo del Dolor , Telemedicina , Adulto , Femenino , Humanos , Masculino , Dolor Crónico/terapia , Manejo del Dolor/métodos
5.
BMC Geriatr ; 23(1): 547, 2023 09 09.
Artículo en Inglés | MEDLINE | ID: mdl-37684556

RESUMEN

BACKGROUND: Cognitive reserve (CR) is the ability to maintain cognitive performance despite brain pathology. CR is built through lifecourse experiences (e.g., education) and is a key construct in promoting healthy aging. However, the operationalization of CR and its estimated association with late-life cognition varies. The purpose of this study was to systematically examine the operationalization of CR and the relationship between its operationalization and late-life cognition. METHODS: We performed a comprehensive review of experiences (proxies) used to operationalize CR. The review informed quantitative analyses using data from 1366 participants of the Memory and Aging Project to examine 1) relationships between proxies and 2) the relationship between operationalization and late-life cognition. We also conducted a factor analysis with all identified CR experiences to create a composite lifecourse CR score. Generalized linear mixed models examined the relationship between operationalizations and global cognition, with secondary outcomes of five domains of cognition to examine consistency. RESULTS: Based on a review of 753 articles, we found the majority (92.3%) of the 28 commonly used proxies have weak to no correlation between one another. There was substantial variability in the association between operationalizations and late-life global cognition (median effect size: 0.99, IQR: 0.34 to 1.39). There was not strong consistency in the association between CR operationalizations and the five cognitive domains (mean consistency: 56.1%). The average estimate for the 28 operationalizations was 0.91 (SE = 0.48), compared to 2.48 (SE = 0.40) for the lifecourse score and it was associated with all five domains of cognition. CONCLUSIONS: Inconsistent methodology is theorized as a major limitation of CR research and barrier to identification of impactful experiences for healthy cognitive aging. Based on the weak associations, it is not surprising that the relationship between CR and late-life cognition is dependent on the experience used to operationalize CR. Scores using multiple experiences across the lifecourse may help overcome such limitations. Adherence to a lifecourse approach and collaborative movement towards a consensus operationalization of CR are imperative shifts in the study of CR that can better inform research on risk factors related to cognitive decline and ultimately aid in the promotion of healthy aging.


Asunto(s)
Disfunción Cognitiva , Reserva Cognitiva , Humanos , Cognición , Disfunción Cognitiva/diagnóstico , Disfunción Cognitiva/epidemiología , Proyectos de Investigación , Envejecimiento
6.
J Genet Couns ; 2023 Jul 10.
Artículo en Inglés | MEDLINE | ID: mdl-37424394

RESUMEN

With the increasing availability of predictive genetic testing for adult-onset neurodegenerative conditions, it is imperative that we better understand the impact of learning one's risk status. Frontotemporal degeneration (FTD) is the second most prevalent cause of early-onset dementia. About one-third of patients have an identifiable genetic etiology, and some genetic variants that cause FTD can also cause amyotrophic lateral sclerosis (ALS). To understand individuals' risk perception and broader experience of living at risk, we completed semi-structured telephone interviews with 14 asymptomatic adults who tested positive for a variant known to cause risk for FTD and/or ALS. We conducted a thematic analysis, and within the core topic of identity, we derived three themes: conceptualization of FTD and ALS as a threat to identity, enduring uncertainty and dread, and varying centrality of risk status to identity. FTD and ALS risk raised fundamental issues for participants related to the essence of personhood, challenged them to confront Cartesian dualism (the philosophy of mind-body separation), and exposed how time, relationships, and social roles have affected their understanding of the nature of the self. Our findings provide important insight into how being at genetic risk shapes an individual's identity. We conclude that genetic counseling interventions that allow for identity exploration, anticipatory guidance, and uncertainty management should be utilized when supporting persons at risk.

7.
Neuropsychol Rehabil ; : 1-16, 2023 Apr 26.
Artículo en Inglés | MEDLINE | ID: mdl-37128648

RESUMEN

This study aims to design and pilot an empirically based mobile application (ActiviDaily) to increase daily activity in persons with apathy and ADRD and test its feasibility and preliminary efficacy. ActiviDaily was developed to address impairments in goal-directed behaviour, including difficulty with initiation, planning, and motivation that contribute to apathy. Participants included patients with apathy and MCI, mild bvFTD, or mild AD and their caregivers. In Phase I, 6 patient-caregiver dyads participated in 1-week pilot testing and focus groups. In Phase II, 24 dyads completed 4 weeks of at-home ActiviDaily use. Baseline and follow-up visits included assessments of app usability, goal attainment, global cognition and functioning, apathy, and psychological symptoms. App use did not differ across diagnostic groups and was not associated with age, sex, education, global functioning or neuropsychiatric symptoms. Patients and care-partners reported high levels of satisfaction and usability, and care-partner usability rating predicted app use. At follow-up, participants showed significant improvement in goal achievement for all goal types combined. Participant goal-directed behaviour increased after 4 weeks of ActiviDaily use. Patients and caregivers reported good usability and user satisfaction. Our findings support the feasibility and efficacy of mobile-health applications to increase goal-directed behaviour in ADRD.

8.
Geriatr Nurs ; 54: 178-183, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37797545

RESUMEN

Respite care provides alternative care for persons living with dementia (PLWD) and is intended to alleviate the burden of caregiving. However, the evaluation of respite programs is limited. Time Out Weekly Smile (TOWS) is a virtual intergenerational respite care program designed to meet the needs of PLWD and their care partners and provide allied health students opportunities to serve as respite volunteers. This multi-method pilot study aimed to evaluate the experience of TOWS participation for all (i.e., care partners, PLWD, students) and identify outcomes of interest for future efficacy studies. Semi-structured interviews with all participants after experiencing TOWS were analyzed using conventional content analysis methods and student surveys of dementia attitudes were summarized. Results demonstrated lasting mutual benefits for all participants including social connection and creating meaning. Our findings suggest that including all respite care participants in future efficacy studies will elucidate the wide impact of respite care programs.


Asunto(s)
Cuidadores , Demencia , Humanos , Proyectos Piloto
9.
Acta Neuropathol ; 143(3): 363-382, 2022 03.
Artículo en Inglés | MEDLINE | ID: mdl-34997851

RESUMEN

Frontotemporal lobar degeneration (FTLD) with either tau (FTLD-tau) or TDP-43 (FTLD-TDP) inclusions are distinct proteinopathies that frequently cause similar frontotemporal dementia (FTD) clinical syndromes. FTD syndromes often display macroscopic signatures of neurodegeneration at the level of regions and networks, but it is unclear if subregional laminar pathology display patterns unique to proteinopathy or clinical syndrome. We hypothesized that FTLD-tau and FTLD-TDP accumulate pathology in relatively distinct cortical layers independent of clinical syndrome, with greater involvement of lower layers in FTLD-tau. The current study examined 170 patients with either FTLD-tau (n = 73) or FTLD-TDP (n = 97) spanning dementia and motor phenotypes in the FTD spectrum. We digitally measured the percent area occupied by tau and TDP-43 pathology in upper layers (I-III), lower layers (IV-VI), and juxtacortical white matter (WM) from isocortical regions in both hemispheres where available. Linear mixed-effects models compared ratios of upper to lower layer pathology between FTLD groups and investigated relationships with regions, WM pathology, and global cognitive impairment while adjusting for demographics. We found lower ratios of layer pathology in FTLD-tau and higher ratios of layer pathology in FTLD-TDP, reflecting lower layer-predominant tau pathology and upper layer-predominant TDP-43 pathology, respectively (p < 0.001). FTLD-tau displayed lower ratios of layer pathology related to greater WM tau pathology (p = 0.002) and to earlier involved/severe pathology regions (p = 0.007). In contrast, FTLD-TDP displayed higher ratios of layer pathology not related to either WM pathology or regional severity. Greater cognitive impairment was associated with higher ratios of layer pathology in FTLD-tau (p = 0.018), but was not related to ratios of layer pathology in FTLD-TDP. Lower layer-predominant tau pathology and upper layer-predominant TDP-43 pathology are proteinopathy-specific, regardless of clinical syndromes or regional networks that define these syndromes. Thus, patterns of laminar change may provide a useful anatomical framework for investigating how degeneration of select cells and corresponding laminar circuits influence large-scale networks and clinical symptomology in FTLD.


Asunto(s)
Demencia Frontotemporal , Degeneración Lobar Frontotemporal , Sustancia Blanca , Demencia Frontotemporal/patología , Degeneración Lobar Frontotemporal/patología , Humanos , Sustancia Blanca/patología , Proteínas tau/metabolismo
10.
Artículo en Inglés | MEDLINE | ID: mdl-34997619

RESUMEN

OBJECTIVES: Social isolation among older adults with cognitive impairment is understudied. The purpose of this study is to examine the relationship between social isolation and anxiety in people with cognitive impairment in the United States. METHODS/DESIGN: Secondary data analyses were conducted using the National Social Life, Health, and Aging Project (NSHAP) Wave 2 (2010-2011) dataset which includes a nationally representative sample of American older adults living at home. A total of 1343 people who had probable cognitive impairment measured by a Montreal Cognitive Assessment (MoCA) score of 22 or less were selected. Anxiety was measured using the anxiety measure of Hospital Anxiety and Depression Scale (HADS-A) and social isolation was measured using Perceived Social Isolation Scale. A weighted multivariable linear regression analysis and weighted F tests were used to examine the relationship between social isolation and anxiety. RESULTS: We observed that greater social isolation was related to increased anxiety in people with cognitive impairment (coefficients = 0.7242, t = 2.51, p = 0.015), adjusting for severity of cognitive impairment, race, pain, depression, activities of daily living, and instrumental activities of daily living. Weighted F tests showed that persons with clinically significant anxiety (HADS-A ≥ 8) had higher levels of loneliness, including feeling a lack of companionship, feeling left out, and greater social isolation. CONCLUSIONS: The results of our study suggest that people with cognitive impairment can feel social isolation and it may contribute to their anxiety. Health care professionals, family, and friends of people with cognitive impairment should pay greater attention to social isolation of their loved ones.


Asunto(s)
Actividades Cotidianas , Disfunción Cognitiva , Anciano , Ansiedad/epidemiología , Disfunción Cognitiva/epidemiología , Disfunción Cognitiva/psicología , Humanos , Soledad/psicología , Aislamiento Social/psicología , Estados Unidos/epidemiología
11.
Acta Neuropathol ; 142(2): 243-257, 2021 08.
Artículo en Inglés | MEDLINE | ID: mdl-33950293

RESUMEN

Progressive supranuclear palsy (PSP) and corticobasal degeneration (CBD) are neuropathologic subtypes of frontotemporal lobar degeneration with tau inclusions (FTLD-tau), primary tauopathies in which intracellular tau aggregation contributes to neurodegeneration. Gosuranemab (BIIB092) is a humanized monoclonal antibody that binds to N-terminal tau. While Gosuranemab passive immunotherapy trials for PSP failed to demonstrate clinical benefit, Gosuranemab reduced N-terminal tau in the cerebrospinal fluid of transgenic mouse models and PSP patients. However, the neuropathologic sequelae of Gosuranemab have not been described. In this present study, we examined the brain tissue of three individuals who received Gosuranemab. Post-mortem human brain tissues were studied using immunohistochemistry to identify astrocytic and microglial differences between immunized cases and a cohort of unimmunized PSP, CBD and aging controls. Gosuranemab immunotherapy was not associated with clearance of neuropathologic FTLD-tau inclusions. However, treatment-associated changes were observed including the presence of perivascular vesicular astrocytes (PVA) with tau accumulation within lysosomes. PVAs were morphologically and immunophenotypically distinct from the tufted astrocytes seen in PSP, granular fuzzy astrocytes (GFA) seen in aging, and astrocytic plaques seen in CBD. Additional glial responses included increased reactive gliosis consisting of bushy astrocytosis and accumulation of rod microglia. Together, these neuropathologic findings suggest that Gosuranemab may be associated with a glial response including accumulation of tau within astrocytic lysosomes.


Asunto(s)
Degeneración Lobar Frontotemporal/tratamiento farmacológico , Lisosomas/metabolismo , Neuroglía/metabolismo , Tauopatías/tratamiento farmacológico , Proteínas tau/metabolismo , Anciano , Anciano de 80 o más Años , Astrocitos/inmunología , Astrocitos/metabolismo , Astrocitos/patología , Encéfalo/inmunología , Encéfalo/patología , Degeneración Lobar Frontotemporal/metabolismo , Humanos , Masculino , Persona de Mediana Edad , Neuroglía/inmunología , Neuroglía/patología , Neuronas/patología , Tauopatías/inmunología , Tauopatías/patología , Proteínas tau/inmunología
12.
Arch Psychiatr Nurs ; 34(5): 281-287, 2020 10.
Artículo en Inglés | MEDLINE | ID: mdl-33032747

RESUMEN

This article provides a brief overview of the early development of geropsychiatric nursing (GPN) as background for examining its advancement subsequent to the 2010 Future of Nursing (FON) Report. The FON's education, practice and leadership recommendations form the three pillars that have supported geropsychiatric nursing's continuing evolution, framed within a practice and policy perspective. Lessons learned are relevant to developing the next phase of FON recommendations. The importance of overcoming challenges faced by the field of GPN is supported by the aging global population, the directions of nursing as a discipline, and the clear necessity of an intra- and inter-professional approach to mental health and aging.


Asunto(s)
Educación en Enfermería , Geriatría , Liderazgo , Investigación en Educación de Enfermería , Enfermería Psiquiátrica/organización & administración , Conocimientos, Actitudes y Práctica en Salud , Humanos
13.
Geriatr Nurs ; 41(6): 852-862, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32571585

RESUMEN

OBJECTIVES: The purpose of this integrative review was to examine factors related to the presence of anxiety in person with dementia (PWD) and to identify potentially modifiable factors among them. METHODS: An integrative review was conducted using PsycINFO, CINAHL, AgeLine, PubMed, Embase, Web of Science, and Scopus. Among 1856 studies identified, 27 studies were included. RESULTS: A number of modifiable factors associated with anxiety were identified. Individual level factors included pain, physical health, physical functioning, fatigue, sleep disturbance, disclosure of diagnosis, embarrassment about memory problems, separation from caregivers, views about oneself and others, social rejection, social isolation, and interactions with others. Caregiver factors associated with anxiety in PWD included caregiver stress, caregiver's negative reactions towards the behavioral problems of PWD, and competence about caregiving. CONCLUSION: The results of this review can be used to identify potential targets for interventions to reduce for anxiety in persons with dementia.


Asunto(s)
Demencia , Trastornos del Sueño-Vigilia , Ansiedad , Cuidadores , Humanos , Aislamiento Social
14.
Int J Geriatr Psychiatry ; 32(5): 574-581, 2017 05.
Artículo en Inglés | MEDLINE | ID: mdl-27122004

RESUMEN

OBJECTIVE: To determine (1) whether delirium severity was associated with Apolipoprotein E (APOE) genotype status and occupational complexity, a measure of cognitive reserve, in individuals with delirium superimposed on dementia; and (2) whether decline in delirium severity was associated with these same factors over a post-acute care (PAC) stay. METHODS: Control group data (n = 142) from a completed randomized clinical trial were used to address the aims of the study. Delirium severity was calculated by combining items from the Confusion Assessment Method and the Montreal Cognitive Assessment. APOE ε4 carriers versus non-carriers were considered. Occupational complexity, a measure of cognitive reserve, was derived from the Lifetime of Experiences Questionnaire. Covariates examined included age, gender, education, Clinical Dementia Rating Scale, and the Charlson comorbidity score. Data were nested (i.e., days nested within persons) and analyzed using multilevel models. RESULTS: The presence of an APOE ε4 allele and higher Clinical Dementia Rating Scale were associated with greater delirium severity at baseline. The presence of an APOE ε4 allele was also associated with greater delirium severity averaged across the PAC stay. Occupational complexity was not associated with baseline delirium severity or average daily delirium severity; however, individuals with low occupational complexity showed a significant decreased in delirium severity during the course of their PAC stay. CONCLUSIONS: Individual differences, including genetic factors and level of cognitive reserve, contribute to the severity of delirium in older adults with dementia. Copyright © 2016 John Wiley & Sons, Ltd.


Asunto(s)
Apolipoproteína E4/genética , Reserva Cognitiva/fisiología , Delirio/etiología , Delirio/genética , Demencia/psicología , Interacción Gen-Ambiente , Anciano , Anciano de 80 o más Años , Alelos , Femenino , Genotipo , Humanos , Masculino , Escalas de Valoración Psiquiátrica , Factores de Riesgo , Índice de Severidad de la Enfermedad
15.
Nurs Outlook ; 65(5): 515-529, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28826872

RESUMEN

BACKGROUND: Behavioral and psychological symptoms of dementia (BPSD) are prevalent in people with neurodegenerative diseases. PURPOSE: In this scoping review the Kales, Gitlin and Lykestos framework is used to answer the question: What high quality evidence exists for the patient, caregiver and environmental determinants of five specific BPSD: aggression, agitation, apathy, depression and psychosis? METHOD: An a priori review protocol was developed; 692 of 6013 articles retrieved in the search were deemed eligible for review. Gough's Weight of Evidence Framework and the Cochrane Collaboration's tool for assessing risk of bias were used. The findings from 56 high quality/low bias articles are summarized. DISCUSSION: Each symptom had its own set of determinants, but many were common across several symptoms: neurodegeneration, type of dementia, severity of cognitive impairments, and declining functional abilities, and to a lesser extent, caregiver burden and communication. CONCLUSION: Research and policy implications are relevant to the National Plan to Address Alzheimer's Disease.


Asunto(s)
Agresión , Enfermedad de Alzheimer/fisiopatología , Apatía , Demencia/fisiopatología , Depresión/fisiopatología , Agitación Psicomotora/fisiopatología , Trastornos Psicóticos/fisiopatología , Anciano , Anciano de 80 o más Años , Enfermedad de Alzheimer/complicaciones , Demencia/complicaciones , Depresión/etiología , Femenino , Humanos , Masculino , Persona de Mediana Edad , Agitación Psicomotora/etiología , Trastornos Psicóticos/etiología
17.
Neuroimage ; 84: 698-711, 2014 Jan 01.
Artículo en Inglés | MEDLINE | ID: mdl-24096125

RESUMEN

This study establishes that sparse canonical correlation analysis (SCCAN) identifies generalizable, structural MRI-derived cortical networks that relate to five distinct categories of cognition. We obtain multivariate psychometrics from the domain-specific sub-scales of the Philadelphia Brief Assessment of Cognition (PBAC). By using a training and separate testing stage, we find that PBAC-defined cognitive domains of language, visuospatial functioning, episodic memory, executive control, and social functioning correlate with unique and distributed areas of gray matter (GM). In contrast, a parallel univariate framework fails to identify, from the training data, regions that are also significant in the left-out test dataset. The cohort includes164 patients with Alzheimer's disease, behavioral-variant frontotemporal dementia, semantic variant primary progressive aphasia, non-fluent/agrammatic primary progressive aphasia, or corticobasal syndrome. The analysis is implemented with open-source software for which we provide examples in the text. In conclusion, we show that multivariate techniques identify biologically-plausible brain regions supporting specific cognitive domains. The findings are identified in training data and confirmed in test data.


Asunto(s)
Encéfalo/patología , Encéfalo/fisiopatología , Cognición/fisiología , Enfermedades Neurodegenerativas/patología , Enfermedades Neurodegenerativas/fisiopatología , Anciano , Atrofia , Femenino , Humanos , Procesamiento de Imagen Asistido por Computador , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad , Análisis Multivariante , Pruebas Neuropsicológicas
18.
Cogn Behav Neurol ; 27(4): 206-14, 2014 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-25539040

RESUMEN

OBJECTIVE: To relate changes in fractional anisotropy associated with behavioral variant frontotemporal dementia to measures of apathy and disinhibition. BACKGROUND: Apathy and disinhibition are the 2 most common behavioral features of behavioral variant frontotemporal dementia, and these symptoms are associated with accelerated patient decline and caregiver stress. However, little is known about how white matter disease contributes to these symptoms. METHODS: We collected neuropsychiatric data, volumetric magnetic resonance imaging, and diffusion-weighted imaging in 11 patients who met published criteria for behavioral variant frontotemporal dementia and had an autopsy-validated cerebrospinal fluid profile consistent with frontotemporal lobar degeneration. We also collected imaging data on 34 healthy seniors for analyses defining regions of disease in the patients. We calculated and analyzed fractional anisotropy with a white matter tract-specific method. This approach uses anatomically guided data reduction to increase sensitivity, and localizes results within canonically defined tracts. We used nonparametric, cluster-based statistical analysis to relate fractional anisotropy to neuropsychiatric measures of apathy and disinhibition. RESULTS: The patients with behavioral variant frontotemporal dementia had widespread reductions in fractional anisotropy in anterior portions of frontal and temporal white matter, compared to the controls. Fractional anisotropy correlated with apathy in the left uncinate fasciculus and with disinhibition in the right corona radiata. CONCLUSIONS: In patients with behavioral variant frontotemporal dementia, apathy and disinhibition are associated with distinct regions of white matter disease. The implicated fiber tracts likely support frontotemporal networks that are involved in goal-directed behavior.


Asunto(s)
Apatía , Demencia Frontotemporal/psicología , Degeneración Lobar Frontotemporal/psicología , Leucoencefalopatías/psicología , Sustancia Blanca/patología , Anciano , Síntomas Conductuales/etiología , Imagen de Difusión por Resonancia Magnética , Femenino , Demencia Frontotemporal/patología , Degeneración Lobar Frontotemporal/patología , Humanos , Inhibición Psicológica , Leucoencefalopatías/patología , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad , Pruebas Neuropsicológicas
19.
J Gerontol Nurs ; 40(10): 58-65, 2014 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-25199154

RESUMEN

Apathy, a reduction in goal-directed behavior (GDB), affects 90% of individuals with behavioral variant frontotemporal degeneration, which is a common cause of early onset neurodegenerative disease. The cognitive and neural impairments associated with apathy make it difficult to initiate, plan, and self-motivate activities toward a specific goal, such as dressing or bathing. These impairments are associated with significant decline in functional ability, caregiver burden, and increased cost of care due to early institutionalization. The current article reviews the evidence suggesting that apathy arises from the interruption of one or any combination of three GDB processes: initiation, planning, and motivation. From this perspective, three subtypes of apathy related to dysfunction at the level of GDB and the corresponding neuroanatomy are explored. Further research is required to confirm and measure these subtypes of apathy for use in clinical and research settings. A more precise classification of apathy by subtype will allow implementation of the most appropriate person-centered, individualized therapy.


Asunto(s)
Actividades Cotidianas/psicología , Apatía , Cuidadores/psicología , Demencia Frontotemporal/enfermería , Demencia Frontotemporal/psicología , Motivación , Atención Dirigida al Paciente , Demencia Frontotemporal/clasificación , Demencia Frontotemporal/diagnóstico , Enfermería Geriátrica , Humanos , Mejoramiento de la Calidad
20.
Parkinsonism Relat Disord ; 120: 105983, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38183891

RESUMEN

BACKGROUND: Impairment in goal-directed behavior (GDB) contributes to apathy, a prevalent syndrome in Parkinson's disease (PD). The Philadelphia Apathy Computerized Task (PACT) is a performance-based measure of GDB that may be less confounded by reduced patient insight, cognitive impairment, and care partner burnout. OBJECTIVE: To examine how the PACT is related to patient function and care partner burden. METHODS: PD patients with normal cognition (n = 19) or mild cognitive impairment (n = 14) and their care partners were recruited. Participants completed the PACT, a computerized paradigm consisting of subtasks specific to each component of GDB: initiation, motivation, and planning. Care partners completed the Zarit Burden Interview (ZBI) and the Penn Parkinson's Daily Activities Questionnaire (PDAQ-15). The associations between mean latency on each PACT subtask and ZBI and PDAQ-15 scores, respectively, were tested using Spearman's rank correlation coefficients. Significant associations were further delineated using multivariate regression with the following covariates: age, years of education, MoCA score, daily levodopa equivalency dose, UPDRS Part III score, and GDS-15 score. RESULTS: Worse performance on the planning subtask of the PACT related to higher ZBI scores and lower PDAQ-15 scores when adjusting for covariates. Decreased initiation was associated with higher ZBI and decreased motivation with lower PDAQ-15. CONCLUSIONS: Specific components of the PACT are related to patient and care partner outcomes in PD. The main advantage of this measure is to minimize the confounds of poor insight and care partner distress. We propose future research directions to refine the PACT for potential use in research and clinical practice.


Asunto(s)
Apatía , Disfunción Cognitiva , Enfermedad de Parkinson , Humanos , Enfermedad de Parkinson/complicaciones , Cuidadores/psicología , Actividades Cotidianas , Disfunción Cognitiva/complicaciones
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