Discriminating speech traits of Alzheimer's disease assessed through a corpus of reading task for Spanish language

Although family satisfaction is recognized as a critical indicator of quality care for persons with serious illness, Spanish-language measures are limited. The study aims were to develop a Spanish translation of the short-form Family Satisfaction With End-of-Life Care (FAMCARE), investigate its psychometric properties in Hispanic caregivers to patients with Alzheimer’s disease and related dementias (ADRD; N = 317; 209 interviewed in Spanish), and add parameters to an existing item bank. Based on factor analyses, the measure was found to be essentially unidimensional. Reliabilities from a graded item response theory model were high; the average estimate was 0.93 for the total and Spanish-language subsample. Discrimination parameters were high, and the model fit adequate. This is the first study to examine the performance of the short-form FAMCARE measure among Hispanics and caregivers to patients with ADRD. The short-form measure can be recommended for Hispanics and caregivers to patients with ADRD.

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Concurrent validity of Spanish-language versions of the Mini-Mental State Examination, Mental Status Questionnaire, Information-Memory-Concentration Test, and Orientation-Memory-Concentration Test: Alzheimer's disease patients and nondemented elderly comparison subjects

Journal of the International Neuropsychological Society ◽

10.1017/s1355617700001302 ◽

1996 ◽

Vol 2 (4) ◽

pp. 286-298 ◽

Cited By ~ 17

Author(s):

I. Maribel Taussig ◽

Wendy J. Mack ◽

Victor W. Henderson

Keyword(s):

Alzheimer’S Disease ◽

Alzheimer's Disease ◽

Mental Status ◽

Mental State ◽

Mini Mental State Examination ◽

Functional Disability ◽

Spanish Language ◽

Spanish Speaking ◽

Concentration Test ◽

State Examination

AbstractOne-hundred fifty-eight elderly Spanish-speaking U.S. residents (81 patients diagnosed with Alzheimer's disease and 77 subjects without dementia) were tested with Spanish-language versions of four brief cognitive assessment instruments: the Mini-Mental State Examination (S-MMSE), the Mental Status Questionnaire (S-MSQ), the Information-Memory-Concentration test (S-IMC), and the Orientation-Memory-Conccntration test (S-OMC). Within-group performances were highly correlated for all four instruments. All tests distinguished between the demented and nondemented groups, but best discrimination was achieved with the S-IMC, which correctly classified 98% of subjects. This version was also the best predictor of functional disability, as measured by impairments in instrumental activities of daily living. Within the normal comparison group, neither gender nor a subject's monolingual/bilingual status affected test performance. These four Spanish-language cognitive screening tasks may aid in the evaluation of dementia among Spanish-speaking patients. (J1NS, 1996, 2, 286–298.)

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Validation of the Spanish-language version of the Relevant Outcome Scale for Alzheimer's Disease

Neurología (English Edition) ◽

10.1016/j.nrleng.2015.12.010 ◽

2017 ◽

Vol 32 (7) ◽

pp. 417-423

Author(s):

C. Carnero Pardo ◽

S. López Alcalde ◽

M. Espinosa García ◽

I. Sánchez Magro

Keyword(s):

Alzheimer’S Disease ◽

Alzheimer's Disease ◽

Spanish Language ◽

Language Version ◽

Relevant Outcome

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Cognitive control constrains memory attributions

Behavioral and Brain Sciences ◽

10.1017/s0140525x19001869 ◽

2019 ◽

Vol 42 ◽

Author(s):

Colleen M. Kelley ◽

Larry L. Jacoby

Keyword(s):

Alzheimer’S Disease ◽

Older Adults ◽

Alzheimer's Disease ◽

Traumatic Brain Injury ◽

Brain Injury ◽

Cognitive Control

Abstract Cognitive control constrains retrieval processing and so restricts what comes to mind as input to the attribution system. We review evidence that older adults, patients with Alzheimer's disease, and people with traumatic brain injury exert less cognitive control during retrieval, and so are susceptible to memory misattributions in the form of dramatic levels of false remembering.

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Review for "Expression profiling of precuneus layer III cathepsin D‐immunopositive pyramidal neurons in mild cognitive impairment and Alzheimer's disease: Evidence for neuronal signaling vulnerability"

10.1002/cne.24929/v2/review1 ◽

2020 ◽

Keyword(s):

Alzheimer’S Disease ◽

Alzheimer's Disease ◽

Cognitive Impairment ◽

Mild Cognitive Impairment ◽

Expression Profiling ◽

Cathepsin D ◽

Pyramidal Neurons ◽

Neuronal Signaling

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Formation of paired helical filaments in Alzheimer's disease

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100111628 ◽

1984 ◽

Vol 42 ◽

pp. 302-303

Author(s):

J. Metuzals ◽

D. F. Clapin ◽

V. Montpetit

Keyword(s):

Alzheimer’S Disease ◽

Alzheimer's Disease ◽

Frontal Lobe ◽

Giant Axon ◽

Paired Helical Filaments ◽

Normal Brain ◽

Protein Assemblies ◽

Electron Microscopic ◽

Helical Symmetry ◽

Structural Levels

Information on the conformation of paired helical filaments (PHF) and the neurofilamentous (NF) network is essential for an understanding of the mechanisms involved in the formation of the primary lesions of Alzheimer's disease (AD): tangles and plaques. The structural and chemical relationships between the NF and the PHF have to be clarified in order to discover the etiological factors of this disease. We are investigating by stereo electron microscopic and biochemical techniques frontal lobe biopsies from patients with AD and squid giant axon preparations. The helical nature of the lesion in AD is related to pathological alterations of basic properties of the nervous system due to the helical symmetry that exists at all hierarchic structural levels in the normal brain. Because of this helical symmetry of NF protein assemblies and PHF, the employment of structure reconstruction techniques to determine the conformation, particularly the handedness of these structures, is most promising. Figs. 1-3 are frontal lobe biopsies.

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Computer-aided methods for 3-D visualization of serial sections and thick biological specimens

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100129930 ◽

1992 ◽

Vol 50 (2) ◽

pp. 1060-1061

Author(s):

Mark Ellisman ◽

Maryann Martone ◽

Gabriel Soto ◽

Eleizer Masliah ◽

David Hessler ◽

...

Keyword(s):

Alzheimer’S Disease ◽

Alzheimer's Disease ◽

Three Dimensional ◽

Neuritic Plaque ◽

Dimensional Structure ◽

Data Sets ◽

Molecular Physiology ◽

Research Activities ◽

Computer Aided ◽

Dimensional Reconstruction

Structurally-oriented biologists examine cells, tissues, organelles and macromolecules in order to gain insight into cellular and molecular physiology by relating structure to function. The understanding of these structures can be greatly enhanced by the use of techniques for the visualization and quantitative analysis of three-dimensional structure. Three projects from current research activities will be presented in order to illustrate both the present capabilities of computer aided techniques as well as their limitations and future possibilities.The first project concerns the three-dimensional reconstruction of the neuritic plaques found in the brains of patients with Alzheimer's disease. We have developed a software package “Synu” for investigation of 3D data sets which has been used in conjunction with laser confocal light microscopy to study the structure of the neuritic plaque. Tissue sections of autopsy samples from patients with Alzheimer's disease were double-labeled for tau, a cytoskeletal marker for abnormal neurites, and synaptophysin, a marker of presynaptic terminals.

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Liquid crystalline ordering of paired helical filaments in neurofibrillary tangles of Alzheimer's disease

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100143365 ◽

1986 ◽

Vol 44 ◽

pp. 348-349

Author(s):

D.F. Clapin ◽

V.J.A. Montpetit

Keyword(s):

Alzheimer’S Disease ◽

Alzheimer's Disease ◽

Neurofibrillary Tangles ◽

Liquid Crystalline ◽

Amyloid Fibrils ◽

Geometric Analysis ◽

Paired Helical Filaments ◽

Microscopic Level ◽

Light Microscopic Level ◽

Regular Spacing

Alzheimer's disease is characterized by the accumulation of abnormal filamentous proteins. The most important of these are amyloid fibrils and paired helical filaments (PHF). PHF are located intraneuronally forming bundles called neurofibrillary tangles. The designation of these structures as "tangles" is appropriate at the light microscopic level. However, localized domains within individual tangles appear to demonstrate a regular spacing which may indicate a liquid crystalline phase. The purpose of this paper is to present a statistical geometric analysis of PHF packing.

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Paired helical filaments (PHF) in rats: An experimental animal model for Alzheimer's disease

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100128493 ◽

1987 ◽

Vol 45 ◽

pp. 842-843

Author(s):

V.J.A. Montpetit ◽

S. Dancea ◽

S.W. French ◽

D.F. Clapin

Keyword(s):

Alzheimer’S Disease ◽

Alzheimer's Disease ◽

Animal Model ◽

Paired Helical Filaments ◽

Ethanol Intoxication ◽

Drg Neurons ◽

Critical Difference ◽

Suitable Animal Model ◽

The Central Nervous System ◽

Chronic Ethanol Intoxication

A continuing problem in Alzheimer research is the lack of a suitable animal model for the disease. The absence of neurofibrillary tangles of paired helical filaments is the most critical difference in the processes by which the central nervous system ages in most species other than man. However, restricting consideration to single phenomena, one may identify animal models for specific aspects of Alzheimer's disease. Abnormal fibers resembling PHF have been observed in dorsal root ganglia (DRG) neurons of rats in a study of chronic ethanol intoxication and spontaneously in aged rats. We present in this report evidence that PHF-like filaments occur in ethanol-treated rats of young age. In control animals lesions similar in some respects to our observations of cytoskeletal pathology in pyridoxine induced neurotoxicity were observed.Male Wistar BR rats (Charles River Labs) weighing 350 to 400 g, were implanted with a single gastrostomy cannula and infused with a liquid diet containing 30% of total calories as fat plus ethanol or isocaloric dextrose.

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Amyloid β-peptide and Alzheimer's disease

Essays in Biochemistry ◽

10.1042/bse0560099 ◽

2014 ◽

Vol 56 ◽

pp. 99-110 ◽

Cited By ~ 15

Author(s):

David Allsop ◽

Jennifer Mayes

Keyword(s):

Alzheimer’S Disease ◽

Alzheimer's Disease ◽

Senile Plaques ◽

Strong Support ◽

Amyloid Β ◽

Amyloid Β Peptide ◽

Amyloid Cascade Hypothesis ◽

Sequence Of Events ◽

Aβ Amyloid ◽

Amyloid Cascade

One of the hallmarks of AD (Alzheimer's disease) is the formation of senile plaques in the brain, which contain fibrils composed of Aβ (amyloid β-peptide). According to the ‘amyloid cascade’ hypothesis, the aggregation of Aβ initiates a sequence of events leading to the formation of neurofibrillary tangles, neurodegeneration, and on to the main symptom of dementia. However, emphasis has now shifted away from fibrillar forms of Aβ and towards smaller and more soluble ‘oligomers’ as the main culprit in AD. The present chapter commences with a brief introduction to the disease and its current treatment, and then focuses on the formation of Aβ from the APP (amyloid precursor protein), the genetics of early-onset AD, which has provided strong support for the amyloid cascade hypothesis, and then on the development of new drugs aimed at reducing the load of cerebral Aβ, which is still the main hope for providing a more effective treatment for AD in the future.

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