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This database contains 173 studies, archived under the term: "etiology"

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Nutritional treatment of aged individuals with Alzheimer disease living at home with their spouses: study protocol for a randomized controlled trial

Background: Nutritional status often deteriorates in Alzheimer’s disease (AD). Less is known about whether nutritional care reverses malnutrition and its harmful consequences in AD. The aim of this study is to examine whether individualized nutritional care has an effect on weight, nutrition, health, physical functioning, and quality of life in older individuals with AD and […]

Effects of lexical-semantic treatment on memory in early Alzheimer disease: an observer-blinded randomized controlled trial

Background: Episodic memory and semantic abilities deteriorate early in Alzheimer disease (AD). Since the cognitive system includes interconnected and reciprocally influenced neuronal networks, the authors hypothesized that stimulation of lexical-semantic abilities may benefit semantically structured episodic memory.; Objective: To investigate the effects of lexical-semantic stimulation (LSS) on verbal communication and episodic memory in early AD.; […]

Using mental imagery to improve memory in patients with Alzheimer disease: trouble generating or remembering the mind’s eye?

This study was conducted to understand whether patients with mild Alzheimer disease (AD) could use general or self-referential mental imagery to improve their recognition of visually presented words. Experiment 1 showed that, unlike healthy controls, patients generally did not benefit from either type of imagery. To help determine whether the patients’ inability to benefit from […]

Mnemonic strategy training improves memory for object location associations in both healthy elderly and patients with amnestic mild cognitive impairment: a randomized, single-blind study

Objective: To evaluate the efficacy of mnemonic strategy training versus a matched-exposure control condition and to examine the relationship between training-related gains, neuropsychological abilities, and medial temporal lobe volumetrics in patients with amnestic mild cognitive impairment (aMCI) and age-matched healthy controls.; Method: Twenty-three of 45 screened healthy controls and 29 of 42 screened patients with […]

Effects of n-3 fatty acids on cognitive decline: a randomized, double-blind, placebo-controlled trial in stable myocardial infarction patients

Background: Epidemiological studies suggest a protective effect of n-3 fatty acids derived from fish (eicosapentaenoic acid [EPA] and docosahexaenoic acid [DHA]) against cognitive decline. For α-linolenic acid (ALA) obtained from vegetable sources, the effect on cognitive decline is unknown. We examined the effect of n-3 fatty acid supplementation on cognitive decline in coronary heart disease […]

Effects of a psychological group intervention on neuropsychiatric symptoms and communication in Alzheimer’s dementia

Background: Outcomes of a multicomponent psychological intervention designed for the treatment of neuropsychiatric symptoms, communicative and emotional deficits in patients with mild to moderate Alzheimer’s dementia were evaluated in a controlled trial. Core components of the program were milieu therapy interventions and music therapy.; Patients and Methods: A total of 49 patients were involved into […]

Tolerability of extended-release quetiapine fumarate compared with immediate-release quetiapine fumarate in older patients with Alzheimer’s disease with symptoms of psychosis and/or agitation: a randomised, double-blind, parallel-group study

Objective: The objective of this study was to assess the safety and tolerability of extended-release quetiapine fumarate (quetiapine XR) compared with quetiapine immediate-release (quetiapine IR) in older patients with Alzheimer’s disease with symptoms of psychosis and/or agitation.; Methods: This was a 6-week, double-blind, double-dummy, randomised study. Of the 109 patients screened, 100 were randomised to […]

A benefit-finding intervention for family caregivers of persons with Alzheimer disease: study protocol of a randomized controlled trial

Background: Caregivers of relatives with Alzheimer’s disease are highly stressed and at risk for physical and psychiatric conditions. Interventions are usually focused on providing caregivers with knowledge of dementia, skills, and/or support, to help them cope with the stress. This model, though true to a certain extent, ignores how caregiver stress is construed in the […]

Reduction of hippocampal hyperactivity improves cognition in amnestic mild cognitive impairment

Elevated hippocampal activation is observed in conditions that confer risk for Alzheimer’s disease, including amnestic mild cognitive impairment (aMCI). Studies in relevant animal models have indicated that overactivity in selective hippocampal circuits contributes to cognitive impairment. Here, we tested the effect of reducing hippocampal activation in aMCI. Under placebo treatment, hippocampal activation in the dentate […]

Study protocol for a randomized controlled trial of humor therapy in residential care: the Sydney Multisite Intervention of LaughterBosses and ElderClowns (SMILE)

Background: Humor therapy is a non-pharmacological intervention with potential to improve mood and quality of life for institutionalized older persons, including those with dementia. The primary aims of the Sydney Multisite Intervention of LaughterBosses and ElderClowns (SMILE) are to examine the effects of humor therapy on residents’ mood, quality of life, social engagement, and agitation.; […]

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