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Yen-Hua Shih, Ming-Chyi Pai, Ying-Che Huang, Jing-Jy Wang
PURPOSES: Sundown syndrome and sleep disturbances cause people with Alzheimer disease (PAD) and caregivers suffering. Studies have indicated that physical exercise could have a positive impact on sundown syndrome, yet no research has ever explored the relationship between walking and sundown syndrome. The aims of this study were to examine the relationship between sundown syndrome and sleep quality, and determine whether the severity of dementia, sleep quality, and weekly duration of walking influenced sundown syndrome, and to assess differences in sundown syndrome and sleep quality in relation to the accompanying walker and weekly duration of walking among people with Alzheimer disease living in the community...
January 2, 2017: Journal of the American Medical Directors Association
Duttagupta Subhadeep, B N Srikumar, B S Shankaranarayana Rao, Bindu M Kutty
Neurodegeneration of hippocampal structures is implicated in Alzheimer's disease (AD). Patients with AD exhibit 'sundown syndrome' featuring mood swings and anxiety. Although there are studies demonstrating circadian rhythm disruption associated with sundown phenomenon, the mechanisms underlying the emotional disturbances remain elusive. In the present study, we examined the relationship between subiculum (a key hippocampal output structure) and anxiety. Our study demonstrates that bilateral ventral subicular lesion (VSL) leads to anxiogenic behavior...
December 23, 2016: Physiology & Behavior
Jenny McCleery, Daniel A Cohen, Ann L Sharpley
BACKGROUND: Sleep disturbances, including reduced nocturnal sleep time, sleep fragmentation, nocturnal wandering, and daytime sleepiness are common clinical problems in dementia, and are associated with significant caregiver distress, increased healthcare costs, and institutionalisation. Drug treatment is often sought to alleviate these problems, but there is significant uncertainty about the efficacy and adverse effects of the various hypnotic drugs in this vulnerable population. OBJECTIVES: To assess the effects, including common adverse effects, of any drug treatment versus placebo for sleep disorders in people with dementia, through identification and analysis of all relevant randomised controlled trials (RCTs)...
16, 2016: Cochrane Database of Systematic Reviews
Massimo Venturelli, Alessio Sollima, Emiliano Cè, Eloisa Limonta, Angela V Bisconti, Anna Brasioli, Ettore Muti, Fabio Esposito
Sundowning syndrome (SDS) in patients with Alzheimer's disease (AD) is characterized by the intensification of behavioral disorders at sunset. Despite SDS etiology being unclear, a strong relationship between high cortisol levels and SDS has been reported. Aerobic exercise (AE) and cognitive training (CT) can reduce cortisol levels. However, whether SDS would benefit from AE and CT is still unknown. Therefore, the aim of this study was to investigate whether AE and CT treatments are effective in reducing SDS via downregulation of cortisol levels...
July 14, 2016: Journal of Alzheimer's Disease: JAD
Gowrishankar Gnanasekaran
The clinical phenomenon of early evening disruptive behavior also called "Sundowning" in elderly patients has been largely reported in the medical literature without a consistent diagnosis and criteria to define this phenomenon. The current understandings of sundowning are incomplete and current treatment strategies have relied heavily on use of antipsychotic medications, despite side effects and limited evidence to justify their use. A comprehensive understanding of the biogenesis of this phenomenon and mechanistic changes from oxidative pathways may provide novel information on completing the sundowning puzzle...
June 2016: Aging Clinical and Experimental Research
Ta-Chuan Yeh, Chin-Bin Yeh, Nian-Sheng Tzeng, Wei-Chung Mao
No abstract text is available yet for this article.
March 2015: Journal of Psychiatry & Neuroscience: JPN
M'hammed Ehsine, Mohamed Sadok Belkadhi, Mohammed Chaieb
The rhinoceros borer Oryctes agamemnon Burmeister (Coleoptera: Scarabaeidae) is a date palm insect pest that causes damage to trunk and roots of palm trees in several countries, including Tunisia, the United Arab Emirates (UAE), Oman, and Saudi Arabia. The aim of this study was to monitor the seasonal and nocturnal activities of this beetle. Experiments were performed on a date palm of Rjim Maatoug during a 6-yr period (2004-2007, 2009-2010). Field survey using light traps shows that O. agamemnon is a univoltine, with a single population peak...
2014: Journal of Insect Science
D Koppenhöfer, F Kettenbaum, A Susloparova, J K Y Law, X T Vu, T Schwab, K H Schäfer, S Ingebrandt
Dementia is one of the big medical challenges of our time with Alzheimer's, Huntington's and Parkinson's disease among its most common forms. In year 2000, 4.5 million people were diagnosed with Alzheimer's disease in the United States. In the case of Alzheimer's disease one of many contributing factors is a metabolic imbalance that leads to elevated oxidative stress levels. Consequences of this imbalance can be symptoms like apraxia, agnosia or sundowning. The use of field-effect transistors is a novel approach to study the effects of external stimuli on cells in vitro to provide researchers with a new tool for high resolution and high throughput studies to better understand cellular interaction and the effects of pharmacological compounds...
May 15, 2015: Biosensors & Bioelectronics
Hye-A Yeom, Nancy M Watson
PURPOSE: The purpose of this study was to describe the patterns of antecedents of catastrophic reactions (CRs) in nursing home residents with dementia in the United States. METHODS: A total of 229 catastrophic reaction events were the sample for this study. Ten antecedent variables were selected and analyzed using cluster analysis to address the patterns of antecedents of CRs in dementia. Data were obtained from field observation and a structured recording form over a 6-week period covering all 7 days of the week and all three shifts (i...
September 2009: Asian Nursing Research
Jenny McCleery, Daniel A Cohen, Ann L Sharpley
BACKGROUND: Sleep disturbances, including reduced nocturnal sleep time, sleep fragmentation, nocturnal wandering and daytime sleepiness are common clinical problems in dementia due to Alzheimer's disease (AD), and are associated with significant caregiver distress, increased healthcare costs and institutionalisation. Drug treatment is often sought to alleviate these problems, but there is significant uncertainty about the efficacy and adverse effects of the various hypnotic drugs in this vulnerable population...
March 21, 2014: Cochrane Database of Systematic Reviews
A Jennifer Morton, Skye R Rudiger, Nigel I Wood, Stephen J Sawiak, Gregory C Brown, Clive J Mclaughlan, Timothy R Kuchel, Russell G Snell, Richard L M Faull, C Simon Bawden
Insidious changes in behaviour herald the onset of progressive neurodegenerative disorders such as Huntington's disease (HD), sometimes years before overt symptoms are seen. Sleep and circadian disturbances are particularly disruptive symptoms in patients with neurological disorders, but they are difficult to measure in humans. Here we studied circadian behaviour in transgenic HD sheep expressing the full-length human huntingtin protein with an expanded CAG repeat mutation in the juvenile range. Young HD sheep with no other symptoms exhibited circadian behavioural abnormalities that worsened with age...
July 1, 2014: Human Molecular Genetics
Li Lin, Qiong-Xia Huang, Shu-Sheng Yang, Jiang Chu, Jian-Zhi Wang, Qing Tian
Alzheimer's disease (AD), an age-related neurodegenerative disorder with progressive cognition deficit, is characterized by extracellular senile plaques (SP) of aggregated β-amyloid (Aβ) and intracellular neurofibrillary tangles, mainly containing the hyperphosphorylated microtubule-associated protein tau. Multiple factors contribute to the etiology of AD in terms of initiation and progression. Melatonin is an endogenously produced hormone in the brain and decreases during aging and in patients with AD. Data from clinical trials indicate that melatonin supplementation improves sleep, ameliorates sundowning and slows down the progression of cognitive impairment in AD patients...
2013: International Journal of Molecular Sciences
J Stürmer
PURPOSE: There are an increasing number of patients with decreased vision due to dislocated posterior chamber lenses, with pseudoexfoliation being the main risk factor. Various techniques for refixation of the subluxated posterior chamber IOL have been described. Experience with our technique of IOL-explantation, anterior vitrectomy and implantation of an Artisan anterior chamber lens are presented. PATIENTS AND METHODS: In a retrospective study design all lens exchanges with implantation of an Artisan anterior chamber lens performed between 2003 and 2012 are analyzed...
April 2013: Klinische Monatsblätter Für Augenheilkunde
Sophia E de Rooij, Barbara C van Munster
The pineal hormone melatonin plays a major role in circadian sleep-wake rhythm in many mammals, including humans. Patients with acute confusional state or delirium, especially those with underlying cognitive impairment, frequently suffer from sleep disturbances and disturbed circadian rhythm. In this review, an overview is given of delirium and delirium symptoms that correspond with symptoms in dementia, such as sundowning, followed by a presentation of the circadian rhythm disorders in delirium in relation to melatonin deficiency...
August 2013: Rejuvenation Research
Davide Ferrazzoli, Francesco Sica, Giuseppe Sancesario
The term "sundowning" describes a clinical phenomenon characterized by late afternoon exacerbation of behavioural symptoms in dementia. Beyond this clinical definition, the debate around this concept is not properly solved, because many authors define it in different ways, mentioning various hypothetical etiological explanations. It represents a concrete problem, which is difficult to manage for physicians and caregivers, and is probably linked to various biological, psychological and social aspects. As recently reported, the sundowning phenomenon is a predictor of faster cognitive decline in Alzheimer's disease, and as such can represent a possible marker of frailty in this illness...
June 2013: CNS & Neurological Disorders Drug Targets
Monica Selent, Valery M Beau de Rochars, Danielle Stanek, Diana Bensyl, Barbara Martin, Nicole J Cohen, Phyllis Kozarsky, Carina Blackmore, Teal R Bell, Nina Marano, Paul M Arguin
BACKGROUND: In 2010, malaria caused approximately 216 million infections in people and 655,000 deaths. In the United States, imported malaria cases occur every year, primarily in returning travelers and immigrants from endemic countries. In 2010, five Plasmodium falciparum malaria cases occurred among crew members of one US commercial airline company (Airline A). This investigation aimed to assess the malaria prevention knowledge, attitudes, and practices (KAP) of Airline A crew members to provide information for potential interventions...
December 2012: Journal of Travel Medicine
Andrea M Yevchak, Melinda R Steis, Lois K Evans
The label sundown syndrome continues to be frequently used in long-term and acute care settings without consistent meaning. This study adds to the understanding of this label by synthesizing findings from research published since 1987 linked to sundown syndrome. The purpose of this systematic review is to describe, synthesize, and critique the theoretical definitions, operational definitions and measurement methods, prevalence, antecedent and precipitating factors and consequences, and effectiveness of interventions for sundown syndrome found in the published literature...
October 2012: Research in Gerontological Nursing
Verna Benner Carson
No abstract text is available yet for this article.
June 2012: Caring: National Association for Home Care Magazine
Ibrahim Ramahi, Andrew B Seidenberg, Ryan D Kennedy, Vaughan W Rees
Secondhand smoke levels were assessed among a convenience sample of 15 public venues in Amman, Jordan, during Ramadan. PM2.5 measurements were taken inside each venue pre- and post-'iftar', when daily smoking abstinence can be broken at sundown. Cigarette smoking was observed in all venues post-iftar, and the median PM(2.5) level among the 15 venues (285 µg/m(3)) was significantly higher than the pre-iftar level (11 µg/m(3); P < 0.001). Post-iftar PM(2.5) levels exceeded the World Health Organization standard for particulate pollution by 5-20-fold...
October 2013: European Journal of Public Health
Barbara M Tomotani, Danilo E F L Flores, Patrícia Tachinardi, José D Paliza, Gisele A Oda, Verônica S Valentinuzzi
South American subterranean rodents (Ctenomys aff. knighti), commonly known as tuco-tucos, display nocturnal, wheel-running behavior under light-dark (LD) conditions, and free-running periods >24 h in constant darkness (DD). However, several reports in the field suggested that a substantial amount of activity occurs during daylight hours, leading us to question whether circadian entrainment in the laboratory accurately reflects behavior in natural conditions. We compared circadian patterns of locomotor activity in DD of animals previously entrained to full laboratory LD cycles (LD12:12) with those of animals that were trapped directly from the field...
2012: PloS One
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