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https://www.readbyqxmd.com/read/28619181/multifactorial-sleep-disturbance-in-parkinson-s-disease
#1
REVIEW
J Andrew Albers, Pratap Chand, A Michael Anch
Parkinson's disease (PD) is the second most common neurodegenerative disorder, ranking only behind Alzheimer's disease and affecting 2% of the population over the age of 65. Pathophysiologically, PD is characterized by selective degeneration of the dopaminergic neurons of the substantia nigra pars compacta (SNpc) and striatal dopamine depletion. Patients may also exhibit mild-to-severe degeneration of other central and peripheral nervous tissues. The most dramatic symptoms of the disease are profound dopamine-responsive motor disturbances, including bradykinesia, akinesia, rigidity, resting tremor, and postural instability...
July 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28611660/neurodegeneration-and-the-circadian-clock
#2
REVIEW
Suzanne Hood, Shimon Amir
Despite varied etiologies and symptoms, several neurodegenerative diseases-specifically, Alzheimer's (AD), Parkinson's (PD), and Huntington's diseases (HDs)-share the common feature of abnormal circadian rhythms, such as those in behavior (e.g., disrupted sleep/wake cycles), physiological processes (e.g., diminished hormone release) and biochemical activities (e.g., antioxidant production). Circadian disturbances are among the earliest symptoms of these diseases, and the molecular mechanisms of the circadian system are suspected to play a pivotal, and possibly causal, role in their natural histories...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28551028/bidirectional-interactions-between-diabetes-and-alzheimer-s-disease
#3
REVIEW
Mitsuru Shinohara, Naoyuki Sato
Clinical studies have indicated that diabetes is associated with Alzheimer's disease (AD) and neurodegeneration. However, the mechanisms underlying this association have not been fully elucidated. Diabetes causes neurodegeneration by inducing changes in vascular function and structure, glucose metabolism, and insulin signaling, as well as by modifying β-amyloid (Aβ)/tau metabolisms. In turn, AD influences systemic glucose metabolism by inducing behavioral changes, memory disturbances, hypothalamic dysfunction, frailty and possibly plasma/peripheral Aβ level changes...
May 24, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28549949/recent-advancements-in-liposomes-targeting-strategies-to-cross-blood-brain-barrier-bbb-for-the-treatment-of-alzheimer-s-disease
#4
REVIEW
Mukta Agrawal, Ajazuddin, Dulal K Tripathi, Swarnlata Saraf, Shailendra Saraf, Sophia G Antimisiaris, Spyridon Mourtas, Margareta Hammarlund-Udenaes, Amit Alexander
In this modern era, with the help of various advanced technologies, medical science has overcome most of the health-related issues successfully. Though, some diseases still remain unresolved due to various physiological barriers. One such condition is Alzheimer; a neurodegenerative disorder characterized by progressive memory impairment, behavioral abnormalities, mood swing and disturbed routine activities of the person suffering from. It is well known to all that the brain is entirely covered by a protective layer commonly known as blood brain barrier (BBB) which is responsible to maintain the homeostasis of brain by restricting the entry of toxic substances, drug molecules, various proteins and peptides, small hydrophilic molecules, large lipophilic substances and so many other peripheral components to protect the brain from any harmful stimuli...
May 24, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28530341/-measuring-the-effect-of-multi-sensory-stimulation-in-the-snoezelen-room-on-sleep-quality-of-alzheimer-patients-using-actigraph
#5
Doron Todder, Meital Levartovsky, Tzvi Dwolatzky
BACKGROUND: The most common cause of dementia is Alzheimer's disease. The major manifestation of the disease is the cognitive impairment which appears at the onset of the disease. In addition to the cognitive impairment there are behavioral dysfunctions such as apathy, anxiety, depression and sleep disturbances. The treatment for the manifestations of Alzheimer is currently pharmacological and behavioral. One of the newest behavioral treatments for Alzheimer is the multi-sensory treatment using the Snoezelen room...
December 2016: Harefuah
https://www.readbyqxmd.com/read/28522792/transgenic-autoinhibition-of-p21-activated-kinase-exacerbates-synaptic-impairments-and-fronto-dependent-behavioral-deficits-in-an-animal-model-of-alzheimer-s-disease
#6
Cyril Bories, Dany Arsenault, Myriam Lemire, Cyntia Tremblay, Yves De Koninck, Frédéric Calon
Defects in p21-activated kinase (PAK) lead to dendritic spine abnormalities and are sufficient to cause cognition impairment. The decrease in PAK in the brain of Alzheimer's disease (AD) patients is suspected to underlie synaptic and dendritic disturbances associated with its clinical expression, particularly with symptoms related to frontal cortex dysfunction. To investigate the role of PAK combined with Aβ and tau pathologies (3xTg-AD mice) in the frontal cortex, we generated a transgenic model of AD with a deficit in PAK activity (3xTg-AD-dnPAK mice)...
May 16, 2017: Aging
https://www.readbyqxmd.com/read/28458182/the-attribution-of-animacy-and-agency-in-frontotemporal-dementia-versus-alzheimer-s-disease
#7
Sylvia S Fong, Pongsatorn Paholpak, Madelaine Daianu, Mariel B Deutsch, Brandalyn C Riedel, Andrew R Carr, Elvira E Jimenez, Michelle M Mather, Paul M Thompson, Mario F Mendez
Impaired attribution of animacy (state of living or being sentient) and of agency (capability of intrinsically-driven action) may underlie social behavior disturbances in behavioral variant frontotemporal dementia (bvFTD). We presented the Heider and Simmel film of moving geometric shapes to 11 bvFTD patients, 11 Alzheimer's disease (AD) patients, and 12 healthy controls (HCs) and rated their recorded verbal responses for animacy attribution and agency attribution. All participants had skin conductance (SC) continuously recorded while viewing the film, and all dementia participants underwent magnetic resonance imaging (MRI) for regions of interest...
April 8, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28446209/antipsychotic-prescribing-for-alzheimer-s-disease-and-related-disorders-in-specialized-settings-from-2010-to-2014-in-france-a-repeated-cross-sectional-study
#8
Karim Tifratene, Valeria Manera, Roxane Fabre, Auriane Gros, Susanne Thummler, Christian Pradier, Philippe Robert, Renaud David
BACKGROUND: Safety warnings from health authorities are currently intended to limit the use of antipsychotics (APs) in dementia-related conditions to treat neuropsychiatric symptoms, such as disturbing and/or delusional behaviors. The aim of this study is to investigate prevalence, correlates and trends of AP prescribing among people with dementia between 2010 and 2014 in the French population. METHODS: AP prescribing and associated factors among individuals with AD, mixed dementia and vascular dementia in the French National Alzheimer Database between 2010 and 2014 were analyzed using multivariate generalized estimating equations models (n = 199,549)...
April 26, 2017: Alzheimer's Research & Therapy
https://www.readbyqxmd.com/read/28304289/episodic-memory-dysfunction-in%C3%A2-behavioral-variant-frontotemporal-dementia-a-clinical-and-fdg-pet-study
#9
Marta Fernández-Matarrubia, Jordi A Matías-Guiu, María Nieves Cabrera-Martín, Teresa Moreno-Ramos, María Valles-Salgado, José Luis Carreras, Jorge Matías-Guiu
BACKGROUND: Episodic memory disturbance is still considered as an exclusion criterion for behavioral variant frontotemporal dementia (bvFTD), but growing evidence suggests that memory can be impaired. OBJECTIVE: Our main purposes were to assess episodic memory in a group of bvFTD patients comparatively with Alzheimer's disease (AD) patients, and analyze the relationship between episodic memory and brain metabolism measured using positron emission tomography imaging with 18F-fluorodeoxyglucose (FDG-PET)...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28269783/modulating-the-balance-of-synaptic-and-extrasynaptic-nmda-receptors-shows-positive-effects-against-amyloid-%C3%AE-induced-neurotoxicity
#10
Yan Huang, Wei Shen, Jie Su, Bin Cheng, Dong Li, Gang Liu, Wen-Xia Zhou, Yong-Xiang Zhang
Alzheimer's disease (AD) patients suffer a disturbance in the balance between synaptic (GluN2A, mediating the protective pathway) and extrasynaptic NMDA receptors (NMDARs) (GluN2B, mediating the excitotoxic pathway), and, therefore, restoring the balance of GluN2A and GluN2B should be beneficial for AD. In this study, the GluN2B-selective antagonist, ifenprodil, and the non-selective NMDAR agonist, NMDA, had little effect on amyloid-β (Aβ)-induced long-term potentiation deficits. Enhancing the activity of GluN2A had a protective effect against Aβ, and specific activation of GluN2A and inhibition of GluN2B showed a better protective effect...
March 2, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28265571/validation-of-the-italian-version-of-the-caregiver-abuse-screen-among-family-caregivers-of-older-people-with-alzheimer-s-disease
#11
RANDOMIZED CONTROLLED TRIAL
Maria Gabriella Melchiorre, Mirko Di Rosa, Francesco Barbabella, Norma Barbini, Fabrizia Lattanzio, Carlos Chiatti
Introduction. Elder abuse is often a hidden phenomenon and, in many cases, screening practices are difficult to implement among older people with dementia. The Caregiver Abuse Screen (CASE) is a useful tool which is administered to family caregivers for detecting their potential abusive behavior. Objectives. To validate the Italian version of the CASE tool in the context of family caregiving of older people with Alzheimer's disease (AD) and to identify risk factors for elder abuse in Italy. Methods. The CASE test was administered to 438 caregivers, recruited in the Up-Tech study...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28245482/neuropsychiatric-symptoms-in-alzheimer-disease-vascular-dementia-and-mixed-dementia
#12
Cassandra J Anor, Sean O'Connor, Amardeep Saund, David F Tang-Wai, Ron Keren, Maria Carmela Tartaglia
BACKGROUND/AIMS: Neuropsychiatric symptoms (NPS) are common in Alzheimer disease (AD) and vascular dementia (VaD), and are distressful to patients and caregivers. NPS are likely related to the underlying pathology. Previous studies suggest that frontal lobe lesions and vascular changes such as white matter hyperintensities (WMH) have a significant association with specific NPS. The current study aimed to compare NPS in patients with AD, VaD, and mixed AD/VaD, and to evaluate the differences in the prevalence of NPS in relation to frontal WMH volume...
March 1, 2017: Neuro-degenerative Diseases
https://www.readbyqxmd.com/read/28188358/protective-effect-of-valproic-acid-in-streptozotocin-induced-sporadic-alzheimer-s-disease-mouse-model-possible-involvement-of-the-cholinergic-system
#13
Mirna Ezzat Sorial, Nesrine Salah El Dine El Sayed
Sporadic Alzheimer's disease (SAD) is a slowly progressive neurological disorder that is the most common form of dementia. Cholinergic system dysfunction and amyloid beta formation are the two main underlying pathological mechanisms for the disease development. In recent studies, insulin receptor desensitization and disturbances in the downstream effects of insulin receptor signaling were observed in the brains of Alzheimer's patients. Currently, intracereberoventricular (ICV) injection of streptozotocin (STZ) is found to induce behavioral, neurochemical, and structural alterations in animals resembling those found in SAD patients...
February 10, 2017: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/28124634/buspirone-for-the-treatment-of-dementia-with-behavioral-disturbance
#14
Maria R Santa Cruz, Priscilla C Hidalgo, Meredith S Lee, Cornelius W Thomas, Suzanne Holroyd
Behavioral disturbances are common but serious symptoms in patients with dementia. Currently, there are no FDA approved drugs for this purpose. There have been case reports and small case series of the use of buspirone. In this retrospective study, we review 179 patients prescribed buspirone for treatment of behavioral disturbance in dementia to better characterize the efficacy and potential side effects. All patients prescribed buspirone for behavioral disturbance due to dementia from a geropsychiatric outreach program were reviewed...
January 26, 2017: International Psychogeriatrics
https://www.readbyqxmd.com/read/28035933/frontal-lobe-function-correlates-with%C3%A2-one-year-incidence-of-urinary-incontinence-in-elderly-with-alzheimer-disease
#15
Taiki Sugimoto, Masaki Yoshida, Rei Ono, Shunsuke Murata, Naoki Saji, Shumpei Niida, Kenji Toba, Takashi Sakurai
BACKGROUND: Urinary incontinence (UI) is frequently observed in patients with Alzheimer's disease (AD). Although previous works highlight the association between frontal lobe-related function and UI, causal relationship is unclear. OBJECTS: To clarify the longitudinal association between frontal lobe function and the incidence of UI at 1 year in patients with AD. METHODS: The subjects were 215 continent AD patients who attended the Memory Clinic of the National Center for Geriatrics and Gerontology of Japan during the period from March 2011 to December 2014...
December 30, 2016: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28035924/the-effect-of-the-association-between-donepezil-and-choline-alphoscerate-on-behavioral-disturbances-in-alzheimer-s-disease-interim-results-of-the-ascomalva-trial
#16
Anna Carotenuto, Raffaele Rea, Enea Traini, Angiola Maria Fasanaro, Giovanna Ricci, Valentino Manzo, Francesco Amenta
BACKGROUND: Behavioral and psychological symptoms of dementia (BPSD) are a group of psychological reactions, psychiatric symptoms, and behaviors commonly found in Alzheimer's disease (AD). Four clusters of BPSD have been described: mood disorders (depression, anxiety, and apathy), psychotic symptoms (delusions and hallucinations), aberrant motor behaviors (pacing, wandering, and other purposeless behaviors), and inappropriate behaviors (agitation, disinhibition, and euphoria). Most of them are attributed to acetylcholine deficiency...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28017681/exposure-to-short-photoperiod-regime-reduces-ventral-subicular-lesion-induced-anxiety-like-behavior-in-wistar-rats
#17
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...
March 1, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28012089/orexin-and-alzheimer-s-disease
#18
Claudio Liguori
Alzheimer's disease (AD) is the most frequent age-related dementia. It prevalently causes cognitive decline, although it is frequently associated with secondary behavioral disturbances. AD neurodegeneration characteristically produces a remarkable destruction of the sleep-wake cycle, with diurnal napping, nighttime arousals, sleep fragmentation, and REM sleep impairment. It was recently hypothesized that the orexinergic system was involved in AD pathology. Accordingly, recent papers showed the association between orexinergic neurotransmission dysfunction, sleep impairment, and cognitive decline in AD...
December 24, 2016: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/27988490/hydrogen-sulfide-ameliorates-homocysteine-induced-cognitive-dysfunction-by-inhibition-of-reactive-aldehydes-involving-upregulation-of-aldh2
#19
Min Li, Ping Zhang, Hai-Jun Wei, Man-Hong Li, Wei Zou, Xiang Li, Hong-Feng Gu, Xiao-Qing Tang
BACKGROUND: Homocysteine, a risk factor for Alzheimer's disease, induces cognitive dysfunction. Reactive aldehydes play an important role in cognitive dysfunction. Aldehyde-dehydrogenase 2 detoxifies reactive aldehydes. Hydrogen sulfide, a novel neuromodulator, has neuroprotective effects and regulates learning and memory. Our previous work confirmed that the disturbance of hydrogen sulfide synthesis is invovled in homocysteine-induced defects in learning and memory. Therefore, the present work was to explore whether hydrogen sulfide ameliorates homocysteine-generated cognitive dysfunction and to investigate whether its underlying mechanism is related to attenuating accumulation of reactive aldehydes by upregulation of aldehyde-dehydrogenase 2...
December 19, 2016: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27940352/gray-matter-network-differences-between-behavioral-variant-frontotemporal-dementia-and-alzheimer-s-disease
#20
E G B Vijverberg, B M Tijms, J Dopp, Y J Hong, C E Teunissen, F Barkhof, P Scheltens, Y A L Pijnenburg
We set out to study whether single-subject gray matter (GM) networks show disturbances that are specific for Alzheimer's disease (AD; n = 90) or behavioral variant frontotemporal dementia (bvFTD; n = 59), and whether such disturbances would be related to cognitive deficits measured with mini-mental state examination and a neuropsychological battery, using subjective cognitive decline subjects as reference. AD and bvFTD patients had a lower degree, connectivity density, clustering, path length, betweenness centrality, and small world values compared with subjective cognitive decline...
February 2017: Neurobiology of Aging
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