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https://www.readbyqxmd.com/read/29775413/human-cerebral-collateral-arteriole-function-in-normal-cognition-mild-cognitive-impairment-and-dementia-subjects
#1
Raymond Q Migrino, Seth Truran, Nina Karamanova, Geidy Serrano, Calvin Madrigal, Hannah A Davies, Jillian Madine, Peter Reaven, Thomas G Beach
Clinical and preclinical studies suggest a link between cardiovascular disease and dementia disorders but the role of collateral brain circulation in cognitive dysfunction remains unknown. We aim to test the hypothesis that leptomeningeal arteriole (LMA) function and response to metabolic stressors differ among dementia, mild cognitive impairment (MCI) and normal cognition (CN) subjects. Following rapid autopsy, LMA were isolated from CN (N=10), MCI (N=12) or dementia subjects (N=42, Alzheimer's disease [AD], vascular dementia [VaD], or Other Dementia) and endothelial and smooth muscle-dependent function were measured at baseline and following exposure to β-amyloid (Aβ42 2 μM), palmitic acid (PA 150 μM) or medin (5μM) and compared...
May 18, 2018: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29775139/burden-and-strain-among-familial-caregivers-of-patients-with-dementia-in-china
#2
Min Zhang, Yu-Ping Chang, Yu Jin Liu, Ling Gao, Davina Porock
BACKGROUND: Alzheimer's disease is one of a variety of progressive and ultimately fatal neurodegenerative diseases that are characterized by a number of nervous and mental symptoms and behavior disorders. These problems are likely to cause burden and strain on caregivers. In this study, we demonstrated the level and relationship of burden and strain among caregivers of dementia patients in China. METHODS: A total of 212 caregivers of family members with dementia responded to the survey...
May 2018: Issues in Mental Health Nursing
https://www.readbyqxmd.com/read/29772021/analysis-of-risk-factors-for-mild-cognitive-impairment-based-on-word-list-memory-test-results-and-questionnaire-responses-in-healthy-japanese-individuals-registered-in-an-online-database
#3
Masayo Ogawa, Daichi Sone, Kazushi Maruo, Hiroyuki Shimada, Keisuke Suzuki, Hiroshi Watanabe, Hiroshi Matsuda, Hidehiro Mizusawa
Although the development of effective therapeutic drugs and radical treatment options for dementia and Alzheimer's disease (AD) remains urgent, progress in recent clinical trials of AD drugs has been less than adequate. In order to advance the progress of clinical trials, it is necessary to establish more efficient methods of recruitment. In Japan, there are registration systems stratified by mild cognitive impairment and preclinical and clinical stages of early and advanced stage dementia, but there is no registration system for healthy individuals yet...
2018: PloS One
https://www.readbyqxmd.com/read/29770778/apolipoprotein-e-in-diet-induced-obesity-a-paradigm-shift-from-conventional-perception
#4
Kyriakos E Kypreos, Eleni A Karavia, Caterina Constantinou, Aikaterini Hatziri, Christina Kalogeropoulou, Eva Xepapadaki, Evangelia Zvintzou
Apolipoprotein E (APOE) is a major protein component of peripheral and brain lipoprotein transport systems. APOE in peripheral circulation does not cross blood brain barrier or blood cerebrospinal fluid barrier. As a result, peripheral APOE expression does not affect brain APOE levels and vice versa. Numerous epidemiological studies suggest a key role of peripherally expressed APOE in the development and progression of coronary heart disease while brain APOE has been associated with dementia and Alzheimer's disease...
November 1, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/29770579/cholinesterase-targeting-by-polyphenols-a-therapeutic-approach-for-the-treatment-of-alzheimer-s-disease
#5
REVIEW
Nasimudeen R Jabir, Fayaz Rahman Khan, Shams Tabrez
Alzheimer's disease (AD) is a progressive irreversible neurodegenerative disorder characterized by excessive deposition of β-amyloid (Aβ) oligomers, and neurofibrillary tangles (NFTs), comprising of hyperphosphorylated tau proteins. The cholinergic system has been suggested as the earliest and most affected molecular mechanism that describes AD pathophysiology. Moreover, cholinesterase inhibitors (ChEIs) are the potential class of drugs that can amplify cholinergic activity to improve cognition and global performance and reduce psychiatric and behavioral disturbances...
May 16, 2018: CNS Neuroscience & Therapeutics
https://www.readbyqxmd.com/read/29769839/a-novel-association-of-polymorphism-in-the-itga4-gene-encoding-the-vla-4-%C3%AE-4-subunit-with-increased-risk-of-alzheimer-s-disease
#6
Vladimira Durmanova, Zuzana Parnicka, Juraj Javor, Gabriel Minarik, Lubomir Vrazda, Barbora Vaseckova, Karin Gmitterova, Maria Kralova, Jan Pecenak, Peter Filipcik, Ivana Shawkatova
Alzheimer's disease (AD) is the most prevalent cause of dementia in elderly people worldwide. Many studies support the hypothesis that the inflammation of the CNS contributes to the neurodegeneration and disease progression. The integrin molecule α 4 β 1, also known as very late antigen 4 (VLA-4), belongs to adhesion molecules that activate the inflammatory process through the migration of immune cells into the CNS. Therefore, the objective of our study was to analyze the association between two polymorphisms located in the ITGA4 gene encoding the α 4 subunit of VLA-4 and the risk of AD...
2018: Mediators of Inflammation
https://www.readbyqxmd.com/read/29769247/dementia-and-physical-activity-dapa-trial-of-moderate-to-high-intensity-exercise-training-for-people-with-dementia-randomised-controlled-trial
#7
Sarah E Lamb, Bart Sheehan, Nicky Atherton, Vivien Nichols, Helen Collins, Dipesh Mistry, Sukhdeep Dosanjh, Anne Marie Slowther, Iftekhar Khan, Stavros Petrou, Ranjit Lall
OBJECTIVE: To estimate the effect of a moderate to high intensity aerobic and strength exercise training programme on cognitive impairment and other outcomes in people with mild to moderate dementia. DESIGN: Multicentre, pragmatic, investigator masked, randomised controlled trial. SETTING: National Health Service primary care, community and memory services, dementia research registers, and voluntary sector providers in 15 English regions. PARTICIPANTS: 494 people with dementia: 329 were assigned to an aerobic and strength exercise programme and 165 were assigned to usual care...
May 16, 2018: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/29768974/brain-phospholipid-precursors-administered-post-injury-reduce-tissue-damage-and-improve-neurological-outcome-in-experimental-traumatic-brain-injury
#8
Orli Thau-Zuchman, Rita Noutel Gomes, Simon Christopher Dyall, Meirion Davis, John V Priestley, Martine Groenendijk, Martijn DE Wilde, Jordi Lopez-Tremoleda, Adina T Michael-Titus
Traumatic brain injury (TBI) leads to cellular loss, destabilisation of membranes, disruption of synapses and altered brain connectivity, and increased risk of neurodegenerative disease. A significant and long-lasting decrease in phospholipids (PL), essential membrane constituents, has recently been reported in plasma and brain tissue, in human and experimental TBI. We hypothesised that supporting PL synthesis post-injury could improve outcome after TBI. We tested this hypothesis using a multi-nutrient combination designed to support the biosynthesis of phospholipids and available for clinical use...
May 17, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29768278/lower-plasma-klotho-concentrations-are-associated-with-vascular-dementia-but-not-late-onset-alzheimer-s-disease
#9
Gloria Brombo, Francesco Bonetti, Beatrice Ortolani, Mario Luca Morieri, Cristina Bosi, Angelina Passaro, Giovanni B Vigna, Caterina Borgna, Maria Vittoria Arcidicono, Veronica Tisato, Giovanni Zuliani
BACKGROUND: The protein Klotho is involved in biological processes related to longevity, cardiovascular health, and cognition. Serum Klotho levels have been associated with better cognition in animal models; moreover, lower Klotho concentrations in cerebrospinal fluid from subjects with late-onset Alzheimer's disease (LOAD) have been reported. OBJECTIVE: Our study aimed to examine the possible relationship between Klotho plasma concentrations and cognitive status in the elderly...
May 16, 2018: Gerontology
https://www.readbyqxmd.com/read/29767690/entorhinal-cortex-volume-is-associated-with-dual-task-gait-cost-among-older-adults-with-mci-results-from-the-gait-and-brain-study
#10
Ryota Sakurai, Robert Bartha, Manuel Montero-Odasso
Background: Low dual-task gait performance (the slowing of gait speed while performing a demanding cognitive task) is associated with low cognitive performance and an increased risk of progression to dementia in older adults with mild cognitive impairment. However, the reason for this remains unclear. This study aimed to examine the relationship between dual-task cost and regional brain volume, focusing on the hippocampus, parahippocampal gyrus, entorhinal cortex, and motor and lateral frontal cortices in older adults with mild cognitive impairment...
May 15, 2018: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/29764279/the-modified-telephone-administered-minnesota-cognitive-acuity-screen-for-mild-cognitive-impairment
#11
Sarah Pillemer, George D Papandonatos, Cara Crook, Brian R Ott, Geoffrey Tremont
OBJECTIVE: This study aimed to compare the sensitivity and specificity of a modified version of the Minnesota Cognitive Acuity Screen (MCAS-m), by adding learning and recognition memory components, to the original version MCAS to distinguish amnestic mild cognitive impairment (aMCI) from healthy controls (HCs). METHODS/DESIGN: A total of 30 individuals with aMCI and 30 HCs underwent neuropsychological testing, neurologic examination, laboratory, and brain imaging tests...
January 1, 2018: Journal of Geriatric Psychiatry and Neurology
https://www.readbyqxmd.com/read/29763806/a-review-on-flavonoid-based-scaffolds-as-multi-target-directed-ligands-mtdls-for-alzheimer-s-disease
#12
REVIEW
Leili Jalili-Baleh, Elaheh Babaei, Shahin Abdpour, Syed Nasir Abbas Bukhari, Alireza Foroumadi, Ali Ramazani, Mohammad Sharifzadeh, Mohammad Abdollahi, Mehdi Khoobi
Alzheimer's disease (AD), the most common form of dementia, is a multifactorial neurodegenerative disease. The target enzymes inhibition including cholinesterase, beta-secretase, monoamine oxidase and inhibition of amyloid-β aggregation as well as oxidative stress and metal chelation play an important role in the pathogenesis of AD. Chroman-4-one scaffold with benzo-γ-pyrone network is a privileged structure in organic synthesis and drug design. A large number of research has been carried out on modified naturally occurring chromanone scaffolds and/or synthesized new analogues, to obtain effective drugs for AD management...
May 7, 2018: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29761891/processed-electroencephalogram-and-evoked-potential-techniques-for-amelioration-of-postoperative-delirium-and-cognitive-dysfunction-following-non-cardiac-and-non-neurosurgical-procedures-in-adults
#13
REVIEW
Yodying Punjasawadwong, Waraporn Chau-In, Malinee Laopaiboon, Sirivimol Punjasawadwong, Pathomporn Pin-On
BACKGROUND: Postoperative delirium (POD) and postoperative cognitive dysfunction (POCD) may complicate a patient's postoperative recovery in several ways. Monitoring of processed electroencephalogram (EEG) or evoked potential (EP) indices may prevent or minimize POD and POCD, probably through optimization of anaesthetic doses. OBJECTIVES: To assess whether the use of processed EEG or auditory evoked potential (AEP) indices (bispectral index (BIS), narcotrend index, cerebral state index, state entropy and response entropy, patient state index, index of consciousness, A-line autoregressive index, and auditory evoked potentials (AEP index)) as guides to anaesthetic delivery can reduce the risk of POD and POCD in non-cardiac surgical or non-neurosurgical adult patients undergoing general anaesthesia compared with standard practice where only clinical signs are used...
May 15, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29761569/cognitive-and-functional-progression-in-alzheimer-disease-a-prediction-model-of-latent-classes
#14
Miriam L Haaksma, Amaia Calderón-Larrañaga, Marcel G M Olde Rikkert, René J F Melis, Jeannie-Marie S Leoutsakos
OBJECTIVE: We sought to replicate a previously published prediction model for progression, developed in the Cache County Dementia Progression Study, using a clinical cohort from the National Alzheimer's Coordinating Center. METHODS: We included 1120 incident Alzheimer disease (AD) cases with at least one assessment after diagnosis, originating from 31 AD centres from the United States. Trajectories of the Mini-Mental State Examination (MMSE) and Clinical Dementia Rating sum of boxes (CDR-sb) were modelled jointly over time using parallel-process growth mixture models in order to identify latent classes of trajectories...
May 15, 2018: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/29761296/neuroimaging-in-lewy-body-dementia
#15
REVIEW
Tayyabah Yousaf, George Dervenoulas, Polytimi-Eleni Valkimadi, Marios Politis
Lewy body dementia (DLB) is a common form of cognitive impairment, accounting for 30% of dementia cases in ages over 65 years. Early diagnosis of DLB has been challenging; particularly in the context of differentiation with Parkinson's disease dementia and other forms of dementias, such as Alzheimer's disease and rapidly progressive dementias. Current practice involves the use of [123 I]FP-CIT-SPECT, [18 F]FDG PET and [123 I]MIBG molecular imaging to support diagnostic procedures. Structural imaging techniques have an essential role for excluding structural causes, which could lead to a DLB-like phenotype, as well as aiding differential diagnosis through illustrating disease-specific patterns of atrophy...
May 14, 2018: Journal of Neurology
https://www.readbyqxmd.com/read/29761124/progranulin-levels-in-blood-in-alzheimer-s-disease-and-mild-cognitive-impairment
#16
Yonatan A Cooper, Daniel Nachun, Deepika Dokuru, Zhongan Yang, Anna M Karydas, Ginette Serrero, Binbin Yue, Adam L Boxer, Bruce L Miller, Giovanni Coppola
Objective: Changes in progranulin ( GRN ) expression have been hypothesized to alter risk for Alzheimer's disease (AD). We investigated the relationship between GRN expression in peripheral blood and clinical diagnosis of AD and mild cognitive impairment (MCI). Methods: Peripheral blood progranulin gene expression was measured, using microarrays from Alzheimer's ( n = 186), MCI ( n = 118), and control ( n = 204) subjects from the University of California San Francisco Memory and Aging Center (UCSF-MAC) and two independent published series (AddNeuroMed and ADNI)...
May 2018: Annals of Clinical and Translational Neurology
https://www.readbyqxmd.com/read/29760644/an-algorithm-for-preclinical-diagnosis-of-alzheimer-s-disease
#17
REVIEW
Tapan K Khan
Almost all Alzheimer's disease (AD) therapeutic trials have failed in recent years. One of the main reasons for failure is due to designing the disease-modifying clinical trials at the advanced stage of the disease when irreversible brain damage has already occurred. Diagnosis of the preclinical stage of AD and therapeutic intervention at this phase, with a perfect target, are key points to slowing the progression of the disease. Various AD biomarkers hold enormous promise for identifying individuals with preclinical AD and predicting the development of AD dementia in the future, but no single AD biomarker has the capability to distinguish the AD preclinical stage...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29760643/combining-polygenic-hazard-score-with-volumetric-mri-and-cognitive-measures-improves-prediction-of-progression-from-mild-cognitive-impairment-to-alzheimer-s-disease
#18
Karolina Kauppi, Chun Chieh Fan, Linda K McEvoy, Dominic Holland, Chin Hong Tan, Chi-Hua Chen, Ole A Andreassen, Rahul S Desikan, Anders M Dale
Improved prediction of progression to Alzheimer's Disease (AD) among older individuals with mild cognitive impairment (MCI) is of high clinical and societal importance. We recently developed a polygenic hazard score (PHS) that predicted age of AD onset above and beyond APOE . Here, we used data from the Alzheimer's Disease Neuroimaging Initiative (ADNI) to further explore the potential clinical utility of PHS for predicting AD development in older adults with MCI. We examined the predictive value of PHS alone and in combination with baseline structural magnetic resonance imaging (MRI) data on performance on the Mini-Mental State Exam (MMSE)...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29760290/-senile-dementia-of-the-neurofibrillary-tangle-type-sd-nft
#19
Masahito Yamada
A subset of older individuals with dementia have neurofibrillary tangles (NFTs) in the medial temporal lobe and show absence of amyloid β-protein (Aβ) deposition in the brain. In 1996, the author's group reported senile dementia of the NFT type (SD-NFT) as a disease entity characterized by these pathological features as well as late-onset dementia in older subjects. In 2014, it was proposed that this pathological condition, irrespective of the presence of cognitive impairment, should be referred to as primary age-related tauopathy (PART)...
May 2018: Brain and Nerve, Shinkei Kenkyū No Shinpo
https://www.readbyqxmd.com/read/29760289/-neurocognitive-disorders-other-than-alzheimer-disease-vascular-dementia
#20
Mari Yoshida
Vascular dementia involves several mechanism of pathogenesis. Cerebral small vessel diseases play a central role in vascular dementia, including sporadic cerebral small vessel diseases, cerebral autosomal-dominant or autosomal recessive arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL or CARASIL), cerebral amyloid angiopathy, and amyloid β-related angiitis. Although these diseases have different pathomechanisms, chronic white matter hypoperfusion contributes to development of neuronal dysfunction as a common pathway in vascular dementia...
May 2018: Brain and Nerve, Shinkei Kenkyū No Shinpo
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