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https://www.readbyqxmd.com/read/28738363/mild-cognitive-impairment-and-driving-cessation-a-3-year-longitudinal-study
#1
Michael H Connors, David Ames, Michael Woodward, Henry Brodaty
BACKGROUND/AIMS: Driving cessation is associated with significant morbidity in older people. People with mild cognitive impairment (MCI) may be at particular risk of this. Very little research has examined driving in this population. Given this, we sought to identify predictors of driving cessation in people with MCI. METHODS: One hundred and eighty-five people with MCI were recruited from 9 memory clinics around Australia. People with MCI and their carers reported their driving status and completed measures of cognition, function, neuropsychiatric symptoms, and medication use at regular intervals over a 3-year period...
July 22, 2017: Dementia and Geriatric Cognitive Disorders
https://www.readbyqxmd.com/read/28738353/inflammation-effects-on-glutamate-as-a-pathway-to-neuroprogression-in-mood-disorders
#2
Ebrahim Haroon, Andrew H Miller
Neuroprogression is a term used to describe worsening psychopathology, poor treatment response, and declining cognitive and functional outcomes among patients with chronic mental disorders. Chronic inflammatory activation and glutamate-mediated excitotoxicity are two key etiological factors implicated in the development of neuroprogression. In this chapter, we hypothesize that the association between chronic inflammatory activation, neuroprogression, and glutamate dysregulation might be mediated by glial dysfunction...
July 24, 2017: Modern Trends in Pharmacopsychiatry
https://www.readbyqxmd.com/read/28738140/high-prevalence-of-subclinical-cerebral-infarction-in-patients-with-heart-failure-with-preserved-ejection-fraction
#3
Rebecca J Cogswell, Faye L Norby, Rebecca F Gottesman, Lin Y Chen, Scott Solomon, Amil Shah, Alvaro Alonso
AIMS: Undetected atrial fibrillation (AF) may be common in the heart failure with preserved ejection fraction (HFpEF) population, and failure to detect this may lead to the missing of opportunities to prevent associated subclinical cerebral infarctions (SCIs) and cognitive decline. METHODS AND RESULTS: We studied 1527 participants in the Atherosclerosis Risk in Communities (ARIC) Study, who underwent echocardiography, brain magnetic resonance imaging (MRI) and detailed cognitive assessment during 2011-13...
July 24, 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/28737723/role-of-g-protein-coupled-receptors-in-the-regulation-of-structural-plasticity-and-cognitive-function
#4
REVIEW
Crystal C Y Leung, Yung H Wong
Cognition and other higher brain functions are known to be intricately associated with the capacity of neural circuits to undergo structural reorganization. Structural remodelling of neural circuits, or structural plasticity, in the hippocampus plays a major role in learning and memory. Dynamic modifications of neuronal connectivity in the form of dendritic spine morphology alteration, as well as synapse formation and elimination, often result in the strengthening or weakening of specific neural circuits that determine synaptic plasticity...
July 24, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28737237/subcortical-shape-analysis-of-progressive-mild-cognitive-impairment-in-parkinson-s-disease
#5
Su Jin Chung, Jeong-Hyeon Shin, Kyoo Ho Cho, Yoonju Lee, Young H Sohn, Joon-Kyung Seong, Phil Hyu Lee
BACKGROUND: Cortical neural correlates of ongoing cognitive decline in Parkinson's disease (PD) have been suggested; however, the role of subcortical structures in longitudinal change of cognitive dysfunction in PD has not been fully investigated. Here, we used automatic analysis to explore subcortical brain structures in patients with PD with mild cognitive impairment that converts into PD with dementia. METHODS: One hundred eighty-two patients with PD with mild cognitive impairment were classified as PD with mild cognitive impairment converters (n = 74) or nonconverters (n = 108), depending on whether they were subsequently diagnosed with dementia in PD...
July 24, 2017: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/28737118/subjective-cognitive-decline-is-longitudinally-associated-with-lower-health-related-quality-of-life
#6
Susanne Roehr, Tobias Luck, Alexander Pabst, Horst Bickel, Hans-Helmut König, Dagmar Lühmann, Angela Fuchs, Steffen Wolfsgruber, Birgitt Wiese, Siegfried Weyerer, Edelgard Mösch, Christian Brettschneider, Tina Mallon, Michael Pentzek, Michael Wagner, Silke Mamone, Jochen Werle, Martin Scherer, Wolfgang Maier, Frank Jessen, Steffi G Riedel-Heller
BACKGROUND: Subjective cognitive decline (SCD), the potentially earliest notable manifestation of preclinical Alzheimer's disease and other dementias, was consistently associated with lower quality of life in cross-sectional studies. The aim of this study was to investigate whether such an association persists longitudinally - particularly with health-related quality of life (HRQoL) in older individuals without cognitive impairment. METHODS: Data were derived from follow-up 2-6 of the prospective Germany Study on Ageing, Cognition and Dementia in Primary Care (AgeCoDe) covering a total six-year observation period...
July 24, 2017: International Psychogeriatrics
https://www.readbyqxmd.com/read/28736541/hallucinations-in-healthy-older-adults-an-overview-of-the-literature-and-perspectives-for-future-research
#7
REVIEW
Johanna C Badcock, Hedwige Dehon, Frank Larøi
KEY POINTS ➢ Studies suggest a substantial minority of healthy older adults have hallucinatory experiences, in line with existing evidence on hallucinations in other age groups, though it is still unclear if hallucination prevalence increases or declines with age in older cohorts.➢ Stigma attached to both hallucinations and ageing leads to considerable under-reporting of these experiences in healthy older adults and may negatively bias how professionals, family members, and the public respond.➢ Why and when hallucinations in healthy older adults remit, persist, or progress to other clinical disorders remains poorly understood...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28736516/weaker-functional-connectivity-strength-in-patients-with-type-2-diabetes-mellitus
#8
Linlin Liu, Wanhu Li, Yang Zhang, Wen Qin, Shan Lu, Quan Zhang
Type 2 diabetes mellitus (T2DM) is related to cognitive impairments and increased risk for dementia. Neuroimaging studies have demonstrated T2DM-related brain structural and functional changes which are partly associated to the cognitive decline. However, few studies focused on the early neuroimaging findingsin T2DM patients. In this study, a data-driven whole-brain resting state functional connectivity strength (rsFCS) methodwas used to evaluate resting functional changes in 53 T2DM patients compared with 55 matched healthy controls (HCs), and to detect the associations between the rsFCSchanges and cognitive functions in T2DM patients...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28732760/rutin-alleviates-chronic-unpredictable-stress-induced-behavioral-alterations-and-hippocampal-damage-in-mice
#9
Arun Parashar, Vineet Mehta, Malairaman Udayabanu
Chronic stress results in neurological complications like depression, cognitive dysfunction, and anxiety disorders. In our previous study, we observed that Urtica dioica leaf extract attenuated chronic stress-induced complications. Further, we observed that Urtica dioica contained a great amount of the flavonoid rutin in it. Hence, we aimed to evaluate the effect of rutin on 21days chronic unpredictable stress (CUS) mouse model. CUS led to a decline in locomotion & muscle coordination abilities, cognitive deficits, anxiety, and depression...
July 18, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28732489/the-impact-of-retirement-on-age-related-cognitive-decline-a-systematic-review
#10
Annette Meng, Mette Andersen Nexø, Vilhelm Borg
BACKGROUND: Knowledge on factors affecting the rate of cognitive decline and how to maintain cognitive functioning in old age becomes increasingly relevant. The purpose of the current study was to systematically review the evidence for the impact of retirement on cognitive functioning and on age related cognitive decline. METHOD: We conducted a systematic literature review, following the principles of the PRISMA statement, of longitudinal studies on the association between retirement and cognition...
July 21, 2017: BMC Geriatrics
https://www.readbyqxmd.com/read/28734121/the-impact-of-chronic-psychiatric-disorders-on-cognitive-decline
#11
R Villeneuve, C Blanchard, L Rullier, N Raoux, V Bergua, J-F Dartigues, K Pérès, H Amieva
OBJECTIVES: Based on seemingly contradictory results in the existing literature, the objective of our study was to investigate whether older individuals suffering from chronic psychiatric disorders show a more rapid decline in cognitive performances than their non-psychiatric counterparts, or if the pattern of decline through older age is similar in both groups. METHOD: A total of 820 older adults were selected from the Ageing Multidisciplinary Investigation (AMI) cohort study, which studies health-related issues of people over 65 years old living in rural areas...
July 22, 2017: Acta Psychiatrica Scandinavica
https://www.readbyqxmd.com/read/28734053/hearing-impairment-and-incident-dementia-findings-from-the-english-longitudinal-study-of-ageing
#12
Hilary R Davies, Dorina Cadar, Annie Herbert, Martin Orrell, Andrew Steptoe
OBJECTIVES: To determine whether hearing loss is associated with incident physician-diagnosed dementia in a representative sample. DESIGN: Retrospective cohort study. SETTING: English Longitudinal Study of Ageing. PARTICIPANTS: Adults aged 50 and older. MEASUREMENTS: Cross-sectional associations between self-reported (n = 7,865) and objective hearing measures (n = 6,902) and dementia were examined using multinomial-logistic regression...
July 22, 2017: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/28733960/a-review-of-fluid-biomarkers-for-alzheimer-s-disease-moving-from-csf-to-blood
#13
REVIEW
Kaj Blennow
A set of core cerebrospinal fluid (CSF) biomarkers for Alzheimer's disease (AD) includes total tau (T-tau), phosphorylated tau (P-tau) and β-amyloid 42 (Aβ42). These biomarkers reflect some of the key aspects of AD pathophysiology, including neuronal degeneration, tau phosphorylation with tangle formation, and Aβ aggregation with deposition of the peptide into plaques. The core AD CSF biomarkers have been validated clinically in numerous studies, and found to have a very high diagnostic performance to identify AD, both in the dementia and in the mild cognitive impairment stages of the disease...
July 2017: Neurology and Therapy
https://www.readbyqxmd.com/read/28733897/alleviation-of-neuropathology-by-inhibition-of-monoacylglycerol-lipase-in-app-transgenic-mice-lacking-cb2-receptors
#14
Jian Zhang, Chu Chen
Inhibition of monoacylglycerol lipase (MAGL), the primary enzyme that hydrolyzes the endocannabinoid 2-arachidonoylglycerol (2-AG) in the brain, produces profound anti-inflammatory and neuroprotective effects and improves synaptic and cognitive functions in animal models of Alzheimer's disease (AD). However, the molecular mechanisms underlying the beneficial effects produced by inhibition of 2-AG metabolism are still not clear. The cannabinoid receptor type 2 (CB2R) has been thought to be a therapeutic target for AD...
July 21, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28733627/decreasing-prevalence-of-dementia-in-85-year-olds-examined-22-years-apart-the-influence-of-education-and-stroke
#15
Ingmar Skoog, Anne Börjesson-Hanson, Silke Kern, Lena Johansson, Hanna Falk, Robert Sigström, Svante Östling
Individuals aged 80 years and older constitute the fastest growing segment of the population worldwide, leading to an expected increase in dementia cases. Education level and treatment of vascular risk factors has increased during the last decades. We examined whether this has influenced the prevalence of dementia according to DSM-III-R using population-based samples of 85-year-olds (N = 1065) examined with identical methods 1986-87 and 2008-10. The prevalence of dementia was 29.8% in 1986-87 and 21.7% in 2008-10 (OR 0...
July 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28733268/carriers-of-an-apolipoprotein-e-epsilon-4-allele-are-more-vulnerable-to-a-dietary-deficiency-in-omega-3-fatty-acids-and-cognitive-decline
#16
REVIEW
Tanya Gwendolyn Nock, Raphaël Chouinard-Watkins, Mélanie Plourde
Carriers of an epsilon 4 allele (E4) of apolipoprotein E (APOE) develop Alzheimer's disease (AD) earlier than carriers of other APOE alleles. The metabolism of plasma docosahexaenoic acid (DHA, 22:6n-3), an omega-3 fatty acid (n-3 FA), taken up by the brain and concentrated in neurons, is disrupted in E4 carriers, resulting in lower levels of brain DHA. Behavioural and cognitive impairments have been observed in animals with lower brain DHA levels, with emphasis on loss of spatial memory and increased anxiety...
July 18, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28732249/evaluating-alzheimer-s-disease-biomarkers-as-mediators-of-age-related-cognitive-decline
#17
Timothy J Hohman, Doug Tommet, Shawn Marks, Joey Contreras, Rich Jones, Dan Mungas
Age-related changes in cognition are partially mediated by the presence of neuropathology and neurodegeneration. This manuscript evaluates the degree to which biomarkers of Alzheimer's disease, (AD) neuropathology and longitudinal changes in brain structure, account for age-related differences in cognition. Data from the AD Neuroimaging Initiative (n = 1012) were analyzed, including individuals with normal cognition and mild cognitive impairment. Parallel process mixed effects regression models characterized longitudinal trajectories of cognitive variables and time-varying changes in brain volumes...
July 4, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28731452/temporal-order-of-alzheimer-s-disease-related-cognitive-marker-changes-in-blsa-and-wrap-longitudinal-studies
#18
Murat Bilgel, Rebecca L Koscik, Yang An, Jerry L Prince, Susan M Resnick, Sterling C Johnson, Bruno M Jedynak
Investigation of the temporal trajectories of currently used neuropsychological tests is critical to identifying earliest changing measures on the path to dementia due to Alzheimer's disease (AD). We used the Progression Score (PS) method to characterize the temporal trajectories of measures of verbal memory, executive function, attention, processing speed, language, and mental status using data spanning normal cognition, mild cognitive impairment, and AD from 1,661 participants with a total of 7,839 visits (age at last visit 77...
July 18, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28731451/novel-blood-based-biomarkers-of-cognition-stress-and-physical-or-cognitive-training-in-older-adults-at-risk-of-dementia-preliminary-evidence-for-a-role-of-bdnf-irisin-and-the-kynurenine-pathway
#19
Olivia C Küster, Daria Laptinskaya, Patrick Fissler, Cathrin Schnack, Martina Zügel, Verena Nold, Franka Thurm, Sina Pleiner, Alexander Karabatsiakis, Björn von Einem, Patrick Weydt, Andre Liesener, Andreas Borta, Alexander Woll, Bastian Hengerer, Iris-Tatjana Kolassa, Christine A F von Arnim
 Psychosocial stress and physical, cognitive, and social activity predict the risk of cognitive decline and dementia. The aim of this study was to elucidate brain-derived neurotrophic factor (BDNF), irisin, and the kynurenine pathway (KP) as potential underlying biological correlates. We evaluated associations of irisin and the KP with BDNF in serum and with cognition, stress, and activities. Furthermore, changes in serum concentrations of BDNF, irisin, and KP metabolites were investigated after physical or cognitive training...
July 18, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28731439/antihypertensive-treatment-is-associated-with-mri-derived-markers-of-neurodegeneration-and-impaired-cognition-a-propensity-weighted-cohort-study
#20
Jodi D Edwards, Joel Ramirez, Brandy L Callahan, Sheldon W Tobe, Paul Oh, Courtney Berezuk, Krista Lanctôt, Walter Swardfager, Sean Nestor, Alexander Kiss, Stephen Strother, Sandra E Black
BACKGROUND: Hypertension is an important risk factor for Alzheimer's disease (AD) and cerebral small vessel disease. Angiotensin converting enzyme inhibitors (ACEIs) and angiotensin receptor blockers (ARBs) are common anti-hypertensive treatments, but have differential effects on cortical amyloid. OBJECTIVE: The objective of this study was to evaluate associations between anti-hypertensive treatment, brain volume, and cognition, using a propensity-weighted analysis to account for confounding by indication...
July 17, 2017: Journal of Alzheimer's Disease: JAD
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