keyword
MENU ▼
Read by QxMD icon Read
search

Subjective memory impairment

keyword
https://www.readbyqxmd.com/read/28324703/arousal-amplifies-biased-competition-between-high-and-low-priority-memories-more-in-women-than-in-men-the-role-of-elevated-noradrenergic-activity
#1
David Clewett, Michiko Sakaki, Ringo Huang, Shawn E Nielsen, Mara Mather
Recent findings indicate that emotional arousal can enhance memory consolidation of goal-relevant stimuli while impairing it for irrelevant stimuli. According to one recent model, these goal-dependent memory tradeoffs are driven by arousal-induced release of norepinephrine (NE), which amplifies neural gain in target sensory and memory processing brain regions. Past work also shows that ovarian hormones modulate activity in the same regions thought to support NE's effects on memory, such as the amygdala, suggesting that men and women may be differentially susceptible to arousal's dual effects on episodic memory...
February 24, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28323826/apoe-related-risk-of-mild-cognitive-impairment-and-dementia-for-prevention-trials-an-analysis-of-four-cohorts
#2
Jing Qian, Frank J Wolters, Alexa Beiser, Mary Haan, M Arfan Ikram, Jason Karlawish, Jessica B Langbaum, John M Neuhaus, Eric M Reiman, J Scott Roberts, Sudha Seshadri, Pierre N Tariot, Beth McCarty Woods, Rebecca A Betensky, Deborah Blacker
BACKGROUND: With the onset of prevention trials for individuals at high risk for Alzheimer disease, there is increasing need for accurate risk prediction to inform study design and enrollment, but available risk estimates are limited. We developed risk estimates for the incidence of mild cognitive impairment (MCI) or dementia among cognitively unimpaired individuals by APOE-e4 dose for the genetic disclosure process of the Alzheimer's Prevention Initiative Generation Study, a prevention trial in cognitively unimpaired APOE-e4/e4 homozygote individuals...
March 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28318059/low-normal-csf-a%C3%AE-42-levels-predict-clinical-progression-in-non-demented-subjects
#3
Betty M Tijms, Daniela Bertens, Rosalinde E Slot, Alida A Gouw, Charlotte E Teunissen, Philip Scheltens, Wiesje M van der Flier, Pieter Jelle Visser
We studied whether continuous lower normal cerebrospinal fluid (CSF) amyloid β 1-42 (≥640 pg/ml) levels related with rate of clinical progression in a sample of 393 non-demented memory clinic patients. Lower normal levels were associated with faster clinical progression and this depended on baseline cognitive status (subjective cognitive decline: HR = 0.59, p <.05; mild cognitive impairment: HR=0.12, p <.001), indicating that normal CSF amyloid levels do not exclude incident Alzheimer's disease. These findings suggest that research on preclinical markers for Alzheimer's disease should take the continuum of CSF amyloid β 1-42 levels within the normal range into account...
March 20, 2017: Annals of Neurology
https://www.readbyqxmd.com/read/28316273/feasibility-and-acceptability-of-brief-cognitive-remediation-targeting-metacognition-in-acute-inpatients-with-psychosis-a-case-series
#4
Dimosthenis Tsapekos, Rumina Taylor, Matteo Cella
Cognitive remediation (CR) is an intensive intervention targeting cognitive impairment with the aim of improving functioning in people with psychotic disorders. Shorter forms of CR based on metacognition and targeting awareness of cognitive problems may be more appropriate for acute inpatient settings where time is limited. The objective of the study was to evaluate the feasibility and acceptability of a new brief course of CR targeting cognitive and metacognitive difficulties within an acute inpatient psychiatric setting...
March 20, 2017: Neuropsychological Rehabilitation
https://www.readbyqxmd.com/read/28315455/7-8-dihydroxyflavone-facilitates-the-action-exercise-to-restore-plasticity-and-functionality-implications-for-early-brain-trauma-recovery
#5
Gokul Krishna, Rahul Agrawal, Yumei Zhuang, Zhe Ying, Afshin Paydar, Neil G Harris, Luiz Fernando F Royes, Fernando Gomez-Pinilla
Metabolic dysfunction accompanying traumatic brain injury (TBI) severely impairs the ability of injured neurons to comply with functional demands. This limits the success of rehabilitative strategies by compromising brain plasticity and function, and highlights the need for early interventions to promote energy homeostasis. We sought to examine whether the TrkB agonist, 7,8-dihydroxyflavone (7,8-DHF) normalizes brain energy deficits and restablishes more normal patterns of functional connectivity, while enhancing the effects of exercise during post-TBI period...
March 14, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28302161/cognitive-profile-in-prodromal-dementia-with-lewy-bodies
#6
Jennifer Kemp, Nathalie Philippi, Clélie Phillipps, Catherine Demuynck, Timothée Albasser, Catherine Martin-Hunyadi, Catherine Schmidt-Mutter, Benjamin Cretin, Frédéric Blanc
BACKGROUND: Cortical and subcortical cognitive impairments have been found in dementia with Lewy bodies (DLB). Roughly, they comprise visuoconstructive and executive dysfunction, whereas memory would remain relatively spared. However, the cognitive profile of patients with prodromal DLB remains poorly illustrated to date. METHODS: We included 37 patients with prodromal DLB (age 67.2 ± 8.6 years, 18 men, Mini Mental State Examination [MMSE] score 27.4 ± 2) and 29 healthy control subjects (HCs; age 68...
March 16, 2017: Alzheimer's Research & Therapy
https://www.readbyqxmd.com/read/28302036/pharmacological-effects-of-turmeric-on-learning-memory-and-expression-of-muscarinic-receptor-genes-m1-m3-and-m5-in-stress-induced-mouse-model
#7
Aliya Khalid, Rabia Shakeel, Saira Justin, Ghazala Iqbal, Syed Adnan Ali Shah, Saadia Zahid, Touqeer Ahmed
Stress is involved in memory impairment by multiple mechanisms including activation of Hypothalamic-Pituitary Axis, which in turn activates release of corticosterone in blood. Cholinergic system blockade by muscarinic antagonist like scopolamine, also impairs memory. AIM: This study aimed to investigate the effect of turmeric (20mg/kg) on learning and memory and cholinergic system in a mouse model of stress along with cholinergic blockade. METHODS: Restrained stress was induced and cholinergic receptors were blocked using scopolamine in mice...
March 15, 2017: Current Drug Targets
https://www.readbyqxmd.com/read/28301977/cognitive-complaints-in-women-with-fibromyalgia-are-they-due-to-depression-or-to-objective-cognitive-dysfunction
#8
Olga Gelonch, Maite Garolera, Joan Valls, Lluís Rosselló, Josep Pifarré
INTRODUCTION: Cognitive complaints are common in fibromyalgia, but it is unclear whether they represent an objective cognitive dysfunction or whether they could be explained by depressive symptoms. Here, we aim to elucidate the frequency of subjective cognitive complaints in a sample of women with fibromyalgia, in addition to analyzing associations between these subjective complaints and objective measures linked to the attention and executive cognitive domains. Finally, we aim to investigate the ability of demographic, clinical, and psychological variables to explain the subjective complaints observed...
March 17, 2017: Journal of Clinical and Experimental Neuropsychology
https://www.readbyqxmd.com/read/28299642/cerebromicrovascular-dysfunction-predicts-cognitive-decline-and-gait-abnormalities-in-a-mouse-model-of-whole-brain-irradiation-induced-accelerated-brain-senescence
#9
Zoltan Ungvari, Stefano Tarantini, Peter Hertelendy, M Noa Valcarcel-Ares, Gabor A Fülöp, Sreemathi Logan, Tamas Kiss, Eszter Farkas, Anna Csiszar, Andriy Yabluchanskiy
Whole brain irradiation (WBI) is a mainstream therapy for patients with both identifiable brain metastases and prophylaxis for microscopic malignancies. However, it also promotes accelerated senescence in healthy tissues and leads to progressive cognitive dysfunction in up to 50% of tumor patients surviving long term after treatment, due to γ-irradiation-induced cerebromicrovascular injury. Moment-to-moment adjustment of cerebral blood flow (CBF) via neuronal activity-dependent cerebromicrovascular dilation (functional hyperemia) has a critical role in maintenance of healthy cognitive function...
February 2017: Geroscience
https://www.readbyqxmd.com/read/28291777/adolescent-but-not-adult-ethanol-binge-drinking-modulates-cocaine-withdrawal-symptoms-in-mice
#10
Juan Carlos Ledesma, Maria A Aguilar, Pablo Giménez-Gómez, José Miñarro, Marta Rodríguez-Arias
BACKGROUND: Ethanol (EtOH) binge drinking is an increasingly common behavior among teenagers that induces long-lasting neurobehavioral alterations in adulthood. An early history of EtOH abuse during adolescence is highly correlated with cocaine addiction in adulthood. Abstinence of cocaine abuse can cause psychiatric symptoms, such as anxiety, psychosis, depression, and cognitive impairments. This study assessed the consequences of adolescent exposure to EtOH on the behavioral alterations promoted by cocaine withdrawal in adulthood...
2017: PloS One
https://www.readbyqxmd.com/read/28290245/differentiated-effective-connectivity-patterns-of-the-executive-control-network-in-progressive-mci-a-potential-biomarker-for-predicting-ad
#11
Suping Cai, Yanlin Peng, Tao Chong, Yun Zhang, Karen M von Deneen, Liyu Huang, Aibl Research Group
Mild cognitive impairment (MCI) is often a transitional state between normal aging and Alzheimer's disease (AD). When observed longitudinally, some MCI patients convert to AD, while a considerable portion either remain MCI or revert to a normal functioning state. This divergence has provided some enlightenment on a potential biomarker be represented in the resting state brain activities of MCI patients with different post-hoc labels. Recent studies have shown impaired executive functions, other than typically explicated memory impairment with AD/MCI patients...
March 9, 2017: Current Alzheimer Research
https://www.readbyqxmd.com/read/28290073/prefrontal-dysconnectivity-links-to-working-memory-deficit-in-first-episode-schizophrenia
#12
Xiaojing Fang, Yulin Wang, Luqi Cheng, Yuanchao Zhang, Yuan Zhou, Shihao Wu, Huan Huang, Jilin Zou, Cheng Chen, Jun Chen, Huiling Wang, Tianzi Jiang
Working memory (WM) deficit is a core feature of schizophrenia and is characterized by abnormal functional integration in the prefrontal cortex, including the dorsolateral prefrontal cortex (dLPFC), dorsal anterior cingulate cortex (dACC), and ventrolateral prefrontal cortex (vLPFC). However, the specific mechanism by which the abnormal neuronal circuits that involve these brain regions contribute to this deficit is still unclear. Therefore, this study focused on these regions and sought to answer which abnormal causal relationships in these regions can be linked to impaired WM in schizophrenia...
March 13, 2017: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/28289829/subjective-memory-impairment-in-general-practice-short-overview-and-design-of-a%C3%A2-mixed-methods-study
#13
Michael Pentzek, Verena Leve, Verena Leucht
BACKGROUND: Public awareness for dementia is rising and patients with concerns about forgetfulness are not uncommon in general practice. For the general practitioner (GP) subjectively perceived memory impairment (SMI) also offers a chance to broach the issue of cognitive function with the patient. This may support GPs' patient-centered care in terms of a broader frailty concept. OBJECTIVE: What is SMI (definition, operationalization, prevalence and burden)? Which conceptions and approaches do GPs have regarding SMI? METHODS: Narrative overview of recent SMI criteria and results, selective utilization of results from a systematic literature search on GP dementia care, non-systematic search regarding SMI in general practice, deduction of a study design from the overview and development according to international standards...
March 13, 2017: Zeitschrift Für Gerontologie und Geriatrie
https://www.readbyqxmd.com/read/28289701/identifying-memory-impairment-and-early-dementia-in-primary-care
#14
Ellen Grober, Dorothy Wakefield, Amy R Ehrlich, Peter Mabie, Richard B Lipton
INTRODUCTION: This study examined the operating characteristics of two-stage case finding to identify memory impairment and very mild dementia. METHODS: Primary care patients underwent two-stage testing and a subsequent diagnostic assessment to assess outcomes. Patients who screen positive for subjective cognitive decline on the Informant Questionnaire on Cognitive Decline in the Elderly undergo memory testing with the Free and Cued Selective Reminding Test with Immediate Recall...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28289381/white-matter-damage-in-the-cholinergic-system-contributes-to-cognitive-impairment-in-subcortical-vascular-cognitive-impairment-no-dementia
#15
Qing Liu, Zude Zhu, Stefan J Teipel, Jianwei Yang, Yi Xing, Yi Tang, Jianping Jia
Cholinergic deficiency has been implicated in the pathogenesis of vascular cognitive impairment (VCI), but the extent of involvement and underlying mechanism remain unclear. In this study, targeting the early stage of VCI, we determined regional atrophy within the basal forebrain and deficiency in cholinergic pathways in 25 patients with vascular cognitive impairment no dementia (VCIND) compared to 24 healthy elderly subjects. By applying stereotaxic cytoarchitectonic maps of the nucleus basalis of Meynert (NbM), no significant atrophy was identified in VCIND...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28288856/environmental-enrichment-ameliorates-chronic-immobilisation-stress-induced-spatial-learning-deficits-and-restores-the-expression-of-bdnf-vegf-gfap-and-glucocorticoid-receptors
#16
B M Shilpa, V Bhagya, G Harish, M M Srinivas Bharath, B S Shankaranarayana Rao
Severe and prolonged stress is the main environmental factor that precipitates depression, anxiety and cognitive dysfunctions. On the other hand, exposure to environmental enrichment (EE) has been shown to induce progressive plasticity in the brain and improve learning and memory in various neurological and psychiatric disorders. It is not known whether exposure to enriched environment could ameliorate chronic immobilisation stress-induced cognitive deficits and altered molecular markers. Hence, in the present study we aimed to evaluate the effect of enriched environment on chronic immobilisation stress (CIS) associated changes in spatial learning and memory, behavioural measures of anxiety, depression and molecular markers as well as structural alterations...
March 10, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28288551/repetitive-closed-head-impact-model-of-engineered-rotational-acceleration-induces-long-term-cognitive-impairments-with-persistent-astrogliosis-and-microgliosis-in-mice
#17
Huazhen Chen, Abhishek Desai, Hee-Yong Kim
Repeated mild traumatic brain injury (rmTBI) has been identified as a high-risk factor for dementia at a later stage by epidemiology. The animal models to replicate complex features of human rmTBI and/or to evaluate long-term effects on brain function have not been established. In this study, we used a novel Closed-Head Impact Model of Engineered Rotational Acceleration (CHIMERA) to investigate long-term neuropathological and cognitive functional consequences of rmTBI. Adult C57BL/6 male mice were subjected to CHIMERA for three consecutive days 24 h apart...
March 13, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28287184/a-disease-severity-index-to-identify-individuals-with-subjective-memory-decline-who-will-progress-to-mild-cognitive-impairment-or-dementia
#18
Daniel Ferreira, Farshad Falahati, Cecilia Linden, Rachel F Buckley, Kathryn A Ellis, Greg Savage, Victor L Villemagne, Christopher C Rowe, David Ames, Andrew Simmons, Eric Westman
Subjective memory decline (SMD) is a heterogeneous condition. While SMD might be the earliest sign of Alzheimer's disease (AD), it also occurs in aging and various neurological, medical, and psychiatric conditions. Identifying those with higher risk to develop dementia is thus a major challenge. We tested a novel disease severity index generated by multivariate data analysis with numerous structural MRI measures as input. The index was used to identify SMD individuals with high risk of progression to mild cognitive impairment (MCI) or AD...
March 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28286189/safety-and-tolerability-of-a-dried-aqueous-spearmint-extract
#19
Joanne A Lasrado, Kristin M Nieman, Brenda A Fonseca, Kristen D Sanoshy, Arianne L Schild, Kelli A Herrlinger
Spearmint (Mentha spicata L.) and spearmint extracts are Generally Recognized as Safe (GRAS) for use as flavoring in beverages, pharmaceuticals, and confectionaries. Studies of spearmint extracts in humans and animals have reported conflicting results with respect to toxicity. Since the chemical composition of these extracts was not reported and the spearmint source material was different, the relevance of these existing data to evaluating the risks associated with ingestion of a dried aqueous spearmint extract standardized to rosmarinic acid is not clear...
March 7, 2017: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/28285131/retrieval-under-stress-decreases-the-long-term-expression-of-a-human-declarative-memory-via-reconsolidation
#20
Pablo Nicolás Fernández Larrosa, Alejandro Ojea, Ignacio Ojea, Victor Alejandro Molina, María Aurelia Zorrilla-Zubilete, Alejandro Delorenzi
Acute stress impairs memory retrieval of several types of memories. An increase in glucocorticoids, several minutes after stressful events, is described as essential to the impairing retrieval-effects of stressors. Moreover, memory retrieval under stress can have long-term consequences. Through what process does the reactivated memory under stress, despite the disrupting retrieval effects, modify long-term memories? The reconsolidation hypothesis proposes that a previously consolidated memory reactivated by a reminder enters a vulnerability phase (labilization) during which it is transiently sensitive to modulation, followed by a re-stabilization phase...
March 8, 2017: Neurobiology of Learning and Memory
keyword
keyword
27218
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"