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https://www.readbyqxmd.com/read/28734089/dementia-risk-and-prevention-by-targeting-modifiable-vascular-risk-factors
#1
REVIEW
Sana Tariq, Philip A Barber
The incidence of dementia is expected to double in the next 20 years and will contribute to heavy social and economic burden. Dementia is caused by neuronal loss that leads to brain atrophy years before symptoms manifest. Currently, no cure exists and extensive efforts are being made to mitigate cognitive impairment in late life in order to reduce the burden on patients, caregivers, and society. The most common type of dementia, Alzheimer's disease (AD), and vascular dementia (VaD) often co-exists in the brain and shares common, modifiable risk factors, which are targeted in numerous secondary prevention trials...
July 22, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28734059/localized-reductions-in-resting-state-functional-connectivity-in-children-with-prenatal-alcohol-exposure
#2
Jia Fan, Paul A Taylor, Sandra W Jacobson, Christopher D Molteno, Suril Gohel, Bharat B Biswal, Joseph L Jacobson, Ernesta M Meintjes
Fetal alcohol spectrum disorders (FASD) are characterized by impairment in cognitive function that may or may not be accompanied by craniofacial anomalies, microcephaly, and/or growth retardation. Resting-state functional MRI (rs-fMRI), which examines the low-frequency component of the blood oxygen level dependent (BOLD) signal in the absence of an explicit task, provides an efficient and powerful mechanism for studying functional brain networks even in low-functioning and young subjects. Studies using independent component analysis (ICA) have identified a set of resting-state networks (RSNs) that have been linked to distinct domains of cognitive and perceptual function, which are believed to reflect the intrinsic functional architecture of the brain...
July 22, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28732208/longitudinal-investigation-of-the-parietal-lobe-anatomy-in-bipolar-disorder-and-its-association-with-general-functioning
#3
Adele Ferro, Carolina Bonivento, Giuseppe Delvecchio, Marcella Bellani, Cinzia Perlini, Nicola Dusi, Veronica Marinelli, Mirella Ruggeri, A Carlo Altamura, Benedicto Crespo-Facorro, Paolo Brambilla
The parietal lobe (PL) supports cognitive domains, including attention and memory, which are impaired in bipolar disorder (BD). Although cross-sectional voxel-based morphometry studies found reduced PL grey matter (GM) in BD, none has longitudinally focused on PL anatomy in BD, relating it to patients' functioning. Thirty-eight right-handed BD patients and 42 matched healthy subjects (HS) underwent a Magnetic Resonance Imaging (MRI) scan at baseline. Seventeen BD patients and 16 matched HS underwent a follow-up MRI...
June 20, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28731449/cerebrospinal-fluid-neurogranin-as-a-biomarker-of-neurodegenerative-diseases-a-cross-sectional-study
#4
Simone Lista, Nicola Toschi, Filippo Baldacci, Henrik Zetterberg, Kaj Blennow, Ingo Kilimann, Stefan J Teipel, Enrica Cavedo, Antonio Melo Dos Santos, Stéphane Epelbaum, Foudil Lamari, Bruno Dubois, Robert Nisticò, Roberto Floris, Francesco Garaci, Harald Hampel
We investigated cerebrospinal fluid (CSF) concentrations of the postsynaptic biomarker neurogranin at baseline in cognitively healthy controls (HC) compared to individuals with mild cognitive impairment (MCI), patients with Alzheimer's disease (AD) dementia, and patients with frontotemporal dementia (FTD). CSF neurogranin was quantified using an in-house immunoassay in a cross-sectional multicenter study of 108 participants [AD dementia (n = 35), FTD (n = 9), MCI (n = 41), cognitively HC (n = 23)]...
July 18, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28730563/functional-connectivity-and-cognitive-impairment-in-migraine-with-and-without-aura
#5
Viviana Lo Buono, Lilla Bonanno, Francesco Corallo, Laura Rosa Pisani, Riccardo Lo Presti, Rosario Grugno, Giuseppe Di Lorenzo, Placido Bramanti, Silvia Marino
BACKGROUND: Several fMRI studies in migraine assessed resting state functional connectivity in different networks suggesting that this neurological condition was associated with brain functional alteration. The aim of present study was to explore the association between cognitive functions and cerebral functional connectivity, in default mode network, in migraine patients without and with aura, during interictal episodic attack. METHODS: Twenty-eight migraine patients (14 without and 14 with aura) and 14 matched normal controls, were consecutively recruited...
December 2017: Journal of Headache and Pain
https://www.readbyqxmd.com/read/28729833/altered-neuronal-activity-topography-markers-in-the-elderly-with-increased-atherosclerosis
#6
Takashi Shibata, Toshimitu Musha, Yukio Kosugi, Michiya Kubo, Yukio Horie, Naoya Kuwayama, Satoshi Kuroda, Karin Hayashi, Yohei Kobayashi, Mieko Tanaka, Haruyasu Matsuzaki, Kiyotaka Nemoto, Takashi Asada
Background: Previously, we reported on vascular cognitive impairment (VCI) templates, consisting of patients with VCI associated with carotid stenosis (>60%) using a quantitative electroencephalographic (EEG) technique called neuronal activity topography (NAT). Here using the VCI templates, we investigated the hypothesis that internal carotid artery-intima-media thickness (ICA-IMT) is associated with EEG spectrum intensity (sNAT) and spectrum steepness (vNAT). Methods: A total of 221 community-dwelling elderly subjects were recruited...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28729388/effects-of-acute-hypoxia-on-human-cognitive-processing-a-study-using-erps-and-seps
#7
Hiroki Nakata, Tadayoshi Miyamoto, Shigehiko Ogoh, Ryusuke Kakigi, Manabu Shibasaki
Although hypoxia has the potential to impair the cognitive function, the effects of acute hypoxia on the high-order brain function (executive and/or inhibitory processing) and somatosensory ascending processing remain unknown. We tested the hypothesis that acute hypoxia impairs both motor executive and inhibitory processing and somatosensory ascending processing. Fifteen healthy subjects performed two sessions (Sessions 1 and 2) consisting of electroencephalographic event-related potentials (ERPs) with somatosensory Go/No-go paradigms and somatosensory-evoked potentials (SEPs) under two conditions (hypoxia and normoxia) on different days...
July 20, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28729138/spatial-working-memory-in-the-touchscreen-operant-platform-is-disrupted-in-female-rats-by-ovariectomy-but-not-estrous-cycle
#8
Alyssa M Sbisa, Andrea Gogos, Maarten van den Buuse
Learning and memory deficits have been described in rats and mice after ovariectomy (OVX) and across the estrous cycle. Preclinical researchers therefore often avoid using female animals and, consequently, a large male bias exists in the preclinical cognitive literature. In the present study we examined the role of sex hormones in the touchscreen operant platform using the spatial working memory trial unique nonmatching-to-location (TUNL) task. Twenty-nine Long Evans rats were trained to acquire the TUNL task including three incremental spatial separations (S0, S1, S2)...
July 17, 2017: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/28729016/learning-based-structurally-guided-construction-of-resting-state-functional-correlation-tensors
#9
Lichi Zhang, Han Zhang, Xiaobo Chen, Qian Wang, Pew-Thian Yap, Dinggang Shen
Functional magnetic resonance imaging (fMRI) measures changes in blood-oxygenation-level-dependent (BOLD) signals to detect brain activities. It has been recently reported that the spatial correlation patterns of resting-state BOLD signals in the white matter (WM) also give WM information often measured by diffusion tensor imaging (DTI). These correlation patterns can be captured using functional correlation tensor (FCT), which is analogous to the diffusion tensor (DT) obtained from DTI. In this paper, we propose a noise-robust FCT method aiming at further improving its quality, and making it eligible for further neuroscience study...
July 17, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28727639/effects-of-12-week-resistance-exercise-on-electroencephalogram-patterns-and-cognitive-function-in-the-elderly-with-mild-cognitive-impairment-a-randomized-controlled-trial
#10
Soon-Gook Hong, June-Hong Kim, Tae-Won Jun
OBJECTIVE: To investigate the effects of a 12-week resistance exercise program with an elastic band on electroencephalogram (EEG) patterns and cognitive function in elderly patients with mild cognitive impairment (MCI). DESIGN: Randomized controlled trial. SETTING: Community center. PARTICIPANTS: Twenty-two subjects with MCI and 25 healthy volunteer subjects were randomly assigned to 1 of 4 groups: subjects with MCI who undertook the exercise program (MCI-EX; n = 10), an MCI control group (MCI-Con; n = 12), a healthy volunteer exercise group (NG-EX; n = 12), and a healthy volunteer control group (NG-Con; n = 13)...
July 14, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28726492/does-cognition-specific-computer-training-have-better-clinical-outcomes-than-non-specific-computer-training-a-single-blind-randomized-controlled-trial
#11
Ji-Hyuk Park, Jin-Hyuck Park
OBJECTIVE: The purpose of this study was to investigate differences between non-specific computer training (NCT) and cognition-specific computer training (CCT). DESIGN: Randomized controlled experimental study. SETTING: Local community welfare center. SUBJECTS: A total of 78 subjects with mild cognitive impairment (MCI) were randomly assigned to the NCT ( n = 39) or CCT group ( n = 39). INTERVENTION: The NCT group underwent NCT using Nintendo Wii for improving functional performance, while the CCT group underwent CCT using CoTras for improving function of the cognitive domain specifically...
July 1, 2017: Clinical Rehabilitation
https://www.readbyqxmd.com/read/28726038/subjective-cognitive-decline-and-fall-risk-in-community-dwelling-older-adults-with-or-without-objective-cognitive-decline
#12
Hidehiko Shirooka, Shu Nishiguchi, Naoto Fukutani, Yuto Tashiro, Yuma Nozaki, Tomoki Aoyama
BACKGROUND: The association between subjective cognitive decline and falls has not been clearly determined. AIMS: Our aim was to explore the effect of subjective cognitive decline on falls in community-dwelling older adults with or without objective cognitive decline. METHODS: We included 470 older adults (mean age 73.6 ± 5.2; 329 women) living in the community and obtained data on fall history directly from the participants. Subjective cognitive decline was assessed using a self-administered question...
July 19, 2017: Aging Clinical and Experimental Research
https://www.readbyqxmd.com/read/28725289/amnestic-mci-patients-perspectives-toward-disclosure-of-amyloid-pet-results-in-a-research-context
#13
Gwendolien Vanderschaeghe, Jolien Schaeverbeke, Rik Vandenberghe, Kris Dierickx
BACKGROUND: Researchers currently are not obligated to share individual research results (IRR) with participants. This non-disclosure policy has been challenged on the basis of participants' rights to be aware and in control of their personal medical information. Here, we determined how patients view disclosure of research PET results of brain amyloid and why they believe it is advantageous or disadvantageous to disclose. METHOD: As a part of a larger diagnostic trial, we conducted semi-structured interviews with patients with amnestic Mild Cognitive Impairment (aMCI)...
2017: Neuroethics
https://www.readbyqxmd.com/read/28725190/reliability-of-eeg-interactions-differs-between-measures-and-is-specific-for-neurological-diseases
#14
Yvonne Höller, Kevin Butz, Aljoscha Thomschewski, Elisabeth Schmid, Andreas Uhl, Arne C Bathke, Georg Zimmermann, Santino O Tomasi, Raffaele Nardone, Wolfgang Staffen, Peter Höller, Markus Leitinger, Julia Höfler, Gudrun Kalss, Alexandra C Taylor, Giorgi Kuchukhidze, Eugen Trinka
Alterations of interaction (connectivity) of the EEG reflect pathological processes in patients with neurologic disorders. Nevertheless, it is questionable whether these patterns are reliable over time in different measures of interaction and whether this reliability of the measures is the same across different patient populations. In order to address this topic we examined 22 patients with mild cognitive impairment, five patients with subjective cognitive complaints, six patients with right-lateralized temporal lobe epilepsy, seven patients with left lateralized temporal lobe epilepsy, and 20 healthy controls...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28724385/increase-of-cytosolic-phospholipase-a2-as-hydrolytic-enzyme-of-phospholipids-and-autism-cognitive-social-and-sensory-dysfunction-severity
#15
Hanan Qasem, Laila Al-Ayadhi, Hussain Al Dera, Afaf El-Ansary
BACKGROUND: Autism is neurodevelopmental disorder that is characterized by developmental, behavioral, social and sensory abnormalities. Researchers have focused in last years in immunological alteration and inflammation as a hot subject in autism field. This work aims to study the alteration in phospholipids (PE, PS, and PC) together with the change in cPLA2 concentration as the main phospholipid hydrolytic enzyme in autistic patients compared to control. It was also extended to find a correlation between these biomarkers and severity of autism measured as childhood autism rating scale (CARS), Social responsiveness scale (SRS), and Short sensory profile (SSP)...
June 15, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28724382/activation-of-cannabinoid-receptor-type-2-attenuates-surgery-induced-cognitive-impairment-in-mice-through-anti-inflammatory-activity
#16
Lingling Sun, Rui Dong, Xin Xu, Xi Yang, Mian Peng
BACKGROUND: Neuroinflammation plays a major role in postoperative cognitive dysfunction (POCD). Accumulated evidence indicates that cannabinoid receptor type 2 (CB2R) can mediate anti-inflammatory and immunomodulatory effects in part by controlling microglial activity. However, the impact of CB2R on postoperative cognition has not been investigated. We hypothesized that CB2R is involved in surgery-induced cognitive impairment in adult mice. METHODS: Adult C57BL/6 mice were subjected to intramedullary fixation surgery for tibial fracture under isoflurane anesthesia and CB2R agonist (JWH133) or CB2R antagonist (AM630) treatment...
July 19, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28721741/the-relevance-of-hippocampal-subfield-integrity-and-clock-drawing-test-performance-for-the-diagnosis-of-alzheimer-s-disease-and-mild-cognitive-impairment
#17
Dusan Hirjak, Fabio Sambataro, Barbara Remmele, Katharina M Kubera, Johannes Schröder, Ulrich Seidl, Anne K Thomann, Klaus H Maier-Hein, Robert C Wolf, Philipp A Thomann
OBJECTIVES: The clock drawing test (CDT) is one of the worldwide most used screening tests for Alzheimer's disease (AD). MRI studies have identified temporo-parietal regions being involved in CDT impairment. However, the contributions of the hippocampal formation to CDT performance in AD and mild cognitive impairment (MCI) have not been investigated so far. It is unclear whether morphological alterations or CDT score, or a combination of both, are able to predict AD. METHODS: 38 AD patients, 38 MCI individuals and 31 healthy controls underwent neuropsychological assessment and MRI at 3 Tesla...
July 19, 2017: World Journal of Biological Psychiatry
https://www.readbyqxmd.com/read/28721430/two-way-bridge-between-muscular-dysfunction-and-cognitive-impairment-secondary-analyses-of-sabe-bogota-study
#18
E Garcia-Cifuentes, D G David-Pardo, M G Borda, M U Perez-Zepeda, C A Cano-Gutiérrez
BACKGROUND AND OBJECTIVE: Muscular dysfunction and cognitive impairment are both disabling states, affecting especially the elderly. Thus, are important subjects of research. Our goal is to describe the association between these two entities in the elderly. METHODS: This is a secondary analysis from the SABE 2012 Bogota survey, which is a cross-sectional study. We define muscular dysfunction as an abnormal result in gait speed and/or handgrip strength tasks. Cognitive impairment was defined as an abnormal result in Mini Mental State Examination...
2017: Journal of Frailty & Aging
https://www.readbyqxmd.com/read/28721302/correlation-between-two-methods-of-florbetapir-pet-quantitative-analysis
#19
Christopher Breault, Jonathan Piper, Abhinay D Joshi, Sara D Pirozzi, Aaron S Nelson, Ming Lu, Michael J Pontecorvo, Mark A Mintun, Michael D Devous
This study evaluated performance of a commercially available standardized software program for calculation of florbetapir PET standard uptake value ratios (SUVr) in comparison with an established research method. Florbetapir PET images for 183 subjects clinically diagnosed as cognitively normal (CN), mild cognitive impairment (MCI) or probable Alzheimer's disease (AD) (45 AD, 60 MCI, and 78 CN) were evaluated using two software processing algorithms. The research method uses a single florbetapir PET template generated by averaging both amyloid positive and amyloid negative registered brains together...
2017: American Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28720379/inhibition-of-12-15-lox-ameliorates-cognitive-and-cholinergic-dysfunction-in-mouse-model-of-hypobaric-hypoxia-via-attenuation-of-oxidative-nitrosative-stress
#20
Richa Choudhary, Udayabanu Malairaman, Anju Katyal
12/15 Lipoxygenase has recently been described as potent propagator of oxidative stress and is closely associated with cognitive decline in neurodegenerative diseases. The mechanism/s behind 12/15 LOX involvement in cognitive deficits remain obscure. The current study has been designed to investigate the underlying role of 12/15LOX and effect of 12/15 LOX inhibition on hypobaric hypoxia-induced memory impairment and cholinergic deficits. Male Balb/c mice subjected to simulated hypobaric hypoxia/reoxygenation condition for 3days showed marked working memory impairment concomitant with hippocampal neuronal damage and malondialdehyde production which were significantly attenuated by baicalein, a specific inhibitor of 12/15LOX...
July 15, 2017: Neuroscience
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