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https://www.readbyqxmd.com/read/29328963/the-effect-of-white-matter-hyperintensities-on-cognition-is-mediated-by-cortical-atrophy
#1
Batool Rizvi, Atul Narkhede, Briana S Last, Mariana Budge, Giuseppe Tosto, Jennifer J Manly, Nicole Schupf, Richard Mayeux, Adam M Brickman
White matter hyperintensities (WMH) have been linked to cognitive dysfunction and dementia, although the reasons are unclear. One possibility is that WMH promote neurodegeneration, which, in turn, affects cognition. We examined whether cortical thickness, a marker of neurodegeneration, mediates the relationship between WMH and cognition among 519 older adults. Using conditional process analysis modeling techniques, we examined the association between WMH volume and global cognition and tested whether cortical thickness mediates this relationship statistically...
December 16, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/29310343/cerebrospinal-fluid-real-time-quaking-induced-conversion-test-for-sporadic-creutzfeldt-jakob-disease-in-an-18-year-old-woman-a-case-report
#2
Yuan Yao, Xiaoping Dong, Hongzhi Guan, Qiang Lu
RATIONALE: Sporadic Creutzfeldt-Jakob disease (sCJD) mainly occurs in the elderly, with the peak age of onset ranging from 55 to 75 years. The symptoms of sCJD are not unique, and laboratory tests such as magnetic resonance imaging (MRI), electroencephalogram (EEG) and cerebrospinal fluid (CSF)14-3-3 protein have low sensitivity or specificity. Therefore, excluding treatable diseases and establishing a diagnosis could be difficult in young patients with suspected sCJD. Recently, real-time quaking-induced conversion (RT-QuIC) has been used in the diagnosis of sCJD, with more than 95% sensitivity and 100% specificity...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29300438/association-between-red-blood-cells-omega-3-polyunsaturated-fatty-acids-and-white-matter-hyperintensities-the-mapt-study
#3
S Y Moon, P de Souto Barreto, M Chupin, J F Mangin, A Bouyahia, L Fillon, S Andrieu, B Vellas
OBJECTIVES: The association between circulating biomarkers of red blood cells (RBC) omega-3 polyunsaturated fatty acids (PUFAs) and cerebral white matter hyperintensities (WMH) on the brain MRI remains yet unclear. We investigated the cross-sectional and prospective associations of RBC omega-3 PUFAs with WMH in dementia-free older adults with subjective memory complaints. DESIGN: Participants were 234 older adults with assessments for both PUFA and MRI near to baseline; among them, 79 also had an MRI assessment at 3-year follow-up...
2018: Journal of Nutrition, Health & Aging
https://www.readbyqxmd.com/read/29284725/carotid-intima-media-thickness-is-associated-with-white-matter-hyperintensities-the-northern-manhattan-study
#4
David Della-Morte, Chuanhui Dong, Matthew S Markert, Mitchell S V Elkind, Ralph L Sacco, Clinton B Wright, Tatjana Rundek
BACKGROUND AND PURPOSE: Brain white matter hyperintensities (WMH) have been associated with increased risk of stroke, cognitive decline, and dementia. WMH can be a manifestation of small vessel disease, although the total microvascular contribution to multifactorial WMH pathophysiology remains unknown. We hypothesized a possible relationship between carotid intima-media thickness (cIMT), an ultrasound imaging marker of subclinical vascular disease, and brain WMH in a multiethnic, elderly stroke-free community-based cohort...
December 28, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/29284531/cerebrovascular-and-amyloid-pathology-in-predementia-stages-the-relationship-with-neurodegeneration-and-cognitive-decline
#5
Isabelle Bos, Frans R Verhey, Inez H G B Ramakers, Heidi I L Jacobs, Hilkka Soininen, Yvonne Freund-Levi, Harald Hampel, Magda Tsolaki, Åsa K Wallin, Mark A van Buchem, Ania Oleksik, Marcel M Verbeek, Marcel Olde Rikkert, Wiesje M van der Flier, Philip Scheltens, Pauline Aalten, Pieter Jelle Visser, Stephanie J B Vos
BACKGROUND: Cerebrovascular disease (CVD) and amyloid-β (Aβ) often coexist, but their influence on neurodegeneration and cognition in predementia stages remains unclear. We investigated the association between CVD and Aβ on neurodegenerative markers and cognition in patients without dementia. METHODS: We included 271 memory clinic patients with subjective or objective cognitive deficits but without dementia from the BioBank Alzheimer Center Limburg cohort (n = 99) and the LeARN (n = 50) and DESCRIPA (n = 122) multicenter studies...
December 29, 2017: Alzheimer's Research & Therapy
https://www.readbyqxmd.com/read/29232183/loss-of-substantia-nigra-hyperintensity-at-3-0-t-mr-imaging-in-idiopathic-rem-sleep-behavior-disorder-comparison-with-123i-fp-cit-spect
#6
Yun Jung Bae, Jong-Min Kim, Kyeong Joon Kim, Eunhee Kim, Hyun Soo Park, Seo Young Kang, In-Young Yoon, Jee-Young Lee, Beomseok Jeon, Sang Eun Kim
Purpose To examine whether the loss of nigral hyperintensity (NH) on 3.0-T susceptibility-weighted (SW) magnetic resonance (MR) images can help identify high synucleinopathy risk in patients with idiopathic rapid eye movement sleep behavior disorder (iRBD). Materials and Methods Between March 2014 and April 2015, 18 consecutively recruited patients with iRBD were evaluated with 3.0-T SW imaging and iodine 123-2β-carbomethoxy-3β-(4-iodophenyl)-N-(3-fluoropropyl)-nortropane (123I-FP-CIT) single photon emission computed tomography and compared with 18 healthy subjects and 18 patients with Parkinson disease (PD)...
December 12, 2017: Radiology
https://www.readbyqxmd.com/read/29210074/white-matter-degeneration-in-vascular-and-other-ageing-related-dementias
#7
REVIEW
Yoshika Hase, Karen Horsburgh, Masafumi Ihara, Raj N Kalaria
Advances in neuroimaging have enabled greater understanding of the progression of cerebral degenerative processes associated with ageing-related dementias. Leukoaraiosis or rarefied white matter (WM) originally described on computed tomography is one of the most prominent changes which occurs in older age. White matter hyperintensities (WMH) evident on magnetic resonance imaging have become commonplace to describe WM changes in relation to cognitive dysfunction, types of stroke injury, cerebral small vessel disease and neurodegenerative disorders including Alzheimer's disease...
December 6, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/29170267/perivascular-spaces-in-old-age-assessment-distribution-and-correlation-with-white-matter-hyperintensities
#8
A Laveskog, R Wang, L Bronge, L-O Wahlund, C Qiu
BACKGROUND AND PURPOSE: The visual rating scales for perivascular spaces vary considerably. We sought to develop a new scale for visual assessment of perivascular spaces and to further describe their distribution and association with white matter hyperintensities in old age. MATERIALS AND METHODS: This population-based study included 530 individuals who did not have dementia and were not institutionalized (age, ≥60 years or older; mean age, 70.7 years; 58.9% women) who were living in central Stockholm, Sweden...
November 23, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/29159396/association-of-nonalcoholic-fatty-liver-disease-with-lower-brain-volume-in-healthy-middle-aged-adults-in-the-framingham-study
#9
Galit Weinstein, Shira Zelber-Sagi, Sarah R Preis, Alexa S Beiser, Charles DeCarli, Elizabeth K Speliotes, Claudia L Satizabal, Ramachandran S Vasan, Sudha Seshadri
Importance: Nonalcoholic fatty liver disease (NAFLD) is a common condition that is most often asymptomatic. It is associated with metabolic syndrome, incident diabetes, carotid atherosclerosis, and endothelial dysfunction, conditions that in turn are strongly linked with brain damage and cognitive impairment. However, it is not known whether NAFLD is associated with structural brain measures in humans. Objective: To assess the association between prevalent NAFLD and brain magnetic resonance imaging (MRI) measures...
November 20, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/29156222/cerebral-small-vessel-disease-in-middle-age-and-genetic-predisposition-to-late-onset-alzheimer-s-disease
#10
James D Stefaniak, Li Su, Elijah Mak, Nasim Sheikh Bahaei, Katie Wells, Karen Ritchie, Adam Waldman, Craig W Ritchie, John T O'Brien
INTRODUCTION: Cerebral small vessel disease (CSVD) is associated with late-onset Alzheimer's disease (LOAD) and might contribute to the relationship between apolipoprotein E ε4 (APOEε4) and LOAD, in older people. However, it is unclear whether CSVD begins in middle age in individuals genetically predisposed to LOAD. METHODS: We assessed the relationship between radiological markers of CSVD, white matter hyperintensities and microbleeds, and genetic predisposition to LOAD in a cross-sectional analysis of cognitively normal subjects aged 40-59 years recruited from the PREVENT Dementia study...
November 18, 2017: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
https://www.readbyqxmd.com/read/29106439/increased-diastolic-blood-pressure-is-associated-with-mri-biomarkers-of-dementia-related-brain-pathology-in-normative-ageing
#11
Christopher J McNeil, Phyo Kyaw Myint, Anca-Larisa Sandu, John F Potter, Roger Staff, Lawrence J Whalley, Alison D Murray
Background: hypertension is a risk for brain ageing, but the mechanisms underlying this effect remain unclear. Magnetic resonance imaging (MRI) detected biomarkers of brain ageing include white matter hyperintensities (WMHs), a marker of cerebrovascular disease, and hippocampal volume, a marker of Alzheimer's disease pathology. Objective: to examine relationships between blood pressure (BP) components and brain pathology in older adults. Subjects: two hundred and twenty-seven members of the Aberdeen 1936 Birth Cohort between ages 64 and 68 years...
January 1, 2018: Age and Ageing
https://www.readbyqxmd.com/read/29084064/new-insights-into-cerebral-small-vessel-disease-and-vascular-cognitive-impairment-from-mri
#12
Eric E Smith, Andrew E Beaudin
PURPOSE OF REVIEW: We review recent MRI research that addresses two important challenges in cerebral small vessel disease (SVD) research: early diagnosis, and linking SVD with cognitive impairment. First, we review studies of MRI measurements of blood flow and blood-brain barrier integrity. Second, we review MRI studies identifying neuroimaging correlates of SVD-related cognitive dysfunction, focusing on brain connectivity and white matter microarchitecture. This research is placed in context through discussion of recent recommendations for management of incidentally discovered SVD, and neuroimaging biomarker use in clinical trials...
February 2018: Current Opinion in Neurology
https://www.readbyqxmd.com/read/29055464/autosomal-dominant-leukodystrophy-presenting-as-alzheimer-s-type-dementia
#13
Valeria Sandoval-Rodríguez, Mariana Aurora Cansino-Torres, Michel Sáenz-Farret, Gema Castañeda-Cisneros, Gabriel Moreno, Carlos Zúñiga-Ramírez
Autosomal dominant leukodystrophy is a neurodegenerative disorder caused by either point mutations or duplication of the lamin B1 gene on chromosome 5q23. The typical clinical picture consists of autonomic symptoms as well as cerebellar and pyramidal signs. Here we present the case of a 57-year-old female referred to our clinic due to cognitive decline. Neurological examination was significant for cognitive impairment as well as pyramidal and cerebellar signs. Brain MRI displayed diffuse hyperintense lesions in the subcortical white matter, pontine nuclei, brachium pontis and restiform body...
October 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/29042572/diagonal-earlobe-crease-is-a-visible-sign-for-cerebral-small-vessel-disease-and-amyloid-%C3%AE
#14
Jin San Lee, Seongbeom Park, Hee Jin Kim, Yeshin Kim, Hyemin Jang, Ko Woon Kim, Hak Young Rhee, Sung Sang Yoon, Kyoung Jin Hwang, Key-Chung Park, Seung Hwan Moon, Sung Tae Kim, Samuel N Lockhart, Duk L Na, Sang Won Seo
We investigated the frequency and clinical significance of diagonal earlobe crease (DELC) in cognitively impaired patients using imaging biomarkers, such as white matter hyperintensities (WMH) on MRI and amyloid-β (Aβ) PET. A total of 471 cognitively impaired patients and 243 cognitively normal (CN) individuals were included in this study. Compared with CN individuals, cognitively impaired patients had a greater frequency of DELC (OR 1.6, 95% CI 1.1-2.2, P = 0.007). This relationship was more prominent in patients with dementia (OR 1...
October 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29036822/cortical-cerebral-microinfarcts-on-3-tesla-mri-in-patients-with-vascular-cognitive-impairment
#15
Doeschka A Ferro, Susanne J van Veluw, Huiberdina L Koek, Lieza G Exalto, Geert Jan Biessels
BACKGROUND: Cerebral microinfarcts (CMIs) are small ischemic lesions that are a common neuropathological finding in patients with stroke or dementia. CMIs in the cortex can now be detected in vivo on 3 Tesla MRI. OBJECTIVE: To determine the occurrence of CMIs and associated clinical features in patients with possible vascular cognitive impairment (VCI). METHOD: 182 memory-clinic patients (mean age 71.4±10.6, 55% male) with vascular injury on brain MRI (i...
October 12, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28984600/plasma-amyloid-%C3%AE-levels-cerebral-small-vessel-disease-and-cognition-the-rotterdam-study
#16
Saima Hilal, Saloua Akoudad, Cornelia M van Duijn, Wiro J Niessen, Marcel M Verbeek, Hugo Vanderstichele, Erik Stoops, M Arfan Ikram, Meike W Vernooij
BACKGROUND: Plasma amyloid-β (Aβ) levels are increasingly studied as a potential, accessible marker of cognitive impairment and dementia. The most common plasma Aβ isoforms, i.e., Aβ1-40 and Aβ1-42 have been linked with risk of Alzheimer's disease. However, it remains under-explored whether plasma Aβ levels including novel Aβ1-38 relate to vascular brain disease and cognition in a preclinical-phase of dementiaObjective:To examine the association of plasma Aβ levels (i.e., Aβ1-38, Aβ1-40, and Aβ1-42) with markers of cerebral small vessel disease (SVD) and cognition in a large population-based setting...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28978655/change-in-multimodal-mri-markers-predicts-dementia-risk-in-cerebral-small-vessel-disease
#17
Eva A Zeestraten, Andrew J Lawrence, Christian Lambert, Philip Benjamin, Rebecca L Brookes, Andrew D Mackinnon, Robin G Morris, Thomas R Barrick, Hugh S Markus
OBJECTIVE: To determine whether MRI markers, including diffusion tensor imaging (DTI), can predict cognitive decline and dementia in patients with cerebral small vessel disease (SVD). METHODS: In the prospective St George's Cognition and Neuroimaging in Stroke study, multimodal MRI was performed annually for 3 years and cognitive assessments annually for 5 years in a cohort of 99 patients with SVD, defined as symptomatic lacunar stroke and confluent white matter hyperintensities (WMH)...
October 31, 2017: Neurology
https://www.readbyqxmd.com/read/28953609/incidence-and-risk-factors-of-leukoaraiosis-from-4683-hospitalized-patients-a-cross-sectional-study
#18
Qing Lin, Wen-Qing Huang, Qi-Lin Ma, Cong-Xia Lu, Sui-Jun Tong, Jin-Hu Ye, Hui-Nuan Lin, Long Gu, Ke-Hui Yi, Liang-Liang Cai, Chi-Meng Tzeng
Leukoaraiosis (LA) refers to white matter hyperintensities or white matter lesions (WMLs) on magnetic resonance imaging (MRI) scans of the brain; this disease is associated with an increased risk of stroke, dementia, and cognitive decline. The aims of the study are to assess the incidence of LA and its associated risk factors in a Chinese population.A hospital-based cross-sectional study was conducted that included 4683 patients who were 40 years or older. Data collected included age, sex, hypertension, diabetes, smoking, drinking, homocysteine (HCY), and low-density lipoprotein cholesterol (LDL-C) levels in the blood in addition to brain MRI information...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28950920/the-association-between-systolic-blood-pressure-variability-with-depression-cognitive-decline-and-white-matter-hyperintensities-the-3c-dijon-mri-study
#19
P J Tully, S Debette, C Tzourio
BACKGROUND: Accumulating evidence links blood pressure variability (BPV) with white matter hyperintensities (WMH) and stroke. The longitudinal association between BPV with late onset depression (LOD) and cognitive decline remains unexplored. METHODS: Prospective cohort study of 2812 participant's age ⩾65 years (median age 72 years, 63.6% female) without dementia or stroke. Serial clinic visits assessed blood pressure, cognitive function, depression disorder, and depressive symptoms...
September 27, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/28939709/topography-and-determinants-of-magnetic-resonance-imaging-mri-visible-perivascular-spaces-in-a-large-memory-clinic-cohort
#20
Sara Shams, Juha Martola, Andreas Charidimou, Mykol Larvie, Tobias Granberg, Mana Shams, Maria Kristoffersen-Wiberg, Lars-Olof Wahlund
BACKGROUND: Magnetic resonance imaging-visible perivascular spaces (PVS) are related to interstitial fluid clearance pathways (including amyloid-β) in the brain and are suggested to be a marker of cerebral small vessel disease. We investigated the role, topography, and possible implications of PVS in cognitive impairment. METHODS AND RESULTS: A total of 1504 patients undergoing memory clinic investigation and an associated brain magnetic resonance imaging scan were included in this cross-sectional study...
September 22, 2017: Journal of the American Heart Association
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