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https://www.readbyqxmd.com/read/28342896/neuroprotective-and-axonal-outgrowth-promoting-effects-of-tetramethylpyrazine-nitrone-in-chronic-cerebral-hypoperfusion-rats-and-primary-hippocampal-neurons-exposed-to-hypoxia
#1
Tao Zhang, Jianbo Gu, Liangmiao Wu, Ning Li, Yewei Sun, Pei Yu, Yuqiang Wang, Gaoxiao Zhang, Zaijun Zhang
Chronic cerebral hypoperfusion is an important risk factor for vascular dementia and other brain dysfunctions, for which there are currently no effective medications available. We investigated the neuroprotective and axonal outgrowth promoting effects of tetramethylpyrazine nitrone (TBN) in a permanent bilateral occlusion of the common carotid arteries (2VO) rat model and in primary hippocampal neurons exposed to oxygen glucose deprivation (OGD). At 6th week after 2VO, TBN increased the time spent in novel arms in the Y-maze test and improved the discrimination ratio in object reorganization task...
March 22, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28336553/tlr2-knockout-protects-against-diabetes-mediated-changes-in-cerebral-perfusion-and-cognitive-deficits
#2
Trevor Hardigan, Caterina Hernandez, Rebecca Ward, M Nasrul Hoda, Adviye Ergul
The risk of cognitive decline in diabetes (Type 1 and Type 2) is significantly greater compared to normoglycemic patients, and the risk of developing dementia in diabetic patients is doubled. The etiology for this is likely multifactorial, but one mechanism that has gained increasing attention is decreased cerebral perfusion as a result of cerebrovascular dysfunction. The innate immune system has been shown to play a role in diabetic vascular complications, notably through Toll-like receptor (TLR) stimulated release of pro-inflammatory cytokines and chemokines that leads to vascular damage...
February 22, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28336337/mismatch-negativity-as-a-potential-neurobiological-marker-of-early-stage-alzheimer-disease-and-vascular-dementia
#3
Shixiang Jiang, Chang Yan, Zhengxue Qiao, Haiqian Yao, Shiquan Jiang, Xiaohui Qiu, Xiuxian Yang, Deyu Fang, Yanjie Yang, Limei Zhang, Lina Wang, Liming Zhang
Alzheimer's disease (AD) and vascular dementia (VD) are serious, irreversible forms of cognitive impairment, which means that an early diagnosis is essential to slow down their progression. One potential neurophysiological biomarker of these diseases is the mismatch negativity (MMN) event-related potentials (ERP) component, which reflects an automatic detection mechanism at the pre-attentive stages of information processing. We evaluated the auditory MMN response in individuals from two patient groups: those in the prodromal stages of AD (P-AD) and those in the prodromal stages of VD (P-VD)...
March 20, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28330543/-vascular-dementia
#4
Kristian Steen Frederiksen
Vascular dementia comprises a heterogeneous group of conditions covering a range of clinical and neuropathological presentations of cerebrovascular disease-causing dementia. Vascular dementia is a common occurrence, but many questions regarding the disease remain unanswered. Recently, proposed criteria focus on constructing an overarching disease concept, which captures both pre-dementia stages and the clinical and neuropathological heterogeneity. Future research should focus on identifying subtypes with distinct pathophysiological mechanisms in order to facilitate treatment development...
March 20, 2017: Ugeskrift for Laeger
https://www.readbyqxmd.com/read/28326805/a-retrospective-analysis-of-care-in-patients-with-dementia-hospitalized-at-a-tertiary-medical-center
#5
Riddhi Patira, Huaqing Zhao, Ausim Azizi
BACKGROUND: Hospitalization is an opportunity to address various aspects related to management of dementia, including the goals of care to avoid futile care. We studied the prevalence of these factors when patients with dementia are hospitalized. DESIGN: One hundred and thirty-one charts of patients with dementia admitted to a single university-based hospital were retrospectively reviewed. Data were collected and analyzed for age, gender, the severity of dementia, co-morbidities, co-existing vascular dementia, reversible causes of dementia, mental status scores, medications, consultations, procedures, complications, availability of advance directives, decision-maker, code status, and goals of care discussion...
March 22, 2017: Aging & Mental Health
https://www.readbyqxmd.com/read/28325166/color-perception-differentiates-alzheimer-s-disease-ad-from-vascular-dementia-vad-patients
#6
N A Arnaoutoglou, M Arnaoutoglou, P Nemtsas, V Costa, S J Baloyannis, K P Ebmeier
BACKGROUND: Alzheimer's Disease (AD) and Vascular Dementia (VaD) are the most common causes of dementia in older people. Both diseases appear to have similar clinical symptoms, such as deficits in attention and executive function, but specific cognitive domains are affected. Current cohort studies have shown a close relationship between αβ deposits and age-related macular degeneration (Johnson et al., 2002; Ratnayaka et al., 2015). Additionally, a close link between the thinning of the retinal nerve fiber (RNFL) and AD patients has been described, while it has been proposed that AD patients suffer from a non-specific type of color blindness (Pache et al...
March 22, 2017: International Psychogeriatrics
https://www.readbyqxmd.com/read/28324763/interaction-of-apoe-e4-and-poor-glycemic-control-predicts-white-matter-hyperintensity-growth-from-73-to-76
#7
Simon R Cox, Stuart J Ritchie, David Alexander Dickie, Alison Pattie, Natalie A Royle, Janie Corley, Benjamin S Aribisala, Sarah E Harris, Maria Valdés Hernández, Alan J Gow, Susana Muñoz Maniega, John M Starr, Mark E Bastin, Joanna M Wardlaw, Ian J Deary
We examined whether apolipoprotein E (APOE) status interacts with vascular risk factors (VRFs) to predict the progression of white matter hyperintensities (WMHs) on brain MRI scans over a specific period of life in older age when the risk of dementia increases. At age 73 years, baseline VRFs were assessed via self-reported history of diabetes, hypertension, smoking, and hypercholesterolemia, and via objective measures of blood HbA1c, body mass index, diastolic and systolic blood pressure, and blood high-density lipoprotein to total cholesterol (HDL) ratio...
February 27, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28323826/apoe-related-risk-of-mild-cognitive-impairment-and-dementia-for-prevention-trials-an-analysis-of-four-cohorts
#8
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/28322777/preeclampsia-and-cognitive-impairment-later-in-life
#9
Julie A Fields, Vesna D Garovic, Michelle M Mielke, Kejal Kantarci, Muthuvel Jayachandran, Wendy M White, Alissa M Butts, Jonathan Graff-Radford, Brian D Lahr, Kent R Bailey, Virginia M Miller
BACKGROUND: Hypertension is a risk factor for cerebrovascular disease and cognitive impairment. Women who suffer hypertensive episodes during pregnancy report variable neurocognitive changes within the first decade following the affected pregnancy. However, long-term follow-up of these women into their post-menopausal years has not been conducted. OBJECTIVE: The aim of this study was to examine whether women with a history of preeclampsia were at increased risk of cognitive decline 35-40 years after the affected pregnancy...
March 17, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28322203/associations-between-%C3%AE-amyloid-and-white-matter-hyperintensities-a-systematic-review
#10
REVIEW
Austyn Roseborough, Joel Ramirez, Sandra E Black, Jodi D Edwards
INTRODUCTION: This systematic review synthesizes current evidence for associations between cortical β-amyloid, visualized on amyloid positron emission tomography imaging, and white matter hyperintensity (WMH) burden on magnetic resonance imaging in healthy elderly adults and individuals with cognitive impairment and dementia. METHODS: Following PRISMA systematic review guidelines, we systematically searched MEDLINE, Embase, Cochrane, and PsycINFO databases from January 2000 to September 2015...
March 16, 2017: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
https://www.readbyqxmd.com/read/28321015/association-between-retinal-vascular-changes-and-disabling-dementia
#11
Isao Saito
No abstract text is available yet for this article.
March 17, 2017: Journal of Atherosclerosis and Thrombosis
https://www.readbyqxmd.com/read/28320113/alzheimer-s-disease-elevated-pigment-epithelium-derived-factor-in-the-cerebrospinal-fluid-is-mostly-of-systemic-origin
#12
Veronika Lang, Marietta Zille, Carmen Infante-Duarte, Sven Jarius, Holger Jahn, Friedemann Paul, Klemens Ruprecht, Ana Luisa Pina
Pigment-epithelium derived factor (PEDF) is a neurotrophic factor with neuroprotective, anti-tumorigenic, and anti-angiogenic effects. Elevated levels of PEDF have previously been proposed as a cerebrospinal fluid (CSF) biomarker for Alzheimer's disease. However, the origin of PEDF in CSF, i.e. whether it is derived from the brain or from the systemic circulation, and the specificity of this finding hitherto remained unclear. Here, we analyzed levels of PEDF in paired CSF and serum samples by ELISA in patients with Alzheimer's disease (AD, n=12), frontotemporal dementia (FTD, n=6), vascular dementia (n=4), bacterial meningitis (n=8), multiple sclerosis (n=32), pseudotumor cerebri (n=36), and diverse non-inflammatory neurological diseases (n=19)...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28316570/isometric-exercise-training-for-managing-vascular-risk-factors-in-mild-cognitive-impairment-and-alzheimer-s-disease
#13
REVIEW
Nicole C L Hess, Neil A Smart
Alzheimer's disease (AD) is the most common form of dementia diagnosed amongst the elderly. Mild cognitive impairment (MCI) is a condition often indicative of the earliest symptomatology of AD with 10%-15% of MCI patients reportedly progressing to a diagnosis of AD. Individuals with a history of vascular risk factors (VRF's) are considered high risk candidates for developing cognitive impairment in later life. Evidence suggests that vascular injury resulting from untreated VRF's promotes progression from MCI to AD and exacerbates the severity of dementia in AD, and neuroimaging studies have found that the neurodegenerative processes associated with AD are heavily driven by VRF's that promote cerebral hypoperfusion...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28304305/combined-dual-task-gait-training-and%C3%A2-aerobic-exercise-to-improve-cognition-%C3%A2-mobility-and%C3%A2-vascular-health-in%C3%A2-community-dwelling-older-adults-at%C3%A2-risk-for-future-cognitive-decline1
#14
Michael A Gregory, Narlon C Boa Sorte Silva, Dawn P Gill, Cheri L McGowan, Teresa Liu-Ambrose, J Kevin Shoemaker, Vladimir Hachinski, Jeff Holmes, Robert J Petrella
This 6-month experimental case series study investigated the effects of a dual-task gait training and aerobic exercise intervention on cognition, mobility, and cardiovascular health in community-dwelling older adults without dementia. Participants exercised 40 min/day, 3 days/week for 26 weeks on a Biodex GaitTrainer2 treadmill. Participants were assessed at baseline (V0), interim (V1: 12-weeks), intervention endpoint (V2: 26-weeks), and study endpoint (V3: 52-weeks). The study outcomes included: cognition [executive function (EF), processing speed, verbal fluency, and memory]; mobility: usual & dual-task gait (speed, step length, and stride time variability); and vascular health: ambulatory blood pressure, carotid arterial compliance, and intima-media thickness (cIMT)...
March 10, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28303161/a-systematic-review-of-intervention-studies-examining-nutritional-and-herbal-therapies-for-mild-cognitive-impairment-and-dementia-using-neuroimaging-methods-study-characteristics-and-intervention-efficacy
#15
REVIEW
Genevieve Z Steiner, Danielle C Mathersul, Freya MacMillan, David A Camfield, Nerida L Klupp, Sai W Seto, Yong Huang, Mark I Hohenberg, Dennis H Chang
Neuroimaging facilitates the assessment of complementary medicines (CMs) by providing a noninvasive insight into their mechanisms of action in the human brain. This is important for identifying the potential treatment options for target disease cohorts with complex pathophysiologies. The aim of this systematic review was to evaluate study characteristics, intervention efficacy, and the structural and functional neuroimaging methods used in research assessing nutritional and herbal medicines for mild cognitive impairment (MCI) and dementia...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28302914/new-insights-into-mechanisms-of-small-vessel-disease-stroke-from-genetics
#16
REVIEW
Rhea Tan, Matthew Traylor, Loes Rutten-Jacobs, Hugh Markus
Cerebral small vessel disease (SVD) is a common cause of lacunar strokes, vascular cognitive impairment (VCI) and vascular dementia. SVD is thought to result in reduced cerebral blood flow, impaired cerebral autoregulation and increased blood-brain barrier (BBB) permeability. However, the molecular mechanisms underlying SVD are incompletely understood. Recent studies in monogenic forms of SVD, such as cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL), and 'sporadic' SVD have shed light on possible disease mechanisms in SVD...
April 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28302047/neuroinflammation-as-a-common-mechanism-associated-with-the-modifiable-risk-factors-for-alzheimer-s-and-parkinson-s-diseases
#17
Jordan Alexander McKenzie, Lindsay J Spielman, Caitlin B Pointer, Jessica R Lowry, Ekta Bajwa, Carolyn W Lee, Andis Klegeris
Alzheimer's disease (AD) and Parkinson's disease (PD) are among the most common causes of dementia, which increasingly contribute to morbidity and mortality worldwide. A common hallmark in the pathogenesis of these two diseases is neuroinflammation, which is initially triggered by the presence of pathological structures associated with these disorders. Chronic neuroinflammation is sustained by persistent and aberrant microglial activation in the brain, which results in damage and death of neighboring cells, including neurons and glial cells...
March 15, 2017: Current Aging Science
https://www.readbyqxmd.com/read/28299744/a-simple-adaptable-blood-brain-barrier-cell-model-for-screening-matrix-metalloproteinase-inhibitor-functionality
#18
Jennifer S Myers, Joan Hare, Qing-Xiang Amy Sang
The blood-brain barrier is a multicellular and basement membrane unit that regulates molecular transport between the blood and central nervous system. Many cerebral pathologies, such as acute stroke and chronic vascular dementia, result in a disrupted blood-brain barrier, increasing its permeability and allowing the entry of potentially neurotoxic molecules. The activation of matrix metalloproteinases mediates further blood-brain barrier damage. The inhibition of matrix metalloproteinases is a potential strategy for stroke therapy...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28298143/p450-eicosanoids-and-ros-interplay-in-brain-injury-and-neuroprotection
#19
Xuehong Liu, Catherine M Davis, Nabil J Alkayed
<b>Significance</b>. Eicosanoids are endogenous lipid mediators that play important roles in brain function and disease. Acute brain injury such as that occurs in stroke and traumatic brain injury (TBI) increases the formation of eicosanoids, which in return exacerbate or diminish injury. In chronic neurodegenerative diseases such as Alzheimer's disease (AD) and vascular dementia (VD), eicosanoid synthetic and metabolizing enzymes are altered, disrupting the balance between neuroprotective and neurotoxic eicosanoids...
March 16, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28291299/-neurosyphilis-in-psychiatric-settings-three-case-reports
#20
Erhan Akıncı, Fatih Öncü, Barış Topçular
Syphilis is a generally sexually transmitted and multisystem disease caused by the spirochete Treponema pallidum. All of the organs of the body may be involved during the course of the disease. Neurosyphilis is a clinical form of syphilis with the central nervous system (CNS) involvement. While primarily meningeal and vascular structures are involved in early neurosyphilis, a parenchymal affection of the brain and spinal cord emerges at later stages of neurosyphilis. It presents with symptoms of meningitis, meningovasculitis and parenchymal neurosyphilis (presenting as tabes dorsalis and general paresis)...
2017: Türk Psikiyatri Dergisi, Turkish Journal of Psychiatry
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