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https://www.readbyqxmd.com/read/28630235/ultrasound-markers-of-carotid-atherosclerosis-and-cognition-the-northern-manhattan-study
#1
Hannah Gardener, Michelle R Caunca, Chuanhui Dong, Ying Kuen Cheung, Mitchell S V Elkind, Ralph L Sacco, Tatjana Rundek, Clinton B Wright
BACKGROUND AND PURPOSE: Ultrasound markers of carotid atherosclerosis may be related to cognitive status. We hypothesized that individuals with greater carotid intima-media thickness (cIMT) and carotid plaque burden would exhibit worse cognition. METHODS: One thousand one hundred sixty-six stroke-free participants from the NOMAS (Northern Manhattan Study) underwent carotid ultrasound and neuropsychological examination. Among them, 826 underwent a second neuropsychological examination an average of 5 years later...
June 19, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28624131/studying-arterial-stiffness-using-high-frequency-ultrasound-in-mice-with-alzheimer-disease
#2
Chin-Chia Huang, Hsiang-Fan Cheng, Ben-Peng Zhu, Pei-Yu Chen, Suet Theng Beh, Yu-Min Kuo, Chih-Chung Huang
Alzheimer disease (AD) is an irreversible, progressive brain disorder that causes slow loss of memory and thinking skills, normally leading to death in 3-9 y. The etiology of AD is not fully understood but is widely believed to be induced by the production and deposition of amyloid-β peptide in the brain. Recently, a correlation was discovered between amyloid-β deposition and atherosclerosis in the cerebral arteries of postmortem brains, indicating that amyloid-β promotes atherogenesis and that in turn atherosclerosis promotes brain amyloid-β accumulation...
June 14, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28589128/low-density-lipoprotein-receptor-related-protein-1-signaling-in-angiogenesis
#3
REVIEW
Hua Mao, Liang Xie, Xinchun Pi
Low-density lipoprotein receptor-related protein-1 (LRP1) plays multifunctional roles in lipid homeostasis, signaling transduction, and endocytosis. It has been recognized as an endocytic receptor for many ligands and is involved in the signaling pathways of many growth factors or cytokines. Dysregulation of LRP1-dependent signaling events contributes to the development of pathophysiologic processes such as Alzheimer's disease, atherosclerosis, inflammation, and coagulation. Interestingly, recent studies have linked LRP1 with endothelial function and angiogenesis, which has been underappreciated for a long time...
2017: Frontiers in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28571786/biodegradation-of-7-ketocholesterol-by-rhodococcus-erythropolis-mtcc-3951-process-optimization-and-enzymatic-insights
#4
Shubhrima Ghosh, S K Khare
The oxidation of cholesterol results in the formation of oxysterols such as 7-ketocholesterol(7KC), which are implicated in a number of age-related disorders such as atherosclerosis, Alzheimers' disease and macular degeneration. Current modalities use antioxidants and other natural or synthetic molecules to reduce 7KC-induced cytotoxity. The alternative application of enzymes from microbial sources to degrade oxysterols in vitro and in vivo is an innovative approach. The present study aims to assess the potential of the bacteria Rhodococcus erythropolis MTCC 3951 in degrading 7KC and mining relevant enzymes involved...
May 29, 2017: Chemistry and Physics of Lipids
https://www.readbyqxmd.com/read/28570530/preparation-of-plasma-membrane-vesicles-from-bone-marrow-mesenchymal-stem-cells-for-potential-cytoplasm-replacement-therapy
#5
Li-Qun Xu, Mei-Jia Lin, Yun-Pan Li, Shuang Li, Shao-Jun Chen, Chi-Ju Wei
We have previously reported on the generation of plasma membrane vesicles (PMVs) through the mechanical extrusion of mammalian cells. The fusion of PMVs with mitochondrial deficient Rho0 cells restored mitotic activity under normal culture conditions. Atherosclerosis, type 2 diabetes, Alzheimer's disease, and cancer are age-related diseases that have been reported to be associated with multiple mechanical and functional defects in the cytosol and organelles of a variety of cell types. Bone marrow mesenchymal stem cells (BMSCs) represent a unique cell population from the bone marrow that possess self-renewal capabilities while maintaining their multipotency...
May 18, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28559539/in-silico-analyses-of-deleterious-missense-snps-of-human-apolipoprotein-e3
#6
Allan S Pires, William F Porto, Octavio L Franco, Sérgio A Alencar
ApoE3 is the major chylomicron apolipoprotein, binding in a specific liver peripheral cell receptor, allowing transport and normal catabolism of triglyceride-rich lipoprotein constituents. Point mutations in ApoE3 have been associated with Alzheimer's disease, type III hyperlipoproteinemia, atherosclerosis, telomere shortening and impaired cognitive function. Here, we evaluate the impact of missense SNPs in APOE retrieved from dbSNP through 16 computational prediction tools, and further evaluate the structural impact of convergent deleterious changes using 100 ns molecular dynamics simulations...
May 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28546110/hypoxia-driven-glycation-mechanisms-and-therapeutic-opportunities
#7
REVIEW
Mohammad Imran Khan, Suvasmita Rath, Vaqar Mustafa Adhami, Hasan Mukhtar
Tumor masses are deprived of oxygen and characterized by enhanced glucose uptake followed by glycolysis. Elevated glucose levels induce non-enzymatic glycosylation or glycation of proteins which leads to accumulation of advanced glycation end products (AGE). These AGE molecules bind to their respective receptors called the receptor for advanced glycation end products (RAGE) and initiate several aberrant signaling pathways leading to onset of diseases such as diabetes, Alzheimer's, atherosclerosis, heart failure and cancer...
May 22, 2017: Seminars in Cancer Biology
https://www.readbyqxmd.com/read/28545778/current-pharmacological-developments-in-2-3-4-5-tetrahydroxystilbene-2-o-%C3%AE-d-glucoside-tsg
#8
REVIEW
Jingjing Wu, Wenfeng Hu, Yu Gong, Peng Wang, Lijuan Tong, Xiangfan Chen, Zhuo Chen, Xiaole Xu, Wenjuan Yao, Wei Zhang, Chao Huang
2,3,4',5-tetrahydroxystilbene 2-O-β-D-glucoside (TSG), a resveratrol analog with glucoside, is purified from a traditional Chinese herbal medicine polygonum multiflorum. It has been extensively studied in last decade and known to exert strong anti-inflammatory, anti-oxidative, anti-apoptotic, and free radical scavenging activities, and therefore has been listed as a potential agent for disease therapies. Recent studies extend well-beyond effects of TSG on the injury of neurons, cardiomyocytes and endothelial cells, and report important functions of TSG in a lot of pathophysiological conditions...
May 23, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28511572/mtor-drives-cerebral-blood-flow-and-memory-deficits-in-ldlr-mice-modeling-atherosclerosis-and-vascular-cognitive-impairment
#9
Jordan B Jahrling, Ai-Ling Lin, Nicholas DeRosa, Stacy A Hussong, Candice E Van Skike, Milena Girotti, Martin Javors, Qingwei Zhao, Leigh Ann Maslin, Reto Asmis, Veronica Galvan
We recently showed that mTOR attenuation blocks progression and abrogates established cognitive deficits in Alzheimer's disease (AD) mouse models. These outcomes were associated with the restoration of cerebral blood flow (CBF) and brain vascular density (BVD) resulting from relief of mTOR inhibition of NO release. Recent reports suggested a role of mTOR in atherosclerosis. Because mTOR drives aging and vascular dysfunction is a universal feature of aging, we hypothesized that mTOR may contribute to brain vascular and cognitive dysfunction associated with atherosclerosis...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28488732/involvement-of-the-warburg-effect-in-non-tumor-diseases-processes
#10
REVIEW
Zhe Chen, Meiqing Liu, Lanfang Li, Linxi Chen
Warburg effect, as an energy shift from mitochondrial oxidative phosphorylation to aerobic glycolysis, is extensively found in various cancers. Interestingly, increasing researchers show that Warburg effect plays a crucial role in non-tumor diseases. For instance, inhibition of Warburg effect can alleviate pulmonary vascular remodeling in the process of pulmonary hypertension. Interference of Warburg effect improves mitochondrial function and cardiac function in the process of cardiac hypertrophy and heart failure...
May 10, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28488154/impact-of-multiple-pathologies-on-the-threshold-for-clinically-overt-dementia
#11
REVIEW
Alifiya Kapasi, Charles DeCarli, Julie A Schneider
Longitudinal clinical-pathological studies have increasingly recognized the importance of mixed pathologies (the coexistence of one or more neurodegenerative and cerebrovascular disease pathologies) as important factors in the development of Alzheimer's disease (AD) and other forms of dementia. Older persons with AD pathology, often have concomitant cerebrovascular disease pathologies (macroinfarcts, microinfarcts, atherosclerosis, arteriolosclerosis, cerebral amyloid angiopathy) as well as other concomitant neurodegenerative disease pathologies (Lewy bodies, TDP-43, hippocampal sclerosis)...
May 9, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28444734/highly-electronegative-low-density-lipoprotein-l5-evokes-microglial-activation-and-creates-a-neuroinflammatory-stress-via-toll-like-receptor-4-signaling
#12
Liang-En Yu, Chiou-Lian Lai, Ching-Tien Lee, Jiz-Yuh Wang
Atherogenic risk factors, such as hypercholesterolemia, are associated with increased risk of neurodegeneration, especially Alzheimer's dementia. Human plasma electronegative low-density lipoprotein [LDL(-)], especially L5, may serve as an important contributing factor. L5 promoting an inflammatory action in atherosclerosis has been extensively studied. However, the role of L5 in inducing neuroinflammation remains unknown. Here, we examined the impact of L5 on immune activation and cell viability in cultured BV-2 microglia...
April 26, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28399252/association-between-midlife-vascular-risk-factors-and-estimated-brain-amyloid-deposition
#13
MULTICENTER STUDY
Rebecca F Gottesman, Andrea L C Schneider, Yun Zhou, Josef Coresh, Edward Green, Naresh Gupta, David S Knopman, Akiva Mintz, Arman Rahmim, A Richey Sharrett, Lynne E Wagenknecht, Dean F Wong, Thomas H Mosley
Importance: Midlife vascular risk factors have been associated with late-life dementia. Whether these risk factors directly contribute to brain amyloid deposition is less well understood. Objective: To determine if midlife vascular risk factors are associated with late-life brain amyloid deposition, measured using florbetapir positron emission tomography (PET). Design, Setting, and Participants: The Atherosclerosis Risk in Communities (ARIC)-PET Amyloid Imaging Study, a prospective cohort study among 346 participants without dementia in 3 US communities (Washington County, Maryland; Forsyth County, North Carolina; and Jackson, Mississippi) who have been evaluated for vascular risk factors and markers since 1987-1989 with florbetapir PET scans in 2011-2013...
April 11, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28384320/direct-administration-of-2-hydroxypropyl-beta-cyclodextrin-into-guinea-pig-cochleae-effects-on-physiological-and-histological-measurements
#14
J T Lichtenhan, K Hirose, C A Buchman, R K Duncan, A N Salt
2-Hydroxypropyl-Beta-Cyclodextrin (HPβCD) can be used to treat Niemann-Pick type C disease, Alzheimer's disease, and atherosclerosis. But, a consequence is that HPβCD can cause hearing loss. HPβCD was recently found to be toxic to outer hair cells (OHCs) in the organ of Corti. Previous studies on the chronic effects of in vivo HPβCD toxicity did not know the intra-cochlear concentration of HPβCD and attributed variable effects on OHCs to indirect drug delivery to the cochlea. We studied the acute effects of known HPβCD concentrations administered directly into intact guinea pig cochleae...
2017: PloS One
https://www.readbyqxmd.com/read/28374233/neurological-deficits-in-obstructive-sleep-apnea
#15
REVIEW
Luigi Ferini-Strambi, Giulia Elisabetta Lombardi, Sara Marelli, Andrea Galbiati
Obstructive sleep apnea (OSA) is the most common sleep-related breathing disorder characterized by repetitive episodes of complete or partial obstruction of the upper airway. The prevalence of this disorder is strictly dependent on its gravity. At ≥15 events/h apnea-hypopnea index (AHI), it ranges from 6 to 17% in the general population, with higher rates in men and increasing with age. The hypoxia induced by OSA severely affects the structure and function of blood vessels, culminating in mortality and morbidity...
April 2017: Current Treatment Options in Neurology
https://www.readbyqxmd.com/read/28350821/neuropathological-diagnoses-and-clinical-correlates-in-older-adults-in-brazil-a-cross-sectional-study
#16
Claudia K Suemoto, Renata E L Ferretti-Rebustini, Roberta D Rodriguez, Renata E P Leite, Luciana Soterio, Sonia M D Brucki, Raphael R Spera, Tarcila M Cippiciani, Jose M Farfel, Alexandre Chiavegatto Filho, Michel Satya Naslavsky, Mayana Zatz, Carlos A Pasqualucci, Wilson Jacob-Filho, Ricardo Nitrini, Lea T Grinberg
BACKGROUND: Clinicopathological studies are important in determining the brain lesions underlying dementia. Although almost 60% of individuals with dementia live in developing countries, few clinicopathological studies focus on these individuals. We investigated the frequency of neurodegenerative and vascular-related neuropathological lesions in 1,092 Brazilian admixed older adults, their correlation with cognitive and neuropsychiatric symptoms, and the accuracy of dementia subtype diagnosis...
March 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28321471/feasibility-of-in-vivo-18-f-florbetaben-pet-mr-imaging-of-human-carotid-amyloid-%C3%AE
#17
Jan Bucerius, Henryk Barthel, Solveig Tiepolt, Peter Werner, Judith C Sluimer, Joachim E Wildberger, Marianne Patt, Swen Hesse, Hermann-Josef Gertz, Erik A L Biessen, Felix M Mottaghy, Osama Sabri
PURPOSE: Amyloid-beta (Aβ) peptides are involved in the inflammatory pathology of atherosclerosis. (18)F-Florbetaben is a PET tracer for clinical imaging of cerebral Aβ plaques in Alzheimer's disease (AD). We sought to determine whether specific uptake of (18)F-florbetaben in the carotid arteries can be identified using a fully integrated hybrid PET/MRI system and whether this uptake is associated with clinical cardiovascular disease (CVD) risk factors. METHODS: Carotid (18)F-florbetaben uptake was quantified as the mean of the maximum target-to-background ratio (meanTBRmax) in 40 cognitively impaired subjects (age 68...
July 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28228072/curcumin-and-endothelial-function-evidence-and-mechanisms-of-protective-effects
#18
Maryam Saberi Karimian, Matteo Pirro, Thomas P Johnston, Muhammed Majeed, Amirhossein Sahebkar
BACKGROUND: The endothelium is a large paracrine organ regulating cell growth, vascular tone and thrombogenicity as well as platelet and leukocyte interactions. Endothelial function can be assessed by non-invasive techniques [e.g. flow-mediated vasodilation, nitroglycerin-mediated dilation and pulse wave velocity] and measuring specific circulating biomarkers [cell adhesion molecules, endothelial microparticles and endothelial progenitor cells]. Impaired endothelial function plays a key role in the development of atherosclerosis, arterial hypertension, heart failure, ischemia-reperfusion injury, Alzheimer's disease and other conditions...
February 22, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28223234/advanced-glycation-end-products-produced-systemically-and-by-macrophages-a-common-contributor-to-inflammation-and-degenerative-diseases
#19
REVIEW
Kyunghee Byun, YongCheol Yoo, Myeongjoo Son, Jaesuk Lee, Goo-Bo Jeong, Young Mok Park, Ghasem Hosseini Salekdeh, Bonghee Lee
Advanced glycation end products (AGEs) and their receptor have been implicated in the progressions of many intractable diseases, such as diabetes and atherosclerosis, and are also critical for pathologic changes in chronic degenerative diseases, such as Alzheimer's disease, Parkinson's disease, and alcoholic brain damage. Recently activated macrophages were found to be a source of AGEs, and the most abundant form of AGEs, AGE-albumin excreted by macrophages has been implicated in these diseases and to act through common pathways...
February 13, 2017: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28219828/treating-cognitive-impairment-with-transcranial-low-level-laser-therapy
#20
REVIEW
Jack C de la Torre
This report examines the potential of low level laser therapy (LLLT) to alter brain cell function and neurometabolic pathways using red or near infrared (NIR) wavelengths transcranially for the prevention and treatment of cognitive impairment. Although laser therapy on human tissue has been used for a number of medical conditions since the late 1960s, it is only recently that several clinical studies have shown its value in raising neurometabolic energy levels that can improve cerebral hemodynamics and cognitive abilities in humans...
March 2017: Journal of Photochemistry and Photobiology. B, Biology
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