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Alzheimers and inflammation

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https://www.readbyqxmd.com/read/28087694/iso-%C3%AE-acids-bitter-components-of-beer-prevent-inflammation-and-cognitive-decline-induced-in-a-mouse-model-of-alzheimer-s-disease
#1
Yasuhisa Ano, Atsushi Dhata, Yoshimasa Taniguchi, Ayaka Hoshi, Kazuyuki Uchida, Akihiko Takashima, Hiroyuki Nakayama
Alongside the rapid growth in aging populations worldwide, prevention and therapy for age-related memory decline and dementia are in great demand to maintain a long healthy life. Here we found that iso-α-acids, hop-derived bitter compounds in beer, enhance microglial phagocytosis and suppress inflammation via activation of the peroxisome proliferator-activated receptor (PPAR-γ). In normal mice, oral administration of iso-α-acids led to a significant increase both in CD11b and CD206 double-positive anti-inflammatory type microglia (P<0...
January 13, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28087373/chronoinflammaging-in-alzheimer-a-systematic-review-on-the-roles-of-toll-like-receptor-2
#2
REVIEW
Ali Ravari, Tayebeh Mirzaei, Derek Kennedy, Mohammad Kazemi Arababadi
Aging is associated with a range of chronic low-grade inflammation (Chronoinflammaging) which may play a significant role in some chronic inflammatory based diseases, such as Alzheimer disease (AD). However, the events which lead to the induction of chronoinflammaging in AD are yet to be clarified. It has been proposed that the recognition of endogenous ligands by pathogen recognition receptors (PRRs) may be involved in the induction of chronoinflammaging. Toll like receptors (TLRs) are a family of PRRs which recognize endogenous damage associated molecular patterns (DAMPs) and subsequently induce inflammation...
January 10, 2017: Life Sciences
https://www.readbyqxmd.com/read/28086917/resveratrol-regulates-neuro-inflammation-and-induces-adaptive-immunity-in-alzheimer-s-disease
#3
Charbel Moussa, Michaeline Hebron, Xu Huang, Jaeil Ahn, Robert A Rissman, Paul S Aisen, R Scott Turner
BACKGROUND: Treatment of mild-moderate Alzheimer's disease (AD) subjects (N = 119) for 52 weeks with the SIRT1 activator resveratrol (up to 1 g by mouth twice daily) attenuates progressive declines in CSF Aβ40 levels and activities of daily living (ADL) scores. METHODS: For this retrospective study, we examined banked CSF and plasma samples from a subset of AD subjects with CSF Aβ42 <600 ng/ml (biomarker-confirmed AD) at baseline (N = 19 resveratrol-treated and N = 19 placebo-treated)...
January 3, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28077357/triglyceride-rich-lipoprotein-lipolysis-products-increase-blood-brain-barrier-transfer-coefficient-and-induce-astrocyte-lipid-droplets-and-cell-stress
#4
Linda L Lee, Hnin Hnin Aung, Dennis W Wilson, Steven E Anderson, John C Rutledge, Jennifer M Rutkowsky
Elevation of blood triglycerides, primarily as triglyceride-rich lipoproteins (TGRL), has been linked to cerebrovascular inflammation, vascular dementia, and Alzheimer's disease (AD). Brain microvascular endothelial cells and astrocytes, two cell components of the neurovascular unit, participate in controlling blood-brain barrier (BBB) permeability and regulating neurovascular unit homeostasis. Our studies showed that infusion of high physiological concentrations of TGRL lipolysis products (TGRL + lipoprotein lipase) activate and injure brain endothelial cells and transiently increases the BBB transfer coefficient (Ki=permeability x surface area/volume) in vivo...
January 11, 2017: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/28072821/maysin-and-its-flavonoid-derivative-from-centipedegrass-attenuates-amyloid-plaques-by-inducting-humoral-immune-response-with-th2-skewed-cytokine-response-in-the-tg-appswe-ps1de9-alzheimer-s-mouse-model
#5
Yuno Song, Hong-Duck Kim, Min-Kwon Lee, Il-Hwa Hong, Chung-Kil Won, Hyoung-Woo Bai, Seung Sik Lee, SungBeom Lee, Byung Yeoup Chung, Jae-Hyeon Cho
Alzheimer's disease (AD) is a slow, progressive neurodegenerative disease and the most common type of dementia in the elderly. The etiology of AD and its underlying mechanism are still not clear. In a previous study, we found that an ethyl acetate extract of Centipedegrass (CG) (i.e., EA-CG) contained 4 types of Maysin derivatives, including Luteolin, Isoorientin, Rhamnosylisoorientin, and Derhamnosylmaysin, and showed protective effects against Amyloid beta (Aβ) by inhibiting oligomeric Aβ in cellular and in vitro models...
2017: PloS One
https://www.readbyqxmd.com/read/28069809/the-receptor-interacting-serine-threonine-protein-kinase-1-ripk1-regulates-progranulin-levels
#6
Amanda R Mason, Lisa P Elia, Steven Finkbeiner
Progranulin (PGRN), a secreted growth factor, is a key regulator of inflammation and is genetically linked to two common and devastating neurodegenerative diseases. Haploinsufficiency mutations in GRN, the gene encoding PGRN, cause frontotemporal dementia (FTD) and a GRN SNP confers significantly increased risk for Alzheimer's disease (AD). Because cellular and animal data indicate that increasing PGRN can reverse phenotypes of both FTD and AD, modulating PGRN level has been proposed as a therapeutic strategy for both diseases...
January 9, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28064175/neuroimaging-of-inflammation-in-memory-and-related-other-disorders-nimrod-study-protocol-a-deep-phenotyping-cohort-study-of-the-role-of-brain-inflammation-in-dementia-depression-and-other-neurological-illnesses
#7
W Richard Bevan-Jones, Ajenthan Surendranathan, Luca Passamonti, Patricia Vázquez Rodríguez, Robert Arnold, Elijah Mak, Li Su, Jonathan P Coles, Tim D Fryer, Young T Hong, Guy Williams, Franklin Aigbirhio, James B Rowe, John T O'Brien
INTRODUCTION: Inflammation of the central nervous system is increasingly regarded as having a role in cognitive disorders such as dementia and depression, but it is not clear how such inflammation relates to other aspects of neuropathology, structural and functional changes in the brain and symptoms (as assessed via clinical and neuropsychological assessment and MRI). This study will explore these pathophysiological mechanisms using positron emission tomography (PET) which allows in vivo imaging of inflammation, amyloid and τ deposition, together with neuropsychological profiling, MRI and peripheral biomarker analysis...
January 7, 2017: BMJ Open
https://www.readbyqxmd.com/read/28060896/isobavachalcone-attenuates-mptp-induced-parkinson-s-disease-in-mice-by-inhibition-of-microglial-activation-through-nf-%C3%AE%C2%BAb-pathway
#8
Haoran Jing, Shaoxia Wang, Min Wang, Wenliang Fu, Chao Zhang, Donggang Xu
Parkinson's disease (PD) is a complex multi-system and age-related neurodegenerative disorder. The intervention targeting neuroinflammation in PD patients is one effective strategy to slow down or inhibit disease progression. Microglia-mediated inflammatory response plays an important role in Parkinson's, Alzheimer's and other cerebral diseases. Isobavachalcone is a main component of Chinese herb medicine Psoralea corylifolia, which function includes immunoregulation, anti-oxidation and the regulation of β-amyloid (Aβ42) deposited in hippocampus in Alzheimer's patients...
2017: PloS One
https://www.readbyqxmd.com/read/28060355/longitudinal-in-vivo-imaging-of-the-cerebrovasculature-relevance-to-cns-diseases
#9
Margarita Arango-Lievano, Patrizia Giannoni, Sylvie Claeysen, Nicola Marchi, Freddy Jeanneteau
Remodeling of the brain vasculature is a common trait of brain pathologies. In vivo imaging techniques are fundamental to detect cerebrovascular plasticity or damage occurring overtime and in relation to neuronal activity or blood flow. In vivo two-photon microscopy allows the study of the structural and functional plasticity of large cellular units in the living brain. In particular, the thinned-skull window preparation allows the visualization of cortical regions of interest (ROI) without inducing significant brain inflammation...
December 6, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28054310/modulation-of-neuroinflammation-in-the-central-nervous-system-role-of-chemokines-and-sphingolipids
#10
REVIEW
Roberta Gualtierotti, Laura Guarnaccia, Matteo Beretta, Stefania E Navone, Rolando Campanella, Laura Riboni, Paolo Rampini, Giovanni Marfia
Neuroinflammation is a process involved in the pathogenesis of different disorders, both autoimmune, such as neuropsychiatric systemic lupus erythematosus, and degenerative, such as Alzheimer's and Parkinson's disease. In the central nervous system, the local milieu is tightly regulated by different mediators, among which are chemoattractant cytokines, also known as chemokines. These small molecules are able to modulate trafficking of immune cells in the course of nervous system development or in response to tissue damage, and different patterns of chemokine molecule and receptor expression have been described in several neuroinflammatory disorders...
January 4, 2017: Advances in Therapy
https://www.readbyqxmd.com/read/28053038/large-soluble-oligomers-of-amyloid-%C3%AE-protein-from-alzheimer-brain-are-far-less-neuroactive-than-the-smaller-oligomers-to-which-they-dissociate
#11
Ting Yang, Shaomin Li, Huixin Xu, Dominic M Walsh, Dennis J Selkoe
: Soluble oligomers of amyloid β-protein (oAβ) isolated from the brains of Alzheimer's disease (AD) patients have been shown experimentally (in the absence of amyloid plaques) to impair hippocampal synaptic plasticity, decrease synapses, induce tau hyperphosphorylation and neuritic dystrophy, activate microglial inflammation, and impair memory in normal adult rodents. Nevertheless, there has been controversy about what types of oligomers actually confer these AD-like phenotypes. Here, we show that the vast majority of soluble Aβ species obtained from brains of humans who died with confirmed AD elute at high molecular weight (HMW) on nondenaturing size-exclusion chromatography...
January 4, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28049401/alzheimer-s-disease-and-natural-products-future-regimens-emerging-from-nature
#12
Md Asiful Islam, Shahad Saif Khandker, Fahmida Alam, Md Ibrahim Khalil, Mohammad Amjad Kamal, Siew Hua Gan
Alzheimer's disease (AD), which largely affects the elderly, has become a global burden. Patients with AD have both short- and long-term memory impairments. The neuronal loss in AD occurs due to abnormally folded amyloid beta proteins and aggregation of hyperphosphorylated tau proteins in the brain. Eventually, amyloid plaques and neurofibrillary tangles are formed, which subsequently disintegrate the neuronal transport system. There are several factors which are involved in AD pathogenesis, including oxidative stress, inflammation and the presence of metal ions...
January 3, 2017: Current Topics in Medicinal Chemistry
https://www.readbyqxmd.com/read/28049155/intraneuronal-protein-aggregation-as-a-trigger-for-inflammation-and-neurodegeneration-in-the-aging-brain
#13
REVIEW
Antonio Currais, Wolfgang Fischer, Pamela Maher, David Schubert
Age is, by far, the greatest risk factor for Alzheimer's disease (AD), yet few AD drug candidates have been generated that target pathways specifically associated with the aging process itself. Two ubiquitous features of the aging brain are the intracellular accumulation of aggregated proteins and inflammation. As intraneuronal amyloid protein is detected before markers of inflammation, we argue that old, age-associated, aggregated proteins in neurons can induce inflammation, resulting in multiple forms of brain toxicities...
January 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28044308/expression-of-monomeric-c-reactive-protein-in-infarcted-brain-tissue-from-patients-with-alzheimer-s-disease
#14
Mark Slevin, Donghui Liu, Glenn Ferris, Malik Al-Hsinawi, Raid Al-Baradie, Jerzy Krupinski
OBJECTIVE: We have previously shown that monomeric-C-reactive protein is deposited in significant quantities within the brain parenchyma after stroke. Since we have recently identified a possible role of this protein in supporting neurodegeneration and aberrant vascular development we identified a small group of post-mortem brain samples from individuals who had Alzheimer's disease and evidence of tissue infarction/ micro-infarction on histological examination. MATERIAL AND METHOD: We used immunohistochemistry staining to identify the monomeric-C-reactive protein expressed in the infarcted brain tissues...
2017: Türk Patoloji Dergisi
https://www.readbyqxmd.com/read/28032988/neuroprotective-effect-of-slm-a-novel-carbazole-based-fluorophore-on-sh-sy5y-cell-model-and-3xtg-ad-mouse-model-of-alzheimer-s-disease
#15
Xiaoli Wu, Jayasankar Kosaraju, Wei Zhou, Kin Yip Tam
Amyloid β (Aβ) peptide aggregating to form a neurotoxic plaque, leading to cognitive deficits, is believed to be one of the plausible mechanisms for Alzheimer's disease (AD). Inhibiting Aβ aggregation is supposed to offer a neuroprotective effect to ameliorate AD. A previous report has shown that SLM, a carbazole-based fluorophore, binds to Aβ to inhibit the aggregation. However, it is not entirely clear whether the inhibition of Aβ aggregation alone would lead to the anticipated neuroprotective effects...
December 29, 2016: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28026009/transcriptomic-profiling-of-platelet-senescence-and-platelet-extracellular-vesicles
#16
Annika Pienimaeki-Roemer, Tatiana Konovalova, Melina M Musri, Alexander Sigruener, Alfred Boettcher, Gunter Meister, Gerd Schmitz
BACKGROUND: Platelets (PLTs) are derived from megakaryocytes during PLT shedding. Senescent or activated PLTs are expanded in vascular and neurological diseases and release PLT extracellular vesicles (PL-EVs). A systematic analysis of regular messenger RNA (mRNA) and small RNA composition in PLTs and PL-EVs during in vitro PLT senescence has not yet been published. STUDY DESIGN AND METHODS: We isolated PLTs, total PL-EVs, and PL-EV subsets on Days 0 and 5 from human stored donor platelet concentrates...
December 27, 2016: Transfusion
https://www.readbyqxmd.com/read/28011944/bioavailability-of-aspirin-in-rats-comparing-the-drug-s-uptake-into-gastrointestinal-tissue-and-vascular-and-lymphatic-systems-implications-on-aspirin-s-chemopreventive-action
#17
L M Lichtenberger, T Phan, D Fang, S Edler, J Philip, T Li-Geng, E J Dial
Aspirin is an effective analgesic and antiplatelet drug that in addition to its ability to reduce pain, inflammation and fever, appears to have efficacy in the prevention/treatment of a range of diseases including heart disease, numerous cancers and Alzheimer's. It is important to understand the bioavailability of aspirin and its major metabolite, salicylic acid, since dosage and route of administration can vary for treating differing diseases, and the major side-effects of aspirin, upper gastrointestinal ulceration and bleeding, are dose-dependent...
October 2016: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/28009077/inflammasomes-as-therapeutic-targets-for-alzheimer-s-disease
#18
Claire S White, Catherine B Lawrence, David Brough, Jack Rivers-Auty
Alzheimer's disease is the most common form of progressive dementia, typified initially by short term memory deficits which develop into a dramatic global cognitive decline. The classical hall marks of Alzheimer's disease include the accumulation of amyloid oligomers and fibrils, and the intracellular formation of neurofibrillary tangles of hyperphosphorylated tau. It is now clear that inflammation also plays a central role in the pathogenesis of the disease through a number of neurotoxic mechanisms. Microglia are the key immune regulators of the CNS which detect amyloidopathy through cell surface and cytosolic pattern recognition receptors (PRRs) and respond by initiating inflammation through the secretion of cytokines such as interleukin-1β (IL-1β)...
December 23, 2016: Brain Pathology
https://www.readbyqxmd.com/read/28008813/evaluation-of-anticholinesterase-and-inflammation-inhibitory-activity-of-medicinal-mushroom-phellinus-pini-basidiomycetes-fruiting-bodies
#19
Kyung Hoan Im, Trung Kien Nguyen, Jae Kwang Kim, Jae-Hyuk Choi, Tae Soo Lee
Phellinus pini, a medicinal mushroom, has been used as folk medicine in Asian countries for treating ailments such as cancer and gastrointestinal diseases. In this study we evaluated in vitro the antidementia and anti-inflammatory activities of Ph. Pini fruiting bodies. Eleven phenol compounds were detected by high-performance liquid chromatography analysis. Acetylcholinesterase and butyrylcholinesterase inhibitory effects of a methanol extract and a hot water extract were moderate and comparable with those of galanthamine, the standard drug used to treat the early stages of Alzheimer's disease...
2016: International Journal of Medicinal Mushrooms
https://www.readbyqxmd.com/read/28004401/hypoxia-inducible-factors-as-neuroprotective-agent-in-alzheimer-s-disease
#20
REVIEW
Ben Sundra Ashok, Thekkuttuparambil Ananthanarayanan Ajith, Senthilkumar Sivanesan
Beta amyloid (Aβ)-42 peptide and phosphorylated tau protein had been demonstrated as the pathological hallmarks of Alzheimer's disease (AD). A gradual decline of oxygen and glucose supply to the brain during aging or hypoxia was manifested as contributing factors to hypometabolism. The brain regions susceptible to hypometabolism are hippocampus, entorhinal cortex and cognition-associated neocortical regions like parietal, temporal and frontal cortex. In AD patients, the brain regions with hypometabolism can trigger overexpression of amyloid precursor protein and decreased the clearance of Aβ...
December 22, 2016: Clinical and Experimental Pharmacology & Physiology
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