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Alzheimers and inflammation

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https://www.readbyqxmd.com/read/28212619/brain-and-liver-pathology-amyloid-deposition-and-interferon-responses-among-older-hiv-positive-patients-in-the-late-haart-era
#1
Isaac H Solomon, Umberto De Girolami, Sukrutha Chettimada, Vikas Misra, Elyse J Singer, Dana Gabuzda
BACKGROUND: HIV+ patients on highly active antiretroviral therapy (HAART) with suppressed viral loads have a low incidence of HIV-associated dementia, but increased prevalence of milder forms of HIV-associated neurocognitive disorders (HAND). These milder forms of HAND are often associated with minimal histological abnormalities, and their pathophysiology is unclear. Comorbidities, altered amyloid metabolism, accelerated brain aging, and activated interferon responses are suspected to play a role in HAND pathogenesis in HAART-treated persons...
February 17, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28210978/future-directions-in-imaging-neurodegeneration
#2
REVIEW
Joseph C Masdeu
Neuroimaging comprises a powerful set of instruments to diagnose various neurodegenerative disorders, clarifies their neurobiology, and monitors their treatment. Magnetic resonance imaging depicts volume changes, as well as abnormalities in functional and structural connectivity. Positron emission tomography (PET) allows for the quantification of regional cerebral metabolism, characteristically altered in Alzheimer's disease, amyotrophic lateral sclerosis, diffuse Lewy-body disease, and the frontotemporal dementias...
January 2017: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/28210868/cognitive-impairment-and-dementia-a-new-emerging-complication-of-type-2-diabetes-the-diabetologist-s-perspective
#3
Rafael Simó, Andreea Ciudin, Olga Simó-Servat, Cristina Hernández
Type 2 diabetes mellitus (T2D) and Alzheimer's disease (AD) are two of the most common diseases of aging around the world. Given the frequency with which T2D and AD occur, the notion that people with T2D may be at increased risk for AD has large societal consequences, and understanding the mechanistic links between these diseases is imperative for the development of effective AD prevention and treatment strategies. Apart from being an accelerator of AD, T2D is associated with a progressive cognitive decline...
February 16, 2017: Acta Diabetologica
https://www.readbyqxmd.com/read/28210222/icariside-ii-a-broad-spectrum-anti-cancer-agent-reverses-beta-amyloid-induced-cognitive-impairment-through-reducing-inflammation-and-apoptosis-in-rats
#4
Yuanyuan Deng, Long Long, Keke Wang, Jiayin Zhou, Lingrong Zeng, Lianzi He, Qihai Gong
Beta-amyloid (Aβ) deposition, associated neuronal apoptosis and neuroinflammation are considered as the important factors which lead to cognitive deficits in Alzheimer's disease (AD). Icariside II (ICS II), an active flavonoid compound derived from Epimedium brevicornum Maxim, has been extensively used to treat erectile dysfunction, osteoporosis and dementia in traditional Chinese medicine. Recently, ICS II attracts great interest due to its broad-spectrum anti-cancer property. ICS II shows an anti-inflammatory potential both in cancer treatment and cerebral ischemia-reperfusion...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28208151/bacillus-calmette-gu%C3%A3-rin-confers-neuroprotection-in-a-murine-model-of-japanese-encephalitis
#5
Sahil Kulkarni, Sandeepan Mukherjee, Anupama Pandey, Ritwik Dahake, Usha Padmanabhan, Abhay S Chowdhary
OBJECTIVE: Japanese encephalitis (JE) is a debilitating disease caused by infection with the JE virus (JEV; family: Flaviviridae), which leaves neurological sequelae in survivors but more often leads to mortality. Neurodegeneration caused by inflammation is the primary pathology behind the clinical manifestation of encephalitis caused by JEV. Bacillus Calmette-Guérin (BCG) has been used in immunoprophylaxis for tuberculosis and in the adjuvant therapy of many malignancies, and has exhibited neuroprotective activities in experimental models of Parkinson and Alzheimer disease...
February 17, 2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/28199395/a-novel-hypothesis-unbiased-method-for-gene-ontology-enrichment-based-on-transcriptome-data
#6
Mario Fruzangohar, Esmaeil Ebrahimie, David L Adelson
Gene Ontology (GO) classification of statistically significantly differentially expressed genes is commonly used to interpret transcriptomics data as a part of functional genomic analysis. In this approach, all significantly expressed genes contribute equally to the final GO classification regardless of their actual expression levels. Gene expression levels can significantly affect protein production and hence should be reflected in GO term enrichment. Genes with low expression levels can also participate in GO term enrichment through cumulative effects...
2017: PloS One
https://www.readbyqxmd.com/read/28193696/astrocytic-orosomucoid-2-modulates-microglial-activation-and-neuroinflammation
#7
Myungjin Jo, Jong-Heon Kim, Gyunjee Song, Minchul Seo, Eun Mi Hwang, Kyoungho Suk
Orosomucoid (ORM) is an acute-phase protein that belongs to the immunocalin subfamily, a group of small-molecule binding proteins with immunomodulatory functions. Little is known about the role of ORM proteins in the central nervous system. The aim of the present study was to investigate the brain expression of ORM and its role in neuroinflammation. Expression of Orm2, but not Orm1 or Orm3, was highly induced in the mouse brain after systemic injection of lipopolysaccharide (LPS). Plasma levels of ORM2 were also significantly higher in patients with cognitive impairment than in normal subjects...
February 13, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28185874/psychosocial-stress-on-neuroinflammation-and-cognitive-dysfunctions-in-alzheimer-s-disease-the-emerging-role-for-microglia
#8
REVIEW
Sami Piirainen, Andrew Youssef, Cai Song, Allan V Kalueff, Gary E Landreth, Tarja Malm, Li Tian
Chronic psychosocial stress is increasingly recognized as a risk factor for late-onset Alzheimer's disease (LOAD) and associated cognitive deficits. Chronic stress also primes microglia and induces inflammatory responses in the adult brain, thereby compromising synapse-supportive roles of microglia and deteriorating cognitive functions during aging. Substantial evidence demonstrates that failure of microglia to clear abnormally accumulating amyloid-beta (Aβ) peptide contributes to neuroinflammation and neurodegeneration in AD...
February 6, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28183245/ykl-40-as-a-potential-biomarker-and-a-possible-target-in-therapeutic-strategies-of-alzheimer-s-disease
#9
Paweł Muszyński, Magdalena Groblewska, Agnieszka Kulczyńska-Przybik, Alina Kułakowska, Barbara Mroczko
BACKGROUND: Growing body of evidence suggests that pathogenesis of Alzheimer's disease (AD), a progressing neurodegenerative condition, is not limited to the neuronal compartment, but also involves various immunological mechanisms. Insoluble Aβ aggregates in the brain can induce the activation of microglia, resulting in synthesis of proinflammatory mediators, which further can stimulate astrocytic expression of YKL-40. Therefore, the aim of the current review is to present up-to-date data about the role of YKL-40 as a biomarker of AD as well as the possibility of therapeutic strategies targeting neuroinflammation...
February 8, 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/28174611/pterostilbene-ameliorates-intracerebroventricular-streptozotocin-induced-memory-decline-in-rats
#10
Bhagyashree Naik, Abhijit Nirwane, Anuradha Majumdar
There is strong evidence that mitochondrial dysfunction mediated oxidative stress results in aging and energy metabolism deficits thus playing a prime role in pathogenesis of Alzheimer's disease, neuronal death and cognitive dysfunction. Evidences accrued in empirical studies suggest the antioxidant, anticancer and anti-inflammatory activities of the phytochemical pterostilbene (PTS). PTS also exhibits favourable pharmacokinetic attributes compared to other stilbenes. Hence, in the present study, we explored the neuroprotective role of PTS in ameliorating the intracerebroventricular administered streptozotocin (STZ) induced memory decline in rats...
February 2017: Cognitive Neurodynamics
https://www.readbyqxmd.com/read/28168427/rage-tlr-crosstalk-sustains-chronic-inflammation-in-neurodegeneration
#11
REVIEW
Kazimierz Gąsiorowski, Barbara Brokos, Valentina Echeverria, George E Barreto, Jerzy Leszek
Chronic inflammatory reactions are consistenly present in neurodegeneration of Alzheimer type and are considered important factors that accelerate progression of the disease. Receptors of innate immunity participate in triggering and driving inflammatory reactions. For example, Toll-like receptors (TLRs) and receptor for advanced glycation end product (RAGE), major receptors of innate immunity, play a central role in perpetuation of inflammation. RAGE activation should be perceived as a primary mechanism which determines self-perpetuated chronic inflammation, and RAGE cooperation with TLRs amplifies inflammatory signaling...
February 6, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28167212/recruitment-of-rna-molecules-by-connexin-rna-binding-motifs-implication-in-rna-and-dna-transport-through-microvesicles-and-exosomes
#12
REVIEW
Marta Varela-Eirin, Adrian Varela-Vazquez, Marina Rodríguez-Candela Mateos, Anton Vila-Sanjurjo, Eduardo Fonseca, José L Mascareñas, M Eugenio Vázquez, Maria D Mayan
Connexins (Cxs) are integral membrane proteins that form high-conductance plasma membrane channels, allowing communication from cell to cell (via gap junctions) and from cells to the extracellular environment (via hemichannels). Initially described for their role in joining excitable cells (nerve and muscle), gap junctions (GJs) are found between virtually all cells in solid tissues and are essential for functional coordination by enabling the direct transfer of small signalling molecules, metabolites, ions, and electrical signals from cell to cell...
February 4, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28161476/markers-of-neuroinflammation-associated-with-alzheimer-s-disease-pathology-in-older-adults
#13
Julius Popp, Aikaterini Oikonomidi, Domilė Tautvydaitė, Loïc Dayon, Michael Bacher, Eugenia Migliavacca, Hugues Henry, Richard Kirkland, India Severin, Jérôme Wojcik, Gene L Bowman
BACKGROUND: In vitro and animal studies have linked neuroinflammation to Alzheimer's disease (AD) pathology. Studies on markers of inflammation in subjects with mild cognitive impairment or AD dementia provided inconsistent results. We hypothesized that distinct blood and cerebrospinal fluid (CSF) inflammatory markers are associated with biomarkers of amyloid and tau pathology in older adults without cognitive impairment or with beginning cognitive decline. OBJECTIVE: To identify blood-based and CSF neuroinflammation marker signatures associated with AD pathology (i...
February 1, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28159467/c-reactive-protein-predicts-incidence-of-dementia-in-an-elderly-asian-community-cohort
#14
Pai-Feng Hsu, Wen-Harn Pan, Bak-Sau Yip, Rosalind Chia-Yu Chen, Hao-Min Cheng, Shao-Yuan Chuang
BACKGROUND: Many studies have investigated the association between markers for peripheral inflammation and risk of dementia, but the results have been conflicting. We aimed to evaluate the association between a specific inflammation marker, C-reactive protein (CRP), and dementia in an elderly Asian community cohort. METHODS: The cohort included 1436 individuals (ages 65 and older) from a national representative sample in Taiwan. Dementia incidence was identified using International Classification of Diseases, Ninth Revision codes for vascular dementia, Alzheimer disease, and nonvascular dementia...
January 31, 2017: Journal of the American Medical Directors Association
https://www.readbyqxmd.com/read/28154566/histological-architecture-underlying-brain-immune-cell-cell-interactions-and-the-cerebral-response-to-systemic-inflammation
#15
Atsuyoshi Shimada, Sanae Hasegawa-Ishii
Although the brain is now known to actively interact with the immune system under non-inflammatory conditions, the site of cell-cell interactions between brain parenchymal cells and immune cells has been an open question until recently. Studies by our and other groups have indicated that brain structures such as the leptomeninges, choroid plexus stroma and epithelium, attachments of choroid plexus, vascular endothelial cells, cells of the perivascular space, circumventricular organs, and astrocytic endfeet construct the histological architecture that provides a location for intercellular interactions between bone marrow-derived myeloid lineage cells and brain parenchymal cells under non-inflammatory conditions...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28153452/adenosine-receptors-modulators-of-lipid-availability-that-are-controlled-by-lipid-levels
#16
REVIEW
Andrea Leiva, Enrique Guzmán-Gutiérrez, Susana Contreras-Duarte, Bárbara Fuenzalida, Claudette Cantin, Lorena Carvajal, Rocío Salsoso, Jaime Gutiérrez, Fabián Pardo, Luis Sobrevia
Adenosine as well as agonists and antagonists for the four adenosine receptor subtypes (A1R, A2AR, A2BR and A3R) play a role in several key physiological and pathophysiological processes, including the regulation of vascular tone, thrombosis, immune response, inflammation, and angiogenesis. This review focuses on the adenosine-mediated regulation of lipid availability in the cell and in the systemic circulation as well in humans and animal models. Therefore, adenosine, mainly by acting on A1R, inhibits lipolysis activity, leading to reduction of the circulating fatty acid levels...
January 30, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28152479/inhibitor-of-phosphodiestearse-4-improves-memory-deficits-oxidative-stress-neuroinflammation-and-neuropathological-alterations-in-mouse-models-of-dementia-of-alzheimer-s-type
#17
Amit Kumar, Nirmal Singh
The study investigates the potential of Rolipram a phosphodiesterase-4 inhibitor in cognitive deficits induced by streptozotocin (STZ, 3mg/kg intracerebroventricularly) and natural ageing in mice. Morris water maze (MWM) test was employed to evaluate learning and memory of the animals. Extent of oxidative stress was measured by estimating the levels of brain glutathione (GSH) and thiobarbituric acid reactive species (TBARS). Brain acetylcholinestrase (AChE) activity was also estimated. The brain activity of myeloperoxidase (MPO) was measured as a marker of inflammation...
January 30, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28143625/potential-benefits-of-phytochemicals-against-alzheimer-s-disease
#18
Emma L Wightman
Our current therapeutic drugs for Alzheimer's disease are predominantly derived from the alkaloid class of plant phytochemicals. These drugs, such as galantamine and rivastigmine, attenuate the decline in the cholinergic system but, as the alkaloids occupy the most dangerous end of the phytochemical spectrum (indeed they function as feeding deterrents and poisons to other organisms within the plant itself), they are often associated with unpleasant side effects. In addition, these cholinesterase inhibiting alkaloids target only one system in a disorder, which is typified by multifactorial deficits...
February 1, 2017: Proceedings of the Nutrition Society
https://www.readbyqxmd.com/read/28143556/aging-and-amyloid-%C3%AE-oligomers-enhance-tlr4-expression-lps-induced-ca-2-responses-and-neuron-cell-death-in-cultured-rat-hippocampal-neurons
#19
María Calvo-Rodríguez, Carmen de la Fuente, Mónica García-Durillo, Carmen García-Rodríguez, Carlos Villalobos, Lucía Núñez
BACKGROUND: Toll-like receptors (TLRs) are transmembrane pattern-recognition receptors of the innate immune system recognizing diverse pathogen-derived and tissue damage-related ligands. It has been suggested that TLR signaling contributes to the pathogenesis of age-related, neurodegenerative diseases, including Alzheimer's disease (AD). AD is associated to oligomers of the amyloid β peptide (Aβo) that cause intracellular Ca(2+) dishomeostasis and neuron cell death in rat hippocampal neurons...
January 31, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28137242/exploring-1-3-4-oxadiazole-scaffold-for-anti-inflammatory-and-analgesic-activities-a-review-of-literature-from-2005-2016
#20
G Chawla, B Naaz, A A Siddiqui
Inflammation is the condition associated with many life-threatening diseases like cancer, cardiovascular diseases, Alzheimer's disease etc. Non-steroidal anti-inflammatory drugs (NSAIDs) are widely used to reduce inflammation. One common problem associated with them is the gastric side effects which restrict their frequent use. The researchers have been involved in developing newer NSAIDs with the effort to reduce their adverse effects. Among the various heterocyclic moieties, the 1,3,4-oxadiazole moiety is found to have a wide range of pharmacological activities and attracting the researchers to work on this nucleus...
January 27, 2017: Mini Reviews in Medicinal Chemistry
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