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https://www.readbyqxmd.com/read/28231054/alzheimer-s-disease-as-an-inflammatory-disease
#1
Marta Bolós, Juan Ramón Perea, Jesús Avila
Alzheimer's disease (AD) is a neurodegenerative condition characterized by the formation of amyloid-β plaques, aggregated and hyperphosphorylated tau protein, activated microglia and neuronal cell death, ultimately leading to progressive dementia. In this short review, we focus on neuroinflammation in AD. Specifically, we describe the participation of microglia, as well as other factors that may contribute to inflammation, in neurodegeneration.
February 23, 2017: Biomolecular Concepts
https://www.readbyqxmd.com/read/28229898/histomorphometric-characterization-of-subgemmal-neurogenous-plaques
#2
Ana Carolina Amorim Pellicioli, Felipe Paiva Fonseca, Rodrigo Neves Silva, Luiz Alcino Monteiro Gueiros, Oslei Paes de Almeida, Pablo Agustin Vargas, Marcio Ajudarte Lopes, Helder Antonio Rebelo Pontes, Manoela Domingues Martins, Vinícius Coelho Carrard, Alan Roger Santos-Silva
OBJECTIVES: The aim of this study was to characterize the histomorphometric features of subgemmal neurogenous plaques (SNPs) to better understand their relationship to surrounding microanatomy included in the tissue biopsy samples of the tongue. STUDY DESIGN: A 12-year retrospective study on the files of 3 oral pathology centers yielded 28 SNPs. Hematoxylin and eosin-stained sections were used for histologic analysis, and immunohistochemical staining for S100 protein was performed to better characterize the neural structures...
January 9, 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28227119/clinical-viability-of-carotid-plaque-strain-estimation-using-b-mode-ultrasound-image-sequences
#3
Amir A Khan, Joseph C Hecker, Brajesh K Lal, Siddhartha Sikdar, Amir A Khan, Joseph C Hecker, Brajesh K Lal, Siddhartha Sikdar, Siddhartha Sikdar, Brajesh K Lal, Amir A Khan, Joseph C Hecker
It is estimated that approximately 30% of ischemic strokes are caused by rupture of plaque in the carotid artery. Development of techniques focusing on identifying plaques that are vulnerable to rupture is thus indispensable for stroke prevention. Recent studies have demonstrated that motion analysis of plaques from B-mode and RF ultrasound (US) image sequences can be used to estimate plaque strain. However, viability of these methods in a clinical setting, with variable acquisition protocols, has not been demonstrated yet...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28225955/the-role-of-intradermal-proliferation-of-t-cells-in-the-pathogenesis-of-psoriasis
#4
Vladislav R Khairutdinov, Anastasiya F Mikhailichenko, Irena E Belousova, Ekatherina Sh Kuligina, Alexey V Samtsov, Evgeny N Imyanitov
BACKGROUND: Psoriasis is a common immune-mediated chronic inflammatory disease of the skin and joints, affecting 1-3% of the population. It is generally accepted that the pathogenesis of psoriasis involves accumulation of effector T-cells within lymph nodes and their subsequent migration into the skin through the blood system. Here we provide evidence that psoriatic plaque itself may serve as a source of inflammatory T-cells. OBJECTIVE: We examined the intradermal proliferation of T-cells and the number of effector/memory (CD45RO+) T-cells in the skin of psoriatic patients at different periods of the disease...
January 2017: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28223221/the-atheroma-plaque-secretome-stimulates-the-mobilization-of-endothelial-progenitor-cells-ex-vivo
#5
Francisco M Vega, Violette Gautier, Cecilia M Fernandez-Ponce, Mª Jesús Extremera, A F Maarten Altelaar, Jaime Millan, Juan C Tellez, Jose A Hernandez-Campos, Rosario Conejero, Jorge Bolivar, Ricardo Pardal, Francisco J Garcia-Cózar, Enrique Aguado, Albert J R Heck, Mª Carmen Duran-Ruiz
Endothelial progenitor cells (EPCs) constitute a promising alternative in cardiovascular regenerative medicine due to their assigned role in angiogenesis and vascular repair. In response to injury, EPCs promote vascular remodeling by replacement of damaged endothelial cells and/or by secreting angiogenic factors over the damaged tissue. Nevertheless, such mechanisms need to be further characterized. In the current approach we have evaluated the initial response of early EPCs (eEPCs) from healthy individuals after direct contact with the factors released by carotid arteries complicated with atherosclerotic plaques (AP), in order to understand the mechanisms underlying the neovascularization and remodeling properties assigned to these cells...
February 18, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28216518/optimization-of-t1-weighted-imaging-parameters-in-mr-carotid-plaque-imaging-influence-for-the-quantitative-evaluation-among-different-mri-scanner-types
#6
Takanori Naka, Mitsuyuki Takahashi, Koutarou Takeda, Tarou Igarashi, Tetsukazu Hondera
Carotid artery plaques with high-signal intensity on T1 weighted image (T1 WI) are known to cause cerebral ischemic disease. Signal intensity ratio (SIR), which is calculated from T1 WI in the quantitative evaluation of plaque characterization have been used. However, the various sequences in T1 WI and difference in the sequences were utilized among institutions. Therefore, difference in sequence may influence SIR. The purpose of this study was to evaluate the optimization of T1 WI sequence in MR carotid plaque imaging...
2017: Nihon Hoshasen Gijutsu Gakkai Zasshi
https://www.readbyqxmd.com/read/28212521/angiogenesis-in-the-atherosclerotic-plaque
#7
REVIEW
Caroline Camaré, Mélanie Pucelle, Anne Nègre-Salvayre, Robert Salvayre
Atherosclerosis is a multifocal alteration of the vascular wall of medium and large arteries characterized by a local accumulation of cholesterol and non-resolving inflammation. Atherothrombotic complications are the leading cause of disability and mortality in western countries. Neovascularization in atherosclerotic lesions plays a major role in plaque growth and instability. The angiogenic process is mediated by classical angiogenic factors and by additional factors specific to atherosclerotic angiogenesis...
February 1, 2017: Redox Biology
https://www.readbyqxmd.com/read/28211008/injected-amyloid-beta-in-the-olfactory-bulb-transfers-to-other-brain-regions-via-neural-connections-in-mice
#8
Baixuan He, Minying Zheng, Qiang Liu, Zhe Shi, Simei Long, Xilin Lu, Zhong Pei, Ti-Fei Yuan, Huanxing Su, Xiaoli Yao
Alzheimer's disease (AD) is characterized by progressive neuronal degeneration and pathological accumulation of amyloid plaques in the brain. It has been proposed that the prion-like spreading of amyloid beta (Aβ) protein could contribute to the progression of the disease. Olfactory bulb (OB) is one of the earliest brain regions affected in AD and olfaction is easily impaired prior to cognitive symptoms. However, it remains unclear whether Aβ accumulation in the OB would spread along olfactory projections to other connected brain regions and trigger further neurodegeneration...
February 16, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28208986/atypical-pityriasis-rosea-with-unilateral-presentation
#9
Hoda Badakhsh, Fahameh Fadaei, Mahin Badakhsh, Abbas Balouchi
Pityriasis Rosea (PR) is a common skin disease and characterized by generalized scaly eruptions typically on the trunk and proximal extremities. Atypical presentations of PR are common and can be a diagnostic challenge for clinicians. Here we present a case of a 26-year-old female who presented with a sudden onset of several asymptomatic, erythematous and scaly plaques on her trunk. Plaques sized 0.5-1cm in diameter that were distributed unilaterally (right side) on her chest, back and axilla. Atypical cases of PR are fairly common and less readily recognized...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28207427/progression-and-characterization-of-the-accelerated-atherosclerosis-in-iliac-artery-of-new-zealand-white-rabbits-effect-of-simvastatin
#10
Jitendra S Kanshana, Vivek Khanna, Vishal Singh, Manish Jain, Ankita Misra, Sachin Kumar, Mariya Farooqui, Manoj K Barthwal, Madhu Dikshit
OBJECTIVE: Although atherosclerosis is described in New Zealand White rabbit's iliac artery, yet details of time-dependent atherosclerosis progression are not well known. Further, a well characterized accelerated model of atherosclerosis is also required for the screening of candidate drugs to target specific steps of atherosclerosis development. The present study extensively characterizes the time-dependent plaque composition and functional responses of the atherosclerosis in rabbit iliac artery and its modification by simvastatin...
February 14, 2017: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/28206782/process-dissociation-analyses-of-memory-changes-in-healthy-aging-preclinical-and-very-mild-alzheimer-disease-evidence-for-isolated-recollection-deficits
#11
Peter R Millar, David A Balota, Geoffrey B Maddox, Janet M Duchek, Andrew J Aschenbrenner, Anne M Fagan, Tammie L S Benzinger, John C Morris
OBJECTIVE: Recollection and familiarity are independent processes that contribute to memory performance. Recollection is dependent on attentional control, which has been shown to be disrupted in early stage Alzheimer's disease (AD), whereas familiarity is independent of attention. The present longitudinal study examines the sensitivity of recollection estimates based on Jacoby's (1991) process dissociation procedure to AD-related biomarkers in a large sample of well-characterized cognitively normal middle-aged and older adults (N = 519) and the extent to which recollection discriminates these individuals from individuals with very mild symptomatic AD (N = 64)...
February 16, 2017: Neuropsychology
https://www.readbyqxmd.com/read/28205585/neuronally-directed-effects-of-rxr-activation-in-a-mouse-model-of-alzheimer-s-disease
#12
M M Mariani, T Malm, R Lamb, T R Jay, L Neilson, B Casali, L Medarametla, G E Landreth
Alzheimer's disease (AD) is characterized by extensive neuron loss that accompanies profound impairments in memory and cognition. We examined the neuronally directed effects of the retinoid X receptor agonist bexarotene in an aggressive model of AD. We report that a two week treatment of 3.5 month old 5XFAD mice with bexarotene resulted in the clearance of intraneuronal amyloid deposits. Importantly, neuronal loss was attenuated by 44% in the subiculum in mice 4 months of age and 18% in layer V of the cortex in mice 8 months of age...
February 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28205130/isolation-and-characterization-of-bacillus-cereus-bacteriophages-from-foods-and-soil
#13
Hyejin Oh, Dong Joo Seo, Su Been Jeon, Hyunkyung Park, Suntak Jeong, Hyang Sook Chun, Mihwa Oh, Changsun Choi
The aim of this study was to isolate and characterize Bacillus cereus bacteriophages of various origins. Twenty-seven bacteriophages against B. cereus were isolated from various Korean traditional fermented foods and soils. Plaque size, transmission electron microscopy, virulence profile, and in vitro lytic activity of bacteriophage isolates were examined. Transmission electron microscopy confirmed B. cereus bacteriophages belonging to the family Siphoviridae. Among B. cereus bacteriophages with broad host range, 18 isolates (66...
February 15, 2017: Food and Environmental Virology
https://www.readbyqxmd.com/read/28203158/a-28-year-old-male-patient-with-nail-tumors-skin-lesions-and-epilepsy
#14
Deepak M W Balak, Bernard A Zonnenberg, Juliette M J Spitzer-Naaijkens, Mieke M Hulshof
BACKGROUND: Tuberous sclerosis complex (TSC) is an autosomal dominant disorder characterized by the development of benign hamartomas in multiple organs. Most patients with TSC exhibit cutaneous manifestations. METHODS: We report a 28-year-old patient with multiple pink papules at the proximal nail fold of several toes. RESULTS: Histopathological analysis of a biopsy of a papule was consistent with an ungual fibroma. Histopathological analysis of a biopsy of an elevated skin-colored plaque at the lower back was diagnostic for a Shagreen patch...
January 2017: Case Reports in Dermatology
https://www.readbyqxmd.com/read/28196317/common-skin-conditions-in-children-noninfectious-rashes
#15
Brian Z Rayala, Dean S Morrell
Cutaneous adverse drug reactions are among the most common noninfectious rashes of childhood. Cutaneous adverse drug reactions are classified as morbilliform, urticarial, bullous, pustular, or psoriasiform. Atopic dermatitis is one of the most common inflammatory cutaneous eruptions, and is characterized by pruritus and flexural distribution. Emollients and topical corticosteroids are first-line therapies. Topical calcineurin inhibitors are second-line, steroid-sparing drugs for certain conditions, such as face and eyelid eczema...
February 2017: FP Essentials
https://www.readbyqxmd.com/read/28194751/juvenile-generalized-pustular-psoriasis-is-a-chronic-recalcitrant-disease-an-analysis-of-27-patients-seen-in-a-tertiary-hospital-in-johor-malaysia
#16
Bi-Wen Lau, Dee-Zhen Lim, Francesca Capon, Jonathan N Barker, Siew-Eng Choon
BACKGROUND: Limited information exists regarding juvenile generalized pustular psoriasis (GPP). We aim to determine the clinical profile and outcome of Malaysians with juvenile GPP. METHODS: Review of hospital case notes on patients with juvenile GPP. RESULTS: Twenty-seven patients with juvenile GPP were identified. Female to male ratio was 1.4:1. The median age at onset of GPP was 6.5 years. Ten patients had prior psoriasis with a median pre-pustular duration of 2...
February 14, 2017: International Journal of Dermatology
https://www.readbyqxmd.com/read/28194457/disposable-cartridge-platform-for-rapid-detection-of-viral-hemorrhagic-fever-viruses
#17
Steven M Scherr, David S Freedman, Krystle N Agans, Alexandru Rosca, Erik Carter, Melody Kuroda, Helen E Fawcett, Chad E Mire, Thomas W Geisbert, M Selim Ünlü, John H Connor
Light microscopy is a straightforward and highly portable imaging approach that is used for the detection of parasites, fungi, and bacteria. The detection of individual virus particles has historically not been possible through this approach. Thus, characterization of virus particles is typically performed using high-energy approaches such as electron microscopy. These approaches require purification of virions away from its normal milieu, significant levels of expertise, and only count a small number of particles at a time...
February 14, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28193831/%C3%AE-2-glycoprotein-i-recognition-drives-th1-inflammation-in-atherosclerotic-plaques-of-patients-with-primary-antiphospholipid-syndrome
#18
Marisa Benagiano, Maria Gerosa, Jacopo Romagnoli, Michael Mahler, Maria O Borghi, Alessia Grassi, Chiara Della Bella, Giacomo Emmi, Amedeo Amedei, Elena Silvestri, Lorenzo Emmi, Domenico Prisco, Pier Luigi Meroni, Mario M D'Elios
Antiphospholipid syndrome (APS) is characterized by recurrent arterial/venous thrombosis and miscarriages in the persistent presence of autoantibodies against phospholipid-binding proteins (aPLs), such as β2 glycoprotein I (β2GPI). In addition to the aPL thrombophilic effect, arterial thrombosis was related to accelerated atherosclerosis in animal models; however, contrasting findings were reported in primary APS patients with regard to the increased number of plaques or abnormal arterial wall thickness. We investigated the cytokine production induced by β2GPI in activated T cells that infiltrate in vivo atherosclerotic lesions of primary APS patients with atherothrombosis...
February 13, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28193229/involvement-of-fatty-acid-synthase-in-dengue-virus-infection
#19
Natthida Tongluan, Suwipa Ramphan, Phitchayapak Wintachai, Janthima Jaresitthikunchai, Sarawut Khongwichit, Nitwara Wikan, Supoth Rajakam, Sutee Yoksan, Nuttaporn Wongsiriroj, Sittiruk Roytrakul, Duncan R Smith
BACKGROUND: The mosquito transmitted Dengue virus (DENV) remains a significant public health problem in many tropical and subtropical countries. Increasing evidence has suggested that during the infection process cellular lipids play important roles at several stages of the replication cycle. This study sought to characterize the changes in lipid metabolism gene expression and investigated the role of one enzyme, fatty acid synthase, in DENV infection. METHODS: Transcriptional profiles of genes associated with lipid metabolism were evaluated by real-time PCR after infection of different cell lines (HepG2 and HEK293T/17) and with different DENVs (laboratory adapted and low passage)...
February 13, 2017: Virology Journal
https://www.readbyqxmd.com/read/28191738/the-role-of-neuroinflammation-and-amyloid-in-cognitive-impairment-in-an-app-ps1-transgenic-mouse-model-of-alzheimer-s-disease
#20
Shenghua Zhu, Junhui Wang, Yanbo Zhang, Jue He, Jiming Kong, Jun-Feng Wang, Xin-Min Li
AIMS: Both amyloid deposition and neuroinflammation appear in the early course of Alzheimer's disease (AD). However, the progression of neuroinflammation and its relationship with amyloid deposition and behavioral changes have not been fully elucidated. A better understanding the role of neuroinflammation in AD might extend our current knowledge to therapeutic intervention possibilities. METHODS: This study systematically characterized changes in behavioral abnormalities in APP/PS1 transgenic mice...
February 12, 2017: CNS Neuroscience & Therapeutics
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