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https://www.readbyqxmd.com/read/28815177/tlr4-in-glioblastoma-when-cancer-stem-cells-ignore-danger-signals
#1
EDITORIAL
Christoph P Beier, Bjarne W Kristensen
No abstract text is available yet for this article.
2017: Stem Cell Investigation
https://www.readbyqxmd.com/read/28814470/a-dangerous-context-changes-the-way-that-rats-learn-about-and-discriminate-between-innocuous-events-in-sensory-preconditioning
#2
Nathan M Holmes, R Frederick Westbrook
Four experiments used a sensory preconditioning protocol to examine how a dangerous context influences learning about innocuous events. In Experiments 1, 2, and 3, rats were exposed to presentations of a tone followed immediately or 20-sec later by presentations of a light. These tone-light pairings occurred in a context that was either familiar and safe, or equally familiar but dangerous, that is, it was a context in which rats had been exposed to footshock. Rats were next exposed to parings of the light and shock and then tested with the tone (and light)...
September 2017: Learning & Memory
https://www.readbyqxmd.com/read/28813640/innate-immune-signaling-in-the-ventral-tegmental-area-contributes-to-drug-primed-reinstatement-of-cocaine-seeking
#3
Kyle T Brown, Sophia C Levis, Casey E O'Neill, Alexis L Northcutt, Timothy J Fabisiak, Linda R Watkins, Ryan K Bachtell
Cocaine addiction is a chronic relapsing disorder characterized by persistent perturbations to an organism's homeostatic processes that result in maladaptive drug seeking. Although considerable attention has been directed at the consequences of neuronal changes following chronic cocaine taking, few studies have examined the role of microglia, the brain's resident immune cells, following chronic cocaine administration. Toll-Like Receptor 4 (TLR4) is a molecular pattern receptor that recognizes pathogens, danger signals, and xenobiotics and induces proinflammatory signaling in the central nervous system...
August 13, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28811679/bisphenol-a-does-not-mimic-estrogen-in-the-promotion-of-the-in-vitro-response-of-murine-dendritic-cells-to-toll-like-receptor-ligands
#4
Marita Chakhtoura, Uma Sriram, Michelle Heayn, Joshua Wonsidler, Christopher Doyle, Joudy-Ann Dinnall, Stefania Gallucci, Rebecca A Roberts
Sex hormones affect immune responses and might promote autoimmunity. Endocrine disrupting chemicals such as bisphenol A (BPA) may mimic their immune effects. Conventional dendritic cells (cDCs) are pivotal initiators of immune responses upon activation by danger signals coming from pathogens or distressed tissues through triggering of the Toll-like receptors (TLRs). We generated in vitro murine cDCs in the absence of estrogens and measured the effects of exogenously added estrogen or BPA on their differentiation and activation by the TLR ligands LPS and CpG...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28809715/prescribed-performance-control-of-uncertain-euler-lagrange-systems-subject-to-full-state-constraints
#5
Kai Zhao, Yongduan Song, Tiedong Ma, Liu He
This paper studies the zero-error tracking control problem of Euler-Lagrange systems subject to full-state constraints and nonparametric uncertainties. By blending an error transformation with barrier Lyapunov function, a neural adaptive tracking control scheme is developed, resulting in a solution with several salient features: 1) the control action is continuous and C¹ smooth; 2) the full-state tracking error converges to a prescribed compact set around origin within a given finite time at a controllable rate of convergence that can be uniformly prespecified; 3) with Nussbaum gain in the loop, the tracking error further shrinks to zero as t→∞; and 4) the neural network (NN) unit can be safely included in the loop during the entire system operational envelope without the danger of violating the compact set precondition imposed on the NN training inputs...
August 11, 2017: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28795798/a-two-photon-and-deep-red-emission-ratiometric-fluorescent-probe-with-a-large-emission-shift-and-signal-ratios-for-sulfur-dioxide-ultrafast-response-and-applications-in-living-cells-brain-tissues-and-zebrafishes
#6
Yanyan Ma, Yonghe Tang, Yuping Zhao, Shiying Gao, Weiying Lin
Sulfur dioxide (SO2) is a dangerous environmental pollutant. Excessive intake of it may cause some respiratory diseases and even lung cancer. The development of effective methods for detecting of SO2 is of great importance for environment and physiology. Herein, we have designed and synthesized a novel two-photon (TP) and deep-red emission ratiometric fluo-rescent probe (CP) for detecting of SO2. Notably, the novel probe CP exhibited ultrafast response to SO2 in less than 5 sec-onds, and displayed a great emission shift (195 nm) and a large emission signal ratio variation (enhancement from 0...
August 10, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28792463/the-telomeric-response-to-viral-infection
#7
REVIEW
Zhuo Wang, Zhong Deng, Steve Tutton, Paul M Lieberman
The ends of linear genomes, whether viral or cellular, can elicit potent DNA damage and innate immune signals. DNA viruses entering the nucleus share many features with telomeres in their ability to either suppress or co-opt these pathways. Here, we review some of the common mechanisms that viruses and telomeres use to manage the DNA damage and innate immune response pathways. We highlight recent studies on the role of the telomere repeat-containing RNA (TERRA) in response to viral infection. We discuss how TERRA can be activated through a p53-response element embedded in a retrotransposon-like repeat found in human subtelomeres...
August 9, 2017: Viruses
https://www.readbyqxmd.com/read/28791446/key-role-of-alternative-oxidase-in-lovastatin-solid-state-fermentation
#8
Ailed Pérez-Sánchez, Salvador Uribe-Carvajal, Alfredo Cabrera-Orefice, Javier Barrios-González
Lovastatin is a commercially important secondary metabolite produced by Aspergillus terreus, either by solid-state fermentation or by submerged fermentation. In a previous work, we showed that reactive oxygen species (ROS) accumulation in idiophase positively regulates lovastatin biosynthetic genes. In addition, it has been found that lovastatin-specific production decreases with aeration in solid-state fermentation (SSF). To study this phenomenon, we determined ROS accumulation during lovastatin SSF, under high and low aeration conditions...
August 8, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28789700/two-different-protein-expression-profiles-of-oral-squamous-cell-carcinoma-analyzed-by-immunoprecipitation-high-performance-liquid-chromatography
#9
Soung Min Kim, Dasul Jeong, Min Keun Kim, Sang Shin Lee, Suk Keun Lee
BACKGROUND: Oral squamous cell carcinoma (OSCC) is one of the most dangerous cancers in the body, producing serious complications with individual behaviors. Many different pathogenetic factors are involved in the carcinogenesis of OSCC. Cancer cells derived from oral keratinocytes can produce different carcinogenic signaling pathways through differences in protein expression, but their protein expression profiles cannot be easily explored with ordinary detection methods. METHODS: The present study compared the protein expression profiles between two different types of OSCCs, which were analyzed through immunoprecipitation high-performance liquid chromatography (IP-HPLC)...
August 8, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28779900/sensing-danger-key-to-activating-plant-immunity
#10
REVIEW
Andrea A Gust, Rory Pruitt, Thorsten Nürnberger
In both plants and animals, defense against pathogens relies on a complex surveillance system for signs of danger. Danger signals may originate from the infectious agent or from the host itself. Immunogenic plant host factors can be roughly divided into two categories: molecules which are passively released upon cell damage ('classical' damage-associated molecular patterns, DAMPs), and peptides which are processed and/or secreted upon infection to modulate the immune response (phytocytokines). We highlight the ongoing challenge to understand how plants sense various danger signals and integrate this information to produce an appropriate immune response to diverse challenges...
August 2, 2017: Trends in Plant Science
https://www.readbyqxmd.com/read/28767057/regulation-of-nkg2d-dependent-nk-cell-functions-the-yin-and-the-yang-of-receptor-endocytosis
#11
REVIEW
Rosa Molfetta, Linda Quatrini, Angela Santoni, Rossella Paolini
Natural-killer receptor group 2, member D (NKG2D) is a well characterized natural killer (NK) cell activating receptor that recognizes several ligands poorly expressed on healthy cells but up-regulated upon stressing stimuli in the context of cancer or viral infection. Although NKG2D ligands represent danger signals that render target cells more susceptible to NK cell lysis, accumulating evidence demonstrates that persistent exposure to ligand-expressing cells causes the decrease of NKG2D surface expression leading to a functional impairment of NKG2D-dependent NK cell functions...
August 2, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28766178/differential-regulation-of-il-1%C3%AE-and-il-6-release-in-murine-macrophages
#12
Seishiro Hirano, Quan Zhou, Akiko Furuyama, Sanae Kanno
Asbestos and silica (exogenous danger) and adenosine triphosphate (ATP, endogenous danger-signaling molecule) synergistically increase IL-1β release from endotoxin-primed macrophage, which is mediated by NOD-like receptor protein 3 (NLRP3) inflammasome. However, the conversion of pro-IL-1β to its active form seems to depend on the macrophage cell types. In the present study, bone marrow-derived macrophages (BMM) and three murine macrophage cell lines, J774.1, J774A.1, and RAW264.7 were exposed to ATP or fibrous titanium dioxide (FTiO2) in the presence or absence of lipopolysaccharide (LPS), and the concentrations of IL-1β and IL-6 in both cell lysates and in the culture media were measured by immunoblotting to differentiate active form of IL-1β from pro-IL-1β...
August 1, 2017: Inflammation
https://www.readbyqxmd.com/read/28763785/analytical-thermodynamical-and-kinetic-characteristics-of-photoluminescence-immunosensor-for-the-determination-of-ochratoxin-a
#13
Roman Viter, Maryna Savchuk, Igor Iatsunskyi, Zuzanna Pietralik, Nikolay Starodub, Nelya Shpyrka, Almira Ramanaviciene, Arunas Ramanavicius
Ochratoxin A (OTA) is one of the most widespread and dangerous food contaminants. Therefore, rapid, label-free and precise detection of low OTA concentrations requires novel sensing elements with advanced bio-analytical properties. In the present paper we report photoluminescence (PL) based immunosensor for the detection of OTA. During the development of immunosensor photoluminescent ZnO nanorods (ZnO-NRs) were deposited on glass substrate. Then the ZnO-NRs were silanized and covalently modified by Protein-A (Glass/ZnO-NRs/Protein-A)...
July 22, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28763140/necroptosis-in-the-periodontal-homeostasis-signals-emanating-from-dying-cells
#14
REVIEW
Jiao Li, XiaoJing Ke, Fuhua Yan, Lang Lei, Houxuan Li
Periodontal tissues are constantly exposed to microbial stimuli. The equilibrium between microbes and host defense system helps maintain the homeostasis in the periodontal microenvironment. Growth of pathogenic bacteria in dental biofilms may induce proinflammatory cytokine production to recruit sentinel cells, mainly neutrophils and monocytes into the gingival sulcus or the periodontal pocket. Moreover,dybiosis with over-growth of anaerobic pathogens, such as Porphyromonas gingivalis and Tannerella forsythia, may induce death of both immune cells and host resident cells...
August 1, 2017: Oral Diseases
https://www.readbyqxmd.com/read/28757612/the-cd24-siglec-g-axis-protects-mice-against-cuprizone-induced-oligodendrocyte-loss-targeting-danger-signal-for-neuroprotection
#15
Ning Li, Pan Zheng, Yang Liu
No abstract text is available yet for this article.
July 31, 2017: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/28751890/tlr7-tlr9-and-b-cell-receptor-signaling-crosstalk-promotion-of-potentially-dangerous-b-cells
#16
REVIEW
Amy N Suthers, Stefanie Sarantopoulos
B cells are capable of receptor-mediated responses to foreign antigens. Recognition of microbial-derived nucleic acid (NA) by toll-like receptors (TLRs) 7 and 9 in B cells has been substantiated. Endogenous NA released from damaged or dying cells can also be immunogenic in certain contexts and can incite aberrant activation of B cells. When TLR-driven B cell receptor (BCR)-activated B cells are not properly constrained, pathologic autoantibodies are produced. It is also clear that endosomal TLR7/TLR9 can operate in conjunction with BCR...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28751766/foragers-of-sympatric-asian-honey-bee-species-intercept-competitor-signals-by-avoiding-benzyl-acetate-from-apis-cerana-alarm-pheromone
#17
Ping Wen, Yanan Cheng, Yufeng Qu, Hongxia Zhang, Jianjun Li, Heather Bell, Ken Tan, James Nieh
While foraging, animals can form inter- and intraspecific social signalling networks to avoid similar predators. We report here that foragers of different native Asian honey bee species can detect and use a specialized alarm pheromone component, benzyl acetate (BA), to avoid danger. We analysed the volatile alarm pheromone produced by attacked workers of the most abundant native Asian honey bee, Apis cerana and tested the responses of other bee species to these alarm signals. As compared to nest guards, A. cerana foragers produced 3...
July 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28750317/advantages-of-cooled-fiber-for-monitoring-laser-tissue-ablation-through-temporal-and-spectral-analysis-of-rf-ultrasound-signal-a-case-study
#18
Simona Granchi, Enrico Vannacci, Luca Breschi, Elena Biagi
The promising minimally invasive laser thermal therapy technique may be improved if thermal lesions induced into the tissue can be carefully monitored in extension and morphology during the treatment. According to results obtained in several recent experimentations, solutions that avoid tissue carbonization during the treatment have been proposed, in order to allow deeper and longer lasting light penetration in treated tissue and to reduce failures of the applicator tip and fiber optic, dangerous for patients...
July 19, 2017: Ultrasonics
https://www.readbyqxmd.com/read/28749599/heat-induced-inflammation-and-its-role-in-esophageal-cancer
#19
REVIEW
Mohaddese Maghsudlu, Ehsan Farashahi Yazd
Esophageal cancer as the sixth common cause of cancer death in the world consists of different histological types with various incidence patterns. Among them, esophageal adenocarcinoma and esophageal squamous cell carcinoma are the most prevalent types which also have different causality, cell of origin and risk factors. Since epidemiological studies have announced consumption of hot substances as one of the major risk factors for squamous cell carcinoma, evaluating the effect of this external stress on esophagus cells seems desirable...
July 27, 2017: Journal of Digestive Diseases
https://www.readbyqxmd.com/read/28747793/bone-matrix-components-activate-the-nlrp3-inflammasome-and-promote-osteoclast-differentiation
#20
Yael Alippe, Chun Wang, Biancamaria Ricci, Jianqiu Xiao, Chao Qu, Wei Zou, Deborah V Novack, Yousef Abu-Amer, Roberto Civitelli, Gabriel Mbalaviele
The NLRP3 inflammasome senses a variety of signals referred to as danger associated molecular patterns (DAMPs), including those triggered by crystalline particulates or degradation products of extracellular matrix. Since some DAMPs confer tissue-specific activation of the inflammasomes, we tested the hypothesis that bone matrix components function as DAMPs for the NLRP3 inflammasome and regulate osteoclast differentiation. Indeed, bone particles cause exuberant osteoclastogenesis in the presence of RANKL, a response that correlates with NLRP3 abundance and the state of inflammasome activation...
July 26, 2017: Scientific Reports
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