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Immune modulation

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https://www.readbyqxmd.com/read/28813017/a-wireless-exg-interface-for-patch-type-ecg-holter-and-emg-controlled-robot-hand
#1
Kwangmuk Lee, Yun Young Choi, Dae Jung Kim, Hee Young Chae, Kyeonghwan Park, Young Min Oh, Sung Hun Woo, Jae Joon Kim
This paper presents a wearable electrophysiological interface with enhanced immunity to motion artifacts. Anti-artifact schemes, including a patch-type modular structure and real-time automatic level adjustment, are proposed and verified in two wireless system prototypes of a patch-type electrocardiogram (ECG) module and an electromyogram (EMG)-based robot-hand controller. Their common ExG readout integrated circuit (ROIC), which is reconfigurable for multiple physiological interfaces, is designed and fabricated in a 0...
August 16, 2017: Sensors
https://www.readbyqxmd.com/read/28812922/a-circulating-micro-rna-signature-serves-as-a-diagnostic-and-prognostic-indicator-in-sarcoidosis
#2
Christian Ascoli, Yue Huang, Cody Schott, Benjamin A Turturice, Ahmed Metwally, David L Perkins, Patricia W Finn
Micro-RNAs (miRNAs) act as post-transcriptional regulators of gene expression. In sarcoidosis, aberrant miRNA expression may enhance immune responses mounted against an unknown antigenic agent. We tested whether a distinct miRNA signature functions as a diagnostic biomarker and explored its role as an immune modulator in sarcoidosis. Expression of miRNAs from peripheral blood mononuclear cells from subjects that met clinical and histopathologic criteria for sarcoidosis were compared to those from matched controls in the ACCESS study...
August 16, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28812547/lung-epithelial-cells-therapeutically-inducible-effectors-of-antimicrobial-defense
#3
REVIEW
M M Leiva-Juárez, J K Kolls, S E Evans
Lung epithelial cells are increasingly recognized to be active effectors of microbial defense, contributing to both innate and adaptive immune function in the lower respiratory tract. As immune sentinels, lung epithelial cells detect diverse pathogens through an ample repertoire of membrane-bound, endosomal, and cytosolic pattern-recognition receptors (PRRs). The highly plastic epithelial barrier responds to detected threats via modulation of paracellular flux, intercellular communications, mucin production, and periciliary fluid composition...
August 16, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28812128/protective-effect-of-cigarette-smoke-on-the-course-of-dextran-sulfate-sodium-induced-colitis-is-accompanied-by-lymphocyte-subpopulation-changes-in-the-blood-and-colon
#4
Jaroslaw Daniluk, Urszula Daniluk, Joanna Reszec, Malgorzata Rusak, Milena Dabrowska, Andrzej Dabrowski
BACKGROUND: Cigarette smoke (CS) exerts protective effect against ulcerative colitis. The mechanism of this phenomenon remains unknown. One of the possible explanation by which CS exerts its anti-inflammatory action is modulation of immune system. Therefore, the aim of the study was to evaluate the effect of CS on the course of inflammation and subpopulations of lymphocytes in the blood and colon in mice with dextran sulfate sodium (DSS)-induced colitis. METHODS: C57BL6/cmdb mice were exposed to CS for 4 weeks...
August 16, 2017: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/28811959/t-helper-and-t-regulatory-cells-modulation-in-head-and-neck-squamous-cell-carcinoma
#5
REVIEW
Daniele Maggioni, Lorenzo Pignataro, Werner Garavello
Head and neck squamous cell carcinoma (HNSCC) is one of the most diffused cancer types, characterized by a high reoccurrence rate, mainly due to the inability of current therapeutic approaches to completely eradicate cancer cells. HNSCC patients often have defective immune functions, thus allowing cancer immune escape and cancer spreading. Particularly important in driving immune escape during HNSCC progression are T-helper and T-regulatory cells. New insights into their mechanisms of action might support the development of effective and long-lasting immunotherapy...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28811825/ethanol-extract-of-mylabris-phalerata-inhibits-m2-polarization-induced-by-recombinant-il-4-and-il-13-in-murine-macrophages
#6
Hwan-Suck Chung, Bong-Seon Lee, Jin Yeul Ma
Mylabris phalerata (MP) is an insect used in oriental herbal treatments for tumor, tinea infections, and stroke. Recent studies have shown that tumor-associated macrophages (TAM) have detrimental roles such as tumor progression, angiogenesis, and metastasis. Although TAM has phenotypes and characteristics in common with M2-polarized macrophages, M1 macrophages have tumor suppression and immune stimulation effects. Medicines polarizing macrophages to M1 have been suggested to have anticancer effects via the modulation of the tumor microenvironment...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28811745/inhibition-of-inflammation-mediated-through-the-tumor-necrosis-factor-%C3%AE-biochemical-pathway-can-lead-to-favorable-outcomes-in-alzheimer-disease
#7
REVIEW
Daniah Shamim, Michael Laskowski
Tumor necrosis factor α (TNF-α) inhibitors have long been used as disease-modifying agents in immune disorders. Recently, research has shown a role of chronic neuroinflammation in the pathophysiology of neurodegenerative diseases such as Alzheimer disease, and interest has been generated in the use of anti-TNF agents and TNF-modulating agents for prevention and treatment. This article extensively reviewed literature on animal studies testing these agents. The results showed a role for direct and indirect TNF-α inhibition through agents such as thalidomide, 3,6-dithiothalidomide, etanercept, infliximab, exendin-4, sodium hydrosulfide, minocycline, imipramine, and atorvastatin...
2017: Journal of Central Nervous System Disease
https://www.readbyqxmd.com/read/28811681/osteopontin-impacts-west-nile-virus-pathogenesis-and-resistance-by-regulating-inflammasome-components-and-cell-death-in-the-central-nervous-system-at-early-time-points
#8
Nikki Bortell, Claudia Flynn, Bruno Conti, Howard S Fox, Maria Cecilia G Marcondes
Osteopontin (OPN) is a molecule that is common in central nervous system (CNS) pathologies, which participates in the activation, migration, and survival of inflammatory cells. However, the mechanisms by which OPN modulates inflammatory pathways are not clear. To understand the role of OPN in CNS viral infections, we used a lethal mouse model of West Nile virus (WNV), characterized by the injection of high doses of the Eg101 strain of WNV, causing the increase of OPN levels in the brain since early time points...
2017: Mediators of Inflammation
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
#9
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/28811623/immune-dysregulation-in-patients-with-carpal-tunnel-syndrome
#10
Gila Moalem-Taylor, Benny Baharuddin, Barbara Bennett, Arun V Krishnan, William Huynh, Matthew C Kiernan, Cindy Shin-Yi Lin, Boaz Shulruf, Elizabeth Keoshkerian, Barbara Cameron, Andrew Lloyd
Peripheral immunity plays a key role in maintaining homeostasis and conferring crucial neuroprotective effects on the injured nervous system, while at the same time may contribute to increased vulnerability to neuropathic pain. Little is known about the reciprocal relationship between entrapment neuropathy and peripheral immunity. This study investigated immune profile in patients with carpal tunnel syndrome (CTS), the most prevalent entrapment neuropathy. All patients exhibited neurophysiological abnormalities in the median nerve, with the majority reporting neuropathic pain symptoms...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811580/%C3%AE-eta-2-glycoprotein-i-protects-mice-against-gram-negative-septicaemia-in-a-sexually-dimorphic-manner
#11
Fatima El-Assaad, Miao Qi, Alice Kizny Gordon, Jian Qi, Shangwen Dong, Freda Passam, James Crofton Weaver, Bill Giannakopoulos, Steven Anthony Krilis
The immune responses of males and females to bacterial infections display differences. The mechanisms that underlie this sexual dimorphism are multifactorial. Lipopolysaccharide (LPS) contributes to the pathogenesis of endotoxaemia. We have previously demonstrated that the plasma protein beta-2 glycoprotein-1 (β2GPI) reduces LPS-induced inflammation in male mice. In the present study using a more robust infection model of septicaemia the role of β2GPI is examined in both male and female wild type (WT) and β2GPI deficient (β2GPI(-/-)) mice challenged with Escherichia coli (E...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811476/lyn-and-fyn-function-as-molecular-switches-that-control-immunoreceptors-to-direct-homeostasis-or-inflammation
#12
Sanae Ben Mkaddem, Amaya Murua, Héloise Flament, Dimitri Titeca-Beauport, Carine Bounaix, Luca Danelli, Pierre Launay, Marc Benhamou, Ulrich Blank, Eric Daugas, Nicolas Charles, Renato C Monteiro
Immunoreceptors can transduce either inhibitory or activatory signals depending on ligand avidity and phosphorylation status, which is modulated by the protein kinases Lyn and Fyn. Here we show that Lyn and Fyn control immune receptor signaling status. SHP-1 tyrosine 536 phosphorylation by Lyn activates the phosphatase promoting inhibitory signaling through the immunoreceptor. By contrast, Fyn-dependent phosphorylation of SHP-1 serine 591 inactivates the phosphatase, enabling activatory immunoreceptor signaling...
August 15, 2017: Nature Communications
https://www.readbyqxmd.com/read/28811345/inhibitors-of-the-histone-methyltransferases-ezh2-1-induce-a-potent-antiviral-state-and-suppress-infection-by-diverse-viral-pathogens
#13
Jesse H Arbuckle, Paul J Gardina, David N Gordon, Heather D Hickman, Jonathan W Yewdell, Theodore C Pierson, Timothy G Myers, Thomas M Kristie
Epigenetic regulation is based on a network of complexes that modulate the chromatin character and structure of the genome to impact gene expression, cell fate, and development. Thus, epigenetic modulators represent novel therapeutic targets used to treat a range of diseases, including malignancies. Infectious pathogens such as herpesviruses are also regulated by cellular epigenetic machinery, and epigenetic therapeutics represent a novel approach used to control infection, persistence, and the resulting recurrent disease...
August 15, 2017: MBio
https://www.readbyqxmd.com/read/28811287/a-plant-effector-triggered-immunity-signaling-sector-is-inhibited-by-pattern-triggered-immunity
#14
Noriyuki Hatsugai, Daisuke Igarashi, Keisuke Mase, You Lu, Yayoi Tsuda, Suma Chakravarthy, Hai-Lei Wei, Joseph W Foley, Alan Collmer, Jane Glazebrook, Fumiaki Katagiri
Since signaling machineries for two modes of plant-induced immunity, pattern-triggered immunity (PTI) and effector-triggered immunity (ETI), extensively overlap, PTI and ETI signaling likely interact. In an Arabidopsis quadruple mutant, in which four major sectors of the signaling network, jasmonate, ethylene, PAD4, and salicylate, are disabled, the hypersensitive response (HR) typical of ETI is abolished when the Pseudomonas syringae effector AvrRpt2 is bacterially delivered but is intact when AvrRpt2 is directly expressed in planta These observations led us to discovery of a network-buffered signaling mechanism that mediates HR signaling and is strongly inhibited by PTI signaling...
August 15, 2017: EMBO Journal
https://www.readbyqxmd.com/read/28811258/category-selective-human-brain-processes-elicited-in-fast-periodic-visual-stimulation-streams-are-immune-to-temporal-predictability
#15
Genevieve L Quek, Bruno Rossion
Recording direct neural activity when periodically inserting exemplars of a particular category in a rapid visual stream of other objects offers an objective and efficient way to quantify perceptual categorization and characterize its spatiotemporal dynamics. However, since periodicity entails predictability, perceptual categorization processes identified within this framework may be partly generated or modulated by temporal expectations. Here we present a stringent test of the hypothesis that temporal predictability generates or modulates category-selective neural processes as measured in a rapid periodic visual stimulation stream...
August 12, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28811252/expression-of-alcam-cd166-and-pd-l1-cd274-independently-predicts-shorter-survival-in-malignant-pleural-mesothelioma
#16
Shingo Inaguma, Jerzy Lasota, Zengfeng Wang, Piotr Czapiewski, Renata Langfort, Janusz Rys, Joanna Szpor, Piotr Waloszczyk, Krzysztof Okoń, Wojciech Biernat, Hiroshi Ikeda, David S Schrump, Raffit Hassan, Markku Miettinen
Diffuse malignant mesothelioma of the pleura is a highly aggressive tumor typically associated with short survival. ALCAM (CD166), a type I transmembrane protein, is a member of the immunoglobulin superfamily. In normal cells, ALCAM regulates physiological processes such as angiogenesis and immune response. In cancer, it is associated with neoplastic progression, including invasion, migration, and metastasis. Furthermore, ALCAM is considered one of the cancer stem cell markers such as ALDH1 (ALDH1A1) and SALL4...
August 12, 2017: Human Pathology
https://www.readbyqxmd.com/read/28811194/immunogenetic-studies-of-the-hepatitis-c-virus-infection-in-an-era-of-pan-genotype-antiviral-therapies-effective-treatment-is-coming
#17
Joel Henrique Ellwanger, Valéria de Lima Kaminski, Jacqueline Maria Valverde-Villegas, Daniel Simon, Vagner Ricardo Lunge, José Artur Bogo Chies
What are the factors that influence human hepatitis C virus (HCV) infection, hepatitis status establishment, and disease progression? Firstly, one has to consider the genetic background of the host and HCV genotypes. The immunogenetic host profile will reflect how each infected individual deals with infection. Secondly, there are environmental factors that drive susceptibility or resistance to certain viral strains. These will dictate (I) the susceptibility to infection; (II) whether or not an infected person will promote viral clearance; (III) the immune response and the response profile to therapy; and (IV) whether and how long it would take to the development of HCV-associated diseases, as well as their severity...
August 12, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28810822/gamma-irradiated-%C3%AE-glucan-modulates-signaling-molecular-targets-of-hepatocellular-carcinoma-in-rats
#18
Sawsan M Elsonbaty, Walid E Zahran, Fatma Sm Moawed
β-glucans are one of the most abundant forms of polysaccharides known as biological response modifiers which influence host's biological response and stimulate immune system. Accordingly, this study was initiated to evaluate irradiated β-glucan as a modulator for cellular signaling growth factors involved in the pathogenesis of hepatocellular carcinoma in rats. Hepatocellular carcinoma was induced with 20 mg diethylnitrosamine/kg BW. Rats received daily by gastric gavage 65 mg irradiated β-glucan/kg BW. It was found that treatment of rats with diethylnitrosamine induced hepatic injury and caused significant increase in liver injury markers with a concomitant significant increase in both hepatic oxidative and inflammatory indices: alpha-fetoprotein, interferon gamma, and interleukin 6 in comparison with normal and irradiated β-glucan-treated groups...
August 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28810616/single-blinded-randomized-and-controlled-clinical-trial-evaluating-the-effects-of-omega-3-fatty-acids-among-septic-patients-with-intestinal-dysfunction-a-pilot-study
#19
Huaisheng Chen, Wei Wang, Yingcai Hong, Huadong Zhang, Chengying Hong, Xueyan Liu
Sepsis is a systemic inflammatory reaction, which is aggravated by aspects of the immune response that are thought to be inhibited by Omega-3 fatty acids. The aim of the present study was to determine if Omega-3 fatty acid could modulate immunological function and improve survival rate among septic patients with intestinal dysfunction. A total of 48 mechanically ventilated patients with intestinal dysfunction were included in this prospective, randomized and single-blind clinical study. Patients were randomly divided into control (group A) and treatment groups (group B)...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28810165/human-immune-system-mouse-models-of-ebola-virus-infection
#20
REVIEW
Jessica R Spengler, Joseph Prescott, Heinz Feldmann, Christina F Spiropoulou
Human immune system (HIS) mice, immunodeficient mice engrafted with human cells (with or without donor-matched tissue), offer a unique opportunity to study pathogens that cause disease predominantly or exclusively in humans. Several HIS mouse models have recently been used to study Ebola virus (EBOV) infection and disease. The results of these studies are encouraging and support further development and use of these models in Ebola research. HIS mice provide a small animal model to study EBOV isolates, investigate early viral interactions with human immune cells, screen vaccines and therapeutics that modulate the immune system, and investigate sequelae in survivors...
August 11, 2017: Current Opinion in Virology
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