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https://www.readbyqxmd.com/read/28335522/extracellular-vesicles-deliver-host-and-virus-rna-and-regulate-innate-immune-response
#1
REVIEW
Takahisa Kouwaki, Masaaki Okamoto, Hirotake Tsukamoto, Yoshimi Fukushima, Hiroyuki Oshiumi
The innate immune system plays a crucial role in controlling viral infection. Pattern recognition receptors (PRRs), such as Toll-like receptors and RIG-I-like receptors, sense viral components called pathogen-associated molecular patterns (PAMPs) and trigger signals to induce innate immune responses. Extracellular vesicles (EVs), including exosomes and microvesicles, deliver functional RNA and mediate intercellular communications. Recent studies have revealed that EVs released from virus-infected cells deliver viral RNA to dendritic cells and macrophages, thereby activating PRRs in recipient cells, which results in the expression of type I interferon and pro-inflammatory cytokines...
March 20, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28335505/porcine-epidemic-diarrhea-virus-induces-autophagy-to-benefit-its-replication
#2
Xiaozhen Guo, Mengjia Zhang, Xiaoqian Zhang, Xin Tan, Hengke Guo, Wei Zeng, Guokai Yan, Atta Muhammad Memon, Zhonghua Li, Yinxing Zhu, Bingzhou Zhang, Xugang Ku, Meizhou Wu, Shengxian Fan, Qigai He
The new porcine epidemic diarrhea (PED) has caused devastating economic losses to the swine industry worldwide. Despite extensive research on the relationship between autophagy and virus infection, the concrete role of autophagy in porcine epidemic diarrhea virus (PEDV) infection has not been reported. In this study, autophagy was demonstrated to be triggered by the effective replication of PEDV through transmission electron microscopy, confocal microscopy, and Western blot analysis. Moreover, autophagy was confirmed to benefit PEDV replication by using autophagy regulators and RNA interference...
March 19, 2017: Viruses
https://www.readbyqxmd.com/read/28335387/dectin-1-mediated-pathway-contributes-to-fusarium-proliferatum-induced-cxcl-8-release-from-human-respiratory-epithelial-cells
#3
Chang-Ching Yeh, Huann-Cheng Horng, Hong Chou, Hsiao-Yun Tai, Horng-Der Shen, Shie-Liang Hsieh, Peng-Hui Wang
Fusarium species are causative agents of human respiratory disorders and are distributed widely in our environment. Little is known of their interaction with human respiratory epithelial cells, which may contribute to allergic airway responses. In this study, we report on the release of C-X-C motif chemokine ligand 8 (CXCL-8) from human bronchial epithelial BEAS-2B cells upon stimulation with Fusarium proliferatum extracts. F. proliferatum-induced cytokine release from BEAS-2B cells was determined by cytokine array and CXCL-8 enzyme-linked immunosorbent assay (ELISA) kits...
March 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28335329/nanoparticle-based-delivery-of-anaplasma-marginale-membrane-proteins-virb9-1-and-virb10-produced-in-the-pichia-pastoris-expression-system
#4
Bing Zhang, Antonio S Cavallaro, Karishma T Mody, Jun Zhang, James R Deringer, Wendy C Brown, Timothy J Mahony, Chengzhong Yu, Neena Mitter
Bovine anaplasmosis or cattle-tick fever is a tick-borne haemolytic disease caused by the rickettsial haemoparasite Anaplasma marginale in tropical and subtropical areas of the world. While difficult to express, the proteins VirB9-1 and VirB10 are immunogenic components of the outer membrane type IV secretion system that have been identified as candidate antigens for vaccines targeting of A. marginale. Soluble VirB9-1 and VirB10 were successfully expressed using Pichia pastoris. When formulated with the self-adjuvanting silica vesicles, SV-100 (diameter: 50 nm, and pore entrance size: 6 nm), 200 µg of VirB9-1 and VirB10 were adsorbed per milligram of nanoparticle...
November 5, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335090/in-ovo-vaccination-using-eimeria-profilin-and-clostridium-perfringens-netb-proteins-in-montanide-ims-adjuvant-increases-protective-immunity-against-experimentally-induced-necrotic-enteritis
#5
Hyun Soon Lillehoj, Seung Ik Jang, Alfredo Panebra, Erik Peter Lillehoj, Laurent Dupuis, Juliette B Arous, Seung Kyoo Lee, Sung Taek Oh
Objective: The effects of vaccinating 18-day-old chicken embryos with the combination of recombinant Eimeria profilin plus Clostridium perfringens NetB proteins mixed in the Montanide IMS adjuvant on the chicken immune response to necrotic enteritis (NE) were investigated using an E. maxima/C. perfringens co-infection NE disease model that we previously developed. Methods: Eighteen-day-old broiler embryos were injected with 100 μl of PBS, profilin, profilin plus NetB, profilin plus NetB/Montanide adjuvant (IMS 106), and profilin plus Net-B/Montanide adjuvant (IMS 101)...
March 21, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28335075/breastmilk-with-a-high-omega-6-to-omega-3-fatty-acid-ratio-induced-cellular-events-similar-to-insulin-resistance-and-obesity-in-3t3-l1-adipocytes
#6
H Vaidya, S K Cheema
BACKGROUND: An imbalance of omega (n)-3 and n-6 polyunsaturated fatty acids (PUFA) during critical periods of development may have adverse effects on the health of the newborn in later life. OBJECTIVES: We hypothesized that breastmilk with higher n-6 to n-3 PUFA ratio will have higher inflammatory cytokines and initiate cellular events similar to insulin resistance and obesity. METHODS: Breastmilk was collected from healthy women who gave natural birth at full term...
March 23, 2017: Pediatric Obesity
https://www.readbyqxmd.com/read/28334964/mutations-in-the-leukemia-inhibitory-factor-receptor-lifr-gene-and-lifr-deficiency-cause-urinary-tract-malformations
#7
Anne Kosfeld, Frank Brand, Anna-Carina Weiss, Martin Kreuzer, Michaela Goerk, Helge Martens, Stephanie Schubert, Anne-Kathrin Schäfer, Vera Riehmer, Imke Hennies, Jan Hinrich Bräsen, Lars Pape, Kerstin Amann, Lars Krogvold, Anna Bjerre, Christoph Daniel, Andreas Kispert, Dieter Haffner, Ruthild G Weber
Congenital anomalies of the kidneys and urinary tract (CAKUT) are the most common cause of chronic kidney disease in children. As CAKUT is a genetically heterogeneous disorder and most cases are genetically unexplained, we aimed to identify new CAKUT causing genes. Using whole-exome sequencing and trio-based de novo analysis, we identified a novel heterozygous de novo frameshift variant in the leukemia inhibitory factor receptor (LIFR) gene causing instability of the mRNA in a patient presenting with bilateral CAKUT and requiring kidney transplantation at one year of age...
March 8, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28334928/functional-assessment-of-ctcf-sites-at-cytokine-sensing-mammary-enhancers-using-crispr-cas9-gene-editing-in-mice
#8
Hye Kyung Lee, Michaela Willi, Chaochen Wang, Chul Min Yang, Harold E Smith, Chengyu Liu, Lothar Hennighausen
The zinc finger protein CTCF has been invoked in establishing boundaries between genes, thereby controlling spatial and temporal enhancer activities. However, there is limited genetic evidence to support the concept that these boundaries restrict the search space of enhancers. We have addressed this question in the casein locus containing five mammary and two non-mammary genes under the control of at least seven putative enhancers. We have identified two CTCF binding sites flanking the locus and two associated with a super-enhancer...
March 16, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28334917/late-onset-cystic-brain-necrosis-after-radiotherapy-for-nasopharyngeal-carcinoma
#9
Wenli Fang, Beibei Gu, Xiuna Jing, Songhua Xiao, Shengnuo Fan, Wang Liao, Yuqiu Zheng, Jun Liu
Background: Cystic brain radionecrosis (CBRN) is a late-onset devastating complication after radiotherapy for head and neck neoplasms, especially for nasopharyngeal carcinoma (NPC). To our knowledge, it has scarcely been reported. Methods: We retrospectively reviewed all available medical records of NPC patients with CBRN who were treated with surgical intervention. Results: Sixteen patients were identified in this study and the mean latency of CBRN was 9...
February 24, 2017: Japanese Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28334726/preparation-characterization-and-anti-ulcer-efficacy-of-sanguinarine-loaded-solid-lipid-nanoparticles
#10
Qing Sun, Weifeng Li, Huani Li, Xiumei Wang, Yu Wang, Xiaofeng Niu
AIM: This study was designed to develop sanguinarine-loaded solid lipid nanoparticles (SG-SLNs) and investigate its gastroprotective effect on ethanol-induced gastric mucosal lesions in mice. METHODS: SG-SLNs were prepared by high temperature melt-cool solidification method using glycerol monostearate as the lipid and a combination of lecithin with poloxamer 188 as the surfactants. Solid lipid nanoparticles (SLNs) were designed at varying lipid concentrations (5, 10, 15, and 20 mg/mL), surfactant mixture concentrations (6, 12, and 18 mg/mL), and drug contents (5, 10, 15, and 20 mg/mL) in "one factor at a time" fashion...
March 24, 2017: Pharmacology
https://www.readbyqxmd.com/read/28333905/-the-inflammatory-processes-in-atherogenesis
#11
Natalia Cichoń, Dominika Lach, Angela Dziedzic, Michał Bijak, Joanna Saluk
Atherogenesis is the process of atherosclerotic plaque formation, leading to coronary artery heart disease. This process involves immune cells, mainly T and B cells, monocytes and macrophages. The process of atherogenesis is induced by inflammatory damage of endothelial cells. The characteristic construction features of the atherosclerotic plaque is a predisposing factor for acute coronary syndromes. The accumulation of inflammatory cells in the artery inner membrane enhances the local inflammatory process due to the secretion of reactive oxygen species, inflammatory cytokines and metalloproteinases, which accelerate the development of atherosclerotic lesions in the arteries...
March 21, 2017: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28333899/-stem-progenitor-cells-in-diseases-of-the-respiratory-tract
#12
EDITORIAL
Tadeusz Płusa
Stem cells (SCs - stem cells) are characterized by plasticity and the ability to differentiate into other cell types. They are obtained from bone marrow, peripheral blood and cord blood. Mesenchymal stem cells (MSCs) shows a broad immunomodulating, increases the number of regulatory T cells (Treg), modifies the activity of T cells, dendritic cells and NK (natural killer). Direct impact on reducing the release of proinflammatory cytokines and increased release of proinflammatory cytokines. Within the respiratory tract has a number of resident stem and progenitor cells referred to as L-MSCs (lung mesenchymal stem cells) whose presence was confirmed by markers as defined in the trachea, epithelial cells and alveolar...
March 21, 2017: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28333757/the-septic-shock-3-0-definition-and-trials-a-vasopressin-and-septic-shock-trial-experience
#13
James A Russell, Terry Lee, Joel Singer, John H Boyd, Keith R Walley
OBJECTIVES: The Septic Shock 3.0 definition could alter treatment comparisons in randomized controlled trials in septic shock. Our first hypothesis was that the vasopressin versus norepinephrine comparison and 28-day mortality of patients with Septic Shock 3.0 definition (lactate > 2 mmol/L) differ from vasopressin versus norepinephrine and mortality in Vasopressin and Septic Shock Trial. Our second hypothesis was that there are differences in plasma cytokine levels in Vasopressin and Septic Shock Trial for lactate less than or equal to 2 versus greater than 2 mmol/L...
March 22, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28333715/noninvasive-imaging-of-stored-red-blood-cell-transfusion-aggravating-sepsis-induced-liver-injury-associated-with-increased-activation-of-m1-polarized-kupffer-cells
#14
Tao Wu, Lei Wang, Jie An, Chao Y Wu, Yue Wang, Lu Qian, Jun Zhou, Yu L Zhang, Qian Q Zhou, Xiao H Wang, Hua F Wang, Qiu X Fu, Lin S Zhan
Liver injury has a critical effect on the severity and outcome of sepsis. The impact of stored RBCs on the pathogenesis of sepsis-associated hepatic injury is not well understood. Therefore, to investigate the effects of stored-RBC transfusion on sepsis-induced liver damage as well as the associated mechanism, we constructed a sepsis mouse model enabling non-invasive imaging of bacterial infection caused by Pseudomonas aeruginosa, a common gram-negative respiratory pathogen. We showed that transfusions with stored RBCs enhanced sepsis-induced liver injury in vivo, and liver injury exacerbated the severity of sepsis and decreased survival in P...
March 22, 2017: Shock
https://www.readbyqxmd.com/read/28333699/biomarker-of-extracellular-matrix-remodelling-c1m-and-proinflammatory-cytokine-il-6-are-related-to-synovitis-and-pain-in-endstage-knee-osteoarthritis-patients
#15
Maja R Radojčić, Christian S Thudium, Kim Henriksen, Keith Tan, Rolf Karlsten, Amanda Dudley, Iain Chessell, Morten A Karsdal, Anne-Christine Bay-Jensen, Michel D Crema, Ali Guermazi
Little is known about local and systemic biomarkers in relation to synovitis and pain in end-stage osteoarthritis (OA) patients. We investigated the associations between the novel extracellular matrix biomarker, C1M, and local and systemic interleukin 6 (IL-6) with synovitis and pain. Serum C1M, plasma and synovial fluid IL-6 (p-IL-6, sf-IL-6) were measured in 104 end-stage knee OA patients. Contrast-enhanced magnetic resonance imaging (MRI) was used to semi-quantitatively assess an 11-point synovitis score; pain was assessed by the Western Ontario & McMaster Universities Osteoarthritis Index (WOMAC) and the Neuropathic Pain Questionnaire (NPQ)...
March 22, 2017: Pain
https://www.readbyqxmd.com/read/28333693/pediatric-intestinal-failure-associated-liver-disease
#16
Cathleen M Courtney, Brad W Warner
PURPOSE OF REVIEW: The goal of this review is to provide updates on the definition, pathophysiology, treatment, and prevention of intestinal failure-associated liver disease (IFALD) that are relevant to care of pediatric patients. RECENT FINDINGS: Current literature emphasizes the multifactorial nature of IFALD. The pathogenesis is still largely unknown; however, molecular pathways have been identified. Key to these pathways are proinflammatory cytokines involved in hepatic inflammation and bile acids synthesis such as Toll-like receptor 4 and farnesoid X receptor, respectively...
March 22, 2017: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/28333654/cytokine-changes-in-gastric-and-colonic-epithelial-cell-in-response-to-planta-ovata-extract
#17
Javed Yakoob, Wasim Jafri, Malik Hassan Mehmood, Zaigham Abbas, Kanwal Tariq
Background Psyllium (Planta ovata, Ispaghul) seed and husk are used for treatment of altered bowel habit, i. e. constipation and diarrhea. We studied the effect of Ispaghul extract on secretion of interleukin-1 beta (IL-1β) by AGS (ATCC CRL 1739) and SW480 (ATCC CCL-227) epithelial cell lines and determined whether Ispaghul extract has an effect on IL-1β secretion by Helicobacter pylori (H. pylori)-stimulated AGS cell and Escherichia coli K-12 (E. coli K-12)-stimulated SW480 cells in vitro. Methods The AGS cells and SW480 cells were pretreated with Ispaghul extract in concentrations, i...
March 22, 2017: Journal of Complementary & Integrative Medicine
https://www.readbyqxmd.com/read/28333574/cytosolic-nucleic-acid-sensors-and-innate-immune-regulation
#18
Daisuke Ori, Motoya Murase, Taro Kawai
During viral and bacterial infections, pathogen-derived cytosolic nucleic acids are recognized by the intracellular RNA sensors retinoic acid-inducible gene I and melanoma-differentiated gene 5 and intracellular DNA sensors, including cyclic-di-GMP-AMP synthase, absent in melanoma 2, interferon (IFN)-gamma inducible protein 16, polymerase III, and so on. Binding of intracellular nucleic acids to these sensors activates downstream signaling cascades, resulting in the production of type I IFNs and pro-inflammatory cytokines to induce appropriate systematic immune responses...
March 23, 2017: International Reviews of Immunology
https://www.readbyqxmd.com/read/28333382/regulation-and-function-of-extracellular-nicotinamide-phosphoribosyltransferase-visfatin
#19
Federico Carbone, Luca Liberale, Aldo Bonaventura, Alessandra Vecchiè, Matteo Casula, Michele Cea, Fiammetta Monacelli, Irene Caffa, Santina Bruzzone, Fabrizio Montecucco, Alessio Nencioni
Nicotinamide phosphoribosyltransferase (NAMPT) is an adipokine-enzyme, which was described as to play bioactivities both in the intracellular and in the extracellular environment. However, while the functions of intracellular NAMPT (iNAMPT) are well known, much less is known on extracellular NAMPT (eNAMPT), also called visfatin or pre-B cell colony-enhancing factor. iNAMPT catalyzes the rate-limiting step in the NAD+ biosynthesis pathway from nicotinamide. Its inhibition severely reduces intracellular NAD+ levels, achieving anti-inflammatory and anti-cancer effects...
March 16, 2017: Comprehensive Physiology
https://www.readbyqxmd.com/read/28333279/inhibition-of-pim1-kinase-attenuates-inflammation-induced-pro-labour-mediators-in-human-fetal-membranes-in-vitro
#20
Ratana Lim, Gillian Barker, Martha Lappas
STUDY QUESTION: Does proviral integration site for Moloney murine leukemic virus (PIM)1 kinase play a role in regulating the inflammatory processes of human labour and delivery? SUMMARY ANSWER: PIM1 kinase plays a critical role in fetal membranes in regulating pro-inflammatory and pro-labour mediators. WHAT IS KNOWN ALREADY: Infection and inflammation have strong causal links to preterm delivery by stimulating pro-inflammatory cytokines and collagen degrading enzymes, which can lead to rupture of membranes...
March 9, 2017: Molecular Human Reproduction
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