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https://www.readbyqxmd.com/read/29204085/immune-complex-negatively-regulates-toll-like-receptor-3-triggered-tumour-necrosis-factor-%C3%AE-production-in-b-cells
#1
Li Qian, Wenyan Chen, Shaoqing Wang, Yang Liu, Xiaoqin Jia, Yi Fu, Weijuan Gong, Fang Tian
Inappropriate activation of toll-like receptor 3 (TLR3) has been implicated in the pathogenesis of autoimmune diseases, so the negative regulation of TLR3-triggered immune response has received increasing attention. Nonpathogenic immune complex (IC) has been used as treatment for many inflammatory and autoimmune diseases. However, the role of IC in the regulation of TLR3-triggered immune responses and the underlying mechanisms need to be investigated. In this study we demonstrate that IC or intravenous immunoglobulin (Ig) stimulation of B cells attenuates polyinosinic:polycytidylic acid (poly I:C)-induced CD40 expression; IC, but not Ig, can significantly inhibit poly I:C-induced pro-inflammatory tumour necrosis factor α (TNF-α) production by B cells...
2017: Central-European Journal of Immunology
https://www.readbyqxmd.com/read/29166644/cylindromatosis-cyld-a-deubiquitinase-attenuates-inflammatory-signaling-pathways-by-activating-toll-like-receptor-3-in-human-mesangial-cells
#2
Tadaatsu Imaizumi, Ryo Hayakari, Shojiro Watanabe, Tomomi Aizawa, Tomoh Matsumiya, Hidemi Yoshida, Kazushi Tsuruga, Shogo Kawaguchi, Hiroshi Tanaka
BACKGROUND/AIMS: Cylindromatosis (CYLD), a deubiquitinase, negatively regulates nuclear factor-κB in various cells. However, its potential roles in glomerular inflammation remain unclear. Because the activation of the Toll-like receptor 3 (TLR3)/type I interferon (IFN) pathways plays a pivotal role in chronic kidney diseases (CKD), we examined the role of CYLD in the TLR3 signaling in cultured human mesangial cells (MCs). METHODS: We stimulated CYLD-silenced MCs with polyinosinic-polycytidylic acid (poly IC), a synthetic analogue of dsRNA, and studied representative TLR3/IFN-β pathways (i...
November 22, 2017: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/29130803/steroid-sparing-effect-of-sublingual-immunotherapy-real-life-study-in-mono-polisensitized-children-with-asthma
#3
Nerin Nadir Bahceciler, Nilufer Galip, Arzu Babayigit
AIM: Steroid-sparing effect of sublingual immunotherapy (SLIT) in mono/polisensitized asthmatic children were evaluated. MATERIALS AND METHODS:  Children undergoing allergen-specific SLIT between 2010 and 2014 were included. Asthma control and usage/dose of inhaled corticosteroid (ICS) in the previous year was determined. Asthma control without ICS need ≥6 months was defined as 'ICS avoidance'. RESULTS:  90 children (mean ± SD age 8...
November 2017: Immunotherapy
https://www.readbyqxmd.com/read/29128386/a-pilot-study-of-endoscopically-inserted-biodegradable-biliary-stents-in-the-treatment-of-benign-biliary-strictures-and-cystic-duct-leaks
#4
Antti Siiki, Irina Rinta-Kiikka, Juhani Sand, Johanna Laukkarinen
BACKGROUND AND AIMS: Self-expanding biodegradable biliary stents (BDBSs) have recently become available for use in endoscopic retrograde cholangiography (ERC). The aim was to evaluate the effectiveness and safety of novel BDBS in iatrogenic cystic duct leaks and benign biliary strictures (BBSs). MATERIALS AND METHODS: Patients providing informed consent were recruited for the prospective study. Braided self-expanding poly-dioxanone BDBSs were inserted in ERC during the period 2012 to 2016...
November 8, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/29127663/poly-i-c-priming-exacerbates-cecal-ligation-and-puncture-induced-polymicrobial-sepsis-in-mice
#5
Deepika Sharma, Ankit Malik, Nandakumar Packiriswamy, Michael D Steury, Narayanan Parameswaran
Sepsis continues to be a major healthcare issue with one of the highest mortality rates in intensive care units. Toll-like receptors are pattern recognition receptors that are intricately involved in the pathogenesis of sepsis. TLR3 is a major receptor for double-stranded RNA and is largely associated with immunity to viral infection. In this study, we examined the role of TLR3 priming in the immunopathology of sepsis using cecal-ligation and puncture (CLP) model of sepsis in mice. Mice injected with vehicle or poly(I:C) were subjected to sham or CLP surgery and various parameters of sepsis, including mortality, inflammation, and bacterial clearance were assessed...
November 10, 2017: Inflammation
https://www.readbyqxmd.com/read/29111062/plasma-treated-poly-ethylene-oxide-nanofibers-containing-tea-tree-oil-beta-cyclodextrin-inclusion-complex-for-antibacterial-packaging
#6
Haiying Cui, Mei Bai, Lin Lin
This work describes the effect of cold nitrogen plasma to enhance the antibacterial activity of poly(ethylene oxide) (PEO) nanofibers containing antibacterial agent. Beta-cyclodextrin (β-CD) and tea tree oil (TTO) were used as a host-guest to form water-soluble inclusion complex. The encapsulation efficiency of TTO in inclusion complex could reach 73.23% at 60°C. As antibacterial agent, the inclusion complex was encapsulated into PEO matrix by electrospun. After plasma treatment, the release efficiency of antibacterial agent from PEO nanofibers was improved...
January 1, 2018: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29073183/adjuvants-and-the-vaccine-response-to-the-ds-cav1-stabilized-fusion-glycoprotein-of-respiratory-syncytial-virus
#7
Mallika Sastry, Baoshan Zhang, Man Chen, M Gordon Joyce, Wing-Pui Kong, Gwo-Yu Chuang, Kiyoon Ko, Azad Kumar, Chiara Silacci, Michelle Thom, Andres M Salazar, Davide Corti, Antonio Lanzavecchia, Geraldine Taylor, John R Mascola, Barney S Graham, Peter D Kwong
Appropriate adjuvant selection may be essential to optimize the potency and to tailor the immune response of subunit vaccines. To induce protective responses against respiratory syncytial virus (RSV)-a highly prevalent childhood pathogen without a licensed vaccine-we previously engineered a pre-fusion-stabilized trimeric RSV F (pre-F) "DS-Cav1" immunogen, which induced high titer RSV-neutralizing antibodies, in mice and non-human primates, when formulated with adjuvants Poly (I:C) and Poly (IC:LC), respectively...
2017: PloS One
https://www.readbyqxmd.com/read/29070776/ccl5-is-induced-by-tlr-3-signaling-in-hucct1-human-biliary-epithelial-cells-possible-involvement-in-the-pathogenesis-of-biliary-atresia
#8
Taku Shimada, Tadaatsu Imaizumi, Kyogo Shirai, Tetsuya Tatsuta, Toshiro Kimura, Ryo Hayakari, Hidemi Yoshida, Tomoh Matsumiya, Hiroshi Kijima, Hiroki Mizukami, Kenichi Hakamada
Biliary atresia (BA) is a disease of the newborn that is characterized by progressive, inflammatory and sclerosing cholangiopathy. Innate immune responses to viral components are thought to be involved in the pathogenesis of BA. It is also reported that some chemokines, such as CCL5, are possibly involved in the pathogenesis of experimental animal model of BA. We treated human biliary epithelial HuCCT1 cells with polyinosinic-polycytidylic acid (poly IC), an authentic double-stranded RNA (dsRNA) which mimics viral RNA, and analyzed the CCL5 expression by quantitative reverse transcription-PCR (qRT-PCR) and enzyme-linked immunosorbent assay (ELISA)...
2017: Biomedical Research
https://www.readbyqxmd.com/read/29066896/aminated-nanomicelles-as-a-designer-vaccine-adjuvant-to-trigger-inflammasomes-and-multiple-arms-of-the-innate-immune-response-in-lymph-nodes
#9
Chanyoung Song, Hathaichanok Phuengkham, Sun-Young Kim, Min Sang Lee, Ji Hoon Jeong, Sung Jae Shin, Yong Taik Lim
In this study, we suggest a designer vaccine adjuvant that can mimic the drainage of pathogens into lymph nodes and activate innate immune response in lymph nodes. By the amination of multivalent carboxyl groups in poly-(γ-glutamic acid) (γ-PGA) nanomicelles, the size was reduced for rapid entry into lymphatic vessels, and the immunologically inert nanomicelles were turned into potential activators of inflammasomes. Aminated γ-PGA nanomicelles (aPNMs) induced NLRP3 inflammasome activation and the subsequent release of proinflammatory IL-1β...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29050282/effective-antitumor-peptide-vaccines-can-induce-severe-autoimmune-pathology
#10
Hussein Sultan, Jimena Trillo-Tinoco, Paulo Rodriguez, Esteban Celis
Immunotherapy has shown a tremendous success in treating cancer. Unfortunately, this success is frequently associated with severe autoimmune pathology. In this study, we used the transgenic RIP-gp mouse model to assess the antitumor therapeutic benefit of peptide vaccination while evaluating the possible associated autoimmune pathology. We report that palmitoylated gp33-41 peptide and poly-IC adjuvant vaccine (BiVax) generated ∼ 5-10 % of antigen specific T cell responses in wild type and supposedly immune tolerant RIP-gp mice...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/28882807/atlantic-salmon-endothelial-cells-from-the-heart-were-more-susceptible-than-fibroblasts-from-the-bulbus-arteriosus-to-four-rna-viruses-but-protected-from-two-viruses-by-dsrna-pretreatment
#11
Phuc H Pham, Winnie W L Tong, Ehab Misk, Ginny Jones, John S Lumsden, Niels C Bols
Heart diseases caused by viruses are major causes of Atlantic salmon aquaculture loss. Two Atlantic salmon cardiovascular cell lines, an endothelial cell line (ASHe) from the heart and a fibroblast cell line (BAASf) from the bulbus arteriosus, were evaluated for their response to four fish viruses, CSV, IPNV, VHSV IVa and VHSV IVb, and the innate immune agonist, double-stranded RNA mimic poly IC. All four viruses caused cytopathic effects in ASHe and BAASf. However, ASHe was more susceptible to all four viruses than BAASf...
September 4, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28853490/interleukin-26-production-in-human-primary-bronchial-epithelial-cells-in-response-to-viral-stimulation-modulation-by-th17-cytokines
#12
Karlhans Fru Che, Riitta Kaarteenaho, Elisa Lappi-Blanco, Bettina Levänen, Jitong Sun, Åsa Wheelock, Lena Palmberg, C Magnus Sköld, Anders Lindén
Interleukin (IL)-26 is abundant in human airways and this cytokine is involved in the local immune response to a bacterial stimulus in vivo. Specifically, local exposure to the toll-like receptor (TLR) 4 agonist endotoxin does increase IL-26 in human airways and this cytokine potentiates chemotactic responses in human neutrophils. In addition to T-helper (Th) 17 cells, alveolar macrophages can produce IL-26, but it remains unknown whether this cytokine can also be produced in the airway mucosa per se in response to a viral stimulus...
August 29, 2017: Molecular Medicine
https://www.readbyqxmd.com/read/28818614/the-transcription-of-atypical-protein-kinase-c-in-hemocytes-of-the-giant-freshwater-prawn-macrobrachium-rosenbergii-during-the-molt-stage-and-injection-of-pathogen-associated-compounds
#13
Yi-Chun Yeh, Chin-Chyuan Chang, Pai-Po Lee, Winton Cheng
Protein kinase C (PKC), which is involved in cell signaling pathways, comprises a family of serine/threonine kinases ubiquitously present in animals and its members are grouped on the basis of structural and activation characteristics into novel, classical, and atypical PKC forms. In this study, an atypical PKC of Macrobrachium rosenbergii, designated MraPKC, was successfully cloned, and its protein comprised structural domains similar to those of atypical PKC homologues, including the Phox and Bem1 (PB1) domain, a zinc finger phorbol-ester/DAG-type signature, protein kinase signatures, and a cAMP-dependent, cGMP-dependent, and PKC (AGC) kinase C-terminal domain...
August 14, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28801807/hyaluronan-mediated-mononuclear-leukocyte-binding-to-gingival-fibroblasts
#14
Daniel Hagenfeld, Nico T Mutters, Inga Harks, Raphael Koch, Ti-Sun Kim, Peter Prehm
OBJECTIVES: Binding of mononuclear leukocytes to hyaluronan cable structures is a well-known pathomechanism in several chronic inflammatory diseases, but has not yet described for chronic oral inflammations. The aim of this study was to evaluate if and how binding of mononuclear leukocytes to pathologic hyaluronan cable structures can be induced in human gingival fibroblasts. MATERIAL AND METHODS: Experiments were performed with human gingival fibroblasts and peripheral blood mononuclear cells (PBMCs) from three healthy blood donors...
August 12, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28794402/dec1-negatively-regulates-the-expression-of-cxcl10-and-ccl5-induced-by-poly-ic-in-normal-human-mesangial-cells
#15
Qiang Liu, Tadaatsu Imaizumi, Keishu Murakami, Hiroshi Tanaka, Yunyan Wu, Tadashi Yoshizawa, Satoko Morohashi, Hiroko Seino, Hiroshi Kijima
The functions of differentiated embryonic chondrocyte gene (DEC) 1, a basic helix-loop-helix (bHLH) transcription factor, have been reported to be associated with the regulation of mammalian circadian rhythms, differentiation of chondrocytes and skeletal muscles, apoptosis, hypoxia-induced reactions and epithelial mesenchymal transition. Our previous report showed that another bHLH transcription factor DEC2 constitutes a negative feedback loop in Toll-like receptor 3 (TLR3)/interferon (IFN)-β-mediated inflammatory responses in human mesangial cells...
2017: Biomedical Research
https://www.readbyqxmd.com/read/28756288/production-of-rnase-iii-knockout-auxotrophic-edwardsiella-tarda-mutant-for-delivery-of-long-double-stranded-rna-and-evaluation-of-its-immunostimulatory-potential
#16
Min Sun Kim, Seung Hyuk Choi, Jeong In Yang, Ki Hong Kim
The artificially synthesized polyinosinic-polycytidylic acid (poly IC) has been widely used to induce type I IFN responses in various vertebrates including fish. However, as poly IC is too expensive to use in aquaculture, the development of another economical long dsRNA producing method is needed to practically use long dsRNAs in aquaculture farms for the control of infectious diseases. In the present study, to produce long dsRNAs economically, we developed a novel long dsRNA production system based on the RNase III gene deleted auxotrophic mutant E...
July 26, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28655692/an-interquartile-relationship-between-polyherbal-extract-based-lozenges-linkus-a-phase-iv-comparative-randomised-control-trial
#17
Hina Rehman, Syed Adnan Ali, Safila Naveed, Khan Usmanghani
The aim of the study is to determine the efficacy of polyherbal linkus with the other pharmaceutical marketed syrup having Acefyllin Piperazine, Diphenhydramine group and Aminophylline Diphenhydramine group on the basis of interquartile ranges on children. It was open label multi centric randomize control trial. The study was conducted on different private schools of East and West Malir, Karachi Pakistan with the special approval from the school's honors .informed consent and assents were taking before the enrollment of the study subjects ...
May 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28582300/analyzing-the-cost-of-autogenous-cranioplasty-versus-custom-made-patient-specific-alloplastic-cranioplasty
#18
Mohamed Amir Mrad, Khalid Murrad, Oleh Antonyshyn
PURPOSE: Comparing expenses related to autogenous cranial vault reconstruction versus custom-made patient-specific alloplastic cranioplasty. METHODS: The authors retrospectively reviewed charts of a group of patients who underwent autogenous cranioplasty and poly-ether-ether ketone (PEEK) cranioplasty. The data collected from the patient files included demographic information, details of the surgery, postoperative recovery data, and also duration of surgery. The authors also added costs related to the length of surgery, utilization of intensive care unit, length of hospital stay, amount and seriousness of complications, and hardware cost...
June 2, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28554201/a-benzylideneacetophenone-derivative-induces-apoptosis-of-radiation-resistant-human-breast-cancer-cells-via-oxidative-stress
#19
Jeong Eon Park, Mei Jing Piao, Kyoung Ah Kang, Kristina Shilnikova, Yu Jae Hyun, Sei Kwan Oh, Yong Joo Jeong, Sungwook Chae, Jin Won Hyun
Benzylideneacetophenone derivative (1E)-1-(4-hydroxy-3-methoxyphenyl) hept-1-en-3-one (JC3) elicited cytotoxic effects on MDA-MB 231 human breast cancer cells-radiation resistant cells (MDA-MB 231-RR), in a dose-dependent manner, with an IC50 value of 6 µM JC3. JC3-mediated apoptosis was confirmed by increase in sub-G1 cell population. JC3 disrupted the mitochondrial membrane potential, and reduced expression of anti-apoptotic B cell lymphoma-2 protein, whereas it increased expression of pro-apoptotic Bcl-2-associated X protein, leading to the cleavage of caspase-9, caspase-3 and poly (ADP-ribose) polymerase...
July 1, 2017: Biomolecules & Therapeutics
https://www.readbyqxmd.com/read/28537502/suitability-of-different-natural-and-synthetic-biomaterials-for-dental-pulp-tissue-engineering
#20
Kerstin M Galler, Ferdinand P Brandl, Susanne Kirchhof, Matthias Widbiller, Andreas Eidt, Wolfgang Buchalla, Achim Göpferich, Gottfried Schmalz
Dental pulp tissue engineering is possible after insertion of pulpal stem cells combined with a scaffold into empty root canals. Commonly used biomaterials are collagen or poly(lactic) acid, which are either difficult to modify or to insert into such a narrow space. New hydrogel scaffolds with bioactive, specifically tailored functions could optimize the conditions for this approach. Different synthetic and natural hydrogels were tested for their suitability to engineer dental pulp. Two functionalized modifications of polyethylene glycol were developed in this study and compared to a self-assembling peptide, as well as to collagen and fibrin...
July 20, 2017: Tissue Engineering. Part A
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