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https://www.readbyqxmd.com/read/28433998/interferon-%C3%AE-1a-modulates-expression-of-rage-but-not-s100a12-and-nuclear-factor-%C3%AE%C2%BAb-in-multiple-sclerosis-patients
#1
Gholamreza Asadikaram, Saam Noroozi, Hossein Ali Ebrahimi Meimand, Mojgan Sanjari, Nahid Zainodini, Hossein Khoramdelazad, Nader Shahrokhi, Mohammad Kazemi Arababadi
OBJECTIVES: Interferon-β 1a (IFN-β 1a) is a common strategy therapy for multiple sclerosis (MS) with unknown mechanisms. S100A12 (S100 calcium-binding protein A12) is a damage-associated molecular pattern molecule which binds to its receptor, RAGE (receptor for advanced glycation end products), and activates nuclear factor-κB (NF-κB). NF-κB is transcribed from proinflammatory molecules, which may participate in the pathogenesis of MS. Therefore, the aims of this study were to compare mRNA levels of S100A12, RAGE, and NF-κB in newly diagnosed MS patients with healthy controls and determine whether IFN-β 1a therapy affects the expression of the molecules...
April 22, 2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/28433571/antitumor-and-chemosensitizing-action-of-3-bromopyruvate-implication-of-deregulated-metabolism
#2
Saveg Yadav, Shrish Kumar Pandey, Ajay Kumar, Praveen Kumar Kujur, Rana Pratap Singh, Sukh Mahendra Singh
3-Bromopyruvate (3-BP), brominated derivative of pyruvate, possesses strong antitumor potential, owing to its ability to inhibit multiple target molecules crucial for survival of neoplastic cells. Although, 3-BP displays cytotoxicity against a wide variety of tumors, there is no report with respect to malignancies of thymic origin. Therefore, we investigated its antineoplastic action in vitro against tumor cells of a murine transplantable lymphoma of thymoma origin, designated as Dalton's lymphoma (DL). 3-BP treatment of tumor cells inhibited metabolism and survival with augmented induction of apoptosis and necrosis...
April 19, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28433429/immunological-function-of-langerhans-cells-in-hiv-infection
#3
Takamitsu Matsuzawa, Youichi Ogawa, Kohji Moriishi, Shinji Shimada, Tatsuyoshi Kawamura
BACKGROUND: Langerhans cells (LCs) are one of the initial target cells for HIV following sexual exposure and they are productively infected by HIV. HIV-infected LCs migrate to the draining lymph nodes (dLNs) and transmit the virus to CD4(+) T cells, leading to the dissemination of HIV. In contrast with the role of LCs in initial HIV acquisition, little is known about the modulation of immune responses by HIV-infected LCs. OBJECTIVE: We aimed to elucidate the induction of HIV-specific CD8(+) T cells and regulatory T cells (Tregs), both of which play important roles in regulating the progression of HIV infection...
April 9, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28433374/peritoneal-fluid-cytokines-related-to-endometriosis-in-patients-evaluated-for-infertility
#4
Hilde Jørgensen, Abby S Hill, Michael T Beste, Manu P Kumar, Evan Chiswick, Peter Fedorcsak, Keith B Isaacson, Douglas A Lauffenburger, Linda G Griffith, Erik Qvigstad
OBJECTIVE: Our aim was to characterize peritoneal cytokine profiles in patients with infertility, with and without endometriosis, to illuminate potential differences in immune profiles that may reflect mechanistic differences between these two patient populations. DESIGN: Cross-sectional study. SETTING: University hospital and research center. PATIENT(S): Women undergoing laparoscopy for infertility investigation (n = 107)...
April 19, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28432927/type-2-bvdv-n-pro-suppresses-ifn-1-pathway-signaling-in-bovine-cells-and-augments-brsv-replication
#5
Abdulrahman A Alkheraif, Christina L Topliff, Jay Reddy, Chandirasegaran Massilamany, Ruben O Donis, Gregor Meyers, Kent M Eskridge, Clayton L Kelling
Bovine viral diarrhea virus (BVDV) infection induces immunosuppression and in conjunction with bovine respiratory syncytial virus (BRSV) contributes to the bovine respiratory disease complex. Bovine turbinate cells were single or co-infected with type 2 BVDV wild-type (BVDV2-wt), its dysfunctional N(pro) mutant (BVDV2-E), and/or BRSV. BVDV2-E significantly up-regulated PKR, IRF-7, TBK-1, IRF-3, and IFN-β mRNAs based on real-time Q-RT-PCR. BRSV-infected cells expressed significantly up-regulated PKR, IRF-3, IRF-7, and IFN-β mRNAs, whereas BVDV2-wt, but not BVDV2-E, abolished this up-regulation in co-infection...
April 19, 2017: Virology
https://www.readbyqxmd.com/read/28432833/cellular-and-humoral-immunity-after-vaccination-or-natural-infection-of-mumps
#6
Kihei Terada, Kimiko Hagihara, Tomohiro Oishi, Ippei Miyata, Hiroto Akaike, Satoko Ogita, Naoki Ohno, Kazunobu Ouchi
OBJECTIVE: This study measured cell-mediated immunity (CMI) and serum antibody levels to clarify the basis of breakthrough after vaccination and reinfection after mumps. METHODS: From a pool of 54 college students, 17 seronegative subjects and 14 subjects with intermediate levels of antibodies against mumps were vaccinated with a monovalent mumps vaccine and CMI was assessed using an interferon-γ release assay. RESULTS: CMI positivity in subjects classified by pre-existing antibody levels, which gave groups with titers of <2...
April 22, 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/28432527/effects-of-agaricus-blazei-murill-polysaccharide-on-cadmium-poisoning-on-the-mda5-signaling-pathway-and-antioxidant-function-of-chicken-peripheral-blood-lymphocytes
#7
Ai Lv, Ming Ge, Xuequan Hu, Wenjing Liu, Guangxing Li, Ruili Zhang
This experimental study investigated the effect of Agaricus blazei Murill polysaccharide (ABP) on cadmium (Cd) poisoning on the melanoma differentiation-associated gene 5 (MDA5) signaling pathway and antioxidant function of peripheral blood lymphocytes (PBLs) in chickens. The experiments were divided into four groups: 7-day-old chickens with normal saline (0.2 mL single/day), Cd (140 mg/kg), ABP (30 mg/mL, 0.2 mL single/day), and Cd + ABP(140 mg/kg/day + 0.2 mL ABP). Peripheral blood was collected on the 20th, 40th, and 60th days for each group, and PBLs were separated...
April 21, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28432524/correlation-of-serum-mmp3-and-other-biomarkers-with-clinical-outcomes-in-patients-with-ankylosing-spondylitis-a-pilot-study
#8
Dongyi He, Qi Zhu, Quan Zhou, Qing Qi, Hongmei Sun, Liza M Zachariah, Grace Wang, John D Reveille, Yongtao Guan, Xiaodong Zhou
The studies aimed to assess a set of biomarkers for their correlations with disease activity/severity of patients with ankylosing spondylitis (AS). A total of 24 AS patients were treated with etanercept and prospectively followed for 12 weeks. Serum levels of TNF-α, IFN-γ, TGF-β, IL6, IL15, IL17, MMP3, and MICA were measured at baseline and after treatment. The change of these biomarkers was analyzed for correlations with MRI indices for joint inflammation, Bath Ankylosing Spondylitis Disease Activity Index, Bath Ankylosing Spondylitis Functional Index, AS Disease Activity Score, serum CRP, and ESR...
April 22, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28432378/advances-in-anti-viral-immune-defence-revealing-the-importance-of-the-ifn-jak-stat-pathway
#9
REVIEW
Nicola Raftery, Nigel J Stevenson
Interferon-alpha (IFN-α) is a potent anti-viral cytokine, critical to the host immune response against viruses. IFN-α is first produced upon viral detection by pathogen recognition receptors. Following its expression, IFN-α embarks upon a complex downstream signalling cascade called the JAK/STAT pathway. This signalling pathway results in the expression of hundreds of effector genes known as interferon stimulated genes (ISGs). These genes are the basis for an elaborate effector mechanism and ultimately, the clearance of viral infection...
April 21, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28432149/cd73-on-t-cells-orchestrates-cardiac-wound-healing-after-myocardial-infarction-by-purinergic-metabolic-reprogramming
#10
Nadine Borg, Christina Alter, Nicole Görldt, Christoph Jacoby, Zhaoping Ding, Bodo Steckel, Christine Quast, Florian Bönner, Daniela Friebe, Sebastian Temme, Ulrich Flögel, Jürgen Schrader
Background -T-cells are required for proper healing after myocardial infarction. The mechanism of their beneficial action, however, is unknown. The pro-inflammatory "danger signal" adenosine triphosphate (ATP), released from damaged cells, is degraded by the ectonucleotidases CD39 and CD73 to the anti-inflammatory mediator adenosine. Here, we investigate the contribution of CD73-derived adenosine produced by T-cells to cardiac remodeling after ischemia/reperfusion and define its mechanism of action. Methods -Myocardial ischemia (50 min /reperfusion) was induced in global CD73(-/-) and CD4-CD73(-/-) mice...
April 21, 2017: Circulation
https://www.readbyqxmd.com/read/28432122/dual-regulation-of-stat1-and-stat3-by-the-tumor-suppressor-protein-pml-contributes-to-ifn%C3%AE-mediated-inhibition-of-angiogenesis
#11
Kuo-Sheng Hsu, Xuan Zhao, Xiwen Cheng, Dongyin Guan, Ganapati H Mahabeleshwar, Yu Liu, Ernest Borden, Mukesh K Jain, Hung-Ying Kao
IFNs are effective in inhibiting angiogenesis in preclinical models and in treating several angio-proliferative disorders. However, the detailed mechanisms of IFNα-mediated anti-angiogenesis are not completely understood. Stat1/2/3 and PML are IFNα downstream effectors and are pivotal regulators of angiogenesis. Here, we investigated PML's role in the regulation of Stat1/2/3 activity. In Pml knockout (KO) mice, ablation of Pml largely reduces IFNα angiostatic ability in Matrixgel plug assays. This suggested an essential role for PML in IFNα's anti-angiogenic function...
April 21, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28432083/optimal-cd4-t-cell-priming-after-lps-based-adjuvanticity-with-cd134-costimulation-relies-on-cxcl9-production
#12
Paurvi Shinde, Wenhai Liu, Antoine Ménoret, Andrew D Luster, Anthony T Vella
LPS is a powerful adjuvant, and although LPS-mediated TLR4 signaling has been exquisitely delineated, the in vivo mechanism of how TLR4 responses impact T cell priming is far less clear. Besides costimulation, TNF and type 1 IFN are dominant cytokines released after TLR4 activation and can shape T cell responses, but other downstream factors have not been examined extensively. Depending on context, we show that IFNαR1 blockade resulted in minor to major effects on specific CD4 T cell clonal expansion. To help explain these differences, it was hypothesized that IFNαR1 blockade would inhibit specific T cell migration by reducing chemokine receptor signaling, but specific CD4 T cells from IFNαR1-blocked mice were readily able to migrate in response to specific chemokines...
April 21, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28432035/expression-of-pattern-recognition-receptors-and-activation-of-the-non-canonical-inflammasome-pathway-in-brain-pericytes
#13
Ádám Nyúl-Tóth, Mihály Kozma, Péter Nagyőszi, Krisztina Nagy, Csilla Fazakas, János Haskó, Kinga Molnár, Attila E Farkas, Attila G Végh, György Váró, Péter Galajda, Imola Wilhelm, István A Krizbai
Cerebral pericytes are mural cells embedded in the basement membrane of capillaries. Increasing evidence suggests that they play important role in controlling neurovascular functions, i.e. cerebral blood flow, angiogenesis and permeability of the blood-brain barrier. These cells can also influence neuroinflammation which is highly regulated by the innate immune system. Therefore, we systematically tested the pattern recognition receptor expression of brain pericytes. We detected expression of NOD1, NOD2, NLRC5, NLRP1-3, NLRP5, NLRP9, NLRP10 and NLRX mRNA in non-treated cells...
April 18, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28431813/evaluation-of-immune-responses-of-stabilised-sat2-antigens-of-foot-and-mouth-disease-in-cattle
#14
Katherine A Scott, N M Rathogwa, A V Capozzo, Francois F Maree
Foot-and-mouth disease (FMD) vaccines with improved stability and less reliant on a cold-chain are needed to improve the longevity of immune responses elicited in animals. This is especially so for serotypes O and SAT2 which are unstable in mildly acidic pH conditions or at elevated temperatures leading to dissociation of the capsid (146S particle) and loss of immunogenicity. Previously, stabilised SAT2 viruses were generated by reverse genetic approaches and assessed in vitro and in vivo with a guinea pig trial...
April 18, 2017: Vaccine
https://www.readbyqxmd.com/read/28431214/interferon-%C3%AE-released-by-activated-cd8-t-lymphocytes-impairs-the-calcium-resorption-potential-of-osteoclasts-in-calcified-human-aortic-valves
#15
Edit Nagy, Yang Lei, Eduardo Martínez-Martínez, Simon C Body, Florian Schlotter, Michael Creager, Alexander Assmann, Kamal Khabbaz, Peter Libby, Göran K Hansson, Elena Aikawa
Calcium content in patients with calcific aortic valve disease (CAVD) correlates with the severity of stenosis. In CAVD, activated T lymphocytes localize with osteoclast regions; however, the functional consequences of this association remain unknown. We hypothesized that CD8(+) T cells modulate calcification in CAVD. Explanted CAVD valves (n = 52) dissected into noncalcified and calcified portions were subjected to mRNA extraction, real-time quantitative PCR, enzyme-linked immunosorbent assay, and immunohistochemical analyses...
April 18, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28431019/identifying-cytomegalovirus-cmv-complications-using-the-quantiferon-cmv-assay-after-allogeneic-hematopoietic-stem-cell-transplantation
#16
Michelle K Yong, Paul U Cameron, Monica Slavin, C Orla Morrissey, Krystal Bergin, Andrew Spencer, David Ritchie, Allen C Cheng, Assia Samri, Guislaine Carcelain, Brigitte Autran, Sharon R Lewin
Background: Cytomegalovirus (CMV) reactivation and disease remain a major cause of morbidity and mortality in hematopoietic stem cell transplant (HSCT) recipients. A simple test to identify recovery of CMV-specific T-cell immunity could assist clinicians in managing CMV-related complications. Methods: In an observational multi-centre prospective study of 94 allogeneic HSCT recipients we evaluated CMV-specific T-cell immunity at baseline, 3, 6, 9 and 12 months post-transplant using the Quantiferon-CMV®, an ELISpot assay and in a subset, we also evaluated intracellular cytokine staining (ICS)...
April 18, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28431010/clinical-trial-of-the-anti-pd-l1-antibody-bms-936559-in-hiv-1-infected-participants-on-suppressive-antiretroviral-therapy
#17
Cynthia L Gay, Ronald J Bosch, Justin Ritz, Jason M Hataye, Evgenia Aga, Randall L Tressler, Stephen W Mason, Carey K Hwang, Dennis M Grasela, Neelanjana Ray, Josh C Cyktor, John M Coffin, Edward P Acosta, Richard A Koup, John W Mellors, Joseph J Eron
Background.: Reversing immune exhaustion with an anti-PD-L1 antibody may improve HIV-1-specific immunity and increase clearance of HIV-1 expressing cells. Methods.: Phase I, randomized, double-blind, placebo-controlled dose-escalating study of BMS-936559including HIV-1-infected adults ≥18 to ≤70 years on suppressive antiretroviral therapy with CD4+ counts ≥350 cells/μL and detectable plasma HIV-1 RNA by single copy assay. Data on single infusions of BMS-936559 (0...
April 18, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28430999/repurposing-quantiferon-for-detection-of-neutralizing-ifn-%C3%AE-autoantibodies-in-patients-with-nontuberculous-mycobacterial-infections
#18
Isabelle Suárez, Clara Lehmann, Henning Gruell, Jessica Graeb, Matthias Kochanek, Gerd Fätkenheuer, Georg Plum, Annelies van Wengen, Esther van de Vosse, Pia Hartmann, Leif G Hanitsch, Jan Rybniker
Nontuberculous mycobacterial (NTM) infections due to autoantibodies targeting IFN-γ are an emerging medical problem. However, case finding is hampered due to highly complex diagnostic procedures not available in routine laboratories. We show that QuantiFERON assays can be exploited as a simple screening tool that may facilitate adequate and timely treatment.
April 20, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28430750/elevated-immune-response-among-children-4-years-of-age-with-pronounced-local-adverse-events-after-the-fifth-dtap-vaccination
#19
Saskia van der Lee, Jeanet M Kemmeren, Lia G H de Rond, Kemal Öztürk, Anneke Westerhof, Hester E de Melker, Elisabeth A M Sanders, Guy A M Berbers, Nicoline A T van der Maas, Hans C Rümke, Anne-Marie Buisman
BACKGROUND: In the Netherlands, acellular pertussis vaccines replaced the more reactogenic whole-cell pertussis vaccines. This replacement in the primary immunization schedule of infants coincided with a significant increase in pronounced local adverse events (AEs) in 4 years old children shortly after the administration of a fifth diphtheria, tetanus, acellular pertussis and inactivated polio (DTaP-IPV) vaccine. The objective of this study was to investigate possible differences in vaccine antigen-specific immune responses between children with and without a pronounced local AE after the fifth DTaP-IPV vaccination...
April 19, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28430710/angiotensin-converting-enzyme-insertion-deletion-gene-polymorphism-and-interferon-%C3%AE-treatment-response-in-multiple-sclerosis-patients-a-preliminary-report
#20
Smiljana Ristić, Nada Starčević Čizmarević, Polona Lavtar, Luca Lovrečić, Olivio Perković, Juraj Sepčić, Saša Šega Jazbec, Miljenko Kapović, Borut Peterlin
We investigated the effect of the functional insertion/deletion (I/D) polymorphism in the angiotensin-converting enzyme (ACE) gene on the response to interferon-β (IFN-β) therapy in Croatian and Slovenian patients with multiple sclerosis (MS). A total of 275 IFN-β treated MS patients [162 responders (Rs) and 113 nonresponders (NRs)] were genotyped by PCR. The ACE I/D genotype distribution and allele frequencies did not differ between female Rs and NRs. However, male NRs tended to have a greater prevalence of the DD genotype (P=0...
April 20, 2017: Pharmacogenetics and Genomics
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