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immunogenicity TNF

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https://www.readbyqxmd.com/read/27908311/obesity-decreases-clinical-efficacy-and-levels-of-adalimumab-in-patients-with-ankylosing-spondylitis
#1
José Rosas, Francisca Llinares-Tello, José Miguel Senabre-Gallego, Xavier Barber-Vallés, Gregorio Santos-Soler, Esteban Salas-Heredia, Ana Pons Bas, Catalina Cano Pérez, Mario García-Carrasco
OBJECTIVES: Obesity can be a factor that affects response to anti-TNF drugs. However, studies on patients with ankylosing spondylitis (AS) are rare. We aimed to determine whether obesity affects serum levels of adalimumab (ADL), and immunogenicity and clinical efficacy of the drug in patients with AS. METHODS: A cross-sectional study on 57 patients with axial AS receiving ADL was conducted. They received DMARD per standard of care at their rheumatologist's discretion...
November 13, 2016: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/27890936/increased-proportion-of-mature-nk-cells-is-associated-with-successful-imatinib-discontinuation-in-chronic-myeloid-leukemia
#2
M Ilander, U Olsson-Strömberg, H Schlums, J Guilhot, O Brück, H Lähteenmäki, T Kasanen, P Koskenvesa, S Söderlund, M Höglund, B Markevärn, A Själander, K Lotfi, A Dreimane, A Lübking, E Holm, M Björeman, S Lehmann, L Stenke, L Ohm, T Gedde-Dahl, W Majeed, H Ehrencrona, S Koskela, S Saussele, F-X Mahon, K Porkka, H Hjorth-Hansen, Y T Bryceson, J Richter, S Mustjoki
Recent studies suggest that a proportion of chronic myeloid leukemia (CML) patients in deep molecular remission can discontinue the tyrosine kinase inhibitor (TKI) treatment without disease relapse. In this multi-center, prospective clinical trial (EURO-SKI, NCT01596114) we analyzed the function and phenotype of T and NK cells and their relation to successful TKI cessation. Lymphocyte subclasses were measured from 100 imatinib treated patients at baseline and 1 month after the discontinuation, and functional characterization of NK and T cells was done from 45 patients...
November 28, 2016: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/27866772/h1-ic31-vaccination-is-safe-and-induces-long-lived-tnf-%C3%AE-il-2-cd4-t-cell-responses-in-m-tuberculosis-infected-and-uninfected-adolescents-a-randomized-trial
#3
Helen Mearns, Hennie D Geldenhuys, Benjamin M Kagina, Munyaradzi Musvosvi, Francesca Little, Frances Ratangee, Hassan Mahomed, Willem A Hanekom, Søren T Hoff, Morten Ruhwald, Ingrid Kromann, Peter Bang, Mark Hatherill, Peter Andersen, Thomas J Scriba
BACKGROUND: Control of the tuberculosis epidemic requires a novel vaccine that is effective in preventing tuberculosis in adolescents, a key target population for vaccination against TB. METHODS: Healthy adolescents, stratified by M. tuberculosis-infection status, were enrolled into this observer-blinded phase II clinical trial of the protein-subunit vaccine candidate, H1:IC31, comprising a fusion protein (H1) of Ag85B and ESAT-6, formulated with the IC31 adjuvant...
November 17, 2016: Vaccine
https://www.readbyqxmd.com/read/27865390/alternative-bcg-delivery-strategies-improve-protection-against-mycobacterium-tuberculosis-in-non-human-primates-protection-associated-with-mycobacterial-antigen-specific-cd4-effector-memory-t-cell-populations
#4
S Sharpe, A White, C Sarfas, L Sibley, F Gleeson, A McIntyre, R Basaraba, S Clark, G Hall, E Rayner, A Williams, P D Marsh, M Dennis
Intradermal (ID) BCG injection provides incomplete protection against TB in humans and experimental models. Alternative BCG vaccination strategies may improve protection in model species, including rhesus macaques. This study compares the immunogenicity and efficacy of BCG administered by ID and intravenous (IV) injection, or as an intratracheal mucosal boost (ID + IT), against aerosol challenge with Mycobacterium tuberculosis Erdman strain. Disease pathology was significantly reduced, and survival improved, by each BCG vaccination strategy, relative to unvaccinated animals...
December 2016: Tuberculosis
https://www.readbyqxmd.com/read/27859049/lps-primed-heterotolerant-dendritic-cells-suppress-experimental-autoimmune-uveoretintitis-by-multiple-mechanisms
#5
Izabela P Klaska, Elizabeth Muckersie, Cristina Martin-Granados, Maria Christofi, John V Forrester
Exposure of bone marrow derived dendritic cells (BMDC) to high dose ultrapure lipopolysaccharide for 24 hours (h) (LPS-primed BMDC) enhances their potency in preventing inter-photoreceptor retinoid binding protein (IRBP): complete Freund's adjuvant (CFA)-induced experimental autoimmune uveoretinitis (EAU). LPS-primed BMDC are refractory to further exposure to LPS (= endotoxin tolerance, ET), evidenced here by decreased phosphorylation of TANK-binding kinase 1 (TBK1), interferon regulatory factor 3 (IRF3), c-Jun N-terminal kinase (JNK), and p38 mitogen-activated protein kinase (p38 MAPK) as well as impaired nuclear translocation of nuclear factor κB (NF-κB) and IRF3, resulting in reduced tumor necrosis factor alpha (TNF-α), interleukin (IL)-6, IL-12 and interferon beta (IFN-β) secretion...
November 15, 2016: Immunology
https://www.readbyqxmd.com/read/27817960/multifaceted-immune-responses-and-protective-efficacy-elicited-by-a-recombinant-autolyzed-salmonella-expressing-flic-flagellar-antigen-of-f18-escherichia-coli
#6
Gayeon Won, John Hwa Lee
Porcine edema disease (ED) caused by F18(+) Shiga toxin 2e-producing Escherichia coli (STEC) has imposed significant economic losses in the swine industry worldwide, resulting in sudden deaths in post-weaned piglets. The flagellin protein of F18(+) STEC, a structural component of the flagellar filament, is a known virulence factor that mediates adhesion and invasion to porcine epithelial cells. In this study, Salmonella inactivated by the E lysis gene and expressing the flagellin (fliC) antigen was genetically engineered utilizing a plasmid (pMMP184) carrying an efficient heterologous antigen delivery system...
December 7, 2016: Vaccine
https://www.readbyqxmd.com/read/27817215/biological-therapy-targeting-the-il-23-il-17-axis-in-inflammatory-bowel-disease
#7
Bram Verstockt, Gert Van Assche, Séverine Vermeire, Marc Ferrante
Introduction As many inflammatory bowel disease (IBD) patients do not benefit from long-term anti-tumour necrosis factor treatment, new anti-inflammatories are urgently needed. After the discovery of the interleukin (IL) 23/17 axis being pivotal in IBD pathogenesis, many different compounds were developed, targeting different components within this pathway. Areas covered A literature search to March 2016 was performed to identify the most relevant reports on the role of the IL-23/IL-17 axis in IBD and on the different molecules targeting this pathway...
November 6, 2016: Expert Opinion on Biological Therapy
https://www.readbyqxmd.com/read/27769591/pegloticase-failure-and-a-possible-solution-immunosuppression-to-prevent-intolerance-and-inefficacy-in-patients-with-gout
#8
Adey A Berhanu, Svetlana Krasnokutsky, Robert T Keenan, Michael H Pillinger
INTRODUCTION: Pegloticase is a highly effective therapy for patients with refractory and/or tophaceous gout, but has a high discontinuation rate (30-50%) due to development of anti-drug antibodies causing loss of efficacy and risk of infusion reactions. OBJECTIVE: To describe the use of azathioprine or other immunosuppressive therapies as a pegloticase adjunct to prevent pegloticase immunogenicity when treating gout. METHODS: Case report of azathioprine use in a patient receiving pegloticase therapy for refractory tophaceous gout, and review of the literature for the impact of immunosuppressive agents on development of anti-drug antibodies...
September 20, 2016: Seminars in Arthritis and Rheumatism
https://www.readbyqxmd.com/read/27762509/analytical-and-clinical-evaluation-of-an-immunoassay-for-estimating-immunogenicity-of-infliximab-and-etanercept-in-indian-population
#9
Canna Ghia, Shashank Akerkar, Shailaja Sabnis, Urk Rao, Gautam Rambhad
BACKGROUND / OBJECTIVES: Biologic anti-TNFs in India have improved the patient management. Significant proportions of patients lose response over time or do not respond. Possible explanations are suboptimal trough anti-TNFa concentrations or antibodies to anti-TNFs. The aim of this project was to set up and standardize an independent laboratory to test immunogenicity of anti-TNF biologics (infliximab and etanercept). METHODS: Three rheumatologists piloted this project approved by independent ethics committee and carried out in compliance with ICH/GCP guidelines...
September 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27758715/efficacy-safety-and-immunogenicity-of-biosimilars-in-inflammatory-bowel-diseases-a-systematic-review
#10
Laura Martelli, Laurent Peyrin-Biroulet
BACKGROUND: Anti-tumor necrosis factor (anti-TNF) monoclonal antibodies have revolutionized the treatment of inflammatory bowel diseases (IBD). However, because of their complexity, their production is expensive contributing to their high price. As the patent protection of these therapies has expired in several countries, biosimilars have been developed to reduce the healthcare costs. The aim of this article is to review the literature on the safety, efficacy and immunogenicity of biosimilars in IBD...
October 14, 2016: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/27751956/characterization-of-culture-filtrate-proteins-rv1197-and-rv1198-of-esat-6-family-from-mycobacterium-tuberculosis-h37rv
#11
Himanshu Pandey, Sarita Tripathi, Kanchan Srivastava, Dinesh K Tripathi, Mrigank Srivastava, Surya Kant, Kishore K Srivastava, Ashish Arora
BACKGROUND: We have characterized two immunogenic proteins, Rv1197 and Rv1198, of the Esx-5 system of the ESAT-6 family of Mycobacterium tuberculosis H37Rv. METHODS: The complex formation between Rv1197 and Rv1198 was characterized by biophysical techniques. The reactivity of serum from TB patients towards these proteins was characterized by ELISA. Lymphocyte proliferation and cytokine induction were followed in restimulated splenocytes from immunized mice by using MTT assay and CBA flowcytometry, respectively...
October 15, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27747197/immunogenicity-and-protective-response-induced-by-recombinant-plasmids-based-on-the-bab1_0267-and-bab1_0270-open-reading-frames-of-brucella-abortus-2308-in-balb-c-mice
#12
Leonardo A Gómez, Francisco I Alvarez, Pablo A Fernández, Manuel R Flores, Raúl E Molina, Roberto F Coloma, Angel A Oñate
Immunogenicity induced by recombinant plasmids based on the BAB1_0267 and BAB1_0270 open reading frames (ORFs) of Brucella abortus 2308 was evaluated. Bioinformatics analyses indicate that the BAB1_0267 and BAB1_0270 ORFs encode a protein with a SH3 domain and a Zn-dependent metalloproteinase, respectively. Both ORFs have important effects on intracellular survival and replication of B. abortus 2308, mediated via professional and non-professional phagocytic cells. Our results show that immunization with the recombinant plasmid based on the BAB1_0267 ORF significantly increases the production of IgG1, levels of IFN-γ and the lymphoproliferative response of splenocytes...
2016: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/27745952/an-inflammatory-response-is-essential-for-the-development-of-adaptive-immunity-immunogenicity-and-immunotoxicity
#13
Tetsuo Nakayama
The humoral and cellular immune responses of adaptive immunity are induced following immunization with effective vaccines. They induce functional cytokines and chemokines through the binding of vaccine components or adjuvants to innate immune receptors. Alum-adjuvanted vaccines induce local inflammatory nodules at injection sites, and the systemic and local production of the inflammatory cytokines, IL-1β, IL-6, and TNF-α, has been reported to occur three hours after vaccinations. Furthermore, G-CSF levels increase at injection sites...
October 13, 2016: Vaccine
https://www.readbyqxmd.com/read/27737604/biology-of-anti-tnf-agents-in-immune-mediated-inflammatory-diseases-therapeutic-implications
#14
Roger A Levy, Renato Guzman, Gilberto Castañeda-Hernández, Manuel Martinez-Vazquez, Guilherme Damian, Carlos Cara
Biologics are increasingly being used to modify the course of immune-mediated inflammatory diseases. Some main agents are monoclonal antibodies and a fusion-protein that target TNF. This group includes adalimumab, infliximab, certolizumab pegol, golimumab and etanercept. Although the efficacy of anti-TNFs is supported by numerous randomized clinical trials, their pharmacokinetics depend on many factors, in particular immunogenicity, which can cause marked and rapid clearance and a consequent decrease in efficacy...
October 14, 2016: Immunotherapy
https://www.readbyqxmd.com/read/27737601/immunogenicity-of-tnf-alpha-inhibitors-in-rheumatology-many-questions-enough-answers
#15
Daniel Wendling, Frank Verhoeven, Xavier Guillot, Clément Prati
No abstract text is available yet for this article.
October 13, 2016: Expert Opinion on Drug Safety
https://www.readbyqxmd.com/read/27723352/conjugation-with-an-inulin-chitosan-adjuvant-markedly-improves-the-immunogenicity-of-mycobacterium-tuberculosis-cfp10-tb10-4-fusion-protein
#16
Weili Yu, Tao Hu
Protein-based vaccines are of potential to deal with the severe situations posed by Mycobacterium tuberculosis (Mtb). Due to inherently poor immunogenicity of Mtb protein antigens, a potent immunostimulatory adjuvant is needed to enhance the cellular and humoral immune response to Mtb protein antigens. Inulin and chitosan (Cs) are polysaccharide adjuvants that can be used as achieve such an objective. The inulin-Cs conjugate (inulin-Cs) acted as a potent adjuvant through a synergistic interaction of inulin and Cs...
October 10, 2016: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/27723166/understanding-the-complications-of-anti-tnf-therapy-in-east-asian-patients-with-inflammatory-bowel-disease
#17
Jae Hee Cheon
Remarkable advances have been made in the treatment of inflammatory bowel disease (IBD) since the introduction of anti-tumor necrosis factor (TNF)-α agents, especially for patients who are refractory to or cannot tolerate conventional therapies. Currently, infliximab, adalimumab, and golimumab are available in the East Asian medical market, and these agents have been shown to be effective for inducing and maintaining long-term remission of IBD. Despite their clinical benefits, anti-TNF therapy can also lead to increased vulnerability to infections, development of autoimmune diseases and malignancy, and decreased immunogenicity of vaccinations...
October 10, 2016: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/27711158/plasmodium-vivax-vir-proteins-are-targets-of-naturally-acquired-antibody-and-t-cell-immune-responses-to-malaria-in-pregnant-women
#18
Pilar Requena, Edmilson Rui, Norma Padilla, Flor E Martínez-Espinosa, Maria Eugenia Castellanos, Camila Bôtto-Menezes, Adriana Malheiro, Myriam Arévalo-Herrera, Swati Kochar, Sanjay K Kochar, Dhanpat K Kochar, Alexandra J Umbers, Maria Ome-Kaius, Regina Wangnapi, Dhiraj Hans, Michela Menegon, Francesca Mateo, Sergi Sanz, Meghna Desai, Alfredo Mayor, Chetan C Chitnis, Azucena Bardají, Ivo Mueller, Stephen Rogerson, Carlo Severini, Carmen Fernández-Becerra, Clara Menéndez, Hernando Del Portillo, Carlota Dobaño
P. vivax infection during pregnancy has been associated with poor outcomes such as anemia, low birth weight and congenital malaria, thus representing an important global health problem. However, no vaccine is currently available for its prevention. Vir genes were the first putative virulent factors associated with P. vivax infections, yet very few studies have examined their potential role as targets of immunity. We investigated the immunogenic properties of five VIR proteins and two long synthetic peptides containing conserved VIR sequences (PvLP1 and PvLP2) in the context of the PregVax cohort study including women from five malaria endemic countries: Brazil, Colombia, Guatemala, India and Papua New Guinea (PNG) at different timepoints during and after pregnancy...
October 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27677654/inhibition-of-cytokine-response-to-tlr-stimulation-and-alleviation-of-collagen-induced-arthritis-in-mice-by-schistosoma-japonicum-peptide-sjmhe1
#19
Xuefeng Wang, Li Li, Jun Wang, Liyang Dong, Yang Shu, Yong Liang, Liang Shi, Chengcheng Xu, Yuepeng Zhou, Yi Wang, Deyu Chen, Chaoming Mao
Helminth-derived products have recently been shown to prevent the development of inflammatory diseases in mouse models. However, most identified immunomodulators from helminthes are mixtures or macromolecules with potentially immunogenic side effects. We previously identified an immunomodulatory peptide called SJMHE1 from the HSP60 protein of Schistosoma japonicum. In this study, we assessed the ability of SJMHE1 to affect murine splenocytes and human peripheral blood mononuclear cells (PBMCs) stimulated by toll-like receptor (TLR) ligands in vitro and its treatment effect on mice with collagen-induced arthritis (CIA)...
September 28, 2016: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/27629482/evaluation-of-the-potential-effects-of-as03-adjuvanted-a-h1n1-pdm09-vaccine-administration-on-the-central-nervous-system-of-non-primed-and-a-h1n1-pdm09-primed-cotton-rats
#20
Camille Planty, Corey P Mallett, Kevin Yim, Jorge C G Blanco, Marina Boukhvalova, Thomas March, Robbert van der Most, Eric Destexhe
An increased risk of narcolepsy following administration of an AS03-adjuvanted A(H1N1)pdm09 pandemic influenza vaccine (Pandemrix™) was described in children and adolescents in certain European countries. We investigated the potential effects of administration of the AS03-adjuvanted vaccine, non-adjuvanted vaccine antigen and AS03 Adjuvant System alone, on the central nervous system (CNS) in one-month-old cotton rats. Naïve or A(H1N1)pdm09 virus-primed animals received 2 or 3 intramuscular injections, respectively, of test article or saline at 2-week intervals...
September 14, 2016: Human Vaccines & Immunotherapeutics
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