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Immune response

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https://www.readbyqxmd.com/read/28651408/-identification-and-evaluation-of-t-cell-epitopes-of-rv0585c-from-mycobacterium-tuberculosis
#1
X X Wang, X Chen, Y Q Li, T Y Xiao, Y Jiang, M C Li, H C Liu, K L Wan
Objective: To investigate the human T cell epitopes of Mycobacterium (M.) tuberculosis Rv0585c protein antigen and their immunogenicity and provide evidence for the development of specific tuberculosis immune diagnostic techniques and tuberculosis vaccine. Methods: We synthesized peptides from M. tuberculosis Rv0585c protein antigen predicted by TE-predict and IEDB human T cell epitope prediction tool. The cellular immunoreactivity of the predicted peptides was evaluated through ELISpot assay with the peripheral blood monouclear cells (PBMC) of clinical tuberculosis patients...
May 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28651399/-immune-response-to-one-booster-dose-of-inactivated-hepatitis-a-vaccine-in-college-students
#2
Z Liao, X W Feng, X E Liu, Y S Zhou, H R Wen, S H Peng, Y X Zhang, B Xu, H Zhuang, H Y Chen
Objective: To evaluate the safety and immunogenicity of one booster dose of inactivated hepatitis A vaccine in young adults. Methods: The subjects were selected from participants in the clinical trial of immunogenicity of inactivated and attenuated live hepatitis A vaccine in young adults. Eligible subjects were those who had received one dose of inactivated or attenuated hepatitis A vaccine, could be contacted and were sero-negative before primary vaccination. All qualified subjects were immunized with one booster dose of inactivated hepatitis A vaccine...
May 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28651344/uterine-responses-to-early-pre-attachment-embryos-in-the-domestic-dog-and-comparisons-with-other-domestic-animal-species
#3
Felix R Graubner, Aykut Gram, Ewa Kautz, Stefan Bauersachs, Selim Aslan, Ali R Agaoglu, Alois Boos, Mariusz P Kowalewski
In the dog there is no luteolysis in the absence of pregnancy. Thus, this species lacks any anti-luteolytic endocrine signal as found in other species that modulate uterine function during the critical period of pregnancy establishment. Nevertheless, in the dog an embryo-maternal communication must occur in order to prevent rejection of embryos. Based on this hypothesis, we performed microarray analysis of canine uterine samples collected during pre-attachment phase (days 10-12) and in corresponding non-pregnant controls, in order to elucidate the embryo attachment signal...
June 23, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28651328/acute-coronary-syndrome-as-a-possible-immune-related-adverse-event-in-a-lung-cancer-patient-achieving-a-complete-response-to-anti-pd-1-immune-checkpoint-antibody
#4
Y Tomita, D Sueta, Y Kakiuchi, S Saeki, K Saruwatari, S Sakata, T Jodai, Y Migiyama, K Akaike, S Hirosako, K Fujisue, S Yamamura, S Miyazaki, S Takashio, Y Izumiya, K Nakamura, K Tsujita, H Ichiyasu, K Fujii
No abstract text is available yet for this article.
June 23, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28651181/antifouling-biocides-impairment-of-bivalve-immune-system-by-chlorothalonil
#5
Amanda da Silveira Guerreiro, Regina Coimbra Rola, Monique Tomazele Rovani, Simone Rutz da Costa, Juliana Zomer Sandrini
Marine ecosystems are subjected to a variety of contaminants. Antifouling paints, for example, have been extensively used to protect ship surfaces from marine biofouling, but their toxicity has generated great concern. Thus, we evaluated the effect of the biocide chlorothalonil on the immune system of Perna perna mussels. The mussels were exposed to 0 (control), 0.1μg/L and 10μg/L of chlorothalonil for up to 96h. After 24h and 96h of exposure, the following immune-related parameters were analyzed in the hemolymph of mussels: total hemocyte count, cell adhesion, phagocytic activity, level of reactive oxygen species, cell viability and comet assay...
June 16, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28651159/health-related-quality-of-life-results-from-the-phase-iii-checkmate-067-study
#6
Dirk Schadendorf, James Larkin, Jedd Wolchok, F Stephen Hodi, Vanna Chiarion-Sileni, Rene Gonzalez, Piotr Rutkowski, Jean-Jacques Grob, C Lance Cowey, Christopher Lao, John Wagstaff, Margaret K Callahan, Michael A Postow, Michael Smylie, Pier Francesco Ferrucci, Reinhard Dummer, Andrew Hill, Fiona Taylor, Javier Sabater, Dana Walker, Srividya Kotapati, Amy Abernethy, Georgina V Long
BACKGROUND: Nivolumab, a monoclonal antibody of immune checkpoint programmed death 1 on T cells (PD-1), combined with ipilimumab, an immune checkpoint cytotoxic T-lymphocyte-associated antigen 4 (CTLA-4) inhibitor, as combination therapy on the one hand and nivolumab as monotherapy on the other, have both demonstrated improved efficacy compared with ipilimumab alone in the CheckMate 067 study. However, the combination resulted in a higher frequency of grade 3/4 adverse events (AEs), which could result in diminished health-related quality of life (HRQoL)...
June 22, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28651122/activation-of-irf3-contributes-to-ifn-%C3%AE-and-isg54-expression-during-the-immune-responses-to-b16f10-tumor-growth
#7
Zachary Guinn, Deborah M Brown, Thomas M Petro
Interferon Regulatory Factor (IRF-3) has been shown to contribute to immune control of B16 melanoma tumor growth. We have shown previously that IRF-3 has a role in IFN-γ-induced expression of pro-apoptotic interferon stimulated gene 54 (ISG54) in macrophages and IFN-γ in T cells. To investigate the IRF3-IFN-γ-ISG54 nexus, we injected C57Bl/6 (B6) and IRF3KO mice s.c. with luciferase-producing B16-F10 tumor cells. Tumor growth as measured by luciferase levels was similar between B6 and IRF3KO mice at days 2 and 6, but was significantly greater at day 9 in IRF3KO mice compared with B6 mice...
June 23, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28651074/chimeric-antigen-receptor-engineered-natural-killer-and-natural-killer-t-cells-for-cancer-immunotherapy
#8
REVIEW
Dominique Bollino, Tonya J Webb
Natural killer (NK) cells of the innate immune system and NK T (NKT) cells, which have roles in both the innate and adaptive responses, are unique lymphocyte subsets that have similarities in their functions and phenotypes. Both cell types can rapidly respond to the presence of tumor cells and participate in immune surveillance and antitumor immune responses. This has incited interest in the development of novel cancer therapeutics based on NK and NKT cell manipulation. Chimeric antigen receptors (CARs), generated through the fusion of an antigen-binding region of a monoclonal antibody or other ligand to intracellular signaling domains, can enhance lymphocyte targeting and activation toward diverse malignancies...
June 9, 2017: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/28651073/hemophilia-a-inhibitor-treatment-the-promise-of-engineered-t-cell-therapy
#9
REVIEW
Kalpana Parvathaneni, Maha Abdeladhim, Kathleen P Pratt, David W Scott
Hemophilia A is a bleeding disorder caused by mutations in the gene encoding factor VIII (FVIII), a cofactor protein that is essential for normal blood clotting. Approximately, 1 in 3 patients with severe hemophilia A produce neutralizing antibodies (inhibitors) that block its biologic function in the clotting cascade. Current efforts to eliminate inhibitors consist of repeated FVIII injections under what is termed an "ITI" protocol (Immune Tolerance Induction). However, this method is extremely costly and approximately 30% of patients undergoing ITI do not achieve peripheral tolerance...
June 9, 2017: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/28651026/binding-of-human-plasminogen-and-high-molecular-mass-kininogen-by-cell-surface-exposed-proteins-of-candida-parapsilosis
#10
Justyna Karkowska-Kuleta, Dorota Zajac, Grazyna Bras, Oliwia Bochenska, Maria Rapala-Kozik, Andrzej Kozik
Pathogenic microbes can recruit to their cell surface human proteins that are components of important proteolytic cascades involved in coagulation, fibrinolysis and innate immune response. Once located at the bacterial or fungal surface, such deployed proteins might be utilized by pathogens to facilitate invasion and dissemination within the host organism by interfering with functionality of these systems or by exploiting specific activity of the bound enzymes. Aim of the study presented here was to characterize this phenomenon in Candida parapsilosis (Ashford) Langeron et Talice - an important causative agent of systemic fungal infections (candidiases and candidemias) in humans...
June 24, 2017: Acta Biochimica Polonica
https://www.readbyqxmd.com/read/28651021/natural-immune-response-to-plasmodium-vivax-alpha-helical-coiled-coil-protein-motifs-and-its-association-with-the-risk-of-p-vivax-malaria
#11
Nora Céspedes, Connie S N Li Wai Suen, Cristian Koepfli, Camila T França, Ingrid Felger, Issa Nebie, Myriam Arévalo-Herrera, Ivo Mueller, Giampietro Corradin, Sócrates Herrera
Protein α-helical coiled coil structures are known to induce antibodies able to block critical functions in different pathogens. In a previous study, a total of 50 proteins of Plasmodium vivax erythrocytic asexual stages containing α-helical coiled coil structural motifs were identified in silico, and the corresponding peptides were chemically synthesized. A total of 43 peptides were recognized by naturally acquired antibodies in plasma samples from both Papua New Guinea (PNG) and Colombian adult donors. In this study, the association between IgG antibodies to these peptides and clinical immunity was further explored by measuring total IgG antibody levels to 24 peptides in baseline samples from a longitudinal study of children aged 1-3 years (n = 164) followed for 16 months...
2017: PloS One
https://www.readbyqxmd.com/read/28651013/loss-of-prion-protein-induces-a-primed-state-of-type-i-interferon-responsive-genes
#12
Giulia Malachin, Malin R Reiten, Øyvind Salvesen, Håvard Aanes, Jorke H Kamstra, Kerstin Skovgaard, Peter M H Heegaard, Cecilie Ersdal, Arild Espenes, Michael A Tranulis, Maren K Bakkebø
The cellular prion protein (PrPC) has been extensively studied because of its pivotal role in prion diseases; however, its functions remain incompletely understood. A unique line of goats has been identified that carries a nonsense mutation that abolishes synthesis of PrPC. In these animals, the PrP-encoding mRNA is rapidly degraded. Goats without PrPC are valuable in re-addressing loss-of-function phenotypes observed in Prnp knockout mice. As PrPC has been ascribed various roles in immune cells, we analyzed transcriptomic responses to loss of PrPC in peripheral blood mononuclear cells (PBMCs) from normal goat kids (n = 8, PRNP+/+) and goat kids without PrPC (n = 8, PRNPTer/Ter) by mRNA sequencing...
2017: PloS One
https://www.readbyqxmd.com/read/28651010/macrophages-but-not-neutrophils-are-critical-for-proliferation-of-burkholderia-cenocepacia-and-ensuing-host-damaging-inflammation
#13
Jennifer Mesureur, Joana R Feliciano, Nelly Wagner, Margarida C Gomes, Lili Zhang, Monica Blanco-Gonzalez, Michiel van der Vaart, David O'Callaghan, Annemarie H Meijer, Annette C Vergunst
Bacteria of the Burkholderia cepacia complex (Bcc) can cause devastating pulmonary infections in cystic fibrosis (CF) patients, yet the precise mechanisms underlying inflammation, recurrent exacerbations and transition from chronic stages to acute infection and septicemia are not known. Bcc bacteria are generally believed to have a predominant extracellular biofilm life style in infected CF lungs, similar to Pseudomonas aeruginosa, but this has been challenged by clinical observations which show Bcc bacteria predominantly in alveolar macrophages...
June 26, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28651009/interleukin-4-receptor-alpha-is-still-required-after-th2-polarization-for-the-maintenance-and-the-recall-of-protective-immunity-to-nematode-infection
#14
Justin Komguep Nono, Hlumani Ndlovu, Nada Abdel Aziz, Thabo Mpotje, Lerato Hlaka, Frank Brombacher
There is currently no vaccine against parasitic nematodes and the knowledge on the mechanisms by which protective immunity against this class of parasites is achieved is continuously expanding. Nematode parasites trigger a host protective type 2 immune response via interleukin-4 receptor alpha (IL-4Rα). Despite this central role, it is not known whether IL-4Rα has a role in maintaining host type 2 immune responses following polarization. To determine the role of IL-4Rα after polarization, we used a recently established strain of rosaCreERT2-/+IL-4Rα-/Lox mice where il4rα gene deletion can be temporally controlled...
June 26, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28651000/assessing-the-impact-of-benzo-a-pyrene-on-marine-mussels-application-of-a-novel-targeted-low-density-microarray-complementing-classical-biomarker-responses
#15
Mohamed Banni, Susanna Sforzini, Volker M Arlt, Audrey Barranger, Lorna J Dallas, Caterina Oliveri, Yann Aminot, Beniamina Pacchioni, Caterina Millino, Gerolamo Lanfranchi, James W Readman, Michael N Moore, Aldo Viarengo, Awadhesh N Jha
Despite the increasing use of mussels in environmental monitoring and ecotoxicological studies, their genomes and gene functions have not been thoroughly explored. Several cDNA microarrays were recently proposed for Mytilus spp., but putatively identified partial transcripts have rendered the generation of robust transcriptional responses difficult in terms of pathway identification. We developed a new low density oligonucleotide microarray with 465 probes covering the same number of genes. Target genes were selected to cover most of the well-known biological processes in the stress response documented over the last decade in bivalve species at the cellular and tissue levels...
2017: PloS One
https://www.readbyqxmd.com/read/28650995/septins-restrict-inflammation-and-protect-zebrafish-larvae-from-shigella-infection
#16
Maria J Mazon-Moya, Alexandra R Willis, Vincenzo Torraca, Laurent Boucontet, Avinash R Shenoy, Emma Colucci-Guyon, Serge Mostowy
Shigella flexneri, a Gram-negative enteroinvasive pathogen, causes inflammatory destruction of the human colonic epithelium. Infection by S. flexneri has been well-studied in vitro and is a paradigm for bacterial interactions with the host immune system. Recent work has revealed that components of the cytoskeleton have important functions in innate immunity and inflammation control. Septins, highly conserved cytoskeletal proteins, have emerged as key players in innate immunity to bacterial infection, yet septin function in vivo is poorly understood...
June 26, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28650976/effect-of-praziquantel-on-the-differential-expression-of-mouse-hepatic-genes-and-parasite-atp-binding-cassette-transporter-gene-family-members-during-schistosoma-mansoni-infection
#17
Melissa C Sanchez, Katina V Krasnec, Amalia S Parra, Christian von Cabanlong, Geoffrey N Gobert, Boris Umylny, Pauline M Cupit, Charles Cunningham
Schistosomiasis is a chronic parasitic disease caused by sexually dimorphic blood flukes of the genus Schistosoma. Praziquantel (PZQ) is the only drug widely available to treat the disease but does not kill juvenile parasites. Here we report the use of next generation sequencing to study the transcriptional effect of PZQ on murine hepatic inflammatory, immune and fibrotic responses to Schistosoma mansoni worms and eggs. An initial T helper cell 1 (Th1) response is induced against schistosomes in mice treated with drug vehicle (Vh) around the time egg laying begins, followed by a T helper cell 2 (Th2) response and the induction of genes whose action leads to granuloma formation and fibrosis...
June 26, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28650939/cd1d-restricted-natural-killer-t-cells-are-preserved-in-indian-long-term-nonprogressors
#18
Dharmendra Singh, Manisha Ghate, Sheela Godbole, Smita Kulkarni, Madhuri Thakar
BACKGROUND: Natural killer T (NKT) cells act as a bridge between innate and adaptive immune responses. Limited information is available regarding the role of NKT cells in the HIV disease progression especially HIV-1 C infection. METHODOLOGY: NKT cells were characterized for their frequency and the activation, aging, exhaustion status, and their proliferation ability in 32 long-term nonprogressors (LTNPs), 40 progressors, 18 patients before and after suppressive combination antiretroviral therapy (cART) along with 35 HIV-1-negative subjects using multicolor flow cytometry...
August 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28650861/microbiome-in-interstitial-lung-disease-from-pathogenesis-to-treatment-target
#19
Margaret L Salisbury, MeiLan K Han, Robert P Dickson, Philip L Molyneaux
PURPOSE OF REVIEW: This review summarizes current knowledge of the role of the lung microbiome in interstitial lung disease and poses considerations of the microbiome as a therapeutic target. RECENT FINDINGS: Although historically considered sterile, bacterial communities have now been well documented in lungs in health and disease. Studies in idiopathic pulmonary fibrosis (IPF) suggest that increased bacterial burden and/or abundance of potentially pathogenic bacteria may drive disease progression, acute exacerbations, and mortality...
June 24, 2017: Current Opinion in Pulmonary Medicine
https://www.readbyqxmd.com/read/28650722/optimized-dna-vaccine-enhanced-by-adjuvant-il28b-induces-protective-immune-responses-against-herpes-simplex-virus-type-2-in-mice
#20
Yan Zhou, Ziyan Wang, Yongqing Xu, Zeqiang Zhang, Rui Hua, Wei Liu, Chunlai Jiang, Yan Chen, Wenying Yang, Wei Kong
Antigen-specific immune responses determine the efficacy of herpes simplex virus type 2 (HSV-2) vaccines. To optimize the immunogenicity of the antigen gD2, we developed the gD2ΔUL25 DNA vaccine encoding HSV-2 glycoprotein D and UL25 gene encoding viral capsid vertex proteins in this study. The gD2 and gD2ΔUL25 DNA vaccines were compared with formalin-inactivated HSV-2 (FI-HSV-2), and results showed a greater protective immune response induced by gD2ΔUL25 than by gD2. Therefore, gD2ΔUL25 was chosen to evaluate further using the IL28B adjuvant...
June 26, 2017: Viral Immunology
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