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https://www.readbyqxmd.com/read/29245183/increased-expression-and-modulated-regulatory-activity-of-co-inhibitory-receptors-pd-1-tigit-and-tim-3-in-lymphocytes-of-systemic-sclerosis-patients
#1
Michelle Fleury, Anna C Belkina, Elizabeth A Proctor, Christopher Zammitti, Robert W Simms, Douglas A Lauffenburger, Jennifer E Snyder-Cappione, Robert Lafyatis, Hans Dooms
OBJECTIVE: Immune dysfunction is an important component of the disease process underlying Systemic Sclerosis (SSc), but the mechanisms contributing to altered immune cell function in SSc remain poorly defined. Here, we measured the expression and function of the co-inhibitory receptors (co-IRs) PD-1, TIGIT, TIM-3, and LAG-3 in lymphocyte subsets from the peripheral blood of SSc patients. METHODS: Co-IR expression levels on immune cell subsets were analyzed using a 16-color flow cytometry panel...
December 15, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29244882/%C3%AE-ii-spectrin-in-t-cells-is-involved-in-the-regulation-of-cell-cell-contact-leading-to-immunological-synapse-formation
#2
Justyna M Meissner, Aleksander F Sikorski, Tomasz Nawara, Jakub Grzesiak, Krzysztof Marycz, Dżamila M Bogusławska, Izabela Michalczyk, Marie-Christine Lecomte, Beata Machnicka
T-lymphocyte activation after antigen presentation to the T-Cell Receptor (TCR) is a critical step in the development of proper immune responses to infection and inflammation. This dynamic process involves reorganization of the actin cytoskeleton and signaling molecules at the cell membrane, leading to the formation of the Immunological Synapse (IS). The mechanisms regulating the formation of the IS are not completely understood. Nonerythroid spectrin is a membrane skeletal protein involved in the regulation of many cellular processes, including cell adhesion, signaling and actin cytoskeleton remodeling...
2017: PloS One
https://www.readbyqxmd.com/read/29244085/effects-of-cold-exposure-on-physiology-meat-quality-and-behavior-of-turkey-hens-and-toms-crated-at-transport-density
#3
Z A Henrikson, C J Vermette, K Schwean-Lardner, T G Crowe
The impact of cold exposure while crated at a density characteristic of transport (83 kg/m2) was assessed in 12-wk-old turkey hens and 16-wk-old toms. Turkeys (72 toms, 72 hens) were randomly divided into 3 male and 3 female groups: 2 moderate 20°C groups with either 30% or 80% RH and a cold group exposed to -18°C, with uncontrolled, high RH. Groups of 8 birds (one replicate unit) were observed in a climate-controlled chamber for 8 h prior to slaughter. Core body temperature (CBT), live shrink, heterophil-lymphocyte ratio (HLR), and change in blood glucose levels were assessed; meat quality measures included thigh and breast muscle pH and L*, a*, and b* color values...
December 13, 2017: Poultry Science
https://www.readbyqxmd.com/read/29243545/the-role-of-macrophages-in-the-differentiation-process-of-ureteral-polyps
#4
Yue-Hui Wang, Tian-Qi Zhang, Ji-Ning Fu, Ying Liu, Hai-Yan Jia
Objective To evaluate the role of macrophage infiltration in the differentiation process of ureteral polyps and cancers. Methods This retrospective immunohistochemical study analysed archival samples of pathologically-confirmed specimens of low- and high-grade ureteral cancer, ureteral papilloma and ureteral polyps. The samples were immunohistochemically stained for cluster of differentiation (CD)4, CD8, CD16, CD25, CD56 and CD68 using immunofluorescence in order to identify different T-lymphocyte populations and macrophages...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/29243267/naegleria-fowleri-immunization-modifies-lymphocytes-and-apc-of-nasal-mucosa
#5
M M Carrasco-Yepez, R Campos-Rodríguez, A A Reséndiz-Albor, C Peña-Juárez, A Contis-Montes de Oca, I M Arciniega-Martínez, P Bonilla-Lemus, S Rojas-Hernandez
We investigated if intranasal immunization with amoebic lysates plus cholera toxin modified the populations of T and B lymphocytes, macrophages and dendritic cells by flow cytometry from nose-associated lymphoid tissue (NALT), cervical lymph nodes (CN), nasal passages (NP) and spleen (SP). In all immunized groups, the percentage of CD4 was higher than CD8 cells. CD45 was increased in B cells from mice immunized. We observed IgA-antibody forming cell (IgA-AFC) response, mainly in NALT and NP. Macrophages from NP and CN expressed the highest levels of CD80 and CD86 either in N...
December 15, 2017: Parasite Immunology
https://www.readbyqxmd.com/read/29243219/pd-1-blockade-enhances-the-anti-tumor-efficacy-of-gm-csf-surface-modified-bladder-cancer-stem-cells-vaccine
#6
Xiaojun Shi, Xinji Zhang, Jinlong Li, Lijun Mo, Hongfan Zhao, Yongtong Zhu, Zhiming Hu, Jimin Gao, Wanlong Tan
Eliminating cancer stem cells (CSCs) is a key issue in eradicating tumor. The streptavidin-granulocyte -macrophage colony stimulating factor (SA-GM-CSF) surface-modified bladder cancer stem cells vaccine previously developed using our protein-anchor technology could effectively induce specific immune response for eliminating CSCs. However, program death receptor-1 (PD-1)/program death ligand 1 (PD-L1) signaling in tumor microenvironment results in tumor adaptive immune resistance. Although the CSCs vaccine could increase the number of CD8+ T-cells, a part of these CD8+ T-cells expressed PD-1...
December 15, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29242771/sentinels-at-the-frontline-the-role-of-intraepithelial-lymphocytes-in-inflammatory-bowel-disease
#7
Madeleine D Hu, Karen L Edelblum
Purpose of review: Intestinal mucosal immunity is tightly regulated to ensure effective host defense against invasive microorganisms while limiting the potential for aberrant damage. In inflammatory bowel disease (IBD), an imbalance between effector and regulatory T cell populations results in an uncontrolled inflammatory response to commensal bacteria. Intraepithelial lymphocytes (IEL) are perfectly positioned within the intestinal epithelium to provide the first line of mucosal defense against luminal microbes or rapidly respond to epithelial injury...
December 2017: Current Pharmacology Reports
https://www.readbyqxmd.com/read/29242629/immune-microenvironment-of-experimental-rat-c6-gliomas-resembles-human-glioblastomas
#8
Anna Gieryng, Dominika Pszczolkowska, Katarzyna Bocian, Michal Dabrowski, Wenson David Rajan, Michal Kloss, Jakub Mieczkowski, Bozena Kaminska
Glioblastoma (GBM) is the most aggressive primary brain tumor, with ineffective anti-tumor responses and a poor prognosis despite aggressive treatments. GBM immune microenvironment is heterogenous  and activation of specific immune populations in GBM is not fully characterized. Reliable animal models are critical for defining mechanisms of anti-tumor immunity. First we analyzed the immune subpopulations present in rat C6 gliomas. Using flow cytometry we determined kinetics of infiltration of myeloid cells and T lymphocytes into glioma-bearing brains...
December 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29242513/scarf-1-promotes-adhesion-of-cd4-t-cells-to-human-hepatic-sinusoidal-endothelium-under-conditions-of-shear-stress
#9
Daniel A Patten, Sivesh K Kamarajah, Joanne M Rose, Joseph Tickle, Emma L Shepherd, David H Adams, Chris J Weston, Shishir Shetty
Liver-resident cells are constantly exposed to gut-derived antigens via portal blood and, as a consequence, they express a unique repertoire of scavenger receptors. Whilst there is increasing evidence that the gut contributes to chronic inflammatory liver disease, the role of scavenger receptors in regulating liver inflammation remains limited. Here, we describe for the first time the expression of scavenger receptor class F, member 1 (SCARF-1) on hepatic sinusoidal endothelial cells (HSEC). We report that SCARF-1 shows a highly localised expression pattern and co-localised with endothelial markers on sinusoidal endothelium...
December 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29242294/in-vivo-il-12-il-23p40-neutralization-blocks-th1-th17-response-after-allogeneic-hematopoietic-cell-transplantation
#10
Joseph Pidala, Francisca Beato, Jongphil Kim, Brian Betts, Heather Jim, Elizabeth Sagatys, John E Levine, James Lm Ferrara, Umut Ozbek, Ernesto Ayala, Marco Davila, Hugo F Fernandez, Teresa Field, Mohamed A Kharfan-Dabaja, Divis Khaira, Farhad Khimani, Frederick L Locke, Asmita Mishra, Michael Nieder, Taiga Nishihori, Lia Perez, Marcie Riches, Claudio Anasetti
T helper 1 and T helper 17 lymphocytes mediate acute graft vs. host disease. Interleukin 12 is critical for T helper 1 differentiation and interleukin 23 for T helper 17 maintenance. Interleukin 12 and 23 are heterodimeric cytokines that share the p40 subunit (IL-12/IL-23p40). In a randomized, blinded, placebo-controlled trial, we examined the biologic impact and clinical outcomes following IL-12/IL-23p40 neutralization using ustekinumab. 30 patients received peripheral blood mobilized hematopoietic cell transplantation from HLA-matched sibling or unrelated donors, received sirolimus plus tacrolimus as graft vs...
December 14, 2017: Haematologica
https://www.readbyqxmd.com/read/29242279/molecular-biomarkers-of-primary-and-acquired-resistance-to-t-cell-mediated-immunotherapy-in-cancer-landscape-clinical-implications-and-future-directions
#11
REVIEW
Young Kwang Chae, Michael S Oh, Francis J Giles
The emergence of immunotherapy has revolutionized cancer treatment in recent years. Inhibitors of immune checkpoints, including antibodies against cytotoxic T-lymphocyte-associated protein 4, programmed cell death protein 1, and programmed death ligand 1, have demonstrated notable efficacy in certain advanced cancers. Unfortunately, many patients do not benefit from these therapies and either exhibit primary resistance to treatment or develop acquired mechanisms of resistance after initially responding to therapy...
December 14, 2017: Oncologist
https://www.readbyqxmd.com/read/29242126/significance-of-elevated-prohibitin-1-levels-in-multiple-sclerosis-patients-lymphocytes-towards-the-assessment-of-subclinical-disease-activity-and-its-role-in-the-central-nervous-system-pathology-of-disease
#12
Satheesh Kumar M K, Sreepriya Nair, Ullas Mony, Sugavanan Kalingavarman, Ramaswamynathan Venkat, Sivanarayanan T B, Unni Akk, Ramiah Rajeshkannan, Anandakumar Anandakuttan, Sureshkumar Radhakrishnan, Krishnakumar N Menon
Multiple Sclerosis (MS) is an autoimmune-neurodegenerative disorder managed therapeutically by modulating lymphocytes activity which has potential in disease management. Prohibitin 1(PHB) that controls the reactive oxygen species (ROS) and present on the activated lymphocytes have significance in the therapy of MS as esters of fumaric acid that regulates ROS is in phase II/III clinical trials. Thus, we evaluated the expression levels of PHB1 in experimental autoimmune encephalomyelitis (EAE), the animal model of MS and on MS patient's lymphocytes...
December 11, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29241876/update-in-ethiopathogeny-diagnosis-and-treatment-of-the-igg4-related-disease
#13
REVIEW
Fernando Martínez-Valle, Olimpia Orozco-Gálvez, Andreu Fernández-Codina
IgG4 related disease (IgG4-RD) is probably an autoimmune pathology of unknown etiology. Diverse interactions participate in its pathogen between the adaptive and innate immune systems, activating lymphocytes B and T which trigger the inflammatory cascade, which culminates in fibrosis of the organs and their malfunction. It can affect a multitude of organs simultaneously. The diagnosis is based on the correlation of clinical findings with anatomopathological results (lymphoplasmocitary infiltrate, storiform fibrosis, obliterative phlebitis and IgG4+plasmatic cell count) and with the presence of elevated IgG4 in serum, depending on the criteria used...
December 11, 2017: Medicina Clínica
https://www.readbyqxmd.com/read/29241668/neutrophil-to-lymphocyte-ratio-is-a-strong-predictor-of-atherosclerotic-carotid-plaques-in-older-adults
#14
T Corriere, S Di Marca, E Cataudella, A Pulvirenti, S Alaimo, B Stancanelli, L Malatino
BACKGROUND AND AIMS: The Neutrophil-to-Lymphocyte Ratio (NLR), an index of systemic inflammation, has been reported to be associated with subclinical atherosclerosis, but its predictive role of the presence of carotid atherosclerotic plaques remains undefined. This study aims to assess this association which gives additional value to this biomarker, with respect to the main risk factors, in the prediction of carotid atherosclerosis in older adults. METHODS AND RESULTS: We recruited 324 patients, aged ≥65 years, without hematopoietic disorders, and/or history of malignancies, evidence of acute infections, chronic inflammatory status, and history of glucocorticoid therapy within the past three months, hospitalized in the Unit of Internal Medicine, University of Catania, Catania, Italy from January 2014 to December 2016...
November 5, 2017: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
https://www.readbyqxmd.com/read/29241029/activated-human-b-cells-stimulate-cox-2-expression-in-follicular-dendritic-cell-like-cells-via-tnf-%C3%AE
#15
Jini Kim, Seungkoo Lee, Dooil Jeoung, Young-Myeong Kim, Jongseon Choe
In spite of the potential importance of cyclooxygenase (COX)-2 expression in the germinal center, its underlying cellular and molecular mechanisms are largely unknown. COX-2 is the key enzyme generating pleiotropic prostaglandins. Based on our previous findings, we hypothesized that lymphocytes would stimulate COX-2 expression in follicular dendritic cell (FDC) by liberating cytokines. In this study, we examined the effect of tonsillar lymphocytes on COX-2 expression in FDC-like cells by immunoblotting. B but not T cells induced COX-2 protein in a time- and dose-dependent manner...
December 11, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/29241019/quantitative-analysis-of-a-multiplexed-immunofluorescence-panel-in-t-cell-lymphoma
#16
Siok-Bian Ng, Shuangyi Fan, Shoa-Nian Choo, Michal Hoppe, Hoang Mai Phuong, Sanjay De Mel, Anand D Jeyasekharan
Immunohistochemistry (IHC) provides clinically useful information on protein expression in cancer cells. However, quantification of colocalizing signals using conventional IHC and visual scores is challenging. Here we describe the application of quantitative immunofluorescence in angioimmunoblastic T-cell lymphoma (AITL), a peripheral T-cell lymphoma characterized by cellular heterogeneity that impedes IHC interpretation and quantification. A multiplexed immunofluorescence (IF) panel comprising T- and B-lymphocyte markers along with T-follicular helper (TFH) markers was validated for appropriate cellular localization in sections of benign tonsillar tissue and tested in two samples of AITL, using a Vectra microscope for spectral imaging and InForm software for analysis...
December 1, 2017: SLAS Technology
https://www.readbyqxmd.com/read/29240602/unclassified-variants-of-brca1-and-brca2-in-korean-patients-with-ovarian-cancer
#17
Min Chul Choi, Ja-Hyun Jang, Sang Geun Jung, Hyun Park, Won Duk Joo, Seung Hun Song, Chan Lee, Je Ho Lee
OBJECTIVE: The aim of the present study was to investigate unclassified variants (UVs) in BRCA1 and 2 of Korean patients with ovarian cancer. METHODS: We retrospectively analyzed 138 patients diagnosed with ovarian/fallopian tubal/peritoneal cancer between January 2013 and January 2016, whose BRCA genetic test results and clinical characteristics were available for review. Patient peripheral blood lymphocyte specimens were assessed for BRCA mutations and variations by direct sequencing...
December 13, 2017: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/29239481/the-self-curing-phenomenon-of-schistosome-infection-in-rhesus-macaques-insight-from-in-vitro-studies
#18
Workineh Torben, Adebayo J Molehin, Robert V Blair, Carys Kenway, Faith Shiro, Davis Roslyn, Bayissa Chala, Dereje Gutu, Michael A Kebede, Gul Ahmad, Weidong Zhang, Pyone Aye, Mahesh Mohan, Andrew Lackner, Afzal A Siddiqui
A reduction in the burden of schistosomiasis is potentially achievable by integrating a schistosomiasis vaccine with current control measures. Here, we determine parasite-specific in vitro responses of B, T, and NK cells from naive uninfected rhesus macaques to Schistosoma mansoni (Sm) egg (SmEA) and worm antigen (SmWA) preparations isolated from infected baboons. Pronounced B cell responses to SmEA and NK cell responses to both SmEA and SmWA were observed. High levels of IL-2 and IL-21 responses against Sm antigens were observed in T and non-T cells of lymph nodes (LNs) and gut lamina propria-derived lymphocytes (LPLs)...
November 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/29239193/-checkpoint-inhibitors-in-the-treatment-of-upper-gastrointestinal-tract-tumors
#19
R Obermannova
Chemotherapy prolongs overall survival (OS) in esophageal (EC) and gastric cancer (GC). Unsatisfactory results of systemic therapy initiated a search for new treatment options. In metastatic disease, a number of targeted drugs were tested; however, several phase III studies assessing receptor tyrosin kinase-related signaling pathways, such as EGFR, MET/HGF or mTOR, failed. Trastuzumab remains the only targeted drug with a known molecular predictor, which extended the OS in metastatic gastric adenocarcinoma and adenocarcinoma of esophago-gastric junction...
2017: Klinická Onkologie: Casopis Ceské a Slovenské Onkologické Spolecnosti
https://www.readbyqxmd.com/read/29239187/-immunotherapy-for-bladder-cancer
#20
T Büchler
Urothelial carcinoma is the most common urological malignancy. Nonspecific immunotherapy using the Bacillus Calmette-Guerin vaccine has long been the mainstay for the treatment of high-risk superficial bladder carcinoma in an adjuvant setting after transurethral endoscopic resection. In metastatic disease, cisplatin-based chemotherapy remains the main therapeutic modality. In Europe, the standard second-line chemotherapy for patients with cisplatin-refractory tumours is vinflunine. Other systemic treatments with a lower level of evidence include paclitaxel and docetaxel...
2017: Klinická Onkologie: Casopis Ceské a Slovenské Onkologické Spolecnosti
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