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https://www.readbyqxmd.com/read/29772571/effect-of-air-pollution-on-exacerbations-of-bronchiectasis-in-badalona-spain-2008-2016
#1
Ignasi Garcia-Olivé, Zoran Stojanovic, Joaquim Radua, Laura Rodriguez-Pons, Carlos Martinez-Rivera, Juan Ruiz Manzano
INTRODUCTION: Air pollution has been widely associated with respiratory diseases. Nevertheless, the association between air pollution and exacerbations of bronchiectasis has been less studied. OBJECTIVE: To analyze the effect of air pollution on exacerbations of bronchiectasis. METHODS: This was a retrospective observational study conducted in Badalona. The number of daily hospital admissions and emergency room visits related to exacerbation of bronchiectasis (ICD-9 code 494...
May 17, 2018: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/29772383/a-signal-decreased-electrochemical-immunosensor-for-the-sensitive-detection-of-lag-3-protein-based-on-a-hollow-nanobox-mofs-aupt-alloy
#2
Wei Xu, Zhen Qin, Yutong Hao, Qiang He, Shuai Chen, Zhongshuang Zhang, Dan Peng, Haiyan Wen, Jun Chen, Jingfu Qiu, Chaorui Li
In this work, hollow nanobox metal-organic framework (HNM) nanocomposites were synthesised and utilised for the first time in a signal decreased electrochemical immunosensor for the ultrasensitive quantitative determination of lymphocyte activation gene-3 (LAG-3) protein, which is a newly discovered biomarker. With the aid of signal materials, namely, SiO2 -tagged anti-LAG-3 antibody (SiO2 -Ab2 ) and the biotin-streptavidin system, the sensor can achieve signal amplification. Encapsulation of tin dioxide-functionalised reduced graphene oxide (rGO-SnO2 ) and gold and platinum alloys (AuPt alloys) onto the surface of hollow nanobox metal-organic frameworks (MOFs) was performed to prepare rGO-SnO2 /hollow nanobox-MOFs/AuPt alloys (rGO-SnO2 /HNMs/AuPt) as the matrix...
May 8, 2018: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29760706/complement-opsonized-hiv-1-alters-cross-talk-between-dendritic-cells-and-natural-killer-nk-cells-to-inhibit-nk-killing-and-to-upregulate-pd-1-cxcr3-and-ccr4-on-t-cells
#3
Rada Ellegård, Mohammad Khalid, Cecilia Svanberg, Hanna Holgersson, Ylva Thorén, Mirja Karolina Wittgren, Jorma Hinkula, Sofia Nyström, Esaki M Shankar, Marie Larsson
Dendritic cells (DCs), natural killer (NK) cells, and T cells play critical roles during primary HIV-1 exposure at the mucosa, where the viral particles become coated with complement fragments and mucosa-associated antibodies. The microenvironment together with subsequent interactions between these cells and HIV at the mucosal site of infection will determine the quality of immune response that ensues adaptive activation. Here, we investigated how complement and immunoglobulin opsonization influences the responses triggered in DCs and NK cells, how this affects their cross talk, and what T cell phenotypes are induced to expand following the interaction...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29755666/impact-of-lenalidomide-maintenance-on-the-immune-environment-of-multiple-myeloma-patients-with-low-tumor-burden-after-autologous-stem-cell-transplantation
#4
Karel Fostier, Jo Caers, Nathalie Meuleman, Katrijn Broos, Jurgen Corthals, Kris Thielemans, Rik Schots, Brenda De Keersmaecker
Lenalidomide is a potent anti-myeloma drug with immunomodulatory properties. It is increasingly used in a low-dose maintenance setting to prolong remission duration after standard treatment. Data on the in vivo effects of lenalidomide are scarce and sometimes different from the well-described in vitro effects. We therefore evaluated the numerical, phenotypical and functional impact of lenalidomide maintenance on several immune cell types in a cohort of seventeen homogeneously treated myeloma patients achieving a low residual myeloma burden after a bortezomib based-induction followed by autologous stem cell transplantation...
April 17, 2018: Oncotarget
https://www.readbyqxmd.com/read/29740718/combination-immunotherapy-in-non-small-cell-lung-cancer
#5
REVIEW
Melina E Marmarelis, Charu Aggarwal
PURPOSE OF REVIEW: Checkpoint blockade has changed the treatment landscape in non-small cell lung cancer (NSCLC), but single-agent approaches are effective for only a select subset of patients. Here, we will review the evidence for combination immunotherapies in NSCLC and the clinical data evaluating the efficacy of this approach. RECENT FINDINGS: Clinical trials evaluating combination PD-1 and CTLA-4 blockade as well as PD-1 in combination with agents targeting IDO1, B7-H3, VEGF, and EGFR show promising results...
May 8, 2018: Current Oncology Reports
https://www.readbyqxmd.com/read/29730461/evolution-of-checkpoint-inhibitors-for-the-treatment-of-metastatic-gastric-cancers-current-status-and-future-perspectives
#6
REVIEW
Julien Taieb, Markus Moehler, Narikazu Boku, Jaffer A Ajani, Eduardo Yañez Ruiz, Min-Hee Ryu, Silke Guenther, Vikram Chand, Yung-Jue Bang
BACKGROUND: Standard treatment options for patients with advanced gastric or gastroesophageal junction cancer (GC/GEJC) are associated with limited efficacy and some toxicity. Recently, immunotherapy with antibodies that inhibit the programmed death 1 (PD-1)/programmed death ligand 1 (PD-L1) interaction has emerged as a new treatment option. This manuscript reviews early-phase and late-phase trials of immunotherapy in advanced GC/GEJC. METHODS: Searches for studies of immunotherapy in GC/GEJC were performed using PubMed, ClinicalTrials...
April 22, 2018: Cancer Treatment Reviews
https://www.readbyqxmd.com/read/29729899/function-of-t-regulatory-type-1-cells-is-down-regulated-and-is-associated-with-the-clinical-presentation-of-coronary-artery-disease
#7
Zhendong Zhu, Jiyun Ye, Yumei Ma, Peng Hua, Yu Huang, Xuemei Fu, Dexuan Li, Maogen Yuan, Zhonghua Xia
T regulatory type 1 (Tr1) cells can promote tolerance and suppress inflammation. Atherosclerosis may be induced by the proinflammatory activation of cells in the vasculature and the immune system. Hence, we wondered whether defects in Tr1 function were a contributing factor to coronary artery disease (CAD). Data showed that the frequency of IL-10+ Tr1 cells was significantly lower in CAD patients than in controls. Compared to healthy controls, Tr1 cells from CAD patients presented lower CTLA-4 but higher PD-1 expression, in addition to lower IL-10 secretion...
May 3, 2018: Human Immunology
https://www.readbyqxmd.com/read/29729204/outcome-of-anti-viral-immunity-in-the-liver-is-shaped-by-the-level-of-antigen-expressed-in-infected-hepatocytes
#8
Katrin Manske, Nina Kallin, Verena König, Annika Schneider, Sandra Kurz, Miriam Bosch, Meike Welz, Ru-Lin Cheng, Bertram Bengsch, Katja Steiger, Ulrike Protzer, Robert Thimme, Percy A Knolle, Dirk Wohlleber
The liver bears unique immune-properties supporting both immune tolerance and immunity, but the mechanisms responsible for clearance versus persistence of virus-infected hepatocytes remains unclear. Here, we dissect the factors determining the outcome of anti-viral immunity using novel recombinant adenoviruses reflecting the hepatropism and -trophism of hepatitis viruses. We generated replication-deficient adenoviruses with equimolar ovalbumin, luciferase and GFP-expression driven by strong ubiquitous CMV-promoter (Ad-CMV-GOL) or by 100-fold weaker, yet hepatocyte-specific Transthyretin(TTR)-promoter (Ad-TTR-GOL)...
May 5, 2018: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/29685359/air-pollutants-and-atmospheric-pressure-increased-risk-of-ed-visit-for-spontaneous-pneumothorax
#9
Joo Hyung Park, Sun Hwa Lee, Seong Jong Yun, Seokyong Ryu, Seung Woon Choi, Hye Jin Kim, Tae Kyung Kang, Sung Chan Oh, Suk Jin Cho
OBJECTIVE: To investigate the impact of short-term exposure to air pollutants and meteorological variation on ED visits for primary spontaneous pneumothorax (PSP). MATERIAL AND METHODS: We retrospectively identified PSP cases that presented at the ED of our tertiary center between January 2015 and September 2016. We classified the days into three types: no PSP day (0 case/day), sporadic days (1-2 cases/day), and cluster days (PSP, ≥3 cases/day). Association between the daily incidence of PSP with air pollutants and meteorological data were determined using Poisson generalized-linear-model to calculate incidence rate ratio (IRRs) and the use of time-series (lag-1 [the cumulative air pollution level on the previous day of PSP], lag-2 [two days ago], and lag-3 [three days ago])...
April 14, 2018: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29671649/lag-3-represents-a-marker-of-cd4-t-cells-with-regulatory-activity-in-patients-with-bone-fracture
#10
Jun Wang, Yunfan Ti, Yicun Wang, Guodong Guo, Hui Jiang, Menghan Chang, Hongbo Qian, Jianning Zhao, Guojing Sun
The lymphocyte activation gene 3 (LAG-3) is a CD4 homolog with binding affinity to MHC class II molecules. It is thought that LAG-3 exerts a bimodal function, such that co-ligation of LAG-3 and CD3 could deliver an inhibitory signal in conventional T cells, whereas, on regulatory T cells, LAG-3 expression could promote their inhibitory function. In this study, we investigated the role of LAG-3 expression on CD4+ T cells in patients with long bone fracture. We found that LAG-3+ cells represented approximately 13% of peripheral blood CD4+ T cells on average...
April 19, 2018: Immunological Investigations
https://www.readbyqxmd.com/read/29666149/genetic-and-phenotypic-difference-in-cd8-t-cell-exhaustion-between-chronic-hepatitis-b-infection-and-hepatocellular-carcinoma
#11
Xiaochen Wang, Qifeng He, Haiyuan Shen, Xiao-Jie Lu, Beicheng Sun
BACKGROUND: Several recent studies published have suggested that T cell exhaustion exists both in chronic infection and cancer. However, to date, few studies have investigated their differences. Here we designed this study to explore the genetic and phenotypic difference in CD8+ T cell exhaustion between chronic hepatitis B (CHB) and hepatocellular carcinoma (HCC). METHODS: In this study, we assayed the phenotypes and functional states of CD8+ T cells separating from human CHB tissues and HCC tissues, and re-analyse the single-cell sequencing data (GSE98638) published previously...
April 17, 2018: Journal of Medical Genetics
https://www.readbyqxmd.com/read/29616115/expression-of-multiple-immune-checkpoint-molecules-on-t-cells-in-malignant-ascites-from-epithelial-ovarian-carcinoma
#12
Yuichi Imai, Kosei Hasegawa, Hirokazu Matsushita, Nao Fujieda, Sho Sato, Etsuko Miyagi, Kazuhiro Kakimi, Keiichi Fujiwara
Expression of immune checkpoint molecules, including programmed cell death protein-1 (PD-1), has been reported on T cells in various types of cancer. However, the expression status of these molecules in the tumor microenvironment of epithelial ovarian cancer (EOC) has not yet been studied. A total of 54 cases of malignant ascites from patients with EOC were analyzed in the present study. The expression of PD-1, lymphocyte-activation gene-3 (LAG-3), T-cell immunoglobulin and mucin-domain containing-3 (TIM-3) and B and T lymphocyte attenuator (BTLA) on cluster of differentiation (CD)4+ and CD8+ T cells in malignant EOC ascites were investigated using multicolor flow cytometric analysis...
May 2018: Oncology Letters
https://www.readbyqxmd.com/read/29602773/pd-l1-independent-mechanisms-control-the-resistance-of-melanoma-to-cd4-t-cell-adoptive-immunotherapy
#13
Stephen R Goding, Kyle A Wilson, Carolyn Rosinsky, Paul Andrew Antony
Immunotherapy is becoming the standard of care for melanoma. However, resistance to therapy is a major problem. Previously, we showed that tumor-specific, cytotoxic CD4+ T cells from tyrosinase-related protein 1 transgenic mice could overcome secondary resistance to recurring melanoma when anti-programmed cell death 1 ligand (PD-L1) checkpoint blockade was combined with either anti-lymphocyte-activated gene 3 (LAG-3) Abs or depletion of tumor-specific regulatory T (Treg ) cells. In this study, we show that PD-L1 expressed by the host, not B16 melanoma, plays a major role in the early stages of exhaustion or primary resistance...
March 30, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29599411/cd103-tumor-resident-cd8-t-cells-are-associated-with-improved-survival-in-immunotherapy-na%C3%A3-ve-melanoma-patients-and-expand-significantly-during-anti-pd-1-treatment
#14
Jarem Edwards, James S Wilmott, Jason Madore, Tuba Nur Gide, Camelia Quek, Annie Tasker, Angela Ferguson, Jinbiao Chen, Rehana Hewavisenti, Peter Hersey, Thomas Gebhardt, Wolfgang Weninger, Warwick J Britton, Robyn P M Saw, John F Thompson, Alexander M Menzies, Georgina V Long, Richard A Scolyer, Umaimainthan Palendira
Purpose: Therapeutic blockade of immune checkpoints has revolutionized cancer treatment. Durable responses, however, occur in less than half of those treated, and efforts to improve treatment efficacy are confounded by a lack of understanding of the characteristics of the cells that initiate antitumor immune response. Experimental Design: We performed multiparameter flow cytometry and quantitative multiplex immunofluorescence staining on tumor specimens from immunotherapy-naïve melanoma patients and longitudinal biopsy specimen obtained from patients undergoing anti-PD-1 therapy...
March 29, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29555909/differential-expression-pattern-of-co-inhibitory-molecules-on-cd4-t-cells-in-uncomplicated-versus-complicated-malaria
#15
Annemieke Abel, Christiane Steeg, Francis Aminkiah, Otchere Addai-Mensah, Marylyn Addo, Nicola Gagliani, Christian Casar, Denis Dekugmen Yar, Ellis Owusu-Dabo, Thomas Jacobs, Maria Sophia Mackroth
The immune response of malaria patients is a main factor influencing the clinical severity of malaria. A tight regulation of the CD4+ T cell response or the induction of tolerance have been proposed to contribute to protection from severe or clinical disease. We therefore compared the CD4+ T cell phenotypes of Ghanaian children with complicated malaria, uncomplicated malaria, asymptomatic Plasmodium falciparum (Pf) infection or no infection. Using flow cytometric analysis and automated multivariate clustering, we characterized the expression of the co-inhibitory molecules CTLA-4, PD-1, Tim-3, and LAG-3 and other molecules implicated in regulatory function on CD4+ T cells...
March 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29553498/multiplexed-immunofluorescence-analysis-and-quantification-of-intratumoral-pd-1-tim-3-cd8-t-cells
#16
Clémence Granier, Emeline Vinatier, Elia Colin, Marion Mandavit, Charles Dariane, Virginie Verkarre, Lucie Biard, Rami El Zein, Corinne Lesaffre, Isabelle Galy-Fauroux, Hélène Roussel, Eléonore De Guillebon, Charlotte Blanc, Antonin Saldmann, Cécile Badoual, Alain Gey, Éric Tartour
Immune cells are important components of the tumor microenvironment and influence tumor growth and evolution at all stages of carcinogenesis. Notably, it is now well established that the immune infiltrate in human tumors can correlate with prognosis and response to therapy. The analysis of the immune infiltrate in the tumor microenvironment has become a major challenge for the classification of patients and the response to treatment. The co-expression of inhibitory receptors such as Program Cell Death Protein 1 (PD1; also known as CD279), Cytotoxic T Lymphocyte Associated Protein 4 (CTLA-4), T-Cell Immunoglobulin and Mucin Containing Protein-3 (Tim-3; also known as CD366), and Lymphocyte Activation Gene 3 (Lag-3; also known as CD223), is a hallmark of T cell exhaustion...
February 8, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29549613/climate-variability-and-dengue-hemorrhagic-fever-in-southeast-sulawesi-province-indonesia
#17
Ramadhan Tosepu, Kraichat Tantrakarnapa, Kanchana Nakhapakorn, Suwalee Worakhunpiset
To determine the association of climatic factors and dengue hemorrhagic fever and to develop the prediction approach of future dengue transmission. The study used totally monthly dengue hemorrhagic fever cases at Health Office Kendari, Southeast Sulawesi, Indonesia. Monthly meteorological data, consisting of temperature, rainfall, and humidity, was obtained from the Meteorology, Climatology and Geophysics Agency in Kendari district. All data analysis, including Spearman and Poisson distribution, was carried out in R Studio (version 3...
March 16, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29544515/next-generation-of-immune-checkpoint-therapy-in-cancer-new-developments-and-challenges
#18
REVIEW
Julian A Marin-Acevedo, Bhagirathbhai Dholaria, Aixa E Soyano, Keith L Knutson, Saranya Chumsri, Yanyan Lou
Immune checkpoints consist of inhibitory and stimulatory pathways that maintain self-tolerance and assist with immune response. In cancer, immune checkpoint pathways are often activated to inhibit the nascent anti-tumor immune response. Immune checkpoint therapies act by blocking or stimulating these pathways and enhance the body's immunological activity against tumors. Cytotoxic T lymphocyte-associated molecule-4 (CTLA-4), programmed cell death receptor-1 (PD-1), and programmed cell death ligand-1(PD-L1) are the most widely studied and recognized inhibitory checkpoint pathways...
March 15, 2018: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/29535740/targeting-lag-3-and-pd-1-to-enhance-t-cell-activation-by-antigen-presenting-cells
#19
Felix S Lichtenegger, Maurine Rothe, Frauke M Schnorfeil, Katrin Deiser, Christina Krupka, Christian Augsberger, Miriam Schlüter, Julia Neitz, Marion Subklewe
Immune checkpoint inhibition has been shown to successfully reactivate endogenous T cell responses directed against tumor-associated antigens, resulting in significantly prolonged overall survival in patients with various tumor entities. For malignancies with low endogenous immune responses, this approach has not shown a clear clinical benefit so far. Therapeutic vaccination, particularly dendritic cell (DC) vaccination, is a strategy to induce T cell responses. Interaction of DCs and T cells is dependent on receptor-ligand interactions of various immune checkpoints...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29497421/engineered-t-regulatory-type-1-cells-for-clinical-application
#20
REVIEW
Silvia Gregori, Maria Grazia Roncarolo
T regulatory cells, a specialized subset of T cells, are key players in modulating antigen (Ag)-specific immune responses in vivo . Inducible T regulatory type 1 (Tr1) cells are characterized by the co-expression of CD49b and lymphocyte-activation gene 3 (LAG-3) and the ability to secrete IL-10, TGF-β, and granzyme (Gz) B, in the absence of IL-4 and IL-17. The chief mechanisms by which Tr1 cells control immune responses are secretion of IL-10 and TGF-β and killing of myeloid cells via GzB. Tr1 cells, first described in peripheral blood of patients who developed tolerance after HLA-mismatched fetal liver hematopoietic stem cell transplantation, have been proven to modulate inflammatory and effector T cell responses in several immune-mediated diseases...
2018: Frontiers in Immunology
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