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https://www.readbyqxmd.com/read/29141305/-research-progress-on-rhinitis-medicamentosa
#1
Y N Wang, Z L Luan, H T Wang
Rhinitis medicamentosa (RM) refers to nonallergic inflammation in the nasal mucosa which is caused by the abuse of nasal decongestant and it often occurs in patients with allergic/nonallergic rhinitis along with nasal congestion. RM is characterized by nasal congestion based on long-term use of nasal decongestant, without rhinorrhoea or sneezing. The signs of RM include nasal swelling, thickening, loss of elasticity, and loss of sensitivity to the decongestant. The histological changes of RM are loss of nasal mucosa cilia, squamous epithelium metaplasia, edema of epithelium cell, hyperplasia of goblet cell, increased expression of epidermal growth factor receptor and infiltration of inflammatory cells, etc...
November 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/29140131/effects-of-inhaled-corticosteroids-on-the-expression-of-tnf-family-molecules-in-murine-model-of-allergic-asthma
#2
Fei Shi, Yarui Zhang, Chen Qiu, Yi Xiong, Manhui Li, Aijun Shan, Ying Yang, Binbin Li
BACKGROUND: The tumor necrosis factor superfamily member LIGHT (the official gene symbol approved by NCBI Gene Database), an inflammatory factor secreted by T cells after allergen exposure, recently discovered to play crucial roles in asthmatic airway remodeling. However, it is unclear whether LIGHT could be controlled by inhaled corticosteroids, a key component of asthma management. This study was to investigate the effects and potential mechanisms of inhaled budesonide on the expressions of LIGHT and its receptors (LTβR and HVEM) of lung tissues in ovalbumin-sensitized mice...
October 2017: Experimental Lung Research
https://www.readbyqxmd.com/read/29137612/comparison-of-semi-quantitative-and-quantitative-dynamic-contrast-enhanced-mri-evaluations-of-vertebral-marrow-perfusion-in-a-rat-osteoporosis-model
#3
Jingqi Zhu, Zuogang Xiong, Jiulong Zhang, Yuyou Qiu, Ting Hua, Guangyu Tang
BACKGROUND: This study aims to investigate the technical feasibility of semi-quantitative and quantitative dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) in the assessment of longitudinal changes of marrow perfusion in a rat osteoporosis model, using bone mineral density (BMD) measured by micro-computed tomography (micro-CT) and histopathology as the gold standards. METHODS: Fifty rats were randomly assigned to the control group (n=25) and ovariectomy (OVX) group whose bilateral ovaries were excised (n=25)...
November 14, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29137280/ppar%C3%AE-sumoylation-mediated-lipid-accumulation-in-lung-cancer
#4
Ai N H Phan, Vu T A Vo, Tuyen N M Hua, Min-Kyu Kim, Se-Young Jo, Jong-Whan Choi, Hyun-Won Kim, Jaekyoung Son, Young-Ah Suh, Yangsik Jeong
Metabolic reprogramming as a crucial emerging hallmark of cancer is critical for tumor cells to maintain cellular bioenergetics, biosynthesis and reduction/oxidation (REDOX) balance. Peroxisome proliferator-activated receptor gamma (PPARγ) is a nuclear hormone receptor regulating transcription of diverse gene sets involved in inflammation, metabolism, and suppressing tumor growth. Thiazolidinediones (TZDs), as selective PPARγ ligands, are insulin-sensitizing drugs widely prescribed for type 2 diabetic patients in the clinic...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29137184/cell-type-specific-metabolic-flux-analysis-a-challenge-for-metabolic-phenotyping-and-a-potential-solution-in-plants
#5
Merja T Rossi, Monika Kalde, Chaiyakorn Srisakvarakul, Nicholas J Kruger, R George Ratcliffe
Stable isotope labelling experiments are used routinely in metabolic flux analysis (MFA) to determine the metabolic phenotype of cells and tissues. A complication arises in multicellular systems because single cell measurements of transcriptomes, proteomes and metabolomes in multicellular organisms suggest that the metabolic phenotype will differ between cell types. In silico analysis of simulated metabolite isotopomer datasets shows that cellular heterogeneity confounds conventional MFA because labelling data averaged over multiple cell types does not necessarily yield averaged flux values...
November 13, 2017: Metabolites
https://www.readbyqxmd.com/read/29136317/il-7-receptor-heterogeneity-as-a-mechanism-for-repertoire-change-during-post-depletional-homeostatic-proliferation-and-its-relation-to-costimulation-blockade-resistant-rejection
#6
He Xu, Victoria A Bendersky, Todd V Brennan, Jaclyn R Espinosa, Allan D Kirk
Kidney transplant patients treated with belatacept without depletional induction experience higher rates of acute rejection compared to patients treated with conventional immunosuppression. Costimulation blockade-resistant rejection (CoBRR) is associated with terminally differentiated T cells. Alemtuzumab induction and belatacept/sirolimus immunotherapy effectively prevents CoBRR. We hypothesized that cells in late phases of differentiation would be selectively less capable of repopulating post-depletion than more naïve phenotypes, providing a potential mechanism by which lymphocyte depletion and repopulation could reduce the risk of CoBRR...
November 14, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/29136193/early-first-trimester-uteroplacental-flow-and-the-progressive-disintegration-of-spiral-artery-plugs-new-insights-from-contrast-enhanced-ultrasound-and-tissue-histopathology
#7
V H J Roberts, T K Morgan, P Bednarek, M Morita, G J Burton, J O Lo, A E Frias
STUDY QUESTION: Does the use of a vascular contrast agent facilitate earlier detection of maternal flow to the placental intervillous space (IVS) in the first trimester of pregnancy? SUMMARY ANSWER: Microvascular filling of the IVS was demonstrated by contrast-enhanced ultrasound from 6 weeks of gestation onwards, earlier than previously believed. WHAT IS KNOWN ALREADY: During placental establishment and remodeling of maternal spiral arteries, endovascular trophoblast cells invade and accumulate in the lumen of these vessels to form 'trophoblast plugs'...
November 10, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29136120/t2-mapping-cardiovascular-magnetic-resonance-identifies-the-presence-of-myocardial-inflammation-in-patients-with-dilated-cardiomyopathy-as-compared-to-endomyocardial-biopsy
#8
M Spieker, E Katsianos, M Gastl, P Behm, P Horn, C Jacoby, B Schnackenburg, P Reinecke, M Kelm, R Westenfeld, F Bönner
Aims: The aim of this study was to determine the value of T2 mapping for the non-invasive assessment of myocardial inflammation in different stages of systolic left ventricular dysfunction in dilated cardiomyopathy (DCM) in comparison with endomyocardial biopsy (EMB). Methods and results: A total of 132 subjects were enrolled between 2013 and 2016 (62 controls and 70 patients with DCM). All patients underwent CMR at 1.5 T and received coronary angiogram and EMB...
November 10, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29133782/mtor-intersects-antibody-inducing-signals-from-taci-in-marginal-zone-b-cells
#9
Jordi Sintes, Maurizio Gentile, Shuling Zhang, Yolanda Garcia-Carmona, Giuliana Magri, Linda Cassis, Daniel Segura-Garzón, Alessandra Ciociola, Emilie K Grasset, Sabrina Bascones, Laura Comerma, Marc Pybus, David Lligé, Irene Puga, Cindy Gutzeit, Bing He, Wendy DuBois, Marta Crespo, Julio Pascual, Anna Mensa, Juan Ignacio Aróstegui, Manel Juan, Jordi Yagüe, Sergi Serrano, Josep Lloreta, Eric Meffre, Michael Hahne, Charlotte Cunningham-Rundles, Beverly A Mock, Andrea Cerutti
Mechanistic target of rapamycin (mTOR) enhances immunity in addition to orchestrating metabolism. Here we show that mTOR coordinates immunometabolic reconfiguration of marginal zone (MZ) B cells, a pre-activated lymphocyte subset that mounts antibody responses to T-cell-independent antigens through a Toll-like receptor (TLR)-amplified pathway involving transmembrane activator and CAML interactor (TACI). This receptor interacts with mTOR via the TLR adapter MyD88. The resulting mTOR activation instigates MZ B-cell proliferation, immunoglobulin G (IgG) class switching, and plasmablast differentiation through a rapamycin-sensitive pathway that integrates metabolic and antibody-inducing transcription programs, including NF-κB...
November 13, 2017: Nature Communications
https://www.readbyqxmd.com/read/29133342/exercise-training-protects-human-and-rodent-%C3%AE-cells-against-endoplasmic-reticulum-stress-and-apoptosis
#10
Flavia M M Paula, Nayara C Leite, Patricia C Borck, Ricardo Freitas-Dias, Miriam Cnop, Mara P T Chacon-Mikahil, Claudia R Cavaglieri, Piero Marchetti, Antonio C Boschero, Claudio C Zoppi, Decio L Eizirik
Prolonged exercise has positive metabolic effects in obese or diabetic individuals. These effects are usually ascribed to improvements in insulin sensitivity. We evaluated whether exercise also generates circulating signals that protect human and rodent β cells against endoplasmic reticulum (ER) stress and apoptosis. For this purpose, we obtained serum from humans or mice before and after an 8 wk training period. Exposure of human islets or mouse or rat β cells to human or rodent sera, respectively, obtained from trained individuals reduced cytokine (IL-1β+IFN-γ)- or chemical ER stressor-induced β-cell ER stress and apoptosis, at least in part via activation of the transcription factor STAT3...
November 13, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29132960/influenza-derived-peptides-cross-react-with-allergens-and-provide-asthma-protection
#11
Chrysanthi Skevaki, Christoph Hudemann, Mikhail Matrosovich, Christian Möbs, Sinu Paul, Andreas Wachtendorf, Bilal Alashkar Alhamwe, Daniel P Potaczek, Stefanie Hagner, Diethard Gemsa, Holger Garn, Alessandro Sette, Harald Renz
BACKGROUND: The hygiene hypothesis is the leading concept to explain the current asthma epidemic, which is built on the observation that a lack of bacterial contact early in life induces allergic Th2 immune responses. OBJECTIVE: Since little is known about the contribution of respiratory viruses in this context, we evaluated the effect of prior influenza-infection on the development of allergic asthma. METHODS: Mice were infected with influenza and once recovered, subjected to an ovalbumin or house dust mite-induced experimental asthma protocol...
November 10, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29131267/interleukin-33-promotes-the-inflammatory-reaction-in-chronic-rhinosinusitis-with-nasal-polyps-by-nf-%C3%AE%C2%BAb-signaling-pathway
#12
L Zhang, L-L Jiang, Z-W Cao
OBJECTIVE: Interleukin (IL)-33 promotes T helper (Th2) immune response and may be involved in the pathogenesis of chronic rhinosinusitis with nasal polyps (CRSwNP). Using murine and human specimens, we evaluated the role of IL-33 in CRSwNP. MATERIALS AND METHODS: To establish CRSwNP, Balb/c mice were sensitized with house dust mite, followed up by intranasal exposure to Staphylococcus aureus to stimulate the inflammatory response of nasal mucosa. The hematoxylin-eosin staining and total serum IgE were used to the successful construction of CRSwNP model...
October 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29131154/impact-of-hla-g-polymorphism-on-the-outcome-of-allogeneic-hematopoietic-stem-cell-transplantation-for-metastatic-renal-cell-carcinoma
#13
R Crocchiolo, O Ringden, J-O Bay, D Blaise, B Omasic, B Mazzi, C Picard, S Trinca, L Barkholt, J Peccatori, S Gregori, G Amodio, K Fleischhauer, F Ciceri, M Bregni
Renal cell carcinoma (RCC) is particularly sensitive to immune intervention. HLA-G, a non-classical HLA class I molecule with immunomodulatory properties, has been studied with regard to outcome after hematopoietic stem cell transplantation (HSCT), in particular the 14 bp insertion/deletion polymorphism in the 3' untranslated region. Here we analyzed n=56 patients affected by metastatic RCC who received an allogeneic HSCT between 1998 and 2006 in Milano, Marseille, Clermont-Ferrand and Stockholm. The 14 bp polymorphism was analyzed in correlation with overall survival (OS), PFS, acute and chronic GvHD...
November 13, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/29131120/a-prospective-study-to-evaluate-a-diagnostic-algorithm-for-the-use-of-fluid-lymphocyte-subset-analysis-in-undiagnosed-unilateral-pleural-effusions
#14
Giles Dixon, Rahul Bhatnagar, Natalie Zahan-Evans, Amelia O Clive, Paul F Virgo, Mary T Brett, Sophie H Otton, Andrew R L Medford, Nick A Maskell
BACKGROUND: Haematological malignancy is an important cause of pleural effusion. Pleural effusions secondary to haematological malignancy are usually lymphocyte predominant. However, several other conditions such as carcinoma, tuberculosis, and chronic heart failure also cause lymphocytic effusions. Lymphocyte subset (LS) analysis may be a useful test to identify haematological malignancy in patients with lymphocytic effusions. However, research into their utility in pleural effusion diagnostic algorithms has not yet been published...
November 10, 2017: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/29130617/dendritic-cell-phenotype-in-severe-asthma-reflects-clinical-responsiveness-to-glucocorticoids
#15
Emma S Chambers, Alexandra M Nanzer, Paul E Pfeffer, David F Richards, Adrian R Martineau, Christopher J Griffiths, Christopher J Corrigan, Catherine M Hawrylowicz
BACKGROUND: Subsets of patients with severe asthma remain symptomatic despite prolonged, high dosage glucocorticoid therapy. We hypothesised that the clinical glucocorticoid sensitivity of these asthmatics is reflected in differences in peripheral blood dendritic cell subsets. OBJECTIVE: To compare peripheral blood leukocyte populations using flow cytometry at baseline and after 2 weeks of systemic glucocorticoid (steroid) treatment to identify immunological differences between steroid sensitive (SS) and steroid resistant (SR) asthmatics...
November 11, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29129094/rational-combination-of-immunotherapy-for-triple-negative-breast-cancer-treatment
#16
Chia-Wei Li, Seung-Oe Lim, Jennifer L Hsu, Mien-Chie Hung
Recent evidence indicates that tumor infiltrating lymphocytes (TILs), including cytotoxic T cells, are present in the tumor microenvironment of triple-negative breast cancers (TNBC). Despite the presence of cytotoxic T cells, these tumors still develop, progress, and metastasize, suggesting evasion of immune response. One mechanism of immunosuppression is the presence of the T cell inhibitory molecule, programmed death protein 1 (PD-1), on infiltrating T cells and its cognate ligand programmed death ligand 1 (PD-L1) on tumor cells, myeloid dendritic cells (DCs), and macrophages, in the tumor microenvironment...
October 2017: Chinese Clinical Oncology
https://www.readbyqxmd.com/read/29129023/pathomechanisms-of-contact-sensitization
#17
REVIEW
Philipp R Esser, Stefan F Martin
Contact sensitization is the initial process involved in the development of an allergic reaction to xenobiotic environmental substances. Here, we briefly describe the differences between irritant and allergic contact dermatitis. Then, we highlight the essential steps involved in the development of an ACD reaction, i.e., the protein binding of haptens, genetic factors influencing the penetration of sensitizers into the skin, the different mechanisms driving the initial development of an inflammatory cytokine micromilieu enabling the full maturation of dendritic cells, the role of pre- and pro-haptens, antigen presentation and T cell activation via MHC and CD1 molecules, dendritic cell (DC) migration, and potential LC contribution as well as the different T cell subsets involved in ACD...
November 11, 2017: Current Allergy and Asthma Reports
https://www.readbyqxmd.com/read/29128555/combined-haploidentical-and-umbilical-cord-blood-allogeneic-stem-cell-transplantation-for-high-risk-lymphoma-and-cll
#18
Jingmei Hsu, Andrew Artz, Sebastian A Mayer, Danielle Guarner, Michael R Bishop, Ronit Reich-Slotky, Sonali M Smith, June Greenberg, Justin Kline, Rosanna Ferrante, Adrienne A Phillips, Usama Gergis, Hongtao Liu, Wendy Stock, Melissa Cushing, Tsiporah B Shore, Koen van Besien
Limited studies have reported on outcomes for lymphoid malignancy patients receiving alternative donor allogeneic stem cell transplants. We have previously described combining CD34-selected haploidentical grafts with umbilical cord blood (haplo-cord) to accelerate neutrophil and platelet engraftment. Here, we examine the outcome of patients with lymphoid malignancies undergoing haplo-cord transplantation at the University of Chicago and Weill Cornell Medical College. We analyzed 42 lymphoma and CLL patients who underwent haplo-cord allogeneic stem cell transplantation...
November 8, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29128399/nitric-oxide-production-by-glomerular-podocytes
#19
Oleg Palygin, Daria V Ilatovskaya, Vladislav Levchenko, Bradley T Endres, Aron M Geurts, Alexander Staruschenko
Nitric Oxide (NO), a potent vasodilator and vital signaling molecule, has been shown to contribute to the regulation of glomerular ultrafiltration. However, whether changes in NO occur in podocytes during the pathogenesis of salt-sensitive hypertension has not yet been thoroughly examined. We showed here that podocytes produce NO, and further hypothesized that hypertensive animals would exhibit reduced NO production in these cells in response to various paracrine factors, which might contribute to the damage of glomeruli filtration barrier and development of proteinuria...
November 8, 2017: Nitric Oxide: Biology and Chemistry
https://www.readbyqxmd.com/read/29127862/frondoside-a-potentiates-the-effects-of-conventional-therapeutic-agents-in-acute-leukemia
#20
F H Sajwani, P Collin, T E Adrian
Acute leukemia is the major cause of mortality in hematological malignancies. Despite improvement of survival with current chemotherapies, patients die from the disease or side-effects of treatment. Thus, new therapeutic agents are needed. Frondoside A is a triterpenoid glycoside originally isolated from the sea cucumber, Cucumaria frondosa that has potent antitumor effects in various cancers. The current study investigated the effects of frondoside A in acute leukemia cell lines alone and in combination with drugs used for this malignancy...
November 8, 2017: Leukemia Research
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