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mechanism of anca

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https://www.readbyqxmd.com/read/28165478/a-distinct-innate-lymphoid-cell-population-regulates-tumor-associated-t-cells
#1
Sarah Q Crome, Linh T Nguyen, Sandra Lopez-Verges, S Y Cindy Yang, Bernard Martin, Jennifer Y Yam, Dylan J Johnson, Jessica Nie, Michael Pniak, Pei Hua Yen, Anca Milea, Ramlogan Sowamber, Sarah Rachel Katz, Marcus Q Bernardini, Blaise A Clarke, Patricia A Shaw, Philipp A Lang, Hal K Berman, Trevor J Pugh, Lewis L Lanier, Pamela S Ohashi
Antitumor T cells are subject to multiple mechanisms of negative regulation. Recent findings that innate lymphoid cells (ILCs) regulate adaptive T cell responses led us to examine the regulatory potential of ILCs in the context of cancer. We identified a unique ILC population that inhibits tumor-infiltrating lymphocytes (TILs) from high-grade serous tumors, defined their suppressive capacity in vitro, and performed a comprehensive analysis of their phenotype. Notably, the presence of this CD56(+)CD3(-) population in TIL cultures was associated with reduced T cell numbers, and further functional studies demonstrated that this population suppressed TIL expansion and altered TIL cytokine production...
February 6, 2017: Nature Medicine
https://www.readbyqxmd.com/read/28163397/the-role-of-pdgfs-and-pdgfrs-in-colorectal-cancer
#2
REVIEW
Roberta M Manzat Saplacan, Loredana Balacescu, Claudia Gherman, Romeo I Chira, Anca Craiu, Petru A Mircea, Cosmin Lisencu, Ovidiu Balacescu
Introduction. Colorectal cancer (CRC) is an important cause of morbidity and mortality worldwide. Angiogenesis was reported as one important mechanism activated in colorectal carcinogenesis. Tumor microenvironment associated angiogenesis involves a large spectrum of signaling molecules and deciphering their role in colorectal carcinogenesis still represents a major challenge. The aim of our study is to point out the diagnosis and prediction role of PDGF family and their receptors in colorectal carcinogenesis...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28134583/pathology-of-antineutrophil-cytoplasmic-antibody-associated-pulmonary-and-renal-disease
#3
Maxwell L Smith
CONTEXT: -Antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis commonly presents with pulmonary and renal involvement that may present diagnostic challenges. OBJECTIVES: -To highlight the updates in the classification of small vessel vasculitis, present the patterns of pulmonary and renal pathology in which ANCA-associated vasculitis is included in the differential diagnosis, analyze the screening and specific antineutrophil cytoplasmic antibody testing methods in the clinical laboratory, compare and contrast the 3 major ANCA-associated vasculitis diseases, and review the pathophysiologic mechanisms of tissue injury in this setting...
February 2017: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/28125053/interaction-of-new-developed-tio%C3%A2-based-photocatalytic-nanoparticles-with-pathogenic-microorganisms-and-human-dermal-and-pulmonary-fibroblasts
#4
Ionela Cristina Nica, Miruna Silvia Stan, Marcela Popa, Mariana Carmen Chifiriuc, Veronica Lazar, Gratiela G Pircalabioru, Iuliana Dumitrescu, Madalina Ignat, Marcel Feder, Liviu Cristian Tanase, Ionel Mercioniu, Lucian Diamandescu, Anca Dinischiotu
TiO₂-based photocatalysts were obtained during previous years in order to limit pollution and to ease human daily living conditions due to their special properties. However, obtaining biocompatible photocatalysts is still a key problem, and the mechanism of their toxicity recently received increased attention. Two types of TiO₂ nanoparticles co-doped with 1% of iron and nitrogen (TiO₂-1% Fe-N) atoms were synthesized in hydrothermal conditions at pH of 8.5 (HT1) and 5.5 (HT2), and their antimicrobial activity and cytotoxic effects exerted on human pulmonary and dermal fibroblasts were assessed...
January 25, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28107529/complement-activation-and-stat4-expression-are-associated-with-early-inflammation-in-diabetic-wounds
#5
Kenji M Cunnion, Neel K Krishna, Haree K Pallera, Angela Pineros-Fernandez, Magdielis Gregory Rivera, Pamela S Hair, Brittany P Lassiter, Ryan Huyck, Mary A Clements, Antoinette F Hood, George T Rodeheaver, Patrick S Cottler, Jerry L Nadler, Anca D Dobrian
: Diabetic non-healing wounds are a major clinical problem. The mechanisms leading to poor wound healing in diabetes are multifactorial but unresolved inflammation may be a major contributing factor. The complement system (CS) is the most potent inflammatory cascade in humans and contributes to poor wound healing in animal models. Signal transducer and activator of transcription 4 (STAT4) is a transcription factor expressed in immune and adipose cells and contributes to upregulation of some inflammatory chemokines and cytokines...
2017: PloS One
https://www.readbyqxmd.com/read/28080057/identification-of-binding-modes-for-amino-naphthalene-2-cyanoacrylate-anca-probes-to-amyloid-fibrils-from-molecular-dynamics-simulations
#6
Huan He, Juan Xu, Dan-Yang Cheng, Li Fu, Yu-Shu Ge, Feng-Lei Jiang, Yi Liu
The amino naphthalene 2-cyanoacrylate (ANCA) probe is a kind of fluorescent amyloid binding probe that can report different fluorescence emissions when bound to various amyloid deposits in tissue, while their interactions with amyloid fibrils remain unclear due to the insoluble nature of amyloid fibrils. Here, all-atom molecular dynamics simulations were used to investigate the interaction between ANCA probes with three different amyloid fibrils. Two common binding modes of ANCA probes on Aβ40 amyloid fibrils were identified by cluster analysis of multiple simulations...
February 7, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28002524/histopathological-consequences-of-hyperzincemia-on-rat-teeth-experimental-study
#7
Mihaela Monica Scutariu, Iordanis Salamastrakis, Cristinel Ionel Stan, Alin HoraŢiu Nedelcu, Liviu Ciprian Gavril, Claudia Florida Costea, Ana Maria Dumitrescu, Anca Sava, Elena Şapte
The aim of this study was to investigate the histopathological features of dental pulp in acute zinc (Zn) intoxication and to identify possible physiopathological mechanisms of the lesions. Twelve adult male Wistar rats were divided into two groups, the control one and the exposed group. Each animal from the experimental group received a single dose of zinc chloride (ZnCl2) by intraperitoneal injection. Blood samples were collected from exposed animals at 2, 4, and 6 hours after the injection and plasma Zn concentrations were determined by spectrophotometry...
2016: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28002521/the-cadherin-switch-assessment-in-the-epithelial-mesenchymal-transition-of-urothelial-bladder-carcinomas
#8
Andrei Ioan Drocaş, Paul Ioan Tomescu, George Mitroi, Petru Octavian Drăgoescu, Claudiu Mărgăritescu, Alex Emilian Stepan, Valeriu Şurlin, Ştefania CrăiŢoiu, Ileana Drocaş, Anca Marilena Ungureanu, Alice Elena Găman, Adriana Turculeanu, Cristiana Eugenia Simionescu
INTRODUCTION: The epithelial-mesenchymal transition (EMT) process is a complex molecular mechanism that is involved in the acquisition of an aggressive, invasive and metastatic phenotype by carcinomas. The cadherin switch consists in the alteration of E-cadherin and N-cadherin expression and is specific for the EMT process. MATERIALS AND METHODS: This study included 35 cases of primitive urothelial carcinomas investigated in relation with clinicopathological prognostic parameters and expression of E- and N-cadherins in the advancing edge and intratumoral compartments...
2016: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28002036/serum-levels-of-oxidative-stress-markers-in-patients-with-type-2-diabetes-mellitus-and-non-alcoholic-steatohepatitis
#9
F Casoinic, D Sampelean, Anca D Buzoianu, N Hancu, Dorina Baston
INTRODUCTION: Oxidative stress is one of the key mechanisms responsible for disease progression in non-alcoholic fatty liver disease. The aim of this study was to evaluate the serum levels of oxidative stress markers in patients with type 2 diabetes mellitus (DMT2) and non-alcoholic steatohepatitis (NASH) and test their relationships with clinical and biochemical patient characteristics, compared to patients with DMT2 without non-alcoholic fatty liver disease (NAFLD), and controls. MATERIALS AND METHODS: In all, 60 consecutive patients with DMT2 and NASH, 55 with DMT2 without NAFLD, and 50 age-and-gender-matched healthy subjects participated in the study...
December 1, 2016: Romanian Journal of Internal Medicine, Revue Roumaine de Médecine Interne
https://www.readbyqxmd.com/read/27981307/microbiota-small-rnas-in-inflammatory-bowel-disease
#10
REVIEW
Anca T Filip, Ovidiu Balacescu, Catalin Marian, Andrei Anghel
MiRNAs are a class of potential gene regulators of critical importance in Inflammatory Bowel Disease (IBD). This review aims to present the connection between gut microbiota, probiotics administration and microRNA (miRNA) expression in IBD. It also brings into question cross-kingdom RNAi (RNA interference). Not only that gut host cells garden the intestinal microbiome via miRNA, but also strong evidence supports the idea that different species of bacteria have an impact on the intestinal immune response by modulating miRNA expression...
December 2016: Journal of Gastrointestinal and Liver Diseases: JGLD
https://www.readbyqxmd.com/read/27974851/mechanisms-leading-from-systemic-autoimmunity-to-joint-specific-disease-in-rheumatoid-arthritis
#11
REVIEW
Anca I Catrina, Camilla I Svensson, Vivianne Malmström, Georg Schett, Lars Klareskog
A key unanswered question in the pathophysiology of rheumatoid arthritis (RA) is how systemic autoimmunity progresses to joint-specific inflammation. In patients with seropositive RA (that is, characterized by the presence of autoantibodies) evidence is accumulating that immunity against post-translationally modified (such as citrullinated) autoantigens might be triggered in mucosal organs, such as the lung, long before the first signs of inflammation are seen in the joints. However, the mechanism by which systemic autoimmunity specifically homes to the joint and bone compartment, thereby triggering inflammation, remains elusive...
December 15, 2016: Nature Reviews. Rheumatology
https://www.readbyqxmd.com/read/27973790/interpreting-interactions-between-ozone-and-residual-petroleum-hydrocarbons-in-soil
#12
Tengfei Chen, Anca G Delgado, Burcu M Yavuz, Juan Maldonado, Yi Zuo, Roopa Kamath, Paul Westerhoff, Rosa Krajmalnik-Brown, Bruce E Rittmann
We evaluated how gas-phase O3 interacts with residual petroleum hydrocarbons in soil. Total petroleum hydrocarbons (TPH) were 18 ± 0.6 g/kg soil, and TPH carbon constituted ∼40% of the dichloromethane-extractable carbon (DeOC) in the soil. At the benchmark dose of 3.4 kg O3/kg initial TPH, TPH carbon was reduced by nearly 6 gC/kg soil (40%), which was accompanied by an increase of about 4 gC/kg soil in dissolved organic carbon (DOC) and a 4-fold increase in 5-day biochemical oxygen demand (BOD5). Disrupting gas channeling in the soil improved mass transport of O3 to TPH bound to soil and increased TPH removal...
January 3, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/27915073/a-mathematical-model-of-reward-and-executive-circuitry-in-obsessive-compulsive-disorder
#13
Anca Rǎdulescu, Rachel Marra
The neuronal circuit that controls obsessive and compulsive behaviors involves a complex network of brain regions (some with known involvement in reward processing). Among these are cortical regions, the striatum and the thalamus (which compose the CSTC pathway), limbic areas such as the amygdala and the hippocampus, as well as dopamine pathways. Abnormal dynamic behavior in this brain network is a hallmark feature of patients with increased anxiety and motor activity, like the ones affected by OCD. There is currently no clear understanding of precisely what mechanisms generate these behaviors...
December 1, 2016: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/27913065/hpv-status-cancer-stem-cell-marker-expression-hypoxia-gene-signatures-and-tumour-volume-identify-good-prognosis-subgroups-in-patients-with-hnscc-after-primary-radiochemotherapy-a-multicentre-retrospective-study-of-the-german-cancer-consortium-radiation-oncology
#14
Annett Linge, Fabian Lohaus, Steffen Löck, Alexander Nowak, Volker Gudziol, Chiara Valentini, Cläre von Neubeck, Martin Jütz, Inge Tinhofer, Volker Budach, Ali Sak, Martin Stuschke, Panagiotis Balermpas, Claus Rödel, Anca-Ligia Grosu, Amir Abdollahi, Jürgen Debus, Ute Ganswindt, Claus Belka, Steffi Pigorsch, Stephanie E Combs, David Mönnich, Daniel Zips, Frank Buchholz, Daniela E Aust, Gustavo B Baretton, Howard D Thames, Anna Dubrovska, Jan Alsner, Jens Overgaard, Mechthild Krause, Michael Baumann
OBJECTIVE: To investigate the impact of the tumour volume, HPV status, cancer stem cell (CSC) marker expression and hypoxia gene signatures, as potential markers of radiobiological mechanisms of radioresistance, in a contemporary cohort of patients with locally advanced head and neck squamous cell carcinoma (HNSCC), who received primary radiochemotherapy (RCTx). MATERIALS AND METHODS: For 158 patients with locally advanced HNSCC of the oral cavity, oropharynx or hypopharynx who were treated at six DKTK partner sites, the impact of tumour volume, HPV DNA, p16 overexpression, p53 expression, CSC marker expression and hypoxia-associated gene signatures on outcome of primary RCTx was retrospectively analyzed...
December 2016: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/27861923/evaluating-the-utility-of-serological-testing-in-laryngotracheal-stenosis
#15
S Ryan Hall, Clint T Allen, Albert L Merati, Ross M Mayerhoff
OBJECTIVES/HYPOTHESIS: Whereas mechanical (traumatic) causes of laryngotracheal stenosis (LTS) are identified based on history, autoimmune laryngotracheal stenosis (aLTS) and idiopathic laryngotracheal stenosis (iLTS) are often more difficult to differentiate. The objective of this study was to evaluate serologic testing in a large cohort of nonmechanical LTS patients to determine which tests, if any, lead clinicians to the etiology of the LTS. STUDY DESIGN: Retrospective chart review...
November 12, 2016: Laryngoscope
https://www.readbyqxmd.com/read/27857778/state-of-acute-agitation-at-psychiatric-emergencies-in-europe-the-stage-study
#16
Luis San, Josef Marksteiner, Peter Zwanzger, María Aragüés Figuero, Francisco Toledo Romero, Grigorios Kyropoulos, Alberto Bessa Peixoto, Roxana Chirita, Anca Boldeanu
BACKGROUND: Agitation is an array of syndromes and types of behaviors that are common in patients with psychiatric disorders. In Europe, the estimation of prevalence of agitation has been difficult due to the lack of standard studies or systematic data collection done on this syndrome. OBJECTIVE: An observational, cross-sectional, multicenter study aimed to assess the prevalence of agitation episodes in psychiatric emergencies in different European countries. METHOD: For 1 week, all episodes of acute agitation that were attended to at the psychiatric emergency room (ER) or Acute Inpatient Unit (AIU) in the 27 participating centers were registered...
2016: Clinical Practice and Epidemiology in Mental Health: CP & EMH
https://www.readbyqxmd.com/read/27830351/antineutrophil-cytoplasmic-antibody-associated-glomerulonephritis-with-immunoglobulin-deposition
#17
Orie Hirose, Mitsuyo Itabashi, Takashi Takei, Kazuho Honda, Kosaku Nitta
BACKGROUND: Antineutrophil cytoplasmic antibody (ANCA)-associated glomerulonephritis is commonly classified as pauci-immune glomerulonephritis; however, some cases have granular immunoglobulin deposition along the glomerular capillary. The pathogenesis of immune deposits is poorly studied. METHODS: Of 66 patients diagnosed with ANCA-associated glomerulonephritis on renal biopsy, cases with immunoglobulin deposition along the glomerular capillary were identified and their clinicopathological characteristics were analyzed...
November 9, 2016: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/27813340/variation-in-treatment-of-children-hospitalized-with-antineutrophil-cytoplasmic-antibody-associated-vasculitis-in-the-united-states
#18
Karen E James, Rui Xiao, Peter A Merkel, Pamela F Weiss
OBJECTIVE: There are few reports on treatment of antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) in children. This study characterizes the use of cyclophosphamide, rituximab, and plasma exchange in children hospitalized with AAV in the United States. METHODS: We conducted a retrospective cohort study of children hospitalized with AAV from 2004-2014 utilizing an administrative and billing database from 47 tertiary care pediatric hospitals. All patients had an ICD-9-CM discharge code of 446...
November 3, 2016: Arthritis Care & Research
https://www.readbyqxmd.com/read/27752292/histone-modification-signature-at-myeloperoxidase-and-proteinase-3-in-patients-with-anti-neutrophil-cytoplasmic-autoantibody-associated-vasculitis
#19
Jiajin Yang, Heng Ge, Caroline J Poulton, Susan L Hogan, Yichun Hu, Britta E Jones, Candace D Henderson, Elizabeth A McInnis, William F Pendergraft, J Charles Jennette, Ronald J Falk, Dominic J Ciavatta
BACKGROUND: Anti-neutrophil cytoplasmic autoantibody (ANCA)-associated vasculitis (AAV) is a systemic autoimmune disease characterized by destructive vascular inflammation. Two prominent ANCA autoantigens are myeloperoxidase (MPO) and proteinase 3 (PR3), and transcription of MPO and PRTN3, the genes encoding the autoantigens, is associated with disease activity. We investigated whether patients with AAV have alterations in histone modifications, particularly those associated with transcriptional activation, at MPO and PRTN3...
2016: Clinical Epigenetics
https://www.readbyqxmd.com/read/27746047/ribonuclease-mediated-control-of-body-fat
#20
Cornelia Habacher, Yanwu Guo, Richard Venz, Pooja Kumari, Anca Neagu, Dimos Gaidatzis, Eva B Harvald, Nils J Færgeman, Heinz Gut, Rafal Ciosk
Obesity is a global health issue, arousing interest in molecular mechanisms controlling fat. Transcriptional regulation of fat has received much attention, and key transcription factors involved in lipid metabolism, such as SBP-1/SREBP, LPD-2/C/EBP, and MDT-15, are conserved from nematodes to mammals. However, there is a growing awareness that lipid metabolism can also be controlled by post-transcriptional mechanisms. Here, we show that the Caenorhabditis elegans RNase, REGE-1, related to MCPIP1/Zc3h12a/Regnase-1, a key regulator of mammalian innate immunity, promotes accumulation of body fat...
October 7, 2016: Developmental Cell
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