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Adenosine deaminase

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https://www.readbyqxmd.com/read/28648009/-diagnostic-performance-of-t-spot-tb-on-peripheral-blood-in-combination-with-adenosine-deaminase-on-pleural-fluid-for-the-diagnosis-of-tuberculous-pleurisy-within-different-age-group
#1
H Y Xu, D Q Zhang, J R Ye, S S Su, Y P Xie, C S Chen, Y P Li
Objective: To evaluate the performance of T cell enzyme-linked immuno-spot assay (T-SPOT) on peripheral blood in combination with adenosine deaminase (ADA) on pleural fluid for diagnosis of tuberculous (TB) pleurisy within different age groups. Methods: The data of patients with pleural effusion from the Department of Pulmonary and Critical Care Medicine of the First Affiliated Hospital of Wenzhou Medical University from April 2012 to November 2016 were retrospectively analyzed, and the diagnoses of these patients were histopathologically confirmed through medical thoracoscopy...
June 27, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28640668/absence-of-the-fragile-x-mental-retardation-protein-results-in-defects-of-rna-editing-of-neuronal-mrnas-in-mouse
#2
Alice Filippini, Daniela Bonini, Caroline Lacoux, Laura Pacini, Maria Zingariello, Laura Sancillo, Daniela Bosisio, Valentina Salvi, Jessica Mingardi, Luca La Via, Francesca Zalfa, Claudia Bagni, Alessandro Barbon
The fragile X syndrome (FXS), the most common form of inherited intellectual disability, is due to the absence of FMRP, a protein regulating RNA metabolism. Recently, an unexpected function of FMRP in modulating the activity of Adenosine Deaminase Acting on RNA (ADAR) enzymes has been reported both in Drosophila and Zebrafish. ADARs are RNA-binding proteins that increase transcriptional complexity through a post-transcriptional mechanism called RNA editing. In order to evaluate the ADAR2-FMRP interaction in mammals we analysed several RNA editing re-coding sites in the fmr1 knockout (KO) mice...
June 22, 2017: RNA Biology
https://www.readbyqxmd.com/read/28640667/restricting-retrotransposons-adar1-is-another-guardian-of-the-human-genome
#3
Elisa Orecchini, Loredana Frassinelli, Alessandro Michienzi
ADAR1 is an enzyme that belongs to the Adenosine Deaminases Acting on RNA (ADARs) family. These enzymes deaminate adenosines to inosines (RNA editing A-to-I) within double-stranded RNA regions in transcripts. Since inosines are recognized as guanosines by the cellular machinery, RNA editing mediated by ADARs can either lead to the formation of an altered protein (recoding) or affect different aspects of RNA metabolism. Recently, a proteomic analysis led to the identification of novel ADAR1-associated factors and found that a good fraction of them is shared with the Long Interspersed Element 1 (LINE-1 or L1) ribonucleoparticles (RNPs)...
June 22, 2017: RNA Biology
https://www.readbyqxmd.com/read/28638227/relationship-between-serum-adenosine-deaminase-levels-and-liver-histology-in-autoimmune-hepatitis
#4
Murat Torgutalp, Cumali Efe, Hakan Babaoglu, Taylan Kav
AIM: To evaluate the relationship between serum adenosine deaminase (ADA) levels and histological features in patients with autoimmune hepatitis (AIH). METHODS: A total of 80 subjects (52 AIH cases and 28 healthy controls) were included in the study. Patients were diagnosed according to the simplified criteria suggested by the International Autoimmune Hepatitis Group. All of the cases had been diagnosed with AIH between 2010-2015 at Hacettepe University, Department of Gastroenterology...
June 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28620107/cicalese-mp-ferrua-f-castagnaro-l-et-al-update-on-the-safety-and-efficacy-of-retroviral-gene-therapy-for-immunodeficiency-due-to-adenosine-deaminase-deficiency-blood-2016-128-1-45-54
#5
https://www.readbyqxmd.com/read/28601223/adenosine-deaminases-that-act-on-rna-adars
#6
Yuru Wang, Yuxuan Zheng, Peter A Beal
Inosine is one of the most common modifications found in human RNAs and the Adenosine Deaminases that act on RNA (ADARs) are the main enzymes responsible for its production. ADARs were first discovered in the 1980s and since then our understanding of ADARs has advanced tremendously. For instance, it is now known that defective ADAR function can cause human diseases. Furthermore, recently solved crystal structures of the human ADAR2 deaminase bound to RNA have provided insights regarding the catalytic and substrate recognition mechanisms...
2017: Enzymes
https://www.readbyqxmd.com/read/28600963/ultra-performance-liquid-chromatography-tandem-mass-spectrometry-based-multiplex-enzyme-assay-for-six-enzymes-associated-with-hereditary-hemolytic-anemia
#7
Chul Min Park, Kyunghoon Lee, Sun-Hee Jun, Sang Hoon Song, Junghan Song
Deficiencies in erythrocyte metabolic enzymes are associated with hereditary hemolytic anemia. Here, we report the development of a novel multiplex enzyme assay for six major enzymes, namely glucose-6-phosphate dehydrogenase, pyruvate kinase, pyrimidine 5'-nucleotidase, hexokinase, triosephosphate isomerase, and adenosine deaminase, deficiencies in which are implicated in erythrocyte enzymopathies. To overcome the drawbacks of traditional spectrophotometric enzyme assays, the present assay was based on ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS)...
June 3, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28594948/easy-and-non-invasive-disease-detection-in-pigs-by-adenosine-deaminase-activity-determinations-in-saliva
#8
Ana María Gutiérrez, Ernesto De La Cruz-Sánchez, Ana Montes, Juan Sotillo, Cándido Gutiérrez-Panizo, Pablo Fuentes, Pedro Luis Tornel, Juan Cabezas-Herrera
The quantification of adenosine deaminase (ADA) in porcine saliva samples has been analyzed for its use as a marker of disease. First, an analytical validation of the enzymatic assay used for ADA measurements was performed. Afterwards, saliva samples were collected from 50 healthy animals and 64 animals with different symptoms of disease, which were divided into local inflammation, gastrointestinal disorder, respiratory disorder and growth retardation. To optimize ADA measurements, total ADA (tADA), specific ADA (sADA) and ADA isoforms 1 and 2 activities were calculated...
2017: PloS One
https://www.readbyqxmd.com/read/28584637/identification-of-global-transcriptome-abnormalities-and-potential-biomarkers-in-eutopic-endometria-of-women-with-endometriosis-a-preliminary-study
#9
Luyang Zhao, Chenglei Gu, Mingxia Ye, Zhe Zhang, Weidong Han, Wensheng Fan, Yuanguang Meng
The etiology and pathophysiology of endometriosis remain unclear. The aim of the current study was to identify a candidate pathogenic gene, as well as potential biomarkers of endometriosis using messenger RNA (mRNA) sequencing (mRNA-seq). Twenty-three eutopic endometria from women with endometriosis and 20 endometria from control subjects were investigated. Eight eutopic endometria and five normal endometria were selected for mRNA-seq. Differentially expressed genes (DEGs) were identified and functional analysis was conducted...
June 2017: Biomedical Reports
https://www.readbyqxmd.com/read/28582318/recent-advances-in-childhood-vasculitis
#10
Seza Ozen, Nazire Pinar Acar-Ozen
PURPOSE OF REVIEW: The review aims to summarize the recent findings in vasculitis that may have an impact in our understanding or management of these diseases. RECENT FINDINGS: We are learning more about monogenic diseases that closely mimic the pediatric vasculitides. Deficiency of adenosine deaminase 2 can present with a polyarteritis nodosa (PAN)-like picture and should be included in the differential of all pediatric cases of PAN with a family history or in cases with early stroke, or in cases resistant to conventional therapy...
June 2, 2017: Current Opinion in Rheumatology
https://www.readbyqxmd.com/read/28571185/determination-and-validation-of-a-lower-cut-off-value-of-cerebrospinal-fluid-adenosine-deaminase-csf-ada-activity-in-diagnosis-of-tuberculous-meningitis
#11
Raviraj, Renoy A Henry, G Ganapathi Rao
INTRODUCTION: Tuberculous meningitis is an infection of the meninges caused by Mycobacterium tuberculosis. It is one of the most common infectious diseases of the Central Nervous System (CNS) and a major health problem in developing countries like India. If there is delay in diagnosis and initiation of specific treatment, it causes significant morbidity and mortality. CSF-ADA 10 U/l is the standard cut off value that is used for differentiation between Tuberculous (TBM) and Non-Tuberculous Meningitis (non-TBM)...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28559490/adar-rna-editing-below-the-backbone
#12
Liam P Keegan, Anzer Khan, Dragana Vukic, Mary A O'Connell
ADAR RNA editing enzymes (Adenosine Deaminases acting on RNA), that convert adenosine bases to inosines were first identified biochemically thirty years ago. Since then studies on ADARs in genetic model organisms, and evolutionary comparisons between them, continue to reveal a surprising range of pleiotropic biological effects of ADARs. This review focuses on Drosophila melanogaster, which has a single Adar gene encoding a homolog of vertebrate ADAR2 that site-specifically edits hundreds of transcripts to change individual codons in ion channel subunits and membrane and cytoskeletal proteins...
May 30, 2017: RNA
https://www.readbyqxmd.com/read/28547528/manganese-ii-chloride-alters-nucleotide-and-nucleoside-catabolism-in-zebrafish-danio-rerio-adult-brain
#13
Stefani Altenhofen, Débora Dreher Nabinger, Talita Carneiro Brandão Pereira, Carlos Eduardo Leite, Maurício Reis Bogo, Carla Denise Bonan
ATP and adenosine, the main signaling molecules of purinergic system, are involved in toxicological effects induced by metals. The manganese (Mn) exposure induces several cellular changes, which could interfere with signaling pathways, such as the purinergic system. In this study, we evaluated the effects of exposure to manganese(II) chloride (MnCl2) during 96 h on nucleoside triphosphate diphosphohydrolase (NTPDase), ecto-5'-nucleotidase, and adenosine deaminase (ADA) activities, followed by analyzing the gene expression patterns of NTPDases (entpd1, entpd2a...
May 25, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28547523/cutaneous-manifestations-of-medium-and-large-vessel-vasculitis
#14
REVIEW
Francois Chasset, Camille Francès
Dermatologic manifestations are observed in almost all systemic vasculitides, even in large-and medium-vessel vasculitides, although such vessels are not found in the skin. Cutaneous manifestations may be related to a direct skin localization of the systemic vasculitis or a non-specific process associated with the vasculitis. According to the 2012 International Chapel Hill consensus, the two major variants of large-vessel vasculitides are Takayasu arteritis and giant-cell arteritis. In Europe and North America, acute inflammatory nodules or erythema nodosum-like lesions are the most commonly observed skin lesions with Takayasu arteritis...
May 26, 2017: Clinical Reviews in Allergy & Immunology
https://www.readbyqxmd.com/read/28546114/melaleuca-alternifolia-essential-oil-prevents-alterations-to-purinergic-enzymes-and-ameliorates-the-innate-immune-response-in-silver-catfish-infected-with-aeromonas-hydrophila
#15
Matheus D Baldissera, Carine F Souza, Pedro H Doleski, Agueda C de Vargas, Marta M M F Duarte, Thiago Duarte, Aline A Boligon, Daniela B R Leal, Bernardo Baldisserotto
Aeromonas hydrophila infection represents a major impediment to the development of aquaculture, leading to important economic losses. Over the last few years, different methods have been used to counteract and minimize the negative effects of this infection, such as the use of Melaleuca alternifolia essential oil, popularly known as tea tree oil (TTO), that possess a bactericide action against A. hydrophila. The purinergic system develops an important role in the inflammatory response, principally due to involvement of adenosine triphosphate (ATP) in the inflammatory process, as well as by the anti-inflammatory properties of adenosine (Ado), a molecule that is controlled by NTPDase, 5'-nucleotidase and adenosine deaminase (ADA) enzymes...
May 22, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28539531/synergistic-activity-of-an-antimetabolite-drug-and-tyrosine-kinase-inhibitors-against-breast-cancer-cells
#16
Yushan Wu, Dongxing Zhang, Baofan Wu, Yuan Quan, Dongwu Liu, Yanyan Li, Xiuzhen Zhang
Antimetabolite drugs, including the adenosine deaminase inhibitor cladribine, have been shown to induce apoptosis in a variety of cancer cells, and have been widely used in clinical trials of various cancers in conjunction with tyrosine kinase inhibitors (TKIs). Combination treatment with cladribine and gefitinib or dasatinib is expected to have a synergistic inhibitory effect on breast cancer cell growth. Our results demonstrated that the combination treatment had synergistic activity against MCF-7 cells, enhanced G2/M cell arrest and ROS generation, and increased the loss of mitochondrial membrane potential and cell apoptosis...
May 25, 2017: Chemical & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28534507/cecr1-mediated-cross-talk-between-macrophages-and-vascular-mural-cells-promotes-neovascularization-in-malignant-glioma
#17
C Zhu, I Chrifi, D Mustafa, M van der Weiden, P J M Leenen, D J Duncker, J M Kros, C Cheng
Glioblastomas (glioblastoma multiforme, GBM) are most malignant brain tumors characterized by profound vascularization. The activation of macrophages strongly contributes to tumor angiogenesis during GBM development. Previously, we showed that extracellular adenosine deaminase protein Cat Eye Syndrome Critical Region Protein 1 (CECR1) is highly expressed by M2-like macrophages in GBM where it defines macrophage M2 polarization and contributes to tumor expansion. In this study, the effect of CECR1 in macrophages on tumor angiogenesis was investigated...
May 22, 2017: Oncogene
https://www.readbyqxmd.com/read/28527816/adar1-is-targeted-by-mir-143-to-regulate-il-1%C3%AE-induced-endothelial-activation-through-the-nf%C3%AE%C2%BAb-pathway
#18
Yuanzhuo Chen, Hu Peng, Shuqin Zhou, Yugang Zhuang
Excessive endothelial activation by inflammatory mediators is a critical contributing factor of sepsis pathophysiology. ADAR1 (adenosine deaminase acting on RNA), an enzyme that binds and edits double-stranded RNAs, exhibits immune regulatory properties. Whether ADAR1 is involved in the pathophysiology of sepsis is unclear. In the present study, we used human umbilical endothelial cells (HUVECs) as an in vitro model system to investigate the roles of ADAR1 in interleukin (IL)-1β-induced endothelial activation...
May 17, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/28526754/oxygenation-and-adenosine-deaminase-support-growth-and-proliferation-of-ex-vivo-cultured-drosophila-wing-imaginal-discs
#19
Katrin Strassburger, Franziska K Lorbeer, Marilena Lutz, Fabian Graf, Michael Boutros, Aurelio A Teleman
The Drosophila wing imaginal disc has been an important model system over the past decades for discovering novel biology related to development, signaling, and epithelial morphogenesis. Novel experimental approaches would be enabled by a culturing setup allowing ex vivo cultures of wing discs. Current setups, however, are not able to sustain both growth and cell-cycle progression of wing discs ex vivo. We discover here a setup requiring both oxygenation of the tissue and adenosine deaminase activity in the medium, which supports both growth and proliferation of wing discs for 9 hours...
May 19, 2017: Development
https://www.readbyqxmd.com/read/28522451/ada2-deficiency-dada2-as-an-unrecognised-cause-of-early-onset-polyarteritis-nodosa-and-stroke-a-multicentre-national-study
#20
Roberta Caorsi, Federica Penco, Alice Grossi, Antonella Insalaco, Alessia Omenetti, Maria Alessio, Giovanni Conti, Federico Marchetti, Paolo Picco, Alberto Tommasini, Silvana Martino, Clara Malattia, Romina Gallizi, Rosa Anna Podda, Annalisa Salis, Fernanda Falcini, Francesca Schena, Francesca Garbarino, Alessia Morreale, Manuela Pardeo, Claudia Ventrici, Chiara Passarelli, Qing Zhou, Mariasavina Severino, Carlo Gandolfo, Gianluca Damonte, Alberto Martini, Angelo Ravelli, Ivona Aksentijevich, Isabella Ceccherini, Marco Gattorno
OBJECTIVES: To analyse the prevalence of CECR1 mutations in patients diagnosed with early onset livedo reticularis and/or haemorrhagic/ischaemic strokes in the context of inflammation or polyarteritis nodosa (PAN). Forty-eight patients from 43 families were included in the study. METHODS: Direct sequencing of CECR1 was performed by Sanger analysis. Adenosine deaminase 2 (ADA2) enzymatic activity was analysed in monocyte isolated from patients and healthy controls incubated with adenosine and with or without an ADA1 inhibitor...
May 18, 2017: Annals of the Rheumatic Diseases
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