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Adenosine deaminase

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https://www.readbyqxmd.com/read/28454247/ampd3-is-associated-with-the-malignant-characteristics-of-gastrointestinal-stromal-tumors
#1
Meihong Wong, Kohei Funasaka, Tomohiko Obayashi, Ryoji Miyahara, Yoshiki Hirooka, Michinari Hamaguchi, Hidemi Goto, Takeshi Senga
Gastrointestinal stromal tumors (GISTs) are mesenchymal tumors of the gastrointestinal tract. It is well known that activating mutations in the receptor tyrosine kinases KIT and platelet-derived growth factor receptor-α have essential roles in the pathogenesis of GISTs. The activation of these receptor protein kinases triggers multiple signaling pathways that promote cell proliferation and survival; however, the exact mechanism by which the activation of these kinases promotes the progression of GISTs remains uncertain...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28453746/activation-of-cecr1-in-m2-like-tams-promotes-paracrine-stimulation-mediated-glial-tumor-progression
#2
Changbin Zhu, Dana Mustafa, Ping-Pin Zheng, Marcel van der Weiden, Andrea Sacchetti, Maarten Brandt, Ihsan Chrifi, Dennie Tempel, Pieter J M Leenen, Dirk Jan Duncker, Caroline Cheng, Johan M Kros
Background.: The majority of glioma-associated microglia/macrophages have been identified as M2-type macrophages with immune suppressive and tumor supportive action. Recently, the extracellular adenosine deaminase protein Cat Eye Syndrome Critical Region Protein 1 (CECR1) was shown to regulate macrophage maturation. In this study, we investigate the role of CECR1 in the regulation of the glioma-associated macrophage response. Methods.: Expression of CECR1 was assessed in human glioma samples...
May 1, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28449374/genetic-variability-in-adenosine-deaminase-like-contributes-to-variation-in-alcohol-preference-in-mice
#3
Heidi M B Lesscher, Alexis Bailey, Louk J M J Vanderschuren
BACKGROUND: A substantial part of the risk for alcohol use disorder (AUD) is determined by genetic factors. We previously used chromosome substitution (CSS) mice, to identify a QTL for alcohol preference on mouse chromosome 2. The aim of this study was to identify candidate genes within this QTL that confer the risk for alcohol preference. METHODS: In order to delineate the neurobiological underpinnings of alcohol consumption, we expanded on the QTL approach to identify candidate genes for high alcohol preference in mice...
April 27, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28433200/the-case-against-performing-pleural-biopsies-for-the-aetiological-diagnosis-of-exudates
#4
J M Porcel
In most cases, the etiological diagnosis of pleural exudates does not require a pleural biopsy. However, when it is considered necessary, the biopsy should seldom be conducted using invasive methods such as thoracoscopy. Two paradigmatic examples are pleural tuberculosis and malignant effusions. In many centres, pleural fluid adenosine deaminase measurement has replaced closed pleural biopsies in the diagnosis of tuberculosis. Similarly, pathological and molecular studies on pleural fluid cell blocks or alternatively, image-guided pleural biopsies have drastically reduced the need for thoracoscopy...
April 19, 2017: Revista Clínica Española
https://www.readbyqxmd.com/read/28432556/enzymes-that-hydrolyze-adenine-nucleotides-in-a-model-of-hypercholesterolemia-induced-by-triton-wr-1339-protective-effects-of-%C3%AE-caryophyllene
#5
Matheus D Baldissera, Carine F Souza, Pedro H Doleski, Daniela B R Leal, Lenita M Stefani, Aline A Boligon, Silvia G Monteiro
Purinergic system has been proven to play a critical role in the inflammatory process and to represent an important therapeutic target to improve the immune response during hypercholesterolemia. β-caryophyllene, a phytocannabinoid compound, has a powerful hypolipidemic and anti-inflammatory actions. However, the effects of β-caryophyllene on seric enzymes of purinergic system have not been evaluated. The purpose of this study was to investigate whether β-caryophyllene is able to ameliorate the seric activities of NTPDase and adenosine deaminase (ADA) in a model of hypercholesterolemia induced by Triton WR-1339...
April 21, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28429285/the-organogermanium-compound-ge-132-interacts-with-nucleic-acid-components-and-inhibits-the-catalysis-of-adenosine-substrate-by-adenosine-deaminase
#6
Yasuhiro Shimada, Katsuyuki Sato, Tomoya Takeda, Yoshihiko Tokuji
Poly-trans-[(2-carboxyethyl)germasesquioxane] (Ge-132) is a water-soluble organogermanium compound that exerts various physiological effects, including anti-inflammatory activity and pain relief. In water, Ge-132 is hydrolyzed to 3-(trihydroxygermyl)propanoic acid (THGP), which in turn is capable of interacting with cis-diol compounds through its trihydroxy group, indicating that this compound could also interact with diol-containing nucleic acid constituents. In this study, we evaluated the ability of THGP to interact with nucleosides or nucleotides via nuclear magnetic resonance (NMR) analysis...
April 20, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28427701/multiple-sclerosis-showing-elevation-of-adenosine-deaminase-levels-in-the-cerebrospinal-fluid
#7
Miharu Samuraki, Kenji Sakai, Yasuko Odake, Mitsuhiro Yoshita, Kouichi Misaki, Mitsutoshi Nakada, Masahito Yamada
An 80-year-old man developed dysarthria, quadriplegia, sensory disturbance and ataxia in all limbs. Brain and spinal magnetic resonance imaging (MRI) revealed multiple enhanced lesions. Cerebrospinal fluid (CSF) levels of adenosine deaminase (ADA) remarkably elevated. Tuberculosis DNA was not detected, and tuberculosis was not cultured either in the CSF. Brain biopsy revealed the inflammatory demyelinating lesions. With the diagnosis of multiple sclerosis, corticosteroid therapy resulted in rapid improvement of his symptoms and MRI abnormalities...
April 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/28417934/expression-of-adenosine-a2b-receptor-and-adenosine-deaminase-in-rabbit-gastric-mucosa-ecl-cells
#8
Rosa María Arin, Ana Isabel Vallejo, Yuri Rueda, Olatz Fresnedo, Begoña Ochoa
Adenosine is readily available to the glandular epithelium of the stomach. Formed continuously in intracellular and extracellular locations, it is notably produced from ATP released in enteric cotransmission. Adenosine analogs modulate chloride secretion in gastric glands and activate acid secretion in isolated parietal cells through A2B adenosine receptor (A2BR) binding. A functional link between surface A2BR and adenosine deaminase (ADA) was found in parietal cells, but whether this connection is a general feature of gastric mucosa cells is unknown...
April 12, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28414287/-metabolic-effects-of-combined-introduction-of-adrenalin-and-blocker-of-methanoprolol-beta-adrenophyleters
#9
S O Tapbergenov, B S Sovetov, A T Tapbergenov, Elina Hahn
The effect of combined administration of adrenaline (0.4 mg/kg, i.p.) and b1-blocker metoprolol (25 mg/kg) on the activity of glutathione peroxidase (GPO), glutathione reductase (GR), catalase, adenosine deaminase (AD), AMP deaminase (AMPD), 5¢-nucleotidase (5¢N), on the level ofmalonic dialdehyde (MDA) and conjugated dienes (CD) was investigated. In blood adrenaline administration to animals caused an increase in the activity of AMPD, AD, 5¢N and GPO, and the increase the level of CD in the blood increases...
March 2017: Biomedit︠s︡inskai︠a︡ Khimii︠a︡
https://www.readbyqxmd.com/read/28410823/the-case-for-performing-pleural-biopsies-for-the-aetiological-diagnosis-of-exudates-yes
#10
F Rodriguez-Panadero
Pleural biopsies are especially indicated in the following circumstances: a) inconclusive pleural fluid analysis and negative sputum study, if adenosine deaminase (ADA) levels are unavailable; b) suspected multi-resistant tuberculosis; c) a need for differentiating tuberculous pleurisy (if it progresses with neutrophilia) and complicated parapneumonic effusion; d) malignant pleural effusion coexisting with very high ADA levels; e) effusion coexisting with lung cancer and negative pleural cytology; f) suspected mesothelioma; and g) need for implementing re-treatment for patients with relapse after chemotherapy...
April 12, 2017: Revista Clínica Española
https://www.readbyqxmd.com/read/28398248/adar1-and-microrna-a-hidden-crosstalk-in-cancer
#11
REVIEW
Charles J Cho, Seung-Jae Myung, Suhwan Chang
The evolution of cancer cells is believed to be dependent on genetic or epigenetic alterations. However, this concept has recently been challenged by another mode of nucleotide alteration, RNA editing, which is frequently up-regulated in cancer. RNA editing is a biochemical process in which either Adenosine or Cytosine is deaminated by a group of RNA editing enzymes including ADAR (Adenosine deaminase; RNA specific) or APOBEC3B (Apolipoprotein B mRNA Editing Enzyme Catalytic Subunit 3B). The result of RNA editing is usually adenosine to inosine (A-to-I) or cytidine to uridine (C-to-U) transition, which can affect protein coding, RNA stability, splicing and microRNA-target interactions...
April 11, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28395340/testicular-adenosine-to-inosine-rna-editing-in-the-mouse-is-mediated-by-adarb1%C3%A2-%C3%A2
#12
Elizabeth M Snyder, Konstantin Licht, Robert E Braun
Adenosine to inosine (A-to-I) RNA editing occurs in a wide range of tissues and cell types and can be catalyzed by one of the two adenosine deaminase acting on double-stranded RNA enzymes, ADAR and ADARB1. Editing can impact both coding and noncoding regions of RNA, and in higher organisms has been proposed to function in adaptive evolution. Neither the prevalence of A-to-I editing nor the role of either ADAR or ADARB1 has been examined in the context of germ cell development in mammals. Computational analysis of whole testis and cell-type specific RNA-sequencing data followed by molecular confirmation demonstrated that A-to-I RNA editing occurs in both the germ line and in somatic Sertoli cells in two targets, Cog3 and Rpa1...
January 1, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28373142/aflatoxins-produced-by-aspergillus-parasiticus-present-in-the-diet-of-quails-increase-the-activities-of-cholinesterase-and-adenosine-deaminase
#13
Aleksandro Schafer da Silva, Janio M Santurio, Lenilson F Roza, Nathieli B Bottari, Gabriela M Galli, Vera M Morsch, Maria Rosa C Schetinger, Matheus D Baldissera, Lenita M Stefani, Willian M Radavelli, Thainã Tomasi, Marcel M Boiago
The aim of this study was to evaluate the effects of aflatoxins on cholinesterases (acetylcholinesterase (AChE) and butyrylcholinesterase (BChE), and adenosine deaminase (ADA) activities in quails. For this, twenty male quails were randomly distributed into two groups (n = 10 each): the group A was composed by quails that received feed without aflatoxin (the control group); while the group B was composed by quails that received feed contaminated with 200 ppm/kg of feed of aflatoxin. On day 20, the animals were euthanized to measure the activities of AChE (total blood and brain), BChE (serum) and ADA (serum, liver, and brain), as well as for histopathological analyses (liver and intestine)...
March 31, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28367034/role-of-multiplex-polymerase-chain-reaction-in-diagnosing-tubercular-meningitis
#14
Anupam Berwal, Kiran Chawla, Shashidhar Vishwanath, Vishnu Prasad Shenoy
Tuberculous meningitis (TBM) is one of the most serious manifestations of extrapulmonary tuberculosis. Timely and accurate diagnosis provides a favorable prognosis in patients with TBM. The study evaluated the use of multiplex polymerase chain reaction (PCR) in the diagnosis of TBM. A study was conducted on 74 patients clinically suspected with TBM. The cerebrospinal fluid (CSF) specimens were processed for smear microscopy, middle brook 7H9 culture, and multiplex PCR using primers directed against IS6110 gene and 38 kD protein for detection of Mycobacterium tuberculosis...
April 2017: Journal of Laboratory Physicians
https://www.readbyqxmd.com/read/28366687/diagnostic-test-accuracy-of-adenosine-deaminase-for-tuberculous-meningitis-a%C3%A2-systematic-review-and-meta-analysis
#15
REVIEW
Ali Pormohammad, Seyed-Mohammad Riahi, Mohammad Javad Nasiri, Fatemeh Fallah, Mohammad Aghazadeh, Farahnoosh Doustdar, Ramin Pouriran
INTRODUCTION: The measurement of adenosine deaminase (ADA) level in cerebrospinal fluid (CSF) has generated as a suitable test for tuberculous meningitis (TBM) diagnosis. The main objective in the present meta-analysis focused on analyzing the ADA test accuracy in order to diagnose TBM. METHODS: We searched several databases including Medline, Embase and Cochrane databases to identify studies addressing the diagnosis of TBM. The quality of included reports were assessed by RevMan5 software (via QUADS2 checklist)...
March 31, 2017: Journal of Infection
https://www.readbyqxmd.com/read/28362255/ribonuclease-l-mediates-the-cell-lethal-phenotype-of-double-stranded-rna-editing-enzyme-adar1-deficiency-in-a-human-cell-line
#16
Yize Li, Shuvojit Banerjee, Stephen A Goldstein, Beihua Dong, Christina Gaughan, Sneha Rath, Jesse Donovan, Alexei Korennykh, Robert H Silverman, Susan R Weiss
ADAR1 isoforms are adenosine deaminases that edit and destabilize double-stranded RNA reducing its immunostimulatory activities. Mutation of ADAR1 leads to a severe neurodevelopmental and inflammatory disease of children, Aicardi-Goutiéres syndrome. In mice, Adar1 mutations are embryonic lethal but are rescued by mutation of the Mda5 or Mavs genes, which function in IFN induction. However, the specific IFN regulated proteins responsible for the pathogenic effects of ADAR1 mutation are unknown. We show that the cell-lethal phenotype of ADAR1 deletion in human lung adenocarcinoma A549 cells is rescued by CRISPR/Cas9 mutagenesis of the RNASEL gene or by expression of the RNase L antagonist, murine coronavirus NS2 accessory protein...
March 31, 2017: ELife
https://www.readbyqxmd.com/read/28346229/clinical-efficacy-of-gene-modified-stem-cells-in-adenosine-deaminase-deficient-immunodeficiency
#17
Kit L Shaw, Elizabeth Garabedian, Suparna Mishra, Provaboti Barman, Alejandra Davila, Denise Carbonaro, Sally Shupien, Christopher Silvin, Sabine Geiger, Barbara Nowicki, E Monika Smogorzewska, Berkley Brown, Xiaoyan Wang, Satiro de Oliveira, Yeong Choi, Alan Ikeda, Dayna Terrazas, Pei-Yu Fu, Allen Yu, Beatriz Campo Fernandez, Aaron R Cooper, Barbara Engel, Greg Podsakoff, Arumugam Balamurugan, Stacie Anderson, Linda Muul, G Jayashree Jagadeesh, Neena Kapoor, John Tse, Theodore B Moore, Ken Purdy, Radha Rishi, Kathey Mohan, Suzanne Skoda-Smith, David Buchbinder, Roshini S Abraham, Andrew Scharenberg, Otto O Yang, Kenneth Cornetta, David Gjertson, Michael Hershfield, Rob Sokolic, Fabio Candotti, Donald B Kohn
BACKGROUND: Autologous hematopoietic stem cell transplantation (HSCT) of gene-modified cells is an alternative to enzyme replacement therapy (ERT) and allogeneic HSCT that has shown clinical benefit for adenosine deaminase-deficient (ADA-deficient) SCID when combined with reduced intensity conditioning (RIC) and ERT cessation. Clinical safety and therapeutic efficacy were evaluated in a phase II study. METHODS: Ten subjects with confirmed ADA-deficient SCID and no available matched sibling or family donor were enrolled between 2009 and 2012 and received transplantation with autologous hematopoietic CD34+ cells that were modified with the human ADA cDNA (MND-ADA) γ-retroviral vector after conditioning with busulfan (90 mg/m2) and ERT cessation...
March 27, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28346055/a-to-i-editing-in-disease-is-not-fake-news
#18
Prajakta Bajad, Michael F Jantsch, Liam Keegan, Mary O'Connell
Adenosine deaminases acting on RNA (ADARs) are zinc-containing enzymes that deaminate adenosine bases to inosines within dsRNA regions in transcripts. In short, structured dsRNA hairpins individual adenosine bases may be targeted specifically and edited with up to one hundred percent efficiency, leading to the production of alternative protein variants. However, the majority of editing events occur within longer stretches of dsRNA formed by pairing of repetitive sequences. Here, many different adenosine bases are potential targets but editing efficiency is usually much lower...
March 27, 2017: RNA Biology
https://www.readbyqxmd.com/read/28330104/purification-and-characterization-of-the-enzymes-involved-in-nicotinamide-adenine-dinucleotide-degradation-by-penicillium-brevicompactum-nrc-829
#19
Thanaa Hamed Ali, Dina Helmy El-Ghonemy
The present study was conducted to investigate a new pathway for the degradation of nicotinamide adenine dinucleotide (NAD) by Penicillium brevicompactum NRC 829 extracts. Enzymes involved in the hydrolysis of NAD, i.e. alkaline phosphatase, aminohydrolase and glycohydrolase were determined. Alkaline phosphatase was found to catalyse the sequential hydrolysis of two phosphate moieties of NAD molecule to nicotinamide riboside plus adenosine. Adenosine was then deaminated by aminohydrolase to inosine and ammonia...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28325731/effects-of-genetic-deletion-of-soluble-5-nucleotidases-nt5c1a-and-nt5c2-on-ampk-activation-and-nucleotide-levels-in-contracting-mouse-skeletal-muscles
#20
Samanta Kviklyte, Didier Vertommen, Xavier Yerna, Harriet Andersén, Xiufeng Xu, Philippe Gailly, Mohammad Bohlooly-Y, Jan Oscarsson, Mark H Rider
AMP-activated protein kinase (AMPK) plays a key role in energy homeostasis and is activated in response to contraction-induced ATP depletion in skeletal muscle via a rise in intracellular AMP/ADP concentrations. AMP can be deaminated by AMP-deaminase to IMP, which is hydrolysed to inosine by cytosolic 5'-nucleotidase-II (NT5C2). AMP can also be hydrolysed to adenosine by cytosolic 5'-nucleotidase-IA (NT5C1A). Previous gene silencing and overexpression studies indicated control of AMPK activation by NT5C enzymes...
March 21, 2017: American Journal of Physiology. Endocrinology and Metabolism
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