Tryptophan metabolism and brain function: focus on kynurenine and other indole metabolites
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References (181)
Glutamate neurotoxicity and diseases of the nervous system
1988 • 7,257 citations
Prevention of Allogeneic Fetal Rejection by Tryptophan Catabolism
1998 • 2,538 citations
Blockade of N -Methyl-D-Aspartate Receptors May Protect Against Ischemic Damage in the Brain
1984 • 1,689 citations
Replication of the neurochemical characteristics of Huntington's disease by quinolinic acid
1986 • 1,283 citations
Quinolinic Acid: An Endogenous Metabolite That Produces Axon-Sparing Lesions in Rat Brain
1983 • 1,247 citations
Pathological Changes Induced in Cerebrocortical Neurons by Phencyclidine and Related Drugs
1989 • 1,235 citations
Relationship between interferon‐γ, indoleamine 2,3‐dioxygenase, and tryptophan catabolism
1991 • 1,018 citations
Neuropharmacology of quinolinic and kynurenic acids.
1993 • 920 citations
Interferon gamma blocks the growth of Toxoplasma gondii in human fibroblasts by inducing the host cells to degrade tryptophan.
1984 • 847 citations
An iontophoretic investigation of the actions of convulsant kynurenines and their interaction with the endogenous excitant quinolinic acid
1982 • 834 citations
Selective Sparing of a Class of Striatal Neurons in Huntington's Disease
1985 • 767 citations
Quinolinic acid: A potent endogenous excitant at amino acid receptors in CNS
1981 • 728 citations
Blood–Brain Barrier Transport of Kynurenines: Implications for Brain Synthesis and Metabolism
1991 • 705 citations
QUINOLINIC ACID AND KYNURENINE PATHWAY METABOLISM IN INFLAMMATORY AND NON-INFLAMMATORY NEUROLOGICAL DISEASE
1992 • 655 citations
Systemic administration of MK-801 protects against ischemia-induced hippocampal neurodegeneration in the gerbil
1987 • 647 citations
Possible Therapeutic Applications of Antagonists of Excitatory Amino acid Neurotransmitters
1985 • 558 citations
Excitatory amino acid release and free radical formation may cooperate in the genesis of ischemia-induced neuronal damage
1990 • 510 citations
Human macrophages convert <scp>l</scp>-tryptophan into the neurotoxin quinolinic acid
1992 • 450 citations
3‐Hydroxykynurenine, an Endogenous Oxidative Stress Generator, Causes Neuronal Cell Death with Apoptotic Features and Region Selectivity
1998 • 417 citations
Excitotoxic Amino Acids and Neuropsychiatric Disorders
1990 • 407 citations
Quinolinic acid and other kynurenines in the central nervous system
1985 • 311 citations
1-methyl-dl-tryptophan, β-(3-benzofuranyl)-dl-alanine (the oxygen analog of tryptophan), and β-[3-benzo(b)thienyl]-dl-alanine (the sulfur analog of tryptophan) are competitive inhibitors for indoleamine 2,3-dioxygenase
1991 • 279 citations
Presence of Kynurenic Acid in the Mammalian Brain
1988 • 273 citations
Cerebral synthesis and release of kynurenic acid: an endogenous antagonist of excitatory amino acid receptors
1990 • 256 citations
Human microglia convert <scp>l</scp>-tryptophan into the neurotoxin quinolinic acid
1996 • 248 citations
Characterization of rat brain kynurenine aminotransferases I and II
1997 • 222 citations
The Adaptive Increase of the Tryptophan Peroxidase-Oxidase System of Liver
1951 • 214 citations
Different kynurenine pathway enzymes limit quinolinic acid formation by various human cell types
1997 • 214 citations
Induction of indoleamine 2,3-dioxygenase in mouse lung during virus infection.
1979 • 210 citations
Pharmacology and regional variations of quinolinic acid-evoked excitations in the rat central nervous system.
1983 • 209 citations
Nitric oxide inhibits indoleamine 2,3-dioxygenase activity in interferon-gamma primed mononuclear phagocytes.
1994 • 207 citations
Synthesis and Biochemical Evaluation ofN-(4-Phenylthiazol-2-yl)benzenesulfonamides as High-Affinity Inhibitors of Kynurenine 3-Hydroxylase
1997 • 199 citations
Differential sparing of somatostatin‐neuropeptide y and cholinergic neurons following striatal excitotoxin lesions
1989 • 197 citations
Glucocorticoid induction of the rat tryptophan oxygenase gene is mediated by two widely separated glucocorticoid-responsive elements.
1987 • 197 citations
On the excitotoxic properties of quinolinic acid, 2,3-piperidine dicarboxylic acids and structurally related compounds
1983 • 193 citations
3-Hydroxyanthranilate oxygenase activity is increased in the brains of Huntington disease victims.
1988 • 186 citations
THE CONVERSION OF TRYPTOPHAN TO KYNURENINE IN LIVER
1950 • 185 citations
Identification of quinolinic acid in rat and human brain tissue
1983 • 182 citations
A mechanism for increased quinolinic acid formation following acute systemic immune stimulation
1993 • 181 citations
[26] Indoleamine 2,3-dioxygenase
1987 • 176 citations
Prolonged exposure to submicromolar concentrations of quinolinic acid causes excitotoxic damage in organotypic cultures of rat corticostriatal system
1989 • 175 citations
Studies on indoleamine 2,3-dioxygenase. I. Superoxide anion as substrate.
1975 • 167 citations
The NMDA Receptor, NMDA Antagonists and Epilepsy Therapy
1992 • 165 citations
Mechanism of Delayed Increases in Kynurenine Pathway Metabolism in Damaged Brain Regions Following Transient Cerebral Ischemia
1993 • 164 citations
Two kynurenine aminotransferases in human brain
1991 • 159 citations
Inhibitors of kynurenine hydroxylase and kynureninase increase cerebral formation of kynurenate and have sedative and anticonvulsant activities
1994 • 157 citations
Cytotoxicity of 3-hydroxykynurenine in a neuronal hybrid cell line
1989 • 156 citations
Kynurenines and Seizures
1981 • 155 citations
Kynurenine Hydroxylase Inhibitors Reduce Ischemic Brain Damage: Studies with (m-Nitrobenzoyl)-Alanine (mNBA) and 3,4-Dimethoxy-[-N-4-(Nitrophenyl)Thiazol-2YL]-Benzenesulfonamide (Ro 61-8048) in Models of Focal or Global Brain Ischemia
1999 • 155 citations
Sources of the neurotoxin quinolinic acid in the brain of HIV-1-infected patients and retrovirus-infected macaques
1998 • 150 citations
Quinolinate neurotoxicity in cortical cell culture
1987 • 146 citations
Interleukin-4 inhibits indoleamine 2,3-dioxygenase expression in human monocytes
1994 • 145 citations
Interferons and indoleamine 2,3-dioxygenase: Role in antimicrobial and antitumor effects
1989 • 139 citations
Modulation of the Kynurenine Pathway in Search for New Neuroprotective Agents.Synthesis and Preliminary Evaluation of (m-Nitrobenzoyl)alanine, a Potent Inhibitor of Kynurenine-3-hydroxylase
1994 • 134 citations
Protection against quinolinic acid-mediated excitotoxicity in nigrostriatal dopaminergic neurons by endogenous kynurenic acid
1997 • 133 citations
The excitotoxin quinolinic acid is present and unevenly distributed in the rat brain
1984 • 132 citations
Neuroprotective Effects of L-Kynurenine on Hypoxia—Ischemia and NMDA Lesions in Neonatal Rats
1992 • 132 citations
Quantification of quinolinic acid in rat brain, whole blood, and plasma by gas chromatography and negative chemical ionization mass spectrometry: Effects of systemic l-tryptophan administration on brain and blood quinolinic acid concentrations
1988 • 126 citations
Synthesis of Quinolinic Acid by 3‐Hydroxyanthranilic Acid Oxygenase in Rat Brain Tissue In Vitro
1986 • 124 citations
Studien über den intermediären Stoffwechsel des Tryptophans XVIII—XXIV.
1936 • 122 citations
Localization of kynurenine aminotransferase immunoreactivity in the rat hippocampus
1992 • 122 citations
Regulation of nitric-oxide synthase mRNA expression by interferon-gamma and picolinic acid.
1994 • 119 citations
Kynurenine and probenecid inhibit pentylenetetrazol- and NMDLA-induced seizures and increase kynurenic acid concentrations in the brain
1992 • 116 citations
Regulation of indoleamine 2,3-dioxygenase gene expression in human fibroblasts by interferon-gamma. Upstream control region discriminates between interferon-gamma and interferon-alpha.
1990 • 112 citations
Modulation of seizure susceptibility in the mouse by the strychnine‐insensitive glycine recognition site of the NMDA receptor/ion channel complex
1990 • 109 citations
The excitotoxin quinolinic acid is present in the brain of several mammals and its cortical content increases during the aging process
1984 • 108 citations
High-affinity uptake of L-kynurenine by a Na+-independent transporter of neutral amino acids in astrocytes
1989 • 107 citations
Transcriptional regulation of the tryptophan oxygenase gene in rat liver by glucocorticoids.
1983 • 105 citations
Comparison of the Neurochemical and Behavioral Effects Resulting from the Inhibition of Kynurenine Hydroxylase and/or Kynureninase
1995 • 105 citations
The effects of a novel and selective inhibitor of tryptophan 2,3-dioxygenase on tryptophan and serotonin metabolism in the rat
1995 • 105 citations
Brain‐Specific Modulation of Kynurenic Acid Synthesis in the Rat
1997 • 103 citations
Modulation of Quinolinic and Kynurenic Acid Content in the Rat Brain: Effects of Endotoxins and Nicotinylalanine
1991 • 103 citations
Quinolinic acid accumulation and functional deficits following experimental spinal cord injury
1995 • 102 citations
Importance of the Two Interferon-stimulated Response Element (ISRE) Sequences in the Regulation of the Human Indoleamine 2,3-Dioxygenase Gene
1996 • 100 citations
4-Chloro-3-hydroxyanthranilate, 6-chlorotryptophan and norharmane attenuate quinolinic acid formation by interferon-γ-stimulated monocytes (THP-1 cells)
1993 • 97 citations
(R,S)-3,4-dichlorobenzoylalanine (FCE 28833A) causes a large and persistent increase in brain kynurenic acid levels in rats
1996 • 97 citations
Convulsant action of intracerebroventricularly administered l-kynurenine sulphate, quinolinic acid and other derivatives of succinic acid, and effects of amino acids: structure-activity relationships
1982 • 96 citations
THE role of indoleamine 2,3‐dioxygenase in the anti‐tumour activity of human interferon‐γ in vivo
1995 • 93 citations
Molecular cloning, sequencing and expression of human interferon-γ-inducible indoleamine 2,3-dioxygenase cDNA
1990 • 92 citations
MECHANISM OF DECLINE IN RAT BRAIN 5‐HYDROXYTRYPTAMINE AFTER INDUCTION OF LIVER TRYPTOPHAN PYRROLASE BY HYDROCORTISONE: ROLES OF TRYPTOPHAN CATABOLISM AND KYNURENINE SYNTHESIS
1981 • 91 citations
Nicotinylalanine Increases the Formation of Kynurenic Acid in the Brain and Antagonizes Convulsions
1992 • 88 citations
Interferon‐γ‐Induced Activation of Indoleamine 2,3‐Dioxygenase in Cord Blood Monocyte‐Derived Macrophages Inhibits the Growth of Group B Streptococci
1998 • 88 citations
Modulation of cellular tryptophan metabolism in human fibroblasts by transforming growth factor-β: Selective inhibition of indoleamine 2,3-dioxygenase and tryptophanyl-tRNA synthetase gene expression
1998 • 85 citations
REDUCED TRIPHOSPHOPYRIDINENUCLEOTIDE REQUIREMENT FOR THE ENZYMATIC FORMATION OF 3-HYDROXYKYNURENINE FROM L-KYNURENINE
1956 • 82 citations
3-Hydroxykynurenine Toxicity on the Rat Striatum In Vivo
1996 • 82 citations
Quinolinate differentiates between forebrain and cerebellar NMDA receptors
1991 • 81 citations
Kynurenine Disposition in Blood and Brain of Mice: Effects of Selective Inhibitors of Kynurenine Hydroxylase and of Kynureninase
1996 • 81 citations
Cloning and Functional Expression of a Soluble Form of Kynurenine/α -Aminoadipate Aminotransferase from Rat Kidney
1995 • 80 citations
THE KYNURENINE TRANSAMINASE OF RAT KIDNEY
1954 • 80 citations
Quantification of Local De Novo Synthesis Versus Blood Contributions to Quinolinic Acid Concentrations in Brain and Systemic Tissues
1997 • 78 citations
Isolation and characterization of a rat liver enzyme with both cysteine conjugate beta-lyase and kynureninase activity.
1985 • 76 citations
Kynurenine and Serotonin Pathways
1991 • 76 citations
Presynaptic mGlu1 type receptors potentiate transmitter output in the rat cortex
1998 • 75 citations
Presence of 3‐Hydroxyanthranilic Acid in Rat Tissues and Evidence for Its Production from Anthranilic Acid in the Brain
1990 • 74 citations
The preferred route of kynurenine metabolism in the rat
1982 • 74 citations
Inhibition of Nitric Oxide Synthase Expression and Activity in Macrophages by 3-Hydroxyanthranilic Acid, a Tryptophan Metabolite
1997 • 73 citations
Primary structure of human indoleamine 2,3-dioxygenase deduced from the nucleotide sequence of its cDNA
1990 • 72 citations
The role of mitochondrial matrix enzymes in the metabolism and toxicity of cysteine conjugates.
1988 • 71 citations
Neurotoxin Quinolinic Acid Is Selectively Elevated in Spinal Cords of Rats with Experimental Allergic Encephalomyelitis
1995 • 69 citations
Picolinic acid, a catabolite of tryptophan, as the second signal in the activation of IFN-gamma-primed macrophages.
1990 • 69 citations
Isolation and characterization of the rat tryptophan oxygenase gene.
1982 • 66 citations
Stereochemistry and mechanism of reactions catalyzed by tryptophanase Escherichia coli
1978 • 64 citations
Molecular cloning and functional expression of human 3-hydroxyanthranilic-acid dioxygenase.
1994 • 64 citations
S-Aryl-L-cysteine S,S-dioxides: design, synthesis, and evaluation of a new class of inhibitors of kynureninase
1993 • 64 citations
Nicotinylalanine increases cerebral kynurenic acid content and has anticonvulsant activity
1992 • 62 citations
Metal-mediated oxidative damage to cellular and isolated DNA by certain tryptophan metabolites
1995 • 62 citations
Much IDO about pregnancy
1998 • 62 citations
Interferon gamma-resistant mutants are defective in the induction of indoleamine 2,3-dioxygenase.
1989 • 61 citations
Neuroprotective agents and cerebral ischaemia
1997 • 61 citations
Delayed Increases in Regional Brain Quinolinic Acid Follow Transient Ischemia in the Gerbil
1990 • 59 citations
Interference with cellular energy metabolism reduces kynurenic acid formation in rat brain slices: reversal by lactate and pyruvate
1998 • 59 citations
Molecular cloning of rat kynurenine aminotransferase: Identity with glutamine transaminase K
1994 • 59 citations
Recent Advances in Tryptophan Research
1996 • 58 citations
Quinolinic Acid In Vivo Synthesis Rates, Extracellular Concentrations, and Intercompartmental Distributions in Normal and Immune‐Activated Brain as Determined by Multiple‐Isotope Microdialysis
1998 • 57 citations
Localization of quinolinic acid metabolizing enzymes in the rat brain. immunohistochemical studies using antibodies to 3-hydroxyanthranilic acid oxygenase and quinolinic acid phosphoribosyltransferase
1988 • 55 citations
Kynurenine pathway enzymes in a rat model of chronic epilepsy: Immunohistochemical study of activated glial cells
1993 • 55 citations
Isolation and expression of a cDNA coding for rat kidney cytosolic cysteine conjugate beta-lyase.
1993 • 55 citations
Identification of a mitochondrial form of kynurenine aminotransferase/glutamine transaminase K from rat brain
1995 • 55 citations
Metabolism of 6-chlorotryptophan to 4-chloro-3-hydroxyanthranilic acid: A potent inhibitor of 3-hydroxyanthranilic acid oxidase
1980 • 50 citations
Interferon: A mediator of indoleamine 2,3-dioxygenase induction by lipopolysaccharide, poly(I) · poly(C), and pokeweed mitogen in mouse lung
1986 • 50 citations
Beef kidney 3-hydroxyanthranilic acid oxygenase. Purification, characterization, and analysis of the assay.
1976 • 50 citations
Oxindole, a Sedative Tryptophan Metabolite, Accumulates in Blood and Brain of Rats with Acute Hepatic Failure
1998 • 49 citations
Regulatory Properties of Hepatic Tryptophan Oxygenase
1972 • 49 citations
Purification and Properties of 3-Hydroxyanthranilic Acid Oxidase
1961 • 49 citations
Immuno-localization of kynurenine aminotransferase (KAT) in the rat medulla and spinal cord
1997 • 46 citations
Factors influencing effect of hydrocortisone on rat brain tryptophan metabolism
1975 • 46 citations
Isolation and Expression of a cDNA Clone Encoding Human Kynureninase
1996 • 45 citations
Chapter 7 NMDA Antagonists: Their Role in Neuroprotection
1996 • 44 citations
Cloning and functional expression of human kynurenine 3‐monooxygenase
1997 • 43 citations
A comparison of the effects of N-methyl-d-aspartate and quinolinate on central neurones of the rat
1984 • 43 citations
Brain Tryptophan Hydroxylation in the Portacaval Shunted Rat: A Hypothesis for the Regulation of Serotonin Turnover In Vivo
1991 • 43 citations
Organ Distribution of Rat Kynureninase and Changes of Its Activity during Development
1988 • 42 citations
The glycine antagonist and free radical scavenger 7-C1-thio-kynurenate reduces CA1 ischemic damage in the gerbil
1994 • 42 citations
A radiometric assay for kynurenine 3-hydroxylase based on the release of 3H2O during hydroxylation of l-[3,5-3H]kynurenine
1992 • 42 citations
Quinolinic Acid in Neurological Disease: Opportunities for Novel Drug Discovery
1994 • 41 citations
Quinolinic acid formation in immune-activated mice: studies with (m-nitrobenzoyl)-alanine (mNBA) and 3,4-dimethoxy-[-N-4-(-3-nitrophenyl) thiazol-2yl]-benzenesulfonamide (Ro 61-8048), two potent and selective inhibitors of kynurenine hydroxylase
1999 • 40 citations
Increased Concentrations of 3‐Hydroxykynurenine in Vitamin B6 Deficient Neonatal Rat Brain
1987 • 39 citations
Experimental convulsions in rats induced by intra ventricular administration of kynurenine and structurally related compounds
1984 • 39 citations
Cloning and Characterization of a Soluble Kynurenine Aminotransferase from Rat Brain: Identity with Kidney Cysteine Conjugate β‐Lyase
1995 • 37 citations
Pretreatment with l-kynurenine, the precursor to the excitatory amino acid antagonist kynurenic acid, suppresses epileptiform activity in combined entorhinal/hippocampal slices
1997 • 35 citations
Deduced primary structure of rat tryptophan-2,3-dioxygenase
1990 • 34 citations
Tryptophan reversal of recombinant human gamma-interferon inhibition ofChlamydia trachomatis growth
1987 • 34 citations
Quinolinic Acid and the Kynurenines
1988 • 33 citations
Tryptophan and its metabolite, kynurenine, stimulate expression of nerve growth factor in cultured mouse astroglial cells
1998 • 32 citations
3-Hydroxyanthranilic acid oxygenase-containing astrocytic processes surround glutamate-containing axon terminals in the rat striatum
1995 • 31 citations
High Activities of Glutamine Transaminase K (Dichlorovinylcysteine β‐Lyase) and ω‐Amidase in the Choroid Plexus of Rat Brain
1993 • 31 citations
6-Chloro-d,l-tryptophan, 4-chloro-3-hydroxyanthranilate and dexamethasone attenuate quinolinic acid accumulation in brain and blood following systemic immune activation
1994 • 30 citations
Localization of quinolinic acid in the murine AIDS model of retrovirus-induced immunodeficiency: implications for neurotoxicity and dendritic cell immunopathogenesis
1996 • 30 citations
Neuroprotective Effects of Kynurenine-3-Hydroxylase Inhibitors in Models of Brain Ischemia
1999 • 30 citations
Different stereoselectivity of the enantiomers of HA-966 (3-amino-1-hydroxy-2-pyrrolidinone) for neuroprotective and anticonvulsant actions in vivo
1991 • 30 citations
Intramitochondrial Localization of Kynurenine Aminotransferase
1970 • 29 citations
Immunohistochemical localization of indoleamine 2,3-dioxygenase in the argyrophilic cells of rabbit duodenum and thyroid gland.
1981 • 29 citations
[3H]Homoquinolinate Binds to a Subpopulation of NMDA Receptors and to a Novel Binding Site
1998 • 28 citations
Studies on the Biological Activity of Nicotinylalanine, an Analogue of Kynurenine
1963 • 27 citations
L-Kynurenine 3-Monooxygenase from Mitochondrial Outer Membrane of Pig Liver: Purification, Some Properties, and Monoclonal Antibodies Directed to the Enzyme
1998 • 25 citations
Induction of Indoleamine 2,3-Dioxygenase in Tumor Cells Transplanted into Allogeneic Mouse: Interferon-γ is the Inducer
1991 • 24 citations
Cloning and recombinant expression of rat and human kynureninase
1997 • 23 citations
Synthesis and activity of enantiopure (S) (m-nitrobenzoyl) alanine, potent kynurenine-3-hydroxylase inhibitor
1995 • 23 citations
Regrowth of cholinergic and catecholaminergic neurons along a peripheral and central nervous pathway
1985 • 22 citations
Regulation of the Kynurenine Pathway by IFN-γ in Murine Cloned Macrophages and Microglial Cells
1996 • 22 citations
Depressor effect of kynurenine and its metabolites in rats
1976 • 20 citations
Experimental studies on kynurenines as neuroactive tryptophan metabolites: past, present and future
1980 • 19 citations
Neuropsychiatry Implications of Brain Tryptophan Perturbations Appearing in Hepatic Encephalopathy
1996 • 18 citations
Recent Advances in Tryptophan Research: Tryptophan and Serotonin Pathways
2011 • 18 citations
Identification and Measurement of Oxindole (2-Indolinone) in the Mammalian Brain and Other Rat Organs
1997 • 17 citations
Effects of 540C91 [(E)-3-[2-(4′pyridyl)-vinyl]-1H-indole], an inhibitor of hepatic tryptophan dioxygenase, on brain quinolinic acid in mice
1996 • 16 citations
Full length article
1997 • 16 citations
Kynureninase and Kynurenine 3-Hydroxylase in Mammalian Tissues
1991 • 15 citations
Preliminary X-ray crystallographic analysis of tryptophanase fromEscherichia coli
1991 • 14 citations
Effects of Mitochondria and O‐Methoxybenzoylalanine on 3‐Hydroxyanthranilic Acid Dioxygenase Activity and Quinolinic Acid Synthesis
1999 • 12 citations
Isolation and characterization of an hydroxykynureninase from homogenates of adult mouse liver
1973 • 11 citations
Discovery of a novel and alternate hydrogen peroxide generation machinery in the mammalian thyroid gland that modulates iodination of tyrosine
1990 • 10 citations
Indoleamine Dioxygenase - a Possible Biological Function
1984 • 10 citations
Kynurenine Hydroxylase and Kynureninase Inhibitors as Tools to Study the Role of Kynurenine Metabolites in the Central Nervous System
1996 • 10 citations
Molecular Characterisation of Kynurenine Pathway Enzymes
1996 • 9 citations
Effects of central administration of kynurenic acid on spontaneous locomotor activity in the kindled rat: A multivariate approach using the automated digiscan monitoring system
1992 • 9 citations
SOME NEW COMPOUNDS EXHIBITING SELECTIVE CNS-DEPRESSANT ACTIVITIES. I. PRELIMINARY OBSERVATIONS.
1964 • 8 citations
NMDA receptor heterogeneity in mammalian tissues: focus on two agonists, (2S,3R,4S) cyclopropylglutamate and the sulfate ester of 4-hydroxy-(S)-pipecolic acid
1995 • 8 citations
Kynurenine and probenecid prevent quinolinic acid-induced neurotoxicity in rat corpus striatum.
1994 • 3 citations
ChemInform Abstract: Synthesis and Activity of Enantiopure (S) (m-Nitrobenzoyl)alanine, a Potent Kynurenine-3-hydroxylase Inhibitor.
1995 • 2 citations
Deleted Work
1955 • 0 citations
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