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Molecular tools to study melatonin pathways and actions.
Melatonin, an indoleamine neurohormone that is synthesized mainly in the pineal gland and derived from 5-HT, has many effects on a wide range of physio-pathological functions. Some of these effectsExpand
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Activation of MMP‐9 by neutrophil elastase in an in vivo model of acute lung injury
The effect of neutrophil elastase on the functional status of gelatinases was studied in an hamster model developed by intratracheal administration of lipopolysaccharide followed by in situ cellExpand
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Role of a pineal cAMP-operated arylalkylamine N-acetyltransferase/14-3-3-binding switch in melatonin synthesis
The daily rhythm in melatonin levels is controlled by cAMP through actions on the penultimate enzyme in melatonin synthesis, arylalkylamine N-acetyltransferase (AANAT; serotonin N-acetyltransferase,Expand
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NRH:quinone reductase 2: an enzyme of surprises and mysteries.
Quinone reductase 2 has been discovered in 1961 and rediscovered in 1997. Because of its sequence homology with quinone reductase 1, it has been suspected to detoxify quinones. Ten years later,Expand
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S32826, A Nanomolar Inhibitor of Autotaxin: Discovery, Synthesis and Applications as a Pharmacological Tool
Autotaxin catalyzes the transformation of lyso-phosphatidylcholine in lyso-phosphatidic acid (LPA). LPA is a phospholipid possessing a large panel of activity, in particular as a motility factor orExpand
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The active conformation of human glucokinase is not altered by allosteric activators.
Glucokinase (GK) catalyses the formation of glucose 6-phosphate from glucose and ATP. A specific feature of GK amongst hexokinases is that it can cycle between active and inactive conformations as aExpand
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Autotaxin Is Released from Adipocytes, Catalyzes Lysophosphatidic Acid Synthesis, and Activates Preadipocyte Proliferation
Our group has recently demonstrated (Gesta, S., Simon, M., Rey, A., Sibrac, D., Girard, A., Lafontan, M., Valet, P., and Saulnier-Blache, J. S. (2002) J. Lipid Res. 43, 904–910) the presence, inExpand
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Characterization of the melatoninergic MT3 binding site on the NRH:quinone oxidoreductase 2 enzyme.
Melatonin acts through a series of molecular targets: the G-protein coupled receptors, MT1 and MT2, and a third binding site, MT3, recently identified as the enzyme NRH:quinone oxydoreductase 2Expand
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Murine and human autotaxin alpha, beta, and gamma isoforms: gene organization, tissue distribution, and biochemical characterization.
Autotaxin is a type II ectonucleotide pyrophosphate phosphodiesterase enzyme. It has been recently discovered that it also has a lysophospholipase D activity. This enzyme probably provides most ofExpand
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Molecular evidence that melatonin is enzymatically oxidized in a different manner than tryptophan: investigations with both indoleamine 2,3-dioxygenase and myeloperoxidase.
The catabolism of melatonin, whether naturally occurring or ingested, takes place via two pathways: approximately 70% can be accounted for by conjugation (sulpho- and glucurono-conjugation), andExpand
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