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Page 1 de 243 résultats
Poly(ADP-ribose) polymerase inhibition by cilostazol is implicated in the neuroprotective effect against focal cerebral ischemic infarct in rat.
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This study shows that cilostazol displayed a potent inhibition of PARP with IC(50) of 883+/-41 nM in the enzyme assay, and also significantly reversed H(2)O(2)-evoked elevated PARP activity and reduced NAD(+) levels in the PC12 cells with improvement of cell viability. In in vivo study, inhibition
Acute myocardial infarction induced increases in plasma tumor necrosis factor-alpha and interleukin-10 are associated with the activation of poly(ADP-ribose) polymerase of circulating mononuclear cell.
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Systemic inflammatory response to acute myocardial infarction (AMI) is detrimental to heart function. In this study, we proved that poly(ADP-ribose) polymerase (PARP) activity of circulating mononuclear cell (MNC) increased significantly in post-AMI patients. MNC PARP activity was correlated
Poly(ADP-ribose) polymerase contributes to the development of myocardial infarction in diabetic rats and regulates the nuclear translocation of apoptosis-inducing factor.
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Activation of the nuclear enzyme poly(ADP-ribose) polymerase (PARP)-1 by oxidant-mediated DNA damage is an important pathway of cell dysfunction and tissue injury during myocardial infarction. Because diabetes mellitus can substantially alter cellular signal transduction pathways, we have now
Effects of 3-aminobenzamide on expressions of poly (ADP ribose) polymerase and apoptosis inducing factor in cardiomyocytes of rats with acute myocardial infarction.
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BACKGROUND
Poly (ADP-ribose) polymerase (PARP) plays an important role in cell survival and death. However, the mechanisms involved are not fully understood. Therefore, we investigated the effect of inhibition of PARP on acute myocardial infarction (AMI) at different time points in rats.
METHODS
AMI
Ribose treatment reduced the infarct size and improved heart function after myocardial infarction in rats.
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OBJECTIVE
In this study the effect of ribose on heart function and infarct-size was analyzed 6 h after myocardial infarction (MI) in rats.
METHODS
Continuous i.v.-infusion of NaCl or ribose (200 mg/kg/h) was started one day prior to induction of MI in female Sprague-Dawley rats which was done by
5-aminoisoquinolinone, a potent inhibitor of poly (adenosine 5'-diphosphate ribose) polymerase, reduces myocardial infarct size.
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This study investigates the effects of a novel, water-soluble inhibitor of the activity of poly (adenosine 5'-diphosphate ribose) polymerase, 5-aminoisoquinolinone [5-aminoisoquinolin-1(2H)-one], on (i) poly (adenosine 5'-diphosphate ribose) polymerase activity in rat cardiac myoblasts and (ii) the
Suppression of poly (ADP-ribose) polymerase activation by 3-aminobenzamide in a rat model of myocardial infarction: long-term morphological and functional consequences.
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1. Recent studies demonstrated that inhibition or genetic inactivation of the enzyme poly (ADP-ribose) polymerase (PARP) is beneficial in myocardial reperfusion injury. PARP activation in the reperfused myocardium has been assumed, but not directly demonstrated. Furthermore, the issue whether
Early Treatment with Poly(ADP-Ribose) Polymerase-1 Inhibitor (JPI-289) Reduces Infarct Volume and Improves Long-Term Behavior in an Animal Model of Ischemic Stroke.
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In patients with stroke and neurodegenerative diseases, overactivation of poly(ADP-ribose) polymerase-1 (PARP-1) causes harmful effects by inducing apoptosis, necrosis, neuroinflammation, and immune dysregulation. The current study investigated the neuroprotective effect of a novel PARP-1 inhibitor,
Pretreatment of therapeutic cells with poly(ADP-ribose) polymerase inhibitor enhances their efficacy in an in vitro model of cell-based therapy in myocardial infarct.
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The potential of cell-based therapies in diseases involving ischemia-reperfusion is greatly hampered by the excessive loss of administered cells in the harsh and oxidative environment where these cells are supposed to act. Therefore, we investigated if inhibition of poly(ADP-ribose) polymerase
Activation of poly(ADP-ribose) polymerase in circulating leukocytes during myocardial infarction.
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Myocardial ischemia-reperfusion can lead to increased oxidative stress both locally and in circulating leukocytes. Oxidant-mediated DNA single strand breaks are known to activate the nuclear enzyme poly(ADP-ribose) polymerase (PARP) in various forms of shock, inflammation, and ischemia-reperfusion
Poly(ADP-ribose) polymerase activity in different pathologies--the link to inflammation and infarction.
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DNA repair and aging are two phenomena closely connected to each other. The poly(ADP-ribosyl)ation reaction has been implicated in both of them. Poly(ADP-ribose) was originally discovered as an enzymatic reaction product after DNA damage. Soon it became evident that it is necessary for regulation of
A randomized, placebo-controlled trial to evaluate the tolerability, safety, pharmacokinetics, and pharmacodynamics of a potent inhibitor of poly(ADP-ribose) polymerase (INO-1001) in patients with ST-elevation myocardial infarction undergoing primary percutaneous coronary intervention: results of the TIMI 37 trial.
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BACKGROUND
Reperfusion injury is a significant complication of the management of ST-elevation MI (STEMI). INO-1001 is a potent inhibitor of poly(ADP-ribose) polymerase (PARP), a mediator of oxidant-induced myocyte dysfunction during reperfusion.
RESULTS
We assessed the safety and pharmacokinetics of
Serum desoxy-ribose compounds in experimental myocardial infarction.
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Poly(ADP-ribose) activation in circulating cells in human myocardial infarction.
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Combined therapy with PJ34, a poly(ADP-ribose)polymerase inhibitor, reduces tissue plasminogen activator-induced hemorrhagic transformations in cerebral ischemia in mice.
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Recombinant tissue-type plasminogen activator (rt-PA) is presently the only pharmacological treatment approved for thrombolysis in patients suffering from ischemic stroke. Although reperfusion of ischemic tissue is essential, the use of rt-PA is limited due to its narrow therapeutic window and risk
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