piperidine/infarction

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Acute myocardial infarction inhibits the neurogenic tachycardic and vasopressor response in rats via presynaptic cannabinoid type 1 receptor.

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The present study was carried out to examine whether acute experimental myocardial infarction affects the sympathetic transmission to vessels and the heart of pithed rats via a presynaptic mechanism and, if so, to check whether inhibitory presynaptic cannabinoid (CB) receptors and endocannabinoids

Cardiac electrophysiologic and antiarrhythmic actions of two long-acting spirobenzopyran piperidine class III agents, L-702,958 and L-706,000 [MK-499].

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The cardiac electrophysiologic and antiarrhythmic actions of two Class III ketone- and alcohol-containing spirobenzopyran piperidine analogs, L-702,958 and L-706,000 [MK-499], respectively, were assessed in vitro and in vivo. L-702,958 and L-706,000 [MK-499] selectively blocked the rapidly

Enhanced generation of reactive oxygen species in the limb skeletal muscles from a murine infarct model of heart failure.

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BACKGROUND The generation of reactive oxygen species (ROS) is enhanced in the failing myocardium. We hypothesized that ROS were also increased in the limb skeletal muscles in heart failure. Methods and Results-- Myocardial infarction (MI) was created in mice by ligating the left coronary artery.

PPBP [4-phenyl-1-(4-phenylbutyl) piperidine] decreases brain injury after transient focal ischemia in rats.

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OBJECTIVE We tested the hypothesis that intravenous administration of the potent sigma-receptor ligand 4-phenyl-1-(4-phenylbutyl) piperidine (PPBP) during transient focal ischemia would decrease postischemic brain infarction volume in rats. METHODS Rats underwent intravascular focal ischemia for 2

Neuroprotection from focal ischemia by 4-phenyl-1-(4-phenylbutyl) piperidine (PPBP) is dependent on treatment duration in rats.

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The IV administration of the potent sigma1-receptor ligand 4-phenyl-1-(4-phenylbutyl)piperidine (PPBP) provides neuroprotection against focal cerebral ischemia. We tested the hypothesis that prolonged, continuous administration of PPBP would provide further neuroprotection in a rat model of

Potent sigma 1-receptor ligand 4-phenyl-1-(4-phenylbutyl) piperidine provides ischemic neuroprotection without altering dopamine accumulation in vivo in rats.

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The in vivo signaling of ischemic neuroprotection provided by sigma-receptor ligands remains unclear. Catecholamines have been implicated in the propagation of ischemic neuronal injury, and previous in vitro studies suggest that sigma ligands modulate dopaminergic neurotransmission. In this study,

Suppression of lethal ischemic ventricular arrhythmias by the class III agent E4031 in a canine model of previous myocardial infarction.

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The antiarrhythmic efficacy of a new and potent class III agent E4031 [1-[2-(6-methyl-2-pyridyl)-ethyl]-4-(4- methylsulfonylaminobenzoyl)piperidine] was evaluated in several canine models of recent myocardial infarction. In anesthetized dogs with baseline inducible ventricular arrhythmias studied

Neuroprotective effect of sigma(1)-receptor ligand 4-phenyl-1-(4-phenylbutyl) piperidine (PPBP) is linked to reduced neuronal nitric oxide production.

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OBJECTIVE The potent final sigma(1)-receptor ligand 4-phenyl-1-(4-phenylbutyl) piperidine (PPBP) provides neuroprotection in experimental stroke. We tested the hypothesis that PPBP attenuates striatal tissue damage after middle cerebral artery occlusion (MCAO) by a mechanism involving reduction of

sigma(1)-receptor ligand 4-phenyl-1-(4-phenylbutyl)-piperidine affords neuroprotection from focal ischemia with prolonged reperfusion.

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OBJECTIVE We previously showed that the intravenous administration of the potent final sigma(1)-receptor ligand 4-phenyl-1-(4-phenylbutyl)-piperidine (PPBP) provides neuroprotection against transient focal cerebral ischemia and that the protection depends on treatment duration. We tested the

Identification of a potent sodium hydrogen exchanger isoform 1 (NHE1) inhibitor with a suitable profile for chronic dosing and demonstrated cardioprotective effects in a preclinical model of myocardial infarction in the rat.

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Sodium-hydrogen exchanger isoform 1 (NHE1) is a ubiquitously expressed transmembrane ion channel responsible for intracellular pH regulation. During myocardial ischemia, low pH activates NHE1 and causes increased intracellular calcium levels and aberrant cellular processes, leading to myocardial

Design and synthesis of nitrate esters of aromatic heterocyclic compounds as pharmacological preconditioning agents.

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Ischemic preconditioning (IPC) constitutes an endogenous protective mechanism in which one or more brief periods of myocardial ischemia and reperfusion render the myocardium resistant to a subsequent more-sustained ischemic insult. Pharmacological preconditioning represents an ideal alternative of

(2-Methyl-5-(methylsulfonyl)benzoyl)guanidine Na+/H+ antiporter inhibitors.

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The inhibition of the Na+/H+ exchanger during cardiac ischemia and reperfusion has been shown to be beneficial for the preservation of the cellular integrity and functional performance. The aim of the present investigation was to come up with potent and selective benzoylguanidines as NHE inhibitors

Synthesis, conformational analysis, and antiarrhythmic properties of 7-benzyl-3-thia-7-azabicyclo[3.3.1]nonan-9-one, 7-benzyl-3-thia-7-azabicyclo[3.3.1]nonane hydroperchlorate, and 7-benzyl-9-phenyl-3-thia-7-azabicyclo[3.3.1]nonan-9-ol hydroperchlorate and derivatives: single-crystal X-ray diffraction analysis and evidence for chair-chair and chair-boat conformers in the solid state.

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The synthesis of the title ketone has been completed via a type of Mannich reaction starting from 4- thianone . An X-ray diffraction analysis has revealed that the solid system is a chair-boat conformer with the sulfur atom in the boat portion of the bicyclic ring compound. Wolff- Kishner reduction

Synthesis, Molecular Modeling of Novel Substituted Pyridazinones and Their Vasorelaxant activities.

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Hypertension, one of the most common cardiovascular diseases that can cause coronary disease, stroke, myocardial infarction and sudden death, it is the major contributor to cardiac failure as well as renal insufficiency.As there are many cardio-active

Glutamate receptor antagonists inhibit calpain-mediated cytoskeletal proteolysis in focal cerebral ischemia.

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Excitatory amino acids may promote microtubular proteolysis observed in ischemic neuronal degeneration by calcium-mediated activation of calpain, a neutral protease. We tested this hypothesis in an animal model of focal cerebral ischemia without reperfusion. Spontaneously hypertensive rats were

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