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l citrulline/infarci

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Involvement of inducible nitric oxide synthase in the inflammatory process of myocardial infarction.

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Inducible nitric oxide synthase (iNOS), which catalyzes the reaction of L-arginine to L-citrulline and nitric oxide (NO), plays an important role in immune-mediated cardiac disorders. The present report summarizes and discusses findings on the induction of NOS in myocardial infarction of rabbits.
BACKGROUND Diabetic heart disease is associated with tetrahydrobiopterin oxidation and high arginase activity, leading to endothelial nitric oxide synthase dysfunction. Sepiapterin (SEP) is a tetrahydrobiopterin precursor, and L-citrulline (L-Cit) is converted to endothelial nitric oxide synthase

Lateralization of hippocampal nitric oxide mediator system in people with Alzheimer disease, multi-infarct dementia and schizophrenia.

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There is evidence that brain lateralization underlying hemispheric specialization can be observed also at biochemical level. However, hemispheric differences in nitric oxide mediator system have not yet been evaluated. The hippocampus and planum temporale are highly asymmetrical regions but the

Attenuation of myocardial ischemia-reperfusion injury with nitric oxide replacement therapy.

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The coronary vascular endothelium produces nitric oxide (NO) during the conversion of L-arginine to L-citrulline. Although NO is a potent vasodilator, at lower concentrations, it also has antineutrophil actions that reduce the inflammatorylike components of ischemia-reperfusion injury. The

Functional characterization of Glu298Asp mutant human endothelial nitric oxide synthase purified from a yeast expression system.

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The Glu298Asp polymorphism of human endothelial nitric oxide synthase (eNOS) has been reported to be associated with several cardiovascular diseases, including hypertension and myocardial infarction. Therefore, we investigated the effect of the Glu298Asp (E298D) mutation on the function of purified

Bifunctional role of protein tyrosine kinases in late preconditioning against myocardial stunning in conscious rabbits.

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Although protein tyrosine kinases (PTKs) have been implicated in late preconditioning (PC) against infarction, their role in late PC against stunning is unknown. Furthermore, it is unknown whether PTK signaling is necessary only to trigger late PC on day 1 or also to mediate it on day 2. Thus,

Neuroprotective FK506 does not alter in vivo nitric oxide production during ischemia and early reperfusion in rats.

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OBJECTIVE Previous studies have demonstrated that the immunosuppressant FK506 provides neuroprotection in experimental brain injury and suggest that this action may be mediated by suppression of neuronal nitric oxide synthase activation that occurs after ischemic depolarization. We sought to

The role of polyamines in protein-dependent hypoxic tolerance of Drosophila.

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BACKGROUND Chronic hypoxia is a major component of ischemic diseases such as stroke or myocardial infarction. Drosophila is more tolerant to hypoxia than most mammalian species. It is considered as a useful model organism to identify new mechanisms of hypoxic tolerance. The hypoxic tolerance of
L-Arginine/NO pathway is altered in Alzheimer disease (AD). Its clinical relevance and pathway status in vascular dementia (VaD) are unknown. Using targeted metabolomics (a liquid chromatography-mass spectrometry) we assessed L-arginine, L-citrulline, dimethylamine (DMA), asymmetric dimethyl

Nitric oxide and nitric oxide synthase isoforms in the normal, hypertrophic, and failing heart.

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Nitric oxide (NO) produced in the heart by nitric oxide synthase (NOS) is a highly reactive signaling molecule and an important modulator of myocardial function. NOS catalyzes the conversion of L: -arginine to L: -citrulline and NO but under particular circumstances reactive oxygen species (ROS) can

The late phase of ischemic preconditioning is abrogated by targeted disruption of the inducible NO synthase gene.

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The goal of this study was to interrogate the role of inducible NO synthase (iNOS) in the late phase of ischemic preconditioning (PC) in vivo. A total of 321 mice were used. Wild-type mice preconditioned 24 h earlier with six cycles of 4-min coronary occlusion/4-min reperfusion exhibited a

Citrulline: pharmacological perspectives and its role as an emerging biomarker in future.

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L-Citrulline is a naturally occurring non-essential amino acid, an intermediate in urea cycle and conditionally essential in intestinal pathology. It is a potent hydroxyl radical scavenger and much more effective precursor of arginine and nitric oxide (NO) than arginine itself so exploited in
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