gamma glutamyl cysteine/atrophy

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Glutathione depletion in rat brain does not cause nigrostriatal pathway degeneration.

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Nigral cell death in Parkinson's disease (PD) may involve oxidative stress and mitochondrial dysfunction initiated by a decrease in reduced glutathione (GSH) levels in substantia nigra. L-buthionine-(S,R)-sulphoximine (BSO; 4.8 and 9.6 mg/kg/day), an irreversible inhibitor of gamma-glutamyl cysteine

Inducible alterations of glutathione levels in adult dopaminergic midbrain neurons result in nigrostriatal degeneration.

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Parkinson's disease is a neurodegenerative disorder characterized by the preferential loss of midbrain dopaminergic neurons in the substantia nigra (SN). One of the earliest detectable biochemical alterations that occurs in the Parkinsonian brain is a marked reduction in SN levels of total

Chronic dietary supplementation with turmeric protects against 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine-mediated neurotoxicity in vivo: implications for Parkinson's disease.

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Multiple pathways including oxidative stress and mitochondrial damage are implicated in neurodegeneration during Parkinson's disease (PD). The current PD drugs provide only symptomatic relief and have limitations in terms of adverse effects and inability to prevent neurodegeneration. Therefore,

Alloxan cytotoxicity involves lysosomal damage.

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The cytotoxic effects of alloxan are not understood in any great detail, although they are considered to involve reactions mediated by oxygen-derived free radicals. These reactive species may form extra-or intracellularly following alloxan reduction, and result in cell damage through a number of

Selective glutathione depletion on function and structure of the isolated perfused rat kidney.

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The role of glutathione (GSH) in the preservation of renal function and the pathogenesis of renal injury has been investigated using the isolated perfused rat kidney as a model. In kidneys perfused for 80 min with 5 mM glucose as the only exogenous substrate, tissue GSH becomes depleted, renal

Sulforaphane reduces the alterations induced by quinolinic acid: modulation of glutathione levels.

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Glutamate-induced excitotoxicity involves a state of acute oxidative stress, which is a crucial event during neuronal degeneration and is part of the physiopathology of neurodegenerative diseases. In this work, we evaluated the ability of sulforaphane (SULF), a natural dietary isothiocyanate, to

Protein kinase Cδ knockout mice are protected from cocaine-induced hepatotoxicity.

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We investigated whether protein kinase Cδ (PKCδ) mediates cocaine-induced hepatotoxicity in mice. Cocaine treatment (60 mg/kg, i.p.) significantly increased cleaved PKCδ expression in the liver of wild-type (WT) mice, and led to significant increases in oxidative parameters (i.e., reactive oxygen

Mechanisms of coxsackievirus B5 mediated beta-cell death depend on the multiplicity of infection.

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Coxsackievirus infections may trigger and accelerate pancreatic beta-cell death, leading to type I diabetes. Unrestricted coxsackievirus B5 replication in cultured beta-cells inoculated with high multiplicity leads to rapid lytic cell death. Evidence from other virus-host cell systems indicates that

Role of Caenorhabditis elegans AKT-1/2 and SGK-1 in Manganese Toxicity.

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Excessive levels of the essential metal manganese (Mn) may cause a syndrome similar to Parkinson's disease. The model organism Caenorhabditis elegans mimics some of Mn effects in mammals, including dopaminergic neurodegeneration, oxidative stress, and increased levels of AKT. The evolutionarily

Glutathione depletion in PC12 results in selective inhibition of mitochondrial complex I activity. Implications for Parkinson's disease.

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Oxidative stress appears to play an important role in degeneration of dopaminergic neurons of the substantia nigra (SN) associated with Parkinson's disease (PD). The SN of early PD patients have dramatically decreased levels of the thiol tripeptide glutathione (GSH). GSH plays multiple roles in the

Oxidative damage in muscular dystrophy correlates with the severity of the pathology: role of glutathione metabolism.

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Muscular dystrophies (MDs) such as Duchenne muscular dystrophy (DMD), sarcoglycanopathy (Sgpy) and dysferlinopathy (Dysfy) are recessive genetic neuromuscular diseases that display muscle degeneration. Although these MDs have comparable endpoints of muscle pathology, the onset, severity and the

Gclc deficiency in mouse CNS causes mitochondrial damage and neurodegeneration.

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Gamma glutamyl cysteine ligase (GCL) is the rate-limiting enzyme for intracellular glutathione (GSH) synthesis. The GSH concentration and GCL activity are declining with age in the central nervous system (CNS), and is accompanied by elevated reactive oxygen species (ROS). To study the biological

Glutathione depletion and neuronal cell death: the role of reactive oxygen intermediates and mitochondrial function.

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Glutathione (GSH) levels are supposed to determine the vulnerability of many cells towards a wide array of insults. We investigated the effects of chronic inhibition of GSH synthesis and acute depletion of GSH on cerebellar granule neurons in vitro and determined cytoplasmic and mitochondrial GSH

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