lysosomal storage diseases/glutathione

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Paj 1 soti nan 16 rezilta yo

Cumene hydroperoxide-mediated lipid peroxidation in rat alveolar macrophages following induction of phospholipidosis with chlorphentermine.

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Rats were treated for 4 weeks with chlorphentermine hydrochloride (30 mg/kg, i.p., 5 days/seek), a regimen which causes a profound phospholipidosis in the alveolar macrophages (AMs). The susceptibility of these lipid-laden cells to lipid peroxidation was examined and compared to AMs from control

A multiplexed UPLC-MS/MS assay for the simultaneous measurement of urinary safety biomarkers of drug-induced kidney injury and phospholipidosis.

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Drug-induced kidney injury (DIKI) is a major concern in drug risk assessment given its clinical importance and the absence of a sensitive/specific method of diagnosis. Pharmaceutical regulatory agencies have qualified and issued letters of support for new biomarkers to better evaluate DIKI in

Developmental impairments of select neurotransmitter systems in brains of Cln3(Deltaex7/8) knock-in mice, an animal model of juvenile neuronal ceroid lipofuscinosis.

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The neuronal ceroidlipofuscinoses (NCL) are a group of neurodegenerative disorders and are the most common lysosomal storage diseases of infancy and childhood. Juvenile NCL is caused by CLN3 mutation, producing retinal degeneration, uncontrollable seizures, cognitive and motor decline, and early

Analysis of Mucopolysaccharidosis Type VI through Integrative Functional Metabolomics.

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Metabolic phenotyping is poised as a powerful and promising tool for biomarker discovery in inherited metabolic diseases. However, few studies applied this approach to mcopolysaccharidoses (MPS). Thus, this innovative functional approach may unveil comprehensive impairments in MPS biology. This

[Lipid peroxidation and tubular disorder in experimental acute renal failure-enzymochemical study in the rat kidney].

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Acute renal failure induced by the administration of gentamicin (GM) was studied enzymochemically in comparison with that in rats with tubular disorder resulting from postischemic reperfusion. Renal ischemia was caused by clamping the renal artery for 30 minutes to create complete ischemia and

Effects of diphenyl-phenylenediamine on gentamicin-induced lipid peroxidation and toxicity in rat renal cortex.

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The hypothesis that lipid peroxidation is linked causally to the pathogenesis of aminoglycoside nephrotoxicity was tested by determining whether administration of the antioxidant, diphenyl-phenylenediamine (DPPD) would inhibit lipid peroxidation and ameliorate gentamicin-induced proximal tubular

Alterations in oxidative markers in the cerebellum and peripheral organs in MPS I mice.

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Mucopolysaccharidosis type I is a lysosomal storage disease with alterations in several organs. Little is known about the pathways that lead to the pathology. Evidences point oxidative stress on lysosomal storage diseases and mucopolysaccharidosis type I. The aim of the present study was to evaluate

Metabolite identification studies on amiodarone in in vitro (rat liver microsomes, rat and human liver S9 fractions) and in vivo (rat feces, urine, plasma) matrices by using liquid chromatography with high-resolution mass spectrometry and multiple-stage mass spectrometry: characterization of the diquinone metabolite supposedly responsible for the drug's hepatotoxicity.

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BACKGROUND Several mechanisms have been anticipated for the toxicity of amiodarone, such as oxidative stress, lipid peroxidation, phospholipidosis, free radical generation, etc. Amiodarone is structurally similar to benzbromarone, an uricosuric agent, which was withdrawn from European markets due to

High-throughput screening for analysis of in vitro toxicity.

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The influence of combinatorial chemistry and high-throughput screening (HTS) technologies in the pharmaceutical industry during the last 10 years has been enormous. However, the attrition rate of drugs in the clinic due to toxicity during this period still remained 40-50%. The need for reduced

Hepatotoxicity of piperazine designer drugs: up-regulation of key enzymes of cholesterol and lipid biosynthesis.

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The piperazine derivatives most frequently consumed for recreational purposes are 1-benzylpiperazine, 1-(3,4-methylenedioxybenzyl) piperazine, 1-(3-trifluoromethylphenyl) piperazine and 1-(4-methoxyphenyl) piperazine. Generally, they are consumed as capsules, tablets or pills but also in powder or

Human leukocyte acid hydrolases: characterization of eleven lysosomal enzymes and study of reaction conditions for their automated analysis.

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The optimal reaction conditions and kinetic properties of eleven leukocyte acid hydrolases determined with the use of fluorigenic derivatives of 4-methyl-umbelliferone are described. The enzymes studied were acid phosphatase, aryl sulfatase, alpha- and beta-glucosidase, alpha- and

Role of thiols in degradation of proteins by cathepsins.

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The effects of thiols on the breakdown of 125I-labelled insulin, albumin and formaldehyde-treated albumin by highly purified rat liver cathepsins B, D, H and L at pH 4.0 and 5.5 were studied. At both pH values degradation was strongly activated by the thiols cysteamine, cysteine, dithiothreitol,

Acute and chronic drug-induced hepatitis.

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Adverse drug reactions may mimic almost any kind of liver disease. Acute hepatitis is often due to the formation of reactive metabolites in the liver. Despite several protective mechanisms (epoxide hydrolases, conjugation with glutathione), this formation may lead to predictable toxic hepatitis

Oxidative and nitrative stress and pro-inflammatory cytokines in Mucopolysaccharidosis type II patients: effect of long-term enzyme replacement therapy and relation with glycosaminoglycan accumulation.

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Mucopolysaccharidosis type II (MPS II) is a lysosomal storage disease caused by a deficient activity of iduronate-2-sulfatase, leading to abnormal accumulation of glycosaminoglycans (GAG). The main treatment for MPS II is enzyme replacement therapy (ERT). Previous studies described potential

A metabolomics cell-based approach for anticipating and investigating drug-induced liver injury.

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In preclinical stages of drug development, anticipating potential adverse drug effects such as toxicity is an important issue for both saving resources and preventing public health risks. Current in vitro cytotoxicity tests are restricted by their predictive potential and their ability to provide

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