formic acid/hypoxie

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Extracellular volatilomic alterations induced by hypoxia in breast cancer cells.

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The metabolic shift induced by hypoxia in cancer cells has not been explored at volatilomic level so far. The volatile organic metabolites (VOMs) constitute an important part of the metabolome and their investigation could provide us crucial aspects of hypoxia driven metabolic

Formic acid: a rare but deadly source of carbon monoxide poisoning.

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BACKGROUND Formic acid decomposes upon contact with strong acids producing carbon monoxide. Carbon monoxide poisoning from such a source, however, is extremely rare. METHODS A 26-year-old man committed suicide by mixing 2.5 L of formic acid and 2.5 L of sulfuric acid in three beakers and staying in

Methanol and formic acid toxicity: biochemical mechanisms.

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Metabolism of methanol, methyl ethers, esters and amides give rise to formic acid. This acid is an inhibitor of the mitochondrial cytochrome oxidase causing histotoxic hypoxia. Formic acid is a weaker inhibitor than cyanide and hydrosulphide anions. The body burden of formate in methanol poisoning

Rapid and sensitive ultra-high-pressure liquid chromatography-tandem mass spectrometry analysis of the novel anticancer agent PR-104 and its major metabolites in human plasma: Application to a pharmacokinetic study.

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PR-104 is a dinitrobenzamide mustard currently in clinical trial as a hypoxia-activated prodrug. It is converted systemically to the corresponding alcohol, PR-104A, which is activated by nitroreduction to the hydroxylamine (PR-104H) and amine (PR-104M). PR-104A is also metabolised to the

[Advancement of methanol poisoning mechanism research].

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The methanol poisoning by oral intake or skin contact occurs occasionally, which may have serious consequences including blindness and/or death. Methanol and its metabolites, formaldehyde and formic acid, are associated with metabolic acidosis, visual dysfunction and neurological symptoms. At

Development, Validation of LC-MS/MS Method and Determination of Pharmacokinetic Parameters of the Stroke Neuroprotectant Neurounina-1 in Beagle Dog Plasma After Intravenous Administration.

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Neurounina-1 [chemical name: 7-nitro-5-phenyl-1-(pyrrolidin-1-ylmethyl)-1H-benzo[e][1,4]diazepin-2(3H)-one] is a new compound provided with relevant neuroprotective effect during stroke and in neonatal hypoxia by increasing the Na⁺/Ca²⁺ exchanger (NCX) isoforms NCX1 and NCX2

Development and Validation of Analytical Method for SH-1242 in the Rat and Mouse Plasma by Liquid Chromatography/Tandem Mass Spectrometry.

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SH-1242, a novel inhibitor of heat shock protein 90 (HSP90), is a synthetic analog of deguelin: It was previously reported that the treatment of SH-1242 led to a strong suppression of hypoxia-mediated retinal neovascularization and vascular leakage in diabetic retinas by inhibiting the

[Acute methanol intoxication: physiopathology, prognosis and treatment].

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Acute methanol poisoning is mainly the consequence of voluntary or accidental ingestion. The mortality and morbidity rates remain very high despite intensive care therapy. Methanol by itself is poorly toxic. Methanol is transformed in the liver into formaldehyde and thereafter formic acid. Metabolic

Pharmacokinetics, tissue distribution and excretion of 6-O-demethylmenisporphine, a bioactive oxoisoaporphine alkaloid from Menispermi Rhizoma, as determined by a HPLC-MS/MS method

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6-O-demethylmenisporphine, a major active oxoisoaporphine alkaloid isolated from Menispermi Rhizoma, has been confirmed to possess significant bioactivities, including anti-cancer and anti-hypoxia effects. However, few researches on quantifying 6-O-demethylmenisporphine in biosamples have been

UPLC-MS-Based Procedures to Detect Prolyl-hydroxylase Inhibitors of HIF in Urine

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This article presents newly developed screening and confirmation analytical procedures to detect the misuse of nine prolyl-hydroxylase inhibitors of the hypoxia-inducible factor: daprodustat, desidustat, FG2216, IOX2, IOX4, JNJ-42041935, molidustat, roxadustat and vadadustat, targeting either the

Simultaneous Quantification of Diazepam and Dexamethasone in Plasma by High-Performance Liquid Chromatography with Tandem Mass Spectrometry and Its Application to a Pharmacokinetic Comparison between Normoxic and Hypoxic Rats.

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In order to investigate the pharmacokinetics of a combination of diazepam and dexamethasone under hypoxic conditions, a novel, sensitive and specific liquid chromatography with tandem mass spectrometry (LC-MS/MS) method for the simultaneous determination of diazepam and dexamethasone in rat plasma

Approach to the Treatment of Methanol Intoxication.

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Methanol intoxication is an uncommon but serious poisoning. Its adverse effects are due primarily to the impact of its major metabolite formic acid and lactic acid resulting from cellular hypoxia. Symptoms including abdominal pain and loss of vision can appear a few hours to a few days after

Carbon monoxide poisoning and pulmonary injury from the mixture of formic and sulfuric acids.

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BACKGROUND The inhalation of carbon monoxide produced by the incomplete combustion of carbon remains a popular method of suicide. A much less common method of producing carbon monoxide for suicide is by mixing formic and sulfuric acids. METHODS We describe a patient who attempted suicide by mixing

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