formic acid/stroke

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Immunohistochemical study of cerebral amyloid angiopathy. II. Enhancement of immunostaining using formic acid pretreatment of tissue sections.

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Cerebral amyloid angiopathy (CAA) is a biochemically heterogeneous entity most commonly associated with stroke syndromes, Alzheimer's disease (AD), Down's syndrome, and miscellaneous neurologic conditions. The authors have applied and extended (using formic acid pretreatment of histologic sections)

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

Comparative pharmacokinetics of three marker compounds in mBHT and single-herb extract after oral administration to rats.

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Modified Bo-Yang-Hwan-O-Tang (mBHT) is a decoction of 12 herbs traditionally used in the treatment of cerebral and cardiac stroke and vascular dementia. Paeoniflorin (PF), calycosin-7-O-β-D-glycoside (CY), and salvianolic acid B (SB) are marker compounds for extracts of the herbs Paeoniae Radix,

[UPLC-MS/MS determination of content of three iridoids of xingnaojing oral preparation in rat brains and study on their brain pharmacokinetics].

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To establish a UPLC-MS/MS method for the simultaneous determination of geniposide, genipin 1-O-beta-D-gentiobioside and geniposidic acid in rat brains and study the brain pharmacokinetics of the three iridoid glycosides in stroke rat after the oral administration of Xingnaojing. In this experiment,

Development, validation and application of a new HPLC-DAD method for simultaneous quantification of apixaban, dabigatran, edoxaban and rivaroxaban in human plasma.

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Direct oral anticoagulants (DOACs) have been commonly used for the treatment of venous thromboembolism and for the prevention of stroke in patients with atrial fibrillation. Despite not being initially recommended, monitoring DOACs plasma concentrations is now recognized as essential in emergency

[Simultaneous analysis of six effective components in the anti-Alzheimer's disease effective component group of Xiao-Xu-Ming Decoction].

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A method based on high performance liquid chromatography (HPLC) was developed for the quantitative determination of six components in an anti-Alzheimer medicine, Xiao-Xu-Ming Decoction, which is an effective prescription in treating stroke and the sequela of stroke by herbalist doctors for thousands

Simultaneous determination of the bilirubin oxidation end products Z-BOX A and Z-BOX B in human serum using liquid chromatography coupled to tandem mass spectrometry.

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Bilirubin oxidation end products (BOXes) appear upon endogenous heme degradation and can be found in the cerebrospinal fluid after hemorrhagic stroke. BOXes are assumed to contribute to delayed cerebral vasospasm and secondary loss of brain tissue. Here, we present a validated LC-ESI-MS/MS method

Using 3D-UPLC-DAD and a new method-verification by adding mixture standard compounds to determine the fingerprint and eight active components of Naoluoxintong decoction.

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Naoluoxintong decoction (NLXTD) is a traditional Chinese formula which has been used for the management of ischemic stroke in China for two hundred years. In this study, we developed a comprehensive and reliable analytical method to qualitatively analyze the components in NLXTD. This novel method

Automated pencil electrode formation platform to realize uniform and reproducible graphite electrodes on paper for microfluidic fuel cells

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Graphite pencil stroked electrodes for paper-based Microfluidic devices are gaining immense attention due to their electrochemical properties, cost efficiency, and ease-of-use. However, their widespread use has been hindered by the challenges associated with their manual fabrication such as

The length of amyloid-beta in hereditary cerebral hemorrhage with amyloidosis, Dutch type. Implications for the role of amyloid-beta 1-42 in Alzheimer's disease.

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In hereditary cerebral hemorrhage with amyloidosis, Dutch type (HCHWA-D), a genetic variant (E22Q) of amyloid beta (Abeta) accumulates predominantly in the small vessels of leptomeninges and cerebral cortex, leading to fatal strokes in the fifth or sixth decade of life. Abeta deposition in the

Quantification of apixaban in human plasma using ultra performance liquid chromatography coupled with tandem mass spectrometry.

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Apixaban, an inhibitor of direct factor Xa, is used for the treatment of venous thromboembolic events or prevention of stroke. Unlike many other anticoagulant agents, it does not need periodic monitoring. However, monitoring is still required to determine the risk of bleeding due to overdose or

Identification of multiple ingredients for a Traditional Chinese Medicine preparation (bu-yang-huan-wu-tang) by liquid chromatography coupled with tandem mass spectrometry.

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Bu-yang-huan-wu-tang (BYHWT) is a popular Traditional Chinese Medicine formula consisting of seven herbal medicines (Astragalus membranaceus, Angelica sinensis, Paeonia lactiflora, Ligusticum chuanxiong, Carthamus tinctorius, Amygdalus persica and Pheretima aspergillum), that has been used in China

Determination of opiates in whole blood using microextraction by packed sorbent and gas chromatography-tandem mass spectrometry.

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In Portugal, and worldwide, the abuse of psychoactive substances is increasing, with a significant incidence of deaths related to their consumption. Opiates are one of the most prevalent group of substances in that context, and they are responsible for a significant impact of the mentioned harms.

Extremely slow formate elimination in severe methanol poisoning: a fatal case report.

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Methanol poisoning is a potentially fatal medical emergency because of its metabolism to formic acid. The half-life of formate has been reported in the range of 2.5-12.5 hours, but the degree of inter-individual variation is not known. We studied methanol and formate kinetics in a case of late

A validated UPLC-MS/MS method for the quantitation of an unstable peptide, monocyte locomotion inhibitory factor (MLIF) in human plasma and its application to a pharmacokinetic study.

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Monocyte locomotion inhibitory factor (MLIF, Met-Gln-Cys-Asn-Ser), a pentapeptide with anti-inflammatory activity, was developed for neural protection in acute ischemic stroke. Determination of MLIF in human plasma samples is of great importance for pharmacokinetic evaluation in clinical studies. A

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