A liquid chromatography/electrospray tandem mass spectrometry (LC/ESI-MS/MS) method for the determination in urine samples of two ethanol metabolites, ethyl glucuronide (EtG) and ethyl sulfate (EtS), was developed and validated. Pentadeuterated EtG was used as internal standard for both EtG and EtS. In addition to the surviving ions, two MS/MS reactions were monitored for each analyte, with the deprotonated molecule as precursor ion: m/z 221 --> 75, m/z 221 --> 85 (EtG), and m/z 125 --> 97, m/z 125 --> 80 (EtS). Sample pretreatment, though very simple and rapid (1:50 water dilution and centrifugation of 50 muL of urine), was found to contain the occurrence of matrix effects. The method was accurate and precise over the linear dynamic range (0.05-10 mg/L). The analytes were stable in frozen urine for at least 1 month. The assay was applied to several authentic urine samples from social drinkers and to alcoholic beverages.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/rcm.1932 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Alcohol promotes CPT1A-induced lipid metabolism disorder to sentinel-regulate acute pancreatitis.
Eur J Med Res
January 2025
Medical Imaging Key Laboratory of Sichuan Province, Department of Radiology, Affiliated Hospital of North Sichuan Medical College, 1# South Maoyuan Street, Nanchong, 637001, Sichuan, China.
Background And Aims: Previous studies have confirmed that alcohol can increase the sensitivity of the pancreas to stressors and exacerbate the severity of pancreatitis when excessive alcohol intake is combined with other causes. In the current work, this study attempted to explore how does alcohol regulate cerulein-induced acute pancreatitis, especially before inflammation occurs.
Methods: Proteomics was performed to analyze the differentially expressed proteins in pancreatic tissues from a rat model of pancreatitis.
Prostate cancer cells elevate glycolysis and G6PD in response to caffeic acid phenethyl ester-induced growth inhibition.
BMC Cancer
January 2025
Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli County, 35053, Taiwan.
Background: Caffeic acid phenethyl ester (CAPE) is the main bioactive component of poplar type propolis. We previously reported that treatment with caffeic acid phenethyl ester (CAPE) suppressed the cell proliferation, tumor growth, as well as migration and invasion of prostate cancer (PCa) cells via inhibition of signaling pathways of AKT, c-Myc, Wnt and EGFR. We also demonstrated that combined treatment of CAPE and docetaxel altered the genes involved in glycolysis and tricarboxylic acid (TCA) cycle.
View Article and Find Full Text PDFThe ethanol extract of as an ovicidal agent against .
Narra J
December 2024
Department of Tropical Biology, Faculty of Biology, Universitas Gadjah Mada, Yogyakarta, Indonesia.
Dengue hemorrhagic fever (DHF) is a major health concern in tropical and subtropical countries. Indonesia has DHF cases perennially every year. On the other hand, Indonesia is abundant with seaweed ), which can be found across its seashore.
View Article and Find Full Text PDFAntioxidant and immunomodulatory activities of ethanol extracts from L. Skeels and Benth.
Narra J
December 2024
Department of Pharmacology-Clinical Pharmacy, School of Pharmacy, Institut Teknologi Bandung, Bandung, Indonesia.
and are mostly cultivated in tropical climates for culinary and perfumery purposes, yet their potential medicinal properties remain underreported. The aim of this study was to examine the antioxidant and immunomodulatory activities of ethanol extracts from (EESC) and (EEPC). Reflux extraction was carried out using 96% ethanol on the collected plant specimens to produce EESC and EEPC.
View Article and Find Full Text PDFInsecticidal effects of Sargassum vulgare and Caulerpa racemosa extracts on Aedes aegypti.
Parasitol Int
January 2025
Department of Fundamental Chemistry, Center for Natural Sciences, Federal University of Pernambuco, Av. Jorn. Aníbal Fernandes, s/n - Cidade Universitária, 50740-560 Recife, Pernambuco, Brazil. Electronic address:
Dengue is a viral disease present in many regions of the world. Aedes aegypti transmits it, and the most effective way to eliminate the mosquito is during the larval stage. Seaweeds possess metabolites with insecticidal properties, making them potential sources of new larvicides and viable alternatives to synthetic products used to control insect vectors of diseases.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!