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Metabolomics insights into doxorubicin and 5-fluorouracil combination therapy in triple-negative breast cancer: a xenograft mouse model study.
Front Mol Biosci
January 2025
Department of Medicinal Chemistry, College of Pharmacy, University of Sharjah, Sharjah, United Arab Emirates.
Background: Breast cancer is one of the most prevalent malignancies and a leading cause of death among women worldwide. Among its subtypes, triple-negative breast cancer (TNBC) poses significant clinical challenges due to its aggressive behavior and limited treatment options. This study aimed to investigate the effects of doxorubicin (DOX) and 5-fluorouracil (5-FU) as monotherapies and in combination using an established MDA-MB-231 xenograft model in female BALB/C nude mice employing advanced metabolomics analysis to identify molecular alterations induced by these treatments.
View Article and Find Full Text PDFMethod Development and Clinical Utility for Simultaneous Measurement of 21-Deoxycortisol, 17-Hydroxyprogesterone, Cortisol, and Cortisone Levels in Human Plasma Using UHPLC-MS/MS.
Adv Pharmacol Pharm Sci
January 2025
Research Administrative Operations, Research and Innovation, King Faisal Specialist Hospital & Research Center, P.O. Box 3354, MBC-03, Riyadh 11211, Saudi Arabia.
A simple and efficient validated assay for quantifying 21-deoxycortisol (21-DOC), 17-hydroxyprogesterone (17-OHP), cortisol, and cortisone in human plasma has been developed using ultra-high performance liquid chromatography coupled with tandem mass spectrometry (UHPLC-MS/MS). Analysis of plasma samples were performed on Atlantis dC18 (3 m) column using a mobile phase of 20.0 mM ammonium acetate and acetonitrile (50:50, : ) that was delivered at isocratic flow rate 0.
View Article and Find Full Text PDFMethod development and validation for the simultaneous determination of 21 antiviral drugs by ultra-high performance liquid chromatography-tandem mass spectrometry in chicken muscle and liver.
J Chromatogr A
January 2025
Wageningen Food Safety Research (WFSR), European Union Reference Laboratory for antivirals, growth promotors and sedatives, Part of Wageningen University & Research, Wageningen 6700 AE, the Netherlands. Electronic address:
The recent unauthorization of antiviral drugs in food-producing animals according to Commission Delegated Regulation (EU) 2022/1644 have increased the need for food control laboratories to develop analytical methods and perform official controls. In this work, a simple and fast analytical methodology was developed for the simultaneous determination of 21 antiviral drugs in chicken muscle and liver by liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS). Chromatographic separation was achieved by an HILIC BEH amide column; followed by detection with a electrospray ionization source in positive and negative modes.
View Article and Find Full Text PDFSimultaneous determination of busulfan, fludarabine, phenytoin, and posaconazole in plasma from patients undergoing hematopoietic stem cell transplantation.
J Pharm Biomed Anal
January 2025
Department of Pharmacy, Hebei Children's Hospital, Shijiazhuang, Hebei 050031, China. Electronic address:
A simple, fast, sample-saving, and sensitive liquid chromatography-tandem mass spectrometry method was established with a linear range adjusted by in-source collision-induced dissociation. Notably, this could simultaneously determine busulfan, fludarabine, phenytoin, and posaconazole in plasma from children, each having unique physical and chemical properties. The procedure necessitated only 20 μL of plasma and involved a simple protein precipitation process.
View Article and Find Full Text PDFMultidimensional library for the improved identification of per- and polyfluoroalkyl substances (PFAS).
Sci Data
January 2025
Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
As the occurrence of human diseases and conditions increase, questions continue to arise about their linkages to chemical exposure, especially for per-and polyfluoroalkyl substances (PFAS). Currently, many chemicals of concern have limited experimental information available for their use in analytical assessments. Here, we aim to increase this knowledge by providing the scientific community with multidimensional characteristics for 175 PFAS and their resulting 281 ion types.
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