High-resolution MS (HRMS) has seen an uptake in use for discovery qual/quan workflows, however, its utilization in late discovery/development has been slow. Past reports comparing HRMS to triple quadrupole (QQQ) instrumentation to date have indicated that HRMS instruments are capable of producing data acceptable for regulated bioanalysis, however lack the sensitivity required for sub ng/ml LLOQ assays. Recent advances in HRMS instrumentation have closed the sensitivity gap with QQQ and have even provided improved selectivity and sensitivity over QQQ SRM assays. Herein, the authors will describe how, when, and why HRMS (specifically Q-Exactive series mass spectrometers) should be considered for implementation in regulated quantitative bioanalysis assays.
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http://dx.doi.org/10.4155/bio-2016-0079 | DOI Listing |
Comb Chem High Throughput Screen
January 2025
Jining NO.1 People's Hospital, Jining, Shandong 272011, China.
Objective: The objective of this study is to analyze and identify the main chemical components and blood-absorbed components of Xuantu Granules and predict their pharmacological substance basis and mechanism in the treatment of DKD.
Methods: A DKD rat model was established by feeding SD rats a high-fat and high-sugar diet and administering intraperitoneal injections of streptozotocin (STZ). The therapeutic effect of Xuantu granules was evaluated.
Antioxidants (Basel)
November 2024
Department of Pharmacy, University of Naples Federico II, Via Domenico Montesano, 49, 80131 Naples, Italy.
Although edible flowers have been historically principally used due to their visual appeal and smell, the world is discovering their value as innovative and natural sources of bioactive compounds. L. (CpL), a plant from the Cucurbitaceae family, is widely cultivated for its edible fruits and flowers, which are rich in polyphenols and carotenoids-compounds known for their potent antioxidant and anti-inflammatory properties.
View Article and Find Full Text PDFJ Ethnopharmacol
January 2025
Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, 221004, China; Department of Pharmacy, Suining People's Hospital Affiliated to Xuzhou Medical University, Suining, 221202, China; Department of Pharmaceutical Analysis, Xuzhou Medical University, Xuzhou, 221204, China. Electronic address:
Ethnopharmacological Relevance: Mulberry (Morus alba L.) leaf is a well-known herbal medicine in China for thousands of years. Mulberry leaf can regulate arachidonic acid (ARA) metabolism disorder in obesity and type 2 diabetes mellitus.
View Article and Find Full Text PDFToxins (Basel)
November 2024
Istituto Zooprofilattico del Mezzogiorno, Via Salute 2, Portici, 80055 Naples, Italy.
A new method for simultaneous determination by liquid chromatography coupled with high resolution mass spectrometry (UHPLC-HRMS/MS) of 14 paralytic shellfish poisoning toxins (PSP), that is, Saxitoxin, Neosaxitoxin, Gonyautoxins and their respective variants, in bivalve molluscs, is herein described. The samples were extracted by acetic acid solution, then analysed by UHPLC coupled with a Q-Exactive Orbitrap Plus high resolution mass spectrometer, by electrospray ionization mode (ESI) with no further clean up step. The analysis was carried out by monitoring both the exact mass of the molecular precursor ion of each compound (in mass scan mode, resolution at 70,000 FWHM) and its respective fragmentation patterns (two product ions) with mass accuracy greater than 5 ppm.
View Article and Find Full Text PDFFront Pharmacol
November 2024
Department of Cardiovascular, Second Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China.
This study focused on examining the protection of QiShenYiQi dripping pills (QSYQ) against myocardial infarction (MI) and investigating its potential mechanisms. Ultra high performance liquid chromatography-q exactive-orbitrap high resolution mass spectrometry (UHPLC-Q-Orbitrap HRMS) was employed to analyze potential active compounds of QSYQ. The targets of these compounds were predicted using an integrated method and cross-referenced with relevant databases to identify associated pathways.
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