Objective: To establish a method for the simultaneous determination of 6 benzodiazepine sedatives residue in aquatic products by high performance liquid chromatography-triple quadrupole mass spectrometry.
Methods: The samples were extracted with acetonitrile and purified by C_(18 )solid phase extraction column. The sample solution was separated by Waters ACQUITY UPLC BEH C_(18 )column(2.1 mm×50 mm, 1.7 μm) using 0.1% formic acid and methanol as mobile phase for gradient elution, determined in multiple reaction monitoring mode and quantified by internal standard method.
Results: Six benzodiazepine sedatives had a good linear relationship in the range of 1.0-50.0 μg/L with r>0.9990, the limits of detection and limits of quantification were 0.3 and 1.0 μg/kg. Average recoveries for the analytes at 3 spiked levels ranged from 74.2%-108.0% with relative standard deviations of 1.1%-6.7%(n=6).
Conclusion: The method is simple, rapid, sensitive and accurate, which is suitable for simultaneous determination of 6 benzodiazepine sedatives residue in aquatic products.
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http://dx.doi.org/10.19813/j.cnki.weishengyanjiu.2024.02.017 | DOI Listing |
PLoS Biol
January 2025
Department of Neuroscience, University of Minnesota, Minneapolis, Minnesota, United States of America.
Worrying about perceived threats is a hallmark of multiple psychological disorders including anxiety. This concern about future events is particularly important when an individual is faced with an approach-avoidance conflict. Potential goals to approach are known to be represented in the dorsal hippocampus during theta cycles.
View Article and Find Full Text PDFAnn Intensive Care
January 2025
Department of Intensive Care Unit, Yanbian University Hospital, No. 1327, Juzi Street, Xinxing Street, Yanji, 136200, Jilin, China.
Background: Invasive procedures and environmental factors in the intensive care unit (ICU) may cause anxiety and discomfort in patients, who often require sedation therapy. The aim of this study was to assess the safety of remimazolam tosilate for procedural sedation in ICU patients receiving mechanical ventilation following endotracheal intubation. Eighty patients from a single centre were randomly assigned to either the propofol group or the remimazolam group.
View Article and Find Full Text PDFClin Endosc
January 2025
Department of Internal Medicine, Samsung Medical Center, Sungkyunkwan University College of Medicine, Seoul, Korea.
Oral Maxillofac Surg
January 2025
Department of Oral and Maxillofacial Surgery, Nara Medical University, 840, Shijo-Cho, 634-8522, Kashihara, Nara, Japan.
Purpose: This study aimed to analyze changes in anxiety and comfort levels at each perioperative stage during third molar extraction under single-agent intravenous midazolam sedation, and to clarify how these conditions at each perioperative stage affect postoperative satisfaction.
Patients And Method: 115 who requested extraction of 1 ~ 4 third molars under single-agent intravenous midazolam sedation were targeted. These patients were administered a questionnaire survey one week after surgery.
Intensive Care Med
January 2025
Usher Institute, University of Edinburgh, Edinburgh, UK.
Purpose: Benzodiazepines and z-drugs are often prescribed to critical care survivors due to high prevalence of mental health problems and insomnia. However, their safety has not been studied in this population.
Methods: Retrospective cohort study of 28,678 adult critical care survivors hospitalised in 2010 and 2018: 4844 prescribed benzodiazepines or z-drugs, matched to 23,834 unexposed survivors using UK Clinical Practice Research Datalink linked datasets.
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