Results 81 to 90 of about 270,592 (355)

Multianalyte Approach—Including Automated Preparation of Calibrators—for Validated Quantification of 82 Drugs in Whole Blood by Liquid Chromatography–Tandem Mass Spectrometry

open access: yesDrug Testing and Analysis, EarlyView.
In forensic bioanalysis, often multianalyte approaches are used given their increased effectiveness but can be difficult to develop and maintain in the laboratory, for example, in terms of calibrator solution preparation. A fast, simple, and robust liquid chromatography–tandem mass spectrometry (LC–MS/MS) method for the quantification of 82 classic ...
Andrea E. Steuer   +3 more
wiley   +1 more source

Comparison between Acute and Long-Term Effects of Verapamil on Naloxane Induced Morphine Withdrawal in Mice

open access: yesJournal of Research in Medical Sciences, 2004
Background: There is growing evidence indicating that neuronal calcium channels play an important role in the mechanism of Morphine dependence. Objective: To investigate the acute and long-term effects of Verapamil in Morphine dependent mice.
M Rabbani, A Jafarian, M Sobhanian
doaj  

Deep Reinforcement Learning for Optimal Critical Care Pain Management with Morphine using Dueling Double-Deep Q Networks [PDF]

open access: yesarXiv, 2019
Opioids are the preferred medications for the treatment of pain in the intensive care unit. While undertreatment leads to unrelieved pain and poor clinical outcomes, excessive use of opioids puts patients at risk of experiencing multiple adverse effects.
arxiv  

Effect of intrauterine morphine sulfate exposure on cerebellar histomorphological changes in neonatal mice [PDF]

open access: yes, 2011
Neurotoxic effects of morphine sulfate in adult cerebellar cortex and neonatal cerebral cortex have been studied in animal models. This study was done to determine the neurotoxic effects of prenatal morphine exposure on the histo morphological changes of
Ghafari, S.   +2 more
core  

Rapid Analytical Method for Quantification of Gamma‐Hydroxybutyrate (GHB) in Hair by UPLC‐MS/MS

open access: yesDrug Testing and Analysis, EarlyView.
A rapid and simple UPLC‐MS/MS method for quantification of GHB in 10 mg of hair was developed. The method was satisfactorily validated, showing a linear range of 0.5–50 ng/mg, which allows us to quantify endogenous and exogenous GHB concentrations.
Miriam Blanco‐Ces   +5 more
wiley   +1 more source

A lipidated peptide derived from the C-terminal tail of the vasopressin 2 receptor shows promise as a new $β$-arrestin inhibitor [PDF]

open access: yesPharmacological Research, 2025, 107597
$\beta$-arrestins play pivotal roles in seven transmembrane receptor (7TMR) signalling and trafficking. To study their functional role in the regulation of specific receptor systems, current research relies mainly on genetic tools, as few pharmacological options are available.
arxiv   +1 more source

Ueber Morphin [PDF]

open access: yesBerichte der deutschen chemischen Gesellschaft, 1882
n ...
von Gerichten, E., Schrötter, Hugo
openaire   +2 more sources

Amniotic-Fluid Ingestion Enhances the Central\ud Analgesic Effect of Morphine [PDF]

open access: yes, 1991
Amniotic fluid and placenta contain a substance (POEF) that when ingested enhances opioid-mediated analgesia produced by several agents (morphine injection, vaginal/cervical stimulation, late pregnancy, footshock), but not that produced by aspirin ...
DiPirro, Jean M.   +2 more
core  

M3 muscarinic acetylcholine receptor facilitates the endocytosis of mu opioid receptor mediated by morphine independently of the formation of heteromeric complexes [PDF]

open access: yes, 2017
Morphine inefficiency to induce the internalization of mu opioid (MOP) receptors observed in numerous experimental models constitutes a paradigm of G-protein coupled receptor (GPCR) functional selectivity.
Alvarez-Curto, Elisa   +2 more
core   +1 more source

UHPLC‐QTOFMS Urine Drug Screening With Dilute‐and‐Shoot Sample Preparation and Vacuum‐Insulated Probe‐Heated Electrospray Ionization

open access: yesDrug Testing and Analysis, EarlyView.
The new ionization technique, vacuum‐insulated probe‐heated electrospray, allows for a simple dilute‐and‐shoot sample preparation to be used with liquid chromatography time‐of‐flight mass spectrometry in urine drug screening. Comparison with a method relying on solid‐phase extraction and conventional electrospray ionization shows improved performance ...
Mira Sundström   +4 more
wiley   +1 more source

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