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Development of an LC –MS/MS method for the determination of five psychoactive drugs in postmortem urine by optimization of enzymatic hydrolysis of glucuronide conjugates
ConclusionsWe have established an LC –MS/MS method for five psychoactive drugs in urine after enzymatic hydrolysis of glucuronide conjugates directly on extraction columns. The method was successfully applied to forensic autopsy samples. The established method will have broad applications, including forensic and clinical toxicologica l investigations. (Source: Forensic Toxicology)
Source: Forensic Toxicology - April 1, 2024 Category: Forensic Medicine Source Type: research

Sustainable beeswax modified cellulose paper for the determination of tricyclic antidepressants in biofluids
This article describes the synthesis of sorptive phases for bioanalysis based on the modification of cellulose paper with natural beeswax as sorbent, resulting in a substrate completely renewable and sustainable. The preparation of the sorptive phases consisted of the dissolution of beeswax in hexane, followed by its drop-casting on cellulose paper and subsequent evaporation of the solvent. The beeswax modification of paper renders it hydrophobic, enabling the extraction of the target analytes, i.e., imipramine, desipramine, amitriptyline and trimipramine, via hydrophobic interactions. The main variables affecting the extr...
Source: Talanta - March 13, 2024 Category: Chemistry Authors: Marisol Gonz ález-Bermúdez Ángela I López-Lorente Rafael Lucena Soledad C árdenas Source Type: research

Elucidation of escitalopram oxalate and related antidepressants as putative inhibitors of PTP4A3/PRL-3 protein in hepatocellular carcinoma: A multi-computational investigation
Comput Biol Chem. 2024 Feb 29;110:108039. doi: 10.1016/j.compbiolchem.2024.108039. Online ahead of print.ABSTRACTHepatocellular carcinoma (HCC) persists to be one of the most devastating and deadliest malignancies globally. Recent research into the molecular signaling networks entailed in many malignancies has given some prominent insights that can be leveraged to create molecular therapeutics for combating HCC. Therefore, in the current communication, an in-silico drug repurposing approach has been employed to target the function of PTP4A3/PRL-3 protein in HCC using antidepressants: Fluoxetine hydrochloride, Citalopram, A...
Source: Computational Biology and Chemistry - March 12, 2024 Category: Bioinformatics Authors: Ishfaq Hassan Mir Kankipati Teja Shyam Susmida Seni Balakrishnan Muthuvel Suresh Kumar Thiyagarajan Ramesh Chinnasamy Thirunavukkarasu Source Type: research

Structure- and Cation-Dependent Mechanism of Interaction of Tricyclic Antidepressants with NMDA Receptor According to Molecular Modeling Data
AbstractSome tricyclic antidepressants (TCAs), including amitriptyline (ATL), clomipramine (CLO), and desipramine (DES), are known to be effective for management of neuropathic pain. It was previously determined that ATL, CLO, and DES are capable of voltage-dependent blocking of NMDA receptors of glutamate (NMDAR), which play a key role in pathogenesis of neuropathic pain. Despite the similar structure of ATL, CLO, and DES, efficacy of their interaction with NMDAR varies significantly. In the study presented here, we applied molecular modeling methods to investigate the mechanism of binding of ATL, CLO, and DES to NMDAR an...
Source: Biochemistry (Moscow) - March 1, 2024 Category: Biochemistry Source Type: research

Uptake, translocation, and metabolization of amitriptyline, lidocaine, orphenadrine, and tramadol by cress and pea
Environ Sci Pollut Res Int. 2024 Feb 16. doi: 10.1007/s11356-024-32379-x. Online ahead of print.ABSTRACTThe uptake, translocation, and metabolization of four widely used drugs, amitriptyline, orphenadrine, lidocaine, and tramadol, were investigated in a laboratory study. Cress (Lepidium sativum L.) and pea (Pisum sativum L.) were employed as model plants. These plants were grown in tap water containing the selected pharmaceuticals at concentrations ranging from 0.010 to 10 mg L-1, whereby the latter concentration was employed for the (tentative) identification of drug-related metabolites formed within the plant. Thereby, m...
Source: Environmental Science and Pollution Research International - February 16, 2024 Category: Environmental Health Authors: Anna Detzlhofer Christian Grechhamer Lawrence Madikizela Markus Himmelsbach Franz Mlynek Wolfgang Buchberger Christian W Klampfl Source Type: research

The Relevance of Integrating CYP2C19 Phenoconversion Effects into Clinical Pharmacogenetics
Discussion PC of CYP2C19 changes phenotypes but does not improve correlations with serum concentrations. However, only a limited number of patients received perturbators of CYP2C19. Studies with large numbers of patients are still lacking, and thus, it cannot be decided if there are minor differences and which method of correction to use. For the time being, PC is relevant in individual patients treated with CYP2C19-affecting drugs, for example, esomeprazole. To ensure adequate serum concentrations in these patients, this study suggests the use of therap...
Source: Pharmacopsychiatry - February 14, 2024 Category: Psychiatry Authors: Scherf-Clavel, Maike Weber, Heike Unterecker, Stefan Frantz, Amelie Eckert, Andreas Reif, Andreas Deckert, J ürgen Hahn, Martina Tags: Original Paper Source Type: research

In primary care, second-line IBS therapy with amitriptyline vs. placebo reduced symptoms at 6 mo
Ann Intern Med. 2024 Feb 6. doi: 10.7326/J23-0122. Online ahead of print.ABSTRACTFord AC, Wright-Hughes A, Alderson SL, et al; ATLANTIS trialists. Amitriptyline at low-dose and titrated for irritable bowel syndrome as second-line treatment in primary care (ATLANTIS): a randomised, double-blind, placebo-controlled, phase 3 trial. Lancet. 2023;402:1773-1785. 37858323.PMID:38315998 | DOI:10.7326/J23-0122 (Source: Annals of Internal Medicine)
Source: Annals of Internal Medicine - February 5, 2024 Category: Internal Medicine Authors: Tanvi Gupta Brooks D Cash Source Type: research

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This article ha s been corrected online. (Source: JAMA Dermatology)
Source: JAMA Dermatology - January 31, 2024 Category: Dermatology Source Type: research

Molecules, Vol. 29, Pages 676: Direct Immersion & ndash;Solid Phase Microextraction for Therapeutic Drug Monitoring of Patients with Mood Disorders
This article discusses a new method for monitoring drug concentrations in blood samples from patients with mood disorders. The method uses solid-phase microextraction to extract analytes directly from blood samples. It has been adapted to identify the most commonly used drugs in mood disorders, including amitriptyline, citalopram, fluoxetine, paroxetine, sertraline, trazodone, duloxetine, venlafaxine, lamotrigine, quetiapine, olanzapine, and mirtazapine. The analysis is carried out using high-performance liquid chromatography coupled with mass spectroscopy. The proposed DI-SPME/LC-MS method allows for a simple and quick sc...
Source: Molecules - January 31, 2024 Category: Chemistry Authors: Magdalena Świądro-Piętoń Dominika Dudek Renata Wietecha-Pos łuszny Tags: Article Source Type: research

Inhibitory Effects of Tricyclic Antidepressants on Human Liver Microsomal Morphine Glucuronidation: Application of IVIVE to Predict Potential Drug-Drug Interactions in Humans
CONCLUSION: The results suggest that the likelihood of potential clinical DDIs arising from tricyclic antidepressant inhibition on morphine glucuronidation is low.PMID:38270153 | DOI:10.2174/0113892002270594231212090958 (Source: Current Drug Metabolism)
Source: Current Drug Metabolism - January 25, 2024 Category: Drugs & Pharmacology Authors: Verawan Uchaipichat Source Type: research