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https://www.readbyqxmd.com/read/28911626/high-throughput-liquid-chromatography-tandem-mass-spectrometry-method-for-simultaneous-determination-of-fampridine-paroxetine-and-quinidine-in-rat-plasma-application-to-in%C3%A2-vivo-perfusion-study
#1
Suneetha Achanti, Raja Rajeswari Katta
A selective and high-throughput liquid chromatography-mass spectrometry method has been developed and validated for the simultaneous quantification of paroxetine, fampridine, and quinidine in rat plasma using imipramine as an internal standard. Following protein precipitation extraction, the analytes and internal standard were run on XBridge C18 column (150 mm × 4.6 mm, 5 μm) using a gradient mobile phase consisting of 5mM ammonium formate in water (pH 9.0) and acetonitrile in a flow gradience program...
October 2016: Journal of Food and Drug Analysis
https://www.readbyqxmd.com/read/28910072/mapping-the-binding-site-for-escitalopram-and-paroxetine-in-the-human-serotonin-transporter-using-genetically-encoded-photocrosslinkers
#2
Hafsteinn Rannversson, Jacob Andersen, Benny Bang-Andersen, Kristian Strømgaard
In spite of the important role of the human serotonin transporter (hSERT) in depression treatment, the molecular details of how antidepressant drugs bind are still not completely understood, in particular those related to potential high- and low-affinity binding sites in hSERT. Here, we utilize amber codon suppression in hSERT to encode the photocrosslinking unnatural amino acid p-azido-L-phenylalanine into the suggested high- and low-affinity binding sites. We then employ UV-induced crosslinking with azF to map the binding site of escitalopram and paroxetine, two prototypical selective serotonin reuptake inhibitors (SSRIs)...
September 14, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/28904397/study-of-the-link-between-dopamine-transporter-gene-polymorphisms-and-response-to-paroxetin-and-escitalopram-in-patients-with-lifelong-premature-ejaculation
#3
T K Eltonsi, T M Tawfik, L A Rashed, S F GamalEl Din, M A Mahmoud
We evaluated the role of dopamine (DA) transporter gene polymorphism in lifelong premature ejaculation (LPE) and its role in determining the response to paroxetine and escitalopram. Eighty consecutive patients and controls were recruited. Sixty of them suffered from LPE. They were divided into two equal groups. One group received paroxetine 20 mg daily for 3 months and the other one received ecistalopram 20 mg daily for 3 months. Their wives were instructed to measure the intra-vaginal ejaculation latency time using stopwatch...
September 14, 2017: International Journal of Impotence Research
https://www.readbyqxmd.com/read/28903107/dose-escalation-of-antidepressants-in-unipolar-depression-a-meta-analysis-of-double-blind-randomized-controlled-trials
#4
Markus Dold, Lucie Bartova, Rainer Rupprecht, Siegfried Kasper
BACKGROUND: As many patients with unipolar depression do not respond sufficiently to initial antidepressant monotherapy, a dose increase of the current administered antidepressant (dose escalation, high-dose treatment) is frequently carried out as next treatment measure. METHODS: We conducted a meta-analysis which included all double-blind randomized controlled trials (RCTs) comparing a dose increase of antidepressants directly to continuation of standard-dose treatment in unipolar depressive patients who were non- responders to standard-dose pharmacotherapy...
September 14, 2017: Psychotherapy and Psychosomatics
https://www.readbyqxmd.com/read/28873974/therapeutic-drug-monitoring-of-fluoxetine-norfluoxetine-and-paroxetine-a-new-tool-based-on-microextraction-by-packed-sorbent-coupled-to-liquid-chromatography
#5
Paulo Magalhães, Gilberto Alves, Adrián Llerena, Amílcar Falcão
The present article reports the first liquid chromatography (LC) assay for the simultaneous quantification of fluoxetine (FLU), its metabolite norfluoxetine (NFLU) and paroxetine (PAR) in human plasma, applying the microextraction by packed sorbent (MEPS) technology in sample preparation. Chromatographic analysis of FLU, NFLU and PAR was achieved in <13 min on a reverse-phase C18 column using isocratic elution and fluorescence detection (FLD). The mobile phase was composed by an aqueous solution of 25 mM sodium phosphate monobasic anhydrous and 7...
September 1, 2017: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/28859218/incidence-of-early-anxiety-aggravation-in-trials-of-selective-serotonin-reuptake-inhibitors-in-depression
#6
J Näslund, F Hieronymus, J F Emilsson, A Lisinski, S Nilsson, E Eriksson
OBJECTIVE: Selective serotonin reuptake inhibitors (SSRIs) may aggravate anxiety and agitation during the first days of treatment but the frequency of such reactions remains unknown. METHOD: We analysed patient-level data from placebo-controlled trials of sertraline, paroxetine or citalopram in depressed adults. Somatic anxiety, psychic anxiety and psychomotor agitation as assessed using the Hamilton Depression Rating Scale (HDRS) were analysed in all trials (n = 8262); anxiety-related adverse events were analysed in trials investigating paroxetine and citalopram (n = 5712)...
August 31, 2017: Acta Psychiatrica Scandinavica
https://www.readbyqxmd.com/read/28844482/impact-of-selective-serotonin-reuptake-inhibitors-on-neural-crest-stem-cell-formation
#7
Cecilia Vichier-Guerre, Margaret Parker, Yael Pomerantz, Richard H Finnell, Robert M Cabrera
The use of antidepressants in pregnant women is rising, with rates up to 7.5% in the United States. Selective serotonin reuptake inhibitors (SSRIs) are currently the most common antidepressant prescribed to pregnant women. The teratogenic effects of SSRI exposure are debated because of discrepancies in epidemiological studies. As an alternative to epidemiological and animal studies, human embryonic stem cell research (hESC) provides a human-based experimental model to examine the risks of prenatal SSRI exposure...
August 24, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28831260/an-observational-study-of-duloxetine-versus-ssri-monotherapy-in-japanese-patients-with-major-depressive-disorder-subgroup-analyses-of-treatment-effectiveness-for-pain-depressive-symptoms-and-quality-of-life
#8
Atsushi Kuga, Toshinaga Tsuji, Shinji Hayashi, Shinji Fujikoshi, Hirofumi Tokuoka, Aki Yoshikawa, Rodrigo Escobar, Kazuhide Tanaka, Takaharu Azekawa
OBJECTIVE: To examine how clinical and demographic patient baseline characteristics influence effectiveness of duloxetine versus selective serotonin reuptake inhibitor (SSRI) treatment, in real-world Japanese clinical settings of patients with major depressive disorder (MDD) and associated painful physical symptoms (PPS). METHODS: This was a multicenter, 12-week, prospective, observational study in patients with MDD (Quick Inventory of Depressive Symptomatology ≥16) and at least moderate PPS (Brief Pain Inventory-Short Form [BPI-SF] average pain ≥3)...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28831259/an-observational-study-of-duloxetine-versus-ssri-monotherapy-for-the-treatment-of-painful-physical-symptoms-in-japanese-patients-with-major-depressive-disorder-primary-analysis
#9
Atsushi Kuga, Toshinaga Tsuji, Shinji Hayashi, Mako Matsubara, Shinji Fujikoshi, Hirofumi Tokuoka, Aki Yoshikawa, Rodrigo Escobar, Kazuhide Tanaka, Takaharu Azekawa
OBJECTIVE: The objective of this study was to assess the effectiveness of duloxetine monotherapy, in comparison with selective serotonin reuptake inhibitor (SSRI) monotherapy, in the treatment of painful physical symptoms (PPS) in Japanese patients with major depressive disorder (MDD) in real-world clinical settings. METHODS: This was a multicenter, 12-week prospective, observational study. This study enrolled MDD patients with at least moderate PPS, defined as a Brief Pain Inventory-Short Form (BPI-SF) average pain score (item 5) ≥3...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28830118/two-fatal-intoxications-involving-3-methoxyphencyclidine
#10
Christie Mitchell-Mata, Brittany Thomas, Brianna Peterson, Fiona Couper
3- and 4-methoxyphencyclidine (3-MeO-PCP, 4-MeO-PCP), structural analogs of phencyclidine (PCP), were among the first legal PCP alternatives to show up on the novel psychoactive substances (NPS) market in Europe in the 2000s. Their structural similarities to PCP and ketamine likely contribute to their demonstrated dissociative anesthetic effects. Limited information exists in the literature about toxic and lethal concentrations of these drugs in biological samples. This case report presents the first two death cases in Washington State in which 3-MeO-PCP was identified...
July 1, 2017: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/28827882/paroxetine-induced-multifocal-fixed-drug-rash-an-incident-hitherto-unreported
#11
Anupam Das, Priyankar Misra, Amlan Kusum Jana
No abstract text is available yet for this article.
April 2017: Indian Journal of Psychiatry
https://www.readbyqxmd.com/read/28825984/bioaccumulation-of-psychoactive-pharmaceuticals-in-fish-in-an-effluent-dominated-stream
#12
Katerina Grabicova, Roman Grabic, Ganna Fedorova, Jerker Fick, Daniel Cerveny, Jitka Kolarova, Jan Turek, Vladimir Zlabek, Tomas Randak
The treated effluent from sewage treatment plants (STP) is a major source of active pharmaceutical ingredients (APIs) that enter the aquatic environment. Bioaccumulation of 11 selected psychoactive pharmaceuticals (citalopram, clomipramine, haloperidol, hydroxyzine, levomepromazine, mianserin, mirtazapine, paroxetine, sertraline, tramadol and venlafaxine) was examined in Zivny Stream (tributary of the Blanice River, the Czech Republic), which is a small stream highly affected by effluent from the Prachatice STP...
August 8, 2017: Water Research
https://www.readbyqxmd.com/read/28820985/human-bone-marrow-as-a-tissue-in-post-mortem-identification-and-determination-of-psychoactive-substances-screening-methodology
#13
Renata Wietecha-Posłuszny, Sofia Lendor, Magdalena Garnysz, Marcin Zawadzki, Paweł Kościelniak
The aim of this study was to apply a new instrumental approach to the analysis of human bone marrow for forensic purposes. A new screening method for the detection of more than 30 psychoactive drugs in bone marrow was developed and applied to case samples. The drugs used in this study belonged to the following groups: benzodiazepines (BZDs, n=16), tricyclic antidepressants (TCAs, n=5), selective serotonin reuptake inhibitors (SSRI, n=4), serotonin-norepinephrine reuptake inhibitors (n=1), anticonvulsants (n=1), imidazopyridines (n=1) and piperazines (n=3)...
September 1, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28819255/mouse-strain-differences-in-ssri-sensitivity-correlate-with-serotonin-transporter-binding-and-function
#14
Zeng-Liang Jin, Xiao-Fei Chen, Yu-Hua Ran, Xiao-Rong Li, Jie Xiong, Yuan-Yuan Zheng, Na-Na Gao, Yun-Feng Li
Selective serotonin reuptake inhibitors (SSRIs) bind 5-HT transporters, leading to the accumulation of 5-HT and amelioration of depression. Although different mouse strains show varying sensitivity to SSRIs in mouse models of depression, the underlying mechanism of these strain differences remains unclear. Here, the SSRI citalopram dose-dependently reduced immobility time in both the FST and TST in DBA/2J mice but not C57BL/6J mice, whereas fluoxetine showed the opposite results. Paroxetine similarly reduced immobility time in both strains...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28813145/selective-uptake-and-bioaccumulation-of-antidepressants-in-fish-from-effluent-impacted-niagara-river
#15
Prapha Arnnok, Randolph R Singh, Rodjana Burakham, Alicia Pérez-Fuentetaja, Diana S Aga
The continuous release of pharmaceuticals and personal care products (PPCPs) into freshwater systems impacts the health of aquatic organisms. This study evaluates the concentrations and bioaccumulation of PPCPs and the selective uptake of antidepressants in fish from the Niagara River, which connects two of the North American Great lakes (Erie and Ontario). The Niagara River receives PPCPs from different wastewater treatment plants (WWTPs) situated along the river and Lake Erie. Of the 22 targeted PPCPs, 11 were found at part-per-billion levels in WWTP effluents and at part-per-trillion levels in river water samples...
September 1, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28811831/potent-phosphodiesterase-inhibition-and-nitric-oxide-release-stimulation-of-anti-impotence-thai-medicinal-plants-from-manosroi-iii-database
#16
Aranya Manosroi, Theeraphong Tangjai, Charinya Chankhampan, Worapaka Manosroi, Yaravee Najarut, Worapong Kitdamrongtham, Jiradej Manosroi
Seven plants in the top rank were selected from the "MANOSROI III" database using the two Thai keywords which meant impotence and sexual tonic. Boesenbergia rotunda (L.) Mansf. extract [EDP1-001(1)] gave the highest PDE inhibition activity of 4.36-fold sildenafil, a standard anti-impotence drug. Plumbago indica Linn. extract [EDP2-001(1)] exhibited the highest NO release stimulation activity of 666.85% which was 1.50-fold acetylcholine, a standard drug. Most selected plant extracts were nontoxic to EA.hy926 cells at 1...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28802861/contrasting-effects-of-vortioxetine-and-paroxetine-on-pineal-gland-biochemistry-in-a-tryptophan-depletion-model-of-depression-in-female-rats
#17
M Franklin, N Hlavacova, Y Li, I Bermudez, A Csanova, C Sanchez, D Jezova
We studied the effects of the multi-modal antidepressant, vortioxetine and the SSRI, paroxetine on pineal melatonin and monoamine synthesis in a sub-chronic tryptophan (TRP) depletion model of depression based on a low TRP diet. Female Sprague-Dawley rats were randomised to groups a) control, b) low TRP diet, c) low TRP diet+paroxetine and d) low TRP diet+vortioxetine. Vortioxetine was administered via the diet (0.76mg/kg of food weight) and paroxetine via drinking water (10mg/kg/day) for 14days. Both drugs resulted in SERT occupancies >90%...
August 10, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28791695/use-of-antidepressants-and-risk-of-epithelial-ovarian-cancer
#18
Lina S Mørch, Christian Dehlendorff, Louise Baandrup, Søren Friis, Susanne K Kjaer
Antidepressants are widely prescribed among women to treat depression and anxiety disorders, but studies of their effects on gynecological cancer risk are sparse. We assessed associations between various antidepressants and risk of epithelial ovarian cancer. By using Danish nationwide registers, we identified all women (cases) aged 30-84 years with incident epithelial (serous, endometrioid, clear cell or mucinous) ovarian cancer during 2000-2011 (n = 4,103) and matched each case to 20 population controls (n = 58,706) by risk-set matching...
August 9, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28775189/comparative-efficacy-and-acceptability-of-antidepressant-treatment-in-poststroke-depression-a-multiple-treatments-meta-analysis
#19
Yefei Sun, Yifan Liang, Yang Jiao, Jueying Lin, Huiling Qu, Junjie Xu, Chuansheng Zhao
OBJECTIVE: The aim of this study is to create a rank order of the comparative efficacy and acceptability (risk of all-cause discontinuation) of antidepressant treatment in poststroke depression (PSD) by integrating direct and indirect evidence. DESIGN: Multiple-treatments meta-analysis of randomised controlled trials. PARTICIPANTS: Patients with depression following stroke. INTERVENTIONS: 10 antidepressants and placebo in the acute treatment of PSD...
August 3, 2017: BMJ Open
https://www.readbyqxmd.com/read/28770276/a-comparative-study-of-qt-prolongation-with-serotonin-reuptake-inhibitors
#20
Ana Ojero-Senard, Justine Benevent, Emmanuelle Bondon-Guitton, Geneviève Durrieu, Leila Chebane, Melanie Araujo, Francois Montastruc, Jean-Louis Montastruc
BACKGROUND: QT interval prolongations were described with citalopram and escitalopram. However, the effects of the other serotonin reuptake inhibitors (SRIs) remained discussed. In order to identify a putative signal with other SRIs, the present study investigates the reports of QT interval prolongation with SRIs in two pharmacovigilance databases (PVDB). METHODS: Two kinds of investigations were performed: (1) a comparative study in VigiBase®, the WHO PVDB, where notifications of QT prolongation with six SRIs (citalopram, escitalopram, fluoxetine, fluvoxamine, paroxetine, sertraline) were selected...
August 3, 2017: Psychopharmacology
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