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Journal of Psychopharmacology

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https://www.readbyqxmd.com/read/28071216/disinhibition-of-the-rat-prelimbic-cortex-promotes-serotonergic-activation-of-the-dorsal-raphe-nucleus-and-panicolytic-like-behavioral-effects
#1
Paula Sm Yamashita, Ailton Spiacci, James E Hassel, Christopher A Lowry, Helio Zangrossi
Several studies have shown that serotonin plays a dual role in the modulation of defensive behaviors related to anxiety and panic. A major source of serotonergic projections to limbic structures responsible for this modulation is the dorsal raphe nucleus (DR). Anatomical studies indicate that the prelimbic (PL) cortex sends dense glutamatergic projections to the DR, leading to stimulation or inhibition of serotonin release in structures innervated by the DR. The objective of the present study was to investigate if GABAergic disinhibition of the PL by means of local administration of picrotoxin (PIC), a chloride channel blocker, can affect serotonergic tone and the expression of defensive behaviors related to anxiety and panic...
January 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28071178/psychotropic-drugs-and-ventricular-repolarisation-the-effects-on-qt-interval-t-peak-to-t-end-interval-and-qt-dispersion
#2
Tiziano Acciavatti, Giovanni Martinotti, Mariangela Corbo, Eduardo Cinosi, Matteo Lupi, Fabrizio Ricci, Rosa Di Scala, Emilia D'Ugo, Viola De Francesco, Raffaele De Caterina, Massimo di Giannantonio
OBJECTIVE: We aimed to investigate in a clinical setting, the effects of different classes of psychotropic drugs on cardiac electrophysiological measures linked with an increased risk of sudden cardiac death. METHODS: We conducted a cross-sectional study in a population of 1059 psychiatric inpatients studying the effects of various psychotropic drugs on the T-peak to T-end (TpTe) interval, QT dispersion and QT interval. RESULTS: Methadone use showed a strong association with TpTe prolongation (odds ratio (OR)=12...
January 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/27940500/binge-ethanol-drinking-during-adolescence-modifies-cocaine-responses-in-mice
#3
Anna Esteve-Arenys, Irene Gracia-Rubio, Lídia Cantacorps, Oscar J Pozo, Josep Marcos, Marta Rodríguez-Árias, José Miñarro, Olga Valverde
Binge ethanol drinking is an emerging pattern of excessive consumption among adolescents and young adults. Repeated ethanol intoxication has negative consequences during critical periods of brain development. Therefore, binge ethanol intake represents a vulnerability factor that promotes subsequent manifestations of neuropsychiatric disorders. In this study, we investigated the effects of oral binge ethanol intake during adolescence on the subsequent effects of cocaine in C57BL/6 mice. Firstly, we evaluated the oral ethanol intake of two binge ethanol procedures with different ethanol concentrations (20% v/v versus 30%, v/v)...
December 9, 2016: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/27927703/pharmacokinetics-and-pharmacodynamics-of-oral-mecamylamine-development-of-a-nicotinic-acetylcholine-receptor-antagonist-cognitive-challenge-test-using-modelling-and-simulation
#4
Ricardo Alvarez-Jimenez, Anne Catrien Baakman, Jasper Stevens, Sebastiaan C Goulooze, Ellen P Hart, Robert Rissmann, Joop Ma van Gerven, Geert Jan Groeneveld
A pharmacologic challenge model with a nicotinic antagonist could be an important tool not only to understand the complex role of the nicotinic cholinergic system in cognition, but also to develop novel compounds acting on the nicotinic acetylcholine receptor. The objective was to develop a pharmacokinetic-pharmacodynamic (PKPD) model using nonlinear mixed effects (NLME) methods to quantitate the pharmacokinetics of three oral mecamylamine doses (10, 20 and 30 mg) and correlate the plasma concentrations to the pharmacodynamic effects on a cognitive and neurophysiologic battery of tests in healthy subjects...
December 7, 2016: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/27899689/herbal-medicine-for-management-of-the-behavioural-and-psychological-symptoms-of-dementia-bpsd-a-systematic-review-and-meta-analysis
#5
REVIEW
Anna J Hyde, Brian H May, Lin Dong, Mei Feng, Shaonan Liu, Xinfeng Guo, Anthony Lin Zhang, Chuanjian Lu, Charlie Changli Xue
Management of the behavioural and psychological symptoms of dementia remains a challenge worldwide. Herbal medicines may play a role in the development of new interventions. To determine effects of herbal medicines for management of the behavioural and psychological symptoms of dementia, meta-analysis was conducted of 31 controlled trials (3613 participants). Frequently tested herbal medicines were the Ginkgo biloba leaf extract EGb 761 (seven studies) and the multi-ingredient formula Yokukansan (eight studies)...
November 29, 2016: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/27903793/the-serotonin-5-ht2c-receptor-and-the-non-addictive-nature-of-classic-hallucinogens
#6
REVIEW
Clinton E Canal, Kevin S Murnane
Classic hallucinogens share pharmacology as serotonin 5-HT2A, 5-HT2B, and 5-HT2C receptor agonists. Unique among most other Schedule 1 drugs, they are generally non-addictive and can be effective tools in the treatment of addiction. Mechanisms underlying these attributes are largely unknown. However, many preclinical studies show that 5-HT2C agonists counteract the addictive effects of drugs from several classes, suggesting this pharmacological property of classic hallucinogens may be significant. Drawing from a comprehensive analysis of preclinical behavior, neuroanatomy, and neurochemistry studies, this review builds rationale for this hypothesis, and also proposes a testable, neurobiological framework...
November 15, 2016: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/27852961/effect-of-antipsychotic-pharmacotherapy-on-clinical-outcomes-of-intermittent-theta-burst-stimulation-for-refractory-depression
#7
Laura Schulze, Gary Remington, Peter Giacobbe, Sidney H Kennedy, Daniel M Blumberger, Zafiris J Daskalakis, Jonathan Downar
Theta-burst stimulation is an emerging protocol for repetitive transcranial magnetic stimulation that takes 1-3 min to administer, yet offers equal/superior potency to conventional protocols lasting 30-60 min. However, preclinical evidence suggests that D2 receptor blockade may abolish the acute effects of theta-burst stimulation on synaptic facilitation or inhibition. As many patients presenting for repetitive transcranial magnetic stimulation are taking antipsychotic medications as augmentation for treatment-resistant depression, this finding is potentially concerning for the implementation of theta-burst stimulation in clinical settings...
November 9, 2016: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/27856682/capturing-schizophrenia-like-prodromal-symptoms-in-a-spinocerebellar-ataxia-17-transgenic-rat
#8
Davide Amato, Fabio Canneva, Huu Phuc Nguyen, Peter Bauer, Olaf Riess, Stephan von Hörsten, Christian P Müller
RATIONALE: The polyglutamine disease spinocerebellar ataxia type 17 (SCA17) is a neurodegenerative disease leading to severe neurological symptoms during development. Additionally, patients affected by SCA17 display psychosis earlier than their motor disorders. OBJECTIVE: Here the putative psychotic phenotype and endophenotype of transgenic SCA17 rats was examined. METHODS: The expression of schizophrenia-like symptoms was evaluated over a longitudinal period before and after the onset of neurological symptoms in SCA17...
November 8, 2016: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28072037/benzodiazepine-maintenance-in-opiate-substitution-treatment-good-or-bad-a-retrospective-primary-care-case-note-review
#9
Adam Bakker, Emmanuel Streel
BACKGROUND: Co-prescribing benzodiazepines to patients in opiate substitution treatment is controversial and often alleged to increase mortality. In an inner-London general practice, patients with problematic benzodiazepine co-dependence were allowed benzodiazepine maintenance treatment (BMT) since 1994, providing an opportunity for analysis. METHOD: 1) Case-note review of all 278 opiate substitution treatment patients, accruing 1289 patient treatment years; 46% had concurrent BMT...
January 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28072036/differential-effects-of-the-mek-inhibitor-sl327-on-the-acquisition-and-expression-of-ethanol-elicited-conditioned-place-preference-and-aversion-in-mice
#10
Michela Rosas, Simona Porru, Rosanna Longoni, Liliana Spina, Alessandra T Peana, Maria Collu, Elio Acquas
The involvement of mitogen-activating extracellular kinase (MEK) in place conditioning may vary depending on the motivational sign (positive or negative) and nature (pharmacological or nociceptive) of the unconditioned stimulus (US) and on the phase (acquisition or expression) of the learning process. This study investigated the role of MEK on the acquisition and expression of ethanol-elicited (given 2 g/kg) backward (preference, CPP) and forward (aversion, CPA) place conditioning. The MEK inhibitor SL327 (50 mg/kg for CPP, and 50 and 100 mg/kg for CPA) was administered to CD-1 mice 60 minutes before an ethanol dose (acquisition) or 60 minutes before the post-conditioning tests (expression)...
January 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/27940499/the-effects-of-adolescent-methylphenidate-exposure-on-the-behavioral-and-brain-derived-neurotrophic-factor-response-to-nicotine
#11
Elizabeth D Cummins, Kristen K Leedy, John M Dose, Daniel J Peterson, Seth L Kirby, Liza J Hernandez, Russell W Brown
This study analyzed the interaction of adolescent methylphenidate on the behavioral response to nicotine and the effects of these drug treatments on brain-derived neurotrophic factor in the nucleus accumbens and hippocampus in male and female Sprague-Dawley rats. Animals were intraperitoneal administered 1 mg/kg methylphenidate or saline using a "school day" regimen (five days on, two days off) beginning on postnatal day (P)28 and throughout behavioral testing. In Experiment 1, animals were intraperitoneal administered 0...
January 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/27649775/altered-reward-expectancy-in-individuals-with-recent-methamphetamine-dependence
#12
Amanda Bischoff-Grethe, Colm G Connolly, Stephan J Jordan, Gregory G Brown, Martin P Paulus, Susan F Tapert, Robert K Heaton, Steven P Woods, Igor Grant
BACKGROUND: Chronic methamphetamine use may lead to changes in reward-related function of the ventral striatum and caudate nucleus. Whether methamphetamine-dependent individuals show heightened reactivity to positively valenced stimuli (i.e. positive reinforcement mechanisms), or an exaggerated response to negatively valenced stimuli (i.e. driven by negative reinforcement mechanisms) remains unclear. This study investigated neural functioning of expectancy and receipt for gains and losses in adults with (METH+) and without (METH-) histories of methamphetamine dependence...
January 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/27909175/psilocybin-promising-results-in-double-blind-trials-require-confirmation-by-real-world-evidence
#13
Alasdair Breckenridge, Diederick E Grobbee
No abstract text is available yet for this article.
December 2016: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/27909174/psilocybin-assisted-psychotherapy-for-dying-cancer-patients-aiding-the-final-trip
#14
David Spiegel
No abstract text is available yet for this article.
December 2016: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/27909173/the-role-of-psychedelics-in-palliative-care-reconsidered-a-case-for-psilocybin
#15
Benjamin Kelmendi, Philip Corlett, Mohini Ranganathan, Cyril D'Souza, John H Krystal
No abstract text is available yet for this article.
December 2016: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/27909172/the-successful-return-of-psychedelics-to-psychiatry
#16
Herbert D Kleber
No abstract text is available yet for this article.
December 2016: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/27909171/psilocybin-for-depression-and-anxiety-associated-with-life-threatening-illnesses
#17
John D McCorvy, Reid Hj Olsen, Bryan L Roth
No abstract text is available yet for this article.
December 2016: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/27909170/psilocybin-and-palliative-end-of-life-care
#18
Richard C Shelton, Peter S Hendricks
No abstract text is available yet for this article.
December 2016: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/27909169/psycho-existential-distress-in-cancer-patients-a-return-to-entheogens
#19
Craig D Blinderman
No abstract text is available yet for this article.
December 2016: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/27909168/psilocybin-in-end-of-life-care-implications-for-further-research
#20
Paul Summergrad
No abstract text is available yet for this article.
December 2016: Journal of Psychopharmacology
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