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reinforcement on serotonin

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https://www.readbyqxmd.com/read/29040827/effects-of-lorcaserin-belviq-%C3%A2-on-nicotine-and-food-maintained-responding-in-non-human-primates
#1
David S Jacobs, Claire E Barkin, Michelle R Kohut, Jack Bergman, Stephen J Kohut
BACKGROUND: Accumulating evidence suggests that the FDA-approved serotonin 5-HT2C receptor agonist, lorcaserin (Belviq(®)), may be a promising candidate for the management of substance use disorders, including nicotine addiction. The present study was conducted to determine the efficacy and selectivity of acute or continuous lorcaserin treatment for decreasing the reinforcing effects of nicotine in a primate species. METHODS: Adult rhesus monkeys (n=4) with a history of nicotine self-administration (>2years) responded for injections of nicotine (0...
October 10, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/29028556/buspirone-maintenance-does-not-alter-the-reinforcing-subjective-and-cardiovascular-effects-of-intranasal-methamphetamine
#2
Anna R Reynolds, Justin C Strickland, William W Stoops, Joshua A Lile, Craig R Rush
BACKGROUND: Medications development efforts for methamphetamine-use disorder have targeted central monoamines because these systems are directly involved in the effects of methamphetamine. Buspirone is a dopamine autoreceptor and D3 receptor antagonist and partial agonist at serotonin 1A receptors, making it a logical candidate medication for methamphetamine-use disorder. Buspirone effects on abuse-related behaviors of methamphetamine have been mixed in clinical and preclinical studies...
September 22, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28993683/short-term-changes-in-the-proteome-of-human-cerebral-organoids-induced-by-5-meo-dmt
#3
Vanja Dakic, Juliana Minardi Nascimento, Rafaela Costa Sartore, Renata de Moraes Maciel, Draulio B de Araujo, Sidarta Ribeiro, Daniel Martins-de-Souza, Stevens K Rehen
Dimethyltryptamines are entheogenic serotonin-like molecules present in traditional Amerindian medicine recently associated with cognitive gains, antidepressant effects, and changes in brain areas related to attention. Legal restrictions and the lack of adequate experimental models have limited the understanding of how such substances impact human brain metabolism. Here we used shotgun mass spectrometry to explore proteomic differences induced by 5-methoxy-N,N-dimethyltryptamine (5-MeO-DMT) on human cerebral organoids...
October 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28889212/cocaine-like-discriminative-stimulus-effects-of-norepinephrine-preferring-monoamine-releasers-time-course-and-interaction-studies-in-rhesus-monkeys
#4
Stephen J Kohut, David S Jacobs, Richard B Rothman, John S Partilla, Jack Bergman, Bruce E Blough
RATIONALE: The therapeutic potential of monoamine releasers with prominent dopaminergic effects is hindered by their high abuse liability. OBJECTIVES: The present study examined the effects of several novel "norepinephrine (NE)-preferring" monoamine releasers relative to non-selective monoamine releasers, d-amphetamine and d-methamphetamine, in rhesus monkeys trained to discriminate cocaine. NE-preferring releasers were approximately 13-fold more potent for NE compared to dopamine release and ranged in potency for serotonin release (PAL-329 < l-methamphetamine < PAL-169)...
September 9, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28868576/choice-between-delayed-food-and-immediate-opioids-in-rats-treatment-effects-and-individual-differences
#5
Leigh V Panlilio, Maria E Secci, Charles W Schindler, Charles W Bradberry
RATIONALE: Addiction involves maladaptive choice behavior in which immediate drug effects are valued more than delayed nondrug rewards. OBJECTIVES AND METHODS: To model this behavior and extend our earlier work with the prescription opioid oxycodone, we allowed rats to choose between immediate intravenous delivery of the short-acting opioid remifentanil and delayed delivery of highly palatable food pellets. Treatment drugs were tested on a baseline where remifentanil was preferred over food...
September 4, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28831734/interactions-of-hallucinogens-with-the-glutamatergic-system-permissive-network-effects-mediated-through-cortical-layer-v-pyramidal-neurons
#6
Gerard J Marek
Recordings made from layer V (L5) pyramidal cells of the prefrontal cortex (PFC) and neocortex in rodent slice preparations have shown that serotonin (5-hydroxytryptamine, 5-HT) and serotonergic hallucinogens induce an increase in the frequency of spontaneous excitatory postsynaptic currents (EPSCs) in the apical dendritic field by activating 5-HT2A receptors. Serotonergic hallucinogens induce late EPSCs and increase recurrent network activity when subcortical or mid-cortical regions are stimulated at low frequencies (e...
August 23, 2017: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/28777821/anatomy-and-behavioral-function-of-serotonin-receptors-in-drosophila-melanogaster-larvae
#7
Annina Huser, Melanie Eschment, Nazli Güllü, Katharina A N Collins, Kathrin Böpple, Lyubov Pankevych, Emilia Rolsing, Andreas S Thum
The biogenic amine serotonin (5-HT) is an important neuroactive molecule in the central nervous system of the majority of animal phyla. 5-HT binds to specific G protein-coupled and ligand-gated ion receptors to regulate particular aspects of animal behavior. In Drosophila, as in many other insects this includes the regulation of locomotion and feeding. Due to its genetic amenability and neuronal simplicity the Drosophila larva has turned into a useful model for studying the anatomical and molecular basis of chemosensory behaviors...
2017: PloS One
https://www.readbyqxmd.com/read/28719225/association-between-social-support-and-self-care-behaviors-in-adults-with-chronic-obstructive-pulmonary-disease
#8
Zijing Chen, Vincent S Fan, Basia Belza, Kenneth Pike, Huong Q Nguyen
RATIONALE: Higher social support is associated with a better quality of life and functioning in adults with chronic obstructive pulmonary disease (COPD). OBJECTIVES: To determine the association between structural and functional social support and self-care behaviors in adults with COPD. METHODS: This was a longitudinal study using data from the CASCADE (COPD Activity: Serotonin Transporter, Cytokines, and Depression) study which was focused on depression and functioning in COPD...
July 18, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28655626/differential-effects-of-perinatal-exposure-to-antidepressants-on-learning-and-memory-acoustic-startle-anxiety-and-open-field-activity-in-sprague-dawley-rats
#9
Jenna L N Sprowles, Jillian R Hufgard, Arnold Gutierrez, Rebecca A Bailey, Sarah A Jablonski, Michael T Williams, Charles V Vorhees
Most antidepressants inhibit monoamine reuptake. Selective serotonin (5-HT) reuptake inhibitors (SSRIs) act on the 5-HT transporter (SERT) whereas norepinephrine-dopamine reuptake inhibitors (NDRIs) act on the norepinephrine and dopamine transporters. Epidemiological reports link SSRI use during pregnancy to an increased prevalence of autism spectrum disorder (ASD). We previously showed that perinatal exposure to the SSRI citalopram (CIT) results in rodent offspring that exhibit a number of behaviors consistent with an ASD-like phenotype...
October 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28585320/blockade-of-the-5-ht-transporter-contributes-to-the-behavioural-neuronal-and-molecular-effects-of-cocaine
#10
Linda D Simmler, Allison M J Anacker, Michael H Levin, Nina M Vaswani, Paul J Gresch, Alex G Nackenoff, Noelle C Anastasio, Sonja J Stutz, Kathryn A Cunningham, Jing Wang, Bing Zhang, L Keith Henry, Adele Stewart, Jeremy Veenstra-VanderWeele, Randy D Blakely
BACKGROUND AND PURPOSE: The psychostimulant cocaine induces complex molecular, cellular and behavioural responses as a consequence of inhibiting presynaptic dopamine, noradrenaline and 5-HT transporters. To elucidate 5-HT transporter (SERT)-specific contributions to cocaine action, we evaluated cocaine effects in the SERT Met172 knock-in mouse, which expresses a SERT coding substitution that eliminates high-affinity cocaine recognition. EXPERIMENTAL APPROACH: We measured the effects of SERT Met172 on cocaine antagonism of 5-HT re-uptake using ex vivo synaptosome preparations and in vivo microdialysis...
August 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28584928/effects-of-the-serotonin-2c-receptor-agonist-way163909-on-the-abuse-related-effects-and-mesolimbic-dopamine-neurochemistry-induced-by-abused-stimulants-in-rhesus-monkeys
#11
Laís F Berro, Maylen Perez Diaz, Eric Maltbie, Leonard L Howell
RATIONALE: Accumulating evidence shows that the serotonergic system plays a major role in psychostimulant abuse through its interactions with the dopaminergic system. Studies indicate that serotonin 5-HT2C receptors are one of the main classes of receptors involved in mediating the influence of serotonin in drug abuse. OBJECTIVE: The aim of the present study was to evaluate the effects of the selective serotonin 5-HT2C receptor agonist WAY163909 on the behavioral neuropharmacology of cocaine and methamphetamine in adult rhesus macaques...
June 5, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28485406/inducing-a-long-term-potentiation-in-the-dentate-gyrus-is-sufficient-to-produce-rapid-antidepressant-like-effects
#12
A Kanzari, C Bourcier-Lucas, A Freyssin, D N Abrous, N Haddjeri, G Lucas
Recent hypotheses propose that one prerequisite to obtain a rapid antidepressant (AD) effect would reside in processes of synaptic reinforcement occurring within the dentate gyrus (DG) of the hippocampus independently from neurogenesis. However, to date no relationship has been established between an increased DG synaptic plasticity, and rapid AD-like action. To the best of our knowledge, this study shows for the first time that inducing a long-term potentiation (LTP) within the DG by stimulating the perforant pathway (PP) is sufficient to induce such effects...
May 9, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28412411/mirtazapine-and-ketanserin-alter-preference-for-gambling-like-schedules-of-reinforcement-in-rats
#13
Amanda L Persons, Stephanie E Tedford, T Celeste Napier
Drug and behavioral addictions have overlapping features, e.g., both manifest preference for larger, albeit costlier, reinforcement options in cost/benefit decision-making tasks. Our prior work revealed that the mixed-function serotonergic compound, mirtazapine, attenuates behaviors by rats motivated by abused drugs. To extend this work to behavioral addictions, here we determined if mirtazapine and/or ketanserin, another mixed-function serotonin-acting compound, can alter decision-making in rats that is independent of drug (or food)-motivated reward...
April 12, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28374939/diagnostic-accuracy-of-igg-specific-versus-polyspecific-enzyme-linked-immunoassays-in-heparin-induced-thrombocytopenia-a-systematic-review-and-meta-analysis
#14
H D Husseinzadeh, P A Gimotty, A M Pishko, M Buckley, T E Warkentin, A Cuker
Essentials Immunoassay specificity varies in heparin-induced thrombocytopenia (HIT) testing. This meta-analysis examined 9 studies that tested samples by both IgG and polyspecific methods. IgG-specific assays confer superior diagnostic accuracy compared with polyspecific assays. These results further support recommendations in favor of IgG-specific testing. SUMMARY: Background There are conflicting data on whether the IgG-specific or polyspecific antiplatelet factor 4/heparin (PF4/H) enzyme-linked immunosorbent assay (ELISA) is preferred for the laboratory diagnosis of heparin-induced thrombocytopenia (HIT)...
June 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28341756/distress-disease-desire-perspectives-on-the-medicalisation-of-premature-ejaculation
#15
Ylva Söderfeldt, Adam Droppe, Tim Ohnhäuser
The discovery that certain selective serotonin reuptake inhibitors delay ejaculation and the later development and approval of dapoxetine as an on-demand treatment option has led to a dramatic increase in medical interest in premature ejaculation. This paper analyses the diagnostic criteria and the discussion within the medical community about suitable treatments against the backdrop of theories of science, sex and gender. Our conclusion is that the diagnosis itself and the suggested treatments contribute to normative models of sexual conduct and therefore reinforce the norms that cause patients' distress over ejaculating 'too soon'...
March 23, 2017: Journal of Medical Ethics
https://www.readbyqxmd.com/read/28291298/-neurobiology-of-alcohol-dependence-and-implications-on-treatment
#16
Ertuğrul Eşel, Köksal Dinç
The process of alcohol dependence has been conceptualized as a progress from controlled alcohol intake to compulsive alcohol consumption or a shift from alcohol intake for pleasure to compulsory alcohol seeking behavior. Hereditary and physical factors and the interaction of individuals with their environment, as well as permanent changes in the neurotransmitter and neurohormonal systems in the brain due to alcohol use, play the most important role in the etiology of alcohol dependence. The effects of ethanol on the neurotransmitter, neuropeptide and neuroendocrine systems not only account for its acute physiological and euphoric/reinforcing effects but also seem to be responsible for the development of dependence...
2017: Türk Psikiyatri Dergisi, Turkish Journal of Psychiatry
https://www.readbyqxmd.com/read/28237550/of-fish-and-mirrors-fluoxetine-disrupts-aggression-and-learning-for-social-rewards
#17
Benjamin R Eisenreich, Susan Greene, Allen Szalda-Petree
Aggressive signaling is a key social behavior of male Siamese fighting fish (Betta splendens). Successfully establishing a territory and defending it from intruders has direct fitness effects, making Betta splendens a prime model for studies examining the biological underpinnings of aggressive behavior. Current research has outlined serotonin transporter pathways as one key component for the engagement and coordination of aggressive behavior in Betta splendens. Using the selective serotonin reuptake inhibitor fluoxetine, we examined the impact of 10μmol exposures on associative learning and aggression between mirror and conspecific social reinforcers...
February 22, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28108358/neurochemical-and-metabolic-effects-of-acute-and-chronic-alcohol-in-the-human-brain-studies-with-positron-emission-tomography
#18
REVIEW
Nora D Volkow, Corinde E Wiers, Ehsan Shokri-Kojori, Dardo Tomasi, Gene-Jack Wang, Ruben Baler
The use of Positron emission tomography (PET) to study the effects of acute and chronic alcohol on the human brain has enhanced our understanding of the mechanisms underlying alcohol's rewarding effects, the neuroadaptations from chronic exposure that contribute to tolerance and withdrawal, and the changes in fronto-striatal circuits that lead to loss of control and enhanced motivation to drink that characterize alcohol use disorders (AUD). These include studies showing that alcohol's reinforcing effects may result not only from its enhancement of dopaminergic, GABAergic and opioid signaling but also from its caloric properties...
January 18, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28097008/preclinical-findings-predicting-efficacy-and-side-effect-profile-of-ly2940094-an-antagonist-of-nociceptin-receptors
#19
Jeffrey M Witkin, Linda M Rorick-Kehn, Mark J Benvenga, Benjamin L Adams, Scott D Gleason, Karen M Knitowski, Xia Li, Steven Chaney, Julie F Falcone, Janice W Smith, Julie Foss, Kirsti Lloyd, John T Catlow, David L McKinzie, Kjell A Svensson, Vanessa N Barth, Miguel A Toledo, Nuria Diaz, Celia Lafuente, Alma Jiménez, Alfonso Benito, Conception Pedregal, Maria A Martínez-Grau, Anke Post, Michael A Ansonoff, John E Pintar, Michael A Statnick
Nociceptin/Orphanin FQ (N/OFQ) is a 17 amino acid peptide whose receptor is designated ORL1 or nociceptin receptor (NOP). We utilized a potent, selective, and orally bioavailable antagonist with documented engagement with NOP receptors in vivo to assess antidepressant- and anxiolytic-related pharmacological effects of NOP receptor blockade along with measures of cognitive and motor impingement. LY2940094 ([2-[4-[(2-chloro-4,4-difluoro-spiro[5H-thieno[2,3-c]pyran-7,4'-piperidine]-1'-yl)methyl]-3-methyl-pyrazol-1-yl]-3-pyridyl]methanol) displayed antidepressant-like behavioral effects in the forced-swim test in mice, an effect absent in NOP (-/-) mice...
December 2016: Pharmacology Research & Perspectives
https://www.readbyqxmd.com/read/27986974/effects-of-a-serotonin-2c-agonist-and-a-2a-antagonist-on-actigraphy-based-sleep-parameters-disrupted-by-methamphetamine-self-administration-in-rhesus-monkeys
#20
Maylen Perez Diaz, Monica L Andersen, Kenner C Rice, Leonard L Howell
Sleep disorders and substance abuse are highly comorbid and we have previously shown that methamphetamine self-administration significantly disrupts activity-based sleep parameters in rhesus monkeys. To the best of our knowledge, no study has evaluated the effectiveness of any pharmacological intervention to attenuate the effects of methamphetamine on nighttime activity under well-controlled conditions in laboratory animals. Thus, we examined the effects of a 5-HT2C receptor agonist, WAY163909, and a 5-HT2A receptor antagonist, M100907, given alone and in combination, on actigraphy-based sleep parameters disrupted by methamphetamine self-administration in non-human primates...
June 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
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