keyword
MENU ▼
Read by QxMD icon Read
search

dopamine 5 receptor

keyword
https://www.readbyqxmd.com/read/28212944/acute-and-long-term-effects-of-adolescent-methylphenidate-on-decision-making-and-dopamine-receptor-mrna-expression-in-the-orbitofrontal-cortex
#1
Leslie R Amodeo, Eliza Jacobs-Brichford, Matthew S McMurray, Jamie D Roitman
Though commonly used as a treatment for ADHD, the psychostimulant methylphenidate (MPH) is also misused and abused in adolescence in both clinical and general populations. Although MPH acts via pathways activated by other drugs of abuse, the short- and long-term effects of MPH on reward processing in learning and decision-making are not clearly understood. We examined the effect of adolescent MPH treatment on a battery of reward-directed behaviors both in adolescence during its administration and in adulthood after its discontinuation...
February 14, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28203201/modulation-of-synaptic-plasticity-in-the-cortex-needs-to-understand-all-the-players
#2
REVIEW
Claire N J Meunier, Pascal Chameau, Philippe M Fossier
The prefrontal cortex (PFC) is involved in cognitive tasks such as working memory, decision making, risk assessment and regulation of attention. These functions performed by the PFC are supposed to rely on rhythmic electrical activity generated by neuronal network oscillations determined by a precise balance between excitation and inhibition balance (E/I balance) resulting from the coordinated activities of recurrent excitation and feedback and feedforward inhibition. Functional alterations in PFC functions have been associated with cognitive deficits in several pathologies such as major depression, anxiety and schizophrenia...
2017: Frontiers in Synaptic Neuroscience
https://www.readbyqxmd.com/read/28197685/test-retest-measurements-of-dopamine-d1-type-receptors-using-simultaneous-pet-mri-imaging
#3
Simon Kaller, Michael Rullmann, Marianne Patt, Georg-Alexander Becker, Julia Luthardt, Johanna Girbardt, Philipp M Meyer, Peter Werner, Henryk Barthel, Anke Bresch, Thomas H Fritz, Swen Hesse, Osama Sabri
PURPOSE: The role of dopamine D1-type receptor (D1R)-expressing neurons in the regulation of motivated behavior and reward prediction has not yet been fully established. As a prerequisite for future research assessing D1-mediated neuronal network regulation using simultaneous PET/MRI and D1R-selective [(11)C]SCH23390, this study investigated the stability of central D1R measurements between two independent PET/MRI sessions under baseline conditions. METHODS: Thirteen healthy volunteers (7 female, age 33 ± 13 yrs) underwent 90-min emission scans, each after 90-s bolus injection of 486 ± 16 MBq [(11)C]SCH23390, on two separate days within 2-4 weeks using a PET/MRI system...
February 14, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28194935/a-potential-pet-radiotracer-for-the-5-ht2c-receptor-synthesis-and-in-vivo-evaluation-of-4-3-18-f-fluorophenethoxy-pyrimidine
#4
Juhyeon Kim, Byung Seok Moon, Byung Chul Lee, Ho-Young Lee, Hak Joong Kim, Hyunah Choo, Ae Nim Pae, Yong Seo Cho, Sun-Joon Min
The serotonin 2C receptor subtype (5-HT2C) is an excitatory 5-HT receptor widely distributed throughout the central nerve system. As the 5-HT2C receptor displays multiple actions on various neurotransmitter systems including glutamate, dopamine, epinephrine and -aminobutyric acid (GABA), abnormalities of the 5-HT2C receptor are associated with psychiatric diseases such as depression, schizophrenia, drug abuse, and anxiety. Up to date, three kinds of 5-HT2C PET radiotracers such as [11C]N-methylated arylazepine (1), [11C]WAY-163909 (2), [18F]fluorophenylcyclopropane (3) have been developed, but they may not be suitable for in vivo 5-HT2C imaging study due to their modest specific binding...
February 14, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28188762/effects-of-the-5-ht6-receptor-antagonist-idalopirdine-on-extracellular-levels-of-monoamines-glutamate-and-acetylcholine-in-the-rat-medial-prefrontal-cortex
#5
Arne Mørk, Rasmus Vinther Russell, Inge E M de Jong, Gennady Smagin
Idalopirdine (Lu AE58054) is a high affinity and selective antagonist for the human serotonin 5-HT6 receptor (Ki 0.83nM) in phase III development for mild-to-moderate Alzheimer's disease as an adjunct therapy to acetylcholinesterase inhibitors (AChEIs). We have studied the effects of idalopirdine on extracellular levels of monoamines, glutamate and acetylcholine in the medial prefrontal cortex (mPFC) of freely-moving rats using microdialysis. Idalopirdine (10mg/kg p.o.) increased extracellular levels of dopamine, noradrenaline and glutamate in the mPFC and showed a trend to increase serotonin levels...
February 7, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28188355/repeated-mdma-administration-increases-mdma-produced-locomotor-activity-and-facilitates-the-acquisition-of-mdma-self-administration-role-of-dopamine-d2-receptor-mechanisms
#6
Ross van de Wetering, Susan Schenk
RATIONALE: Repeated exposure to ±3, 4-methylenedioxymethamphetamine (MDMA) produces sensitization to MDMA-produced hyperactivity, but the mechanisms underlying the development of this sensitized response or the relationship to the reinforcing effects of MDMA is unknown. OBJECTIVES: This study determined the effect of a sensitizing regimen of MDMA exposure on the acquisition of MDMA self-administration and investigated the role of dopamine D2 receptor mechanisms...
February 10, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28185872/neuronal-and-molecular-effects-of-cannabidiol-on-the-mesolimbic-dopamine-system-implications-for-novel-schizophrenia-treatments
#7
REVIEW
Justine Renard, Christopher Norris, Walter Rushlow, Steven R Laviolette
Growing clinical and pre-clinical evidence points to a critical role for cannabidiol (CBD), the largest phytochemical component of cannabis, as a potential pharmacotherapy for various neuropsychiatric disorders. In contrast to delta-9-tetrahydrocannabinol (THC), which is associated with acute and neurodevelopmental pro-psychotic side-effects, CBD possesses no known psychoactive or dependence-producing properties. However, evidence has demonstrated that CBD strongly modulates the mesolimbic dopamine (DA) system and may possess promising anti-psychotic properties...
February 7, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28181484/bim-23a760-influences-key-functional-endpoints-in-pituitary-adenomas-and-normal-pituitaries-molecular-mechanisms-underlying-the-differential-response-in-adenomas
#8
Alejandro Ibáñez-Costa, Laura M López-Sánchez, Manuel D Gahete, Esther Rivero-Cortés, Mari C Vázquez-Borrego, María A Gálvez, Andrés de la Riva, Eva Venegas-Moreno, Luis Jiménez-Reina, Alberto Moreno-Carazo, Francisco J Tinahones, Silvia Maraver-Selfa, Miguel A Japón, Juan A García-Arnés, Alfonso Soto-Moreno, Susan M Webb, Rhonda D Kineman, Michael D Culler, Justo P Castaño, Raúl M Luque
Chimeric somatostatin/dopamine compounds such as BIM-23A760, an sst2/sst5/D2 receptors-agonist, have emerged as promising new approaches to treat pituitary adenomas. However, information on direct in vitro effects of BIM-23A760 in normal and tumoral pituitaries remains incomplete. The objective of this study was to analyze BIM-23A760 effects on functional parameters (Ca(2+) signaling, hormone expression/secretion, cell viability and apoptosis) in pituitary adenomas (n = 74), and to compare with the responses of normal primate and human pituitaries (n = 3-5)...
February 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28181071/neurotrophic-effect-of-asiatic-acid-a-triterpene-of-centella-asiatica-against-chronic-1-methyl-4-phenyl-1-2-3-6-tetrahydropyridine-hydrochloride-probenecid-mouse-model-of-parkinson-s-disease-the-role-of-mapk-pi3k-akt-gsk3%C3%AE-and-mtor-signalling-pathways
#9
Jagatheesan Nataraj, Thamilarasan Manivasagam, Arokiasamy Justin Thenmozhi, Musthafa Mohamed Essa
Regulation of various signalling (Ras-MAPK, PI3K and AKT) pathways by augmented activity of neurotrophic factors (NTFs) could prevent or halt the progress of dopaminergic loss in Parkinson's disease (PD). Various in vitro and in vivo experimental studies indicated anti-parkinsonic potential of asiatic acid (AA), a pentacyclic triterpene obtained from Centella asiatica. So the present study is designed to determine the neurotrophic effect of AA against 1-methyl 4-phenyl 1, 2, 3, 6-tetrahydropyridine hydrochloride/probenecid (MPTP/p) neurotoxicity in mice model of PD...
February 8, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28173961/a-screen-for-modulators-reveals-that-orexin-a-rapidly-stimulates-thyrotropin-releasing-hormone-expression-and-release-in-hypothalamic-cell-culture
#10
Antonieta Cote-Vélez, Anabel Martínez Báez, Leticia Lezama, Rosa María Uribe, Patricia Joseph-Bravo, Jean-Louis Charli
In the paraventricular nucleus of the mammalian hypothalamus, hypophysiotropic thyrotropin releasing hormone (TRH) neurons integrate metabolic information and control the activity of the thyroid axis. Additional populations of TRH neurons reside in various hypothalamic areas, with poorly defined connections and functions, albeit there is evidence that some may be related to energy balance. To establish extracellular modulators of TRH hypothalamic neurons activity, we performed a screen of neurotransmitters effects in hypothalamic cultures...
February 2, 2017: Neuropeptides
https://www.readbyqxmd.com/read/28168729/novel-uhplc-ms-ms-method-for-the-determination-of-rotigotine-in-the-plasma-of-patients-with-parkinson-s-disease
#11
Susan Mohamed, Roberto Riva, Manuela Contin
A novel ultra high pressure liquid chromatography-tandem mass spectrometry method was developed and validated for the determination of the dopamine receptor agonist rotigotine in human plasma. Following liquid-liquid extraction with tert-butyl methyl ether from 500 μL plasma, the chromatographic analysis was performed on a Gemini NX3 column using 5 mM pH 5.0 ammonium acetate/5 mM ammonium acetate in methanol as binary gradient mobile phase, at a flow rate of 0.3 mL/min. The MS/MS ion transitions were 316...
February 6, 2017: Biomedical Chromatography: BMC
https://www.readbyqxmd.com/read/28167808/how-do-individuals-cope-with-stress-behavioural-physiological-and-neuronal-differences-between-proactive-and-reactive-coping-styles-in-fish
#12
Marco A Vindas, Marnix Gorissen, Erik Höglund, Gert Flik, Valentina Tronci, Børge Damsgård, Per-Ove Thörnqvist, Tom O Nilsen, Svante Winberg, Øyvind Øverli, Lars O E Ebbesson
Despite the use of fish models to study human mental disorders and dysfunctions, knowledge of regional telencephalic responses in non-mammalian vertebrates expressing alternate stress coping styles is poor. Since perception of salient stimuli associated with stress coping in mammals is mainly under forebrain limbic control, we tested region-specific forebrain neural (i.e mRNA abundance and monoamine neurochemistry) and endocrine responses at basal and acute stress conditions for previously characterised proactive and reactive Atlantic salmon...
February 6, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28162057/pramipexole-reduces-inflammation-in-the-experimental-animal-models-of-inflammation
#13
Heibatollah Sadeghi, Mohammad Parishani, Mehdi Akbartabar Touri, Mehdi Ghavamzadeh, Mehrzad Jafari Barmak, Vahid Zarezade, Hamdollah Delaviz, Hossein Sadeghi
Pramipexole is a dopamine (DA) agonist (D2 subfamily receptors) that widely use in the treatment of Parkinson's diseases. Some epidemiological and genetic studies propose a role of inflammation in the pathophysiology of Parkinson's disease. To our knowledge, there is no study regarding the anti-inflammatory activity of pramipexol. Therefore, the aim of the study was to investigate anti-inflammatory effect of pramipexol. Anti-inflammatory effects of pramipexole were studied in three well-characterized animal models of inflammation, including carrageenan- or formalin-induced paw inflammation in rats, and 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced ear edema in mice...
February 6, 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28160035/brexpiprazole-reduces-hyperactivity-impulsivity-and-risk-preference-behavior-in-mice-with-dopamine-transporter-knockdown-a-model-of-mania
#14
Morgane Milienne-Petiot, Mark A Geyer, Jørn Arnt, Jared W Young
RATIONALE: Bipolar disorder (BD) is a unique mood disorder defined by periods of depression and mania. The defining diagnosis of BD is the presence of mania/hypomania, with symptoms including hyperactivity and risk-taking. Since current treatments do not ameliorate cognitive deficits such as risky decision-making, and impulsivity that can negatively affect a patient's quality of life, better treatments are needed. OBJECTIVES: Here, we tested whether acute treatment with brexpiprazole, a serotonin-dopamine activity modulator with partial agonist activity at D2/3 and 5-HT1A receptors, would attenuate the BD mania-relevant behaviors of the dopamine transporter (DAT) knockdown mouse model of mania...
February 3, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28154892/differential-effects-of-antipsychotic-and-propsychotic-drugs-on-prepulse-inhibition-and-locomotor-activity-in-roman-high-rha-and-low-avoidance-rla-rats
#15
Ignasi Oliveras, Ana Sánchez-González, Daniel Sampedro-Viana, Maria Antonietta Piludu, Cristóbal Río-Alamos, Osvaldo Giorgi, Maria G Corda, Susana Aznar, Javier González-Maeso, Cristina Gerbolés, Gloria Blázquez, Toni Cañete, Adolf Tobeña, Alberto Fernández-Teruel
RATIONALE: Animal models with predictive and construct validity are necessary for developing novel and efficient therapeutics for psychiatric disorders. OBJECTIVES: We have carried out a pharmacological characterization of the Roman high- (RHA-I) and low-avoidance (RLA-I) rat strains with different acutely administered propsychotic (DOI, MK-801) and antipsychotic drugs (haloperidol, clozapine), as well as apomorphine, on prepulse inhibition (PPI) of startle and locomotor activity (activity cages)...
February 2, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28142338/toxicity-assessment-of-molindone-hydrochloride-a-dopamine-d2-d5-receptor-antagonist-in-juvenile-and-adult-rats
#16
Gopala Krishna, Gopa Gopalakrishnan, Saryu Goel
Neuroleptic drug molindone hydrochloride is a dopamine D2/D5 receptor antagonist and it is in late stage development for the treatment of impulsive aggression in children and adolescents who have attention deficient/hyperactivity disorder (ADHD). This new indication for this drug would expand the target population to include younger patients, and therefore, toxicity assessments in juvenile animals were undertaken in order to determine susceptibility differences, if any, between this age group and the adult rats...
January 31, 2017: Toxicology Mechanisms and Methods
https://www.readbyqxmd.com/read/28138201/asenapine-for-the-control-of-physical-aggression-a-prospective-naturalist-pilot-study
#17
Jin Shi Amon, Sarah B Johnson, Rif S El-Mallakh
It has been previously purported that higher relative affinity to the dopamine D4 receptor compared to D2 (i.e., D4/D2 affinity ratio > 1) may underlie unique antiaggression potency. Asenapine is a newer antipsychotic that also has D4/D2 affinity ratio > 1. It has demonstrated efficacy in reducing acute agitation in a placebo-controlled study. We performed a prospective naturalistic, pilot, proof of concept study on an inpatient psychiatric unit. Among patients with aggression at time of admission (≥ 12 on Refined Aggression Questionnaire [RAQ], or ≥ 2 on Modified Overt Aggression Scale [MOAS]), asenapine treatment was associated with a significant reduction in total aggression as measured by the MOAS (-14...
January 26, 2017: Psychopharmacology Bulletin
https://www.readbyqxmd.com/read/28135884/intranasal-administration-of-dopamine-attenuates-unconditioned-fear-in-that-it-reduces-restraint-induced-ultrasound-vocalizations-and-escape-from-bright-light
#18
Teddy Talbot, Claudia Mattern, Maria Angelica de Souza Silva, Marcus Lira Brandão
BACKGROUND: Although substantial evidence suggests that dopamine (DA) enhances conditioned fear responses, few studies have examined the role of DA in unconditioned fear states. Whereas DA does not cross the blood-brain barrier, intranasally-applied dopamine reaches the brain directly via the nose-brain pathways in rodents, providing an alternative means of targeting DA receptors. Intranasal dopamine (IN-DA) has been demonstrated to bind to DA transporters and to increase extracellular DA in the striatum as well as having memory-promoting effects in rats...
January 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28132914/acquisition-and-expression-of-fat-conditioned-flavor-preferences-are-differentially-affected-by-nmda-receptor-antagonism-in-balb-c-and-swr-mice
#19
Tamar T Kraft, Donald Huang, Sam LaMagna, Deena Warshaw, Elona Natanova, Anthony Sclafani, Richard J Bodnar
Conditioned flavor preferences are elicited by fat (Intralipid) in inbred mouse strains with BALB/c and SWR mice displaying among the most robust preferences. Dopamine D1 and opioid receptor antagonism differentially reduces the acquisition (learning) and expression (maintenance) of fat-conditioned flavor preferences in these two strains. Because noncompetitive NMDA receptor antagonism with MK-801 differentially altered sugar-conditioned flavor preferences in these strains, and because NMDA receptors are involved in fat intake, the present study examined whether MK-801 differentially altered expression and acquisition of fat (Intralipid)-conditioned flavor preferences in BALB/c and SWR mice...
January 26, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28132813/the-fabric-of-meaning-and-subjective-effects-in-lsd-induced-states-depend-on-serotonin-2a-receptor-activation
#20
Katrin H Preller, Marcus Herdener, Thomas Pokorny, Amanda Planzer, Rainer Kraehenmann, Philipp Stämpfli, Matthias E Liechti, Erich Seifritz, Franz X Vollenweider
A core aspect of the human self is the attribution of personal relevance to everyday stimuli enabling us to experience our environment as meaningful [1]. However, abnormalities in the attribution of personal relevance to sensory experiences are also critical features of many psychiatric disorders [2, 3]. Despite their clinical relevance, the neurochemical and anatomical substrates enabling meaningful experiences are largely unknown. Therefore, we investigated the neuropharmacology of personal relevance processing in humans by combining fMRI and the administration of the mixed serotonin (5-HT) and dopamine receptor (R) agonist lysergic acid diethylamide (LSD), well known to alter the subjective meaning of percepts, with and without pretreatment with the 5-HT2AR antagonist ketanserin...
February 6, 2017: Current Biology: CB
keyword
keyword
44141
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"