keyword
MENU ▼
Read by QxMD icon Read
search

Dopamine and effort

keyword
https://www.readbyqxmd.com/read/29468191/a-neural-circuit-mechanism-for-the-involvements-of-dopamine-in-effort-related-choices-decay-of-learned-values-secondary-effects-of-depletion-and-calculation-of-temporal-difference-error
#1
Kenji Morita, Ayaka Kato
Dopamine has been suggested to be crucially involved in effort-related choices. Key findings are that dopamine depletion (i) changed preference for a high-cost, large-reward option to a low-cost, small-reward option, (ii) but not when the large-reward option was also low-cost or the small-reward option gave no reward, (iii) while increasing the latency in all the cases but only transiently, and (iv) that antagonism of either dopamine D1 or D2 receptors also specifically impaired selection of the high-cost, large-reward option...
January 2018: ENeuro
https://www.readbyqxmd.com/read/29465221/polydopamine-surface-chemistry-a-decade-of-discovery
#2
Ji Hyun Ryu, Phillip B Messersmith, Haeshin Lee
Polydopamine is one of the simplest and most versatile approaches to functionalizing material surfaces, having been inspired by the adhesive nature of catechols and amines in mussel adhesive proteins. Since its first report in 2007, a decade of studies on polydopamine molecular structure, deposition conditions, and physicochemical properties have ensued. During this time, potential uses of polydopamine coatings have expanded in many unforeseen directions, seemingly only limited by the creativity of researchers seeking simple solutions to manipulating surface chemistry...
February 21, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29459796/genetic-inhibition-of-neurotransmission-reveals-role-of-glutamatergic-input-to-dopamine-neurons-in-high-effort-behavior
#3
M A Hutchison, X Gu, M F Adrover, M R Lee, T S Hnasko, V A Alvarez, W Lu
This corrects the article DOI: 10.1038/mp.2017.7.
February 20, 2018: Molecular Psychiatry
https://www.readbyqxmd.com/read/29454494/historical-perspectives-on-tardive-dyskinesia
#4
REVIEW
Stanley N Caroff, Gabor S Ungvari, David G Cunningham Owens
Tardive dyskinesia (TD) is a persistent hyperkinetic movement disorder associated with dopamine receptor blocking agents including antipsychotic medications. Although uncertainty and concern about this drug side effect has vacillated since its initial recognition 60 years ago, recent commercial interest in developing effective treatments has rekindled scientific and clinical interest after a protracted period of neglect. Although substantial research has advanced knowledge of the clinical features and epidemiology of TD, many fundamental questions raised by early investigators remain unresolved...
February 3, 2018: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/29433809/future-directions-in-tardive-dyskinesia-research
#5
REVIEW
Jonathan M Meyer
Tardive dyskinesia (TD) research is at a crossroads because of renewed interest in this syndrome following the successful development and regulatory approval of two novel vesicular monoamine transport 2 (VMAT2) inhibitors. Despite these clinical advances, significant lacunae exist in the knowledge base of TD pathophysiology, prognosis, and epidemiology. Moreover, conflicting definitions of TD as either a syndrome that encompasses a broad array of related phenomena or as a specific subset of tardive syndromes are an impediment to both clinical and basic science research, and to educational efforts targeting nonspecialist clinicians...
February 5, 2018: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/29427284/a-single-high-dose-of-methamphetamine-reduces-monoamines-and-impairs-egocentric-and-allocentric-learning-and-memory-in-adult-male-rats
#6
Arnold Gutierrez, Michael T Williams, Charles V Vorhees
Methamphetamine (MA) alters dopamine markers and cognitive function in heavy users. In rodents, there are MA dosing regimens that induce concordant effects using repeated administration at spaced intervals. These regimens are effective but complicate experiments designed to disentangle the effects of the drug on different brain regions in relation to their cognitive effects because of treatment spacing. In an effort to simplify the model, we tested whether a single dose of MA could induce the same monoamine and cognitive effects as multiple, spaced dosing without affecting survival...
February 9, 2018: Neurotoxicity Research
https://www.readbyqxmd.com/read/29408363/dopamine-depletion-shifts-behavior-from-activity-based-reinforcers-to-more-sedentary-ones-and-adenosine-receptor-antagonism-reverses-that-shift-relation-to-ventral-striatum-darpp32-phosphorylation-patterns
#7
Laura López-Cruz, Noemí San Miguel, Carla Carratalá-Ros, Lidón Monferrer, John D Salamone, Mercè Correa
The mesolimbic dopamine (DA) system plays a critical role in behavioral activation and effort-based decision-making. DA depletion produces anergia (shifts to low effort options) in animals tested on effort-based decision-making tasks. Caffeine, the most consumed stimulant in the world, acts as an adenosine A1/A2A receptor antagonist, and in striatal areas DA D1 and D2 receptors are co-localized with adenosine A1 and A2A receptors respectively. In the present work, we evaluated the effect of caffeine on anergia induced by the VMAT-2 inhibitor tetrabenazine (TBZ), which depletes DA...
February 2, 2018: Neuropharmacology
https://www.readbyqxmd.com/read/29407514/prenatal-stress-and-genetic-risk-how-prenatal-stress-interacts-with-genetics-to-alter-risk-for-psychiatric-illness
#8
REVIEW
Parker W Abbott, Serena B Gumusoglu, Jada Bittle, David Q Beversdorf, Hanna E Stevens
Risk for neuropsychiatric disorders is complex and includes an individual's internal genetic endowment and their environmental experiences and exposures. Embryonic development captures a particularly complex period, in which genetic and environmental factors can interact to contribute to risk. These environmental factors are incorporated differently into the embryonic brain than postnatal one. Here, we comprehensively review the human and animal model literature for studies that assess the interaction between genetic risks and one particular environmental exposure with strong and complex associations with neuropsychiatric outcomes-prenatal maternal stress...
January 30, 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29394048/isoindole-linkages-provide-a-pathway-for-dopal-mediated-crosslinking-of-%C3%AE-synuclein
#9
Jonathan W Werner-Allen, Sarah Monti, Jenna F DuMond, Rodney L Levine, Ad Bax
3,4-dihydroxyphenylacetaldehyde (DOPAL) is a toxic and reactive product of dopamine catabolism. In the catecholaldehyde hypothesis for Parkinson's disease, it is a critical driver of the selective loss of dopaminergic neurons that characterizes the disease. DOPAL also crosslinks α-synuclein, the main component of Lewy bodies, which are a pathological hallmark of the disease. We previously described the initial adduct formed in reactions between DOPAL and α-synuclein, a dicatechol pyrrole lysine (DCPL). Here, we examine the chemical basis for DOPAL-based crosslinking...
February 2, 2018: Biochemistry
https://www.readbyqxmd.com/read/29379873/a-common-function-of-basal-ganglia-cortical-circuits-subserving-speed-in-both-motor-and-cognitive-domains
#10
Takashi Hanakawa, Andrew M Goldfine, Mark Hallett
Distinct regions of the frontal cortex connect with their basal ganglia and thalamic counterparts, constituting largely segregated basal ganglia-thalamo-cortical (BTC) circuits. However, any common role of the BTC circuits in different behavioral domains remains unclear. Indeed, whether dysfunctional motor and cognitive BTC circuits are responsible for motor slowing and cognitive slowing, respectively, in Parkinson's disease (PD) is a matter of debate. Here, we used an effortful behavioral paradigm in which the effects of task rate on accuracy were tested in movement, imagery, and calculation tasks in humans...
November 2017: ENeuro
https://www.readbyqxmd.com/read/29367407/an-interaction-between-serotonin-receptor-signaling-and-dopamine-enhances-goal-directed-vigor-and-persistence-in-mice
#11
Matthew R Bailey, Olivia Goldman, Estefanía P Bello, Muhammad O Chohan, Nuri Jeong, Vanessa Winiger, Eileen Chun, Elke Schipani, Abigail Kalmbach, Joseph F Cheer, Peter D Balsam, Eleanor H Simpson
The functionally selective 5HT-2C receptor ligand SB242084 can increase motivation and have rapid onset anti-depressant like effects. We sought to identify the specific behavioural effects of SB242084 treatment and elucidate the mechanism in female and male mice. Using a quantitative behavioural approach we determined that SB242084 increases the vigor and persistence of goal-directed activity across different types of physical work, particularly when work requirements are demanding. We found this influence of SB242084 on effort, rather than reward to be reflected in striatal dopamine measured during behavior...
January 24, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29367062/a-facile-route-for-the-syntheses-of-ni-oh-2-and-nio-nanostructures-as-potential-candidates-for-non-enzymatic-glucose-sensor
#12
Nabanita Pal, Sangam Banerjee, Asim Bhaumik
In modern world, diabetes is one of the most leading diseases that cause human death and disability. Continuous effort to control and manage diabetes by acute monitoring of the blood glucose concentration requires the development of an efficient and reliable glucose sensing device. Although both enzymatic and enzyme-free methods of glucose detection are available in the market, non-enzymatic biosensors are more significant due to certain drawbacks in enzyme based sensors. In this article, a stable non-enzymatic sensing platform for d-glucose based on nickel hydroxide and nickel oxide nanomaterials has been described...
January 9, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29362511/neuropsychiatric-phenotypes-produced-by-gaba-reduction-in-mouse-cortex-and-hippocampus
#13
Stefan M Kolata, Kazuhito Nakao, Vivek Jeevakumar, Emily L Farmer-Alroth, Yuko Fujita, Aundrea F Bartley, Sunny Zhihong Jiang, Gregory R Rompala, Robert E Sorge, Dennisse V Jimenez, Keri Martinowich, Yolanda Mateo, Kenji Hashimoto, Lynn E Dobrunz, Kazu Nakazawa
Whereas cortical GAD67 reduction and subsequent GABA level decrease are consistently observed in schizophrenia and depression, it remains unclear how these GABAergic abnormalities contribute to specific symptoms. We modeled cortical GAD67 reduction in mice, in which the Gad1 gene is genetically ablated from ~50% of cortical and hippocampal interneurons. Mutant mice showed a reduction of tissue GABA in the hippocampus and cortex including mPFC, and exhibited a cluster of effort-based behavior deficits including decreased home-cage wheel running and increased immobility in both tail suspension and forced swim tests...
December 6, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29352161/the-action-of-a-negative-allosteric-modulator-at-the-dopamine-d2-receptor-is-dependent-upon-sodium-ions
#14
Christopher J Draper-Joyce, Ravi Kumar Verma, Mayako Michino, Jeremy Shonberg, Anitha Kopinathan, Carmen Klein Herenbrink, Peter J Scammells, Ben Capuano, Ara M Abramyan, David M Thal, Jonathan A Javitch, Arthur Christopoulos, Lei Shi, J Robert Lane
Sodium ions (Na+) allosterically modulate the binding of orthosteric agonists and antagonists to many class A G protein-coupled receptors, including the dopamine D2 receptor (D2R). Experimental and computational evidences have revealed that this effect is mediated by the binding of Na+ to a conserved site located beneath the orthosteric binding site (OBS). SB269652 acts as a negative allosteric modulator (NAM) of the D2R that adopts an extended bitopic pose, in which the tetrahydroisoquinoline moiety interacts with the OBS and the indole-2-carboxamide moiety occupies a secondary binding pocket (SBP)...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29343833/dopamine-d3-receptor-antagonist-reveals-a-cryptic-pocket-in-aminergic-gpcrs
#15
Noelia Ferruz, Stefan Doerr, Michelle A Vanase-Frawley, Yaozhong Zou, Xiaomin Chen, Eric S Marr, Robin T Nelson, Bethany L Kormos, Travis T Wager, Xinjun Hou, Anabella Villalobos, Simone Sciabola, Gianni De Fabritiis
The recent increase in the number of X-ray crystal structures of G-protein coupled receptors (GPCRs) has been enabling for structure-based drug design (SBDD) efforts. These structures have revealed that GPCRs are highly dynamic macromolecules whose function is dependent on their intrinsic flexibility. Unfortunately, the use of static structures to understand ligand binding can potentially be misleading, especially in systems with an inherently high degree of conformational flexibility. Here, we show that docking a set of dopamine D3 receptor compounds into the existing eticlopride-bound dopamine D3 receptor (D3R) X-ray crystal structure resulted in poses that were not consistent with results obtained from site-directed mutagenesis experiments...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29289701/dopamine-transporter-knockdown-mice-in-the-behavioral-pattern-monitor-a-robust-reproducible-model-for-mania-relevant-behaviors
#16
Molly A Kwiatkowski, Gerhard Hellemann, Catherine A Sugar, Zackary A Cope, Arpi Minassian, William Perry, Mark A Geyer, Jared W Young
Efforts to replicate results from both basic and clinical models have highlighted problems with reproducibility in science. In psychiatry, reproducibility issues are compounded because the complex behavioral syndromes make many disorders challenging to model. We develop translatable tasks that quantitatively measure psychiatry-relevant behaviors across species. The behavioral pattern monitor (BPM) was designed to analyze exploratory behaviors, which are altered in patients with bipolar disorder (BD), especially during mania episodes...
December 28, 2017: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/29248527/inhibiting-mesolimbic-dopamine-neurons-reduces-the-initiation-and-maintenance-of-instrumental-responding
#17
Sarah Fischbach-Weiss, Rebecca M Reese, Patricia H Janak
Mesolimbic dopamine perturbations modulate performance of reward-seeking behavior, with tasks requiring high effort being especially vulnerable to disruption of dopamine signaling. Previous work primarily investigated longer-term perturbations such as receptor antagonism and dopamine depletion, which constrain the ability to assess dopamine contributions to effort expenditure in isolation from other behavior events, such as reward consumption. Also unclear is if dopamine is required for both initiation and maintenance when a sequence of multiple instrumental responses is required...
December 14, 2017: Neuroscience
https://www.readbyqxmd.com/read/29246856/the-behavioral-pharmacology-and-therapeutic-potential-of-lorcaserin-for-substance-use-disorders
#18
REVIEW
Gregory T Collins, Lisa R Gerak, Charles P France
Substance abuse is serious public health problem for which there are few effective pharmacotherapies. Traditional strategies for drug development have focused on antagonists to block the abuse-related effects of a drug at its site of action, and agonists to replace/mimic the effects of the abused substance. However, recent efforts have targeted receptors, such as serotonin (5-HT)2 receptors, that can indirectly modulate dopamine neurotransmission with the goal of developing a pharmacotherapy that might be effective at reducing the abuse-related effects of drugs more generally...
December 12, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/29218782/therapy-development-in-huntington-disease-from-current-strategies-to-emerging-opportunities
#19
REVIEW
Audrey S Dickey, Albert R La Spada
Huntington disease (HD) is a progressive autosomal dominant neurodegenerative disorder in which patients typically present with uncontrolled involuntary movements and subsequent cognitive decline. In 1993, a CAG trinucleotide repeat expansion in the coding region of the huntingtin (HTT) gene was identified as the cause of this disorder. This extended CAG repeat results in production of HTT protein with an expanded polyglutamine tract, leading to pathogenic HTT protein conformers that are resistant to protein turnover, culminating in cellular toxicity and neurodegeneration...
December 8, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/29194534/why-not-try-harder-computational-approach-to-motivation-deficits-in-neuro-psychiatric-diseases
#20
Mathias Pessiglione, Fabien Vinckier, Sébastien Bouret, Jean Daunizeau, Raphaël Le Bouc
Motivation deficits, such as apathy, are pervasive in both neurological and psychiatric diseases. Even when they are not the core symptom, they reduce quality of life, compromise functional outcome and increase the burden for caregivers. They are currently assessed with clinical scales that do not give any mechanistic insight susceptible to guide therapeutic intervention. Here, we present another approach that consists of phenotyping the behaviour of patients in motivation tests, using computational models...
November 29, 2017: Brain: a Journal of Neurology
keyword
keyword
94958
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"