Results 21 to 30 of about 807,462 (376)

Aversive Stimuli Drive Drug Seeking in a State of Low Dopamine Tone [PDF]

open access: yes, 2015
Background Stressors negatively impact emotional state and drive drug seeking, in part, by modulating the activity of the mesolimbic dopamine system.
Ebben, Amanda L.   +6 more
core   +2 more sources

Opposite initialization to novel cues in dopamine signaling in ventral and posterior striatum in mice

open access: yeseLife, 2017
Dopamine neurons are thought to encode novelty in addition to reward prediction error (the discrepancy between actual and predicted values). In this study, we compared dopamine activity across the striatum using fiber fluorometry in mice.
William Menegas   +3 more
doaj   +1 more source

Effects of dopamine D2 receptor partial agonist antipsychotic aripiprazole on dopamine synthesis in human brain measured by PET with L-[β-11C]DOPA. [PDF]

open access: yesPLoS ONE, 2012
Dopamine D(2) receptor partial agonist antipsychotic drugs can modulate dopaminergic neurotransmission as functional agonists or functional antagonists.
Hiroshi Ito   +8 more
doaj   +1 more source

Loss of angiotensin II receptor expression in dopamine neurons in Parkinson’s disease correlates with pathological progression and is accompanied by increases in Nox4- and 8-OH guanosine-related nucleic acid oxidation and caspase-3 activation [PDF]

open access: yes, 2015
In rodent models of Parkinsons disease (PD), dopamine neuron loss is accompanied by increased expression of angiotensin II (AngII), its type 1 receptor (AT1), and NADPH oxidase (Nox) in the nigral dopamine neurons and microglia.
Aboud, O   +6 more
core   +2 more sources

Synaptotagmin-1 is the Ca2+ sensor for fast striatal dopamine release

open access: yeseLife, 2020
Dopamine powerfully controls neural circuits through neuromodulation. In the vertebrate striatum, dopamine adjusts cellular functions to regulate behaviors across broad time scales, but how the dopamine secretory system is built to support fast and slow ...
Aditi Banerjee   +4 more
doaj   +1 more source

Dopamine in oliguria [PDF]

open access: yesBMJ, 1997
Renal failure often manifests as oliguria. Many therefore view oliguria as a sinister development that should be prevented or treated in the hope of avoiding renal failure. However, oliguria can be a normal physiological response and, in itself, is a poor predictor of acute renal failure.1 2 Nevertheless, dopamine infusions have gained popularity over ...
David W Noble, Brian H Cuthbertson
openaire   +3 more sources

M₅ muscarinic receptors mediate striatal dopamine activation by ventral tegmental morphine and pedunculopontine stimulation in mice. [PDF]

open access: yesPLoS ONE, 2011
Opiates, like other addictive drugs, elevate forebrain dopamine levels and are thought to do so mainly by inhibiting GABA neurons near the ventral tegmental area (VTA), in turn leading to a disinhibition of dopamine neurons.
Stephan Steidl   +3 more
doaj   +1 more source

Cholinergic modulation of dopamine overflow in the rat neostriatum: A fast cyclic voltammetric study in vitro [PDF]

open access: yes, 1994
Stimulus-evoked dopamine overflow in rat neostriatal slices was determined using fast cyclic voltammetry. The dopamine efflux induced by intrastriatal stimulation increased with stimulus intensity and was found to be enhanced by more than 100% upon ...
Kudernatsch, Martina, Sutor, Bernd
core   +1 more source

Dissociable dopamine dynamics for learning and motivation.

open access: yesNature, 2019
The dopamine projection from ventral tegmental area (VTA) to nucleus accumbens (NAc) is critical for motivation to work for rewards and reward-driven learning. How dopamine supports both functions is unclear.
Ali Mohebi   +8 more
semanticscholar   +1 more source

Could dopamine agonists aid in drug development for anorexia nervosa? [PDF]

open access: yes, 2014
Anorexia nervosa is a severe psychiatric disorder most commonly starting during the teenage-years and associated with food refusal and low body weight. Typically there is a loss of menses, intense fear of gaining weight, and an often delusional quality ...
Frank, Guido KW
core   +2 more sources

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