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Numerous clinical trials have been performed to assess the use of dopamine agonists for the treatment of restless legs syndrome (RLS). RLS is identified by the strong urge to move and is a dopamine-dependent disorder. RLS symptoms decrease with the use of drugs that stimulate dopamine receptors and increase dopamine levels, such as dopamine ...
Dopamine receptors are a class of G protein-coupled receptors that are prominent in the vertebrate central nervous system (CNS) and are implicated in many neurological processes, including motivational and incentive salience, cognition, memory, learning, and fine motor control, as well as modulation of neuroendocrine signaling.
[4] [19] [13] [12] Dopamine releasing agents like dextroamphetamine are able to rapidly increase striatal dopamine levels by 700 to 1,500% of baseline in rodents. [62] These drugs show greater magnitudes of impact on dopamine levels than do dopamine reuptake inhibitors like methylphenidate.
The primary endogenous agonists of the sympathetic nervous system are the catecholamines (i.e., epinephrine [adrenaline], norepinephrine [noradrenaline], and dopamine), which function as both neurotransmitters and hormones. Sympathomimetic drugs are used to treat cardiac arrest and low blood pressure, or even delay premature labor, among other ...
In terms of maximal brain dopamine elevations, typical DRIs or DAT "inverse agonists" can increase levels by 500 to 1,500%, substrate-type DRAs by more than 1,000% (as high as 5,000% or more), and atypical DRIs or competitive reuptake inhibitors by less than or equal to 500%. [11] [13]
The dopamine hypothesis of schizophrenia or the dopamine hypothesis of psychosis is a model that attributes the positive symptoms of schizophrenia to a disturbed and hyperactive dopaminergic signal transduction. The model draws evidence from the observation that a large number of antipsychotics have dopamine-receptor antagonistic effects. The ...
Non-selective dopamine receptor agonists include dopamine, deoxyepinephrine (epinine), dinoxyline, and dopexamine. They are mostly peripherally selective drugs , are often also adrenergic receptor agonists , and are used to treat certain cardiovascular conditions .
Dopamine receptor D 2, also known as D 2 R, is a protein that, in humans, is encoded by the DRD2 gene.After work from Paul Greengard's lab had suggested that dopamine receptors were the site of action of antipsychotic drugs, several groups, including those of Solomon H. Snyder and Philip Seeman used a radiolabeled antipsychotic drug to identify what is now known as the dopamine D 2 receptor. [5]