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It is unclear if dopamine is safe to use during pregnancy or breastfeeding. [4] At low doses dopamine mainly triggers dopamine receptors and β1-adrenergic receptors while at high doses it works via α-adrenergic receptors. [4] Dopamine was first synthesized in a laboratory in 1910 by George Barger and James Ewens in England. [8]
A single 15 mg dose of mirtazapine to healthy volunteers has been found to result in over 80% occupancy of the H 1 receptor and to induce intense sleepiness. [92] After a short period of chronic treatment, however, the H 1 receptor tends to sensitize and the antihistamine effects become more tolerable.
A dopamine reuptake inhibitor (DRI) is a class of drug which acts as a reuptake inhibitor of the monoamine neurotransmitter dopamine by blocking the action of the dopamine transporter (DAT). Reuptake inhibition is achieved when extracellular dopamine not absorbed by the postsynaptic neuron is blocked from re-entering the presynaptic neuron.
[citation needed] Although cabergoline is commonly described principally as a D 2 receptor agonist, it also possesses significant affinity for the dopamine D 3, and D 4, serotonin 5-HT 1A, 5-HT 2A, 5-HT 2B, and 5-HT 2C, and α 2-adrenergic receptors, as well as moderate/low affinity for the dopamine D 1, serotonin 5-HT 7, and α 1-adrenergic ...
[36] [171] However, a significant incidence of seizures at the originally recommended dosage (400–600 mg/day) caused the withdrawal of the drug in 1986. Subsequently, the risk of seizures was found to be highly dose-dependent, and bupropion was re-introduced to the market in 1989 with a lower maximum recommended daily dose of 450 mg/day.
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Amisulpride is approved and used at low doses in the treatment of dysthymia and major depressive disorder. [10] [20] [11] [21] [22] [23] Whereas typical doses used in schizophrenia block postsynaptic dopamine D 2-like receptors and reduce dopaminergic neurotransmission, low doses of amisulpride preferentially block presynaptic dopamine D 2 and D 3 autoreceptors and thereby disinhibit dopamine ...
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