Dopamine receptor agonist

Dopamine Receptor agonist
Drug class
Class identifiers
Use	Parkinson's disease, Attention deficit/hyperactivity disorder(ADHD), restless legs syndrome, clinical depression, etc.
ATC code	N04
Biological target	Dopamine receptors
External links
MeSH	D010300

A dopamine receptor agonist is a compound that activates dopamine receptors. Dopamine receptor agonists activate signaling pathways through trimeric G-proteins and β-arrestins, ultimately leading to changes in gene transcription.

Today, for several dopamine receptor subtypes (D1, D2, D3) agonists are known, that differentially address these signalling pathways. They are called biased agonists.

Some medical drugs act as dopamine agonists and can treat hypodopaminergic (low dopamine) conditions; they are typically used for treating Parkinson's disease, attention deficit/hyperactivity disorder (in the form of stimulants) and certain pituitary tumors (prolactinoma), and may be useful for restless legs syndrome (RLS). Both ropinirole and pramipexole are FDA-approved for the treatment of RLS. There is also an ongoing clinical trial to test the effectiveness of the dopamine agonist ropinirole in reversing the symptoms of SSRI-induced sexual dysfunction. Additionally, a systematic review and meta-analysis concluded that prophylactic treatment with cabergoline reduces the incidence, but not the severity, of ovarian hyperstimulation syndrome (OHSS), without compromising pregnancy outcomes, in females undergoing stimulated cycles of in vitro fertilization (IVF).

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