Dopamine replacement

“Dopamine replacement” refers to clinical treatment approaches that attempt to compensate for loss of dopamine (for example, in Parkinson’s disease) by directly supplementing dopamine or stimulating dopamine signaling pathways. The actual therapeutic targets in this context are the various dopamine receptor subtypes (mainly D1-like and D2-like receptors), which mediate dopamine’s biological effects in the nervous system[1][2][6]. Interventions in “dopamine replacement” commonly use drugs such as levodopa (a dopamine precursor) and dopamine agonists, which bind to and activate these receptors. The term is not associated with a distinct molecule or protein but encompasses all approaches that seek to restore dopamine receptor signaling.