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Pramipexole

普拉克索

Mechanism of action:

Pramipexole 是一種非麥角類多巴胺受體促效劑(non-ergot dopamine receptor agonist)。Pramipexole 主要活化多巴胺 D₃ 受體,該受體分佈於腹側紋狀體,特別是伏隔核(nucleus accumbens)。Pramipexole 也會活化紋狀體(striatum)、下視丘的 D₂ 受體。D₂/D₃ 受體為 Gi 蛋白偶聯受體,活化後會抑制腺苷酸環化酶(adenylate cyclase),使 cAMP 濃度下降,調節帕金森氏症的神經元異常放電與運動控制迴路。

​Reference(s):

1. Mierau J et al. (1995). Pramipexole binding and activation of cloned and expressed dopamine D2, D3 and D4 receptors. Eur J Pharmacol. 


2. Massano J et al. (2012). Clinical approach to Parkinson's disease: features, diagnosis, and principles of management. Cold Spring Harb Perspect Med.

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