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Baclofen

巴氯芬

Mechanism of action:

Baclofen 是一種中樞性骨骼肌鬆弛劑(centrally acting skeletal muscle relaxant),屬於 GABA 的 B 型受體選擇性促效劑,作用於中樞神經系統。當 baclofen 活化 GABA_B 受體後,會促使鉀離子(K⁺)流出神經元,引起膜電位超極化(hyperpolarization),從而抑制運動神經元的放電活動。此外也抑制鈣離子(Ca²⁺)進入神經元,降低神經元釋放興奮性神經傳導物質(如 glutamate、aspartate),減少對下一個神經元的興奮性輸入。

​Reference(s):

1. Brennan JL et al. (2013). Clinical effectiveness of baclofen for the treatment of alcohol dependence: a review. Clin Pharmacol. 


2. Liu J et al. (2017). Baclofen for alcohol withdrawal. Cochrane Database Syst Rev. 


3. Chen K et al. (2005). Role of GABAB receptors in GABA and baclofen-induced inhibition of adult rat cerebellar interpositus nucleus neurons in vitro. Brain Res Bull.

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