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Colestipol

考來替泊
Mechanism of action:
Colestipol 屬於膽汁酸螯合樹脂類(bile acid sequestrant resin)。Colestipol 在腸道中不被吸收,而是可與膽汁酸(bile acids)形成不可吸收的複合物,阻止膽汁酸在迴腸被重新吸收,隨著糞便排出。結果導致膽汁酸排出量增加,肝臟內膽汁酸濃度下降。為了合成新的膽汁酸,肝細胞會增加低密度脂蛋白受體(low-density lipoprotein (LDL) receptor)的表達,加強對血液中低密度脂蛋白(LDL)的攝取與分解。最終導致血漿中的低密度脂蛋白膽固醇(LDL-C)濃度下降。
Reference(s):
1. LaRosa JC et al. (1982). The mechanism of action of lipid-lowering drugs. Angiology.
2. Farmer JA et al. (1995). Currently available hypolipidaemic drugs and future therapeutic developments. Baillieres Clin Endocrinol Metab.
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