2.下列情況所產生的拮抗作用,何者是chemical antagonism? ..-阿摩線上測驗
10F 玩到腦中風 大一上 (2022/01/22)
我找了一篇BJA期刊,有興趣可以看看 https://www.bjanaesthesia.org/article/S0007-0912(18)30061-8/fulltext Protamine is a highly positively charged peptide consisting of about 32 amino acids, and neutralises the effect of heparin through electrostatic binding between the cationic arginine groups of protamine and the anionic heparin in a 1:1 ratio. The resulting neutral protamine–heparin salt aggregates are clearly visible as white suspension and are formed within seconds. In parallel, the binding of protamine to heparin dissociates the anti-thrombin/heparin complex, leading to the recovery o... 查看完整內容 |
11F 小橘鏟屎官 大三下 (2024/06/23)
12.Heparin的抗凝血作用受到protamine的拮抗,屬於下列何種拮抗?
(A) 受體拮抗(receptor antagonism)
(B) 生理拮抗(physiologic antagonism)
(C) 化學拮抗(chemical antagonism)
(D) 酵素拮抗(enzymic antagonism)
72 Epinephrine 與histamine 的拮抗作用屬於下列何者?
(A) chemical antagonism
(B) physical antagonism
(C) receptor antagonism
(D) physiological antagonism
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