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60. Vhich of the following descriptions about eicosanoids is NOT correct?
(A) Eicosanoids are named because they are derived from 20﹣carbon fatty acids such as arachidonate.
(B) Many eicosanoids are local hormones and have signaling activities.
(C) Prostaglandins, thromboxanes, and leukotrienes are some subfamilies of eicosanoids.
(D) Acetaminophen is a nonsteroidal anti-inflammatory drug that blocks the interaction of eicosanoids and their receptors.
(E) Aspirin exerts its anti-inflammatory effects by acetylation ofcyclooxygenase (COX), an enzyme responsible for prostaglandin synthesis.


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Celeste 小六上 (2024/09/15)

(A)對,花生四烯 酸是一種20碳的多不飽和脂肪酸,是許多類花 生酸的前體。Eicosanoids是從 arachidonic acid(花生四烯酸)演變而來的。

 當細胞受到刺激 時,花生四烯酸會被釋放並轉化為各種eicosanoids,包 括前列腺素(Prostaglandins)、血栓素 (Thromboxanes)和白三烯(Leukotrienes)。這些eicosanoids在調節炎 症、血液凝固、血管擴張和免疫反應中起著關鍵 作用。  
  


(B) 許多eicosanoid是局部激素,具有信號傳導活性。 對。
  Eicosanoid是一類重要的局部激素,主要由細胞膜中的花生四烯酸代謝而來,具有顯著的信號傳導活性。這些分子包括前列腺素、血栓素、白細胞三烯和脂氧素等,能迅速調節多種生理過程。   Eicos...
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60. Vhich of the following descriptions ..-阿摩線上測驗