問題詳情

71.下列有關抗病毒藥didanosine的敘述,何者錯誤?
(A)代謝後會產生尿酸
(B)屬於前驅藥
(C)是HIV反轉錄酶抑制劑
(D)結構屬於adenine dideoxynucleoside

參考答案

答案:D
難度:適中0.536758
統計:A(155),B(155),C(213),D(606),E(0)

用户評論

蘇莉琄】評論

didanosine   inosine衍生物

pretest】評論

2′,3′-dideoxyinosineDidanosine (ddI) is a nucleoside analogue of adenosine.[7] It differs from other nucleoside analogues, because it does not have any of the regular bases, instead it has hypoxanthine attached to the sugar ring. Within the cell, ddI is phosphorylated to the active metabolite of dideoxyadenosine triphosphate, ddATP, by cellular enzymes. Like other anti-HIV nucleoside analogs, it acts as a chain terminator by incorporation and inhibits viral reverse transcriptase by competing with natural dATP...

鳳山下智久】評論

A選項76 下列抗病毒藥物中,何者會被代謝產生尿酸(uric acid)?(A) lamivudine(B) stavudine(C) zalcitabine(D) didanosine藥物化學- 98 年 - 098-1-藥師-藥理學與藥物化學#10033答案:D

洪峻澤】評論

ddI->ddATP->...

所得皆所愿】評論

Didanosine(ddI):NRTIs核酸衍生物:Inosine> 機轉:於宿主細胞內轉化為ddATP,繼而插入DNA鏈中,造成DNA鏈的增長中止> 耐酸;可以口嚼錠、緩衝錠、緩衝溶液投與> 代謝後產生尿酸(通風患者注意)> 副作用:胰臟炎、周邊神經毒性(劑量限制)