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回复 丫丫2011 的帖子
我不是医生.
在Gardasil 9(HPV疫苗)临床建议中, 没有提到HBV,替诺福韦的禁忌症.
https://beta.health.gov.au/resou ... -fact-sheet-for-gps
需不需要停2天药啊? - 请咨询医生以获取参考信息.
https://en.wikipedia.org/wiki/Tenofovir_disoproxil
Mechanism of action
Tenofovir disoproxil is a nucleotide analog reverse-transcriptase inhibitor (NtRTI).[15] It selectively inhibits viral reverse transcriptase, a crucial enzyme in retroviruses such as human immunodeficiency virus (HIV), while showing limited inhibition of human enzymes, such as DNA polymerases α, β, and mitochondrial DNA polymerase γ.[8][15] In vivo tenofovir disoproxil fumarate is converted to tenofovir, an acyclic analog of deoxyadenosine 5'-monophosphate (d-AMP). Tenofovir lacks a hydroxyl group in the position corresponding to the 3' carbon of the d-AMP, preventing the formation of the 5′ to 3′ phosphodiester linkage essential for DNA chain elongation.[15] Once incorporated into a growing DNA strand, tenofovir causes premature termination of DNA transcription, preventing viral replication.[15]
行动机制
替诺福韦地索普西是一种核苷酸类似物逆转录酶抑制剂(NtRTI)。[15] 它选择性地抑制病毒逆转录酶,逆转录酶是逆转录病毒如人类免疫缺陷病毒(HIV)中的一种关键酶,同时对人体酶的抑制作用有限,如DNA聚合酶α,β和线粒体DNA聚合酶γ。[8] [15] 体内替诺福韦地索普西富马酸盐被转化为替诺福韦,即脱氧腺苷5'-一磷酸(d-AMP)的无环类似物。 替诺福韦在对应于d-AMP的3'碳的位置缺少羟基,阻止了DNA链延伸所必需的5'至3'磷酸二酯键的形成。[15] 一旦纳入正在增长的DNA链中,替诺福韦会导致DNA转录过早终止,从而阻止病毒复制。[15] |
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