作者lewdster0128 (熊)
站内CMU_M49
标题[共笔] 药理14勘误
时间Mon Nov 9 18:56:28 2009
P13
框框内的Ethanol改成Methanol
小标题的Formepizole改成Fomepizole
p14
普拿疼在肝中代谢"需要"GSH的帮助
P19 第一行
基因通过细胞"膜"是基因治疗的速率决定步骤
Q:有人问到喝到甲醇对人体造成伤害的到底是甲醛还是甲酸?
A:
Methanol is toxic by two mechanisms. Firstly, methanol (whether it enters the
body by ingestion, inhalation, or absorption through the skin) can be fatal
due to its CNS depressant properties in the same manner as ethanol poisoning.
Secondly, in a process of toxication, it is metabolised to formic acid (which
is present as the formate ion) via formaldehyde in a process initiated by the
enzyme alcohol dehydrogenase in the liver. The reaction to formate
proceeds completely, with no detectable formaldehyde remaining. Formate is
toxic because it inhibits mitochondrial cytochrome c oxidase, causing the
symptoms of hypoxia at the cellular level, and also causing metabolic
acidosis among a variety of other metabolic disturbances. Fetal tissue
will not tolerate methanol.
所以是甲"酸",他会抑制细胞色素C氧化酶,造成细胞缺氧的症状,也会造成acidosis。
补充:
甲醇中毒的话补充叶酸可以促进甲酸的排泄!
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祝大家药理考试顺利~!
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◆ From: 114.46.116.10
1F:推 Richard77523:你要留联络方式和基本资料啊!... 11/09 20:11
2F:推 sinrong:感谢 真˙神庸 11/09 20:15
3F:推 twbestman:那造成视力受损的是甲醛还是甲酸呢? 11/10 06:44
4F:→ lewdster0128:你觉得勒~? 11/10 09:27
5F:推 cidking:甲醛吧 化学活性比较大 11/10 14:57
6F:→ lewdster0128:那我选甲酸好了~XD 11/10 19:33
7F:推 cidking:还真的是耶 XD 11/10 20:02