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托福听力练习-科学美国人60秒:医用大麻损伤记忆力

2017-02-18 17:33:00来源：科学美国人60秒

点击查看>>科学美国人60秒音频：医用大麻损伤记忆力

　　科学美国人60秒中英文翻译：医用大麻损伤记忆力

　　科学美国人60秒英文文本

　　Medical marijuana helps treat disorders such as chronic pain, nausea and seizures.

　　Unfortunately, it can also...um...oh yeah, it can also impair memory and learning.

　　But a new study suggests we can prevent this side effect with easily available medication.

　　The problem stems from the hippocampus, the brain region responsible for memory formation.

　　So scientists exposed mice to THC, the psychoactive chemical in cannabis, and then looked at their brains.

　　They noticed that the hippocampi of the treated mice produced higher levels of an enzyme called COX-2.

　　When the researchers administered drugs that reduced levels of COX-2, the memory problems disappeared as well.

　　As did some neuron damage.

　　But protecting the brain against memory loss did not seem to stop the positive effects of marijuana.

　　The scientists used cannabis to treat a mouse model of Alzheimer's disease.

　　Whether or not they inhibited COX-2, pot appeared to be beneficial.

　　The work is in the journal Cell.

　　Drugs that block COX-2 include anti-inflammatories, such as over-the-counter painkiller ibuprofen.

　　But before you start self-medicating, you might want to wait for confirmation in people.

　　中文翻译请点击下一页

本文关键字: 托福听力练习 科学美国人60秒

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