词汇 | amphetamine |
释义 | amphetamine noun[ C or U ] uk /æmˈfet.ə.miːn//æmˈfet.ə.mɪn/ us /æmˈfet̬.miːn//æmˈfet̬.mɪn/ any of several types of drug used as a stimulant (= a substance that makes the mind or body more active): 苯丙胺,安非他明 Floyd was banned from racing after a drug test revealed traces of amphetamine in his urine.弗洛伊德因兴奋剂检测显示其尿样中含有微量安非他明成分而被禁赛。 Synonym speed Compare pep pill uppernoun Specific types of drug acaricide alprazolam amnesiac anaphrodisiac anti-AIDS Dexedrine digoxin dissociative E, e ecstasy gas and air heroin LSD pep pill popper roach smack tetrahydrocannabinol truth serum Xanax amphetamine | American Dictionaryamphetamine noun[ C ] us/æmˈfet̬·əˌmin, -mɪn/ a strong drug used as a medicine that makes the mind and body more active; a stimulant Examples of amphetamineamphetamine Persistent structural modifications in nucleus accumbens and prefrontal cortex neurons produced by previous experience with amphetamine. It was found that they had similar rates of offending but the amphetamine users' weekly expenditure on drugs was much lower. Amphetamine-induced hyperactivity is the most established rodent model for mania; this hyperactivity is attenuated by a number of mood stabilizers including lithium, anticonvulsants, and antipsychotics. There is considerable overlap in the mechanisms of action of methylphenidate and amphetamines, but there is a significant difference. Amphetamine-associated hallucinations are phenomenologically like those in schizophrenia. The amphetamine model psychosis provides the "look and feel" of paranoid schizophrenia and nests nicely with the dopamine hypothesis of schizophrenia. Each animal received only one drug, except those who received amphetamine followed by haloperidol. A significant subset are helped by amphetamines rather than methylphenidate. Although both methylphenidate and amphetamines inhibit reuptake of dopamine and norepinephrine, only amphetamines also promote release of those neurotransmitters. Hallucinations and loss of insight, associated with amphetamine, seem more schizophrenia-like. Orthostatic hypotension may be related to amphetamine-like metabolites. Evidence that amphetamine with physical therapy promotes recovery of motor function in stroke patients. A role of forebrain dopamine systems in amphetamine-induced and stereotyped behavior in the rat. The loss of insight and other behavioral effects with amphetamine can be very impressive. Fewer amphetamine metabolites are generated and theoretically this could have advantages in some patients. See all examples of amphetamine These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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