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D-苯丙胺使脑5-羟色胺的周转率增加。

Turnover rate of brain 5-hydroxytryptamine increased by D-amphetamine.

作者信息

Reid W D

出版信息

Br J Pharmacol. 1970 Nov;40(3):483-91. doi: 10.1111/j.1476-5381.1970.tb10629.x.

Abstract
  1. Administration of two doses of amphetamine HCl (5 mg/kg intraperitoneally) 45 min apart raised body temperature of rats by an average of 3.4 degrees C and increased the turnover rate of brain 5-hydroxytryptamine (5-HT) by almost one-half.2. Both effects were blocked by exposure to 4 degrees C or by pretreatment with the beta-blocker Kö 592 (1-(2-methylphenoxy)-3-isopropylamine-2-propanol), but not by the administration of the ganglionic blocker chlorisondamine combined with atropine.3. Since it has previously been shown that hyperthermia per se increases the turnover rate of brain 5-HT, and that amphetamine does not directly affect the uptake and release of 5-HT in brain slices, it is concluded that the amphetamine-induced increase in 5-HT turnover may be secondary to the rise in temperature produced by the drug.
摘要
  1. 间隔45分钟腹腔注射两剂盐酸苯丙胺(5毫克/千克)使大鼠体温平均升高3.4摄氏度,并使脑5-羟色胺(5-HT)的周转率提高近一半。

  2. 暴露于4摄氏度或用β受体阻滞剂Kö 592(1-(2-甲基苯氧基)-3-异丙胺-2-丙醇)预处理均可阻断这两种效应,但给予神经节阻滞剂氯异吲哚铵与阿托品联合使用则不能阻断。

  3. 由于先前已表明体温过高本身会增加脑5-HT的周转率,且苯丙胺不会直接影响脑切片中5-HT的摄取和释放,因此得出结论,苯丙胺诱导的5-HT周转率增加可能继发于该药物引起的体温升高。

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