RAPID SENSITIZATION TO THE CARDIOVASCULAR EFFECTS OF COCAINE IN RATS

被引:21
|
作者
TELLA, SR
SCHINDLER, CW
GOLDBERG, SR
机构
[1] GEORGETOWN UNIV,SCH MED,DEPT PHARMACOL,WASHINGTON,DC 20007
[2] UNIV MARYLAND,DEPT PHARMACOL & EXPTL THERAPEUT,BALTIMORE,MD 21201
关键词
COCAINE; BLOOD PRESSURE; HEART RATE; SENSITIZATION; CARDIOVASCULAR TOXICITY; (RAT);
D O I
10.1016/0014-2999(91)90133-B
中图分类号
R9 [药学];
学科分类号
1007 ;
摘要
Effects of repeated daily administrations of cocaine on blood pressure and heart rate were studied in conscious rats. Cocaine (0.03-3.0 mg/kg i.v.) increased blood pressure and heart rate the first time it was administered (day 1) However, the magnitude and duration of the increases in blood pressure caused by cocaine (0.1-3.0 mg/kg) dramatically increased on day 2 and remained (except 1.0 mg/kg dose) at these levels through day 5. Following two drug-free days (days 6 and 7), the increase in blood pressure caused by cocaine (0.1, 0.3 and 3.0 mg/kg) on day 8 was still elevated. Unlike blood pressure, no enhancement in heart rate response to cocaine was observed.
引用
收藏
页码:119 / 122
页数:4
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