Fernandes M, Kluwe S, Coper H
Psychopharmacology (Berl). 1977 Oct 20;54(2):197-201. doi: 10.1007/BF00426780.
Tolerance to various effects of morphine in the rat can be quantified by means of a shift of semi-logarithmic dose-response curves. Tolerance to analgesia (hot plate, acetic acid writhing), catalepsy, and the tilted plane develops in a closely similar manner. Also, the stimulating effects of about 1 mg/kg morphine-HC1 tested in an open-field procedure are somewhat less pronounced in chronically treated rats than in naive ones. There is no correlation between tolerance development and the acute ED50 of different tests.
大鼠对吗啡各种效应的耐受性可通过半对数剂量-反应曲线的位移来定量。对镇痛作用(热板法、醋酸扭体法)、僵住症和倾斜平面试验的耐受性以非常相似的方式发展。此外,在旷场试验中测试的约1mg/kg盐酸吗啡的刺激作用,在慢性处理的大鼠中比在未处理的大鼠中稍不明显。耐受性发展与不同试验的急性半数有效量(ED50)之间没有相关性。