The effects of morphine, naloxone, and nalorphine on responding maintained under a variable-interval schedule of food presentation were assessed in rhesus monkeys before and after successive periods of daily morphine maintenance (15.0 mg/kg/day SC). Withdrawal from morphine dependence was accomplish
Effects of morphine, nalorphine and naloxone on neocortical release of acetylcholine in the rat
β Scribed by John D. Matthews; Gaston Labrecque; Edward F. Domino
- Publisher
- Springer
- Year
- 1973
- Tongue
- English
- Weight
- 411 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0033-3158
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β¦ Synopsis
The effects of morphine (10 mg/kg), nalorphine (1 and 10 mg/kg), and naloxone (1 mg/kg) were studied on the neoeortical release of aeetylcholine (ACh) in midpontine pretrigeminal transected rats. Morphine and, to a lesser extent, nalorphine decreased ACh release. Naloxone was ineffective alone but antagonized the action of morphine.
π SIMILAR VOLUMES
Intraventricular administration of kainic acid at the dose of 0.1 pg induces a significant depression of rectal temperature followed rapidly by its slight elevation. Morphine (40.0 rag. kg-1 IP), which by itself elicited biphasic effect on the body temperature of rats-initially hypothermia followed