Abstract
Chronic morphine administration causes a 40% reduction of 3H-labeled 5-hydroxytryptamine (5-HT) binding in the brain stems of dependent rats, with little or no effect in other brain regions. Binding of [3H]dihydroalprenolol, 2,2,6-[3H]dimethoxyphenoxy-(ethylaminomethyl)benzodioxan, and [3H]spiroperidol is not affected by this treatment. The specificity of the reduction in 5-HT receptor number in the brain stem is discussed in terms of persistent activation of central 5-HT neurons by long-term treatment with morphine.
- Copyright © 1981 by The American Society for Pharmacology and Experimental Therapeutics
MolPharm articles become freely available 12 months after publication, and remain freely available for 5 years.Non-open access articles that fall outside this five year window are available only to institutional subscribers and current ASPET members, or through the article purchase feature at the bottom of the page.
|
Log in using your username and password
Purchase access
You may purchase access to this article. This will require you to create an account if you don't already have one.