Title : 5-hydroxytryptamine (HT)1A receptors and the tail-flick response. II. High efficacy 5-HT1A agonists attenuate morphine-induced antinociception in mice in a competitive-like manner.

Pub. Date : 1991 Mar

PMID : 1672380






3 Functional Relationships(s)
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1 High efficacy 5-HT1A agonists attenuate morphine-induced antinociception in mice in a competitive-like manner. Morphine 5-hydroxytryptamine (serotonin) receptor 1A Mus musculus
2 The selective 5-HT1A agonist, (+-)-8-hydroxy-diprolaminotetralin HBr (8-OH-DPAT), dose-dependently antagonized morphine-induced antinociception (MIA) without affecting the latency to respond when applied alone. Morphine 5-hydroxytryptamine (serotonin) receptor 1A Mus musculus
3 These data show that, over a certain range of doses, the systemic administration of 8-OH-DPAT and other high efficacy 5-HT1A agonists functionally antagonizes the antinociceptive action of systemically applied morphine in a competitive-like manner. Morphine 5-hydroxytryptamine (serotonin) receptor 1A Mus musculus