Modulation of μ-mediated antinociception by δ agonists in the mouse: selective potentiation of morphine and normorphine by [D-Pen2, D-Pen5]enkephalin

Endogenous opioid peptides: multiple agonists and receptors

John A.H. Lord, Angela A. Waterfield, John Hughes et al. · Nature · 1977 · 2.5K citations

Medicine, Pharmacology, Neuroendocrinology +9

PHARMACOLOGICAL EFFECTS PRODUCED BY INTRACEREBRAL INJECTION OF DRUGS IN THE CONSCIOUS MOUSE

Thomas J. Haley, WF McCormick · British Journal of Pharmacology and Chemotherapy · 1957 · 1.5K citations · Full text

Medicine, Neuroscience, Pharmacology +12

The inhibitory effect of fentanyl and other morphine-like analgesics on the warm water induced tail withdrawl reflex in rats.

Patricia A. Janssen, Niemegeers Cj, Dony Jg · PubMed · 1963 · 525 citations

Medicine, Pharmacology, Behavioral Pharmacology +13

The binding spectrum of narcotic analgesic drugs with different agonist and antagonist properties

Jacques Magnan, Stewart J. Paterson, Alessandra Tavani et al. · Naunyn-Schmiedeberg s Archives of Pharmacology · 1982 · 509 citations

Medicine, Medicinal Chemistry, Pharmacology +16

Roles of mu, delta and kappa opioid receptors in spinal and supraspinal mediation of gastrointestinal transit effects and hot-plate analgesia in the mouse.

Frank Porreca, Henry I. Mosberg, R. P. Hurst et al. · Journal of Pharmacology and Experimental Therapeutics · 1984 · 430 citations

Medicine, Pharmacology, Molecular Pharmacology +16