The sympathetic nervous system is involved in the inhibitory effect of morphine on the colon motility in rats

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

Microinjection of morphine into the periaqueductal gray evokes the release of serotonin from spinal cord

Tony L. Yaksh, Gertrude M. Tyce · Brain Research · 1979 · 232 citations

Life Sciences, Neurobiology, Neuroscience +12

Inhibition of gastrointestinal transit by morphine in rats results primarily from direct drug action on gut opioid sites.

L. Manara, Giuseppe Bianchi, Patrizia Ferretti et al. · Journal of Pharmacology and Experimental Therapeutics · 1986 · 178 citations

Medicine, Pharmacokinetics, Pharmacotherapy +17

Central and peripheral actions of morphine on intestinal transit.

John J. Stewart, N. W. Weisbrodt, Thomas F. Burks · Journal of Pharmacology and Experimental Therapeutics · 1978 · 170 citations

Medicine, Pharmacokinetics, Pharmacology +14

Monoamine release from cat spinal cord by somatic stimuli: an intrinsic modulatory system.

Gertrude M. Tyce, Tony L. Yaksh · The Journal of Physiology · 1981 · 164 citations · Full text

Life Sciences, Neurobiology, Neuroscience +17