Dorsal horn opiate administration attenuates the perceived intensity of noxious heat stimulation in behaving monkey.
In monkeys trained to detect and discriminate noxious heat stimuli, morphine microinjected into the medullary dorsal horn attenuated the perceived intensity of noxious heat in a dose- and stimulus-dependent fashion. These data demonstrate a pharmacologically specific effect of opiates on the sensory intensity component of pain at the earliest central relay pathway transmitting noxious information.
J L
JL
Oliveras
W
W
Maixner
R
R
Dubner
M C
MC
Bushnell
G
G
Duncan
D A
DA
Thomas
R
R
Bates
D000818:Animals; D001522:Behavior, Animal / Q000502:physiology*; D004193:Discrimination Learning / Q000187:drug effects / Q000502:physiology; D004305:Dose-Response Relationship, Drug; D006358:Hot Temperature; D008252:Macaca fascicularis; D008253:Macaca mulatta; D008845:Microinjections; D009020:Morphine / Q000494:pharmacology*; D010146:Pain / Q000503:physiopathology*; D011930:Reaction Time / Q000187:drug effects / Q000502:physiology; D012677:Sensation / Q000187:drug effects* / Q000502:physiology; D013116:Spinal Cord / Q000187:drug effects*
D009020:Morphine