we studied the effects of acute and long-term , continuous administration of six opioid compounds -- naloxone , naltrexone , diprenorphine , leucine enkephalin , dynorphin 1-13 , and dynorphin 3-13 -- on neurologic function , survival , and infarct size in a feline model of acute focal cerebral ischemia .
C0027358
naloxone
C0027360
naltrexone