the synthetic opioid met-enkephalin analog [ d-ala2 , mephe4 , met ( 0 ) 5ol ] enkephalin ( damme ) and the opiate morphine injected intraperitoneally to rats at doses of 0.5-2 and 5-20 mg/kg , respectively , showed a protective effect on gastric damage induced by oral administration of necrotizing agents ( 0.6 n hcl or 0.2 n naoh solutions , 1 ml/rat ) .
C0014295
met-enkephalin
C0949300
damme