Skingle M, Tyers M B
Br J Pharmacol. 1980 Oct;70(2):323-7. doi: 10.1111/j.1476-5381.1980.tb07939.x.
1 The antinociceptive activities of morphine, codeine and dextropropoxyphene (micro-agonists), buprenorphine and Mr 2034 (-)5,9-dimethyl-2-(tetrahydrofurfuryl)-2'-hydroxy-6,7-benzomorphan have been determined against nociceptive responses to electrical stimulation of the tooth pulp in the conscious dog. 2 Dose-dependent increases in nociceptive threshold were obtained for all of the analgesic drugs tested at doses within their antinociceptive range as determined in nociceptive pressure and chemical tests in rodents.