Discriminative stimulus, antagonist, and rate-decreasing effects of cyclorphan: Multiple modes of action
dc.contributor.author | Herling, Seymore | en_US |
dc.contributor.author | Hein, David W. | en_US |
dc.contributor.author | Nemeth, Mary A. | en_US |
dc.contributor.author | Valentino, Rita J. | en_US |
dc.contributor.author | Woods, James H. | en_US |
dc.date.accessioned | 2006-04-07T17:55:15Z | |
dc.date.available | 2006-04-07T17:55:15Z | |
dc.date.issued | 1982-01-25 | en_US |
dc.identifier.citation | Herling, Seymore, Hein, David W., Nemeth, Mary A., Valentino, Rita J., Woods, James H. (1982/01/25)."Discriminative stimulus, antagonist, and rate-decreasing effects of cyclorphan: Multiple modes of action." Life Sciences 30(4): 331-341. <http://hdl.handle.net/2027.42/24076> | en_US |
dc.identifier.uri | http://www.sciencedirect.com/science/article/B6T99-477CGRF-2CR/2/60ac810ed40e8137cdbf39af387bed64 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/24076 | |
dc.identifier.uri | http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=6122153&dopt=citation | en_US |
dc.description.abstract | The discriminative effects of cyclorphan were studied in pigeons trained to discriminate 0.32 mg/kg ethylketazocine, 1.8 mg/kg cyclazocine, or 32 mg/kg naltrexone from saline. A fourth group of pigeons was administered 100 mg/kg/day morphine and trained to discriminate 0.1 mg/kg naltrexone from saline. Cyclorphan produced dose-related ethylketazocine-appropriate responding that reached a maximum of 83% of the total session responses at 0.3 mg/kg. Higher cyclorphan doses produced less ethylketazocine-appropriate responding. In pigeons trained to discriminate cyclazocine from saline, maximum drug-appropriate responding of greater than 90% occured at 5.6-10.0 mg/kg cyclorphan. In narcotic-naive pigeons trained to discriminate 32 mg/kg naltrexone from saline, cyclorphan produced a maximum of less than 50% drug-appropriate responding. In contrast, in pigeons chronically administered morphine and trained to discriminate 0.1 mg/kg naltrexone from saline, 1.0 mg/kg cyclorphan resulted in 100% drug-appropriate responding. In pigeons responding under a multiple fixed-interval, fixed-ratio schedule of food delivery, cyclorphan produced a complete dose-related reversal of the rate-decreasing effects of 10 mg/kg morphine, the maximally effective antagonist doses being 1.0-3.2 mg/kg. Higher cyclorphan doses (10 mg/kg) resulted in response rate decreases that were not reversed by naloxone (1 mg/kg). Thus, cyclorphan has discriminative effects that are similar to those of both ethylketazocine and, at 20-fold higher doses, cyclazocine. In addition, in morphine-treated pigeons, cyclorphan, across the same range of doses that produce ethylketazocine-appropriate responding, has discriminative effects that are similar to those of naltrexone, an effect that is probably related to the antagonist action of the drug. | en_US |
dc.format.extent | 641707 bytes | |
dc.format.extent | 3118 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | Elsevier | en_US |
dc.title | Discriminative stimulus, antagonist, and rate-decreasing effects of cyclorphan: Multiple modes of action | en_US |
dc.type | Article | en_US |
dc.rights.robots | IndexNoFollow | en_US |
dc.subject.hlbsecondlevel | Natural Resources and Environment | en_US |
dc.subject.hlbsecondlevel | Molecular, Cellular and Developmental Biology | en_US |
dc.subject.hlbsecondlevel | Ecology and Evolutionary Biology | en_US |
dc.subject.hlbtoplevel | Health Sciences | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Pharmacology and Psychology University of Michigan, Ann Arbor, Michigan 48109, USA | en_US |
dc.contributor.affiliationum | Department of Pharmacology and Psychology University of Michigan, Ann Arbor, Michigan 48109, USA | en_US |
dc.contributor.affiliationum | Department of Pharmacology and Psychology University of Michigan, Ann Arbor, Michigan 48109, USA | en_US |
dc.contributor.affiliationum | Department of Pharmacology and Psychology University of Michigan, Ann Arbor, Michigan 48109, USA | en_US |
dc.contributor.affiliationum | Department of Pharmacology and Psychology University of Michigan, Ann Arbor, Michigan 48109, USA | en_US |
dc.identifier.pmid | 6122153 | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/24076/1/0000329.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1016/0024-3205(82)90569-0 | en_US |
dc.identifier.source | Life Sciences | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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