Abstract:
:Opioid-cholecystokinin (CCK) interactions at the spinal level were investigated by looking for possible modulations by various opioid agonists of the release of cholecystokinin-like material (CCKLM) from slices of the dorsal zone of the rat lumbar enlargement. K(+)-evoked CCKLM overflow was reduced by 0.1-10 microM of the mu agonist DAGO or 10 nM to 3 microM of the delta agonist DTLET. By contrast, at a higer concentration (10 microM), the latter drug as well as morphine enhanced CCKLM overflow. Although inactive alone, the kappa opioid agonist U 50488 H (1 microM) prevented the inhibitory effect of DAGO without affecting that of DTLET. These data suggest that an opioid acting through the stimulation of mu, delta and kappa receptors (such as morphine) should produce a net increase in the spinal release of CCK.
journal_name
Neurosci Lettjournal_title
Neuroscience lettersauthors
Benoliel JJ,Bourgoin S,Mauborgne A,Legrand JC,Hamon M,Cesselin Fdoi
10.1016/0304-3940(91)90094-akeywords:
subject
Has Abstractpub_date
1991-04-01 00:00:00pages
204-7issue
2eissn
0304-3940issn
1872-7972pii
0304-3940(91)90094-Ajournal_volume
124pub_type
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