Faris PL, McLaughlin CL, Baile CA, Olney JW, Komisaruk BR. Morphine analgesia potentiated but tolerance not affected by active immunization against cholecystokinin.
Science 1984;
226:1215-7. [PMID:
6505689 DOI:
10.1126/science.6505689]
[Citation(s) in RCA: 59] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Administration of cholecystokinin was recently found to attenuate opiate analgesia. In the present study, the role of endogenous cholecystokinin in opiate analgesia was examined. Endogenously released cholecystokinin was sequestered by antibodies to cholecystokinin developed in response to an active immunization procedure. Morphine analgesia was potentiated and prolonged in rats immunized against cholecystokinin. The rate of development of morphine tolerance, however, was not affected by the antibodies. Endogenous cholecystokinin appears to function as a short-term modulator of opiate action.
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