Bujalska-Zadrożny M, de Cordé A, Pawlik K. Influence of nitric oxide synthase or cyclooxygenase inhibitors on cannabinoids activity in streptozotocin-induced neuropathy.
Pharmacol Rep 2014;
67:209-16. [PMID:
25712641 DOI:
10.1016/j.pharep.2014.08.023]
[Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Revised: 08/24/2014] [Accepted: 08/28/2014] [Indexed: 01/06/2023]
Abstract
BACKGROUND
Influence of a relatively specific inhibitor cyclooxygenase (COX)-2, celecoxib, a relatively specific inhibitor of neuronal nitric oxide synthase (NOS), 7-Ni, and a relatively selective inhibitor of inducible NOS, L-NIL, on the action of a preferentially selective CB1 cannabinoid receptor agonist, Met-F-AEA and a selective CB2 cannabinoid receptor agonist, AM 1241 was investigated, in a streptozotocin (STZ)-induced neuropathy.
METHODS
Studies were performed on male Wistar rats. Changes in nociceptive thresholds were determined using mechanical stimuli - the modification of the classic paw withdrawal test described by Randall-Selitto. Diabetes was induced by a single administration of STZ.
RESULTS
In a diabetic neuropathic pain model, pretreatment with celecoxib, L-NIL and 7-Ni, significantly increased the antihyperalgesic activity of both Met-F-AEA and AM 1241.
CONCLUSIONS
The results of this study seemed to indicate that the interaction between cannabinoid, COX-2 and NOS(s) systems might exist. Concomitant administration of small doses of CB1 and/or CB2 receptor agonists and COX-2 or NOS inhibitors can be effective in the alleviation of diabetic neuropathic pain.
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