Journal
EUROPEAN JOURNAL OF PHARMACOLOGY
Volume 415, Issue 1, Pages R5-R7Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0014-2999(01)00798-1
Keywords
analgesia; cannabinoid CB1 receptor; tibial nerve injury
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Although cannabinoids are known to be more effective analgesics against chronic rather than acute pain, the mechanism underlying this phenomenon is still unclear. We report now that contralateral thalamic cannabinoid CB1 receptors are upregulated after unilateral axotomy of the tibial branch of the sciatic nerve, a rat model of chronic neuropathic pain, and hypothesize that cannabinoid CB1 receptor upregulation contributes to the increased analgesic efficacy of cannabinoids in chronic pain conditions. (C) 2001 Elsevier Science B.V. All rights reserved.
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