Role of cannabinoids in the treatment of pain and (painful) spasticity.
Summary of "Role of cannabinoids in the treatment of pain and (painful) spasticity."
Both the discovery of the endocannabinoid system (ECS) and its role in the control of pain and habituation to stress, as well as the significant analgesic and antihyperalgesic effects in animal studies, suggest the usefulness of cannabinoids in pain conditions. However, in human experimental or clinical trials, no convincing reduction of acute pain, which may be caused by a pronociceptive, ECS-triggered mechanism on the level of the spinal cord, has been demonstrated. In contrast, in chronic pain and (painful) spasticity, an increasing number of randomized, double-blind, placebo-controlled studies have shown the efficacy of cannabinoids, which is combined with a narrow therapeutic index. Patients with unsatisfactory response to other methods of pain therapy and who were characterized by failed stress adaptation particularly benefited from treatment with cannabinoids. None of the attempts to overcome the disadvantage of the narrow therapeutic index, either by changing the route of application or by formulating balanced cannabinoid preparations, have resulted in a major breakthrough. Therefore, different methods of administration and other types of cannabinoids, such as endocannabinoid modulators, should be tested in future trials.
Department of Anaesthesiology, Pain Clinic, Hannover Medical School, Hannover, Germany. email@example.com
This article was published in the following journal.
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/21142261
- DOI: http://dx.doi.org/10.2165/11585260-000000000-00000
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Medical and Biotech [MESH] Definitions
A dull or sharp painful sensation associated with the outer or inner structures of the eyeball, having different causes.
A widely distributed purinergic P2X receptor subtype that plays a role in pain sensation. P2X4 receptors found on MICROGLIA cells may also play a role in the mediation of allodynia-related NEUROPATHIC PAIN.
Persistent pain that is refractory to some or all forms of treatment.
A class of G-protein-coupled receptors that are specific for CANNABINOIDS such as those derived from CANNABIS. They also bind a structurally distinct class of endogenous factors referred to as ENDOCANNABINOIDS. The receptor class may play a role in modulating the release of signaling molecules such as NEUROTRANSMITTERS and CYTOKINES.
Idiopathic painful nonsuppurative swellings of one or more costal cartilages, especially of the second rib. The anterior chest pain may mimic that of coronary artery disease. (Dorland, 27th ed.)