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Pain is generally considered to have a sensory and an affective component. Clinical research has suggested that morphine more potently attenuates the affective component as compared to the sensory component. Because preclinical nociception models typically focus on the sensory component of nociception, and do not assess the affective component, it is unclear whether this potency difference of morphine...
Nociceptors innervating inflamed tissue acquire an abnormal spontaneous discharge that is believed to be at least part of the reason for the persistent spontaneous pain, allodynia, and hyperalgesia that accompany inflammation. Recent studies suggest that patients with chronic inflammatory pain may obtain an analgesic effect with transdermal application of lidocaine that yields very low plasma levels...
Glutamate plays a key role in modulation of nociceptive processing. This excitatory amino acid exerts its action through two distinct types of receptors, ionotropic and metabotropic glutamate receptors (mGluRs). Eight mGluRs have been identified and divided in three groups based on their sequence similarity, pharmacology and G-protein coupling. While the role of group I and II mGluRs is now well established,...
Fast Inhibitory controls mediated by glycine (GlyRs) and GABAA receptors (GABAARs) play an important role to prevent the apparition of pathological pain symptoms of allodynia and hyperalgesia. The use of positive allosteric modulators of these receptors, specifically expressed in the spinal cord, may represent an interesting strategy to limit or block pain expression. In this study, we have used stereoisomers...
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