Synthesis of molecular probes for exploring the novel receptor involved in the allodynia induction

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In order to explore a novel receptor involved in the induction of allodynia (a typical symptom of neuropathic pain), we synthesized molecular probes that enable us to visualize the site of action of drug molecules in vivo. Imaging analysis using one of the probes in rats revealed the specific accumulation of the molecule to the regions of cerebral cortex, hippocampus and spinal cord. This study also demonstrated the possible involvement of kainate-type receptor in allodynia, suggesting a drug that can modulate the function of the receptor becomes a potential candidate for the therapeutic agent for allodynia.