A role of TRPA1 in mechanical hyperalgesia is revealed by pharmacological inhibition.
A role of TRPA1 in mechanical hyperalgesia is revealed by pharmacological inhibition.
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DOI:
10.1186/1744-8069-3-40
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发表时间:
2007-12-17
期刊:
影响因子:
3.3
通讯作者:
Patapoutian A
中科院分区:
文献类型:
--
作者:
Petrus M;Peier AM;Bandell M;Hwang SW;Huynh T;Olney N;Jegla T;Patapoutian A
Mechanical hyperalgesia is a clinically-relevant form of pain sensitization that develops through largely unknown mechanisms. TRPA1, a Transient Receptor Potential ion channel, is a sensor of pungent chemicals that may play a role in acute noxious mechanosensation and cold thermosensation. We have developed a specific small molecule TRPA1 inhibitor (AP18) that can reduce cinnameldehyde-induced nociception in vivo. Interestingly, AP18 is capable of reversing CFA-induced mechanical hyperalgesia in mice. Although TRPA1-deficient mice develop normal CFA-induced hyperalgeisa, AP18 is ineffective in the knockout mice, consistent with an on-target mechanism. Therefore, TRPA1 plays a role in sensitization of nociception, and that compensation in TRPA1-deficient mice masks this requirement.
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