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Origin of inherited pain disorder pinpointed

cts to correct this abnormality in cultures of neurons.

The researchers also compared PEPD with another inherited pain disorder, primary erythermalgia (PE) that is not alleviated by carbamazepine. PE is also caused by mutations in SCN9A and is characterized by pain in the extremities triggered by exercise or temperature change. In contrast to PEPD, which is caused by mutations that disrupt inactivation the sodium channel, PE arises from mutations that lower its activation threshold.

The researchers concluded that their findings "further emphasize the critical role of [this sodium channel] in human inflammatory pain and explain the differential drug sensitivity of PEPD and PE."


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Contact: Heidi Hardman
hhardman@cell.com
617-397-2879
Cell Press
6-Dec-2006


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