
A boy in Pakistan who is able to walk on burning coals sparked a new concept for relieving pain in fibromyalgia and other pain syndromes. A geneticist at the University of Cambridge discovered this stunt boy as he was studying families in northern Pakistan. A genetic abnormality in which pain cannot be sensed was found within this boy's family. The results were written up in the journal
Nature in the December 2006 issue.
The abnormality is in the
Nav 1.7, sodium channel found in peripheral nerve cells. The channel is incomplete, and this blocks the transmission of pain from an outside stimulus to the spinal cord and brain. Nav 1.7 is only found in peripheral nerves outside the heart and central nervous system, so that blocking this channel will not affect the heart, brain, or spinal cord. This will result in fewer side effects than those found in presently marketed painkillers.
Newron Pharmaceuticals SpA of Italy is already doing clinical tests in humans on a Nav 1.7 blocker.
AstraZeneca,
Pfizer, and
Merck are also studying Nav 1.7 blocking compounds that they hope to market in the future.
“It’s the ultimate target,” said John Wood, a professor of molecular neurobiology at University College London who co- wrote the Nature article with Woods in December 2006. “The people that don’t have the channel are not ill, they have no problems, so if you find a drug that blocks it, they should be pain-free and also free of side effects.”
Read more
here.