Scientists finds secret to ‘feeling no pain’ in life

Via timesofindia

Scientists at University College London (UCL) have found the recipe for painlessness in a study that used genetically modified mice to show a channel responsible for allowing pain signals to pass along nerve cell membranes is vital to feel agony.

In 2006, it was shown that sodium channel Nav1.7 is important for signalling in pain pathways and people born with non-functioning Nav1.7 do not feel pain.

UCL researchers found that mice and people who lack Nav1.7 also produce higher than normal levels of natural opioid peptides. To examine if opioids were important for painlessness, the researchers gave naloxone, an opioid blocker, to genetically modified mice lacking Nav1.7 and found that they became able to feel pain.

 

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They then gave naloxone to a 39-year-old woman with the rare mutation and she felt pain for the first time in her life. 

“After a decade of rather disappointing drug trials, we now have confirmation that Nav1.7 really is a key element in human pain,” said senior author professor John Wood (UCL Medicine). 

“The secret ingredient turned out to be good old-fashioned opioid peptides, and we have now filed a patent for combining low dose opioids with Nav1.7 blockers. This should replicate the painlessness experienced by people with rare tations, and we have already successfully tested this approach in unmodified mice.”  Read mufull article..

 

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