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Opiorphin is a painkiller which is present in our saliva which is six times more powerful than morph



Saliva from humans has yielded a natural painkiller up to six times more powerful than morphine, researchers say.

The substance, dubbed opiorphin, may spawn a new generation of natural painkillers that relieve pain as well as morphine but without the addictive and psychological side effects of the traditional drug.

When the researchers injected a pain-inducing chemical into rats’ paws, 1 milligram of opiorphin per kilogram of body weight achieved the same painkilling effect as 3 milligrams of morphine.

The substance was so successful at blocking pain that, in a test involving a platform of upended pins, the rats needed six times as much morphine as opiorphin to render them oblivious to the pain of standing on the needle points.



“Its pain-suppressive effect is like that of morphine,” says Catherine Rougeot at the Pasteur Institute in Paris, France, who led the research. “But we have to test its side effects as it is not a pure painkiller,” she says. “It may also be an anti-depressive molecule.”

Rougeot and colleagues discovered that opiorphin works in nerve cells of the spine by stopping the usual destruction of natural pain-killing opiates there called enkephalins.

Opiorphin is such a simple molecule that it should be possible to synthesize it and produce large quantities without having to isolate it from saliva, Rougeot explains. Alternatively, it might be possible to find drugs that trigger patients’ bodies to produce more of the molecule themselves.


Source: https://www.newscientist.com/article/dn10514-natural-born-painkiller-found-in-human-saliva/#ixzz6UN2ehlep

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