出典:Wiktionary
opiorphin (countable かつ uncountable, 複数形 opiorphins)
出典:Wikipedia
出典:『Wikipedia』 (2011/06/03 11:40 UTC 版)
Opiorphin is an endogenous chemical compound first isolated from human saliva. Initial research with mice shows the compound has a painkilling effect greater than that of morphine. It works by stopping the normal breakdown of natural pain-killing opioids in the spine, called enkephalins. It is a relatively simple molecule consisting of a five-amino acid polypeptide, Gln-Arg-Phe-Ser-Arg.