Description
NeurokininAisanendogenousneuromodulatorypeptideformerlyknownassubstanceK.Likeotherneurokinins,neurokininAinducescontractioninilealsmoothmusclecellsandcontributestonociceptiveactivity.NeurokininAexhibitspro-inflammatory,bronchoconstrictive,andvasodilatoryactivities.Inmacrophages,neurokininAbindsneurokinin1/2(NK1/2)receptors,activatingERK1/2,PI3K/Akt,andNF-κBincreasingexpressionofinflammatorycytokines.NeurokininAalsopromotesvasodilation,decreasesheartrate,andinducesbronchoconstrictioninanimalmodels.