protein neuromedin U DSSTox_Generic_SID:40559 neuromedin U CASRN:117505-80-3 Ele Holloway MESH:C056900 James Malone Tomasz Adamusiak NCIt:C33975 Neuromedin U (or NmU) is a neuropeptide found in the brain of humans and other mammals, which has a number of diverse functions including contraction of smooth muscle, regulation of blood pressure, pain perception, appetite, bone growth, and hormone release. It was first isolated from the spinal cord in 1985, and named after its ability to cause smooth muscle contraction in the uterus.