Definitions for "Dynorphin"
full biological function unknown, 2 possibilities. In development, neuroendocrine regulation of the developing hypothalamo-pituitary-adrenal (HPA) axis. Secondly, a potential endogenous opioid peptide which has a high affinity for the kappa-opioid receptor. (More? Endocrine Notes)
an endogenous peptide which functions as a selective agonist for the kappa opioid receptors.
Dynorphin is a class of peptides produced by many different populations of neurons, which has some opiate-like activity. It is thus classed as an endogenous opioid peptide. Dynorphin functions primarily as a kappa opioid receptor agonist, meaning that it acts mainly at kappa opioid receptors.
A powerful neuromodulator, produced in the central nervous system, that blocks pain perception by inhibiting pain pathways.