Spezifität
This antibody recognises the opioid peptide dynorphin A , a cleavage product of big dynorphin, itself derived from the precursor pro-encephalin-B, also known as preprodynorphin. Rabbit anti dynorphin A antibody binds to both dynorphin A 1-17 and 1-8 but not with other big dynorphin cleavage products such as dynorphin B, also known as rimorphin. Dynorphin A immunoreactive cells are found in the paraventricular and supraoptic nucleus and in hippocampal mossy fibers of rat brain following kainic acid administration and colchicine induced neurotoxicity. Dynorphins play a role in multiple physiologic processes including pain perception and responses to stress (Rácz et al. 2013). They mimic and compete with a number of opiate drugs(Chavkin 2013). Dysregulation of dynorphin A expression has been linked to progression of neurodegenerative conditions such as Altzheimer’s disease and appears to play a significant role in the pathobiology of epilepsy. Rabbit anti dynorphin antibody has been used successfully for the immunohistochemical demonstration of ‘mossy fibre’ sprouting in hippocampal sclerosis and in a virally induced disease model in the rat.