PK20, a new opioid-neurotensin hybrid peptide that exhibits central and peripheral antinociceptive effects
Abstract Background The clinical treatment of various types engine Component of pain relies upon the use of opioid analgesics.However most of them produce, in addition to the analgesic effect, several side effects such as the development of dependence and addiction as well as sedation, dysphoria, and constipation.One solution to these problems are