作者: Hsiu-Ying T. Yang , Tao Tao , Michael J. Iadarola
DOI: 10.1016/J.NPEP.2007.06.004
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摘要: Abstract The tetra-peptide FMRF-NH 2 is a cardioexcitatory peptide in the clam. Using antibody against this peptide, -like immunoreactive material was detected mammalian CNS. Subsequently, peptides were isolated from bovine brain and characterized to be FLFQPQRF-NH (NPFF) AGEGLSSPFWSLAAPQRF-NH (NPAF). genes encoding NPFF precursor proteins receptors 1 are expressed all vertebrate species examined date highly conserved. Among many biological roles suggested for system, possible modulatory role of nocicetion opiate analgesia has been most widely investigated. Pharmacologically, NPFF-related found exhibit also potentiate analgesic activity opiates when administered intrathecally but attenuate induced intracerebroventricularly. RF-NH including delay rate acid sensing ion channels (ASIC) desensitization resulting enhancing gated currents, raising possibility that may have pain through ASIC. as well NPFF-R2, preferred receptor NPFF, unevenly rat CNS with highest levels localized superficial layers dorsal spinal cord. These two present root ganglia (DRG), though at low normal rats. NPFF-R2 mRNAs coordinately up-regulated cord DRG rats peripheral inflammation. In addition, immunoreactivity primary afferents increased by findings early studies on morphine modulating activities modulation further supported distribution its regulation system vivo .