title: Substance P analog, DiMe-C7: evidence for stability in rat brain and prolonged central actions.
abstract: A metabolically protected analog of substance P, [pGlu5-MePhe8-MeGly9]SP(5-11) (DiMe-C7), was approximately equipotent with substance P in causing increased locomotor activity after microinfusion into the ventral tegmental area of rat brain, but the effects of DiMe-C7 on behavior were considerably prolonged. There was little metabolic degradation of tritiated DiMe-C7 for up to 1 hour after infusion, whereas tritiated substance P was completely degraded within 10 minutes.
mesh_terms: D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects; D001921:Brain / Q000378:metabolism*; D009043:Motor Activity / Q000187:drug effects; D010446:Peptide Fragments; D011761:Pyrrolidonecarboxylic Acid / Q000031:analogs & derivatives; D051381:Rats; D013373:Substance P / Q000031:analogs & derivatives* / Q000378:metabolism / Q000494:pharmacology
chemical_list: D010446:Peptide Fragments; D013373:Substance P; C032720:substance P (5-11), pGlu(5)-MePhe(8)-MeGly(9)-; D011761:Pyrrolidonecarboxylic Acid