Enterostatin(VPDPR) Has Anti-analgesic and Anti-amnesic Activities.

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  • Enterostatin (VPDPR) Has Anti-analgesic and Anti-amnesic Activites

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Enterostatin (VPDPR), an anorexigenic peptide derived from the amino terminus of procolipase, significantly inhibited analgesia induced by the μ-opioidagonist morphine (5 mg/kg, s.c.) after i.c.v. administration to mice at a dose of 100 nmol. On the other hand, VPDPR (∼200 nmol, i.c.v.) did not attenuate analgesia induced by the κ-opioid agonist D-Phe-D-Phe-D-Nle-D-Arg-NH2 (100 μg/mouse, i.c.v.) or δ-opioid agonist DTLET (4 nmol/mouse, i.c.v.). VPDPR (100 nmol, i.c.v.) significantly improved amnesia induced by scopolamine (0.2 mg/kg, i.p.) in mice. However, VPDPR did not enhance memory in normal mice at the same dose.

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