DPDPE (trifluoro<wbr/>acetate salt)

DPDPE (trifluoroacetate salt)

CAT N°: 23184
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From 92.00 78.20

DPDPE is a synthetic enkephalin peptide and ?-opioid receptor agonist (Ki = 2.7 nM in rat brain homogenates).{37712} DPDPE has greater than 250-fold selectivity for the ?-opioid receptor over the ?- and ?-opioid receptors in rat brain homogenates (Kis = 713 and >1,500 nM, respectively). It also selectively inhibits electrically-evoked contractions in mouse vas deferens over guinea pig myenteric plexus (IC50s = 4.14 and 3,000 nM, respectively), which does not express the ?-opioid receptor. In vivo, DPDPE (140 nmol, i.v.) completely blocks tonic hindlimb extension induced by maximal electroshock (MES) in 50% of tested rats and increases the flurothyl-induced seizure threshold by 15-20% in rats, effects that can be blocked by the selective ?-opioid receptor antagonist ICI 154129.{37713} DPDPE (1-10 ?g, i.v) dose-dependently reduces formalin-induced paw licking and lifting, indicating analgesia, in rats.{37714} However, DPDPE (15 ?g, i.v.) increases the latency to tail withdrawal in the tail-immersion test in both wild-type and ?-opioid receptor knockout mice by 6.74 and 7.6 seconds, respectively, compared to a saline control, but not in ?-opioid receptor knockout mice, and the effect can be blocked by the ?-opioid receptor antagonist CTOP.{37715}

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