Buprenorphine Blocks ϵ- and μ-Opioid Receptor-Mediated Antinociception in the Mouse

@article{Mizoguchi2003BuprenorphineB,
  title={Buprenorphine Blocks ϵ- and $\mu$-Opioid Receptor-Mediated Antinociception in the Mouse},
  author={Hirokazu Mizoguchi and Amanda Spaulding and Randy J. Leitermann and Hsiang-En Wu and Hiroshi Nagase and Leon F. Tseng},
  journal={Journal of Pharmacology and Experimental Therapeutics},
  year={2003},
  volume={306},
  pages={394 - 400}
}
Antagonistic properties of buprenorphine for ϵ- and μ-opioid receptors were characterized in β-endorphin- and [d-Ala2,N-Me-Phe4,Gly5-ol]-enkephalin (DAMGO)-induced antinociception, respectively, with the tail-flick test in male ICR mice. ϵ-Opioid receptor agonist β-endorphin (0.1–1 μg), μ-opioid receptor agonist DAMGO (0.5–20 ng), or buprenorphine (0.1–20 μg) administered i.c.v. dose dependently produced antinociception. The antinociception induced by 10 μg of buprenorphine given i.c.v. was… 

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