Penile erection and yawning induced by dopamine D2-like receptor agonists in rats: influence of strain and contribution of dopamine D2, but not D3 and D4 receptors

@article{Depoortre2009PenileEA,
  title={Penile erection and yawning induced by dopamine D2-like receptor agonists in rats: influence of strain and contribution of dopamine D2, but not D3 and D4 receptors},
  author={Ronan Y Depoort{\`e}re and Laurent Bardin and Michael Rodrigues and Erika Abrial and M. Aliaga and Adrian Newman-Tancredi},
  journal={Behavioural Pharmacology},
  year={2009},
  volume={20},
  pages={303-311}
}
Dopamine (DA) is implicated in penile erection (PE) and yawning (YA) in rats through activation of D2-like receptors. However, the exact role of each subtype (D2, D3 and D4) of this receptor family in PE/YA is still not clearly elucidated. We recorded concomitantly PE and YA after treatment with agonists with various levels of selectivity for the different subtypes of D2-like receptors. In addition, we investigated the efficacy of antagonists with selective or preferential affinity for each of… 
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