Central effects of catecholamines upon mammary contractility in rats are neurally mediated.

  title={Central effects of catecholamines upon mammary contractility in rats are neurally mediated.},
  author={F. Mena and D. Aguayo and P. Pacheco and M. Morales},
  volume={61 6},
We injected, i.e., intracerebroventricularly (ICV) or systematically, small amounts of adrenaline (ADR), noradrenaline (NA), isoproterenol (ISOP) and dopamine (DA) in urethane-anesthetized lactating rats, and determined the effects on isometrically recorded intramammary pressure (IMP) responses to exogenous oxytocin (OXY). While centrally administered ADR, NA and DA provoked increased IMP responses to OXY, the beta-adrenergic agonist ISOP induced the opposite effect. These effects were… Expand
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