TABLE 1

Circulating Catecholamine Levels

CatecholamineControls (n = 8)SP (n = 6)NEP1 (n = 6)NEP2 (n = 6)
NE (ng/mL)0.60 ± 0.223.22 ± 0.577.01 ± 0.61*4.63 ± 0.70†
Epinephrine (ng/mL)1.86 ± 0.312.32 ± 0.183.25 ± 0.41‡3.20 ± 0.42‡

  • ↵* P < 0.0001, NEP1, NEP2 vs. SP.

  • ↵† P < 0.01, saline pump group vs. NE pump group.

  • ↵‡ P < 0.001, saline pump group vs. NE pump group.

  • SP = saline pump group; NEP1 = NE pump group, rats killed immediately after stopping NE infusion; NEP2 = rats killed 1 h after stopping NE perfusion.