Abstract
Adrenomedullin, the recently described vasodilator that exhibits potent hypotensive actions when administered systemically, is also found in the central nervous system, suggesting a role for ad- renomedullin as a neurohormone. However, only a limited number of studies have examined the central effects of adrenomedullin. There- fore, we have examined the integrative hemodynamic, renal, and hormonal effects of intracerebroventricular (ICV) adrenomedullin in conscious sheep. Eight surgically prepared sheep received ICV infu- sions of adrenomedullin at two doses (2 ng/kgzmin followed immedi- ately by 20 ng/kgzmin each for 90 min) in a vehicle-controlled study. Water deprivation for 48 h before control infusion resulted in sheep drinking 2617 6 583 ml in the 90-min period following reintroduction

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