Cardiovascular Characterization of DA-1 and DA-2 Dopamine Receptor Agonists in Anesthetized Rats

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Structured PICO

Population

Anesthetized rats (including intact, chlorisondamine-pretreated, nephrectomized, sham-operated, and pithed models)

Intervention

Fenoldopam (DA-1 agonist, 20 micrograms/kg/min i.v. over 15 min) and quinpirole (DA-2 agonist, 10 micrograms/kg/min i.v. over 15 min)

Comparator

Control conditions (sham-operated) and selective antagonists (S-sulpiride, SCH 23390)

Outcome

Cardiovascular and biochemical profiles (blood pressure, vascular resistance, regional blood flows, heart rate, plasma renin activity)surrogate

DA-1 and DA-2 dopamine receptor agonists exhibit distinct cardiovascular and hemodynamic profiles in rat models.

Authors

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Rat data distinguish DA-1/DA-2 agonist hemodynamics; hypothesis-generating and should not yet change clinical practice.

Cavero et al. (1987) studied this question.

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