Clinical science and molecular medicine. Supplement · 1976
Anti-hypertensive effect of metoprolol in spontaneously hypertensive rats.
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Ljung B, Ablad B, Drews L, Fellenius E, Kjellstedt A, Wallborg M
Аннотация
1. Oral and intravenous administration of metoprolol to adult spontaneously hypertensive rats (SHR) with established hypertension lowered arterial blood pressure within 4 days of treatment. 2. Steady state plasma concentrations of metoprolol were similar to those of patients during anti-hypertensive treatment with this drug. 3. The neuroeffector function of portal veins of SHR treated orally for 14 days or intravenously for 4 days was not impaired when studied in vitro. This is in contrast to previous findings after long-term treatment. 4. It is concluded that the anti-hypertensive effect of metoprolol in SHR in many respects resembles that observed in patients. It is suggested that impairment of vasomotor nerve control may contribute to the anti-hypertensive effect of beta-adrenoreceptor antagonists.