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Bucindolol in essential hypertension.

J L Reid, J Curzio, J Vincent

    International Journal of Clinical Pharmacology Research
    |January 1, 1985
    PubMed
    Summary
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    Bucindolol, a new nonselective beta blocker, effectively lowered blood pressure in patients with essential hypertension. Long-term use demonstrated significant beta blockade without alpha blockade, with some patients experiencing transient muscle-related side effects.

    Area of Science:

    • Pharmacology
    • Cardiovascular Medicine

    Background:

    • Essential hypertension remains a significant global health concern.
    • Development of novel antihypertensive agents with improved efficacy and safety profiles is crucial.

    Purpose of the Study:

    • To evaluate the efficacy and safety of bucindolol, a novel nonselective beta blocker.
    • To assess the hemodynamic and hormonal effects of bucindolol in patients with essential hypertension.

    Main Methods:

    • Short-term and six-month dosing study in eight patients with essential hypertension.
    • Acute and chronic administration of bucindolol (100-400 mg/day).
    • Measurement of blood pressure, heart rate, plasma noradrenaline, plasma renin activity, and response to isoprenaline and phenylephrine.

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    Main Results:

    • Bucindolol acutely lowered systolic and diastolic pressure without affecting heart rate or causing orthostatic hypotension.
    • Long-term dosing resulted in modest blood pressure reduction with a hypotensive effect duration of 6-10 hours.
    • Marked nonselective beta blockade was observed, but no alpha-1 blockade. Six patients showed transient increases in plasma creatinine phosphokinase, possibly muscle-related.

    Conclusions:

    • Bucindolol is an effective nonselective beta blocker for treating essential hypertension.
    • Its antihypertensive effects may involve additional vasodilator properties not mediated by alpha blockade.
    • Potential for transient, muscle-related side effects should be monitored.