The effect of timolol versus propranolol on hypertension, hemodynamics, and plasms renin activity was evaluated in 20 men. After two weeks of placebo, 11 men received timolol 30 to 60 mg daily, and nine men received propranolol, 240 to 480 mg daily, for five weeks in a double-blind randomized study. The 20 men then received placebo again for two weeks. Right heart catheterization was performed ...

Gastro-oesophageal variceal haemorrhage is one of the most dreadful complications of portal hypertension and can be controlled with vasoconstrictors. Nevertheless, sympathetic tone abnormality and vascular hyporesponsiveness in portal hypertension may impede the haemostatic effects of vasoconstrictors. Propranolol, a β-blocker binding the G-protein-coupled adrenoceptor, is a portal hypotensive ...

The beta-adrenergic antagonist propranolol has been found to inhibit platelet aggregation. We investigated the possibility that propranolol exerts this action by stimulating the synthesis or enhancing the antiaggregatory activity of prostaglandin (PG) I2. The media from cultures of human endothelial cells inhibited thrombin-induced platelet aggregation, an effect attributed to PGI2 production b...

The objective of the present study was to investigate the use of propranolol-magnesium aluminium silicate intercalated complexes as drug reservoirs in hydroxypropylmethylcellulose tablets. The matrix tablets containing the complexes were prepared and characterised with respect to propranolol release and were subsequently compared with those loading propranolol or a propranolol-magnesium alumini...

Targeting of the vascular endothelium compartment explains, in part, the therapeutic efficacy of the nonselective β-adrenergic antagonist propranolol against common endothelial tumors such as hemangiomas. In vitro, the antiangiogenic biological activity of propranolol was shown to inhibit human brain microvascular endothelial cell tubulogenesis. However, possible interference of propranolol wit...

  Since the first report in 1977, many studies have been carried out to determine the efficacy of beta- blockers such as propranolol for the treatment of violent  and aggressive behaviour. Propranolol has also  been used in the treatment of dementia, attending- deficit disorder, schizophrenia, personality disorders, Korsakoff,s psychosis, posttraumatic stress disorder, profound mental retardat...

Antecedentes: los hemangiomas infantiles son tumores vasculares benignos más frecuentes en la infancia, siendo su localización habitual cabeza y el cuello, representando 50 % de las masas que afectan a glándula parótida. Debido al rápido crecimiento expansivo estas lesiones, pueden aparecer complicaciones significativas, como pérdida función del órgano o desfiguración permanente, por lo interve...

The capacity of the vasodilating drugs, minoxidil and hydralazine, for inducing renin release was characterized in rats according to chronology and dose response. Propranolol inhibition of this renin release was also characterized and related to serum levels of propranolol. Minoxidil and hydralazine (1.0 mg/kg) induced sevenfold elevations of serum renin activity. Treatment with propranolol, re...

The inhibitory effect of (+/-) propranolol 1.69 x 10(-4)-1.69 x 10(-7) mol litre-1 on normal and atypical plasma cholinesterase variants was investigated. The atypical enzyme is less sensitive to inhibition by (+/-) propranolol or either of its enantiomorphs than the usual enzyme. Propranolol 8.45 x 10(-6) mol litre-1 was used as differential inhibitor of 643 plasma samples from individuals of ...

Nine patients with stable angina (group 1) underwent maximal treadmill stress testing and thallium-201 (201T1) myocardial scintigraphy after intravenous propranolol hydrochloride, and after placebo. Though seven of the nine patients exercised longer after propranolol than after placebo, this difference did not reach statistical significance. Propranolol, however, significantly reduced the mean ...