Lege Artis Medicinae

[The beta-adrenoceptor blocking drugs]

KÉKES Ede1

NOVEMBER 30, 1992

Lege Artis Medicinae - 1992;2(11)

[The beta-blockers have been primary in cardiovascular pharmacology since the 1960's. Clinical experiences in the last 25 years have confirmed that the beta-adrenergic blockade is essential in treating the different forms of angina pectoris. Hypertension, hypertrophic cardiomyopathy, and all situations including acute myocardial infarction and some rhythm disturbances qualified by sympathetic overdrive. The beta-blockers have been shown in large scale clinical trials to reduce the cardio vascular morbidity and mortality associated with hypertension and post-infarction period. The possibility of using them as a combined therapy with a great number of other drugs without any difficulties, is very important. Toxicity is rare with beta-blockers and the side effect profile is generally good. There fore, there is no question that the risk/benefit ratio is weighted toward the benefit. Nevertheless there are some problems such as hemodynamic profile, and effects on lipid metabolism, etc. Research has advanced from the first generation to the third generation with direct or indirect effects on the vascular bed, producing strong vasodilation. Because of the above mentioned facts, it is essential to know correctly the pharmacological effects and precise pharmacokinetics, of the beta-blockers.]

AFFILIATIONS

  1. Orvostovábbképző Egyetem II. Belgyógyászati Klinika Budapest

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[On the basis of a case report, the clinical picture, pathologic characteristics and possible histogenesis of ovarian strumal carcinoid are discussed. A 3 mm strumal carcinoid, i.e. thyroid tissue intimately mixed with a calcitonin-secreting neuroectodermal tumour, was found in a mature ovarian cystic teratoma of a 38 year old woman. Although the thyroid component demonstrated a typical normal light microscopic appearance, no thyroglobulin and thyroxine were found immunohistochemically. Immunoreactive calcitonin was demonstrated within the tumour cells, even in the transitional zone of the biphasic tissue elements. No amyloid was detected. The argentaffin and argyrophilic reactions were negative. The close relationship between functionally imperfect thyroid tissue and a neuroendocrine marker-secreting tumour seems to be concordant with the theory of the existence of a pluripotential stem cell capable of differentiating multidirectionally.]

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