Management of arterial hypertension

The influence of antihypertensive treatment over the incidence of cerebral vascular disease

The incidence of stroke in a group of 499 treated hypertensive patients was closely related to the adequacy of control of hypertension. This trend was independent of the level of diastolic blood pressure at presentation, and differed markedly from the incidence of myocardial infarction and angina pectoris which did not vary with adequacy of control.

Pressor substances in arterial hypertension. V. Chemical and pharmacological characteristics of pherentasin

Some pharmacological and chemical qualities of pherentasin, a vasoconstrictor substance procured from human hypertensive blood, were studied by a new assay method using the spirally cut rabbit aorta. Of a number of drugs tested, six metal-binding agents including hydralazine inactivated the active principle. The material was stable in acid but not in alkali. It was destroyed by drying. Chemical analysis and inactivation procedures suggested the presence of primary amine and considerable sulfur; a peptide linkage was suspected because of inactivation by manganous ion and papain. The material was remarkably resistant to most pharmacological agents and appeared to act directly on smooth muscle.