| Popis: |
A group of 89 apparently healthy subjects and 175 patients with essential hypertension (EH) and systolic (atherosclerotic) hypertension aged 25 to 74 years were surveyed. The healthy subjects were found to have changes in prostaglandin (PG) synthesis and metabolism: a reduction in blood plasma concentration of PGE2 and its urinary excretion, a rise in plasma PGF2 level, and, generally, increase in the pressor and decrease in depressor potentials of the PG system. In the EH patients, changes in the PG synthesis and metabolism were unidirectional and had quantitative variations. The differences in the PG levels of healthy and EH-afflicted individuals were found to become less marked with age. The patients with systolic hypertension exhibited higher plasma prostacyclin concentrations as compared to the age-matching control, which is evidence of a lower pressor potential of the PG system than that of the EH patients. The nature and magnitude of changes in the PG system play a certain role in blood pressure formation and in development of the hemodynamic variant of arterial hypertension. |
