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[Serum ionized calcium, parathormone and plasma renin activity in essential arterial hypertension]
Insights
Essential arterial hypertension is linked to lower ionized calcium levels and hyperparathyroidism. Parathormone may play a key role in developing high blood pressure, interacting with the renin system via calcium.
Area of Science:
- Cardiovascular Medicine
- Endocrinology
- Nephrology
Background:
- The calcium ion is crucial in essential arterial hypertension pathogenesis.
- Understanding calcium's role may reveal new therapeutic targets for hypertension.
Purpose of the Study:
- To investigate blood and urinary calcium, phosphorus, parathormone, and renin activity in hypertensive patients.
- To explore the relationship between these biomarkers and blood pressure levels.
Main Methods:
- Assayed blood levels of total and ionized calcium, phosphorus, parathormone, and plasma renin activity.
- Measured 24-hour urinary calcium and phosphorus excretion.
- Compared these levels between hypertensive patients and normotensive controls.
Main Results:
- Hypertensive patients exhibited reduced blood ionized calcium, hyperparathyroidism, and increased calciuria.
- A correlation was observed between parathormone levels and mean blood pressure.
- Plasma renin activity showed a connection with serum ionized calcium.
Conclusions:
- Reduced ionized calcium and hyperparathyroidism are associated with essential arterial hypertension.
- Parathormone may be a primary factor in hypertension development.
- Calcium ions potentially mediate interactions between the parathormone and renin systems.
Abstract:
Given the significance of the calcium ion in the pathogenesis of essential arterial hypertension, blood levels of total and ionised calcium, phosphorus, parathormone, blood renin activity as well as urinary calcium and phosphorus were assayed in a group of hypertensives and a comparable control group with normal blood pressure. The results showed reduced ionised calcium in the blood of the hypertensives together with hyperparathyroidism and increased calciuria. In addition, the link between parathormone and mean blood pressure levels suggests that parathormone itself play a primary role in the genesis of high blood pressure. Finally the connection between renin activity in the plasma and ionised calcium in the serum suggests that the two hormone systems are closely linked and may interact via the calcium ion.