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Updated: Aug 17, 2026
Non-invasive Assessment of Microvascular and Endothelial Function
Published on: January 29, 2013
Basal platelet intracellular free calcium concentrations in untreated hypertensive patients and normotensive controls
1University Department of Materia Medica, Stobhill General Hospital, Glasgow, UK.
Insights
Essential hypertension patients showed no significant difference in basal platelet intracellular free calcium. However, a weak positive correlation was found between blood pressure and this calcium level, suggesting a small pathophysiological role.
Area of Science:
- Cardiovascular Physiology
- Hypertension Research
- Cellular Biology
Background:
- Essential hypertension is a complex condition with multifactorial origins.
- Platelet intracellular calcium is implicated in various physiological processes.
- Altered calcium handling in platelets may contribute to hypertension.
Purpose of the Study:
- To investigate basal platelet intracellular free calcium concentrations in essential hypertension.
- To determine the relationship between platelet calcium levels and blood pressure in hypertensive individuals.
Main Methods:
- Measurement of basal platelet intracellular free calcium concentrations using spectrofluorometry.
- Comparison between 18 untreated essential hypertensive patients and 18 normotensive controls.
- Correlation analysis between blood pressure (systolic and diastolic) and platelet calcium levels.
Main Results:
- No significant difference in mean basal platelet intracellular free calcium concentrations between hypertensive and normotensive groups.
- A weak but statistically significant positive correlation observed between systolic blood pressure and platelet calcium.
- A weak but statistically significant positive correlation observed between diastolic blood pressure and platelet calcium.
Conclusions:
- A real, though quantitatively small, relationship exists between platelet intracellular free calcium and blood pressure in essential hypertension.
- This relationship may hold pathophysiological significance in the development and maintenance of hypertension.
- Further research is warranted to elucidate the precise mechanisms involved.
Abstract:
Basal platelet intracellular free calcium concentrations were measured in 18 untreated essential hypertensive patients and 18 age and sex matched normotensive controls. No significant difference was observed between the mean platelet intracellular free calcium concentrations for these two groups. There was a weak, but significant positive correlation between both systolic and diastolic BP and basal platelet intracellular free calcium concentration. These results suggest there is a real, but quantitatively small relationship between platelet intracellular free calcium levels and BP in essential hypertension which may be of pathophysiological significance in the genesis and maintenance of hypertension.
