RESUMO
Hypertension is an important public health challenge worldwide, 95% of which are primary or essential hypertension, where the exact causes are not known. It has been thought that magnesium level has an association with hypertension and plays role in the pathogenesis of essential hypertension. Several evidences suggested that decreased magnesium level may be a significant modifiable risk factor for developing essential hypertension. To explore the relationship between serum and erythrocyte magnesium level with blood pressure, this case control study was carried out in the Department of Biochemistry, Bangabandhu Sheikh Mujib Medical University (BSMMU), during the year 2006. Thirty offsprings of essential hypertensive parents were taken as cases and 30 age and sex-matched offsprings of normotensive parents were taken as controls. Serum & erythrocyte magnesium were measured by colorimetric Calmagite method. Significantly lower serum magnesium level (mg/dl) was found in cases than that of controls (1.90±0.210 vs 2.13±0.366, p<0.01) and erythrocyte magnesium (mg/dl) was also found to be lower in cases when compared with that of controls (4.46±0.699 vs 5.43±0.775, p<0.001). Mean systolic and diastolic blood pressure were found to be significantly higher (p<0.01) in cases as compared to controls. Though it is difficult to draw any definite conclusion, it may be assumed that, a hereditary predisposition to hypertension may be related to magnesium metabolism and magnesium deficiency might have a role in the future development of hypertension in the offsprings of essential hypertensive parents.