Abstract
The aim of the present cross-sectional epidemiological study from Tromsø, Northern Norway, was to evaluate the relation between blood pressure and serum PTH, and to examine whether this relation can be explained by a blood pressure-induced increase in urinary calcium. Ten thousand-four hundred and nineteen subjects were invited to participate and 8128 attended. Those with serum calcium outside the reference range (2.20–2.60 mmol/l), with increased serum creatinine (upper limit 120 μmol/l for men and 100 μmol/l for women) and those using antihypertensive medication were excluded. Three thousand-six hundred and twenty subjects had complete data on outcome measures. Height, weight, blood pressure, serum calcium, PTH, and creatinine were measured and smoking status recorded. A morning urine sample was collected and urinary calcium, sodium and creatinine measured. The urinary calcium/urinary creatinine ratio (Uca/Ucr) and urinary sodium/urinary creatinine ratio (Una/Ucr) were calculated. There was a significant association between both systolic and diastolic blood pressure and serum PTH. The Uca/Ucr increased with increasing blood pressure. However, the Uca/Ucr did not affect the association between blood pressure and serum PTH in a multiple linear regression model. The relationship between blood pressure and serum PTH was also seen in subjects with similar Uca/Ucr, and a negative association between serum PTH and the Uca/Ucr was found. In conclusion, blood pressure and serum PTH are associated. This association cannot be explained by the urinary calcium excretion alone. (J. Endocrinol. Invest. 29: 214–220, 2006)
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Saleh, F., Jorde, R., Svartberg, J. et al. The relationship between blood pressure and serum parathyroid hormone with special reference to urinary calcium excretion: The Tromsø study. J Endocrinol Invest 29, 214–220 (2006). https://doi.org/10.1007/BF03345542
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DOI: https://doi.org/10.1007/BF03345542