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Disturbed calcium metabolism in subjects with elevated diastolic blood pressure

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Summary

Essential hypertension has been associated with disturbed calcium metabolism, but the available data are controversial. We measured parameters of calcium metabolism in groups of untreated male subjects (n = 78) with elevated diastolic blood pressure (101 ± 6 mmHg, mean ± SD) and age-matched male subjects (n=79) with low diastolic blood pressure (62 ± 4 mmHg). The participants of the study were drawn from a random population sample. Subjects with high diastolic blood pressure had significantly higher carboxy-terminal parathyroid hormone (PTH) plasma concentrations than controls with low diastolic blood pressure (median 114 vs. 43 pmol/l, P < 0.01). The 25-hydroxyvitamin D and 1,25-dihydroxyvitamin D concentrations were comparable in both groups. Individuals with high diastolic blood pressure had significantly lower total serum calcium (2.41 ± 0.10 vs. 2.47 ± 0.10 mmol/l, mean ± SD; P < 0.01). PTH concentrations were correlated with diastolic pressure (r = −0.39, P < 0.001). The data are compatible with increased parathyroid activity despite unchanged concentrations of vitamin D metabolites in human hypertension.

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Abbreviations

PTH:

parathyroid hormone

C-PTH:

carboxy-terminal parathyroid hormone

1,25(OH)2D:

1,25-di-hydroxyvitamin D

25(OH)D:

25-hydroxyvitamin D

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Reichel, H., Liebethal, R., Hense, H.W. et al. Disturbed calcium metabolism in subjects with elevated diastolic blood pressure. Clin Investig 70, 748–751 (1992). https://doi.org/10.1007/BF00180741

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