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Endocrine 2020-Jun

Spironolactone reduces biochemical markers of bone turnover in postmenopausal women with primary aldosteronism

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Christian Adolf
Leah Braun
Carmina Fuss
Stefanie Hahner
Heike Künzel
Laura Handgriff
Lisa Sturm
Daniel Heinrich
Holger Schneider
Martin Bidlingmaier

Mots clés

Abstrait

Context: Primary aldosteronism (PA) is the most frequent form of endocrine hypertension. Besides its deleterious impact on cardiovascular target organ damage, PA is considered to cause osteoporosis.

Patients and methods: We assessed bone turnover in a subset of 36 postmenopausal women with PA. 18 patients had unilateral PA and were treated by adrenalectomy, whereas 18 patients had bilateral PA and received mineralocorticoid receptor antagonist (MRA) therapy respectively. 18 age- and BMI-matched females served as controls. To estimate bone remodeling, we measured the bone turnover markers intact procollagen 1 N-terminal propeptide, bone alkaline phosphatase, osteocalcin and tartrate resistant acid phosphatase 5b in plasma by chemiluminescent immunoassays at time of diagnosis and one year after initiation of treatment.

Study design: Observational longitudinal cohort study.

Setting: Tertiary care hospital.

Results: Compared with controls, patients with PA had mildly elevated osteocalcin at baseline (p = 0.013), while the other bone markers were comparable between both groups. There were no differences between the unilateral and the bilateral PA subgroup. One year after initiation of MRA treatment with spironolactone bone resorption and bone formation markers had significantly decreased in patients with bilateral PA. In contrast, patients adrenalectomized because of unilateral PA showed no significant change of bone turnover markers.

Conclusion: This study shows that aldosterone excess in postmenopausal women with PA is not associated with a relevant increase of bone turnover markers at baseline. However, we observed a significant decrease of bone markers in patients treated with spironolactone, but not in patients treated by adrenalectomy.

Keywords: Aldosterone; Cortisol; Hyperparathyroidism; Osteocalcin; Osteoporosis.

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