Metabolic syndrome is associated to an increased risk of low bone mineral density in free-living women with suspected os

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ORIGINAL ARTICLE

Metabolic syndrome is associated to an increased risk of low bone mineral density in free‑living women with suspected osteoporosis D. Rendina1 · L. D’Elia1 · M. Evangelista1 · G. De Filippo2   · A. Giaquinto1 · V. Abate1 · B. Barone3 · G. Piccinocchi4 · D. Prezioso3 · P. Strazzullo1 Received: 20 June 2020 / Accepted: 15 September 2020 © Italian Society of Endocrinology (SIE) 2020

Abstract Purpose  Osteoporosis (Op) and metabolic syndrome (MetS) are two common disorders showing common pathogenic patterns. This cross-sectional study was performed to evaluate if MetS and its constitutive elements are associated to an increased risk of low bone mineral density (BMD) in free-living women examined by Dual-energy X-ray absorptiometry (DXA) for suspected Op. Methods  13,182 free-living Caucasian women referring to “COMEGEN” general practitioners cooperative operating in Naples, Italy, performed a contextual evaluation of BMD by DXA and all MetS constitutive elements (systolic and diastolic blood pressure, waist circumference, serum levels of triglycerides, high-density lipoprotein cholesterol, and fasting glucose) between June 1st 2008 and May 31st 2018. Subjects aged less than 40 years or with signs or symptoms suggestive of secondary Op were excluded from the study. Results  MetS is associated to an increased risk of low BMD (Odds Ratio 1.19; 95% Confidence Interval 1.08–1.31). Among MetS constitutive elements, hypertension was associated to increased risk of low BMD, whereas high fasting glucose level/ diabetes were associated to reduced risk of low BMD. Conclusions  The significant association between Op and MetS in free-living women examined by DXA for suspected Op suggests the advisability of a contextual evaluation of both disorders in this setting. Keywords  Osteoporosis · Metabolic syndrome · Epidemiological survey · Hypertension · Diabetes

Introduction Osteoporosis (Op) and metabolic syndrome (MetS) are two common multifactorial disorders characterized by a high incidence and prevalence in the adult population worldwide [1]. Both involve high morbidity and mortality if not correctly diagnosed and accurately treated. Op, the most common metabolic bone disease worldwide, is identified by a * G. De Filippo [email protected] 1



Department of Clinical Medicine and Surgery, Federico II University, 80131 Naples, Italy

2



Assistance Publique–Hôpitaux de Paris, Hôpital Robert Debré, Service d’Endocrinologie et Diabétologie Pédiatrique, 48, Boulevard Sérurier, 75019 Paris, France

3

Department of Neuroscience, Reproductive Sciences and Dentistry, Federico II University, 80131 Naples, Italy

4

“COMEGEN” Medical Cooperative, 80126 Naples, Italy



low bone mineral density (BMD) determined by dual-X-ray absorptiometry (DXA) and predisposes affected patients to fractures [2–4]. According to Italian Ministerial Decree regulating Essential Assistance Levels (EAL), BMD determination by DXA is indicated, in men and women of any age in the presence of a major risk factor, and in postmenopausa