Bone fragility, sarcopenia and cardiac calcifications in an elderly population: a preliminary study

Abstract

Cardiovascular disease, osteoporosis and sarcopenia are very common age-related conditions. This study aimed at investigating the relationships of cardiac calcifications, as assessed by using GCCS with BMD, fragility fractures and sarcopenia in elderly subjects. In a cohort of 106 subjects (age 70.4 ± 5.8 yrs) we measured lumbar (BMD-LS), femoral BMD (femoral neck: BMD-FN, total femur: BMD-TH) and body composition (BMD-WB) with Dual-energy X-ray Absorptiometry (DXA) method. We also evaluated the presence of sarcopenia on the basis of the EWGSOP Consensus. All subjects, simultaneously, underwent to a transthoracic color doppler echocardiography exam to assess the presence of cardiac calcifications. The degree of non coronaric cardiac calcifications was evaluated using the Global Cardiac Calcium Score (GCCS). The degree of cardiac calcification assessed by GCCS was significantly higher in osteoporotic patients (p < 0.001). Furthermore, an inverse correlation emerged between BMD and GCCS, statistical significance was found at lumbar spine and femoral sub-regions in female population (p < 0.01). Moreover by dividing population according to the presence of fragility fractures, we observed that GCCS values were significantly higher in subjects with fractures in respect of non-fractured ones (p < 0.05). Multiple regression models showed that BMD-LS and BMD-FT were independently associated with cardiac calcification. GCCS values were significantly associated with BMI and ASMM in women (p < 0.01 and p < 0.05, respectively) and with handgrip strength in men (p < 0.05). Our data confirm the presence of a relationship between cardiac calcifications and decreased BMD values. It's also the first study that relates sarcopenia and valvular calcifications.