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  • Title: Association of coronary artery calcium with bone mineral density in postmenopausal women.
    Author: Xu R, Yang HN, Li YQ, Wang QF, Guo AH, Ayiti A, Chen XC, Gong R, Banu G, Jian LD, Gao Y, Sheng K, Maimti Y.
    Journal: Coron Artery Dis; 2016 Nov; 27(7):586-91. PubMed ID: 27363000.
    Abstract:
    OBJECTIVES: Atherosclerosis and osteoporosis (OP) are common diseases in elderly individuals and may share common pathogenetic mechanisms. The aim of this study was to investigate the association between bone mineral density (BMD) and coronary artery calcium (CAC) in postmenopausal women. METHODS: In this cross-sectional study, 186 postmenopausal women 50-80 years of age were included. BMD of the spine and femoral neck was measured by dual-energy X-ray absorptiometry. The coronary artery calcium score (CACS) was measured by multidetector computed tomography. RESULTS: The study included postmenopausal women aged 65.6±7.3 years, 109 of whom (58.6%) showed CAC. Thirty-three (17.7%) of the patients were found to have OP in the lumbar spine and 83 (44.6%) had osteopenia, whereas in the femoral neck, 26 patients (14.0%) had OP and 87 patients (46.8%) had osteopenia. The mean CACS was 57.6±108.3 in normal status, 89.7±143.5 in OP, and 156.4±256.9 in osteopenia at the spine (P<0.05). The mean CACS was 43.2±89.9 in normal status, 126.9±180.3 in OP, and 198.2±301.2 in osteopenia at the femoral neck (P<0.05). Multivariable logistic regression analysis showed that BMD was an independent marker for an increased risk of developing CAC in postmenopausal women. The multiple regression model showed that T-scores were the independent predictors of CACS. CONCLUSION: BMD identified on images from dual-energy X-ray absorptiometry were strongly related to multidetector computed tomography measures of CAC. This low-cost, minimal radiation technique used widely for OP screening is a promising marker of generalized coronary atherosclerosis.
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