Adragao Teresa, Herberth Johann, Monier-Faugere Marie-Claude, Branscum Adam J, Ferreira Anibal, Frazao Joao M, Dias Curto Jose, Malluche Hartmut H
Nephrology Department, Santa Cruz Hospital, Lisbon, Portugal.
Clin J Am Soc Nephrol. 2009 Feb;4(2):450-5. doi: 10.2215/CJN.01870408. Epub 2009 Jan 21.
There is increasing evidence that altered bone metabolism is associated with cardiovascular calcifications in patients with stage 5 chronic kidney disease on hemodialysis (HD). This study was conducted to evaluate the association between bone volume, turnover, and coronary calcifications in HD patients.
DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: In a cross-sectional study, bone biopsies and multislice computed tomography were performed in 38 HD patients. Bone volume/total volume, activation frequency, and bone formation rate/bone surface were determined by histomorphometry and coronary calcifications were quantified by Agatston scores.
Prevalence of low bone turnover was 50% and of low bone volume was 16%. Among the studied traditional cardiovascular risk factors, only age was found to be associated with coronary calcifications. Lower bone volume was a significant risk factor for coronary calcifications during early years of HD, whereas this effect was not observed in patients with dialysis duration >6 yr. Histomorphometric parameters of bone turnover were not associated with coronary calcifications.
Low bone volume is associated with increased coronary calcifications in patients on HD.
越来越多的证据表明,在接受血液透析(HD)的5期慢性肾病患者中,骨代谢改变与心血管钙化有关。本研究旨在评估HD患者的骨体积、骨转换与冠状动脉钙化之间的关联。
设计、地点、参与者及测量方法:在一项横断面研究中,对38例HD患者进行了骨活检和多层计算机断层扫描。通过组织形态计量学确定骨体积/总体积、激活频率和骨形成率/骨表面积,并通过阿加斯顿评分对冠状动脉钙化进行量化。
低骨转换的患病率为50%,低骨体积的患病率为16%。在研究的传统心血管危险因素中,仅发现年龄与冠状动脉钙化有关。较低的骨体积是HD早期冠状动脉钙化的重要危险因素,而在透析时间>6年的患者中未观察到这种效应。骨转换的组织形态计量学参数与冠状动脉钙化无关。
HD患者的低骨体积与冠状动脉钙化增加有关。