title: Coronary calcification is associated with lower bone formation rate in CKD patients not yet in dialysis treatment.
abstract: Vascular calcification is a strong prognostic marker of mortality in hemodialysis patients and has been associated with bone metabolism disorders in this population. In earlier stages of chronic kidney disease (CKD), vascular calcification also has been documented. This study evaluated the association between coronary artery calcification (CAC) and bone histomorphometric parameters in CKD predialysis patients assessed by multislice coronary tomography and by undecalcified bone biopsy. CAC was detected in 33 (66%) patients, and their median calcium score was 89.7 (0.4-2299.3 AU). The most frequent bone histologic alterations observed included low trabecular bone volume, increased eroded and osteoclast surfaces, and low bone-formation rate (BFR/BS). Multiple logistic regression analysis, adjusted for age, sex, and diabetes, showed that BFR/BS was independently associated with the presence of coronary calcification [p = .009; odd ratio (OR) = 0.15; 95% confidence interval (CI) 0.036-0.619]. This study showed a high prevalence of CAC in asymptomatic predialysis CKD patients. Also, there was an independent association of low bone formation and CAC in this population. In conclusion, our results provide evidence that low bone-formation rate constitutes another nontraditional risk factor for cardiovascular disease in CKD patients.
authors: Department of Internal Medicine, Division of Nephrology, Federal University of São Paulo, São Paulo, Brazil.
authors: Cristianne
authors: C
authors: Tomiyama
authors: Aluizio B
authors: AB
authors: Carvalho
authors: Andrea
authors: A
authors: Higa
authors: Vanda
authors: V
authors: Jorgetti
authors: Sérgio A
authors: SA
authors: Draibe
authors: Maria Eugênia F
authors: ME
authors: Canziani
mesh_terms: D001842:Bone and Bones / Q000378:metabolism*; D002114:Calcinosis / Q000150:complications*; D003324:Coronary Artery Disease / Q000150:complications* / Q000503:physiopathology; D018450:Disease Progression; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010012:Osteogenesis / Q000502:physiology; D012044:Regression Analysis; D006435:Renal Dialysis; D051436:Renal Insufficiency, Chronic / Q000150:complications* / Q000378:metabolism / Q000503:physiopathology* / Q000628:therapy; D012307:Risk Factors