The relationship between the Spine Deformity Index, biochemical parameters of bone metabolism and vascular calcifications: results from the Epidemiological VERtebral FRACtures iTalian Study (EVERFRACT) in dialysis patients

Author(s):  
Maria Fusaro ◽  
Maurizio Gallieni ◽  
Marianna Noale ◽  
Giovanni Tripepi ◽  
Davide Miozzo ◽  
...  

AbstractThe Spine Deformity Index (SDI) is a measure of vertebral fractures (VFs), providing information on both their number and severity.We evaluated the relationships between SDI and clinical, biochemical and arterial calcification parameters in 387 hemodialysis (HD) patients. VFs, assessed by quantitative vertebral morphometry, and vascular calcifications were identified in the same lateral spinal X-ray. To improve the detection of fracture severity, we created a corrected SDI (c-SDI), by dividing SDI for the number of VFs. We assessed routine biochemistry, bone-Gla-protein (BGP), undercaboxylated BGP (ucBGP), and matrix-Gla-protein (MGP).VFs prevalence was 55.3%. HD patients with a SDI >1 were more frequently males (p<0.05), and had lower BGP (p<0.01). Patients with a c-SDI >1 had higher LDL-cholesterol (p<0.05) and lower ucBGP (p<0.05) and MGP (p<0.05). Calcifications of the abdominal aorta (AAoC) were more frequent in patients with SDI >1 (p<0.05) and with c-SDI >1 (p<0.05). Multivariate logistic regression showed that male sex (OR 1.86, CI 1.20–2.91), age (OR 1.03, CI 1.01–1.05) and albumin ≥3.5 g/dL (OR 0.54, CI 0.31–0.93) were predictors of a SDI >1. Age (OR 1.05, CI 1.03–1.07), LDL-cholesterol (OR 1.74, CI 1.04–2.92) and ucBGP (OR 0.35, CI 0.18–0.70) were associated with c-SDI >1.We conclude that the severity of VFs was associated with age, atherogenic factors and bone metabolism markers.

2018 ◽  
Vol 7 (1) ◽  
pp. 32-36 ◽  
Author(s):  
Leila Mahmoodnia ◽  
Sara Beigrezaei ◽  
Mohammad Reza Tamadon ◽  
Tina Jafari ◽  
Marzieh Kafeshani ◽  
...  

2020 ◽  
Vol 35 (Supplement_3) ◽  
Author(s):  
Maria Fusaro ◽  
Andrea Aghi ◽  
Pascale Khairallah ◽  
Maurizio Gallieni ◽  
Mario Gennaro Cozzolino ◽  
...  

Abstract Background and Aims Sevelamer (S) is a phosphate binding drug used to treat hyperphosphatemia in patients with CKD. Our aim was to evaluate the hypothesis that the use of (S) could interfere with Vitamin K absorption in hemodialysis (HD) patients of VIKI study. Method We tested this hypothesis in VIKI, a cross-sectional study of 387 hemodialysis patients, we established the prevalence of vitamin K deficiency and to assessed the relationship between vitamin K status, vertebral fractures, vascular calcification. We determined serum concentrations of vitamin 25(OH)D; alkaline phosphatase (ALP); vitamers K1, MK4, MK5, MK6, MK7; osteocalcin (BGP) and Matrix Gla Protein (MGP). We highlighted that MK4 deficiency was the strongest predictor of aortic calcification (OR, 2.82; 95% CI, 1.14–7.01) while vitamin K1 deficiency was the strongest predictor of vertebral fractures fractures (OR: 2.94; 95% CI, 1.38–6.26). Results 163 of 387 patients (42.1%) were treated with Sevelamer. There were no differences in levels of 25(OH)D, K1, MK5, MK6 and MK7 among patients treated with and without Sevelamer. Remarkably, the prevalence of MK4 deficiency was higher in Sevelamer treated patients (13.5% vs 5.4%, p=0.005). Sevelamer treated patients also had higher median levels of ALK (89 UI/L vs 77.5 UI/L, p=0.001) and total BGP (210 mcg/L vs 152 mcg/L, p=0.002) and lower median levels of total MGP (16.4 nmol/L vs 20.3 nmol/L, p=0.037) (Table 1 and Figure 1). In multivariable logistic regression, the odds ratio of MK4 deficiency (dependent variable) in patients treated with compared to without Sevelamer was ∼3-fold higher (OR: 2.64, 95% CI: 1.25-5.58, p=0.011) after adjustment for confounders of Vitamin K levels, including older age, previous myocardial infarction, type of HD, ALP, PTH, MGP, BGP, cholesterol and albumin. Conclusion These data support the hypothesis that Sevelamer could interfere with MK4 absorption in HD patients. Longitudinal interventional studies are needed to prove the causal nature of these associations.


Author(s):  
Mirzaie Masoud ◽  
Josefina Kusnirova ◽  
Johann Philipp Addicks ◽  
Sheila Fatehpur

In vascular calcification, as a physiological process, intimal arterial calcification (IAC) associated with increased cardiovascular risk is distinguished from medial arterial calcification (MAC) localized mainly in the lamina elatica interna, which are not only based on different pathophysiological mechanisms. They also lead to different cardiovascular diseases. While intimal arterial calcification involves inflammation and lipid accumulation, a calcification process similar to desmal ossification plays the main role in medial arterial calcification. In this context, the phenotype change of smooth muscle cells from muscular type to synthesizing form in the tunica media is considered to be of great importance, which puts the matrix GLA protein, mainly involved in bone metabolism, in the center of interest. The present review work elucidates the molecular biological basis of interaction of matrix GLA protein subunits in the pathogenesis of vascular calcifications and the influence of diet on the consequences of underactivation of matrix GLA protein.


2020 ◽  
Vol 93 (2) ◽  
pp. 65-76 ◽  
Author(s):  
Caixia Yin ◽  
Chen Cheng ◽  
Jing Wang ◽  
Lina Zhang ◽  
Yogendranath Purrunsing ◽  
...  

2020 ◽  
pp. 39-43
Author(s):  
A. V. Voronkina ◽  
T. A. Raskina ◽  
M. V. Letaeva ◽  
Yu. V. Averkieva ◽  
O. S. Malyshenko ◽  
...  

The development of atherosclerosis is closely related to the calcification of the vessel intima and fibrous plaques, being a complex and multifactorial process, in which the markers of bone formation and resorption play an important role. Objective. To study the biochemical markers of bone metabolism in men with stable coronary heart disease (CHD). Material and methods. The study included 102 men with verified CHD. Data were evaluated by densitometry, coronary angiography, multispiral computed tomography, color duplex scanning of brachiocephalic arteries, serum lipids (total cholesterol, triglycerides [TG], high-density [LHD] and low-density lipoprotein cholesterol), concentrationsin the blood of osteocalcin (OC), bone alkaline phosphatase (BAP), cathepsin K and C-telopeptides (CTx). Results. Concentrations of BAP, cathepsin K and CTx in patients with CHD were significantly higher than in men without CHD. The concentration of OC in men with normal bone mineral density was significantly lower than in patients with osteopenic syndrome. There was a direct correlation between OC and antiatherogenic HDL cholesterol and the inverse correlation between OC and TG, CTx and TG. There was no correlation between the level of bone remodeling markers and coronary artery (CA) lesion variant and the severity of coronary atherosclerosis on SYNTAX scale. The correlation analysis did not reveal the connection of biochemical markers of bone metabolism with the severity of coronary atherosclerosis and calcification and thickness of intima-media complex of carotid arteries. Absolute values of bone formation indices (BAP, OC) were significantly higher in patients with severe СA calcification than in patients without signs of calcification. Summary. Increased rates of osteogenesis and osteoresorption characterize the accelerated process of bone metabolism and indicate in favor of high rates of bone loss in men with CHD, which confirms the likelihood of common pathophysiological mechanisms of bone resorption and arterial calcification.


Sign in / Sign up

Export Citation Format

Share Document