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Mineral metabolism and inflammation: factors related to left ventricular hypertrophy in patients with diabetic nephropathy
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Left ventricular hypertrophy (LVH) is an important risk factor for cardiovascular disease in patients with diabetic nephropathy (DN) and is an independent predictor of mortality in patients with chronic kidney disease (CKD). The aim of this study was to evaluate the association of LVH with mineral metabolism and inflammation in a population of patients with DN. In an observational study were included 119 type 2 diabetic patients with CKD stages 3 and 4. The population was divided into two groups, according to the presence of LVH: group 1 (G-1) with LVH (left ventricular mass index (LVMI) > 125 g/m2 in male patients and LVMI > 110 g/m2 in female patients) and group 2 (G-2) without LVH (LVMI ? 125 g/m2 in male patients and LVMI ? 110 g/m2 in female patients). The patient characteristics of each group were compared regarding several biological and laboratory parameters. Patients with LVH displayed lower values of estimated glomerular filtration rate (eGFR) (p = 0.0001) and albumin (p = 0.046), and higher levels of phosphorus (p = 0.0001), intact parathyroid hormone (iPTH) (p = 0.0001), insulin resistance (HOMA-IR) (p = 0.0001) and interleukin-6 (IL-6) (p = 0.0001), compared with patients without LVH. In a logistic regression model, phosphorus (odd ratio (OR) = 1.825 (1.075-4.414), p = 0.038), iPTH (OR = 1.991 (1.098-3.000), p = 0.004) and IL-6 (OR = 3.538 (1.863-6.719), p = 0.0001) were independently related to LVH. In a multiple linear regression model, phosphorus (r = 0.602, p = 0.038), iPTH (r = 1.009, p = 0.044) and IL-6 (r = 1.264, p = 0.0001) were positively related to LVMI. Phosphorus, PTH and IL-6 were related to LVH in our diabetic population with CKD stages 3 and 4
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Sociedade Portuguesa de Nefrologia