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  • Title: Vitamin D levels and other biochemical parameters of mineral bone disorders and their association with diastolic dysfunction and left ventricular mass in young nondiabetic adult patients with chronic kidney disease.
    Author: Sonkar SK, Bhutani M, Sonkar GK, Pandey SK, Chandra S, Bhosale V.
    Journal: Saudi J Kidney Dis Transpl; 2017; 28(4):758-763. PubMed ID: 28748877.
    Abstract:
    Cardiovascular disease (CVD) is the leading cause of morbidity and mortality in patients with end-stage renal disease. Chronic kidney disease (CKD)-associated cardiovascular mortality is more prevalent in those with diastolic heart failure and is an early predictor, while increased left ventricular mass (LVM) is a strong independent risk factor. Hypovitaminosis D is extensively being studied as a nontraditional risk factor for CVD. The aim of the present study is to look at the association of Vitamin D and other parameters of mineral bone disorder (MBD) with diastolic dysfunction and LVM in nondiabetic young adult patients with CKD. This was a hospital-based, cross-sectional observational study. Groups I and II comprised nondiabetic predialysis CKD patients (stage 4 and 5) and healthy controls, respectively. Groups IA and IB comprised cases with and without diastolic dysfunction, respectively. Vitamin D level was measured by enhanced chemiluminescence method and intact parathyroid hormone (iPTH) by electrochemiluminescence method. Parameters for diastolic function and LVM were assessed by Doppler echocardiography, tissue Doppler imaging, and M-mode echocardiography. Vitamin D level was significantly lower in Group I as compared to Group II. Diastolic dysfunction was present in 48.8% of the cases and was significantly associated with serum phosphorus and calcium-phosphorous product, but not with Vitamin D level. A statistically significant positive correlation between LVM and iPTH was found in our study. Hyperphosphatemia and high calcium-phosphorous product can be a better early predictor of diastolic dysfunction than Vitamin D while secondary hyperpara-thyroidism with increased LVM may be a bad prognostic marker.
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