Document Detail


Relationship between Serum Magnesium Levels and Cardiovascular Events in Chronic Kidney Disease Patients.
MedLine Citation:
PMID:  22948239     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Background: Magnesium is an essential ion for all living cells because over 300 enzymes require the presence of magnesium for their catalytic action. To date, no group has evaluated magnesium as a cardiovascular risk factor in chronic kidney disease (CKD) subjects, in which closely interrelated factors and potential confounders such as endothelial dysfunction, insulin resistance (the homeostasis model assessment (HOMA) index) and inflammation (expressed as serum C-reactive protein (CRP) levels) were also considered. Methods: Between March 2006 and December 2010, 283 CKD patients were followed up for time-to-event analysis until the occurrence of fatal or nonfatal cardiovascular events. Endothelium-dependent vasodilatation (flow-mediated dilatation; FMD) and endothelium-independent vasodilatation (nitroglycerin-mediated dilatation) of the brachial artery were assessed noninvasively using high-resolution ultrasound. Results: From the univariate analysis of FMD, it appears that a higher magnesium level is associated with less endothelial dysfunction. When a multivariate analysis was performed, magnesium and estimated glomerular filtration rates (eGFR) maintained a strong positive correlation with FMD, supporting the hypothesis that higher levels of magnesium may protect against endothelial damage. In univariate Cox proportional hazards models, FMD, magnesium, high sensitivity CRP, the HOMA index, eGFR, comorbid diabetes, hypertension, smoking status, systolic blood pressure, serum phosphate and intact parathormone emerged as significant predictors for cardiovascular outcomes. Kaplan-Meier curves showed significantly higher cardiovascular mortality rates in CKD patients whose serum magnesium levels were below 2.05 mg/dl. Conclusions: This observational cohort study showed that magnesium may be an independent predictor of future cardiovascular outcomes and is the first study demonstrating such a role in etiologically diagnosed CKD patients, across different stages.
Authors:
Mehmet Kanbay; Mahmut Ilker Yilmaz; Mugurel Apetrii; Mutlu Saglam; Halil Yaman; Hilmi Umut Unal; Mahmut Gok; Kayser Caglar; Yusuf Oguz; Mujdat Yenicesu; Hakki Cetinkaya; Tayfun Eyileten; Cengizhan Acikel; Abdulgaffar Vural; Adrian Covic
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-8-30
Journal Detail:
Title:  American journal of nephrology     Volume:  36     ISSN:  1421-9670     ISO Abbreviation:  Am. J. Nephrol.     Publication Date:  2012 Aug 
Date Detail:
Created Date:  2012-9-5     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8109361     Medline TA:  Am J Nephrol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  228-237     Citation Subset:  -    
Copyright Information:
Copyright © 2012 S. Karger AG, Basel.
Affiliation:
Department of Nephrology, Gülhane School of Medicine, Ankara, Turkey.
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