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ID: <

10670/1.s8bg0s

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Hyperhomocysteinemia is independently associed with albuminuria in the population-based CoLaus study

Abstract

homocysteine is a potentially atherogenic molecule and is considered an independent risk factor for cardiovascular diseases. For patients with chronic kidney disease or generally with renal function reduced the level of homocysteine in serum is high. Uric acid is associated with an increased risk of kidney disease and predicts mortality for patients with chronic kidney disease. The aim of this study was to assess the association between high serum levels of homocysteine is the presence of reduced kidney function, expressed as reduced glomerular filtration or albuminuria in a selection of the Lausanne population. We also investigated the effect of uric acid on this relationship. In order to assess whether the association between homocysteine is albuminuria can be causative, we have at the same time investigated the combination entry-albuminuria is the polymorphism of the methylennetetrafolate reductase gene (MTHFR) strongly correlated with serum levels of homocysteine. The CoLaus study is cross-cutting and population-based. It represents a random, unstratified selection of the general population of the city of Lausanne, Switzerland, aged 35-75 (n = 56.694). 5913 people were included in the analysis. The prevalence of albuminuria increases in the increasing serum levels of homocysteine. Uric acid is associated with the serum concentration of homocysteine. Hyperhomocysteinaemia and increased serum uric acid levels are associated with albuminuria, independent of hypertonia and diabetes. In this study based on a large population, the association between elevated serum levels of homocysteine and the increased prevalence of albuminuria is independent of the glomerular function, indicating that this combination is not simply the consequence of reduced kidney function. Hyperhomocysteinaemia is associated with a double risk for albuminuria, which is similar to the risk associated with hypertonia or type 2 diabetes. This association is independent of uric acid. This result suggests that hyperhomocysteinaemia is a marker independent of renal dysfunction. Individuals with MTHFR polymorphism associated with high serum concentrations of homocysteine are associated with an increased risk for albuminuria. All these results support the assumption that homocysteine causes kidney damage.

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