Abstract | AIMS: Early detection of individuals with Type 2 diabetes mellitus or hypertension at risk for micro- or macroalbuminuria may facilitate prevention and treatment of renal disease. We aimed to discover plasma and urine metabolites that predict the development of micro- or macroalbuminuria. METHODS: Patients with Type 2 diabetes (n = 90) and hypertension (n = 150) were selected from the community-cohort 'Prevention of REnal and Vascular End-stage Disease' (PREVEND) and the Steno Diabetes Center for this case-control study. Cases transitioned in albuminuria stage (from normo- to microalbuminuria or micro- to macroalbuminuria). Controls, matched for age, gender, and baseline albuminuria stage, remained in normo- or microalbuminuria stage during follow-up. Median follow-up was 2.9 years. Metabolomics were performed on plasma and urine. The predictive performance of a metabolite for albuminuria transition was assessed by the integrated discrimination index. RESULTS: In patients with Type 2 diabetes with normoalbuminuria, no metabolites discriminated cases from controls. In patients with Type 2 diabetes with microalbuminuria, plasma histidine was lower (fold change = 0.87, P = 0.02) and butenoylcarnitine was higher (fold change = 1.17, P = 0.007) in cases vs. controls. In urine, hexose, glutamine and tyrosine were lower in cases vs. controls (fold change = 0.20, P < 0.001; 0.32, P < 0.001; 0.51, P = 0.006, respectively). Adding the metabolites to a model of baseline albuminuria and estimated glomerular filtration rate metabolites improved risk prediction for macroalbuminuria transition (plasma integrated discrimination index = 0.28, P < 0.001; urine integrated discrimination index = 0.43, P < 0.001). These metabolites did not differ between hypertensive cases and controls without Type 2 diabetes. CONCLUSIONS:
Type 2 diabetes-specific plasma and urine metabolites were discovered that predict the development of macroalbuminuria beyond established renal risk markers. These results should be confirmed in a large, prospective cohort.
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Authors | M J Pena, H J Lambers Heerspink, M E Hellemons, T Friedrich, G Dallmann, M Lajer, S J L Bakker, R T Gansevoort, P Rossing, D de Zeeuw, S S Roscioni |
Journal | Diabetic medicine : a journal of the British Diabetic Association
(Diabet Med)
Vol. 31
Issue 9
Pg. 1138-47
(Sep 2014)
ISSN: 1464-5491 [Electronic] England |
PMID | 24661264
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Copyright | © 2014 The Authors. Diabetic Medicine © 2014 Diabetes UK. |
Chemical References |
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Topics |
- Aged
- Albuminuria
(metabolism, physiopathology)
- Biomarkers
(metabolism)
- Case-Control Studies
- Diabetes Mellitus, Type 2
(metabolism, physiopathology)
- Diabetic Nephropathies
(metabolism, physiopathology)
- Early Diagnosis
- Female
- Glomerular Filtration Rate
- Humans
- Hypertension
(metabolism, physiopathology)
- Male
- Middle Aged
- Predictive Value of Tests
- Prospective Studies
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