Abstract | OBJECTIVE:
Hypertension is an important cause of end-stage renal disease. Development of microalbuminuria is the first clinical sign of renal dysfunction, progressing to macroalbuminuria and eventually resulting in end-stage renal disease ( ESRD). Markers that could predict the development of microalbuminuria or macroalbuminuria beyond traditional risk markers would allow for earlier intervention and better prevention of ESRD. We investigated in a case-control study whether circulating levels of the micronecrosis marker high-sensitivity troponin T (hs- TnT) add to predicting the development of microalbuminuria or macroalbuminuria in hypertensive patients and performed a replication study in type 2 diabetic individuals (T2DM). METHODS: Cases and controls were extracted from a large (N = 8592) general population cohort with long-term follow-up and repeated measurement of albuminuria (PREVEND-study). Cases were defined by transition in albuminuria stage, that is, from normoalbuminuria to microalbuminuria or from microalbuminuria to macroalbuminuria (average follow-up 2.8 years). Controls with stable albuminuria were pair-matched for age, sex, and albuminuria-status. Hs- TnT was measured at baseline in 75 case/control pairs with hypertension and 33 case/control pairs with T2DM. RESULTS: Prior to transition in albuminuria, hs- TnT was higher in cases than in controls [6.6 (3.1-11.6) vs. 5.3 (2.9-8.6) pg/ml, P = 0.05]. The odds for transition in albuminuria increased significantly per SD increase in hs- TnT [2.2 (1.2-4.3), P = 0.02]. In addition, hs- TnT improved prediction of albuminuria transition, with significant increases in integrated discrimination improvement of 0.048, P = 0.02. Similar results were found in the T2DM case-control cohort. CONCLUSION: We identified hs- TnT as an independent marker predicting the transition in albuminuria stage in hypertension beyond conventional risk-markers. These findings were confirmed in patients with T2DM.
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Authors | Merel E Hellemons, Hiddo J Lambers Heerspink, Ron T Gansevoort, Dick de Zeeuw, Stephan J L Bakker |
Journal | Journal of hypertension
(J Hypertens)
Vol. 31
Issue 4
Pg. 805-12
(Apr 2013)
ISSN: 1473-5598 [Electronic] Netherlands |
PMID | 23425705
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
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Topics |
- Albuminuria
(complications, pathology)
- Case-Control Studies
- Diabetes Mellitus, Type 2
(complications)
- Female
- Humans
- Hypertension
(complications)
- Male
- Troponin T
(analysis)
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