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Clinical and Experimental Nephrology

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01.10.2011 | Original Article

Urinary angiotensinogen as a predictive marker in patients with immunoglobulin A nephropathy

verfasst von: Yang-Gyun Kim, Se-Bin Song, Sang-Ho Lee, Ju-Young Moon, Kyung-Hwan Jeong, Tae-Won Lee, Chun-Gyoo Ihm

Erschienen in: Clinical and Experimental Nephrology | Ausgabe 5/2011

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Abstract

Background

The intrarenal renin−angiotensinogen system (RAS) plays a major role in the progression of chronic kidney disease. Urinary angiotensinogen (UAGT) provides a specific index of the intrarenal RAS status. This study was conducted to find the role of UAGT as a predictive marker in patients with immunoglobulin A nephropathy (IgAN).

Methods

Thirty-six patients with IgAN, 14 non-IgAN and 15 healthy controls were included. The UAGT concentration was measured using human ELISA kits and adjusted by urinary creatinine.

Results

UAGT levels were significantly higher in patients with IgAN and non-IgAN than in healthy subjects (104.96 vs. 6.71 ng/mgCr, p < 0.01). Using univariate regression analysis, UAGT was found to correlate with the urine protein-to-creatinine ratio (UPCR), serum creatinine, and systolic and diastolic blood pressure in patients with IgAN. Multivariate regression analysis revealed that UAGT correlated positively with UPCR. Patients with levels of UAGT >100 ng/mgCr showed higher serum creatinine after treatment than patients with UAGT levels <100 ng/mgCr.

Conclusion

This study showed that UAGT levels are increased and correlate positively with the UPCR in IgAN. Patients with high levels of UAGT may have poor renal function following treatment.

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Titel: Urinary angiotensinogen as a predictive marker in patients with immunoglobulin A nephropathy
verfasst von: Yang-Gyun Kim
Se-Bin Song
Sang-Ho Lee
Ju-Young Moon
Kyung-Hwan Jeong
Tae-Won Lee
Chun-Gyoo Ihm
Publikationsdatum: 01.10.2011
Verlag: Springer Japan
Erschienen in: Clinical and Experimental Nephrology / Ausgabe 5/2011
Print ISSN: 1342-1751
Elektronische ISSN: 1437-7799
DOI: https://doi.org/10.1007/s10157-011-0475-4

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Urinary angiotensinogen as a predictive marker in patients with immunoglobulin A nephropathy