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Clinical and Experimental Nephrology

, Volume 22, Issue 5, pp 1163–1166 | Cite as

GFR-estimation by serum creatinine during glucocorticosteroid therapy

  • Emil den BakkerEmail author
  • Berend Koene
  • Joanna A. E. van Wijk
  • Isabelle Hubeek
  • Reinoud Gemke
  • Arend Bökenkamp
Original article

Abstract

Background

While glucocorticosteroids (GCS) are widely used in patients with kidney disease, little is known about their effect on serum creatinine, the most commonly used endogenous marker of kidney function.

Methods

We assessed the effect of GCS on the relationship between estimated GFR using the Schwartz equation (eGFR) and measured GFR using a single-injection inulin clearance (Cin) in children both in a paired analysis and a cross-sectional study. Primary outcome variable was the difference between eGFR and Cin (ΔGFR) in a paired analysis involving 22 patients during and off GCS treatment (mean GFR 103.8 ml/min/1.73 m2, mean prednisone dose 34.8 mg/m2/day). In a cross-sectional analysis in 42 patients receiving GCS (mean dose of 25.7 mg/m2/day), a dose-dependent effect was explored using univariate and multivariate linear regression of various variables including GCS dosage with serum creatinine as dependent variable.

Results

The paired analysis showed no significant difference in ΔGFR with or without GCS [− 23 (SD 53) vs. − 9 (SD 41) ml/min/1.73 m2, p = 0.203]. Stepwise multivariate linear regression analysis showed a significant correlation between age and Cin, while GCS dose was not related to serum creatinine.

Conclusion

GCS use had no significant effect on serum creatinine as a marker for kidney function in a mixed population of renal outpatient clinic children.

Keywords

Glucocorticosteroids Creatinine Estimated GFR 

Notes

Compliance with ethical standards

Conflict of interest

On behalf of all authors, the corresponding author states that there is no conflict of interest.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. For this type of study formal consent is not required.

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Copyright information

© Japanese Society of Nephrology 2018

Authors and Affiliations

  • Emil den Bakker
    • 1
    Email author
  • Berend Koene
    • 1
  • Joanna A. E. van Wijk
    • 1
  • Isabelle Hubeek
    • 2
  • Reinoud Gemke
    • 3
  • Arend Bökenkamp
    • 1
  1. 1.Department of Pediatric NephrologyVU University Medical CenterAmsterdamThe Netherlands
  2. 2.Department of Clinical ChemistryVU University Medical CentreAmsterdamThe Netherlands
  3. 3.Department of PediatricsVU University Medical CentreAmsterdamThe Netherlands

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