Discrepancies between transcutaneous and estimated glomerular filtration rates in rats with chronic kidney disease
Accurate assessment of the glomerular filtration rate (GFR) is crucial for researching kidney disease in rats. Although validation of methods that assess GFR is crucial, large-scale comparisons between different methods are lacking. Both transcutaneous GFR (tGFR) and a newly developed estimated GFR...
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| Hauptverfasser: | , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
June 2024
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| In: |
Kidney international
Year: 2024, Jahrgang: 105, Heft: 6, Pages: 1212-1220 |
| ISSN: | 1523-1755 |
| DOI: | 10.1016/j.kint.2024.02.020 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1016/j.kint.2024.02.020 Verlag, kostenfrei, Volltext: https://www.sciencedirect.com/science/article/pii/S008525382400187X 
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| Verfasserangaben: | Tobias T. Pieters, Paul J. Besseling, Dominique M. Bovée, Maarten B. Rookmaaker, Marianne C. Verhaar, Benito Yard, Ewout J. Hoorn and Jaap A. Joles |
MARC
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| 245 | 1 | 0 | |a Discrepancies between transcutaneous and estimated glomerular filtration rates in rats with chronic kidney disease |c Tobias T. Pieters, Paul J. Besseling, Dominique M. Bovée, Maarten B. Rookmaaker, Marianne C. Verhaar, Benito Yard, Ewout J. Hoorn and Jaap A. Joles |
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| 520 | |a Accurate assessment of the glomerular filtration rate (GFR) is crucial for researching kidney disease in rats. Although validation of methods that assess GFR is crucial, large-scale comparisons between different methods are lacking. Both transcutaneous GFR (tGFR) and a newly developed estimated GFR (eGFR) equation by our group provide a low-invasive approach enabling repeated measurements. The tGFR is a single bolus method using FITC-labeled sinistrin to measure GFR based on half-life of the transcutaneous signal, whilst the eGFR is based on urinary sinistrin clearance. Here, we retrospectively compared tGFR, using both 1- and 3- compartment models (tGFR_1c and tGFR_3c, respectively) to the eGFR in a historic cohort of 43 healthy male rats and 84 male rats with various models of chronic kidney disease. The eGFR was on average considerably lower than tGFR-1c and tGFR-3c (mean differences 855 and 216 μL/min, respectively) and only 20 and 47% of measurements were within 30% of each other, respectively. The relative difference between eGFR and tGFR was highest in rats with the lowest GFR. Possible explanations for the divergence are problems inherent to tGFR, such as technical issues with signal measurement, description of the signal kinetics, and translation of half-life to tGFR, which depends on distribution volume. The unknown impact of isoflurane anesthesia used in determining mGFR remains a limiting factor. Thus, our study shows that there is a severe disagreement between GFR measured by tGFR and eGFR, stressing the need for more rigorous validation of the tGFR and possible adjustments to the underlying technique. | ||
| 650 | 4 | |a estimated glomerular filtration rate | |
| 650 | 4 | |a FITC-sinistrin | |
| 650 | 4 | |a rats | |
| 650 | 4 | |a sinistrin clearance | |
| 650 | 4 | |a transcutaneous glomerular filtration rate | |
| 700 | 1 | |a Besseling, Paul J. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Bovée, Dominique M. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Rookmaaker, Maarten B. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Verhaar, Marianne C. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Yard, Benito A. |d 1961- |e VerfasserIn |0 (DE-588)1025110633 |0 (DE-627)721145892 |0 (DE-576)369951735 |4 aut | |
| 700 | 1 | |a Hoorn, Ewout J. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Joles, Jaap A. |e VerfasserIn |4 aut | |
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