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Increase in 24-Hour Protein Excretion Immediately After Donation Is Associated With Decreased Functional Recovery in Living Kidney Donors

 Joon Chae Na  ;  Min-Gee Yoon  ;  Hyung Ho Lee  ;  Young Eun Yoon  ;  Deok Gie Kim  ;  Kyu Ha Huh  ;  Yu Seun Kim  ;  Woong Kyu Han 
 Transplantation Proceedings, Vol.51(8) : 2543-2548, 2019 
Journal Title
 Transplantation Proceedings 
Issue Date
OBJECTIVES: In this study, we evaluated the occurrence of proteinuria in living kidney donors during the immediate postdonation period, aiming to determine its clinical significance in renal function recovery. PATIENTS AND METHODS: We enrolled living kidney donors with predonation protein excretion rate (PER) < 150 mg/24 h. Participants were divided into 2 groups according to immediate postdonation PER (4 days after nephrectomy): non-microproteinuria (non-mPr; PER < 150 mg/24 h), n = 244; and immediate postdonation microproteinuria (ImPr; PER ≥ 150 mg/24 h), n = 605. RESULTS: Estimated glomerular filtration rate (eGFR) did not differ significantly between groups immediately after nephrectomy but was consistently lower in the ImPr group 1 week to 1 year postdonation (1-year postdonation eGFR: ImPr group, 63.6 ± 12.1 mL/min/1.73 m2; non-mPr group, 68.6 ± 12.3 mL/min/1.73 m2; P = .001). Immediate postdonation microproteinuria was an independent predictor of eGFR at 1 year postdonation (β [standard error] = -2.68 [1.15], 95% confidence interval -4.94 to -0.42, P = .02), along with predonation eGFR, age, and sex. Immediate postdonation microproteinuria was more common in donors who were older or male and occurred in 71.3% of kidney donors, suggesting renal injury in this period. CONCLUSIONS: Although proteinuria generally resolves, its impact persists and can impair renal function recovery. Donors who are older and male are more likely to undergo immediate hyperfiltration after donation.
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1. College of Medicine (의과대학) > Dept. of Surgery (외과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Urology (비뇨의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Deok Gie(김덕기)
Kim, Yu Seun(김유선) ORCID logo https://orcid.org/0000-0002-5105-1567
Na, Joon Chae(나준채) ORCID logo https://orcid.org/0000-0003-4449-8472
Han, Woong Kyu(한웅규) ORCID logo https://orcid.org/0000-0002-2527-4046
Huh, Kyu Ha(허규하) ORCID logo https://orcid.org/0000-0003-1364-6989
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