Frontiers in Nephrology (Nov 2024)

Analyzing body composition in living kidney donors: impact on post-transplant kidney function

  • Evelien E. Quint,
  • Lisa B. Westenberg,
  • Gertrude J. Nieuwenhuijs-Moeke,
  • Eva A. N. van den Broek,
  • Marcel Zorgdrager,
  • Alain R. Viddeleer,
  • Stephan J. L. Bakker,
  • Ija M. Nolte,
  • Marco van Londen,
  • Robert A. Pol,
  • TransplantLines Investigators

DOI
https://doi.org/10.3389/fneph.2024.1467669
Journal volume & issue
Vol. 4

Abstract

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Living donor kidney transplantation boasts superior patient and graft survival rates compared to deceased donor kidney transplantation. However, the impact of living donor body composition (BC) on post-transplant kidney function remains uncertain. In a cohort of 293 living kidney donor-recipients pairs, we utilized linear mixed model analyses, adjusted for time and including a multiplicative interaction term of time with the donor body composition measure, and found no significant associations between any donor BC measure and the annual change in recipient post-transplantation estimated glomerular filtration rate (eGFR) [donor body mass index (BMI): B=-0.01, 95%CI -0.13; 0.11, p=0.88; donor waist circumference: B=0.02, 95%CI -0.02; 0.06, p=0.38; donor skeletal muscle index: B=-0.02, 95%CI -0.07; 0.04, p=0.63; donor skeletal muscle radiation attenuation: B=-0.002, 95%CI -0.06; 0.06, p=0.96; donor visceral adipose tissue index: B=-0.001, 95%CI -0.02; 0.02, p=0.93; donor subcutaneous adipose tissue index: B=-0.001, 95%CI -0.02; 0.02, p=0.94; donor intramuscular adipose tissue index: B=-0.12, 95%CI -0.29; 0.06, p=0.19; donor total abdominal adipose tissue index: B=-0.001, 95%CI -0.01; 0.01, p=0.89]. Our study suggests that pre-donation BC does not affect post-transplantation recipient eGFR in donor populations with a BMI below 35 kg/m2.

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