Structural features of donated kidneys may influence their longevity in recipients

Structural features of donated kidneys may influence their longevity in recipients

UT Southwestern study identifies new vulnerability in kidney tumors Although living kidney donors are extensively evaluated to ensure that they have good health and that they do not have any medical conditions that would disqualify them from donating, subtle injuries in the donated kidney tissue may not be detected through standard evaluations. When a team led by Andrew Rule, MD and Naim Issa, MD (Mayo Clinic, in Rochester) evaluated 2,293 kidney donor-recipient pairs, the investigators discovered that some very subtle structural features of the donated kidney may influence the longevity of the kidney in the recipient. For example, minimal scarring of the kidney or hardening of its vessels, as well as a larger size of nephrons-;the microscopic functional units of the kidney-;observed in biopsies at the time of donation were associated with a shorter lifespan of the transplanted kidney in recipients, regardless of other donor or recipient characteristics that are known to affect the longevity of donated kidneys. We think that these subtle features in the living donor kidney make the recipient more susceptible to lose the kidney transplant over time. These important findings may provide insights into previously unrecognized predictors of kidney transplant failure in recipients." Dr. Naim Issa, MD, Mayo Clinic, Rochester Source: American Society of Nephrology Journal reference: Issa, N. et al . (2020) Kidney Structural Features from Living Donors Predict Graft Failure in the Recipient. Journal of the American Society of Nephrology . doi.



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