O'Valle F, Del Moral RGM, Benítez MDC, Martín-Oliva D, Gómez-Morales M, Aguilar D, Aneiros-Fernández J, Hernández-Cortés P, Osuna A, Moreso F, Serón D, Oliver FJ, Del Moral RG. Poly[ADP-ribose] polymerase-1 expression is related to cold ischemia, acute tubular necrosis, and delayed renal function in kidney transplantation.
PLoS One 2009;
4:e7138. [PMID:
19784367 PMCID:
PMC2745752 DOI:
10.1371/journal.pone.0007138]
[Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2009] [Accepted: 08/24/2009] [Indexed: 11/18/2022] Open
Abstract
UNLABELLED
Cold ischemia time especially impacts on outcomes of expanded-criteria donor (ECD) transplantation. Ischemia-reperfusion (IR) injury produces excessive poly[ADP-Ribose] Polymerase-1 (PARP-1) activation. The present study explored the hypothesis that increased tubular expression of PARP-1 contributes to delayed renal function in suboptimal ECD kidney allografts and in non-ECD allografts that develop posttransplant acute tubular necrosis (ATN).
MATERIALS AND METHODS
Nuclear PARP-1 immunohistochemical expression was studied in 326 paraffin-embedded renal allograft biopsies (193 with different degrees of ATN and 133 controls) and in murine Parp-1 knockout model of IR injury.
RESULTS
PARP-1 expression showed a significant relationship with cold ischemia time (r coefficient = 0.603), time to effective diuresis (r = 0.770), serum creatinine levels at biopsy (r = 0.649), and degree of ATN (r = 0.810) (p = 0.001, Pearson test). In the murine IR model, western blot showed an increase in PARP-1 that was blocked by Parp-1 inhibitor. Immunohistochemical study of PARP-1 in kidney allograft biopsies would allow early detection of possible delayed renal function, and the administration of PARP-1 inhibitors may offer a therapeutic option to reduce damage from IR in donor kidneys by preventing or minimizing ATN. In summary, these results suggest a pivotal role for PARP-1 in the ATN of renal transplantation. We propose the immunohistochemical assessment of PARP-1 in kidney allograft biopsies for early detection of a possible delayed renal function.
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