Prolonged warm ischemia exacerbated acute rejection after lung transplantation from donation after cardiac death in a mouse

Research output: Contribution to journalArticle

Abstract

Objective: In lung transplantation (LTx) from donation after cardiac death (DCD), the donor lungs are inevitably exposed to warm ischemic time (WIT) between the cardiac arrest and the initiation of cold preservation. We conducted this study to examine the effect of prolonged WIT on lung allograft rejection in a murine model of LTx from DCD. Methods: Allogeneic BALB/c → B6 LTx from DCD was performed with a WIT of 15 min (WIT15 group, n = 5) or 60 min (WIT60 group, n = 5). Recipients were immunosuppressed by perioperative costimulatory blockade. The lung allografts were analyzed by histology and flow cytometry on day 7 after the LTx. Results: Histologically, the rejection grade in the WIT60 group was significantly higher than that in the WIT15 group (3.4 ± 0.4 vs. 2.2 ± 0.2, P = 0.0278). Moreover, the intragraft CD8+ to CD4+ T cell ratio in the WIT60 group was significantly higher than that in the WIT15 group (2.3 ± 0.12 vs. 1.2 ± 0.11, P < 0.0001). Conclusions: Prolonged WIT could exacerbate the severity of lung allograft rejection after LTx from DCD. Minimization of the WIT could improve the outcomes after LTx from DCD.

Original languageEnglish
Pages (from-to)57-62
Number of pages6
JournalGeneral Thoracic and Cardiovascular Surgery
Volume68
Issue number1
DOIs
Publication statusPublished - Jan 1 2020

Keywords

  • Brain dead donor
  • Donation after cardiac death
  • Lung transplantation
  • Organ preservation
  • Rejection

ASJC Scopus subject areas

  • Surgery
  • Pulmonary and Respiratory Medicine
  • Cardiology and Cardiovascular Medicine

Fingerprint Dive into the research topics of 'Prolonged warm ischemia exacerbated acute rejection after lung transplantation from donation after cardiac death in a mouse'. Together they form a unique fingerprint.

  • Cite this