Related Experiment Video
Updated: Jul 19, 2026
Study of Experimental Organ Donation Models for Lung Transplantation
Published on: March 15, 2024
Induction of carbon monoxide in donor animals prior to organ procurement reduces graft immunogenicity and inhibits
Paulo Ney Aguiar Martins1, Anja Reutzel-Selke, Anke Jurisch
1Division of Transplant Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
Background:
Nonspecific inflammatory damages occurring prior to organ transplantation reduce long-term graft survival. Here, we tested the beneficial effects of carbon monoxide (CO) induction by methylene chloride (MC).
Methods:
Fischer-344 (F-344 Rat) or Dark Agouti (DA Rat) donor animals were either treated with MC four hours prior to organ removal or remained untreated. Kidneys were transplanted into Lewis (LEW) recipients. The low responder strain combination (F-344-->LEW) was studied for long-term graft changes. Dendritic cells (DCs) migration and early changes were followed in additional groups of a high responding donor/recipient strain combination (DA-->LEW). Native kidneys of uninephrectomized, age-matched normal animals served as controls.
Results:
Following MC application COHb peaked within two hours in donor animals. Renal function and morphology improved significantly in renal allografts of CO induced donor animals and were comparable to native controls long-term (24 wks). Early after transplantation (24 hr) donor-derived DCs, CD4+ T-cells and alloreactive T-cells were significantly reduced following the engraftment of organs from treated donors. In addition, a trend towards a Th1/Th2 shift and a significant intragraft reduction of CD3 mRNA expression was observed.
Conclusion:
Donor treatment for the induction of CO reduced graft immunogenicity and inhibited chronic allograft nephropathy.
