Ex Vivo MFG-E8 Treatment Improves the Function of Lungs Procured from Cardiac Death Donors in Preclinical Porcine Model

Overview

Journal Heliyon

Specialty Social Sciences

Date 2024 Jul 23

PMID 39040292

Authors

Ping Li

Kai Peng

Li Gang Liu

Qing Yun Liu

Zhen Hua Huang

Durgahee Mouniir Sha Ahmad

Xiang Wei

Si Hai Gao

Affiliations

Soon will be listed here.

Abstract

Ex vivo lung perfusion (EVLP) is a promising technology that allows the re-evaluation of donor lungs and has the potential to improve marginal lung reconditioning. The present study focused on the effects of milk fat globule epidermal growth factor 8 (MFG-E8) on the function of donation after circulatory death (DCD) lungs during EVLP and transplant reperfusion. Domestic swine were assigned to 4 groups. In the control group, the donor lungs lacking warm ischemia were preserved in Perfadex for 4 h. The swine in the other three groups underwent hypoxic arrest, followed by 1 h of warm ischemia. The DCD lungs were procured and randomly divided into three groups: cold static preservation (DCD-CSP) group, DCD-EVLP group, and DCD-MFG-E8 group. The left lung of all groups was transplanted and reperfused. During EVLP and reperfusion, lung functions and pathological evaluations were performed. Treatment with MFG-E8 resulted in significantly improved blood oxygenation. The mean pulmonary artery pressure, peak airway pressure, and expression of IL-1β, IL-6, and IL-12 were significantly lower but IL-10 was higher in the DCD -MFG-E8 group. Furthermore, the lung injury severity score, pulmonary edema, and wet-to-dry weight ratio were also reduced in MFG-E8-treated lungs. However, the pulmonary vascular resistance and expression of TNF-α did not differ from the DCD -EVLP group but were significantly lower than in the DCD -CSP group. Adding MFG-E8 into the perfusate during EVLP obtains optimal graft function of lungs from DCD. This finding, if confirmed clinically, can be applied to recondition grafts and expanded use of DCD lungs.

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