A method for translational rat ex vivo lung perfusion experimentation

被引:19
作者
Ohsumi, Akihiro [1 ,2 ]
Kanou, Takashi [1 ]
Ali, Aadil [1 ]
Guan, Zehong [1 ]
Hwang, David M. [1 ]
Waddell, Thomas K. [1 ]
Juvet, Stephen [1 ]
Liu, Mingyao [1 ]
Keshavjee, Shaf [1 ]
Cypel, Marcelo [1 ]
机构
[1] Toronto Gen Hosp, Res Inst, Latner Thorac Surg Res Labs, Toronto, ON, Canada
[2] Kyoto Univ Hosp, Dept Thorac Surg, Kyoto, Japan
关键词
ex vivo lung perfusion; ischemia-reperfusion injury; lung transplantation; organ preservation; rat; ISCHEMIA-REPERFUSION INJURY; CARDIAC-OUTPUT; WARM ISCHEMIA; DONOR LUNG; HEART; PRESERVATION; VENTILATION; INHALATION;
D O I
10.1152/ajplung.00256.2019
中图分类号
Q4 [生理学];
学科分类号
071003 ;
摘要
The application of ex vivo lung perfusion (EVLP) has significantly increased the successful clinical use of marginal donor lungs. While large animal EVLP models exist to test new strategies to improve organ repair. there is currently no rat EVLP model capable of maintaining long-term lung viability. Here, we describe a new rat EVLP model that addresses this need, while enabling the study of lung injury due to cold ischemic time (CIT). The technique involves perfusing and ventilating male Lewis rat donor lungs for 4 h before transplanting the left lung into a recipient rat and then evaluating lung function 2 h after reperfusion. To test injury within this model, lungs were divided into groups and exposed to different CITs (i.e., 20 min, 6 h, 12 h, 18 h and 24 h). Experiments involving the 24-h-CIT group were prematurely terminated due to the development of severe edema. For the other groups, no differences in the ratio of arterial oxygen partial pressure to fractional inspired oxygen (Pa-O2/Fi(O2)) were observed duroing EVLP; however, lung compliance decreased over time in the 18-h group (P = 0.012) and the Pa-O2/Fi(O2) of the blood from the left pulmonary vein 2 h after transplatitation was lower compared with 20-min-CIT group (P = 0.0062). This new model maintained stable lung function during 4-h EVLP and after transplantation when exposed to up to 12 h of CIT.
引用
收藏
页码:L61 / L70
页数:10
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