Volume 12 Issue 4
Jul.  2021
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Chen Yinglun, Wei Dong, Wang Zitao, et al. Experimental study on the role of IL-10 in improving donor lung function after ex vivo lung perfusion in rats of cardiac death[J]. ORGAN TRANSPLANTATION, 2021, 12(4): 421-427. doi: 10.3969/j.issn.1674-7445.2021.04.008
Citation: Chen Yinglun, Wei Dong, Wang Zitao, et al. Experimental study on the role of IL-10 in improving donor lung function after ex vivo lung perfusion in rats of cardiac death[J]. ORGAN TRANSPLANTATION, 2021, 12(4): 421-427. doi: 10.3969/j.issn.1674-7445.2021.04.008
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Experimental study on the role of IL-10 in improving donor lung function after ex vivo lung perfusion in rats of cardiac death

doi: 10.3969/j.issn.1674-7445.2021.04.008

  • Department of Thoracic Surgery, Lung Transplantation Center, Wuxi People's Hospital Affiliated to Nanjing Medical University, Wuxi 214000, China

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  • Corresponding author: Chenjingyu, Email: chenjy@wuxiph.com
  • Received Date: 2021-03-28
    Available Online: 2021-07-13
  • Publish Date: 2021-07-15
    Abstract
  •   Objective  To evaluate the effect of interleukin (IL)-10 on donor lung function after ex vivo lung perfusion (EVLP) in rats of cardiac death.  Methods  Twenty adult male SD rats were randomly divided into the simple perfusion group (group A, n=10) and modified perfusion group (group B, n=10). Perfusate A (without IL-10) and perfusate B (supplemented with IL-10) was administered in group A and B, respectively. The EVLP rat models of cardiac death were established. The appearance of donor lung, dry-to-wet (D/W) ratio of donor lung tissues, the function and metabolism of donor lung, the morphology of donor lung and the levels of inflammatory markers of donor lung were statistically compared between two groups.  Results  After perfusion, evident edema of the whole donor lung, poor compliance and a large amount of edema fluid discharged from the airway were observed in group A, whereas no obvious edema and good compliance were found in group B. Compared with group A, the D/W ratio of lung tissues in group B was higher (P < 0.05). In both groups, the pulmonary vein partial pressure of oxygen reached the peak at 2 h after perfusion, which did not significantly differ between two groups (P > 0.05). In group B, the pulmonary artery pressure was increased at a lower speed and significantly lower after perfusion, and the lactic acid level in the perfusate was significantly lower than those in group A (all P < 0.05). In group A, the alveolar structure was largely destroyed and the cells was rare. In group B, the alveolar structure was relatively normal without evident cell edema. The incidence of cell apoptosis of donor lung was high in group A, whereas no obvious cell apoptosis of donor lung was noted in group B. After perfusion for 4 h, the levels of monocyte chemoattractant protein (MCP)-1 and IL-6 were significantly increased, the IL-4 levels were remarkably decreased (all P < 0.05), but the levels of tumor necrosis factor (TNF)-α, IL-1α and inducible nitric oxide synthase (iNOS) did not significantly change in both groups (all P > 0.05).  Conclusions  IL-10 may improve the function of donor lung after EVLP in rat of cardiac death by reducing cell apoptosis.

     

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