器官移植

2021 Vol. 12, No. 2

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Editorial
Diagnosis and Treatment Specification
Banff Allograft Pathology
Academic Summary
Transplantation Forefront
Original Article
Review Article

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Editorial

Establishment and management of clinical use price of donation after citizen's death based on cost accounting

Li Yushu, Yang Shunliang

2021, 12(2): 123-128. doi: 10.3969/j.issn.1674-7445.2021.02.001

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In recent years, the fields of donation after citizen's death and organ transplantation in China have developed rapidly with remarkable achievements and revolutionary changes in the source of transplant organs.How to transform the development of organ donation and transplantation from high-speed to high-quality growth mode?It is extremely urgent to establish the expenditure and management system of organ donation and transplantation.In this article, the establishment and management of clinical use price of organs from donation after citizen's death were investigated from the perspectives of policy basis, accounting items, accounting methods, price formation and price management, aiming to provide reference for resolving the problem of cost accounting and price determination of clinical use of donated organs.

Diagnosis and Treatment Specification

Diagnosis and treatment specification for postoperative complications after liver transplantation in China (2019 edition)

Branch of Organ Transplantation of Chinese Medical Association

2021, 12(2): 129-133. doi: 10.3969/j.issn.1674-7445.2021.02.002

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The surgical techniques of liver transplantation are increasingly sophisticated with the definite effect.However, postoperative complications, such as liver graft nonfunction, postoperative bleeding and biliary tract complication may still occur, which may affect the long-term survival of the recipients.To further standardize the diagnosis and treatment of postoperative complications after liver transplantation, Branch of Organ Transplantation of Chinese Medical Association organized liver transplant experts to summarize the latest research progress at home and abroad, integrate international guidelines and clinical practice and formulate the"Diagnosis and treatment specification for postoperative complications after liver transplantation in China (2019 Edition)"based upon the diagnosis and treatment of postoperative complications after liver transplantation.

Banff Allograft Pathology

Pathology of T cell-mediated rejection in renal allograft

Guo Hui

2021, 12(2): 134-142. doi: 10.3969/j.issn.1674-7445.2021.02.003

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T cell-mediated rejection (TCMR) is one of the main mechanisms of rejection in organ transplantation, which is also the most common type of acute rejection.Based on Banff classification on allograft pathology (Banff classification) in 2019, TCMR can be divided into acute TCMR (aTCMR) and chronic active TCMR (caTCMR) according to the characteristics of immune lesions.In this article, the basic definition of TCMR, the research progress on TCMR pathology according to Banff classification for renal allograft, and the basic pathological changes and diagnostic grading of TCMR were reviewed, aiming to provide evidence for early identification, diagnosis and treatment of TCMR and prevent the progression of TCMR into caTCMR, thereby guarantying the long-term survival of both the renal allograft and recipient.

Academic Summary

Experimental research progress on immunology of organ transplantation in 2020

Tian Qianchuan, Wu Changhong, Xu Yanan, Zhao Yong

2021, 12(2): 143-154. doi: 10.3969/j.issn.1674-7445.2021.02.004

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Despite the rapid development of organ transplantation technique, the long-term survival and functional maintenance of transplant organs still depend on the massive use of immunosuppressants.At present, the rejection and infection after organ transplantation remain the major problem facing transplant surgeons and recipients. The basic research in the field of organ transplantation is still steadily advancing to further explore the basic biological principle of rejection and immune tolerance, resolve multiple pathophysiological questions in the process of clinical organ transplantation and provide basic theoretical basis and clinical intervention guidance for wider and more effective application of organ transplantation.In 2020, researchers have achieved significant progresses on a wide range of basic researches of organ transplantation, such as the fundamental principle of immune response, overcoming transplantation rejection and inducing transplantation immune tolerance, etc.In this article, novel attempts and progresses upon inducing transplantation immune tolerance in 2020 were reviewed from two perspectives including inhibition of immune cell function and suppression of immune signaling pathway, and the main development direction of immunology of organ transplantation in the future was prospected.

Highlights of international frontier hot spots and new progress on renal transplantation in 2020

Shao kun, Wang Xianghui

2021, 12(2): 155-168. doi: 10.3969/j.issn.1674-7445.2021.02.005

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A large quantity of studies related to renal transplantation were reviewed to extract and summarize the international frontier hot spots and difficulties, new transplantation technologies, new methods, new visions and new progress on renal transplantation in 2020.The main contents included rejection, optimization application and regulation of immunosuppression, transplant infection, malignancy after transplantation, non-invasive detection and biomarkers, donor organ preservation, repair and utilization, recurrence of renal disease after renal transplantation, multi-factors affecting long-term survival of transplant kidney, computer and artificial intelligence, etc.Strengthening the reading and thinking of literatures in the field of renal transplantation and broadening horizons in higher starting piont, combined with clinical practice of renal transplantation in China, help to promote the long-term efficacy of renal transplantation.

Research highlights of renal transplantation in 2020: voice from China

Luo Zihuan, Sun Qiquan

2021, 12(2): 169-176. doi: 10.3969/j.issn.1674-7445.2021.02.006

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Renal transplantation is the optimal approach to improve the quality of life and restore normal life for patients with end-stage renal diseases.With the development of medical techniques and immunosuppressants, the shortterm survival of renal graft has been significantly prolonged, whereas the long-term survival remains to be urgently solved.Renal ischemia-reperfusion injury (IRI), acute rejection, chronic renal allograft dysfunction, renal fibrosis and other factors are still the major problems affecting the survival of renal graft.Relevant researches have always been hot spots in the field of renal transplantation.Meantime, 2020 is an extraordinary year.The novel coronavirus pneumonia (COVID-19) pandemic severely affects the development of all walks of life.Researches related to renal transplantation have also sprung up.In this article, the frontier hotspots of clinical and basic studies related to renal transplantation and the COVID-19 related researches in the field of renal transplantation in China were reviewed, aiming to provide novel therapeutic ideas and strategies.

Transplantation Forefront

Role of NLRP3 inflammasome and related inflammatory signaling pathways in renal ischemia-reperfusion injury

Yuan Qiang, Shen Kaiwen, Zhang Ruibo, Shen Jun

2021, 12(2): 177-183. doi: 10.3969/j.issn.1674-7445.2021.02.007

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Renal ischemia-reperfusion injury (IRI) commonly occurs in renal transplantation, which is an important pathophysiological process that causes acute renal failure and severely affects clinical prognosis of the recipients. Inflammatory response plays a critical role in the pathogenesis and pathological process of IRI. Activated NOD-like receptor protein 3(NLRP3) inflammasome can mediate the maturation and release of various pro-inflammatory cytokines, thereby regulating the inflammatory response and relevant cell functions. In this article, the mechanism underlying NLRP3 inflammasome and its related inflammatory signaling pathway in renal IRI were reviewed, aiming to provide novel ideas for clinical prevention and treatment of renal IRI.

Original Article

Multi-disciplinary team of the treatment of bilateral lung transplantation for pediatric cystic fibrosis

Wang Shengfei, Chen Jingyu, Liu Yi, Zheng Mingfeng, Mao Wenjun

2021, 12(2): 184-190. doi: 10.3969/j.issn.1674-7445.2021.02.008

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Objective To improve the surgical efficacy of bilateral lung transplantation for pediatric cystic fibrosis through multi-disciplinary team (MDT). Methods Preoperative MDT consultation was delivered for a 10-year-old child with rare end-stage cystic fibrosis to establish the corresponding treatment protocol. Results The child was diagnosed with cystic fibrosis for 5 years, and the indication of lung transplantation were confirmed. After preoperative MDT consultation, bilateral lung transplantation via a Clam-shell incision was determined. The vital signs were maintained stable during operation. Postoperatively, ventilator-assisted ventilation, anti-infection, immunosuppression, acid suppression, prevention of stress ulceration and other treatments were delivered. Individualized treatment was given according to the characteristics of the child, and the child was well recovered. Conclusions Through preoperative MDT consultation, lung transplantation yields satisfactory surgical efficacy in treating pediatric cystic fibrosis and lowers the risk of postoperative complications, which deserves application in clinical practice.

Rapid and sutureless anastomosis of artificial vascular replacement of abdominal aorta in dog models using magnetic compression anastomosis technique

Liu Shiqi, Ci Hongbo, Lei Peng, Lyu Yi, Wang Shanpei, Bai Jigang

2021, 12(2): 191-196. doi: 10.3969/j.issn.1674-7445.2021.02.009

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Objective To explore the feasibility of rapid and sutureless anastomosis of artificial vascular replacement of abdominal aorta in dog models using magnetic compression anastomosis (MCA) technique. Methods Twelve healthy adult crossbred dogs were evenly divided into the MCA and hand suturing (HS) groups according to the anastomosis method between abdominal aorta and artificial blood vessels. The intraoperative duration of abdominal aorta occlusion, intraoperative condition of anastomotic stoma and postoperative imaging examination of anastomotic stoma were compared between two groups. Results The intraoperative duration of abdominal aorta occlusion in the MCA group was significantly shorter than that in the HS group [(5.2±2.3) min vs. (24.4±4.3) min, P < 0.001]. No anastomotic leakage of blood or anastomotic stenosis occurred in the MCA group during the operation. Intraoperative anastomotic leakage of blood occurred in all of the 6 dogs in the HS group. Among them, 1 dog died of excessive blood loss, and 2 dogs experienced mild anastomotic stenosis due to repeated repair. Postoperative color Doppler ultrasound and angiography showed smooth blood flow at the anastomotic stoma without stenosis or thrombosis in the MCA group. In the HS group, 4 dogs presented with anastomotic stenosis on angiography at postoperative 4 weeks. Conclusions MCA technique may achieve rapid and sutureless anastomosis of artificial vascular replacement of abdominal aorta in dog models, which reduces the incidence of anastomotic complications and accelerates postoperative recovery.

Risk factors of multi-drug resistant organism infection after liver transplantation: a single-center clinical trial

Fang Yitian, Wu Ruolin, Huang Fan, Wang Guobin, Feng Lijuan, Yu Xiaojun, Hou Liujin, Ye Zhenghui, Geng Xiaoping, Zhao Hongchuan

2021, 12(2): 197-202. doi: 10.3969/j.issn.1674-7445.2021.02.010

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Objective To analyze the risk factors of multi-drug resistant organism (MDRO) infection after liver transplantation. Methods The clinical data of 77 recipients undergoing liver transplantation were retrospectively analyzed. According to the incidence of MDRO infection, all recipients were divided into the non-MDRO infection group (n=51) and MDRO infection group (n=26). The infection rate and strain distribution of MDRO in liver transplant recipients were summarized. The risk factors of MDRO infection in liver transplant recipients were identified. Clinical prognosis of all recipients was statistically compared between two groups. Results The infection rate of MDRO after liver transplantation was 34% (26/77), mainly carbapenem-resistant MDRO infection. The main sites of infection included lung, abdominal cavity and incision. Univariate analysis showed that postoperative tracheal intubation ≥48 h, length of intensive care unit (ICU) stay ≥72 h, length of hospital stay ≥30 d, re-operation, continuous renal replacement therapy (CRRT) and tacrolimus (Tac) blood concentration ≥15 ng/mL were the risk factors for MDRO infection after liver transplantation. Cox regression analysis indicated that postoperative tracheal intubation≥48 h, re-operation, CRRT and Tac blood concentration ≥15 ng/mL were the independent risk factors for MDRO infection after liver transplantation. The fatality in the MDRO infection group was significantly higher than that in the non-MDRO infection group [31%(8/26) vs. 10%(5/51), P=0.01]. Conclusions Postoperative tracheal intubation ≥48 h, re-operation, CRRT and Tac blood concentration ≥15 ng/mL may increase the risk of MDRO infection after liver transplantation and affect clinical prognosis of the recipients.

Analysis of risk factors and clinical prognosis of massive blood transfusion during perioperative period of lung transplantation

Wen Huanshun, Hao Yang, Chen Jingyu, Liang Chaoyang

2021, 12(2): 203-208. doi: 10.3969/j.issn.1674-7445.2021.02.011

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Objective To investigate the risk factors and clinical prognosis of massive blood transfusion during the perioperative period of lung transplantation. Methods Clinical data of 159 lung transplant recipients were retrospectively analyzed. According to the quantity of perioperative blood transfusion, all recipients were divided into the massive blood transfusion group (n=20) and non-massive blood transfusion group (n=139). Clinical data of lung transplant recipients were statistically compared between two groups. The risk factors of perioperative massive blood transfusion were analyzed. Clinical prognosis of the recipients was observed in two groups. Results There were significant differences between the two groups in preoperative data including anticoagulant therapy, hemoglobin content, the number of recipents with idiopathic pulmonary fibrosis or idiopathic pulmonary hypertension, and intraoperative data including the number of recipents presenting with intraoperative intrathoracic adhesion, operation time and the amount of various component transfusion(all P < 0.05). Preoperative anticoagulant therapy, incidence of intraoperative intrathoracic adhesion, use of extracorporeal membrane oxygenation (ECMO) and long operation time were the risk factors of massive blood transfusion during perioperative period of lung transplantation(all P < 0.05). In the massive blood transfusion group, the incidence rate of grade Ⅲ primary graft dysfunction (PGD) and the fatality within postoperative 30 d were higher compared with those in the non-massive blood transfusion group(both P < 0.01). Low body mass index (BMI) and massive blood transfusion were the risk factors for death within postoperative 30 d(P=0.048、P < 0.001). The 1-year survival rate in the massive blood transfusion group was lower than that in the non-massive blood transfusion group(P < 0.001). Conclusions Preoperative anticoagulant therapy, incidence of intraoperative intrathoracic adhesion, use of ECMO and long operation time are the risk factors for massive blood transfusion during perioperative period of lung transplantation. Massive blood transfusion negatively affects the clinical prognosis of the recipients undergoing lung transplantation.

Clinical application of biomarkers in DCD donor kidney perfusate for predicting delayed graft function after renal transplantation

Li Xin, Sun Zejia, Cai Jifei, Wang Wei

2021, 12(2): 209-214. doi: 10.3969/j.issn.1674-7445.2021.02.012

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Objective To explore the feasibility of biomarkers in static cold storage (SCS) perfusate of donor kidney from donation after cardiac death (DCD) for predicting delayed graft function (DGF) after renal transplantation. Methods Clinical data of 64 recipients and 47 donors undergoing DCD renal transplantation were retrospectively analyzed. All recipients were divided into the DGF group (n=7) and immediate graft function (IGF) group (n=57) according to the incidence of postoperative DGF in the recipients. The levels of neutrophil gelatinase-associated lipocalin (NGAL), liver-type fatty acid-binding protein (L-FABP), interleukin -18(IL-18) and kidney injury molecule-1 (KIM-1) in the SCS perfusate were statistically compared between two groups, and the correlation with DGF was analyzed. The predictive value of each biomarker in the occurrence of DGF in recipients after renal transplantation was analyzed. Results The incidence of DGF in the recipients undergoing DCD renal transplantation was 11% (7/64). The NGAL level in the donor kidney perfusate of the DGF group was significantly higher than that in the IGF group (P=0.009). The NGAL level in the donor kidney perfusate was positively correlated with the incidence of DGF in recipients after renal transplantation (r=0.430, P < 0.001). The receiver operating characteristic (ROC) curve analysis showed that the increased levels of NGAL and KIM-1 in the perfusate yielded certain predictive value for DGF in recipients after renal transplantation (both P < 0.05). The area under the curve (AUC) of combined detection of NGAL and KIM-1 for predicting DGF in recipients after renal transplantation was 0.932 [95% confidence interval (CI) 0.850-1.000]. The sensitivity was calculated as 1.000 and 0.754 for the specificity (P < 0.05). Conclusions The NGAL level in the SCS perfusate of DCD donor kidney is associated with the occurrence of DGF in recipients after renal transplantation. Combined detection of NGAL and KIM-1 levels in the perfusate may accurately predict the occurrence of DGF in recipients after renal transplantation.

Clinical analysis of percutaneous transluminal angioplasty combined with stent implantation in the treatment of transplant renal artery stenosis

Gu Shijie, Chen Qiuyuan, Cui Ruiwen, Ma Qing, Ma Lin, Shi Xiaohong, Meng Fanhang, Cao Ronghua

2021, 12(2): 215-219. doi: 10.3969/j.issn.1674-7445.2021.02.013

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Objective To evaluate the clinical efficacy of percutaneous transluminal angioplasty (PTA) combined with stent implantation in the treatment of transplant renal artery stenosis (TRAS) after renal transplantation. Methods Clinical data of 21 patients with TRAS after renal transplantation undergoing PTA combined with stent implantation were retrospectively analyzed. The incidence of TRAS in renal transplant recipients was summarized. The changes of relevant indexes in patients with TRAS were statistically compared before and after interventional treatment. Clinical prognosis of patients with TRAS was evaluated. Results The incidence of TRAS in renal transplant recipients was 4.1%(21/507). TRAS was diagnosed at postoperative 5 (4, 7) months, and 67% (14/21) of patients developed TRAS within postoperative 6 months. Compared with the values before interventional therapy, the serum creatinine level, systolic and diastolic blood pressure and peak flow velocity of transplant renal artery of patients with TRAS were significantly decreased, and the estimated glomerular filtration rate (eGFR) and interlobar arterial resistance index were significantly increased at 1 week and 1 month after interventional therapy (all P < 0.05). During postoperative follow-up after PTA combined with stent implantation, 1 patient suffered re-stenosis of the transplant renal artery, which was improved after simple balloon dilatation. One patient developed pseudoaneurysm formation at the puncture site of the right femoral artery. One patient presented with renal atrophy and loss of function due to atresia of the transplant renal artery. All the remaining 18 patients were well recovered after surgery. Conclusions PTA combined with stent implantation is the optimal treatment of TRAS after renal transplantation, which can significantly improve the function of transplant kidney and considerably prolong the survival time of transplant kidney.

Analysis of risk factors and clinical prognosis of acute kidney injury early after lung transplantation

Chen Ao, Lian Qiaoyan, Zhang Jianheng, Xu Xin, Wei Bing, Cai Yuhang, Huang Danxia, He Jianxing, Ju Chunrong

2021, 12(2): 220-225, 231. doi: 10.3969/j.issn.1674-7445.2021.02.014

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Objective To analyze the risk factors and clinical prognosis of acute kidney injury (AKI) early after lung transplantation. Methods Clinical data of 155 recipients undergoing lung transplantation or combined heart-lung transplantation were retrospectively analyzed, and they were divided into the AKI group (n=104) and non-AKI group (n=51) according to the 2012 Kidney Disease: Improving Global Outcomes Clinical Practice Guideline. The incidence of AKI early after lung transplantation was summarized. The main indexes of recipients were collected. The risk factors of the occurrence of AKI early after lung transplantation were subjected to univariate and multivariate analysis. The clinical prognosis of lung transplant recipients was evaluated and the survival curve was delineated. Results The incidence of AKI early after lung transplantation was 67.1%(104/155), including 47 recipients with stage 1 AKI, 34 recipients with stage2 AKI and 23 recipients with stage 3 AKI, respectively. Sixteen recipients required continuous renal replacement therapy (CRRT) early after lung transplantation. Preoperative complication with diabetes mellitus, preoperative complication with pulmonary hypertension, intraoperative mean arterial pressure (MAP) < 60 mmHg, intraoperative massive blood transfusion, and treatment with excessive therapeutic concentration of tacrolimus (Tac) within postoperative 1 week were the independent risk factors for the occurrence of AKI early after lung transplantation. Up to the end of follow-up, 66 recipients (42.6%) died, including 50 recipients in the AKI group and 16 recipients in the non-AKI group. The cumulative survival rate in the AKI group was significantly lower than that in the non-AKI group (40% vs. 66%, P < 0.05). With the increase of AKI severity, the cumulative survival rate of lung transplant recipients was decreased. Conclusions AKI develops early after lung transplantation with high incidence and poor clinical prognosis. Preoperative complication with diabetes mellitus and pulmonary hypertension, intraoperative MAP < 60 mmHg and massive blood transfusion, and treatment with excessive therapeutic concentration of Tac within postoperative 1 week are the independent risk factors for the occurrence of AKI early after lung transplantation.

Review Article

Effect of the regulation of mitochondrial dynamics on renal ischemia-reperfusion injury

Yan Xiaodong, Wang Qiang

2021, 12(2): 226-231. doi: 10.3969/j.issn.1674-7445.2021.02.015

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Ischemia-reperfusion injury (IRI) is one of the main causes of early graft dysfunction after renal transplantation. In China, organ transplantation has entered into the era of organ donation after citizen's death. The increased risk of cardiopulmonary resuscitation, prolonged hypoperfusion time and warm ischemia time of donors may lead to IRI of the graft, and affect the short- and long-term clinical prognosis of the recipient and graft. Under IRI and other stress conditions, the mechanism of mitochondrial dynamics, mainly manifested by dynamic regulation of mitochondrial division and fusion, exert critical effect upon the biological function of mitochondria. Cell apoptosis caused by mitochondrial injury is the key event leading to acute kidney injury, which is mainly manifested by the imbalance of the regulatory mechanism of mitochondrial dynamics. In this article, the research progress on the regulatory mechanism of mitochondrial dynamics on renal IRI was reviewed, aiming to provide reference for improving the clinical outcomes of renal transplantation.

Clinical application and progress on adult donor dual kidney transplantation

Zhang Man, Liu Bin

2021, 12(2): 232-238. doi: 10.3969/j.issn.1674-7445.2021.02.016

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Full application of marginal donor organs is a critical method to expand donor pool and alleviate organ shortage. After accurate donor evaluation, allocation and recipient selection, adult donor dual kidney transplantation (DKT) can not only achieve equivalent clinical efficacy to single kidney transplantation (SKT), but also effectively reduce the discard rate of marginal donor kidney. In this article, the clinical application and progress on adult donor DKT were reviewed from the perspectives of the development situation, allocation standard, recipient selection, surgical methods and complications as well as clinical efficacy of DKT, aiming to provide reference and guidance for subsequent development of marginal donor DKT.

Discussion on heart transplantation indications in patients with end-stage heart failure complicated with reversible pulmonary artery hypertension

Zheng Shanshan, Liu Sheng

2021, 12(2): 239-243. doi: 10.3969/j.issn.1674-7445.2021.02.017

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Heart transplantation can save the life and improve the quality of life of patients with end-stage heart failure. Nevertheless, it is not suitable for all patients with end-stage heart failure. As a common complication of end-stage heart failure, pulmonary artery hypertension may increase the incidence of right heart failure after heart transplantation, which is associated with the short- and long-term fatality risk in the recipients after heart transplantation. In clinical practice, different transplant centers have different criteria for heart transplantation indications in patients with end-stage heart failure complicated with pulmonary artery hypertension. Accurate preoperative evaluation of surgical indications plays a critical role in determining the success of heart transplantation. In this article, the definition, pathogenesis and effects on heart transplantation, diagnostic methods and reversibility judgment of pulmonary artery hypertension, diagnostic treatment of reversible pulmonary artery hypertension and indications of heart transplantation in patients with end-stage heart failure complicated with reversible pulmonary hypertension were reviewed.

Intracapsular infection of polycystic kidney disease and renal transplantation

Li Xuelin, Miao Yun

2021, 12(2): 244-248. doi: 10.3969/j.issn.1674-7445.2021.02.018

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Autosomal dominant polycystic kidney disease (ADPKD) is a common monogenic hereditary kidney disease, which can progress into end-stage renal disease (ESRD). Patients with ADPKD constantly suffer from recurrent intracapsular infection. The drug resistance caused by antibiotic treatment is becoming increasingly prominent. The pattern of renal transplantation should be selected according to the infection of polycystic kidney disease. In this article, the origin of renal cyst, classification and source of cystic fluid, type and drug resistance of bacteria in the cystic fluid, and intracapsular infection of patients with renal transplantation- associated ADPKD were reviewed, aiming to provide reference for the diagnosis and treatment of intracapsular infection of patients with ADPKD.