Acute complicated diverticulitis, particularly with colon perforation, is a rare but serious condition in transplant recipients with high morbidity and mortality. Neither acute diverticulitis nor colon perforation has...Acute complicated diverticulitis, particularly with colon perforation, is a rare but serious condition in transplant recipients with high morbidity and mortality. Neither acute diverticulitis nor colon perforation has been reported in young heart-lung grafted patients. A case of subclinical peritonitis due to perforated acute sigmoid diverticulitis 14 years after heart-lung transplantation is reported. A 26-year-old woman, who received heart-lung transplantation 14 years ago, presented with vague abdominal pain. Physical examination was normal. Blood tests revealed leukocytosis. Abdominal X-ray showed air-fluid levels while CT demonstrated peritonitis due to perforated sigmoid diverticulitis. Sigmoidectomy and end-colostomy (Hartmann's procedure) were performed. Histopathology confirmed perforated acute sigmoid diverticulitis. The patient was discharged on the 8th postoperative day after an uneventful postoperative course. This is the first report of acute diverticulitis resulting in colon perforation in a young heart-lung transplanted patient. Clinical presentation, even in peritonitis, may be atypical due to the masking effects of immunosuppression. A high index of suspicion, urgent aggressive diagnostic investigationof even vague abdominal symptoms, adjustment of immunosuppression, broad-spectrum antibiotics, and immediate surgical treatment are critical. Moreover, strategies to reduce the risk of this complication should be implemented. Pretransplantation colon screening, prophylactic pretransplantation sigmoid resection in patients with diverticulosis, and elective surgical intervention in patients with nonoperatively treated acute diverticulitis after transplantation deserve consideration and further studies.展开更多
Hepatitis C virus(HCV) infection is estimated to affect 130-150 million people globally which corresponds to2%-3% of the total world population. It remains the leading indication for liver transplant worldwide and has...Hepatitis C virus(HCV) infection is estimated to affect 130-150 million people globally which corresponds to2%-3% of the total world population. It remains the leading indication for liver transplant worldwide and has been demonstrated to negatively impact both patient and graft survival following non-hepatic organ transplantation. In the era of interferon-based therapy, although treatment and cure of HCV prior to nonhepatic transplant improved survival, tolerability and low cure rates substantially limited therapy. Interferon(IFN)-based therapy following non-hepatic solid organ transplant, due to the risk of allograft rejection, is generally contraindicated. Rapid advances in IFN-free therapy with direct acting antivirals(DAAs) in the last few years have completely changed the paradigm of hepatitis C therapy. Compared to IFN-based regimens, DAAs have less frequent and less severe adverse effects, shorter durations of therapy, and higher cure rates that are minimally impacted by historically negative predictors of response such as cirrhosis, ethnicity, and post-transplant state. Recent studies have shown that liver transplant(LT) recipients can be safely and effectively treated with DAA combination therapies; although data are limited, many of the principles of therapy in LT may be extrapolated to non-hepatic solid organ transplant recipients. Here we review the data on DAA combination therapies in transplantation, discuss the advantages and disadvantages of pre- vs post-transplant HCV therapy and future directions.展开更多
Innovative and exciting advances in the clinical science in solid organ transplantation continuously realize as the results of studies, clinical trials, international conferences, consensus conferences, new technologi...Innovative and exciting advances in the clinical science in solid organ transplantation continuously realize as the results of studies, clinical trials, international conferences, consensus conferences, new technologies and discoveries. This review will address to the full spectrum of news in transplantation, that verified by 2013. The key areas covered are the transplantation activity, with particular regards to the donors, the news for solid organs such as kidney, pancreas, liver, heart and lung, the news in immunosuppressive therapies, the news in the field of tolerance and some of the main complications following transplantation as infections and cancers. The period of time covered by the study starts from the international meetings held in 2012, whose results were published in 2013, up to the 2013 meetings, conferences and consensus published in the first months of 2014. In particular for every organ, the trends in numbers and survival have been reviewed as well as the most relevant problems such as organ preservation, ischemia reperfusion injuries, and rejections with particular regards to the antibody mediated rejection that involves all solid organs. The new drugs and strategies applied in organ transplantation have been divided into new way of using old drugs or strategies and drugs new not yet on the market, but on phase Ⅰto Ⅲ of clinical studies and trials.展开更多
Glucocorticoids(GCs)have been the mainstay of immunosuppressive therapy in solid organ transplantation(SOT)for decades,due to their potent effects on innate immunity and tissue protective effects.However,some SOT cent...Glucocorticoids(GCs)have been the mainstay of immunosuppressive therapy in solid organ transplantation(SOT)for decades,due to their potent effects on innate immunity and tissue protective effects.However,some SOT centers are reluctant to administer GCs long-term because of the various related side effects.This review summarizes the advantages and disadvantages of GCs in SOT.PubMed and Scopus databases were searched from 2011 to April 2021 using search syntaxes covering“transplantation”and“glucocorticoids”.GCs are used in transplant recipients,transplant donors,and organ perfusate solution to improve transplant outcomes.In SOT recipients,GCs are administered as induction and maintenance immunosuppressive therapy.GCs are also the cornerstone to treat acute antibody-and T-cell-mediated rejections.Addition of GCs to organ perfusate solution and pretreatment of transplant donors with GCs are recommended by some guidelines and protocols,to reduce ischemia-reperfusion injury peri-transplant.GCs with low bioavailability and high potency for GC receptors,such as budesonide,nanoparticle-mediated targeted delivery of GCs to specific organs,and combination use of dexamethasone with inducers of immuneregulatory cells,are new methods of GC application in SOT patients to reduce side effects or induce immune-tolerance instead of immunosuppression.Various side effects involving different non-targeted organs/tissues,such as bone,cardiovascular,neuromuscular,skin and gastrointestinal tract,have been noted for GCs.There are also potential drug-drug interactions for GCs in SOT patients.展开更多
Donor-to-recipient organ size matching is a critical aspect of thoracic transplantation. In the United States potential recipients for lung transplant and heart transplant are listed with limitations on donor height a...Donor-to-recipient organ size matching is a critical aspect of thoracic transplantation. In the United States potential recipients for lung transplant and heart transplant are listed with limitations on donor height and weight ranges, respectively. Height is used as a surrogate for lung size and weight is used as a surrogate for heart size. While these measures are important predictors of organ size, they are crude surrogates that fail to incorporate the influence of sex on organ size. Independent of other measures, a man's thoracic organs are approximately 20% larger than a woman's. Lung size can be better estimated using the predicted total lung capacity, which is derived from regression equations correcting for height, sex and age. Similarly, heart size can be better estimated using the predicted heart mass, which adjusts for sex, age, height, and weight. These refined organ sizing measures perform better than current sizing practice for the prediction of outcomes after transplantation, and largely explain the outcome differences observed after sex-mismatch transplantation. An undersized allograft is associated with worse outcomes. In this review we examine current data pertaining to size-matching in thoracic transplantation. We advocate for a change in the thoracic allocation mechanism from a height-or-weightbased strategy to a size-matching process that utilizes refined estimates of organ size. We believe that a size-matching approach based on refined estimates of organ size would optimize outcomes in thoracic transplantation without restricting or precluding patients from thoracic transplantation.展开更多
Solid organ transplantation is limited by suitable donor organ availability and the geographic limitations that lead to prolonged ischemic times. Ex vivo organ perfusion is an evolving technology that enables assessme...Solid organ transplantation is limited by suitable donor organ availability and the geographic limitations that lead to prolonged ischemic times. Ex vivo organ perfusion is an evolving technology that enables assessment of organ function prior to transplantation. As a byproduct, overall out of body organ times are able to be extended. The future implications organ assessment and repair centers utilizing this technology are discussed.展开更多
From September 2006 to January 2007, 2 patients with end-staged heart and lung disease （congenital disease,Eisenmenger＇s syndrome, severe pulmonary artery hypertension and heart failure） underwent heart and lung tr...From September 2006 to January 2007, 2 patients with end-staged heart and lung disease （congenital disease,Eisenmenger＇s syndrome, severe pulmonary artery hypertension and heart failure） underwent heart and lung transplantation （HLT） at the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.展开更多
目的总结分析1例心肺移植患者术后5年随访时移植物功能变化及影响长期存活的关键因素。方法2003年12月复旦大学中山医院为1例房间隔缺损并重度肺动脉高压心肺功能衰竭的患者施行心肺联合移植术。供体心肺以1 000 mL UW液及4 000 mL HTK...目的总结分析1例心肺移植患者术后5年随访时移植物功能变化及影响长期存活的关键因素。方法2003年12月复旦大学中山医院为1例房间隔缺损并重度肺动脉高压心肺功能衰竭的患者施行心肺联合移植术。供体心肺以1 000 mL UW液及4 000 mL HTK液保存。术后抗排异治疗方案采用达昔单抗、环孢霉素A(或他克莫司)、霉酚酸酯及激素四联方案,环孢霉素A谷浓度维持在100～200μg/L,他克莫司谷浓度维持在8～20μg/L。术后定期复查超声心动图、肺功能及胸部CT评估心肺功能。结果随访时患者存活已达5年6个月。心功能恢复为(NYHA)Ⅰ～Ⅱ级,左心室射血分数65%～86%。肺功能检查氧和指标稳定,术后1年开始出现小气道气流受阻表现但保持稳定。随访中出现2次严重肺部感染,经联合应用抗细菌及真菌药物治愈,无急性排斥反应事件发生。结论心肺联合移植是治疗心肺功能衰竭的有效方法,良好的供体保护、准确平衡抗排斥反应与感染的关系,以及严格预防和治疗感染是患者长期存活的关键因素。展开更多
文摘Acute complicated diverticulitis, particularly with colon perforation, is a rare but serious condition in transplant recipients with high morbidity and mortality. Neither acute diverticulitis nor colon perforation has been reported in young heart-lung grafted patients. A case of subclinical peritonitis due to perforated acute sigmoid diverticulitis 14 years after heart-lung transplantation is reported. A 26-year-old woman, who received heart-lung transplantation 14 years ago, presented with vague abdominal pain. Physical examination was normal. Blood tests revealed leukocytosis. Abdominal X-ray showed air-fluid levels while CT demonstrated peritonitis due to perforated sigmoid diverticulitis. Sigmoidectomy and end-colostomy (Hartmann's procedure) were performed. Histopathology confirmed perforated acute sigmoid diverticulitis. The patient was discharged on the 8th postoperative day after an uneventful postoperative course. This is the first report of acute diverticulitis resulting in colon perforation in a young heart-lung transplanted patient. Clinical presentation, even in peritonitis, may be atypical due to the masking effects of immunosuppression. A high index of suspicion, urgent aggressive diagnostic investigationof even vague abdominal symptoms, adjustment of immunosuppression, broad-spectrum antibiotics, and immediate surgical treatment are critical. Moreover, strategies to reduce the risk of this complication should be implemented. Pretransplantation colon screening, prophylactic pretransplantation sigmoid resection in patients with diverticulosis, and elective surgical intervention in patients with nonoperatively treated acute diverticulitis after transplantation deserve consideration and further studies.
文摘Hepatitis C virus(HCV) infection is estimated to affect 130-150 million people globally which corresponds to2%-3% of the total world population. It remains the leading indication for liver transplant worldwide and has been demonstrated to negatively impact both patient and graft survival following non-hepatic organ transplantation. In the era of interferon-based therapy, although treatment and cure of HCV prior to nonhepatic transplant improved survival, tolerability and low cure rates substantially limited therapy. Interferon(IFN)-based therapy following non-hepatic solid organ transplant, due to the risk of allograft rejection, is generally contraindicated. Rapid advances in IFN-free therapy with direct acting antivirals(DAAs) in the last few years have completely changed the paradigm of hepatitis C therapy. Compared to IFN-based regimens, DAAs have less frequent and less severe adverse effects, shorter durations of therapy, and higher cure rates that are minimally impacted by historically negative predictors of response such as cirrhosis, ethnicity, and post-transplant state. Recent studies have shown that liver transplant(LT) recipients can be safely and effectively treated with DAA combination therapies; although data are limited, many of the principles of therapy in LT may be extrapolated to non-hepatic solid organ transplant recipients. Here we review the data on DAA combination therapies in transplantation, discuss the advantages and disadvantages of pre- vs post-transplant HCV therapy and future directions.
文摘Innovative and exciting advances in the clinical science in solid organ transplantation continuously realize as the results of studies, clinical trials, international conferences, consensus conferences, new technologies and discoveries. This review will address to the full spectrum of news in transplantation, that verified by 2013. The key areas covered are the transplantation activity, with particular regards to the donors, the news for solid organs such as kidney, pancreas, liver, heart and lung, the news in immunosuppressive therapies, the news in the field of tolerance and some of the main complications following transplantation as infections and cancers. The period of time covered by the study starts from the international meetings held in 2012, whose results were published in 2013, up to the 2013 meetings, conferences and consensus published in the first months of 2014. In particular for every organ, the trends in numbers and survival have been reviewed as well as the most relevant problems such as organ preservation, ischemia reperfusion injuries, and rejections with particular regards to the antibody mediated rejection that involves all solid organs. The new drugs and strategies applied in organ transplantation have been divided into new way of using old drugs or strategies and drugs new not yet on the market, but on phase Ⅰto Ⅲ of clinical studies and trials.
文摘Glucocorticoids(GCs)have been the mainstay of immunosuppressive therapy in solid organ transplantation(SOT)for decades,due to their potent effects on innate immunity and tissue protective effects.However,some SOT centers are reluctant to administer GCs long-term because of the various related side effects.This review summarizes the advantages and disadvantages of GCs in SOT.PubMed and Scopus databases were searched from 2011 to April 2021 using search syntaxes covering“transplantation”and“glucocorticoids”.GCs are used in transplant recipients,transplant donors,and organ perfusate solution to improve transplant outcomes.In SOT recipients,GCs are administered as induction and maintenance immunosuppressive therapy.GCs are also the cornerstone to treat acute antibody-and T-cell-mediated rejections.Addition of GCs to organ perfusate solution and pretreatment of transplant donors with GCs are recommended by some guidelines and protocols,to reduce ischemia-reperfusion injury peri-transplant.GCs with low bioavailability and high potency for GC receptors,such as budesonide,nanoparticle-mediated targeted delivery of GCs to specific organs,and combination use of dexamethasone with inducers of immuneregulatory cells,are new methods of GC application in SOT patients to reduce side effects or induce immune-tolerance instead of immunosuppression.Various side effects involving different non-targeted organs/tissues,such as bone,cardiovascular,neuromuscular,skin and gastrointestinal tract,have been noted for GCs.There are also potential drug-drug interactions for GCs in SOT patients.
基金Supported by Flight Attendants Medical Research Institute in part(to Robert M Reed)Michael Eberlein is supported by a PILOT grant from the Institute for Clinical and Translational Science(ICTS)at the University of Iowa via the National Institutes of Health(NIH)Clinical and Translational Science Award(CTSA)program,grant 2 UL1 TR000442-06
文摘Donor-to-recipient organ size matching is a critical aspect of thoracic transplantation. In the United States potential recipients for lung transplant and heart transplant are listed with limitations on donor height and weight ranges, respectively. Height is used as a surrogate for lung size and weight is used as a surrogate for heart size. While these measures are important predictors of organ size, they are crude surrogates that fail to incorporate the influence of sex on organ size. Independent of other measures, a man's thoracic organs are approximately 20% larger than a woman's. Lung size can be better estimated using the predicted total lung capacity, which is derived from regression equations correcting for height, sex and age. Similarly, heart size can be better estimated using the predicted heart mass, which adjusts for sex, age, height, and weight. These refined organ sizing measures perform better than current sizing practice for the prediction of outcomes after transplantation, and largely explain the outcome differences observed after sex-mismatch transplantation. An undersized allograft is associated with worse outcomes. In this review we examine current data pertaining to size-matching in thoracic transplantation. We advocate for a change in the thoracic allocation mechanism from a height-or-weightbased strategy to a size-matching process that utilizes refined estimates of organ size. We believe that a size-matching approach based on refined estimates of organ size would optimize outcomes in thoracic transplantation without restricting or precluding patients from thoracic transplantation.
文摘Solid organ transplantation is limited by suitable donor organ availability and the geographic limitations that lead to prolonged ischemic times. Ex vivo organ perfusion is an evolving technology that enables assessment of organ function prior to transplantation. As a byproduct, overall out of body organ times are able to be extended. The future implications organ assessment and repair centers utilizing this technology are discussed.
文摘From September 2006 to January 2007, 2 patients with end-staged heart and lung disease （congenital disease,Eisenmenger＇s syndrome, severe pulmonary artery hypertension and heart failure） underwent heart and lung transplantation （HLT） at the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.
文摘目的总结分析1例心肺移植患者术后5年随访时移植物功能变化及影响长期存活的关键因素。方法2003年12月复旦大学中山医院为1例房间隔缺损并重度肺动脉高压心肺功能衰竭的患者施行心肺联合移植术。供体心肺以1 000 mL UW液及4 000 mL HTK液保存。术后抗排异治疗方案采用达昔单抗、环孢霉素A(或他克莫司)、霉酚酸酯及激素四联方案,环孢霉素A谷浓度维持在100～200μg/L,他克莫司谷浓度维持在8～20μg/L。术后定期复查超声心动图、肺功能及胸部CT评估心肺功能。结果随访时患者存活已达5年6个月。心功能恢复为(NYHA)Ⅰ～Ⅱ级,左心室射血分数65%～86%。肺功能检查氧和指标稳定,术后1年开始出现小气道气流受阻表现但保持稳定。随访中出现2次严重肺部感染,经联合应用抗细菌及真菌药物治愈,无急性排斥反应事件发生。结论心肺联合移植是治疗心肺功能衰竭的有效方法,良好的供体保护、准确平衡抗排斥反应与感染的关系,以及严格预防和治疗感染是患者长期存活的关键因素。
