1
|
Protective Role of the Portocaval Shunt in Liver Transplantation. Transplant Proc 2020; 52:1455-1458. [PMID: 32217010 DOI: 10.1016/j.transproceed.2020.01.089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Accepted: 01/10/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Advances in medical management and surgical technique have resulted in stepwise improvements in early post-transplant survival rates. Modifications in the surgical technique, such as the realization of the portocaval shunt (PCS), could influence survival rates. The aim of this study was to evaluate the mortality rate for 12 months after liver transplantation, analyzing the causes and risk factors related to its development and assessing the impact that PCS could have on them. METHODS A total of 231 recipients were included in the retrospective, longitudinal, and nonrandomized study. RESULTS The overall survival of the transplant was 85.2% (197 patients). The most frequent cause of death was infection (38.2%), followed by the multiorgan failure of multiple etiology (23.5%). Most of the risk factors related to mortality correspond to variables of the postoperative period. The results of the multivariate analysis identified the main risk factors for death: the presence of surgical complications and the need for renal replacement therapy. In contrast, the performance of PCS exerted a protective effect, reducing the probability of death by 70%. CONCLUSIONS Despite the good results obtained in several studies, there is still debate regarding the benefit of its realization. In our study, PCS was a factor associated with a reduction in mortality, with a markedly lower probability of adverse events. However, we agree with other authors on the need for larger and randomized studies to adequately determine the validity of such results.
Collapse
|
2
|
Bacterial DNA translocation contributes to systemic inflammation and to minor changes in the clinical outcome of liver transplantation. Sci Rep 2019; 9:835. [PMID: 30696924 PMCID: PMC6351615 DOI: 10.1038/s41598-018-36904-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 11/21/2018] [Indexed: 12/19/2022] Open
Abstract
Bacterial (bact)DNA is an immunogenic product that frequently translocates into the blood in cirrhosis. We evaluated bactDNA clearance in patients undergoing liver transplantation (LT) and its association with inflammation and clinically relevant complications. We prospectively included patients consecutively admitted for LT in a one-year follow-up study. We evaluated bactDNA before and during the first month after LT, quantifying cytokine response at 30 days. One hundred patients were included. BactDNA was present in the blood of twenty-six patients undergoing LT. Twenty-four of these showed bactDNA in the portal vein, matching peripheral blood-identified bactDNA in 18 cases. Thirty-four patients showed bactDNA in blood during the first month after LT. Median TNF-α and IL-6 levels one month after LT were significantly increased in patients with versus without bactDNA. Serum TNF-α at baseline was an independent risk factor for bactDNA translocation during the first month after LT in the multivariate analysis (Odds ratio (OR) 1.14 [1.04 to 1.29], P = 0.015). One-year readmission was independently associated with the presence of bactDNA during the first month after LT (Hazard ratio (HR) 2.75 [1.39 to 5.45], P = 0.004). The presence of bactDNA in the blood of LT recipients was not shown to have any impact on complications such as death, graft rejection, bacterial or CMV infections. The rate of bactDNA translocation persists during the first month after LT and contributes to sustained inflammation. This is associated with an increased rate of readmissions in the one-year clinical outcome after LT.
Collapse
|
3
|
Zhu R, Fang H, Cao S, Chen S, Zhou P, Lei P. Effect of Methylprednisolone on Liver Injury and Endotoxin Levels Following Brain Death in Rats. Transplant Proc 2018; 50:3845-3850. [PMID: 30577276 DOI: 10.1016/j.transproceed.2018.08.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 07/18/2018] [Accepted: 08/03/2018] [Indexed: 12/20/2022]
Abstract
BACKGROUND AND AIM Brain death impairs liver function in potential donors and is associated with inflammatory activation. Methylprednisolone treatment after brain death has been shown to reduce inflammatory activity. The aim of the present study was to evaluate the effects of methylprednisolone on liver injury and endotoxin levels in brain-dead rats. METHODS Thirty-two rats were randomly divided into 4 groups: a sham-operation group (Sham group), a brain death with methylprednisolone treatment group (Methy group), a brain death with saline treatment group (Saline group), and a brain death group (BD group). The rats were anesthetized and induced by gradually increasing the intra-cranial pressure using a Fogarty catheter balloon for brain death. All of the animals were observed and ventilated for 6 h prior to being euthanized. Hepatic pathologic histology (Knodell histology activity index), liver inflammatory cytokine levels, liver function and endotoxin levels were assessed. RESULTS After brain death, methylprednisolone markedly alleviated the Knodell histology activity index of liver injury (P < .05). Additionally, significant reductions in the levels of TNF-α, IL-1β, and IL-10 were observed in the Methy group compared to those in the Saline and BD groups (P < .01), whereas no significant differences were found between the Saline and BD groups (P > .05). Interestingly, although the rate of liver injury after brain death in the methylprednisolone treatment group improved, the endotoxin level did not decline in the Methy group compared to the levels in the Saline and BD groups (P > .05). CONCLUSION The present study verified that methylprednisolone was protective for liver injury in rats subjected to brain death. This protection appeared to be due to reduced inflammatory activity with no influence on the endotoxin level.
Collapse
Affiliation(s)
- R Zhu
- Department of Hepatobiliary and Pancreatic Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.
| | - H Fang
- Department of Hepatobiliary and Pancreatic Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - S Cao
- Department of Hepatobiliary and Pancreatic Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - S Chen
- Department of Hepatobiliary and Pancreatic Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - P Zhou
- Department of Hepatobiliary and Pancreatic Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - P Lei
- Department of Hepatobiliary and Pancreatic Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| |
Collapse
|
4
|
Rayar M, Levi Sandri GB, Cusumano C, Locher C, Houssel-Debry P, Camus C, Lombard N, Desfourneaux V, Lakehal M, Meunier B, Sulpice L, Boudjema K. Benefits of temporary portocaval shunt during orthotopic liver transplantation with vena cava preservation: A propensity score analysis. Liver Transpl 2017; 23:174-183. [PMID: 27706895 DOI: 10.1002/lt.24650] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 09/20/2016] [Accepted: 09/26/2016] [Indexed: 02/07/2023]
Abstract
During orthotopic liver transplantation (OLT), clamping of the portal vein induces splanchnic venous congestion and accumulation of noxious compounds. These adverse effects could increase ischemia/reperfusion injury and subsequently the risk of graft dysfunction, especially for grafts harvested from extended criteria donors (ECDs). Temporary portocaval shunt (TPCS) could prevent these complications. Between 2002 and 2013, all OLTs performed in our center were retrospectively analyzed and a propensity score matching analysis was used to compare the effect of TPCS in 686 patients (343 in each group). Patients in the TPCS group required fewer intraoperative transfusions (median number of packed red blood cells-5 versus 6; P = 0.02; median number of fresh frozen plasma-5 versus 6; P = 0.02); had improvement of postoperative biological parameters (prothrombin time, Factor V, international normalized ratio, alkaline phosphatase, and gamma-glutamyltransferase levels); and showed significant reduction of biliary complications (4.7% versus 10.2%; P = 0.006). Survival analysis revealed that TPCS improved 3-month graft survival (94.2% versus 88.6%; P = 0.01) as well as longterm survival of elderly (ie, age > 70 years) donor grafts (P = 0.02). In conclusion, the use of TPCS should be recommended especially when considering an ECD graft. Liver Transplantation 23 174-183 2017 AASLD.
Collapse
Affiliation(s)
- Michel Rayar
- Service de Chirurgie Hépatobiliaire et Digestive, Centre Hospitalier Universitaire Rennes, Rennes, France.,INSERM, CIC 1414, Rennes, France.,Faculté de Médecine, Université Rennes 1, Rennes, France
| | - Giovanni B Levi Sandri
- Service de Chirurgie Hépatobiliaire et Digestive, Centre Hospitalier Universitaire Rennes, Rennes, France
| | - Caterina Cusumano
- Service de Chirurgie Hépatobiliaire et Digestive, Centre Hospitalier Universitaire Rennes, Rennes, France
| | - Clara Locher
- Service de Pharmacologie Clinique et Épidémiologique, Centre Hospitalier Universitaire Rennes, Rennes, France.,INSERM, CIC 1414, Rennes, France.,Faculté de Médecine, Université Rennes 1, Rennes, France
| | - Pauline Houssel-Debry
- Service des Maladies du Foie, Centre Hospitalier Universitaire Rennes, Rennes, France
| | - Christophe Camus
- Réanimation Médicale, Centre Hospitalier Universitaire Rennes, Rennes, France.,INSERM, CIC 1414, Rennes, France
| | - Nicolas Lombard
- Service de Chirurgie Hépatobiliaire et Digestive, Centre Hospitalier Universitaire Rennes, Rennes, France
| | - Veronique Desfourneaux
- Service de Chirurgie Hépatobiliaire et Digestive, Centre Hospitalier Universitaire Rennes, Rennes, France
| | - Mohamed Lakehal
- Service de Chirurgie Hépatobiliaire et Digestive, Centre Hospitalier Universitaire Rennes, Rennes, France
| | - Bernard Meunier
- Service de Chirurgie Hépatobiliaire et Digestive, Centre Hospitalier Universitaire Rennes, Rennes, France.,Faculté de Médecine, Université Rennes 1, Rennes, France
| | - Laurent Sulpice
- Service de Chirurgie Hépatobiliaire et Digestive, Centre Hospitalier Universitaire Rennes, Rennes, France.,INSERM, CIC 1414, Rennes, France.,Faculté de Médecine, Université Rennes 1, Rennes, France
| | - Karim Boudjema
- Service de Chirurgie Hépatobiliaire et Digestive, Centre Hospitalier Universitaire Rennes, Rennes, France.,INSERM, CIC 1414, Rennes, France.,Faculté de Médecine, Université Rennes 1, Rennes, France
| |
Collapse
|
5
|
Reiling J, Bridle KR, Gijbels M, Schaap FG, Jaskowski L, Santrampurwala N, Britton LJ, Campbell CM, Olde Damink SWM, Crawford DHG, Dejong CHC, Fawcett J. Low-Dose Lipopolysaccharide Causes Biliary Injury by Blood Biliary Barrier Impairment in a Rat Hepatic Ischemia/Reperfusion Model. Liver Transpl 2017; 23:194-206. [PMID: 27880979 DOI: 10.1002/lt.24681] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 11/10/2016] [Indexed: 02/07/2023]
Abstract
This study explored whether bacterial endotoxins, in the form of lipopolysaccharides (LPS), could have an injurious effect on the biliary tract in conjunction with ischemia. A total of 64 rats were randomly assigned to 4 groups: sham operation (sham group), 1 mg/kg LPS intraperitoneal (LPS group), hepatic ischemia/reperfusion (IR; IR group), and IR combined with LPS (IR+LPS group). Following 1 or 6 hours of reperfusion, serum liver tests, bile duct histology, immunofluorescence microscopy (zonula occludens-1 [ZO-1]), bile composition (bile salts, phospholipids, lactate dehydrogenase), hepatic gene expression (bile salt transporters and inflammatory mediators), as well as serum and biliary cytokine concentrations were quantified and compared between the study groups. In addition, the integrity of the blood biliary barrier (BBB) was assayed in vivo using horseradish peroxidase (HRP). LPS administration induced severe small bile duct injury following 6 hours of reperfusion. Furthermore, total bile salts and bilirubin concentrations in serum were increased in the LPS groups compared with sham controls (LPS, + 3.3-fold and +1.9-fold; IR+LPS, + 3.8-fold and +1.7-fold, respectively). The BBB was impaired in the LPS groups as evidenced by elevated levels of HRP in bile (+4.9-fold), and decreased expression of claudin 1 (-6.7-fold) and claudin 3 (-3.6-fold). LPS was found to be a potent inducer of small bile duct injury following hepatic ischemia and 6 hours of reperfusion. This injury was associated with increased permeability of the BBB and impaired hepatic bile salt clearance. Liver Transplantation 23 194-206 2017 AASLD.
Collapse
Affiliation(s)
- Janske Reiling
- School of Medicine, The University of Queensland, Brisbane, Australia.,Gallipoli Medical Research Institute, Greenslopes Private Hospital, Brisbane, Australia.,PA Research Foundation, Princess Alexandra Hospital, Brisbane, Australia.,Department of Surgery, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, the Netherlands
| | - Kim R Bridle
- School of Medicine, The University of Queensland, Brisbane, Australia.,Gallipoli Medical Research Institute, Greenslopes Private Hospital, Brisbane, Australia
| | - Marion Gijbels
- Departments of Pathology.,Molecular Genetics, Cardiovascular Research Institute Maastricht, the Netherlands.,Department of Medical Biochemistry, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Frank G Schaap
- Department of Surgery, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, the Netherlands
| | - Lesley Jaskowski
- School of Medicine, The University of Queensland, Brisbane, Australia.,Gallipoli Medical Research Institute, Greenslopes Private Hospital, Brisbane, Australia
| | - Nishreen Santrampurwala
- School of Medicine, The University of Queensland, Brisbane, Australia.,Gallipoli Medical Research Institute, Greenslopes Private Hospital, Brisbane, Australia
| | - Laurence J Britton
- School of Medicine, The University of Queensland, Brisbane, Australia.,Gallipoli Medical Research Institute, Greenslopes Private Hospital, Brisbane, Australia
| | | | - Steven W M Olde Damink
- Department of Surgery, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, the Netherlands.,Department of HPB Surgery and Liver Transplantation, Institute for Liver and Digestive Health, Royal Free Hospitals, University College London, London, UK
| | - Darrell H G Crawford
- School of Medicine, The University of Queensland, Brisbane, Australia.,Gallipoli Medical Research Institute, Greenslopes Private Hospital, Brisbane, Australia
| | - Cornelius H C Dejong
- Department of Surgery, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, the Netherlands.,Department of Surgery, RWTH Universitätsklinikum Aachen, Aachen, Germany
| | - Jonathan Fawcett
- School of Medicine, The University of Queensland, Brisbane, Australia.,Gallipoli Medical Research Institute, Greenslopes Private Hospital, Brisbane, Australia.,PA Research Foundation, Princess Alexandra Hospital, Brisbane, Australia.,Queensland Liver Transplant Service, Princess Alexandra Hospital, Brisbane, Australia
| |
Collapse
|
6
|
Shao Z, Jiao B, Liu T, Cheng Y, Liu H, Liu Y. TAK-242 treatment ameliorates liver ischemia/reperfusion injury by inhibiting TLR4 signaling pathway in a swine model of Maastricht-category-III cardiac death. Biomed Pharmacother 2016; 84:495-501. [PMID: 27685793 DOI: 10.1016/j.biopha.2016.09.036] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 08/16/2016] [Accepted: 09/11/2016] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVES This study aims to test the effects of TAK-242 on liver transplant viability in a model of swine Maastricht-category-III cardiac death. METHODS A swine DCD Maastricht-III model of cardiac death was established, and TAK-242 was administered prior to the induction of cardiac death. The protein and mRNA level of TLR4 signaling pathway molecules and cytokines that are important in mediating immune and inflammatory responses were assessed at different time points following the induction of cardiac death. RESULTS After induction of cardiac death, both the mRNA and protein levels of key molecules (TLR4, TRAF6, NF-ϰB, ICAM-1, MCP-1 and MPO), TNF-α and IL-6 increased significantly. Infusion of TAK-242 1h before induction of cardiac death blocked the increase of immune and inflammatory response molecules. However, the increase of TLR4 level was not affected by infusion of TAK-242. Histology study showed that infusion of TAK-242 protect liver tissue from damage during cardiac death. CONCLUSIONS These results indicates that TLR4 signaling pathway may contribute to ischemia/reperfusion injury in the liver grafts, and blocking TLR4 pathway with TAk-242 may reduce TLR4-mediated tissue damage.
Collapse
Affiliation(s)
- Zigong Shao
- Department of Organ transplantation, The First Hospital of China Medical University, Shenyang 110001, China
| | - Baoping Jiao
- Department of General Surgery, The First Hospital of Liaoning Medical University, Jinzhou 121000, China
| | - Tingting Liu
- Department of Organ transplantation, The First Hospital of China Medical University, Shenyang 110001, China
| | - Ying Cheng
- Department of Organ transplantation, The First Hospital of China Medical University, Shenyang 110001, China.
| | - Hao Liu
- Department of Organ transplantation, The First Hospital of China Medical University, Shenyang 110001, China
| | - Yongfeng Liu
- Department of Organ transplantation, The First Hospital of China Medical University, Shenyang 110001, China
| |
Collapse
|
7
|
Lei YM, Chen L, Wang Y, Stefka AT, Molinero LL, Theriault B, Aquino-Michaels K, Sivan AS, Nagler CR, Gajewski TF, Chong AS, Bartman C, Alegre ML. The composition of the microbiota modulates allograft rejection. J Clin Invest 2016; 126:2736-44. [PMID: 27322054 DOI: 10.1172/jci85295] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 05/04/2016] [Indexed: 02/06/2023] Open
Abstract
Transplantation is the only cure for end-stage organ failure, but without immunosuppression, T cells rapidly reject allografts. While genetic disparities between donor and recipient are major determinants of the kinetics of transplant rejection, little is known about the contribution of environmental factors. Because colonized organs have worse transplant outcome than sterile organs, we tested the influence of host and donor microbiota on skin transplant rejection. Compared with untreated conventional mice, pretreatment of donors and recipients with broad-spectrum antibiotics (Abx) or use of germ-free (GF) donors and recipients resulted in prolonged survival of minor antigen-mismatched skin grafts. Increased graft survival correlated with reduced type I IFN signaling in antigen-presenting cells (APCs) and decreased priming of alloreactive T cells. Colonization of GF mice with fecal material from untreated conventional mice, but not from Abx-pretreated mice, enhanced the ability of APCs to prime alloreactive T cells and accelerated graft rejection, suggesting that alloimmunity is modulated by the composition of microbiota rather than the quantity of bacteria. Abx pretreatment of conventional mice also delayed rejection of major antigen-mismatched skin and MHC class II-mismatched cardiac allografts. This study demonstrates that Abx pretreatment prolongs graft survival, suggesting that targeting microbial constituents is a potential therapeutic strategy for enhancing graft acceptance.
Collapse
|
8
|
Fayed NA, Sayed EI, Saleh SM, Ehsan NA, Elfert AY. Effect of dexmedetomidine on hepatic ischemia-reperfusion injury in the setting of adult living donor liver transplantation. Clin Transplant 2016; 30:470-82. [DOI: 10.1111/ctr.12713] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/01/2016] [Indexed: 12/14/2022]
Affiliation(s)
- Nirmeen A. Fayed
- Anesthesia and Intensive Care; National Liver Institute; Menoufia University; ShebeenAlkoom Menoufia Egypt
| | - Eman I. Sayed
- Anesthesia and Intensive Care; National Liver Institute; Menoufia University; ShebeenAlkoom Menoufia Egypt
| | - Sherif M. Saleh
- Hepatobiliary Surgery; National Liver Institute; Menoufia University; ShebeenAlkoom Menoufia Egypt
| | - Nermen A. Ehsan
- Pathology; National Liver Institute; Menoufia University; ShebeenAlkoom Menoufia Egypt
| | - Ashraf Y. Elfert
- Clinical Biochemistry; National Liver Institute; Menoufia University; ShebeenAlkoom Menoufia Egypt
| |
Collapse
|
9
|
Intereukin-10 and Kupffer cells protect steatotic mice livers from ischemia-reperfusion injury. Eur Cytokine Netw 2015; 25:69-76. [PMID: 25679269 DOI: 10.1684/ecn.2015.0359] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Steatotic livers are more sensitive to ischemia/reperfusion (I/R) and are thus routinely rejected for transplantation because of their increased rate of primary nonfunction (PNF). Lean livers have less I/R-induced damage and inflammation due to Kupffer cells (KC), which are protective after total, warm, hepatic I/R with associated bowel congestion. This protection has been linked to KC-dependent expression of the potent anti-inflammatory cytokine interleukin-10 (IL-10). We hypothesized that pretreatment with exogenous IL-10 would protect the steatotic livers of genetically obese (ob/ob) mice from inflammation and injury induced by I/R. Lean and ob/ob mice were pretreated with either IL-10 or liposomally-encapsulated bisphosphonate clodronate (shown to deplete KC) prior to total, warm, hepatic I/R. IL-10 pretreatment increased survival of ob/ob animals at 24 hrs post-I/R from 30% to 100%, and significantly decreased serum ALT levels. At six hrs post-I/R, IL-10 pretreatment increased IL-10 mRNA expression, but suppressed up-regulation of the pro-inflammatory cytokine IL-1β mRNA. However, ALT levels were elevated at six hrs post-I/R in KC-depleted animals. These data reveal that pretreatment with IL-10 protects steatotic livers undergoing I/R, and that phagocytically active KC retain a hepatoprotective role in the steatotic environment.
Collapse
|
10
|
Brescia MDG, Massarollo PCB, Imakuma ES, Mies S. Prospective Randomized Trial Comparing Hepatic Venous Outflow and Renal Function after Conventional versus Piggyback Liver Transplantation. PLoS One 2015; 10:e0129923. [PMID: 26115520 PMCID: PMC4482688 DOI: 10.1371/journal.pone.0129923] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Accepted: 05/11/2015] [Indexed: 12/27/2022] Open
Abstract
Background This randomized prospective clinical trial compared the hepatic venous outflow drainage and renal function after conventional with venovenous bypass (n = 15) or piggyback (n = 17) liver transplantation. Methods Free hepatic vein pressure (FHVP) and central venous pressure (CVP) measurements were performed after graft reperfusion. Postoperative serum creatinine (Cr) was measured daily on the first week and on the 14th, 21st and 28th postoperative days (PO). The prevalence of acute renal failure (ARF) up to the 28th PO was analyzed by RIFLE-AKIN criteria. A Generalized Estimating Equation (GEE) approach was used for comparison of longitudinal measurements of renal function. Results FHVP-CVP gradient > 3 mm Hg was observed in 26.7% (4/15) of the patients in the conventional group and in 17.6% (3/17) in the piggyback group (p = 0.68). Median FHVP-CVP gradient was 2 mm Hg (0–8 mmHg) vs. 3 mm Hg (0–7 mm Hg) in conventional and piggyback groups, respectively (p = 0.73). There is no statistically significant difference between the conventional (1/15) and the piggyback (2/17) groups regarding massive ascites development (p = 1.00). GEE estimated marginal mean for Cr was significantly higher in conventional than in piggyback group (2.14 ± 0.26 vs. 1.47 ± 0.15 mg/dL; p = 0.02). The conventional method presented a higher prevalence of severe ARF during the first 28 PO days (OR = 3.207; 95% CI, 1.010 to 10.179; p = 0.048). Conclusion Patients submitted to liver transplantation using conventional or piggyback methods present similar results regarding venous outflow drainage of the graft. Conventional with venovenous bypass technique significantly increases the harm of postoperative renal dysfunction. Trial Registration ClinicalTrials.gov https://clinicaltrials.gov/ct2/show/NCT01707810
Collapse
Affiliation(s)
- Marília D’Elboux Guimarães Brescia
- Laboratório de Anatomia Médico-Cirúrgica (LIM-02), Departamento de Cirurgia, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
- * E-mail:
| | - Paulo Celso Bosco Massarollo
- Laboratório de Anatomia Médico-Cirúrgica (LIM-02), Departamento de Cirurgia, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Ernesto Sasaki Imakuma
- Laboratório de Anatomia Médico-Cirúrgica (LIM-02), Departamento de Cirurgia, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Sérgio Mies
- Laboratório de Anatomia Médico-Cirúrgica (LIM-02), Departamento de Cirurgia, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| |
Collapse
|
11
|
Elevation of HO-1 Expression Mitigates Intestinal Ischemia-Reperfusion Injury and Restores Tight Junction Function in a Rat Liver Transplantation Model. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2015:986075. [PMID: 26064429 PMCID: PMC4441991 DOI: 10.1155/2015/986075] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2015] [Accepted: 04/26/2015] [Indexed: 12/17/2022]
Abstract
Aims. This study was aimed at investigating whether elevation of heme oxygenase-1 (HO-1) expression could lead to restoring intestinal tight junction (TJ) function in a rat liver transplantation model. Methods. Intestinal mucosa injury was induced by orthotopic autologous liver transplantation (OALT) on male Sprague-Dawley rats. Hemin (a potent HO-1 activator) and zinc-protoporphyrin (ZnPP, a HO-1 competitive inhibitor), were separately administered in selected groups before OALT. The serum and intestinal mucosa samples were collected at 8 hours after the operation for analysis. Results. Hemin pretreatment significantly reduced the inflammation and oxidative stress in the mucosal tissue after OALT by elevating HO-1 protein expression, while ZnPP pretreatment aggravated the OALT mucosa injury. Meanwhile, the restriction on the expression of tight junction proteins zonula occludens-1 and occludin was removed after hemin pretreatment. These molecular events led to significant improvement on intestinal barrier function, which was proved to be through increasing nuclear translocation of nuclear factor-E2-related factor 2 (Nrf2) and reducing nuclear translocation of nuclear factor kappa-B (NF-κB) in intestinal injured mucosa. Summary. Our study demonstrated that elevation of HO-1 expression reduced the OALT-induced intestinal mucosa injury and TJ dysfunction. The HO-1 protective function was likely mediated through its effects of anti-inflammation and antioxidative stress.
Collapse
|
12
|
A facilitated method for hepatic vein blood: sampling during liver transplantation. Transplantation 2015; 99:e25-6. [PMID: 25827323 DOI: 10.1097/tp.0000000000000637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
13
|
van der Heijden KM, van der Heijden IM, Galvao FH, Lopes CG, Costa SF, Abdala E, D’Albuquerque LA, Levin AS. Intestinal translocation of clinical isolates of vancomycin-resistant Enterococcus faecalis and ESBL-producing Escherichia coli in a rat model of bacterial colonization and liver ischemia/reperfusion injury. PLoS One 2014; 9:e108453. [PMID: 25255079 PMCID: PMC4177999 DOI: 10.1371/journal.pone.0108453] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Accepted: 08/29/2014] [Indexed: 12/13/2022] Open
Abstract
The objectives of this study were to develop a rat model of gastrointestinal colonization with vancomycin-resistant Enterococcus faecalis (VRE) and extended-spectrum beta-lactamase (ESBL)-producing E. coli and to evaluate intestinal translocation to blood and tissues after total and partial hepatic ischemia. Methods - We developed a model of rat colonization with VRE and ESBL-E coli. Then we studied four groups of colonized rats: Group I (with hepatic pedicle occlusion causing complete liver ischemia and intestinal stasis); Group II (with partial liver ischemia without intestinal stasis); Group III (surgical manipulation without hepatic ischemia or intestinal stasis); Group IV (anesthetized without surgical manipulation). After sacrifice, portal and systemic blood, large intestine, small intestine, spleen, liver, lungs, and cervical and mesenteric lymph nodes were cultured. Endotoxin concentrations in portal and systemic blood were determined. Results - The best inocula were: VRE: 2.4×10(10) cfu and ESBL-E. coli: 1.12×10(10) cfu. The best results occurred 24 hours after inoculation and antibiotic doses of 750 µg/mL of water for vancomycin and 2.1 mg/mL for ceftriaxone. There was a significantly higher proportion of positive cultures for ESBL-E. coli in the lungs in Groups I, II and III when compared with Group IV (67%; 60%; 75% and 13%, respectively; p:0.04). VRE growth was more frequent in mesenteric lymph nodes for Groups I (67%) and III (38%) than for Groups II (13%) and IV (none) (p:0.002). LPS was significantly higher in systemic blood of Group I (9.761 ± 13.804 EU/mL-p:0.01). No differences for endotoxin occurred in portal blood. Conclusion -We developed a model of rats colonized with resistant bacteria useful to study intestinal translocation. Translocation occurred in surgical procedures with and without hepatic ischemia-reperfusion and probably occurred via the bloodstream. Translocation was probably lymphatic in the ischemia-reperfusion groups. Systemic blood endotoxin levels were higher in the group with complete hepatic ischemia.
Collapse
Affiliation(s)
- Karin M. van der Heijden
- Department of Infectious Diseases, LIM 54, Hospital das Clínicas, University of São Paulo, São Paulo, Brazil
| | - Inneke M. van der Heijden
- Department of Infectious Diseases, LIM 54, Hospital das Clínicas, University of São Paulo, São Paulo, Brazil
| | - Flavio H. Galvao
- Transplantation Division, Department of Gastroenterology, University of São Paulo, São Paulo, Brazil
| | - Camila G. Lopes
- Transplantation Division, Department of Gastroenterology, University of São Paulo, São Paulo, Brazil
| | - Silvia F. Costa
- Department of Infectious Diseases, LIM 54, Hospital das Clínicas, University of São Paulo, São Paulo, Brazil
- Instituto de Medicina Tropical, Universidade de São Paulo, São Paulo, Brazil
| | - Edson Abdala
- Department of Infectious Diseases, LIM 54, Hospital das Clínicas, University of São Paulo, São Paulo, Brazil
- Transplantation Division, Department of Gastroenterology, University of São Paulo, São Paulo, Brazil
| | - Luiz A. D’Albuquerque
- Transplantation Division, Department of Gastroenterology, University of São Paulo, São Paulo, Brazil
| | - Anna S. Levin
- Department of Infectious Diseases, LIM 54, Hospital das Clínicas, University of São Paulo, São Paulo, Brazil
- Instituto de Medicina Tropical, Universidade de São Paulo, São Paulo, Brazil
| |
Collapse
|
14
|
Global consequences of liver ischemia/reperfusion injury. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2014; 2014:906965. [PMID: 24799983 PMCID: PMC3995148 DOI: 10.1155/2014/906965] [Citation(s) in RCA: 190] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Revised: 01/02/2014] [Accepted: 01/13/2014] [Indexed: 12/11/2022]
Abstract
Liver ischemia/reperfusion injury has been extensively studied during the last decades and has been implicated in the pathophysiology of many clinical entities following hepatic surgery and transplantation. Apart from its pivotal role in the pathogenesis of the organ's post reperfusion injury, it has also been proposed as an underlying mechanism responsible for the dysfunction and injury of other organs as well. It seems that liver ischemia and reperfusion represent an event with “global” consequences that influence the function of many remote organs including the lung, kidney, intestine, pancreas, adrenals, and myocardium among others. The molecular and clinical manifestation of these remote organs injury may lead to the multiple organ dysfunction syndrome, frequently encountered in these patients. Remote organ injury seems to be in part the result of the oxidative burst and the inflammatory response following reperfusion. The present paper aims to review the existing literature regarding the proposed mechanisms of remote organ injury after liver ischemia and reperfusion.
Collapse
|
15
|
Alegre ML, Goldstein DR, Chong AS. Toll-like receptor signaling in transplantation. Curr Opin Organ Transplant 2012; 13:358-65. [PMID: 18685330 DOI: 10.1097/mot.0b013e3283061149] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
PURPOSE OF REVIEW This review summarizes recent advances in the role of endogenous and exogenous Toll-like receptor ligands in the activation and inhibition of immune responses in transplantation. RECENT FINDINGS During an alloresponse, Toll-like receptors can be engaged by both damage-induced endogenous ligands or microbial-associated molecular patterns. The damage-induced molecule high mobility group box 1 protein and its binding to Toll-like receptor 4 have been identified as major initiators of antitumor and antitransplant immune responses. Type I interferon signaling plays an important role in the pro-rejection effect mediated by Toll-like receptor agonists and some bacteria. Similar pathways, however, in neonates can result in inhibition rather than activation of alloimmune responses. SUMMARY The consequences of Toll-like receptor engagement by endogenous and exogenous ligands in transplantation may depend on the relative induction of inflammatory and regulatory pathways and the stage of development of the immune system.
Collapse
Affiliation(s)
- Maria-Luisa Alegre
- Department of Medicine, The University of Chicago, Chicago, Illinois, USA.
| | | | | |
Collapse
|
16
|
Batista TP, Miranda LEC, Sabat BD, Melo PSVD, Fonseca Neto OCLD, Amorim AG, Lacerda CM. Non-cancerous prognostic factors of hepatocellular carcinoma after liver transplantation. Acta Cir Bras 2012; 27:396-403. [PMID: 22666757 DOI: 10.1590/s0102-86502012000600007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2012] [Accepted: 04/16/2012] [Indexed: 11/22/2022] Open
Abstract
PURPOSE To explore non-cancerous factors that may be related with medium-term survival (24 months) after liver transplantation (LT) in this data from northeast Brazil. METHODS A cross-sectional study was carried out in patients who underwent deceased-donor orthotopic LT because hepatocellular carcinoma (HCC) at the University of Pernambuco, Brazil. Non-cancerous factors (i.e.: donor-, receptor-, surgery- and center-related variables) were explored as prognostic factors of medium-term survival using univariate and multivariate approachs. RESULTS Sixty-one patients were included for analysis. Their three, six, 12 and 24-month overall cumulative survivals were 88.5%, 80.3%, 73.8% and 65.6%, respectively. Our univariate analysis identified red blood cell transfusion (Exp[b]=1.26; p<0.01) and hepato-venous reconstruction technique (84.6% vs. 51.4%, p<0.01; respectively for piggyback and conventional approaches) as significantly related to post-LT survival. The multivariate analysis confirmed the hepato-venous reconstruction technique was an independent prognostic factor. CONCLUSION The piggyback technique was related to improved medium-term survival of hepatocellular carcinoma patients after liver transplantation in this northeast Brazilian sample.
Collapse
|
17
|
Ellett JD, Atkinson C, Evans ZP, Amani Z, Balish E, Schmidt MG, Schnellmann RG, Chavin KD. Toll-like receptor 4 knockout mice are protected from endothelial overactivation in the absence of Kupffer cells after total hepatic ischemia/reperfusion. Liver Transpl 2011; 17:1089-98. [PMID: 21563297 PMCID: PMC3960597 DOI: 10.1002/lt.22333] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Kupffer cells (KCs) have been shown to be critical mediators of ischemia/reperfusion (I/R) injury in the murine liver. Using liposomal clodronate (LC), we found that KCs were protective in models of total hepatic ischemia with bowel congestion. We investigated the role of toll-like receptor 4 (TLR4) in the damage that occurs after I/R in KC-depleted livers. We injected 8-week-old C57BL/10J mice and C57BL/10ScN [toll-like receptor 4 knockout (TLR4KO)] mice with LC 48 hours before 35 minutes of warm hepatic ischemia with bowel congestion, which was followed by either 6 or 24 hours of reperfusion. The KC-depleted animals had increased mortality as well as a 10-fold increase in their aminotransferase levels that correlated with increases in centrilobular necrosis. These changes were absent in the TLR4KO animals. Lipopolysaccharide was bound extensively to endothelial cells after I/R, and this binding was diminished in the TLR4KO animals. In conjunction with this, there was an up-regulation of endothelial cell adhesion molecules in the LC-treated animals that was absent in the TLR4KO animals. Finally, there was a dramatic increase in the proinflammatory cytokine levels of the LC-treated animals, and the TLR4KO animals were protected against this increase. In conclusion, TLR4 promotes endothelial overactivation after I/R in the absence of KCs.
Collapse
Affiliation(s)
- Justin D Ellett
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC29425
| | - Carl Atkinson
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC29425
| | - Zachary P Evans
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC29425
| | - Zainab Amani
- Department of Surgery, Medical University of South Carolina, Charleston, SC29425
| | - Edward Balish
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC29425
| | - Michael G Schmidt
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC29425
| | - Rick G Schnellmann
- Department of Pharmaceutical and Biomedical Sciences, Medical University of South Carolina, Charleston, SC29425
| | - Kenneth D Chavin
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC29425,Department of Surgery, Medical University of South Carolina, Charleston, SC29425,To whom correspondence should be addressed and location where work was performed: Kenneth D Chavin, MD, PhD, Medical University of South Carolina, 96 Jonathan Lucas St, CSB 409, Charleston, SC 29425, Phone (843) 792-3368, Fax (843) 792-8596,
| |
Collapse
|
18
|
Abstract
BACKGROUND Piggy-back method of transplantation, which involves preservation of the recipient retrohepatic inferior vena cava, has been suggested as an alternative to the conventional method of liver transplantation, where the recipient retrohepatic inferior vena cava is resected. OBJECTIVES To compare the benefits and harms of piggy-back technique versus conventional liver transplantation as well as of the different modifications of piggy-back technique during liver transplantation. SEARCH STRATEGY We searched The Cochrane Hepato-Biliary Group Controlled Trials Register, the Cochrane Central Register of Controlled Trials (CENTRAL) in The Cochrane Library, MEDLINE, EMBASE, and Science Citation Index Expanded until June 2010 for identifying randomised trials using search strategies. SELECTION CRITERIA Only randomised clinical trials, irrespective of language, blinding, or publication status were considered for the review. DATA COLLECTION AND ANALYSIS Two authors (KSG and VP) independently identified trials and independently extracted data. We calculated the mean difference (MD) or standardised mean difference (SMD) with 95% confidence intervals (CI) using both the fixed-effect and the random-effects models with RevMan 5 based on intention-to-treat analysis for continuous outcomes. For binary outcomes, we used the Fisher's exact test since none of the comparisons of binary outcomes included more than one trial. MAIN RESULTS Two trials randomised in total 106 patients to piggy-back method (n = 53) versus conventional method with veno-venous bypass (n = 53). Both trials were at high risk of bias. There was no significant difference in post-operative mortality, primary graft non-function, vascular complications, renal failure, transfusion requirements, intensive therapy unit (ITU) stay, or hospital stay between the two groups. The warm ischaemic time was significantly shorter in the piggy-back method than the conventional method (MD -11.50 minutes; 95% CI -19.35 to -3.65; P < 0.01). The proportion of patients who developed chest complications were significantly higher in the the piggy-back method than the conventional method (75.8% versus 44.1%; P = 0.01).One trial randomised 80 patients to piggy-back with porto-caval bypass (n = 40) versus piggy-back without porto-caval bypass (n = 40). This trial was at high risk of bias. There was no significant difference in post-operative mortality, re-transplantation due to primary graft non-function, vascular complications, renal failure, or hospital stay between the two groups. Fewer patients required blood transfusion in the piggy-back with porto-caval bypass group (55%) than the piggy-back without porto-caval bypass group (75%) (P = 0.02). There was no significant difference in the mean amount of blood transfused between the groups (MD -1.00 unit; 95% CI -2.19 to 0.19; P = 0.10). The ITU stay was significantly shorter in the piggy-back with porto-caval bypass group (2.9 days) than the piggy-back without porto-caval bypass group (4.9 days; MD -2.00 days; 95% CI -3.82 to -0.18; P = 0.03).There were no trials comparing piggy-back method with conventional method without veno-venous bypass or different techniques of piggy-back method. AUTHORS' CONCLUSIONS There is currently no evidence to recommend or refute the use of piggy-back method of liver transplantation.
Collapse
Affiliation(s)
- Kurinchi Selvan Gurusamy
- Department of Surgery, Royal Free Campus, UCL Medical School, 9th Floor, Royal Free Hospital, Pond Street, London, UK, NW3 2QG
| | | | | |
Collapse
|
19
|
Testro AG, Visvanathan K, Skinner N, Markovska V, Crowley P, Angus PW, Gow PJ. Acute allograft rejection in human liver transplant recipients is associated with signaling through toll-like receptor 4. J Gastroenterol Hepatol 2011; 26:155-63. [PMID: 21175809 DOI: 10.1111/j.1440-1746.2010.06324.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND AIMS Toll-like receptor (TLR) signaling is a crucial step in initiating adaptive immune responses. In addition to recognizing endotoxin, TLR4 also recognizes endogenous ligands ('damage-associated structures'), which are released into the circulation in the peri-transplantation period. TLR2 to a lesser extent also recognizes these endogenous ligands. Multiple studies involving solid organ transplants demonstrate a clear association between TLR4 and allograft rejection. In the present study we assessed whether an association exists between TLR4 and TLR2-dependent responses and acute liver allograft rejection. METHODS The sample included 26 liver transplant recipients. Blood was taken pre-transplant and at multiple points over the first 14 days post-transplant. Monocytes were stimulated with TLR4 and TLR2 ligands, lipopolysaccharide and Pam-3-Cys, respectively. Monocyte TLR expression was determined using flow cytometry; enzyme-linked immunosorbent assays measured tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) production. RESULTS Nine (34.6%) patients experienced rejection. No differences existed in age, sex, disease or immunosuppression between rejectors and non-rejectors. Baseline TLR4 expression was significantly higher in rejectors (1.36 vs 1.02, P=0.01). There was no difference in TLR2 expression. In rejectors, baseline TLR4- and TLR2-dependent production of TNF-α and IL-6 was also significantly increased. Post-transplant, the two groups differed with regard to TLR4-dependent TNF-α production, with rejectors demonstrating progressive downregulation over the first week. CONCLUSIONS Prior to liver transplantation, patients who subsequently experience rejection demonstrate robust TLR4-dependent immune responses, which are not seen in those who do not reject. This supports the theory that damage-associated structures signaling through TLR4 may be responsible for the early activation of alloimmune T-cells, favoring allograft rejection.
Collapse
Affiliation(s)
- Adam G Testro
- Department of Medicine, The University of Melbourne, Austin Health, Melbourne, Victoria, Australia.
| | | | | | | | | | | | | |
Collapse
|
20
|
Sakai T, Matsusaki T, Marsh JW, Hilmi IA, Planinsic RM. Comparison of surgical methods in liver transplantation: retrohepatic caval resection with venovenous bypass (VVB) versus piggyback (PB) with VVB versus PB without VVB. Transpl Int 2010; 23:1247-58. [PMID: 20723178 DOI: 10.1111/j.1432-2277.2010.01144.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Use of piggyback technique (PB) and elimination of venovenous bypass (VVB) have been advocated in adult liver transplantation (LT). However, individual contribution of these two modifications on clinical outcomes has not been fully investigated. We performed a retrospective review of 426 LTs within a 3-year period, when three different surgical techniques were employed per the surgeons' preference: retrohepatic caval resection with VVB (RCR+VVB) in 104 patients, PB with VVB (PB+VVB) in 148, and PB without VVB (PB-Only) in 174. The primary outcomes were intraoperative blood transfusion and the patient and graft survivals. Demographic profiles were similar, except younger recipient age in RCR+VVB and fewer number of grafts with cold ischemic time over 16 h in PB-Only. PB-Only required lesser intraoperative red blood cells (P=0.006), fresh frozen plasma (P=0.005), and cell saver return (P=0.007); had less incidence of acute renal failure (P=0.001), better patient survival (P=0.039), and graft survival (P=0.003). The benefits of PB+VVB were only found in shortened total surgical time (P=0.0001) and warm ischemic time (P=0.0001), and less incidence of acute renal failure (P=0.001) than RCR+VVB. PB-Only method seemed to provide the best clinical outcome. The benefit of PB was not fully achieved when it was used with VVB.
Collapse
Affiliation(s)
- Tetsuro Sakai
- Department of Anesthesiology, University of Pittsburgh Medical Center, 200 Lothrop Street, Pittsburgh, PA 15213, USA.
| | | | | | | | | |
Collapse
|
21
|
Upregulation of TLR2/4 expression in mononuclear cells in postoperative systemic inflammatory response syndrome after liver transplantation. Mediators Inflamm 2010; 2010:519589. [PMID: 20634913 PMCID: PMC2904457 DOI: 10.1155/2010/519589] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2009] [Revised: 04/25/2010] [Accepted: 04/26/2010] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND To explore the relationship between Toll-like rpheral blood mononuclear cells (PBMC) and systemic inflammatory response syndrome (SIRS) in postoperative patients of liver transplantation (LT). METHODS Blood samples of 27 patients receiving LT were collected at T1 (after induction of anaesthesia), T2 (25 minutes after the beginning of anhepatic phase), T3 (3 hours after graft reperfusion), and T4 (24 hours after graft reperfusion). The expression of TLR2/4 on PBMC and serum concentration of tumor necrosis factor (TNF)-alpha, interleukin (IL)-1beta, and IL-8 were measured. The patients were divided into SIRS group (n = 12) and non-SIRS group (n = 15) for analysis. RESULTS Blood loss and transfusion were higher in the SIRS group than in the non-SIRS group. Both the preanhepatic and anhepatic phase were significantly longer in the SIRS group. The TLR2/4 expression on PBMC as well as serum TNF-alpha, IL-1beta, and IL-8 were significantly higher at T3 and T4 than that at T1 and T2 in the SIRS patients. The expression of TLR4 on PBMC is positively correlated to serum TNF-alpha, IL-8. Expression of TLR2/4 on PBMC and serum concentrations of TNF-alpha, IL-1beta, did not differ among the 4-time points in non-SIRS patients. CONCLUSIONS Upregulation of TLR2/4 expression on PBMC may contribute to the development of postoperative SIRS during perioperative period of LT.
Collapse
|
22
|
Leber B, Mayrhauser U, Rybczynski M, Stadlbauer V. Innate immune dysfunction in acute and chronic liver disease. Wien Klin Wochenschr 2010; 121:732-44. [PMID: 20047110 DOI: 10.1007/s00508-009-1288-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2009] [Accepted: 11/26/2009] [Indexed: 12/19/2022]
Abstract
Liver cirrhosis is a common disease causing great public-health concern because of the frequent complications requiring hospital care. Acute liver failure is also prone to several complications but is rare. One of the main complications for both acute and chronic liver diseases is infection, which regularly causes decompensation of cirrhosis, possibly leading to organ failure and death. This review focuses on innate immune function in cirrhosis, acute-on-chronic liver failure and acute liver failure. The known defects of Kupffer cells, neutrophils and monocytes are discussed, together with the pathophysiological importance of gut permeability, portal hypertension and intrinsic cellular defects, and the role of endotoxin, albumin, lipoproteins and toll-like receptors. Based on these different pathomechanisms, the available information on therapeutic strategies is presented. Antibiotic and probiotic treatment, nutritional support, artificial liver support, and experimental strategies such as inhibition of toll-like receptors and use of albumin and colony-stimulating factors are highlighted.
Collapse
Affiliation(s)
- Bettina Leber
- Division of Surgery, Medical University of Graz, Graz, Austria
| | | | | | | |
Collapse
|
23
|
Hilmi I, Kellum JA, Planinsic R, Foster D, Abdullah A, Damian D, Gligor S, Klein D, Abu-Elmagd K. Endotoxemia is common following abdominal organ transplantation and is associated with reperfusion and rejection. ACTA ACUST UNITED AC 2009. [DOI: 10.3109/17471060902859113] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
24
|
De Wilde V, Van Rompaey N, Hill M, Lebrun JF, Lemaître P, Lhommé F, Kubjak C, Vokaer B, Oldenhove G, Charbonnier LM, Cuturi MC, Goldman M, Le Moine A. Endotoxin-induced myeloid-derived suppressor cells inhibit alloimmune responses via heme oxygenase-1. Am J Transplant 2009; 9:2034-47. [PMID: 19681826 DOI: 10.1111/j.1600-6143.2009.02757.x] [Citation(s) in RCA: 124] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Inflammation and cancer are associated with impairment of T-cell responses by a heterogeneous population of myeloid-derived suppressor cells (MDSCs) coexpressing CD11b and GR-1 antigens. MDSCs have been recently implicated in costimulation blockade-induced transplantation tolerance in rats, which was under the control of inducible NO synthase (iNOS). Herein, we describe CD11b+GR-1+MDSC-compatible cells appearing after repetitive injections of lipopolysaccharide (LPS) using a unique mechanism of suppression. These cells suppressed T-cell proliferation and Th1 and Th2 cytokine production in both mixed lymphocyte reaction and polyclonal stimulation assays. Transfer of CD11b+ cells from LPS-treated mice in untreated recipients significantly prolonged skin allograft survival. They produced large amounts of IL-10 and expressed heme oxygenase-1 (HO-1), a stress-responsive enzyme endowed with immunoregulatory and cytoprotective properties not previously associated with MDSC activity. HO-1 inhibition by the specific inhibitor, SnPP, completely abolished T-cell suppression and IL-10 production. In contrast, neither iNOS nor arginase 1 inhibition did affect suppression. Importantly, HO-1 inhibition before CD11b+ cell transfer prevented the delay of allograft rejection revealing a new MDSC-associated suppressor mechanism relevant for transplantation.
Collapse
Affiliation(s)
- V De Wilde
- Institute for Medical Immunology, Université Libre de Bruxelles, Gosselies, Belgium
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
25
|
Buchholz BM, Kaczorowski DJ, Sugimoto R, Yang R, Wang Y, Billiar TR, McCurry KR, Bauer AJ, Nakao A. Hydrogen inhalation ameliorates oxidative stress in transplantation induced intestinal graft injury. Am J Transplant 2008; 8:2015-24. [PMID: 18727697 DOI: 10.1111/j.1600-6143.2008.02359.x] [Citation(s) in RCA: 227] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Ischemia/reperfusion (I/R) injury during small intestinal transplantation (SITx) frequently causes complications including dysmotility, inflammation and organ failure. Recent evidence indicates hydrogen inhalation eliminates toxic hydroxyl radicals. Syngeneic, orthotopic SITx was performed in Lewis rats with 3 h of cold ischemic time. Both donor and recipient received perioperative air or 2% hydrogen inhalation. SITx caused a delay in gastrointestinal transit and decreased jejunal circular muscle contractile activity 24 h after surgery. Hydrogen treatment resulted in significantly improved gastrointestinal transit, as well as jejunal smooth muscle contractility in response to bethanechol. The transplant induced upregulation in the inflammatory mediators CCL2, IL-1 beta, IL-6 and TNF-alpha were mitigated by hydrogen. Hydrogen significantly diminished lipid peroxidation compared to elevated tissue malondialdehyde levels in air-treated grafts demonstrating an antioxidant effect. Histopathological mucosal erosion and increased gut permeability indicated a breakdown in posttransplant mucosal barrier function which was significantly attenuated by hydrogen treatment. In recipient lung, hydrogen treatment also resulted in a significant abatement in inflammatory mRNA induction and reduced neutrophil recruitment. Hydrogen inhalation significantly ameliorates intestinal transplant injury and prevents remote organ inflammation via its antioxidant effects. Administration of perioperative hydrogen gas may be a potent and clinically applicable therapeutic strategy for intestinal I/R injury.
Collapse
Affiliation(s)
- B M Buchholz
- Division of Gastroenterology, Department of Medicine, Hepatology and Nutrition, Thomas E Starzi Transplantation Institute, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Abstract
Toll-like receptors (TLRs) belong to a family of pattern-recognition receptors for microbial products and endogenous molecules released by stressed cells. Experimental studies show that TLRs are involved in the process of acute allograft rejection and that their activation can prevent transplantation tolerance. Herein, we review the expression of TLRs and the impact of TLR signaling in different cell types in grafted organs including antigen-presenting cells, T and B lymphocytes, epithelial and endothelial cells. We then discuss the involvement of TLRs in the different phases of the rejection phenomenon and the impact of TLR-mediated events on regulatory circuits which dampen alloimmune responses.
Collapse
|
27
|
Stadlbauer V, Davies NA, Wright GAK, Mookerjee RP, Jalan R. Endotoxemia during liver transplantation. Liver Transpl 2007; 13:1616-7. [PMID: 17969198 DOI: 10.1002/lt.21249] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/06/2022]
|