Abstract:
INTRODUCTION:Rejection and hypoxia are the main factors that limit islet engraftment in the recipient liver in the immediate posttransplant period. Recently authors have reported a negative relationship of graft function and islet size, concluding that small islets are superior to large islets. Islets can be dissociated into single cells and reaggregated into so called "pseudoislets," which are functionally equivalent to intact islets but exhibit reduced immunogenicity. The aim of our study was develop a technique that enabled one to obtain pseudoislets of defined, preferably small, dimensions. MATERIALS AND METHODS:Islets were harvested from Lewis rats by the collagenase digestion procedure. After purification, the isolated islets were dissociated into single cells by trypsin digestion. Fractions with different cell numbers were seeded into single drops onto cell culture dishes, which were inverted and incubated for 5 to 8 days under cell culture conditions. Newly formed pseudoislets were analyzed for dimension, morphology, and cellular composition. RESULTS:The volume of reaggregated pseudoislets strongly correlated with the cell number (r(2) = .995). The average diameter of a 250-cell aggregate was 95 +/- 8 microm (mean +/- SD) compared with 122 +/- 46 microm of freshly isolated islets. Islet cell loss may be minimized by performing reaggregation in the presence of medium glucose (11 mmol/L) and the GLP-1 analogue Exendin-4. Morphology, cellular composition, and architecture of reaggregated islets were comparable to intact islets. CONCLUSION:The "hanging drop" culture method allowed us to obtain pseudoislets of standardized size and regular shape, which did not differ from intact islets in terms of cellular composition or architecture. Further investigations are required to minimize cell loss and test in vivo function of transplanted pseudoislets.
journal_name
Transplant Procjournal_title
Transplantation proceedingsauthors
Cavallari G,Zuellig RA,Lehmann R,Weber M,Moritz Wdoi
10.1016/j.transproceed.2007.05.016subject
Has Abstractpub_date
2007-07-01 00:00:00pages
2018-20issue
6eissn
0041-1345issn
1873-2623pii
S0041-1345(07)00595-7journal_volume
39pub_type
杂志文章abstract:BACKGROUND:Despite significant advances in kidney transplantation, long-term graft survival has not dramatically improved leading to strategies to change immunosuppression during the posttransplantation period. Proliferation signal inhibitors (PSI) sirolimus or everolimus possess immunosuppressive and antiproliferative...
journal_title:Transplantation proceedings
pub_type: 杂志文章
doi:10.1016/j.transproceed.2011.01.097
更新日期:2011-04-01 00:00:00
abstract:INTRODUCTION:Adequate perfusion and oxygenation to liver graft after transplantation is essential for its viability. Hepatic oximetry (hepatic tissue oxygenation [LSrO2]) through near infrared spectroscopy (NIRS) can help by showing real time oxygen content of the graft. METHODS:In this prospective study, we enrolled ...
journal_title:Transplantation proceedings
pub_type: 杂志文章
doi:10.1016/j.transproceed.2018.10.023
更新日期:2019-03-01 00:00:00
abstract:UNLABELLED:Our previous investigations on neurodevelopmental outcomes for intestinal transplanted infants revealed that while some children were able to achieve a normal developmental outcomes, most children suffered from significant motor delays and several experienced severe cognitive delays. In our current investiga...
journal_title:Transplantation proceedings
pub_type: 杂志文章
doi:10.1016/j.transproceed.2006.05.037
更新日期:2006-07-01 00:00:00
abstract::Cellular rejection after renal transplantation, in general, occurs as a result of an interaction between immunologic processes that maintain graft tolerance versus allograft rejection. A potential mechanism that triggers such processes might be through the activation of the innate immune response initiated during orga...
journal_title:Transplantation proceedings
pub_type: 杂志文章
doi:10.1016/j.transproceed.2012.08.027
更新日期:2013-05-01 00:00:00
abstract:UNLABELLED:The purpose of this article is to report the use of valgancyclovir as maintenance therapy for cytomegalovirus (CMV) retinitis in a lung transplanted patient. RESULT:A 30-year-old woman with underlying pulmonary lymphangioleiomyomatosis received a lung transplant 1 year ago. CMV retinitis developed 4 months ...
journal_title:Transplantation proceedings
pub_type: 杂志文章
doi:10.1016/j.transproceed.2004.09.034
更新日期:2004-11-01 00:00:00
abstract::Donor hospital transplant coordinators play crucial roles in the donation process. There are only a few coordinators in Poland, while there are about 400 hospitals with intensive care units (ICU). Coordinators must be professionals in medical sciences, clinical psychology, law, organization, management, and statistics...
journal_title:Transplantation proceedings
pub_type: 杂志文章
doi:10.1016/j.transproceed.2009.08.005
更新日期:2009-10-01 00:00:00
abstract:OBJECTIVE:Pancreas transplantation has been associated with the highest surgical complication rate among routinely performed organ transplant procedures. Complications can be caused not only from the pancreas itself but also from the simultaneously transplanted duodenum: gastrointestinal bleeding, duodenal ulcer, pseud...
journal_title:Transplantation proceedings
pub_type: 杂志文章
doi:10.1016/j.transproceed.2011.09.094
更新日期:2011-11-01 00:00:00
abstract::The first kidney transplantation (KT) in Uruguay was performed in 1969. We report the rates of KT and survival of patients and grafts up to December 2014. The country has a surface of 176,215 km(2) and a population of 3,286,314 inhabitants (18.6 inhabitants per km(2)). Till December 31, 2014, 1,940 KT have been perfor...
journal_title:Transplantation proceedings
pub_type: 杂志文章
doi:10.1016/j.transproceed.2015.09.001
更新日期:2015-10-01 00:00:00
abstract:BACKGROUND:Conversion to sirolimus (SRL)-based immunosuppression in renal transplant recipients is an alternative for chronic allograft dysfunction (CAD), cancer and viral infections. We sought to analyze the indications for and safety and efficacy of conversion to SRL among renal transplant patients. METHODS/MATERIAL...
journal_title:Transplantation proceedings
pub_type: 杂志文章
doi:10.1016/j.transproceed.2012.07.010
更新日期:2012-10-01 00:00:00
abstract:BACKGROUND:Blood product transfusion has been successfully used in solid-organ transplantation to induce tolerance. Whether a similar protective effect of blood product transfusion exists in heart transplantation is controversial. OBJECTIVE:To investigate the effect of cellular blood product transfusion within 2 weeks...
journal_title:Transplantation proceedings
pub_type: 杂志文章
doi:10.1016/j.transproceed.2010.05.167
更新日期:2010-09-01 00:00:00
abstract:INTRODUCTION:Cardiovascular disease is the primary cause of death among kidney transplant recipients (KTRs), whereas chronic allograft nephropathy (CAN) is the main reason leading to end-stage chronic kidney disease. The etiologies of both entities include immunologic and nonimmunologic factors. The management of modif...
journal_title:Transplantation proceedings
pub_type: 杂志文章
doi:10.1016/j.transproceed.2012.09.010
更新日期:2012-11-01 00:00:00
abstract:BACKGROUND:Recipients of living donor kidney transplantations from older donors often experience a lower glomerular filtration rate (GFR) than those from young donors. Calcineurin inhibitors (CNI) may cause nephrotoxicity, especially in recipients of older donor organs. The aim of this study was to investigate whether ...
journal_title:Transplantation proceedings
pub_type: 杂志文章
doi:10.1016/j.transproceed.2013.01.099
更新日期:2013-05-01 00:00:00
abstract:BACKGROUND:Graft rejection after intestinal transplantation remains challenging. We aimed to use endoscopy for rejection prediction. MATERIALS AND METHODS:Patients ≥7 years old who underwent intestinal transplantation between November 2016 and September 2019 were prospectively enrolled. Magnifying endoscopy under narr...
journal_title:Transplantation proceedings
pub_type: 杂志文章
doi:10.1016/j.transproceed.2020.10.002
更新日期:2021-01-01 00:00:00
abstract:INTRODUCTION:A shortage of deceased donors has compelled the use of extended-criteria donor organs in liver transplantation. The purpose of this study was to evaluate the impact of using deceased donors older than 80 years. MATERIALS AND METHODS:We retrospectively evaluated 13 patients who received a liver graft from ...
journal_title:Transplantation proceedings
pub_type: 杂志文章
doi:10.1016/j.transproceed.2015.04.049
更新日期:2015-06-01 00:00:00
abstract::Patients with cirrhosis develop metabolic derangements of protein, carbohydrate, and lipid metabolism. Malnutrition is commonplace and is associated with morbidity and mortality. Specific nutrient deficiencies may occur and enteral or parenteral nutritional support may improve outcome in appropriately selected patient...
journal_title:Transplantation proceedings
pub_type: 杂志文章,评审
doi:10.1016/j.transproceed.2006.05.030
更新日期:2006-07-01 00:00:00
abstract::Intravenous immunoglobulin (IVIG) desensitization protocols permit transplantation of sensitized renal recipients against alloantibody incompatibility barriers. It appears that IVIG induces a sustained down-regulation of alloantibody that facilitates crossmatch compatibility. However, the consequence of desensitizatio...
journal_title:Transplantation proceedings
pub_type: 杂志文章
doi:10.1016/j.transproceed.2006.10.155
更新日期:2006-12-01 00:00:00
abstract::A 61-year-old Italian man, who underwent a renal transplantation 8 years ago, receiving azathioprine, prednisone, and cyclosporine for immunosuppressive therapy, presented with a large reddish indurated plaque with a central ulcer, which was slowly enlarged, on the right knee. From the diseased tissue biopsy, a demati...
journal_title:Transplantation proceedings
pub_type: 杂志文章,评审
doi:10.1016/j.transproceed.2006.11.023
更新日期:2007-06-01 00:00:00
abstract:BACKGROUND:Abdominal hernias are a common disease among cirrhotic patients, because of malnutrition and persistently high intra-abdominal pressure due to ascites. When tense ascites is present, life-threatening complications are likely to occur. In such cases, the morbidity and mortality rates are high. OBJECTIVE:We d...
journal_title:Transplantation proceedings
pub_type: 杂志文章
doi:10.1016/j.transproceed.2010.02.090
更新日期:2010-06-01 00:00:00
abstract::Human atrial natriuretic peptide (ANP) is beneficial for the prophylaxis of acute renal failure (ARF) after liver transplantation (OLT). We evaluated renal function in OLT patients with or without ARF, describing cases unresponsive to loop diuretics successfully treated with continuous low-dose ANP infusion without he...
journal_title:Transplantation proceedings
pub_type: 杂志文章
doi:10.1016/j.transproceed.2006.10.130
更新日期:2006-12-01 00:00:00
abstract::Laparoscopic hepatic surgery dramatically changed surgical practice in the last decades, improving outcomes in correctly selected patients. The reduction of postoperative pain, lower rate of complication, early return to work activities, and better esthetic result have been well described in several studies. The succe...
journal_title:Transplantation proceedings
pub_type: 杂志文章
doi:10.1016/j.transproceed.2019.03.003
更新日期:2019-06-01 00:00:00
abstract:INTRODUCTION:Lung tumors have been related to tobacco and alcohol. The incidence increases after orthotopic liver transplantation (OLT) especially when it is performed because of alcoholic cirrhosis. PATIENTS AND METHODS:We analyzed the incidence and risk factors for de novo lung tumors among 701 patients who underwen...
journal_title:Transplantation proceedings
pub_type: 杂志文章
doi:10.1016/j.transproceed.2005.10.041
更新日期:2005-11-01 00:00:00
abstract:BACKGROUND:Impaired exercise capacity and muscle weakness are important characteristics of liver transplantation recipients. Perioperative rehabilitation has been introduced to promote early mobilization of patients and to prevent postoperative pulmonary complications. However, it is unknown how physical status recover...
journal_title:Transplantation proceedings
pub_type: 杂志文章
doi:10.1016/j.transproceed.2016.08.042
更新日期:2016-12-01 00:00:00
abstract:OBJECTIVE:To evaluate the clinical accuracy of several estimated glomerular filtration rates (eGFR) using cystatin-C to measure renal function in Japanese renal donors. METHODS:In total, 61 healthy, potential renal donors were assessed. The average age was 42.7 years (range: 27-67). We evaluated the GFR based on the 2...
journal_title:Transplantation proceedings
pub_type: 杂志文章
doi:10.1016/j.transproceed.2020.06.013
更新日期:2020-12-01 00:00:00
abstract::The studies discussed in this presentation have shown that CD8 T lymphocytes have a primary role in conferring resistance to MCMV in the immunocompetent BALB/c mouse. In the presence of selective CD8 deficiency, however, other mechanisms, apparently mediated by the CD4 T-cell subset, contribute in a compensatory fashi...
journal_title:Transplantation proceedings
pub_type: 杂志文章,评审
doi:
更新日期:1991-06-01 00:00:00
abstract:BACKGROUND:Cytomegalovirus (CMV) infection causes morbidity and mortality in solid-organ transplant recipients. Drug-resistant CMV is an emerging problem with poor survival outcomes and limited therapeutic options. In this study we comprehensively address the issue of drug resistance in CMV when compared with standard ...
journal_title:Transplantation proceedings
pub_type: 杂志文章,评审
doi:10.1016/j.transproceed.2018.02.091
更新日期:2018-12-01 00:00:00
abstract:OBJECTIVE:We compared single-shot epidural analgesia (20 mL 0.125% levobupivacaine and 3 mg diamorphine) followed by regular tramadol versus morphine patient-controlled analgesia (PCA) for postoperative pain following donor nephrectomy. METHODS:We retrospectively evaluated 12 patients who received single-shot epidural...
journal_title:Transplantation proceedings
pub_type: 杂志文章
doi:10.1016/j.transproceed.2011.08.116
更新日期:2011-12-01 00:00:00
abstract:INTRODUCTION:High blood pressure and arterial stiffness contribute independently to cardiovascular mortality in uremic patients. High blood pressure is an established risk factor for chronic allograft nephropathy, recently named interstitial fibrosis/tubular atrophy (IF/TA). We sought to assess whether heart afterload ...
journal_title:Transplantation proceedings
pub_type: 杂志文章
doi:10.1016/j.transproceed.2011.08.014
更新日期:2011-10-01 00:00:00
abstract:BACKGROUND:The purpose of this study was to evaluate the accuracy of spiral computed tomography (CT) and 3-D imaging models in measuring total and segmental liver volume in potential living donors. METHODS:A prospective study was undertaken to assess the correlation between the volumes of potential donor livers determ...
journal_title:Transplantation proceedings
pub_type: 杂志文章
doi:10.1016/j.transproceed.2006.08.106
更新日期:2006-11-01 00:00:00
abstract:INTRODUCTION:Diabetes mellitus may be treated with pancreatic islet cell transplantation. The use of xenogenic islet cells may overcome the shortage of human donor organs. Microencapsulation seems to be a promising method for immunoprotection. Since isolation, purification, encapsulation, and transplantation of islet c...
journal_title:Transplantation proceedings
pub_type: 杂志文章
doi:10.1016/j.transproceed.2006.08.188
更新日期:2006-11-01 00:00:00
abstract:BACKGROUND:ABO-incompatible kidney transplantation (ABOiKT) has been accepted as a viable and cost-effective modality with outcomes comparable to ABO-compatible transplants, but there is a concern regarding higher infectious complications in ABOiKT because of the heightened immunosuppression. The desensitization protoc...
journal_title:Transplantation proceedings
pub_type: 杂志文章
doi:10.1016/j.transproceed.2020.10.008
更新日期:2020-12-02 00:00:00