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https://www.readbyqxmd.com/read/28339927/characterizing-the-early-inflammatory-contribution-of-the-donor-kidney-following-reperfusion
#1
John P Stone, Muna Mohamud, Kavit Amin, William R Critchley, Rebecca J Edge, Marc J Clancy, Alexandra L Ball, James E Fildes
Background.: Donor kidneys contain a large reservoir of passenger leucocytes that contribute to acute rejection via direct alloantigen presentation and pro-inflammatory cytokine secretion. However, the early contribution of these cells following revascularization has not previously been described. We performed a secondary, high-volume preservation flush following cold storage to characterize the inflammatory contribution of the donor kidney upon reperfusion. Methods.: Porcine kidneys were retrieved using a protocol analogous to current UK clinical practice...
February 27, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28339922/therapeutic-plasma-exchange-for-potential-human-leukocyte-antigen-antibody-mediated-rejection-in-liver-transplant-patients
#2
Eric Salazar, David Cohen, Tina Ipe, Christopher Leveque
No abstract text is available yet for this article.
March 1, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28339671/characteristics-of-donor-specific-anti-hla-antibodies-and-outcome-in-renal-transplant-patients-treated-with-a-standardized-induction-regimen
#3
Daniel Zecher, Christian Bach, Christoph Staudner, Carsten A Böger, Tobias Bergler, Bernhard Banas, Bernd M Spriewald
Background.: Pre-transplant donor-specific anti-human leukocyte antigen (HLA) antibodies (DSA) have been associated with antibody-mediated rejection (AMR) and early kidney allograft loss. Uncertainties remain regarding the general applicability of these findings and the optimal induction therapy in DSA-positive patients. Methods.: Pre-transplant sera from 174 patients receiving a crossmatch-negative kidney transplant were retrospectively analysed for DSA using Luminex technology...
February 18, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28339015/protection-of-fk506-against-neuronal-apoptosis-and-axonal-injury-following-experimental-diffuse-axonal-injury
#4
Ting-Qin Huang, Jin-Ning Song, Feng-Wei Zheng, Hong-Gang Pang, Yong-Lin Zhao, Hua Gu, Jun-Jie Zhao
Diffuse axonal injury (DAI) is the most common and significant pathological features of traumatic brain injury (TBI). However, there are still no effective drugs to combat the formation and progression of DAI in affected individuals. FK506, also known as tacrolimus, is an immunosuppressive drug, which is widely used in transplantation medicine for the reduction of allograft rejection. Previous studies have identified that FK506 may play an important role in the nerve protective effect of the central nervous system...
March 22, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28338461/mesenchymal-stem-cells-suppress-chronic-rejection-in-heterotopic-small-intestine-transplant-rat-models-via-inhibition-of-cd68-transforming-growth-factor-%C3%AE-1-and-platelet-derived-growth-factor-expression
#5
Fuxin Li, Jisen Cao, Zhicheng Zhao, Chuan Li, Feng Qi, Tong Liu
OBJECTIVES: Mesenchymal stem cells are easy to obtain and expand, with characteristics of low immunogenicity and strong tissue repair capacity. In this study, our aim was to investigate the role of mesenchymal stem cells in chronic immune rejection of heterotopic small intestine transplant in rats. MATERIALS AND METHODS: After successfully constructing a rat chronic immune rejection model of heterotopic small intestine transplant, we infused mesenchymal stem cells into the animal recipients...
April 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28338457/transplant-renal-vein-thrombosis
#6
Khaled El Zorkany, Julie-Michelle Bridson, Ajay Sharma, Ahmed Halawa
Transplant renal vein thrombosis usually occurs early after surgery with a reported prevalence of 0.1% to 4.2%. It is a devastating event that ultimately leads to graft loss in almost all cases. There are many predisposing factors related to donor, recipient, surgery, and immunosuppression, with mechanical factors being considered the most common causes of transplant renal vein thrombosis. The clinical manifestations of acute renal vein thrombosis are nonspecific and are not dissimilar to the features of urine leak, urinary obstruction, or severe acute rejection...
April 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28337883/evaluation-of-tolerance-and-safety-of-conversion-from-mycophenolate-mofetil-to-enteric-coated-mycophenolic-acid-in-renal-transplant-recipients
#7
L W Qiao, Q S Qu, X Jiang
This study was designed to evaluate the curative effect of conversion from mycophenolate mofetil (MMF) to enteric-coated mycophenolate sodium tablets (EC-MPS) and its safety. One hundred and twenty renal transplant recipients who developed MMF-associated chronic diarrhea were selected as research subjects and treated with EC-MPS. The patients were followed up for 12 months to compare the improvement of gastrointestinal symptoms and the indexes such as carbon dioxide combining power (CO2CP), serum sodium, serum potassium, serum creatinine (Scr) and 24-h urine protein before and after conversion treatment...
January 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28337446/lack-of-clinical-relevance-of-ana-and-asma-positivity-in-patients-with-liver-transplantation-without-a-history-of-autoimmune-diseases
#8
Lucienne Pellegrini, Gianpaolo Parrilli, Antonella Santonicola, Luigi Cinquanta, Cesare Caputo, Carolina Ciacci, Fabiana Zingone
The relevance of isolated autoimmunity elevation in orthotopic liver transplantation (OLT) patients is unknown. Our aim was to analyse how serum autoantibodies change in time and to evaluate their clinical relevance in OLT patients. Patients were invited to provide samples to evaluate ANA, AMA, ASMA, and LKM at the time of enrolment (T0), after 6 months (T6), and after 12 months (T12). We included 114 patients in the study (76% males, median age 62.5 years), finding isolated elevation of at least one serum antibody in up to 80% of them...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28336058/large-9-mm-deep-anterior-lamellar-keratoplasty-with-clearance-of-a-6-mm-optical-zone-optimizes-outcomes-of-keratoconus-surgery
#9
Massimo Busin, Pia Leon, Yoav Nahum, Vincenzo Scorcia
PURPOSE: To evaluate the outcomes of a 9-mm deep anterior lamellar keratoplasty (DALK) with removal of the deep stroma limited to the central 6-mm optical zone. DESIGN: Prospective, noncomparative, interventional case series. PARTICIPANTS: A total of 80 consecutive keratoconic eyes without deep stromal scarring, with at least 1 postoperative examination 1 month after complete suture removal. INTERVENTION: A standardized DALK was performed, including (1) deep trephination of the recipient bed 450 to 550 μm in depth and 9 mm in diameter; (2) pneumatic dissection; (3) debulking of approximately 80% of the anterior stroma; (4) removal of the deep stroma (bubble roof) from a central 6-mm optical zone; and (5) transplantation of a 9-mm anterior corneal lamella cut by microkeratome-assisted dissection (400-μm head) and sutured with a double running 10-0 nylon suture...
March 20, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28333403/association-of-cytotoxic-t-lymphocyte-antigen-4-49a-g-gene-polymorphism-with-acute-rejection-risk-in-renal-transplantation
#10
Chun-Hua Yang, Xue-Xia Chen, Li Chen, Dong-Hua Zheng, Qiong-Shan Liu, Wen-Feng Xie
The conclusions on the association between cytotoxic T-lymphocyte antigen 4 (CTLA4) +49A/G gene polymorphism and acute rejection risk in renal transplantation are still debated. This meta-analysis was performed to update the association between CTLA4 +49A/G and acute rejection risk in renal transplantation. The association investigations were identified from PubMed and Cochrane Library, and eligible studies were included and synthesized using meta-analysis method. Fourteen reports were included into this meta-analysis for the association of CTLA4 A/G gene polymorphism and acute rejection risk in renal transplantation, consisting of 962 acute rejection patients and 2084 non-acute rejection controls...
March 23, 2017: Pediatric Transplantation
https://www.readbyqxmd.com/read/28332959/de-novo-donor-specific-antibody-formation-in-tacrolimus-based-mycophenolate-versus-mammalian-target-of-rapamycin-immunosuppressive-regimens
#11
Zain Mithani, Jane Gralla, Oluwafisayo Adebiyi, Patrick Klem, James E Cooper, Alexander C Wiseman
OBJECTIVES: De novo donor-specific antibody formation posttransplant is associated with decreased graft survival. It is not known whether mammalian target of rapamycin inhibitors may be advantageous or detrimental compared with mycophenolate in the prevention of de novo donor-specific antibody formation. MATERIALS AND METHODS: We compared 66 kidney and kidney-pancreas transplant recipients who received tacrolimus, mammalian target of rapamycin inhibitor, and prednisone (group 1; 36 of whom received everolimus and 30 of whom received sirolimus) versus 132 patients who received tacrolimus, mycophenolate, and prednisone (group 2) matched for age, sex, race, and type/timing of transplant from 2007 to 2012...
March 22, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28332287/pretransplant-numbers-of-cd16-monocytes-as-a-novel-biomarker-to-predict-acute-rejection-after-kidney-transplantation-a-pilot-study
#12
Thierry P P van den Bosch, Luuk B Hilbrands, Rens Kraaijeveld, Nicolle H R Litjens, Farhad Rezaee, Daan Nieboer, Ewout W Steyerberg, Judith A van Gestel, Dave L Roelen, Marian C Clahsen-van Groningen, Carla C Baan, Ajda T Rowshani
Acute rejection is one of the major immunological determinants of kidney graft function and survival. Early biomarkers to predict rejection are lacking. Emerging evidence reveals a crucial role for the monocyte-macrophage lineage cells in the pathogenesis of rejection. We hypothesized that higher pre-transplant numbers of proinflammatory CD16+ monocytes can predict rejection. The study cohort consisted of 104 kidney transplant recipients (58 no-rejections and 46 biopsy-proven rejections), and 33 healthy individuals...
March 23, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28331864/cytopenia-occurrence-in-kidney-transplant-recipients-within-early-post-transplant-period
#13
Atefeh Jafari, Parisa Najivash, Mohammad-Reza Khatami, Simin Dashti-Khavidaki
OBJECTIVE: This study assessed incidence, severity, and time to occurrence of drug-induced leukopenia/thrombocytopenia within 1(st) month after kidney transplantation. METHODS: This cross-sectional study was conducted on newly kidney transplant recipients from two hospitals, Iran. Patients with thrombocytopenia due to acute antibody-mediated rejection were excluded from the study. Demographic, clinical, and laboratory data of patients within the 1(st) month after transplantation were collected...
January 2017: Journal of Research in Pharmacy Practice
https://www.readbyqxmd.com/read/28331448/antibody-mediated-rejection-a-review
#14
Jorge Carlos Garces, Sixto Giusti, Catherine Staffeld-Coit, Humberto Bohorquez, Ari J Cohen, George E Loss
BACKGROUND: Chronic antibody injury is a serious threat to allograft outcomes and is therefore the center of active research. In the continuum of allograft rejection, the development of antibodies plays a critical role. In recent years, an increased recognition of molecular and histologic changes has provided a better understanding of antibody-mediated rejection (AMR), as well as potential therapeutic interventions. However, several pathways are still unknown, which accounts for the lack of efficacy of some of the currently available agents that are used to treat rejection...
2017: Ochsner Journal
https://www.readbyqxmd.com/read/28331443/pacemaker-use-following-heart-transplantation
#15
Hari R Mallidi, Michael Bates
BACKGROUND: The incidence of permanent pacemaker implantation after orthotopic heart transplantation has been reported to be 2%-24%. Transplanted hearts usually exhibit sinus rhythm in the operating room following reperfusion, and most patients do not exhibit significant arrhythmias during the postoperative period. However, among the patients who do exhibit abnormalities, pacemakers may be implanted for early sinus node dysfunction but are rarely used after 6 months. Permanent pacing is often required for atrioventricular block...
2017: Ochsner Journal
https://www.readbyqxmd.com/read/28331134/significance-and-value-of-endomyocardial-biopsy-based-on-our-own-experience
#16
Hatsue Ishibashi-Ueda, Taka-Aki Matsuyama, Keiko Ohta-Ogo, Yoshihiko Ikeda
Endomyocardial biopsy (EMB) has been established in parallel with the development of percutaneous catheter technology for the diagnosis of cardiac diseases. It was developed in the early 1960 s in Japan by Drs. Konno, Sakakibara and Sekiguchi of Tokyo Women's Medical University. EMB is a valuable and useful, but invasive, modality for making a definite diagnosis in diseases such as myocarditis and secondary cardiomyopathies, which are often difficult to diagnose by imaging modality alone. In the field of heart transplantation, the histology of EMB helps monitor rejection to allografts...
March 22, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28330670/layered-fibrotic-plaques-are-the-predominant-component-in-cardiac-allograft-vasculopathy-systematic-findings-and-risk-stratification-by-oct
#17
Tor Skibsted Clemmensen, Niels Ramsing Holm, Hans Eiskjær, Brian Bridal Løgstrup, Evald Høj Christiansen, Jouke Dijkstra, Trine Ørhøj Barkholt, Christian Juhl Terkelsen, Michael Maeng, Steen Hvitfeldt Poulsen
OBJECTIVES: The aims of this study were to characterize cardiac allograft vasculopathy (CAV) phenotypes using optical coherence tomography (OCT) and to evaluate the prognostic significance of OCT-determined CAV severity. BACKGROUND: Intravascular OCT enables in vivo characterization of CAV microstructure after heart transplantation. METHODS: Sixty-two patients undergoing heart transplantation were enrolled at routine angiography from September 2013 through October 2015 and prospectively followed until censoring on May 27, 2016...
March 10, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28329348/outcome-and-treatment-of-nocardiosis-after-solid-organ-transplantation-new-insights-from-a-european-study
#18
David Lebeaux, Romain Freund, Christian van Delden, Hélène Guillot, Sierk D Marbus, Marie Matignon, Eric Van Wijngaerden, Benoit Douvry, Julien De Greef, Fanny Vuotto, Leïla Tricot, Mario Fernández-Ruiz, Jacques Dantal, Cédric Hirzel, Jean-Philippe Jais, Veronica Rodriguez-Nava, Frédérique Jacobs, Olivier Lortholary, Julien Coussement
Background: Solid organ transplant (SOT) recipients are at risk of nocardiosis, a rare opportunistic bacterial infection, but prognosis and outcome of these patients are poorly defined. Our objectives were to identify factors associated with one-year mortality after nocardiosis and describe the outcome of patients receiving short-course antibiotics (≤120 days). Methods: We analyzed data from a multicenter European case-control study that included 117 SOT recipients with nocardiosis diagnosed between 2000 and 2014...
February 4, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28328655/vascularized-composite-allotransplantation-an-emerging-concept-for-burn-reconstruction
#19
Zhi Yang Ng, Alexandre G Lellouch, Tessa Drijkoningen, Irene A Chang, David H Sachs, Curtis L Cetrulo
Vascularized composite allotransplantation (VCA) has demonstrated utility in the reconstruction of extensive soft-tissue defects following severe burns. However, pre-VCA events such as multiple transfusions, previous transplantation and pregnancies, the use of skin allografts, and mechanical support devices may result in sensitization and ultimately exclude a burn patient, who may benefit most through VCA, from a hand or face transplant. The authors sought to identify the immunologic challenges involved. All reported VCA cases up to July 2016 were reviewed...
March 15, 2017: Journal of Burn Care & Research: Official Publication of the American Burn Association
https://www.readbyqxmd.com/read/28326855/impact-of-postoperative-pulmonary-hypertension-on-outcome-after-heart-transplantation
#20
Jakob Lundgren, Carl Söderlund, Göran Rådegran
OBJECTIVES: We wanted to investigate the effects of postoperative pulmonary hypertension (PHpostop: mean pulmonary artery pressure [MPAP] ≥ 25 mmHg), diastolic pressure gradient (DPG), pulmonary vascular resistance (PVR), and repeated hemodynamic measurements on long-term survival after heart transplantation (HT). DESIGN: Eighty-nine patients who underwent HT at Skåne University Hospital in Lund in the period 1988-2010 and who were evaluated with right-heart-catheterization at rest, prior to HT and repeatedly during the first postoperative year, were grouped based on their MPAP, DPG, and PVR...
March 22, 2017: Scandinavian Cardiovascular Journal: SCJ
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