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rejection transplantation

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https://www.readbyqxmd.com/read/29792274/ex-vivo-expanded-natural-regulatory-t-cells-from-patients-with-end-stage-renal-disease-or-kidney-transplantation-are-useful-for-autologous-cell-therapy
#1
Sybille Landwehr-Kenzel, Anne Zobel, Henrike Hoffmann, Niels Landwehr, Michael Schmueck-Henneresse, Thomas Schachtner, Andy Roemhild, Petra Reinke
Novel concepts employing autologous, ex vivo expanded natural regulatory T cells (nTreg) for adoptive transfer has potential to prevent organ rejection after kidney transplantation. However, the impact of dialysis and maintenance immunosuppression on the nTreg phenotype and peripheral survival is not well understood, but essential when assessing patient eligibility. The current study investigates regulatory T-cells in dialysis and kidney transplanted patients and the feasibility of generating a clinically useful nTreg product from these patients...
June 2018: Kidney International
https://www.readbyqxmd.com/read/29791589/non-invasive-messenger-rna-transcriptional-evaluation-in-human-kidney-allograft-dysfunction
#2
G Joelsons, T Domenico, L F Gonçalves, R C Manfro
The aim of the present study was to evaluate messenger RNA expression in kidney allograft recipients. Forty-four kidney transplant recipients were evaluated up to three months after grafting. After transplantation, peripheral blood samples were drawn sequentially for real-time polymerase chain reaction analyses of perforin and TIM-3 genes. Biopsies were obtained to evaluate acute graft dysfunction and interpreted according to the Banff classification. Eight patients presented episodes of acute rejection. Recipients with rejection had significantly higher levels of TIM-3 mRNA transcripts compared to those without rejection (median gene expression 191...
2018: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/29791046/impact-of-intensive-dosing-of-mycophenolate-on-pancreas-allograft-survival
#3
Jillian L Descourouez, Margaret Jorgenson, Nathan Menninga, Glen Leverson, Jon Odorico, Robert Redfield
PURPOSE: Evaluate the effect of mycophenolate (mycophenolic acid, MPA) dose on pancreas allograft survival following simultaneous pancreas kidney (SPK) transplant. METHODS: This was an observational study of adult SPK recipients transplanted between 1/1/2002-6/30/2015. Recipients were divided into cohorts based on MPA dose at discharge; high dose (HD) 1000mg three times daily mycophenolate mofetil (MMF) and standard dose (SD) 1000mg twice daily MMF. Primary outcome was pancreas allograft survival...
May 23, 2018: Clinical Transplantation
https://www.readbyqxmd.com/read/29790458/relation-of-preoperative-and-postoperative-echocardiographic-parameters-with-rejection-and-mortality-in-liver-transplant-patients
#4
Kerem Can Yilmaz, Orcun Ciftci, Arzu Neslihan Akgun, Haldun Muderrisoglu, Sedat Boyacioglu, Asuman Nihan Haberal, Gokhan Moray, Mehmet Haberal
OBJECTIVES: Survival in liver transplant after end-stage liver disease is associated with major cardiac functions. In a significant number of patients with end-stage liver disease, cardiac dysfunctions may be observed, which can include high-output heart failure, cardiac valve disease, and pulmonary venous and arterial hypertension. All of these affect perioperative survival. The aim of our study was to determine whether preoperative and postoperative echocardiographic parameters, specifically right heart-related tricuspid regurgitation, estimated systolic pulmonary arterial pressure, and tricuspid annular plane systolic excursion, are associated with rejection and mortality in liver transplant patients...
May 23, 2018: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/29789580/the-effects-of-anti-lap-monoclonal-antibody-down-regulation-of-cd4-lap-t-cells-on-allogeneic-corneal-transplantation-in-mice
#5
Shang Li, Hongshuang Lu, Ruti Sella, Wei Zhang, Hongwei Dong, Chungang Guo, Natalie A Afshari, Zhiqiang Pan, Ying Jie
CD4+latency-associated peptide (LAP)+ T cells are a newly discovered T cell subset with suppressive function on immune responses. In this study, we investigate the role of CD4+LAP+ T cells on mice corneal allograft survival by down-regulating their expression using anti-LAP mAb. We show that a blockage of LAP leads to a decrease in the percentage of T cells expressing CD4+Foxp3+, CD4+GARP+, CD4+LAP+ and CD4+IL-10+ in the lymph nodes and spleens of mice undergoing orthotopic penetrating transplantation of corneal allograft, without affecting corneal graft survival...
May 22, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29789350/regulatory-t-cells-and-kidney-transplantation
#6
REVIEW
Paloma Leticia Martin-Moreno, Sudipta Tripathi, Anil Chandraker
The ability of the immune system to differentiate self from nonself is critical in determining the immune response to antigens expressed on transplanted tissue. Even with conventional immunosuppression, acceptance of the allograft is an active process often determined by the presence of regulatory T cells (Tregs). Tregs classically are CD4+ cells that constitutively express high levels of the IL-2 receptor α chain CD25, along with the transcription factor Foxp3. The use of Tregs in the field of solid organ transplantation is related specifically to the objective of achieving tolerance, with the goal of reducing or eliminating immunosuppressive drugs as well as maintaining tissue repair and managing acute rejection...
May 22, 2018: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/29786042/early-immunosuppressive-exposure-of-enteric-coated-mycophenolate-sodium-plus-tacrolimus-associated-with-acute-rejection-in-expanded-criteria-donor-kidney-transplantation
#7
Chen-Guang Ding, Li-Zi Jiao, Feng Han, He-Li Xiang, Pu-Xun Tian, Xiao-Ming Ding, Xiao-Ming Pan, Xiao-Hui Tian, Yang Li, Jin Zheng, Wu-Jun Xue
Background: Immunosuppressive agents are still inefficient in preventing biopsy-proven acute rejection (BPAR) after expanded criteria donor (ECD) kidney transplantation. The aim of this study was to investigate the relationships between early immunosuppressive exposure and the development of BPAR. Methods: We performed a retrospective study of 58 recipients of ECD kidney transplantation treated with enteric-coated-mycophenolate sodium, tacrolimus (Tac), and prednisone...
June 5, 2018: Chinese Medical Journal
https://www.readbyqxmd.com/read/29785692/impact-of-enteral-nutrition-with-an-immunomodulating-diet-enriched-with-hydrolyzed-whey-peptide-on-infection-after-liver-transplantation
#8
Naoko Kamo, Toshimi Kaido, Yuhei Hamaguchi, Ryuji Uozumi, Shinya Okumura, Atsushi Kobayashi, Hisaya Shirai, Shintaro Yagi, Hideaki Okajima, Shinji Uemoto
BACKGROUND: Infection is a leading cause of death after liver transplantation (LT). Therefore, prevention of infection is crucial for improving outcomes after LT. We examined the impact of early enteral nutrition with an immunomodulating diet (IMD) enriched with hydrolyzed whey peptide (HWP) formulation on infection after living donor LT (LDLT), focusing on sarcopenia. METHODS: This study enrolled 279 consecutive patients who underwent primary LDLT at our institute between January 2008 and April 2015...
May 21, 2018: World Journal of Surgery
https://www.readbyqxmd.com/read/29785006/the-era-of-immunogenomics-immunopharmacogenomics
#9
REVIEW
Makda Zewde, Kazuma Kiyotani, Jae-Hyun Park, Hua Fang, Kai Lee Yap, Poh Yin Yew, Houda Alachkar, Taigo Kato, Tu H Mai, Yuji Ikeda, Tatsuo Matsuda, Xiao Liu, Lili Ren, Boya Deng, Makiko Harada, Yusuke Nakamura
Although germline alterations and somatic mutations in disease cells have been extensively analyzed, molecular changes in immune cells associated with disease conditions have not been characterized in depth. It is clear that our immune system has a critical role in various biological and pathological conditions, such as infectious diseases, autoimmune diseases, drug-induced skin and liver toxicity, food allergy, and rejection of transplanted organs. The recent development of cancer immunotherapies, particularly drugs modulating the immune checkpoint molecules, has clearly demonstrated the importance of host immune cells in cancer treatments...
May 21, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29783997/graft-protective-effect-and-induction-of-cd4-foxp3-cell-by-thrombomodulin-on-allograft-arteriosclerosis-in-mice
#10
Enzhi Yin, Shigefumi Matsuyama, Masateru Uchiyama, Kento Kawai, Masanori Niimi
BACKGROUND: Thrombomodulin (TM) is a promising therapeutic natural anti-coagulant, which exerts the effects to control disseminated intravascular coagulation. However, little is known whether TM on micro-vessels could play an important role in the regulation of intimal hyperplasia. We investigated the vessel-protective effect of TM in the survival of fully major histocompatibility complex (MHC)-mismatched murine cardiac allograft transplantation. METHODS: CBA recipients transplanted with a C57BL/6 heart received intraperitoneal administration of normal saline or 0...
May 21, 2018: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/29782661/comparable-outcomes-in-intestinal-retransplantation-single-center-cohort-study
#11
Burcin Ekser, Chandrashekhar A Kubal, Jonathan A Fridell, Richard S Mangus
BACKGROUND: Graft loss in intestinal transplantation (ITx) is close to 25% in the first year and 50% at 5-year post-transplantation. Although technically and immunologically challenging, intestinal retransplantation is now the 4th most common indication for ITx. METHODS: The aim of this study is to review and compare the outcomes of intestinal retransplantation with primary ITx, which included isolated ITx, modified multivisceral transplantation (mMVTx), and full MVTx, between 2003-2014 at Indiana University...
May 21, 2018: Clinical Transplantation
https://www.readbyqxmd.com/read/29781954/range-and-consistency-of-outcomes-reported-in-randomized-trials-conducted-in-kidney-transplant-recipients-a-systematic-review
#12
Bénédicte Sautenet, Allison Tong, Jeremy R Chapman, Anthony N Warrens, David Rosenbloom, Germaine Wong, John Gill, Klemens Budde, Lionel Rostaing, Lorna Marson, Michelle A Josephson, Peter P Reese, Timothy L Pruett, Nicole Evangelidis, Jonathan C Craig
BACKGROUND: The potential for clinical trials to impact patient care may be limited if the outcomes reported vary by trial and lack direct relevance to patients. Despite the many trials conducted in kidney transplantation, premature death due to cardiovascular disease, infection and malignancy remains high. We aimed to assess the range and consistency of outcomes reported in trials in kidney transplantation. METHODS: We searched for randomized trials conducted in kidney transplantation...
May 16, 2018: Transplantation
https://www.readbyqxmd.com/read/29781812/pim-2-protein-kinase-negatively-regulates-t-cell-responses-in-transplantation-and-tumor-immunity
#13
Anusara Daenthanasanmak, Yongxia Wu, Supinya Iamsawat, Hung D Nguyen, David Bastian, MengMeng Zhang, M Hanief Sofi, Shilpak Chatterjee, Elizabeth G Hill, Shikhar Mehrotra, Andrew S Kraft, Xue-Zhong Yu
PIM kinase family members play a crucial role in promoting cell survival and proliferation via phosphorylation of their target substrates. In this study, we investigated the role of the PIM kinases with respect to T cell responses in transplantation and tumor immunity. We found that the PIM-2 isoform negatively regulated T cell responses to alloantigen, in contrast to the PIM-1 and PIM-3 isoforms, which acted as positive regulators. T cells deficient in PIM-2 demonstrated increased T cell differentiation toward Th1 subset, proliferation, and migration to target organs after allogeneic bone marrow transplantation, resulting in dramatically accelerated graft-versus-host disease (GVHD) severity...
May 21, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29779238/the-role-of-transbronchial-cryobiopsy-in-lung-transplantation
#14
M Angeles Montero, Javier de Gracia, Mario Culebras, Jacqueline Mugnier, Antonio Álvarez, Cristina Berastegui, Cristian Ortiz-Villalón
INTRODUCTION: Lung transplant monitoring is usually assessed by forceps transbronchial biopsies. These types of biopsies show limited reliability and high degree of variability due to insufficient material and compression artefact, which lead to misinterpretation and eventually mistreatment of the transplanted patients. The following study was undertaken to assess the diagnostic yield, histological quality and safety of cryobiopsy in comparison with conventional forceps biopsy for sampling lung tissue in transplant recipients...
May 19, 2018: Histopathology
https://www.readbyqxmd.com/read/29779167/mir-199b-5p-regulates-immune-mediated-allograft-rejection-after-lung-transplantation-through-the-gsk3%C3%AE-and-nf-%C3%AE%C2%BAb-pathways
#15
Linhai Zhu, Haichao Xu, Wang Lv, Zhehao He, Peng Ye, Yiqing Wang, Jian Hu
Emerging evidence indicates that acute rejection mainly associated with the inflammatory response is an independent risk factor for chronic rejection after lung transplantation. Monocytes are the main pro-inflammatory leukocytes infiltrating around the lesions and play vital roles in triggering the acute rejection. In the rat lung transplantation model, lipopolysaccharide (LPS)-induced severe acute rejection was strongly associated with advanced chronic rejection. The exact regulatory mechanism of pro-inflammation in monocytes is not yet clear...
May 19, 2018: Inflammation
https://www.readbyqxmd.com/read/29777547/tacrolimus-induced-asymptomatic-thrombotic-microangiopathy-diagnosed-by-laboratory-tests-in-pig-to-rhesus-corneal-xenotransplantation-a-case-report
#16
Jong-Min Kim, Jaeyoung Kim, Se-Hyun Choi, Jun-Seop Shin, Byoung-Hoon Min, Won Young Jeong, Ga-Eul Lee, Min-Sun Kim, Seeun Kwon, Mee Kum Kim, Chung-Gyu Park
Tacrolimus-associated thrombotic microangiopathy (TA-TMA) is a rare complication. TA-TMA is characterized by microangiopathic hemolytic anemia, thrombocytopenia, and organ damage due to thrombus. We report asymptomatic TA-TMA diagnosed by laboratory tests in pig-to-rhesus corneal xenotransplantation. Corneal transplantation had been conducted from a wild-type SNU miniature pig to a rhesus macaque. The veterinary records were retrospectively reviewed in this case. The immunosuppressive regimen consisted of rituximab, basiliximab, and IVIg as inductive therapies, and steroids with tacrolimus (0...
May 18, 2018: Xenotransplantation
https://www.readbyqxmd.com/read/29777542/perforating-folliculitis-in-association-with-liver-impairment-in-a-patient-with-chronic-ductopenic-rejection-of-liver-transplant
#17
L Steele, M C Wilmot, R Mokbel, J Carton, S Wakelin
No abstract text is available yet for this article.
May 19, 2018: Clinical and Experimental Dermatology
https://www.readbyqxmd.com/read/29776597/the-role-of-fdg-pet-in-detecting-rejection-after-liver-transplantation
#18
Ashley M Watson, Neal Bhutiani, Prejesh Philips, Eric G Davis, Mary Eng, Robert M Cannon, Christopher M Jones
BACKGROUND: The activation and increased metabolic activity of T cells in acute cellular rejection could allow fluoro-2-deoxyglucose positron emission tomography to be utilized for detection of acute cellular rejection. The objective of this study was to evaluate the effectiveness of fluoro-2-deoxyglucose positron emission tomography in detecting acute cellular rejection in the clinical setting. METHODS: Fluoro-2-deoxyglucose positron emission tomography studies were performed on 88 orthotopic liver transplant patients at 7 and 17 days postoperatively (first positron emission tomography and second positron emission tomography, respectively)...
May 15, 2018: Surgery
https://www.readbyqxmd.com/read/29775554/outcomes-and-predictors-of-early-infection-after-heart-transplantation
#19
Kendall C Shultes, Jerrica E Shuster, Scott Micek, Justin M Vader, Keki Balsara, Akinobu Itoh, Bethany R Tellor
BACKGROUND: Limited data exist on the incidence and outcome of early infection after orthotopic heart transplantation (OHT). The purpose of this study was to describe characteristics and outcomes of OHT recipients with an early infection and to identify predictors of such infections. METHODS: This retrospective, single-center study included patients greater than 18 years of age who underwent OHT from February 2009 to May 2014 and had an infection within 30 days of transplantation...
May 18, 2018: Surgical Infections
https://www.readbyqxmd.com/read/29774602/pancreas-transplantation-using-compatible-but-non-identical-abo-blood-group-donors
#20
Santosh Nagaraju, Richard S Mangus, John A Powelson, Jonathan A Fridell
METHODS: A review of all pancreas transplants from a single institution from 01/2003 to 07/2016 (n=606) revealed 41 recipients of a NIC donor pancreas which were matched for age, race, gender, year and type of transplant with 41 ABO identical cases. Groups were compared for allograft survival, incidence of acute cellular rejection (ACR), length of hospital stay, 3-month readmissions and transfusion requirements. Serum haptoglobin and Lactate dehydrogenase were used to identify hemolysis in patients requiring repeated transfusions without overt blood loss...
May 17, 2018: Clinical Transplantation
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