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Acute rejection

X Chen, J L Wei, Y Huang, E L Jiang, Q L Ma, W H Zhai, Y He, R L Zhang, D L Yang, J F Yao, G X Zhang, S Z Feng, M Z Han
Objective: To compare eficacy and safety of porcine antihuman lymphocyte immunoglobulin (pALG) and rabbit antithymocyte immunoglobulin (rATG) as a part of alternative donor allogeneic hematopoietic stem cell transplantation (AD allo-HSCT) for severe aplastic anemia (SAA). Methods: The clinical data of 46 SAA patients received AD allo-HSCT from January 2006 to November 2016 were retrospectively analyzed. The cohort of patients were divided into two groups based on rATG or pALG as a part of conditioning regimen to compare implantation rate, transplantation related complications and outcome...
January 14, 2018: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
Nancy Kim, Roxanna Juarez, Angela D Levy
In patients with end-stage renal disease, the treatment of choice for most patients is renal transplantation. Complications that occur after kidney transplant can be broadly divided into vascular and non-vascular categories. Non-vascular complications can further be divided into surgical and medical categories. When evaluating renal transplant imaging, it is helpful to consider the occurrence of complications in a timeline from time of surgery. Ultrasound is often the first modality used for evaluation of renal transplants particularly in the early postoperative period...
March 17, 2018: Abdominal Radiology
Xiao Zhang, Guigao Lin, Liming Tan, Jinming Li
Tacrolimus is effective for the prevention of acute rejection, but is also highly toxic and has great intra- and inter-individual variability in transplant patients. Genetic variation and other factors influence the response of an individual to tacrolimus treatment. Therefore, even if therapeutic drug monitoring is universally applied, rejection and toxicity still occur. Although the appropriate action on pharmacogenomic variability provides a cornerstone for the precise tacrolimus prescription, at present there are many obstacles to translating it into clinical practice...
March 15, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
Dmitry Balashov, Alexandra Laberko, Anna Shcherbina, Pavel Trakhtman, Dmitrii Abramov, Elena Gutovskaya, Svetlana Kozlovskaya, Larisa Shelikhova, Galina Novichkova, Michael Maschan, Alexander Rumiantsev, Alexei Maschan
Our initial experience of hematopoietic stem cell transplantation (HSCT) from a matched unrelated donor (MUD; n=12) or a haploidentical related donor (n=6) with TCRαβ+/CD19+ graft depletion for Wiskott-Aldrich syndrome (WAS) patients (n=18) showed a dramatic decrease in the incidence of graft-versus-host disease (GVHD) and transplant-related mortality, with an increased rate of overall survival (OS) of 88,9%. Unfortunately, the treatment was associated with mixed myeloid donor chimerism and secondary graft dysfunction (severe thrombocytopenia, n=2; graft rejection, n=5)...
March 14, 2018: Biology of Blood and Marrow Transplantation
Souheil El-Chemaly, Kevin J O'Brien, Steven D Nathan, Gerald L Weinhouse, Hilary J Goldberg, Jean M Connors, Ye Cui, Todd L Astor, Philip C Camp, Ivan O Rosas, Merte Lemma, Vladislav Speransky, Melissa A Merideth, William A Gahl, Bernadette R Gochuico
Pulmonary fibrosis is a progressive, fatal manifestation of Hermansky-Pudlak syndrome (HPS). Some patients with advanced HPS pulmonary fibrosis undergo lung transplantation despite their disease-associated bleeding tendency; others die while awaiting donor organs. The objective of this study is to determine the clinical management and outcomes of a cohort with advanced HPS pulmonary fibrosis who were evaluated for lung transplantation. Six patients with HPS-1 pulmonary fibrosis were evaluated at the National Institutes of Health Clinical Center and one of two regional lung transplant centers...
2018: PloS One
Naoya Ishibashi, Tatsuaki Watanabe, Masahiko Kanehira, Yui Watanabe, Yasushi Hoshikawa, Hirotsugu Notsuda, Masafumi Noda, Akira Sakurada, Shinya Ohkouchi, Takashi Kondo, Yoshinori Okada
PURPOSE: Using a rat model of allograft lung transplantation, we investigated the effectiveness of mesenchymal stromal cells (MSCs) as prophylactic and therapeutic agents against the acute rejection of lung grafts. METHODS: Lung grafts were harvested from donor rats and transplanted orthotopically into major histocompatibility complex-mismatched rats. MSCs were administered to the recipients once (on day 0) or twice (on days 0 and 3) after transplantation. The grade of acute rejection was evaluated both macroscopically and microscopically 6 days after transplantation...
March 15, 2018: Surgery Today
Kazuaki Tokodai, Shigehito Miyagi, Chikashi Nakanishi, Yasuyuki Hara, Wataru Nakanishi, Koji Miyazawa, Kenji Shimizu, Keigo Murakami, Hironobu Sasano, Masafumi Goto, Michiaki Unno, Takashi Kamei
The aim of this study was to evaluate the significance of post-transplant DSA as a predictor of liver fibrosis during long-term follow-up after pediatric LT. We evaluated the histological findings in 18 LT recipients who underwent liver biopsy after DSA screening. Liver fibrosis was scored based on the METAVIR fibrosis staging. Patients were divided into 2 groups based on histological findings, and clinical characteristics among patients with liver fibrosis were assessed. Of 18 patients, 7 were included in the fibrosis group...
March 14, 2018: Pediatric Transplantation
Lambros Kordelas, Fabiola da Silva Nardi, Bettina Wagner, Markus Ditschkowski, Tobias Liebregts, Monika Lindemann, Falko M Heinemann, Peter A Horn, Dietrich W Beelen, Vera Rebmann
HLA-G is a non-classical class I molecule which induces tolerance in allogeneic situations by inhibition of cytotoxic NK and CD8 + T cells and by induction of regulatory T cells. Concordantly, in solid organ transplantation HLA-G is associated with a lower risk for acute and chronic rejection, whereas its role in allogeneic stem cell transplantation (allo-SCT) is less established. We here present detailed analyses of HLA-G-levels in patients after allo-SCT showing a correlation of elevated soluble HLA-G (sHLA-G) levels with less severe acute (p = 0...
March 14, 2018: Bone Marrow Transplantation
Bangari Haldipur, Prudhvi Lal Bhukya, Vidya Arankalle, Kavita Lole
Molecular mechanisms of liver pathology and clinical disease in HEV infection remain unclear. MicroRNAs are known to modulate viral pathogenesis either by directly altering viral gene expression or by enhancing cellular antiviral responses. Given the importance of microRNA-122 (miR-122) in liver pathobiology, we investigated possible role of miR-122 in HEV infection. In silico predictions using genotype 1, 2, 3 and 4 HEV sequences showed that majority of genomes (203/222) harbor at least one miR-122/miR-122* target site...
March 14, 2018: Journal of Virology
Fen Chen, Shulin Li, Dong Sun
Blood oxygen level-dependent magnetic resonance imaging (BOLD MRI) has recently been utilized as a noninvasive tool for evaluating renal oxygenation. Several methods have been proposed for analyzing BOLD images. Regional ROI selection is the earliest and most widely used method for BOLD analysis. In the last 20 years, many investigators have used this method to evaluate cortical and medullary oxygenation in patients with ischemic nephropathy, hypertensive nephropathy, diabetic nephropathy, chronic kidney disease (CKD), acute kidney injury and renal allograft rejection...
March 8, 2018: Kidney & Blood Pressure Research
Nicole A Pilch, Vinayak Rohan, Vinaya Rao, Patrick D Mauldin, Zemin Su, Derek A Dubay, Thomas A Morinelli, David J Taber
BACKGROUND: Several studies have been performed to evaluate surrogate markers of long-term allograft function in renal transplant recipients. These include serum creatinine, estimated glomerular filtration rate (eGFR), slope of eGFR, and more recently eGFR variability. The aim of this study was to measure eGFR slope while assessing the variability of this slope and if high variability occurring at any time post-transplant was predictive of poorer long-term outcomes in a large cohort of kidney transplant recipients...
March 14, 2018: American Journal of Nephrology
Suwasin Udomkarnjananun, Natavudh Townamchai, Pajaree Chariyavilaskul, Kroonpong Iampenkhae, Krit Pongpirul, Boonchoo Sirichindakul, Kamol Panumatrassamee, Jakapat Vanichanan, Yingyos Avihingsanon, Somchai Eiam-Ong, Kearkiat Praditpornsilpa
BACKGROUND: Tacrolimus is mainly metabolized by cytochrome P450 3A5 (CYP3A5), which is expressed in the liver. However, CYP3A5 is also expressed in the kidney tissue and may contribute to local tacrolimus clearance in the kidney allograft. We aimed to evaluate the association between the allograft CYP3A5 genotype and transplant outcomes. METHODS: We conducted a retrospective cohort study at the King Chulalongkorn Memorial Hospital, Thailand, comparing 2 groups of donor and recipient CYP3A5 genotypes, the expressor (*1/*1 and *1/*3) and the non-expressor (*3/*3)...
March 14, 2018: American Journal of Nephrology
Kevin Rey, Sukhbir Manku, Winnie Enns, Thea Van Rossum, Kevin Bushell, Ryan D Morin, Fiona S L Brinkman, Jonathan C Choy
BACKGROUND: The gut microbiota influences many immunological processes but how its disruption affects transplant rejection is poorly understood. METHODS: Interposition grafting of aortic segments was used to examine vascular rejection. The gut microbiota was disrupted in graft recipients using an antibiotic cocktail (ampicillin, vancomycin, metronidazole, neomycin sulfate) in their drinking water. RESULTS: Treatment of mice with antibiotics severely reduced total bacterial content in the intestine and disrupted the bacterial composition...
March 10, 2018: Transplantation
Jan-Michael Abicht, Riccardo Sfriso, Bruno Reichart, Matthias Längin, Katja Gahle, Gisella L Puga Yung, Jörg D Seebach, Robert Rieben, David Ayares, Eckhard Wolf, Nikolai Klymiuk, Andrea Baehr, Alexander Kind, Tanja Mayr, Andreas Bauer
BACKGROUND: In pig-to-human xenotransplantation, early cellular rejection reactions are mediated by natural killer cells (NK cells). Human NK cells are inhibited by HLA-E via CD94/NKG2A receptors. To protect porcine grafts against human NK cell responses, transgenic GTKO pigs expressing hCD46 and HLA-E have been generated. The aim of this study was to test the effect of this genetic modification on xenogeneic, and in particular human NK cell response, using an ex vivo perfusion model of pig hearts with human blood...
March 14, 2018: Xenotransplantation
Marcus Weitz, Guido F Laube, Maria Schmidt, Kai Krupka, Luisa Murer, Dominik Müller, Bernd Hoppe, Anja Büscher, Jens König, Martin Pohl, Therese Jungraithmayr, Florian Thiel, Heiko Billing, Ryszard Grenda, Jacek Rubik, Michael M Kaabak, Fatos Yalcinkaya, Rezan Topaloglu, Nicholas Webb, Luca Dello Strologo, Lars Pape, Silvio Nadalin, Burkhard Tönshoff
BACKGROUND: Infants with a body weight of less than 10 kg are often not considered to be suitable candidates for renal transplantation (RTx). The objective of this study was to evaluate this arbitrary weight threshold for pediatric RTx. METHODS: We conducted a multicenter, retrospective, match-controlled cohort study on infants weighing less than 10 kg at time of engrafting (low-weight group [LWG], n = 38) compared to a matched control group (n = 76) with a body weight of 10-15 kg, using data from the first 2 years post-transplant derived from the CERTAIN Registry...
March 13, 2018: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
Daniel Skuk, Jacques P Tremblay
Background: Transplantation of myogenic cells has potential applications in the treatment of muscle pathologies. Excluding purely autologous cell transplantation, graft viability depends on an adequate control of acute rejection (AR). To contribute in understanding AR in this context, we analyzed whether de novo circulating antibodies against donor's cells are detected during induced AR of graft-derived myofibers in nonhuman primates. Methods: We allotransplanted satellite cell-derived myoblasts in macaques immunosuppressed with tacrolimus...
December 2017: Transplantation Direct
Sandesh Parajuli, Didier A Mandelbrot, Brenda Muth, Maha Mohamed, Neetika Garg, Fahad Aziz, Robert R Redfield, Weixiong Zhong, Brad C Astor, Arjang Djamali
Background: There is limited information on treatment strategies and monitoring strategies for late antibody-mediated rejection (ABMR) after kidney transplantation. Methods: In this observational and nonrandomized study, we compared 78 patients diagnosed with late ABMR (>3 months after transplant) who were treated with standard of care steroids/IVIG (n = 38) ± rituximab (n = 40) at our center between March 1, 2013 and December 31, 2016. All patients had follow-up biopsy and donor-specific antibodies (DSA) monitoring within 3 to 12 weeks...
December 2017: Transplantation Direct
Cheryl Lynn Wolverton, Sue Lasiter, Joanne R Duffy, Michael T Weaver, Anna M McDaniel
Objectives: The overall purpose of this study was to evaluate the validity and reliability of the Caring Assessment Tool-Administration survey. Three specific aims were to (1) evaluate construct validity of the Caring Assessment Tool-Administration survey by testing the hypothesized eight-factor structure of staff nurses' perceptions of nurse manager caring behaviors, (2) estimate the internal consistency, and (3) conduct item reduction analysis. Methods: A 94-item Caring Assessment Tool-Administration designed to assess nurse manager caring behaviors appeared in the literature but lacked robust psychometric testing...
2018: SAGE Open Medicine
Shunta Hori, Mitsuru Tomizawa, Fumisato Maesaka, Takuya Owari, Yosuke Morizawa, Yasushi Nakai, Makito Miyake, Tatsuo Yoneda, Nobumichi Tanaka, Katsunori Yoshida, Kiyohide Fujimoto
BACKGROUND: Page kidney phenomenon is caused by strong renal parenchymal compression and leads to renal hypoperfusion and microvascular ischemia, resulting in renal dysfunction and hypertension. Although the development of Page kidney phenomenon in allograft is rare, most of its cases are induced by allograft biopsy or trauma. We observed a case of Page kidney phenomenon that was induced by unusual causes immediately after kidney transplantation. CASE PRESENTATION: A 66-year-old man, whose wife donated a kidney, underwent ABO-compatible living kidney transplantation...
March 13, 2018: BMC Nephrology
Khawar Abbas, Muhammed Mubarak, Mirza Naqi Zafar, Wajiha Musharraf, Mehjabeen Imam, Tahir Aziz, Adibul Hassan Rizvi
OBJECTIVES: Plasma cell-rich acute rejection is an aggressive form of acute rejection that occurs late after transplant and is usually resistant to standard antirejection therapy. This study reports the safety, efficacy, and outcomes of plasma cell-rich acute rejection after treatment with bortezomib, a proteasome inhibitor, in 10 patients after a first living-related renal transplant. MATERIALS AND METHODS: Plasma cell-rich acute rejection was diagnosed using the 2007 Banff classification...
March 9, 2018: Experimental and Clinical Transplantation
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