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acute graft rejection

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https://www.readbyqxmd.com/read/29456214/outcome-of-renal-transplant-recipients-with-cytomegalovirus-and-bk-polyomavirus-co-infection-nephropathy
#1
Anupma Kaul, Shashi Kumar, Dharmendra Bhaduaria, Vinita Agrawal, R K Sharma, Narayan Prasad, Amit Gupta, Rishi Kumar
Reactivation of cytomegalovirus (CMV) and BK polyomavirus (BKV) can result in virus-associated tubulointerstitial nephritis in renal allografts. All those renal biopsies reported as viral cytopathic were isolated and examined by two independent renal histopathologists from our institute and classified as CMV, BKV, and CMV-BKV coinfection-associated viral cytopathic changes with confirmation through polymerase chain reaction technology in either serum or urine or both. All twenty patients were categorized as 10 in CMV, four in BKV, and six were in CMV-BKV coinfection...
January 2018: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/29453486/immune-system-and-kidney-transplantation
#2
Badri Man Shrestha
The immune system recognises a transplanted kidney as foreign body and mounts immune response through cellular and humoral mechanisms leading to acute or chronic rejection, which ultimately results in graft loss. Over the last five decades, there have been significant advances in the understanding of the immune responses to transplanted organs in both experimental and clinical transplant settings. Modulation of the immune response by using immunosuppressive agents has led to successful outcomes after kidney transplantation...
October 2017: JNMA; Journal of the Nepal Medical Association
https://www.readbyqxmd.com/read/29451342/deleterious-effect-of-anti-angiotensin-ii-type-1-receptor-antibodies-detected-pretransplant-on-kidney-graft-outcomes-is-both-proper-and-synergistic-with-donor-specific-anti-hla-antibodies
#3
Jorge Malheiro, Sandra Tafulo, Leonídio Dias, La Salete Martins, Isabel Fonseca, Idalina Beirão, António Castro-Henriques, António Cabrita
AIM: Both donor-specific antibodies (DSA) and anti-angiotensin II type 1 receptor antibodies (AT1R-abs) have been associated with poor graft outcomes after kidney transplantation (KT). We aimed to understand the impact of pretransplant AT1R-abs with or without concomitant DSA on KT outcomes. METHODS: Seventy-six patients transplanted in 2009 were studied. DSA (MFI>1000) and/or AT1R-abs (>10UI) were detected by solid-phase assays in pre-KT sera. Multivariable Cox regression models were used to determine independent predictors of outcomes: acute rejection (AR) and graft failure...
February 16, 2018: Nephrology
https://www.readbyqxmd.com/read/29449524/transplant-center-variability-in-disparities-for-african-american-kidney-transplant-recipients
#4
David J Taber, Mulugeta Gebregziabher, Titte Srinivas, Leonard E Egede, Prabhakar K Baliga
BACKGROUND Disparities research has traditionally focused on patient-level variables to ascertain predominant risk factors driving differences in outcomes for African-American (AA) kidney transplant recipients. Our objectives were to determine the magnitude and impact of transplant center variability for graft outcome disparities. MATERIAL AND METHODS This was a retrospective cohort study analyzing 25 years of U.S. national transplant registry data at both the patient and center levels using univariate descriptive statistics and multivariable modeling...
February 16, 2018: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/29444290/impact-of-renal-allograft-nephrectomy-on-graft-and-patient-survival-following-retransplantation-a-systematic-review-and-meta-analysis
#5
Jinwen Lin, Rending Wang, Ying Xu, Jianghua Chen
Background: It is not clear whether renal allograft removal affects the outcome of renal retransplantation. This study aimed to determine the effect of allograft nephrectomy (AN) and no-AN (No AN) on renal retransplantation. Methods: A systematic review and meta-analysis were conducted using MEDLINE, Embase and the Cochrane Library. Observational studies or randomized controlled trials including renal retransplantation recipients with AN or No-AN were included. The primary outcomes were graft survival, patient survival, acute rejection (AR) and delayed graft dysfunction; the secondary outcomes were positive panel reactive antibody rate and serum creatinine level at 1 year after retransplantation, cold ischemia time and time of hemodialysis before recent transplantation...
February 12, 2018: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29442424/incidence-characterization-and-impact-of-newly-detected-donor-specific-anti-hla-antibody-in-the-first-year-after-pediatric-heart-transplantation-a-report-from-the-ctotc-04-study
#6
A I Dipchand, S Webber, K Mason, B Feingold, C Bentlejewski, W T Mahle, R Shaddy, C Canter, E D Blume, J Lamour, W Zuckerman, H Diop, Y Morrison, B Armstrong, D Ikle, J Odim, A Zeevi
Data on the clinical importance of newly detected donor specific antibodies (ndDSA) following pediatric heart transplantation is lacking despite mounting evidence of the detrimental effect of de novo DSA in solid organ transplantation. We prospectively tested 237 pediatric heart transplant recipients for ndDSA in the first year post-transplant in order to determine their incidence, pattern and clinical impact. One third of patients developed ndDSA; when present, these were mostly detected within the first 6 weeks after transplant suggesting that memory responses may predominate over true de novo DSA production in this population...
February 14, 2018: American Journal of Transplantation
https://www.readbyqxmd.com/read/29434741/inhibition-of-c-x-c-motif-chemokine-10-reduces-graft-loss-mediated-by-memory-cd8-t-cells-in-a-rat-cardiac-re-transplant-model
#7
Jiacheng Xu, Teng Ma, Guorong Deng, Jiawei Zhuang, Cheng Li, Shaohu Wang, Chen Dai, Xiaobiao Zhou, Zhonggui Shan, Zhongquan Qi
The interaction of chemokine (C-X-C motif) ligand 10 (CXCL10) with its receptor (CXCR3) is a critical process in recruiting donor reactive T cells to a graft and alloantigen-specific memory T (Tm) cells exert a principal function in promoting graft dysfunction during accelerated cardiac rejection. However, whether CXCL10 chemokine exerts any effects on acute accelerated rejection mediated by CD8+ Tm cells in a re-transplant model has remained elusive. The present study established a cardiac transplant model by advanced microsurgery technology and improved organ storage...
February 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29428484/pre-transplant-screening-for-non-hla-antibodies-who-should-be-tested
#8
Mary Carmelle Philogene, Sheng Zhou, Bonnie E Lonze, Serena Bagnasco, Sami Alasfar, Robert A Montgomery, Edward Kraus, Annette M Jackson, Mary S Leffell, Andrea A Zachary
Retrospective studies of angiotensin II type 1 receptor antibodies (AT1R-Ab) and anti-endothelial cell antibodies (AECA) have linked these antibodies to allograft injury. Because rising healthcare costs dictate judicious use of laboratory testing, we sought to define characteristics of kidney transplant recipients who may benefit from screening for non-HLA antibodies. Kidney recipients transplanted between 2011 and 2016 at Johns Hopkins, were evaluated for AT1R-Ab and AECA. Pre-transplant antibody levels were compared to clinical and biopsy indications of graft dysfunction...
February 8, 2018: Human Immunology
https://www.readbyqxmd.com/read/29427418/high-mutation-frequency-of-the-piga-gene-in-t-cells-results-in-reconstitution-of-gpi-anchor-cd52-t-cells-that-can-give-early-immune-protection-after-alemtuzumab-based-t-cell-depleted-allogeneic-stem-cell-transplantation
#9
Floris C Loeff, J H Frederik Falkenburg, Lois Hageman, Wesley Huisman, Sabrina A J Veld, H M Esther van Egmond, Marian van de Meent, Peter A von dem Borne, Hendrik Veelken, Constantijn J M Halkes, Inge Jedema
Alemtuzumab (ALM) is used for T cell depletion in the context of allogeneic hematopoietic stem cell transplantation (alloSCT) to prevent acute graft-versus-host disease and graft rejection. Following ALM-based T cell-depleted alloSCT, relatively rapid recovery of circulating T cells has been described, including T cells that lack membrane expression of the GPI-anchored ALM target Ag CD52. We show, in a cohort of 89 human recipients of an ALM-based T cell-depleted alloSCT graft, that early lymphocyte reconstitution always coincided with the presence of large populations of T cells lacking CD52 membrane expression...
February 2, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29423280/biomaterials-enabled-cornea-regeneration-in-patients-at-high-risk-for-rejection-of-donor-tissue-transplantation
#10
M Mirazul Islam, Oleksiy Buznyk, Jagadesh C Reddy, Nataliya Pasyechnikova, Emilio I Alarcon, Sally Hayes, Philip Lewis, Per Fagerholm, Chaoliang He, Stanislav Iakymenko, Wenguang Liu, Keith M Meek, Virender S Sangwan, May Griffith
The severe worldwide shortage of donor organs, and severe pathologies placing patients at high risk for rejecting conventional cornea transplantation, have left many corneal blind patients untreated. Following successful pre-clinical evaluation in mini-pigs, we tested a biomaterials-enabled pro-regeneration strategy to restore corneal integrity in an open-label observational study of six patients. Cell-free corneal implants comprising recombinant human collagen and phosphorylcholine were grafted by anterior lamellar keratoplasty into corneas of unilaterally blind patients diagnosed at high-risk for rejecting donor allografts...
2018: NPJ Regenerative Medicine
https://www.readbyqxmd.com/read/29421812/serum-soluble-interleukin-2-receptor-level-as-a-marker-of-acute-rejection-in-pediatric-kidney-transplant-recipients
#11
Amal M Hagras, Doaa M Salah, Dina H Ahmed, Omnia K Abd Elaal, Hany Ahmed Fouad Elghobary, Fatina I Fadel
BACKGROUND: Despite advances in immunosuppression, acute allograft rejection remains one of the key factors affecting patient and graft survival in pediatric kidney transplantation. The aim of the study is to evaluate the role of serum soluble IL2 receptor (sIL2R) level as a noninvasive assessment parameter of acute rejection (AR). METHOD: Serum sIL2R level was measured (using enzyme-linked immune-sorbent assay technique) in 60 pediatric kidney transplant recipients (30 recipients with AR and 30 transplant recipients with stable graft function)...
February 8, 2018: Nephron
https://www.readbyqxmd.com/read/29407595/post-transplant-hypocomplementemia-a-novel-marker-of-cardiovascular-risk-in-kidney-transplant-recipients
#12
Guillermo Maestro de la Calle, Mario Fernández-Ruiz, Francisco López-Medrano, Natalia Polanco, Esther González, Rafael San Juan, Tamara Ruiz-Merlo, Julia Origüen, Estela Paz-Artal, Amado Andrés, José María Aguado
BACKGROUND AND AIMS: Cardiovascular disease (CVD) is a leading cause of mortality after kidney transplantation (KT). The potential role of the complement system in the pathogenesis of post-transplant CVD remains unexplored. METHODS: Serum complement (C3 and C4) levels were measured at baseline and post-transplant months 1 and 6 in 447 kT recipients. The study outcome was post-transplant atherothrombotic event (PAE), a composite of acute coronary syndrome, critical peripheral arterial disease, stroke and/or transient ischemic attack...
January 22, 2018: Atherosclerosis
https://www.readbyqxmd.com/read/29407334/intravenous-immunoglobulins-in-the-prevention-of-rejection-of-a-second-or-third-kidney-graft
#13
D Glotz, L Rostaing, P Merville, J-P Squifflet, Y Lebranchu
BACKGROUND: Intravenous immunoglobulin (IVIg) reduces acute rejection episodes in kidney transplantation, but adverse events (AEs) are common. The aim of this study was to assess whether human IVIg enhances immunosuppressive effects without increasing AEs in the prevention of acute kidney graft rejection. METHODS: Patients receiving a second or third kidney graft were treated with standard immunosuppressant therapy with (n = 18) or without (n = 10) IVIg. The primary efficacy endpoint was biopsy-proven acute rejection (BPAR) rate at 3 months, and secondary endpoints included acute rejection rate at 12 months, intensity of rejection, and patient survival...
January 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29407333/eculizumab-for-prevention-of-antibody-mediated-rejection-in-blood-group-incompatible-renal-transplantation
#14
P West-Thielke, K Progar, M Campara, N Jasiak, L Gallon, I Tang, M Spaggiari, I Tzvetanov, E Benedetti
Antibody-mediated rejection (AMR) is one of the leading causes of allograft failure especially in patients undergoing ABO-incompatible (ABOi) renal transplantation. We hypothesized that complement inhibition with eculizumab, a C5 inhibitor, would protect against AMR and maintain graft function in ABOi renal transplant recipients. Four patients undergoing living donor kidney transplant from ABOi donors were treated with a 9-week eculizumab course without therapeutic plasma exchange, intravenous immunoglobulin, or splenectomy...
January 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29407332/antibody-drug-treatment-for-steroid-resistant-rejection-after-pediatric-living-donor-liver-transplantation-a-single-center-experience
#15
Y Hirata, Y Sanada, T Urahashi, Y Ihara, N Yamada, N Okada, T Katano, S Otomo, K Ushijima, K Mizuta
BACKGROUND: Antibody drugs have been used to treat steroid-resistant rejection (SRR) after liver transplantation. Although anti-thymocyte globulin has been used for SRR after liver transplantation in place of muromonab-CD3 since 2011 in Japan, the effectiveness of anti-thymocyte globulin after pediatric living-donor liver transplantation (LDLT) has not yet been reported. The aim of this study was to evaluate the effectiveness of antibody drug treatment for SRR after pediatric LDLT in our single center...
January 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29407324/expression-pattern-of-tumor-necrosis-factor-%C3%AE-induced-protein-8-like-2-in-acute-rejection-of-cardiac-allograft
#16
Y Zhao, Y Wang, M S Zhu, W M Han, Z Li, S F Hong, P Yin, G H Zhuang, Z Q Qi
BACKGROUND: Tumor necrosis factor-α-induced protein-8 like-2 (TIPE2) is a negative regulator of innate immunity and cellular immunity, yet the expression pattern of TIPE2 in acute rejection of cardiac allograft remain enigmatic. METHODS: We developed cardiac transplantation models and divided into 3 groups: a naive group, a syngeneic group, and an allogeneic group. Then, we detected the messenger RNA and protein of TIPE2 in cardiac allografts. Real-time polymerase chain reaction showed expression of CD4 and CD8 in the donor heart, and immunofluorescence assay revealed the association between T cells and TIPE2...
January 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29407322/induction-of-regulatory-cd4-cells-and-prolongation-of-fully-major-histocompatibility-complex-mismatched-murine-cardiac-allograft-by-shigyakusan
#17
E Yin, M Uchiyama, M Niimi
Shigyakusan (also known as Tsumura Japan [TJ]-35) is composed of peony, bitter orange, licorice, and Bupleuri radix is used for cholecystitis and gastritis as an anti-inflammatory agent. We investigated the effect of TJ-35 on alloimmune response in a murine heart transplantation model. CBA mice that underwent transplantation of a C57BL/6 (B6) heart were assigned to four groups: no treatment, TJ-35-exposed, each component-exposed, or each component missing-exposed. The four groups above each received oral administration of TJ-35, each component, or TJ-35 with each component missing from the day of transplantation until 7 days, respectively...
January 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29407305/ab-initio-everolimus-based-versus-standard-calcineurin-inhibitor-immunosuppression-regimen-in-liver-transplant-recipients
#18
T M Manzia, R Angelico, L Toti, C Grimaldi, D Sforza, I Vella, L Tariciotti, I Lenci, G Breshanaj, L Baiocchi, G Tisone
AIM: We designed a retrospective case-control study to determine the efficacy and feasibility of everolimus (EVR) combined with low-dose tacrolimus (Tac) ab initio versus standard-dose Tac after liver transplantation (LT). METHODS: Seventy-one adult LT patients, receiving EVR and low-dose Tac without corticosteroids or induction therapy from postoperative day 1 (EVR group) were compared with a well-matched control group of 61 recipients treated with standard-dose Tac in association with antimetabolite...
January 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29407292/impact-of-interleukin-17f-gene-polymorphisms-in-outcome-of-kidney-transplantation-in-tunisian-recipients
#19
Y Haouami, I Sfar, T Dhaouadi, T Gargah, M Bacha, R Bardi, E Abderrahim, R Goucha, M Ounissi, T Ben Abdallah, Y Gorgi
BACKGROUND: Genetic polymorphisms of interleukin (IL)-17F, associated with functional and/or quantitative change in this glycoprotein, have been described as predisposing to various autoimmune diseases. The proinflammatory IL-17 has some roles in renal transplantation. In this context, the relationship between the most common IL-17F polymorphisms with acute renal allograft rejection susceptibility in Tunisian renal recipients has been investigated. METHODS: We examined 93 renal transplant recipients who were enrolled and classified as follows: GI, 48 transplant recipients who developed at least one episode of acute rejection; and GII, 45 controls, kidney recipients who also were followed for at least 1 year and had stable renal function...
January 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29403023/allogenic-peripheral-stem-cell-transplantation-from-hla-matched-related-donors-for-adult-sickle-cell-disease-remarkable-outcomes-from-a-single-center-trial
#20
H Ozdogu, C Boga, M Yeral, I Kozanoglu, C Gereklioglu, P Aytan, M Kasar, S Asma, N Buyukkurt, S Solmaz, A Korur, C Sariturk
Adult patients with sickle cell disease (SCD) are highly susceptible to stem cell transplant complications, including drug toxicity, graft versus host disease (GVHD), and graft rejection due to SCD-related tissue damage, endothelial activation, and inflammation. The scarcity of compatible stem cells for transplantation further limits treatment options, with only 43 cases of adult allogeneic peripheral blood stem cell transplantation (allo-PSCT) from human leukocyte antigen (HLA)-identical sibling donors reported in the international registry for the period 1986-2013...
February 5, 2018: Bone Marrow Transplantation
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