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Renal graft biopsy

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https://www.readbyqxmd.com/read/28029430/reduced-human-transitional-b-cell-t1-t2-ratio-is%C3%A2-associated-with-subsequent-deterioration-in%C3%A2-renal-allograft-function
#1
Aravind Cherukuri, Alan D Salama, Clive R Carter, Douglas Landsittel, Gururaj Arumugakani, Brendan Clark, David M Rothstein, Richard J Baker
Human transitional B cells express relatively high IL-10 and low TNF-α levels, which correlate with B regulatory activity in vitro. Herein, we aim to further define B regulatory phenotype and determine whether B regulatory activity can serve as a prognostic marker for renal allograft dysfunction (graft loss or 2-fold fall in estimated glomerular filtration rate). Transitional B cells can be divided into T1 and T2 subsets based on surface phenotype. T1 cells express a significantly higher ratio of IL-10 to TNF-α than T2 cells or other B subsets...
October 28, 2016: Kidney International
https://www.readbyqxmd.com/read/28024102/elevated-ischaemia-associated-lysyl-oxidase-activity-in-delayed-graft-failure-6-12%C3%A2-months-after-renal-transplantation
#2
Zhi Chen, Yiyang Li, Hongmei Xu, Fuzhe Ma, Jia Li, Lei Zhao, Ying Xu
What is the central question of this study? What potential biochemical changes are associated with renal parenchyma 6-12 months after renal transplantation and delayed graft failure? What is the main finding and its importance? Tissue fibrosis, mediated by tissue ischaemia-induced induction of hypoxia-inducible factor-1α and fibronectin and consequent activation of lysyl oxidase, is a major underlying pathophysiological mechanism that contributes to delayed graft failure several months after renal transplantation...
November 7, 2016: Experimental Physiology
https://www.readbyqxmd.com/read/28009783/treatment-of-acute-antibody-mediated-renal-allograft-rejection-with-cyclophosphamide
#3
Johannes Waiser, Michael Duerr, Klemens Budde, Birgit Rudolph, Kaiyin Wu, Friederike Bachmann, Fabian Halleck, Constanze Schönemann, Nils Lachmann
BACKGROUND: Antibody-mediated rejection (ABMR) is a major risk for renal allograft survival. Throughout decades, cyclophosphamide treatment has been proven to be effective in patients with antibody-associated autoimmune diseases. We investigated, whether cyclophosphamide combined with plasmapheresis (PPH) and intravenous immunoglobulins (IVIG) is an option for patients with ABMR. METHODS: Between March 2013 and November 2015, we initiated treatment of 13 consecutive patients with biopsy-proven acute ABMR with i...
December 22, 2016: Transplantation
https://www.readbyqxmd.com/read/28005695/foretelling-graft-outcome-by-molecular-evaluation-of-renal-allograft-biopsies-the-gocar-study
#4
Saleh Yazdani, Maarten Naesens
No abstract text is available yet for this article.
January 2017: Transplantation
https://www.readbyqxmd.com/read/27998642/bone-histomorphometry-in-de-novo-renal-transplant-recipients-indicates-a-further-decline-in%C3%A2-bone-resorption-1-year-posttransplantation
#5
Pieter Evenepoel, Geert J Behets, Liesbeth Viaene, Patrick C D'Haese
Renal transplantation is believed to have a major impact on bone health. The present prospective observational bone biopsy study aimed to define the natural history of bone histomorphometry parameters in contemporaneous de novo renal transplant recipients. Paired bone biopsies were performed at the time of transplantation and at one-year posttransplantation in an unselected cohort of 36 patients referred for deceased kidney replacement. Parameters of mineral metabolism and circulating bone turnover markers were monitored as well...
December 17, 2016: Kidney International
https://www.readbyqxmd.com/read/27977332/clinical-impact-of-the-cyp3a5-6986a-g-allelic-variant-on-kidney-transplantation-outcomes
#6
Adrien Flahault, Dany Anglicheau, Marie-Anne Loriot, Eric Thervet, Nicolas Pallet
AIM: Meta-analyses and large cohort studies provide confusing results on the association of the CYP3A5 6986A>G allelic variant and adverse outcomes in kidney transplant recipients under tacrolimus-based immunosuppressive regimen. A residual effect of CYP3A5 recipient genotype is unexpected if kidney transplant recipients have similar exposure of tacrolimus. PATIENTS & METHODS: We have undertaken a population-based, observational study, to investigate all the consecutive patients who received a kidney transplant at the Necker hospital between 2005 and 2015, who were treated with tacrolimus and for whom the CYP3A5 genotype was available...
January 2017: Pharmacogenomics
https://www.readbyqxmd.com/read/27960564/monocyte-chemoattractant-protein-1-mcp-1-ccl2-levels-and-its-association-with-renal-allograft-rejection
#7
Ali Raza, Sadaf Firasat, Shagufta Khaliq, Abdul Rafay Khan, Shafaq Mahmood, Tahir Aziz, Muhammad Mubarak, Syed Ali Anwar Naqvi, Syed Adibul Hasan Rizvi, Aiysha Abid
BACKGROUND: CCL2 is a chemoattractant for monocytes/macrophages, T cells, and natural killer cells. It is shown to be involved in the immunological responses against renal allograft. This study was conducted to access the role of urinary CCL2 expression in predicting the rejection episodes in renal transplant patients. METHOD: A total of 409 urine samples included in this study. The samples were consisted of (a) biopsy-proven graft rejection (n = 165); (b) non-rejection (n = 93); (c) non-biopsy stable-graft (n = 42), and (d) healthy renal donors (n = 109)...
December 14, 2016: Immunological Investigations
https://www.readbyqxmd.com/read/27934559/recurrent-nephrotic-syndrome-after-renal-transplant-in-children
#8
Bassam Saeed, Huda Mazloum
OBJECTIVES: Recurrent disease occurs in around 30% of children transplanted for steroid-resistant nephrotic syndrome. Its precipitating risk factors have rarely been studied in the Middle East. The aim of our study was to determine what characterizes posttransplant recurrence of nephrotic syndrome in Syrian children. MATERIALS AND METHODS: We performed a retrospective analysis of 12 nephrotic children who received 1 renal allograft at the Kidney Hospital in Damascus from 2002 to 2013...
December 2016: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/27932166/renal-allograft-failure-after-ipilimumab-therapy-for-metastatic-melanoma-a-case-report-and-review-of-the-literature
#9
A Jose, P Yiannoullou, S Bhutani, H Denley, M Morton, M Picton, A Summers, D van Dellen, T Augustine
Transplant recipients are at an increased risk of malignant melanoma, a result of chronic immunosuppression. Ipilimumab is a newer biological agent targeting T lymphocytes to potentiate an immune response against melanoma, and the use of this agent results in a new adverse effect profile that the clinician must be aware of while a patient is on therapy. We report the case of a male renal transplant recipient who developed graft failure while treated with ipilimumab and minimal immunosuppressive therapy for metastatic ocular melanoma, with biopsy evidence of glomerulonephritis and acute rejection...
November 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27932117/risk-factors-of-recurrence-of-diabetic-nephropathy-in-renal-transplants
#10
B Rodriguez Cubillo, B Rodriguez, M Calvo, V de la Manzanara, J Bautista, I Perez-Flores, N Calvo, A Moreno, A Shabaka, J Delgado, A I Sanchez-Fructuoso
BACKGROUND: Renal transplantation has been established as the treatment of choice for end-stage renal disease (ESRD) due to diabetic nephropathy. This study aimed to investigate the risk factors for recurrence of diabetic nephropathy (RDN) in renal allografts. METHODS: We studied 1,011 renal transplant patients from 1986 to 2003, of which 95 had ESRD due to diabetic nephropathy. We retrospectively analyzed the clinical characteristics and outcomes of RDN after renal transplantation...
November 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27932115/relationship-between-albuminuria-during-the-first-year-and-antibody-mediated-rejection-in-protocol-biopsies-in-kidney-transplant-recipients
#11
L Belmar Vega, E Rodrigo Calabia, J J Gómez Román, J C Ruiz San Millán, L Martín Penagos, M Arias Rodríguez
BACKGROUND: Antibody-mediated rejection is the main cause of deterioration of kidney transplants and frequently is detected only by means of protocol biopsies. The aim of this study was to relate the presence of albuminuria throughout the 1st year to the histologic findings detected by 1-year protocol biopsies in kidney graft recipients. METHODS: Retrospective observational study of 86 protocol biopsies 1 year after transplantation. Albuminuria was measured at 3, 6, 9, and 12 months in urine samples and expressed as albumin/creatinine (mg/g)...
November 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27932107/antibody-mediated-acute-vascular-rejection-of-kidney-allografts-fifteen-year-follow-up
#12
B Rodríguez Cubillo, I Pérez Flores, N Calvo, A Pascual, J A Cortés, M A Moreno, J Blanco, A Sánchez Fructuoso
BACKGROUND: Although acute vascular rejection (AVR) is associated with a high risk of graft loss, it remains unclear whether AVR with accompanied cellular or humoral rejection (AHR) has dissimilar outcomes. The aim of this study was to examine the association between subtypes of AVR and graft loss. METHODS: We assessed patients who provided biopsy samples for acute allograft rejection from 1998 to 2014. To investigate distinct rejection patterns, we retrospectively assessed rejection episodes with review of graft histology as well as donor-specific anti-HLA antibodies when available...
November 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27932103/prognostic-value-of-modified-banff-score-in-the-evolution-of-renal-function
#13
I Bancu, A Hernández-Gallego, D López-Alvárez, I Lozano-Ramos, L Cañas-Sole, J Juega-Mariño, M Pérez-Mir, F Borras-Seres, J Bonet-Sol, R Lauzurica
BACKGROUND: Some lesions not included in the Banff classification, such as inflammation in the scarred areas and total inflammation, have been described to have prognostic value in the evaluation of graft biopsies. Our aim was to reassess kidney graft biopsies and study the impact of histopathologic lesions, both those graded in the Banff classification and those related to inflammation, on the graft function and evolution. METHODS: We selected 20 biopsies exhibiting chronic pathology without a specific phenotype, and we reevaluated them with the use of a modified Banff score...
November 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27932097/desensitization-protocol-in-recipients-of-deceased-kidney-donor-with-donor-specific-antibody-low-titers
#14
J Kanter Berga, A Sancho Calabuig, E Gavela Martinez, N Puig Alcaraz, A Avila Bernabeu, J Crespo Albiach, P Molina Vila, S Beltrán Catalan, L Pallardó Mateu
BACKGROUND: Kidney transplantation is the better option for end-stage renal disease (ESRD), but for patients with human leukocyte antigen (HLA) sensitization, the wait times are significantly longer than for patients without antibodies. Many desensitization protocols have been described involving strong immunosuppression, the use of apheresis, and B-cell-modulating therapies. We have designed a desensitization protocol from day 0 for deceased donor kidney transplantation. Our aim was to present our initial experience with five kidney transplant patients...
November 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27928159/effect-of-trem-1-blockade-and-single-nucleotide-variants-in-experimental-renal-injury-and-kidney-transplantation
#15
A Tammaro, J Kers, D Emal, I Stroo, G J D Teske, L M Butter, N Claessen, J Damman, M Derive, G Navis, S Florquin, J C Leemans, M C Dessing
Renal ischemia reperfusion (IR)-injury induces activation of innate immune response which sustains renal injury and contributes to the development of delayed graft function (DGF). Triggering receptor expressed on myeloid cells-1 (TREM-1) is a pro-inflammatory evolutionary conserved pattern recognition receptor expressed on a variety of innate immune cells. TREM-1 expression increases following acute and chronic renal injury. However, the function of TREM-1 in renal IR is still unclear. Here, we investigated expression and function of TREM-1 in a murine model of renal IR using different TREM-1 inhibitors: LP17, LR12 and TREM-1 fusion protein...
December 8, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27919127/-deceased-donor-kidney-transplantation-from-a-liver-transplantation-recipient
#16
Shuhei Koike, Takashi Kobayashi, Yoshiyuki Okada, Shinsuke Shibuya, Kaoru Sakai, Yukari Tanaka, Shusuke Akamatsu, Hiromitsu Negoro, Naoki Terada, Toshinari Yamasaki, Yoshiyuki Matsui, Takahiro Inoue, Tomomi Kamba, Yumi Umeya, Toshimi Kaido, Osamu Ogawa
We report a 40-year-old man with end-stage renal disease due to IgA nephropathy who underwent deceased donor kidney transplantation. The donor was diagnosed to be brain-dead due to cerebral hemorrhage after her second liver transplantation for non-viral liver cirrhosis. Intraoperative 1-hour biopsy of the graft kidney revealed moderate global glomerular sclerosis (22%) and interstitial fibrosis (40%) consistent with underlying nephrosclerosis or calcineurin inhibitor nephrotoxicity. Although hemodialysis was needed until the graft began functioning several days after the kidney transplantation, the postoperative clinical course thereafter was uneventful and the graft functioned well with stable serum creatinine levels around 2...
October 2016: Hinyokika Kiyo. Acta Urologica Japonica
https://www.readbyqxmd.com/read/27900974/disseminated-mycobacteria-chelonae-infection-in-a-kidney-pancreas-transplant-recipient-a-case-report-and-review-of-the-literature
#17
Shafi Malik, Ananda Ghosh, Shahid Husain
A 40-year-old male with a long-standing history of type 1 diabetes with end-stage renal failure underwent combined kidney-pancreas (KP) transplant from a standard criteria donor. Post-operative course was uncomplicated with good primary function of both transplant grafts. Induction was with thymoglobulin and maintenance immunosuppression was with tacrolimus, mycophenolate mofetil and prednisolone. Nine weeks post-transplant, the patient developed dysfunction of both grafts. Panel reactive antibody testing revealed that the patient had developed a de novo donor-specific antibody and considering an antibody-mediated rejection the patient was treated with intravenous pulse methyl prednisone 500 mg ×3 doses, IV immunoglobulin 2 mg/kg in two divided doses, and ATG 7 mg/kg (total dose of 700 mg)...
November 2016: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/27888534/early-steroid-withdrawal-results-in-improved-patient-and-graft-survival-and-lower-risk-of-post-transplant-cardiovascular-risk-profiles-a-single-center-10-year-experience
#18
Reynold Lopez-Soler, Ryan Chan, Jessica Martinolich, Lisa Park, Ashar Ata, Nikolaos Chandolias, David Conti
Long term use of steroids results in predictable secondary effects that can lead to increased morbidity and mortality. In this study, we present 10 years' worth of data of early steroid withdrawal (ESW) immunosuppression consisting of Mycophenolate, Sirolimus, and Tacrolimus. From 2003 to 2013, 563 kidney transplant recipients were weaned off steroids prior to discharge. We compared outcomes with that of our 65 historical controls maintained on steroids. We analyzed graft and patient survival and determined the incidence of steroid-related comorbidities such as hypertension, hypercholesterolemia, diabetes, coronary artery disease, and weight gain...
November 26, 2016: Clinical Transplantation
https://www.readbyqxmd.com/read/27873516/cyclosporine-sparing-effect-of-enteric-coated-mycophenolate-sodium-in-de-novo-kidney-transplantation
#19
Su Hyung Lee, Jae Berm Park, Chang Kwon Oh, Myoung Soo Kim, Sung Joo Kim, Jongwon Ha
PURPOSE: The increased tolerability of enteric-coated mycophenolate sodium (EC-MPS), compared to mycophenolate mofetil, among kidney transplant recipients has the potential to facilitate cyclosporine (CsA) minimization. Therefore, a prospective trial to determine the optimum EC-MPS dose in CsA-based immunosuppression regimens is necessary. MATERIALS AND METHODS: A comparative, parallel, randomized, open-label study was performed for 140 patients from four centers to compare the efficacy and tolerability of low dose CsA with standard dose EC-MPS (the investigational group) versus standard dose CsA with low dose EC-MPS (the control group) for six months in de novo kidney transplant recipients...
January 2017: Yonsei Medical Journal
https://www.readbyqxmd.com/read/27873464/hyalinosis-lesions-in-renal-transplant-biopsies-time-dependent-complexity-of-interpretation
#20
Gunilla Einecke, Jeff Reeve, Philip F Halloran
Because calcineurin inhibitor immunosuppressive drugs (CNIs) induce arteriolar hyalinosis (ah) in kidney transplants, ah lesions can potentially provide information about drug exposure. We studied the relationship of ah lesions to findings and outcomes in 562 indication biopsies taken 3 days to 35 years post-transplant. Prevalence of ah lesions increased with time post-transplant (TxBx). Ah-scores correlated with arterial intimal thickening and atrophy-fibrosis but, unlike atrophy-fibrosis, did not increase until after 500 days because of a background of ah1 lesions in early biopsies reflecting donor aging...
November 22, 2016: American Journal of Transplantation
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