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Kidney cytomegalovirus

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https://www.readbyqxmd.com/read/28340829/impact-of-prophylaxis-vs-pre-emptive-approach-for-cytomegalovirus-infection-in-kidney-transplant-recipients
#1
O Kır, A Zeytinoğlu, B Arda, M Yılmaz, G Aşçı, H Töz
Cytomegalovirus (CMV) is the most common viral infection during the post-transplant period, and it is one of the major causes of morbidity and mortality in kidney transplantation. In this study, the incidence and impact of pre-emptive and prophylactic approaches and long-term effects on graft and patient survival of CMV infection were investigated. Among 493 adult kidney transplant recipients, pretransplant CMV IgG-negative patients and patients with a follow-up shorter than a month were excluded. The patients were divided into 2 groups: pre-emptive group (n = 187, regular screening and acyclovir 400 mg twice daily for 6 months), and prophylaxis group (n = 275, valganciclovir 450 mg/d for 3 months)...
April 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28340806/average-tacrolimus-trough-level-in-the-first-month-after-transplantation-may-predict-acute-rejection
#2
S Aktürk, Ş Erdoğmuş, G Kumru, A H Elhan, Ş Şengül, A Tüzüner, K Keven
BACKGROUND: Although tacrolimus is one of the essential drugs used for the prevention of rejection in kidney recipients, target trough levels are not well established. In this study, we aimed to investigate the association between average tacrolimus trough levels (TTLs) of the first month after transplantation and biopsy-proven acute rejection (BPAR) during the first 12 months after transplant. METHODS: A total of 274 patients who underwent kidney-alone transplantation between 2002 and 2014 were enrolled in the study...
April 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28320553/kidney-transplantation-for-kidney-failure-due-to-multiple-myeloma-case-reports
#3
Thuy X Le, Jeffrey L Wolf, Carmen A Peralta, Allison B Webber
Transplantation centers have historically considered a history of multiple myeloma as a contraindication to kidney transplantation due to high recurrence rates and poor transplant survival. However, there have been significant advances in the treatment of multiple myeloma, with improved patient survival, which may allow for successful kidney transplantation in these patients. We report on 4 patients who underwent kidney transplantation at our institution between 2009 and 2015 after having achieved a very good partial response or better with chemotherapy and autologous stem cell transplantation...
March 17, 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/28320458/b-cell-epitope-of-human-cytomegalovirus-phosphoprotein-65-hcmv-pp65-induced-anti-dsdna-antibody-in-balb-c-mice
#4
Ao HoHsieh, Chin Man Wang, Yeong-Jian Jan Wu, Albert Chen, Ming-I Chang, Ji-Yih Chen
BACKGROUND: HCMV phosphoprotein 65 (HCMVpp65) is a putative immunogen that acts as an accelerator, inducing autoantibody and exacerbating autoimmune response in susceptible animals. The immunity to pp65336-439 instigates autoimmunity, suggesting that pp65336-439 contains crucial B cell epitope(s) for the development of nephritis. This study narrowed down the target epitope to pp65422-439 for immunization of BALB/c mice and mapping of B cell epitope. METHODS: The target epitope pp65422-439 reactivity and B cell epitope mapping was examined in serum from pp65422-439-immunized mice and patients with systemic lupus erythematosus (SLE)...
March 21, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28315348/fc-gamma-receptor-3a-polymorphism-predicts-the-incidence-of-urinary-tract-infection-in-kidney-transplant-recipients
#5
Lalit Kumar Das, Kentaro Ide, Asuka Tanaka, Hiroshi Morimoto, Seiichi Shimizu, Naoki Tanimine, Yuka Tanaka, Hideki Ohdan
We investigated the impact of polymorphisms in host innate immunoregulatory genes on the development of infectious complications after kidney transplantation (KT). The single-nucleotide polymorphisms (SNPs) of C1QA [276 A/G], FCGR2A [131 H/R], and FCGR3A [158 F/V], genes encoding the Fc gamma receptor (FcγR), were analyzed in 81 KT recipients in relation to the occurrences of postoperative infectious complications within 30 days after KT. Consistent with a lower affinity of the isoform encoded by the FCGR3A [158 F] to both IgG1 and IgG3, a significantly higher incidence of urinary tract infections (UTIs) was observed in the FCGR3A [158 F/V or F/F] individuals (65...
March 14, 2017: Human Immunology
https://www.readbyqxmd.com/read/28273393/a-retrospective-study-to-describe-the-epidemiology-and-outcomes-of-opportunistic-infections-after-abdominal-organ-transplantation
#6
Mia Helfrich, Peter Dorschner, Kathryn Thomas, Valentina Stosor, Michael G Ison
BACKGROUND: Most epidemiologic studies of opportunistic infections (OI) following abdominal organ transplant (AOT) are derived prior to the era of contemporary immunosuppression and prophylaxis. These studies suggest that most OI occur within the first 6 months post transplant. METHOD: In this single-center, retrospective cohort study, we describe the epidemiology of OI in 359 consecutive AOT recipients, in the era of contemporary prophylaxis practices and alemtuzumab induction in kidney and simultaneous pancreas-kidney transplant recipients...
March 8, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28261220/dual-role-of-natural-killer-cells-on-graft-rejection-and-control-of-cytomegalovirus-infection-in-renal-transplantation
#7
REVIEW
Miguel López-Botet, Carlos Vilches, Dolores Redondo-Pachón, Aura Muntasell, Aldi Pupuleku, José Yélamos, Julio Pascual, Marta Crespo
Allograft rejection constitutes a major complication of solid organ transplantation requiring prophylactic/therapeutic immunosuppression, which increases susceptibility of patients to infections and cancer. Beyond the pivotal role of alloantigen-specific T cells and antibodies in the pathogenesis of rejection, natural killer (NK) cells may display alloreactive potential in case of mismatch between recipient inhibitory killer-cell immunoglobulin-like receptors (KIRs) and graft HLA class I molecules. Several studies have addressed the impact of this variable in kidney transplant with conflicting conclusions; yet, increasing evidence supports that alloantibody-mediated NK cell activation via FcγRIIIA (CD16) contributes to rejection...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28260458/successful-cost-effective-prevention-of-cytomegalovirus-disease-in-kidney-transplant-recipients-using-low-dose-valganciclovir
#8
Osama Gheith, Medhat A Halim, Torki Al-Otaibi, Hany Mansour, Ahmed Mosaad, Hassanein Abo Atteya, Zakaria Zakaria, Tarek Said, Prasad Nair, Narayanam Nampoory
OBJECTIVES: Low-dose valganciclovir prophylaxis is still under investigation in renal transplant procedures. Our aim was to assess the cost effectiveness of 450 mg versus 900 mg valganciclovir prophylaxis in kidney transplant recipients. MATERIALS AND METHODS: In this prospective trial, 201 kidney transplant patients were randomized (1:1) to receive 450 mg/d (group 1, n = 100) or 900 mg/d (group 2, n = 101) valganciclovir prophylaxis for the first 6 months after transplant...
February 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28260447/preliminary-results-of-a-newly-established-organ-transplantation-program-in-a-teaching-hospital
#9
Hammam Momani, Samer Algeizawi, Badia Shamoun, Atef Abu Taha, Hamed Alshakhatreh, Abdel-Hadi Breizat
OBJECTIVES: End-stage renal disease is the complete failure of kidney function; kidney transplant offers the best survival advantage. We analyzed data from Al-Basheer Hospital's newly established transplant program and present our kidney transplant results from the first year of operation. MATERIALS AND METHODS: Between April 2015 and June 2016, 20 kidney transplants were performed (19 living-related donors and 1 deceased donor). We assessed the demographic data, surgical techniques employed, complications, immunosuppressive drugs used, and graft and patient survival rates...
February 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28260443/outcome-of-renal-transplant-in-recipients-with-vasculitis
#10
Samia Barbouch, Meriam Hajji, Raja Aoudia, Monther Ounissi, Asma Zammouri, Rym Goucha, Fathi Ben Hamida, Mohammed Mongi Bacha, Ezzedine Abderrahim, Taieb Ben Abdallah
OBJECTIVES: End-stage renal disease develops in a high percentage of patients with vasculitis, in whom kidney transplant has become a therapeutic option. However, limited data are available on the prognosis and outcomes after kidney transplant in these patients. We aimed to compare the long-term graft survival and graft function in 8 renal transplant recipients with vasculitis (granulomatosis with polyangiitis, microscopic polyangiitis, Goodpasture syndrome, and Henoch-Schonlein purpura) with the other kidney recipients at a single center...
February 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28229376/the-pharmacogenetics-of-tacrolimus-in-corticosteroid-sparse-pediatric-and-adult-kidney-transplant-recipients
#11
Mads Juul Madsen, Troels K Bergmann, Kim Brøsen, Helle Charlotte Thiesson
INTRODUCTION: Tacrolimus is a calcineurin inhibitor used as an immunosuppressant drug in solid organ transplantation, and is mainly metabolized by cytochrome P450 (CYP) 3A4 and CYP3A5. Studies have shown an association between the CYP3A5 genotype and tacrolimus dose-adjusted trough concentrations. Variants in the genes PPARA, POR and CYP3A4 have recently been shown to influence tacrolimus metabolism. Furthermore, pharmacokinetic interaction between corticosteroid treatment and tacrolimus has been shown...
February 22, 2017: Drugs in R&D
https://www.readbyqxmd.com/read/28191298/asymptomatic-epstein-barr-virus-shedding-in-the-urine-of-kidney-transplant-recipients-case-reports-and-review-of-the-literature
#12
Maryam Rahbar, Gholamreza Poormand, Masoud Karkhaneh Mahmoodi, Aboozar Jazayeri, Seyed Mohammad Jazayeri
Epstein-Barr virus (EBV) is associated with a wide range of malignancies and complications like post-transplant lymphoproliferative disorder (PTLD). To suppress active EBV infection in transplant recipients, who are at a heightened risk of developing PTLD, EBV DNAemia monitoring has been recommended. Quantitative multiplex real time polymerase chain reaction (QMRTPCR) offered the advantage of detection of more than one target in the same sample. We present four cases of kidney transplant recipient who were admitted for rising serum creatinine between 9 and 20 months post-transplant with a suspicion of BKV-associated nephropathy...
December 31, 2016: Infectious Disease Reports
https://www.readbyqxmd.com/read/28134984/conversion-from-sirolimus-to-everolimus-in-long-term-liver-graft-recipients
#13
Nina Weiler, Nigar Bilge, Sven Troetschler, Johannes Vermehren, Andreas Anton Schnitzbauer, Eva Herrmann, Christoph Sarrazin, Stefan Zeuzem, Martin-Walter Welker
Immunosuppression by inhibition of the mechanistic target of rapamycin (mTOR) is a promising approach after liver transplantation. The mTOR inhibitor sirolimus was used in selected liver graft recipients despite safety concerns and lack of approval. Everolimus is another mTOR inhibitor approved after liver transplantation. It is currently unknown, whether conversion of sirolimus to everolimus is safe in long-term liver graft recipients. Long-term liver graft recipients treated with sirolimus were converted to everolimus...
January 30, 2017: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28131494/immunomodulation-by-hyperimmunoglobulins-after-solid-organ-transplantation-beyond-prevention-of-viral-infection
#14
REVIEW
Rogier van Gent, Herold J Metselaar, Jaap Kwekkeboom
Hyperimmunoglobulins are pharmaceutical formulations of human IgG which contain high titers of antibodies against specific viruses. They have been successfully used in solid organ transplantation (SOT) to prevent Cytomegalovirus (CMV) and Hepatitis B Virus (HBV) infection. The introduction of effective and cheaper antiviral drugs has resulted in decreasing usage of hyperimmunoglobulins in SOT. However, it may still be attractive to combine antiviral drug therapy with hyperimmunoglobulins after SOT, as there is some evidence that hyperimmunoglobulins, similar to high doses of intravenous immunoglobulins (IVIgs), might exert anti-inflammatory activity and thereby prevent immunological graft damage and improve graft and patient survival...
January 19, 2017: Transplantation Reviews
https://www.readbyqxmd.com/read/28129395/primary-cytomegalovirus-infection-in-seronegative-kidney-transplant-patients-is-associated-with-protracted-cold-ischemic-time-of-seropositive-donor-organs
#15
Fabian Schlott, Dominik Steubl, Dieter Hoffmann, Edouard Matevossian, Jens Lutz, Uwe Heemann, Volker Hösel, Dirk H Busch, Lutz Renders, Michael Neuenhahn
Human Cytomegalovirus (CMV) can lead to primary infection or reactivation in CMV-seronegative or -seropositive kidney transplant recipients, respectively. Complications comprise severe end-organ diseases and acute or chronic transplant rejection. Risk for CMV manifestation is stratified according to the CMV-IgG-serostatus, with donor+/recipient- (D+/R-) patients carrying the highest risk for CMV-replication. However, risk factors predisposing for primary infection in CMV-seronegative recipients are still not fully elucidated...
2017: PloS One
https://www.readbyqxmd.com/read/28121742/association-of-baseline-viral-serology-and-sirolimus-regimens-with-kidney-transplant-outcomes-a-14-year-registry-based-cohort-study-in-the-united-states
#16
Alfonso H Santos, Michael J Casey, Wen Xuerong, Karl L Womer
BACKGROUND: The risks for transplant outcomes associated with baseline viral serostatus in kidney transplant recipients (KTR) on sirolimus have not been widely studied. METHODS: We performed a cohort-study of 61 590 adult KTR in 2000 to 2013. We used Cox regression models to determine the adjusted hazard ratio (aHR) of patient death, death-censored graft loss and posttransplant malignancy associated with the baseline serostatus (+ or -: hepatitis B core [HBc], hepatitis C virus [HCV], Epstein-Barr virus [EBV], or cytomegalovirus [CMV]) in KTR on sirolimus (SRL) + mycophenolate (MPA) or SRL + tacrolimus (Tac), relative to the control-regimen: Tac + MPA...
February 2017: Transplantation
https://www.readbyqxmd.com/read/28104150/comparison-of-mizoribine-and-mycophenolate-mofetil-with-a-tacrolimus-based-immunosuppressive-regimen-in-living-donor-kidney-transplantation-recipients-a-retrospective-study-in-china
#17
Y Shi, H Liu, X-G Chen, Z-Y Shen
BACKGROUND: A retrospective study was conducted to investigate the prevalence of gastrointestinal (GI) symptoms as well as the efficacy and safety of mizoribine (MZR) and mycophenolate mofetil (MMF) in Chinese living-donor kidney transplantation (LDKT). METHODS: Forty-two recipients enrolled between January 2012 and March 2014 were treated with either MZR (n = 22) or MMF (n = 20). All patients were treated in combination with a tacrolimus-based immunosuppressive regimen, besides the study drugs...
January 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28091392/the-impact-of-viral-load-and-time-to-onset-of-cytomegalovirus-replication-on-long-term-graft-survival-after-kidney-transplantation
#18
Tomas Reischig, Martin Kacer, Petra Hruba, Pavel Jindra, Ondrej Hes, Daniel Lysak, Mirko Bouda, Ondrej Viklicky
BACKGROUND: Asymptomatic cytomegalovirus (CMV) infection is associated with graft dysfunction and failure. However, no study assessed CMV viral load in terms of the risk for graft failure. METHODS: In prospective cohort of kidney transplant recipients, we assessed the impact of CMV DNAemia on the overall graft survival and the incidence of moderate-to-severe interstitial fibrosis and tubular atrophy (IF/TA) in protocol biopsy at 36 months. CMV DNAemia was stratified by viral load in whole blood...
January 16, 2017: Antiviral Therapy
https://www.readbyqxmd.com/read/28089555/epstein-barr-virus-and-renal-transplantation
#19
REVIEW
Jade Le, Christine M Durand, Irfan Agha, Daniel C Brennan
Epstein-Barr virus (EBV) is a gamma herpesvirus associated with diseases ranging from asymptomatic viremia to post-transplant malignancies in kidney transplant recipients. EBV specifically is associated with post-transplantation lymphoproliferative disorder (PTLD), in kidney transplant recipients, with increased risk in EBV seronegative patients with EBV seropositive donors on intensified immunosuppression. The diagnosis of PTLD relies on clinical suspicion plus tissue biopsy with polymerase chain reaction (PCR) testing of blood currently used for risk determination in high-risk recipients...
January 2017: Transplantation Reviews
https://www.readbyqxmd.com/read/28088953/-research-of-mhla-g-and-the-receptor-expression-with-kidney-rejection-and-cmv-active-infection-following-kidney-transplantation
#20
L L Bi, Y Gao, Y J Sun, X R Kong, X Y He, X H Ma, W H Zhang, L Xiao, B Y Shi
Objective: To study the expression of membrane HLA-G (mHLA-G) and the receptor immunoglobulin-like transcript 2(ILT2) on lymphocyte and find their association with rejection and cytomegalovirus (CMV) infection after renal transplantation. Methods: A total of 88 cases of renal transplant recipients for the first time from February 2014 to February 2016 were studied in this work. Recipients can be divided into rejection group (n=12) and stable renal function group (n=41) according to whether rejection occurred...
January 10, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
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