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21 papers 0 to 25 followers
By Isabel Acosta-Ochoa Nephrology senior staff. Valladolid. Spain
https://www.readbyqxmd.com/read/29025381/adenovirus-infection-as-a-cause-of-fever-of-unknown-origin-and-allograft-dysfunction-in-a-kidney-transplant-recipient
#1
Michelle Saliba, Hala Kfoury Assouf, Souodod Abbas, Pierre Abi Hanna, Gaby Kamel, Antoine Barbari
With the recent introduction of more potent modern immunosuppressive regimens in solid-organ transplant, new types of viral infections such as adenovirus are emerging as a potential cause for graft dysfunction and loss. We report a case of 41-year-old male patient with end-stage renal disease from recurrent kidney stones who underwent kidney transplant from a deceased 12-year-old female donor. He developed adenoviral infection with acute cystitis, microscopic hematuria, and necrotizing interstitial nephritis associated with graft dysfunction within the first month of the postoperative period...
October 12, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28665892/aggregating-marginal-gains-in-posttransplant-cmv-risk-stratification
#2
Simon Ball
No abstract text is available yet for this article.
October 2017: Transplantation
https://www.readbyqxmd.com/read/28609473/a-delicate-balance-between-rejection-and-bk-polyomavirus-associated-nephropathy-a-retrospective-cohort-study-in-renal-transplant-recipients
#3
Lilli Gard, Willem van Doesum, Hubert G M Niesters, Willem J van Son, Arjan Diepstra, Coen A Stegeman, Henk Groen, Annelies Riezebos-Brilman, Jan Stephan Sanders
BACKGROUND: The immunosuppressive agents mycophenolate acid (MPA) and tacrolimus (Tac) are associated with a higher incidence of BK polyomavirus nephropathy (BKPyVAN). In this observational retrospective cohort study, the frequency of BK polyomavirus (BKPyV) complications over a 24-month period was studied. METHODS: 358 renal transplant recipients (RTR) treated with MPA, with either cyclosporine A (CsA) (CsAM group) or Tac (TacM group) and mostly prednisolone, were included...
2017: PloS One
https://www.readbyqxmd.com/read/28594749/cmv-specific-t-cell-monitoring-offers-superior-risk-stratification-of-cmv-seronegative-kidney-transplant-recipients-of-a-cmv-seropositive-donor
#4
Thomas Schachtner, Maik Stein, Petra Reinke
BACKGROUND: Detectable cytomegalovirus (CMV)-specific T cells in CMV-seronegative kidney transplant recipients (KTRs) have been attributed to an absence of circulating antibodies despite CMV sensitization. The diagnostic value of CMV-specific T cells, however, needs to be implemented in risk stratification for CMV replication. METHODS: Three hundred twenty-six KTRs were studied and classified with respect to CMV serostatus and presence of CMV-specific T cells. Samples were collected pretransplantation, at +1, +2, and +3 months posttransplantation...
October 2017: Transplantation
https://www.readbyqxmd.com/read/28512328/tacrolimus-blood-level-fluctuation-predisposes-to-coexisting-bk-virus-nephropathy-and-acute-allograft-rejection
#5
Chia-Lin Shen, An-Hang Yang, Tse-Jen Lien, Der-Cherng Tarng, Chih-Yu Yang
BK virus nephropathy (BKVN) and allograft rejection are two distinct disease entities which occur at opposite ends of the immune spectrum. However, they coexist in renal transplant recipients. Predisposing factors for this coexistence remain elusive. We identified nine biopsy-proven BKVN patients with coexisting acute rejection, and 21 patients with BKVN alone. We retrospectively analyzed the dosage and blood concentrations of immunosuppressants during the 3-month period prior to the renal biopsy between the two patient groups...
May 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28513810/epstein-barr-virus-encephalitis-in-solid-organ-transplantation
#6
Jillian S Y S Y, Zhi Mei Low, Iain Abbott, Lani Shochet, John Kanellis, Richard A Kitching, Tony M Korman
Epstein-Barr virus (EBV) is typically associated with post transplant lymphoproliferative disease (PTLD) after solid organ and stem cell transplantation. However, it is rarely associated with neurological complications. We report a case of severe encephalitis complicating primary EBV infection six months post renal transplantation, and review the literature on EBV encephalitis in solid organ transplantation in adults. A 55-year-old male presented 6 months post cadaveric renal transplant with headache, fever and confusion...
July 2017: New Microbiologica
https://www.readbyqxmd.com/read/28510315/bk-virus-nephropathy-revisited
#7
EDITORIAL
M Mengel
No abstract text is available yet for this article.
August 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28509373/bk-viremia-surveillance-and-outcomes-in-simultaneous-pancreas-kidney-transplant-recipients
#8
Scott G Westphal, Elizabeth R Lyden, Eric D Langewisch, Clifford D Miles
BACKGROUND: While screening for asymptomatic BK viremia (BKV) has been well studied in isolated kidney transplant recipients, there is a paucity of published outcomes in simultaneous pancreas-kidney (SPK) transplant recipients who underwent BKV screening followed by pre-emptive reduction in immunosuppression. METHODS: This is a single-center, retrospective review of 31 consecutive SPK recipients who were transplanted over a 5-year period following the initiation of a serum BKV screening protocol...
August 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28432714/high-human-cytomegalovirus-dnaemia-early-post-transplantation-associates-with-irreversible-and-progressive-loss-of-renal-function-a-retrospective-study
#9
Wouter T Lollinga, Lilli Rurenga-Gard, Willem van Doesum, Rik van Bergen, Arjan Diepstra, Judith M Vonk, Annelies Riezebos-Brilman, H G M Niesters, Willem J van Son, Jacob van den Born, Jan-Stephan Sanders
Transplant recipients are prone to viral infections, which could affect renal transplantation outcome. Our aim was to assess the effects of early human cytomegalovirus (CMV) DNAemia on transplant renal function. A total of 264 (age 50.9 ± 13.5; male 55%) renal transplantation recipients undergoing preemptive anti-CMV therapy were retrospectively categorized based on early (<3 months post-Tx) CMV peak viral load (PVL); PVL ≤ 536, PVL536-6310, or PVL > 6310 International Units/ml (IU/ml). Estimated glomerular filtration rate (eGFR) was analyzed between 1 and 36 months post-transplantation with Kruskal-Wallis test, linear regression, and a linear mixed-effects model...
August 2017: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/28418354/-clinical-and-morphological-signs-of-viral-damage-to-a-kidney-transplant
#10
S E Solovyeva, E M Paltseva, M M Morozova, M M Kaabak, N A Krainik, A V Matveev
AIM: Тo compare morphological changes and results of immunohistochemical (IHC) identification of viruses (polyomaviruses, adenoviruses, and herpesviruses) in the biopsy specimens with their clinical manifestations in recipients of renal transplants. MATERIAL AND METHODS: Morphological and IHC studies were conducted using 71 needle renal transplant biopsy specimens from patients in the study group and 10 renal biopsy specimens from those in the control group. A number of clinical indicators were estimated...
2017: Arkhiv Patologii
https://www.readbyqxmd.com/read/28376031/the-immune-response-to-epstein-barr-virus-and-implications-for-posttransplant-lymphoproliferative-disorder
#11
REVIEW
Olivia M Martinez, Sheri M Krams
Posttransplant lymphoproliferative disorder (PTLD) is a serious complication in organ transplant recipients and is most often associated with the Epstein Barr virus (EBV). EBV is a common gammaherpes virus with tropism for B lymphocytes and infection in immunocompetent individuals is typically asymptomatic and benign. However, infection in immunocompromised or immunosuppressed individuals can result in malignant B cell lymphoproliferations, such as PTLD. EBV+ PTLD can arise after primary EBV infection, or because of reactivation of a prior infection, and represents a leading malignancy in the transplant population...
September 2017: Transplantation
https://www.readbyqxmd.com/read/28371308/bk-virus-nephropathy-histological-evolution-by-sequential-pathology
#12
B J Nankivell, J Renthawa, R N Sharma, K Kable, P J O'Connell, J R Chapman
Reactivation of BK virus in renal allografts causes a destructive chronic infection. This single-center retrospective cohort study describes the evolution of BK virus allograft nephropathy (BKVAN) from 63 kidneys (from 61 patients) using sequential histopathology (454 biopsies, averaging 7.8 ± 2.6 per kidney) followed for 60.1 mo. Uninfected protocol biopsies formulated time-matched control Banff scores (n = 975). Interstitial inflammation occurred in 73% at diagnosis, correlating with viral histopathology (r = 0...
August 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28340829/impact-of-prophylaxis-vs-pre-emptive-approach-for-cytomegalovirus-infection-in-kidney-transplant-recipients
#13
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/28176463/severe-chronic-norovirus-diarrheal-disease-in-transplant-recipients-clinical-features-of-an-under-recognized-syndrome
#14
Robin K Avery, Bonnie E Lonze, Edward S Kraus, Kieren A Marr, Robert A Montgomery
BACKGROUND: Norovirus (NV) infection has been reported as a cause of severe chronic diarrhea in transplant recipients, but this entity remains under-recognized in clinical practice, leading to diagnostic delays. Transplant clinicians should become familiar with this syndrome in order to facilitate early detection and management. METHODS: Demographic, clinical, and outcomes variables were summarized from a series of transplant recipients with positive stool NV reverse transcription polymerase chain reaction (RT-PCR) assays at Johns Hopkins in 2013-2014...
April 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28137206/biopsy-proven-bk-virus-associated-nephropathy-clinico-pathologic-correlations
#15
Sarah Jahdali, Noura Al Oudah, Khaled O Alsaad, Hala Kfoury, Salem Qurashi, Abdulla Al Sayyari
OBJECTIVES: Our objective was to study the clinico-pathologic correlations in BK virus nephropathy. MATERIALS AND METHODS: We conducted a retrospective study of all patients with biopsy-proven polyoma (BK) virus infection. We compared their survival and renal outcomes versus BK virus-negative patients with biopsy-proven graft rejection. Histopathologic characterization by a blinded nephropathologist was performed. RESULTS: BK nephropathy was found in 10 patients biopsied for graft dysfunction...
June 2017: Experimental and Clinical Transplantation
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
#16
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/27772620/cytomegalovirus-and-other-%C3%AE-herpesviruses
#17
REVIEW
Carlos A Q Santos
Cytomegalovirus (CMV), human herpes virus (HHV)-6, and HHV-7 are ubiquitous β-herpesviruses that can cause opportunistic infection and disease in kidney transplant recipients. Active CMV infection and disease are associated with acute allograft failure and death, and HHV-6 and HHV-7 replication are associated with CMV disease. CMV prevention strategies are used commonly after kidney transplantation, and include prophylaxis with antiviral medications and preemptive treatment upon the detection of asymptomatic viral replication in blood...
September 2016: Seminars in Nephrology
https://www.readbyqxmd.com/read/27639246/multicenter-evaluation-of-efficacy-and-safety-of-low-dose-versus-high-dose-valganciclovir-for-prevention-of-cytomegalovirus-disease-in-donor-and-recipient-positive-d-r-renal-transplant-recipients
#18
MULTICENTER STUDY
Seth Heldenbrand, Chenghui Li, Rosemary P Cross, Kelly A DePiero, Travis B Dick, Kara Ferguson, Miae Kim, Erin Newkirk, Jeong M Park, Janice Sudaria-Kerr, Eric M Tichy, Kimi R Ueda, Renee Weng, Jesse Wisniewski, Steven Gabardi
BACKGROUND: The cytomegalovirus (CMV) donor-positive/recipient-positive (D+/R+) population is the largest proportion of renal transplant recipients (RTR). Guidelines for prevention of CMV in the intermediate-risk D+/R+ population include prophylaxis with valganciclovir (VGCV) 900 mg/day for 3 months. This study is the first head-to-head analysis, to our knowledge, comparing the efficacy and safety CMV prophylaxis of VGCV 450 vs 900 mg/day for 3 months in D+/R+ RTR. METHODS: A multicenter, retrospective analysis evaluated 478 adult RTR between January 2008 and October 2011...
December 2016: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/27286324/cytomegalovirus-negative-kidney-transplant-recipients-are-at-an-increased-risk-for-malignancy-after-kidney-transplantation
#19
Benaya Rozen-Zvi, Shelly Lichtenberg, Hefziba Green, Ori Cohen, Avry Chagnac, Eytan Mor, Ruth Rahamimov
BACKGROUND: The effect of cytomegalovirus (CMV) serology status on malignancy risk in kidney transplanted patients is not clear yet. METHODS: In a nested case-control study, CMV serology status was compared between patients with a malignancy and 2:1 matched control patients without a malignancy. In a cohort study, the hazard of malignancy was compared between patients that were CMV-negative but had a CMV-positive donor and other patients, using Cox analysis. RESULTS: Fifty-two of 599 patients transplanted in our center between 2001 and 2014 developed a malignancy...
September 2016: Clinical Transplantation
https://www.readbyqxmd.com/read/26991039/the-cell-biology-of-cytomegalovirus-implications-for-transplantation
#20
REVIEW
H Kaminski, J A Fishman
Interpretation of clinical data regarding the impact of cytomegalovirus (CMV) infection on allograft function is complicated by the diversity of viral strains and substantial variability of cellular receptors and viral gene expression in different tissues. Variation also exists in nonspecific (monocytes and dendritic cells) and specific (NK cells, antibodies) responses that augment T cell antiviral activities. Innate immune signaling pathways and expanded pools of memory NK cells and γδ T cells also serve to amplify host responses to infection...
August 2016: American Journal of Transplantation
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