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By Isabel Acosta-Ochoa Nephrology senior staff. Valladolid. Spain
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...
February 7, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
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...
January 30, 2017: Experimental and Clinical Transplantation
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
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
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
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
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
T Chiasakul, N Townamchai, K Jutivorakool, W Chancharoenthana, C Thongprayoon, S Watanatorn, Y Avihingsanon, K Praditpornsilpa, N Srisawat
BACKGROUND: Cytomegalovirus (CMV) infection significantly causes morbidity in kidney transplant (KT) recipients. This study aims to investigate the incidence, timing, and risk factors of CMV infection in KT recipients. METHODS: This is a single-center retrospective study at a tertiary referral hospital. Patients who underwent KT from January 2012 to September 2014 were included. CMV infection was defined as the presence of CMV measured by polymerase chain reaction...
October 2015: Transplantation Proceedings
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