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https://www.readbyqxmd.com/read/27910187/ureteral-stent-duration-and-the-risk-of-bk-polyomavirus-viremia-or-bacteriuria-after-kidney-transplantation
#1
Jonathan T Wingate, Jared Brandenberger, Andrew Weiss, Lauren G Scovel, Christian S Kuhr
OBJECTIVES: Ureteral stents are used in kidney transplantation (KTX) to decrease post-operative complications, but are associated with BK polyomavirus viremia (BKV). Our primary outcome was to determine the association between ureteral stent duration and BKV. Secondary outcome measures were the association between bacteriuria and stent duration or use of ureteral stent strings. METHODS: Between January 2010 and January 2015, 403 patients underwent KTX at Virginia Mason Medical Center and met inclusion criteria...
December 2, 2016: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/27872831/outcomes-of-renal-transplant-recipients-with-bk-virus-infection-and-bk-virus-surveillance-in-the-auckland-region-from-2006-to-2012
#2
Chun-Yuan Hsiao, Helen L Pilmore, Lifeng Zhou, Janak R de Zoysa
AIM: To evaluate incidence, risk factors and treatment outcome of BK polyomavirus nephropathy (BKVN) in a cohort of renal transplant recipients in the Auckland region without a formal BK polyomavirus (BKV) surveillance programme. METHODS: A cohort of 226 patients who received their renal transplants from 2006 to 2012 was retrospectively reviewed. RESULTS: Seventy-six recipients (33.6%) had a BK viral load (BKVL) test and 9 patients (3.9%) developed BKVN...
November 6, 2016: World Journal of Nephrology
https://www.readbyqxmd.com/read/27854236/correlation-of-bk-virus-neutralizing-serostatus-with-the-incidence-of-bk-viremia-in-kidney-transplant-recipients
#3
Johanna R Abend, Marguerite Changala, Atul Sathe, Fergal Casey, Amy Kistler, Sindhu Chandran, Abigail Howard, David Wojciechowski
BACKGROUND: BK virus (BKV)-associated nephropathy is the second leading cause of graft loss in kidney transplant recipients. Due to the high prevalence of persistent infection with BKV in the general population, it is possible that either the transplant recipient or donor may act as the source of virus resulting in viruria and viremia. Although several studies suggest a correlation between donor-recipient serostatus and the development of BK viremia, specific risk factors for BKV-related complications in the transplant setting remain to be established...
June 1, 2016: Transplantation
https://www.readbyqxmd.com/read/27852673/progress-in-quantitative-viral-load-testing-variability-and-impact-of-the-who-quantitative-international-standards
#4
R T Hayden, Y Sun, L Tang, G W Procop, D R Hillyard, B A Pinsky, S A Young, A M Caliendo
It has been hoped that recent availability of WHO quantitative standards would improve inter-laboratory agreement for viral load testing; however, insufficient data are available to evaluate whether this has been the case. Results from 554 laboratories participating in proficiency testing surveys for quantitative CMV, EBV, BKV, ADV and HHV6 PCR testing were evaluated to determine result variability overall, and then stratified by assay manufacturer. The impact of calibration to IU/mL (CMV and EBV) on variability was also determined...
November 16, 2016: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27826043/the-interaction-between-human-papillomavirus-and-other-viruses
#5
REVIEW
J T Guidry, R S Scott
The etiological role of human papillomavirus (HPV) in anogenital tract and head and neck cancers is well established. However, only a low percentage of HPV-positive women develop cancer, indicating that HPV is necessary but not sufficient in carcinogenesis. Several biological and environmental cofactors have been implicated in the development of HPV-associated carcinoma that include immune status, hormonal changes, parity, dietary habits, tobacco usage, and co-infection with other sexually transmissible agents...
November 5, 2016: Virus Research
https://www.readbyqxmd.com/read/27799969/bk-viremia-among-iranian-renal-transplant-candidates
#6
Manizheh Jozpanahi, Amitis Ramezani, Shahrzad Ossareh, Mohammad Banifazl, Anahita Bavand, Setareh Mamishi, Arezoo Aghakhani
BACKGROUND: Primary infection with BK virus (BKV) is occurred during childhood and usually asymptomatic, but after initial infection, BKV may persist lifelong in the kidney and genitourinary tract. Reactivation may occur in individuals with compromised immunity such as renal transplant recipients. Due to the role of BKV in BK virus-associated nephropathy (BKVAN) and potentially renal allograft rejection, the detection of BKV in renal transplant candidates is very important. The aim of this study was to evaluate the frequency of BK viremia in end stage renal disease cases who were candidates for renal transplantation...
2016: Iranian Journal of Pathology
https://www.readbyqxmd.com/read/27762478/bk-polyomavirus-infection-in-pediatric-heart-transplant-recipients-a-prospective-study
#7
Allison Ducharme-Smith, Ben Z Katz, Amy E Bobrowski, Carl L Backer, Elfriede Pahl
BKV infection and nephropathy complicate pediatric HTx, but the incidence and time course of the disease are unknown. We assessed the incidence of BKV infection and its association with kidney dysfunction in pediatric HTx recipients. A single center prospective study compared pediatric (<18 years) HTx recipients, with and without BKV infection, who received an allograft between September 2013 and December 2014. Screening of urine for BKV was performed prior to transplant, and at week 1, and at months 3, 6, 9, 12, and 15 months post-transplantation...
October 20, 2016: Pediatric Transplantation
https://www.readbyqxmd.com/read/27755502/primary-human-renal-derived-tubular-epithelial-cells-fail-to-recognize-and-suppress-bk-virus-infection
#8
Hanneke de Kort, Kirstin M Heutinck, Jurjen M Ruben, Alessa E Valverde da Silva, Katja C Wolthers, Jörg Hamann, Ineke J M Ten Berge
BACKGROUND: BK polyomavirus (BKV)-associated nephropathy is a threat to kidney allograft survival affecting up to 15% of renal transplant patients. Previous studies revealed that tubular epithelial cells (TEC) show a limited response towards BKV infection. Here we investigated the interplay between BKV and TEC in more detail. In particular, we questioned whether BKV suppresses and/or evades antiviral responses. METHODS: Human primary tubular epithelial cells (TEC) and peripheral blood mononuclear cells were infected with BKV Dunlop strain or other viruses...
October 17, 2016: Transplantation
https://www.readbyqxmd.com/read/27742286/pilot-study-of-early-monitoring-using-urinary-screening-for-bk-polyomavirus-as-a-strategy-for-prevention-of-bkv-nephropathy-in-kidney-transplantation
#9
A L F Gouvêa, R I J Cosendey, F R Carvalho, R B Varella, C F de Souza, P F Lopes, A A Silva, M C Rochael, H P de Moraes, J R Lugon, J R Almeida
BACKGROUND: Urine monitoring programs represent an important strategy for early diagnosis of reactivation of BK polyomavirus (BKV) in kidney transplant recipients. This study analyzes a BKV urine screening model in kidney transplant patients. METHODS: Urinary screening for BKV reactivation was performed by urinary decoy cell and polymerase chain reaction (PCR) tests in samples from 32 consecutive kidney transplant patients, collected in a 6-month follow-up period...
September 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27705933/definition-and-characterization-of-novel-hla-a02-restricted-cd8-t-cell-epitopes-derived-from-jcv-polyomavirus-with-clinical-relevance
#10
Jiju Mani, Lei Wang, Angela G Hückelhoven, Anita Schmitt, Alma Gedvilaite, Nan Jin, Christian Kleist, Anthony D Ho, Michael Schmitt
Human JC and BK polyomaviruses (JCV/BKV) can establish a latent infection without any clinical symptoms in healthy individuals. In immunocompromised hosts infection or reactivation of JCV and BKV can cause lethal progressive multifocal leukoencephalopathy (PML) and hemorrhagic cystitis, respectively. Vaccination with JCV/BKV derived antigen epitope peptides or adoptive transfer of virus-specific T cells would constitute an elegant approach to clear virus-infected cells. Furthermore, donor leukocyte infusion (DLI) is another therapeutic approach which could be helpful for patients with JCV/BKV infections...
October 1, 2016: Oncotarget
https://www.readbyqxmd.com/read/27647675/an-unexpected-surge-in-plasma-bkpyv-viral-load-heralds-the-development-of-bkpyv-associated-metastatic-bladder-cancer-in-a-lung-transplant-recipient-with-bkpyv-nephropathy
#11
S Kuppachi, D Holanda, M Eberlein, B Alexiev, A J Tyler, M C Wissel, S B Kleiboeker, C P Thomas
We report a lung transplant recipient who developed BK polyoma virus (BKPyV) DNAemia and BKPyV nephropathy. With careful management of his immunosuppression he achieved significant reduction in BKPyV DNAemia and stabilization of his kidney function. He later developed a high-grade bladder cancer and shortly thereafter he experienced a major upsurge in the level of BKPyV DNAemia that coincided with the discovery of hepatic metastasis. Retrospectively, the bladder cancer and the hepatic secondary tumor stained uniformly for SV40 large T antigen, and the BKPyV DNA sequences identified in plasma corresponded to BKPyV DNA within hepatic tissue, indicating that the spike in BKPyV load was likely derived from the circulating tumor cells or cell-free tumor DNA following metastases of a BKV-associated cancer...
September 20, 2016: American Journal of Transplantation
https://www.readbyqxmd.com/read/27639176/incidence-of-bk-virus-infection-after-kidney-transplantation-is-independent-of-type-of-immunosuppressive-therapy
#12
Josephine Radtke, Nina Dietze, Lutz Fischer, Eike-Gert Achilles, Jun Li, Silke Scheidat, Friedrich Thaiss, Bjoern Nashan, Martina Koch
BACKGROUND: BK polyomavirus (BKV) infection and BKV nephropathy (BKVN) are risk factors for allograft function and survival. METHODS: We retrospectively analyzed BK viremia and BKVN in 348 patients who received a kidney transplantation donated after brain death (n=232) or living donation (n=116) between 2008 and 2013. A total of 266 patients were treated with standard immunosuppression consisting of basiliximab induction, calcineurin inhibitor (CNI), and mycophenolic acid (MPA, n=219) or everolimus (n=47); 82 patients received more intense immunosuppression with lymphocyte depletion, CNI and MPA (n=38) or everolimus (n=44)...
September 17, 2016: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/27633952/a-diverse-virome-in-kidney-transplant-patients-contains-multiple-viral-subtypes-with-distinct-polymorphisms
#13
Asha Rani, Ravi Ranjan, Halvor S McGee, Ahmed Metwally, Zahraa Hajjiri, Daniel C Brennan, Patricia W Finn, David L Perkins
Recent studies have established that the human urine contains a complex microbiome, including a virome about which little is known. Following immunosuppression in kidney transplant patients, BK polyomavirus (BKV) has been shown to induce nephropathy (BKVN), decreasing graft survival. In this study we investigated the urine virome profile of BKV+ and BKV- kidney transplant recipients. Virus-like particles were stained to confirm the presence of VLP in the urine samples. Metagenomic DNA was purified, and the virome profile was analyzed using metagenomic shotgun sequencing...
September 16, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27632373/serum-biomarkers-of-polyomavirus-infection-and-risk-of-lung-cancer-in-never-smokers
#14
Jyoti Malhotra, Tim Waterboer, Michael Pawlita, Angelika Michel, Qiuyin Cai, Wei Zheng, Yu-Tang Gao, Qing Lan, Nathaniel Rothman, Hilde Langseth, Tom K Grimsrud, Jian-Min Yuan, Woon-Puay Koh, Renwei Wang, Alan A Arslan, Anne Zeleniuch-Jacquotte, Paolo Boffetta
BACKGROUND: Lung cancer in never smokers is a significant contributor of cancer mortality worldwide. In this analysis, we explored the role of nine human polyomaviruses, including JC virus (JCV), BK virus (BKV) and Merkel cell virus (MCV), in lung cancer development in never smokers as there are data to support that polyomaviruses are potentially carcinogenic in the human lung. METHODS: We used multiplex serology to detect serum antibodies to polyomaviruses in a nested case-control design combining lung cancer cases and controls from four cohort studies - NYU Women's Health Study (NYU-WHS), Janus Serum Bank, Shanghai Women's Health Study and Singapore Chinese Health Study (SCHS)...
September 15, 2016: British Journal of Cancer
https://www.readbyqxmd.com/read/27623839/molecular-characterization-and-genetic-diversity-of-bovine-kobuvirus-brazil
#15
Marcelo Candido, Maria Cryskely Agra Batinga, Anna Luiza Farias Alencar, Sabrina Ribeiro de Almeida-Queiroz, Maria da Glória Buzinaro, Márcia Cristina Livonesi, Andrezza Maria Fernandes, Ricardo Luiz Moro de Sousa
It is suggested that Bovine kobuvirus (BKV) is involved in the etiology of gastroenteric diseases especially among calves; however, this association remains unknown. This study evaluated 216 fecal samples from cattle with and without diarrhea symptoms obtained from different regions of Brazil. A 216 bp fragment of the BKV 3D gene was amplified by RT-PCR in 14.4 % (31/216) of the studied samples, and 17 samples were subjected to nucleotide sequencing. All positive samples were obtained from animals aged less than 5 months, and most of animals presented diarrhea (p < 0...
September 13, 2016: Virus Genes
https://www.readbyqxmd.com/read/27607028/neue-entwicklungen-in-der-berufsdermatologie
#16
Thomas L Diepgen
Berufsbedingte Hautkrankheiten nach BK-Nr. 5101 stehen in Deutschland seit vielen Jahren an der Spitze der angezeigten Berufskrankheiten. Durch die Optimierung von Maßnahmen der primären, sekundären und tertiären Prävention können heutzutage die meisten Betroffenen im Beruf verbleiben. Zum 01.01.2015 wurde die Berufskrankheitenverordnung (BKV) novelliert und es wurde die BK-Nr. 5103 "Plattenepithelkarzinome oder multiple aktinische Keratosen der Haut durch natürliche UV-Strahlung" als neue Berufskrankheit in die BK-Liste der BKV aufgenommen...
September 2016: Journal der Deutschen Dermatologischen Gesellschaft, Journal of the German Society of Dermatology: JDDG
https://www.readbyqxmd.com/read/27607027/new-developments-in-occupational-dermatology
#17
Thomas L Diepgen
Occupational skin diseases according to BK No. 5101 - "severe or recurrent skin diseases which have forced the person to discontinue all occupational activities that caused or could cause the development, worsening, or recurrence of the disease" - is the most commonly reported notifiable occupational diseases in Germany. Following the optimization of measures of primary, secondary, and tertiary prevention, today most individuals affected are able to continue their profession. With the revision of the German ordinance on occupational diseases (BKV) in January 2015, skin cancer caused by UV irradiation was added to the list of occupational diseases...
September 2016: Journal der Deutschen Dermatologischen Gesellschaft, Journal of the German Society of Dermatology: JDDG
https://www.readbyqxmd.com/read/27578847/primary-polyomavirus-infection-not-reactivation-as-the-cause-of-trichodysplasia-spinulosa-in-immunocompromised-patients
#18
Els van der Meijden, Barbara Horváth, Marcel Nijland, Karin de Vries, Emoőke Rácz, Gilles F Diercks, Annelies E de Weerd, Marian C Clahsen-van Groningen, Caroline S van der Blij-de Brouwer, Arnulfo J van der Zon, Aloys C M Kroes, Klaus Hedman, Jeroen J A van Kampen, Annelies Riezebos-Brilman, Mariet C W Feltkamp
Classic human polyomaviruses (JC and BK viruses) become pathogenic when reactivating from latency. For the rare skin disease trichodysplasia spinulosa, we show that manifestations of the causative polyomavirus (TSPyV) occur during primary infection of the immunosuppressed host. High TSPyV loads in blood and cerebrospinal fluid, sometimes coinciding with cerebral lesions and neuroendocrine symptoms, marked the acute phase of trichodysplasia spinulosa, whereas initiation and maturation of TSPyV seroresponses occurred in the convalescent phase...
August 30, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27573493/influence-of-tacrolimus-metabolism-rate-on-bkv-infection-after-kidney-transplantation
#19
Gerold Thölking, Christina Schmidt, Raphael Koch, Katharina Schuette-Nuetgen, Dirk Pabst, Heiner Wolters, Iyad Kabar, Anna Hüsing, Hermann Pavenstädt, Stefan Reuter, Barbara Suwelack
Immunosuppression is the major risk factor for BK virus nephropathy (BKVN) after renal transplantation (RTx). As the individual tacrolimus (Tac) metabolism rate correlates with Tac side effects, we hypothesized that Tac metabolism might also influence the BKV infection risk. In this case-control study RTx patients with BK viremia within 4 years after RTx (BKV group) were compared with a BKV negative control group. The Tac metabolism rate expressed as the blood concentration normalized by the daily dose (C/D ratio) was applied to assess the Tac metabolism rate...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27532453/1-25-dihydroxyvitamin-d-circulating-levels-calcitriol-administration-and-incidence-of-acute-rejection-cmv-infection-and-polyoma-virus-infection-in-renal-transplant-recipients
#20
Luciano Moscarelli, Giulia Antognoli, Elisa Buti, Egrina Dervishi, Filippo Fani, Leonardo Caroti, Aris Tsalouchos, Elena Romoli, Giulia Ghiandai, Enrico Minetti
Observation that 1,25-Dihydroxyvitamin-D3 has an immunomodulatory effect on innate and adaptive immunity raises the possible effect on clinical graft outcome. Aim of this study was to evaluate the correlation of biopsy-proven acute rejection, CMV infection, BKV infection, with 1,25-Dihydroxyvitamin-D3 deficiency and the benefit of calcitriol supplementation before and during the transplantation. Risk factors and kidney graft function were also evaluated. All RTRs received induction therapy with basiliximab, cyclosporine, mycophenolic acid, and steroids...
October 2016: Clinical Transplantation
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