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cytomegalovirus and kidney

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https://www.readbyqxmd.com/read/27913630/adaptive-nkg2c-nk-cell-response-and-the-risk-of-cytomegalovirus-infection-in-kidney-transplant-recipients
#1
Dolores Redondo-Pachón, Marta Crespo, Jose Yélamos, Aura Muntasell, María José Pérez-Sáez, Silvia Pérez-Fernández, Joan Vila, Carlos Vilches, Julio Pascual, Miguel López-Botet
CMV infection in kidney transplant recipients (KTRs) has been associated with an increased risk for graft loss and reduced host survival. CMV promotes persistent expansions of NK cells expressing the CD94/NKG2C receptor. The NKG2C (KLRC2) gene is frequently deleted, and copy number influences the adaptive response of NKG2C(+) NK cells. The distribution of NKG2C(+) NK cells and NKG2C genotypes (NKG2C(+/+), NKG2C(+/del), NKG2C(del/del)) were studied in cross-sectional (n = 253) and prospective (n = 122) KTR cohorts...
December 2, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27888673/clinical-correlates-of-pp65-antigenemia-monitoring-in-the-first-months-of-post-kidney-transplant-in-patients-undergoing-universal-prophylaxis-or-preemptive-therapy
#2
Fabiana Rabe Carvalho, Rachel Ingrid Juliboni Cosendey, Cintia Fernandes Souza, Thalia Medeiros, Paulo Alexandre Menezes, Andrea Alice Silva, Jorge Reis Almeida, Jocemir Ronaldo Lugon
INTRODUCTION: Human cytomegalovirus (HCMV) is a major cause of morbidity in kidney transplant patients. OBJECTIVES: We aimed to study viral replication and serological response in the first months post kidney transplant in patients undergoing universal prophylaxis or preemptive therapy and correlate the findings with the clinical course of HCMV infection. PATIENTS AND METHODS: Independent from the clinical strategy adopted for managing HCMV infection, prophylaxis versus preemptive therapy, the pp65 antigenemia assay and serological response were assessed on the day of transplantation, and then weekly during the first three months of post-transplant...
November 23, 2016: Brazilian Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27872061/phase-2-randomized-double-blind-placebo-controlled-trial-of-rg7667-a-combination-monoclonal-antibody-for-prevention-of-cytomegalovirus-infection-in-high-risk-kidney-transplant-recipients
#3
Julie H Ishida, Anita Patel, Aneesh K Mehta, Philippe Gatault, Jacqueline M McBride, Tracy Burgess, Michael A Derby, David R Snydman, Brinda Emu, Becket Feierbach, Ashley E Fouts, Mauricio Maia, Rong Deng, Carrie M Rosenberger, Lynn A Gennaro, Natalee S Striano, X Charlene Liao, Jorge A Tavel
BACKGROUND: Cytomegalovirus (CMV) infection is a significant complication after kidney transplantation. We examined the ability of RG7667, a combination of two monoclonal antibodies, to prevent CMV infection in high-risk kidney transplant recipients in a randomized, double-blind, placebo-controlled trial. METHODS: CMV-seronegative recipients of a kidney transplant from a CMV-seropositive donor (D+R-) were randomized to receive RG7667 (n=60) or placebo (n=60) at the time of transplant, and 1, 4, and 8 weeks posttransplant...
November 21, 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27860123/cytomegalovirus-and-cancer-after-kidney-transplantation-role-of-the-human-leukocyte-antigen-system
#4
Germaine Wong, Aron Chakera, Jeremy R Chapman, Steve C Chadban, Helen Pilmore, Jonathan C Craig, Wai H Lim
BACKGROUND: The role of cytomegalovirus (CMV) in cancer development after transplantation remains uncertain. We aimed to determine the association between donor and recipient CMV serological status and the risk of cancer development after kidney transplantation. METHODS: Using data from the Australian and New Zealand Dialysis and Transplant (ANZDATA) Registry, we assessed the association between CMV donor/recipient (D/R) serological status and the risk of solid organ cancers in primary adult deceased-donor kidney transplant patients between 1990 and 2012...
November 12, 2016: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/27858871/case-report-brincidofovir-induced-reversible-severe-acute-kidney-injury-in-2-solid-organ-transplant-for-treatment-of-cytomegalovirus-infection
#5
Emmanuel Faure, Tatiana Galperine, Olivier Cannesson, Sophie Alain, Viviane Gnemmi, Celine Goeminne, Annie Dewilde, Johana Béné, Mohamed Lasri, Célia Lessore de Sainte Foy, Arnaud Lionet
RATIONALE: Resistant cytomegalovirus-mediated infections are increasing in solid organ recipient with few available alternative treatments. Brincidofovir is an oral broad-spectrum antiviral in development for prevention and treatment of viral infection, particularly cytomegalovirus. PATIENTS CONCERNS: Although brincidofovir is an analogue of cidofovir, previous studies reported no renal toxicity. DIAGNOSES: Here, we report 2 cases of severe tubular necrosis in solid organ recipients, 1 heart and 1 kidney transplant...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27849440/use-of-cidofovir-for-cytomegalovirus-disease-refractory-to-ganciclovir-in-solid-organ-recipients
#6
Hugo Bonatti, Costi D Sifri, Clara Larcher, Stefan Schneeberger, Camille Kotton, Christian Geltner
BACKGROUND: Solid organ transplantation (SOT) frequently is complicated by cytomegalovirus (CMV) infections. Cidofovir (CDV) is active against CMV, including many ganciclovir (GCV)-resistant mutants, but often is considered to be too nephrotoxic for use after organ transplantation. PATIENTS AND METHODS: Seven males and two females (median age 50.1 years), including two kidney/pancreas, four lung, one small bowel, and two hand recipients, received CDV for refractory CMV disease...
November 16, 2016: Surgical Infections
https://www.readbyqxmd.com/read/27846155/effect-of-ex-vivo-expanded-recipient-regulatory-t-cells-on-hematopoietic-chimerism-and-kidney-allograft-tolerance-across-mhc-barriers-in-cynomolgus-macaques
#7
Raimon Duran-Struuck, Hugo P Sondermeijer, Leo Bühler, Paula Alonso-Guallart, Jonah Zitsman, Yojiro Kato, Anette Wu, Alicia N McMurchy, David Woodland, Adam Griesemer, Mercedes Martinez, Svetlan Boskovic, Tatsuo Kawai, A Benedict Cosimi, Cheng-Shie Wuu, Andrea Slate, Markus Mapara, Sam Baker, Rafal Tokarz, Vivette Dʼ Agati, Scott Hammer, Marcus Pereira, W Ian Lipkin, Thomas Wekerle, Megan Levings, Megan Sykes
BACKGROUND: Infusion of recipient regulatory T cells (Treg) promotes durable mixed hematopoietic chimerism and allograft tolerance in mice receiving allogeneic BMT with minimal conditioning. We applied this strategy in a Cynomolgus macaque model. METHODS: CD4+CD25high Treg that were polyclonally expanded in culture were highly suppressive in vitro and maintained high expression of FoxP3. Eight monkeys underwent nonmyeloablative conditioning and MHC-mismatched BMT with or without Treg infusion...
November 15, 2016: Transplantation
https://www.readbyqxmd.com/read/27832434/monitoring-of-venus-transgenic-cell-migration-during-pregnancy-in-non-transgenic-rabbits
#8
N Lipták, O I Hoffmann, A Kerekes, G Iski, D Ernszt, K Kvell, L Hiripi, Z Bősze
Cell transfer between mother and fetus were demonstrated previously in several species which possess haemochorial placenta (e.g. in humans, mice, rats, etc.). Here we report the assessment of fetal and maternal microchimerism in non-transgenic (non-TG) New Zealand white rabbits which were pregnant with transgenic (TG) fetuses and in non-TG newborns of TG does. The TG construct, including the Venus fluorophore cDNA driven by a ubiquitous cytomegalovirus enhancer, chicken ß-actin promoter (CAGGS), was previously integrated into the rabbit genome by Sleeping Beauty transposon system...
November 10, 2016: Transgenic Research
https://www.readbyqxmd.com/read/27830183/human-cytomegalovirus-infection-enhances-nk-cell-activity-in-vitro
#9
Astrid Tschan-Plessl, Martin Stern, Laurent Schmied, Christelle Retière, Hans H Hirsch, Christian Garzoni, Christian van Delden, Katia Boggian, Nicolas J Mueller, Christoph Berger, Jean Villard, Oriol Manuel, Pascal Meylan, Grzegorz Terszowski
BACKGROUND: Occurring frequently after solid organ and hematopoietic stem cell transplantation, cytomegalovirus (CMV) replication remains a relevant cause of mortality and morbidity in affected patients. Despite these adverse effects, an increased alloreactivity of natural killer (NK) cells after CMV infection has been assumed, but the underlying physiopathological mechanisms have remained elusive. METHODS: We used serial analyses of NK cells before and after CMV infection in kidney transplant recipients as an in vivo model for CMV primary infection to explore the imprint of CMV infection using every patient as their own control: We analyzed NK cell phenotype and function in 47 CMV seronegative recipients of CMV seropositive kidney grafts, who developed CMV primary infection posttransplant...
July 2016: Transplantation Direct
https://www.readbyqxmd.com/read/27800130/the-association-between-viral-infections-and-co-stimulatory-gene-polymorphisms-in-kidney-transplant-outcomes
#10
Ahmad Niknam, Mohammad Hossein Karimi, Ramin Yaghobi, Bita Geramizadeh, Jamshid Roozbeh, Mehdi Salehipour, Mahdiyar Iravani
BACKGROUND: The surveillance of kidney transplant patients depends on function of different immunologic markers like co-stimulatory molecules. These molecules may also be associated with post kidney transplant viral related outcomes. OBJECTIVES: The aim of this study was to investigate the possible associations between co-stimulatory molecule gene polymorphisms and viral infections in kidney transplant patients. PATIENTS AND METHODS: In total, 172 kidney transplant patients were included in this study...
August 2016: Jundishapur Journal of Microbiology
https://www.readbyqxmd.com/read/27793122/acute-pancreatitis-associated-with-everolimus-after-kidney-transplantation-a-case-report
#11
Francesco Fontana, Gianni Cappelli
BACKGROUND: Acute pancreatitis (AP) following KT is a rare and often fatal complication of the early post-transplant period. Common causative factors for AP are rare after KT; anti-rejection drugs as CyA, prednisone and MMF have been implicated, although evidence is not strong and we found no reports on possible causative role for mTOR inhibitors. CASE PRESENTATION: A 55-year-old Caucasian man with end-stage renal disease due to idiopathic membrano-prolipherative glomerulonephritis underwent single kidney transplantation (KT) from cadaveric donor...
October 28, 2016: BMC Nephrology
https://www.readbyqxmd.com/read/27788803/incidence-and-risk-factors-for-cytomegalovirus-infection-in-patients-with-kidney-transplantation-a-single-center-experience
#12
S Feng, J Yang, W Wang, X Hu, H Liu, X Qian, D Feng, X Zhang
BACKGROUND: Cytomegalovirus (CMV) infection is deemed to be a major cause of morbidity and mortality in patients after kidney transplantation. The purpose of this study was to analyze the incidence of CMV infection and risk factors for CMV infection in our center, to help in determination of its impact on the kidney function in this patient population, and to provide new ideas for the prevention and treatment of CMV infection. METHODS: A total of 319 kidney transplant recipients from our center were studied between January 2000 and December 2015...
October 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27781316/stillbirth-and-intrauterine-fetal-death-role-of-routine-histological-organ-sampling-to-determine-cause-of-death
#13
J Man, J C Hutchinson, M Ashworth, L Judge-Kronis, S Levine, N J Sebire
OBJECTIVES: Guidelines for the investigation of intrauterine death and sudden unexpected death in infancy (SUDI) recommend, based on expert opinion, autopsy procedures and tissue sampling strategies for histological analysis. Although stillbirth is much more common than SUDI, there have been no large-scale studies published which evaluate the usefulness of histological evaluation of specific organs in stillbirth for determining cause of death. Our aim was to evaluate the use of macroscopic and microscopic assessment of internal organs to determine cause of intrauterine death...
October 25, 2016: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27772620/cytomegalovirus-and-other-%C3%AE-herpesviruses
#14
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/27761671/preemptive-kidney-transplantation-a-propensity-score-matched-cohort-study
#15
Masayoshi Okumi, Yasuyuki Sato, Kohei Unagami, Toshihito Hirai, Hideki Ishida, Kazunari Tanabe
BACKGROUND: The reasons for improved outcomes associated with preemptive kidney transplantation (PKT) are incompletely understood, and post-transplant complications have been scarcely investigated. METHODS: We evaluated the outcomes of PKT in both unmatched (n = 1060) and propensity score matched cohorts (n = 186) of adults who underwent living kidney transplant between 2000 and 2014. Outcomes were estimated glomerular filtration rate (eGFR), biopsy-proven rejection, cytomegalovirus (CMV) infection, post-transplant diabetes mellitus (PTDM), cardiovascular disease (CVD), graft failure (non-censored for death), and malignancy...
October 19, 2016: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/27755502/primary-human-renal-derived-tubular-epithelial-cells-fail-to-recognize-and-suppress-bk-virus-infection
#16
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/27753183/tolerability-of-up-to-200%C3%A2-days-of-prophylaxis-with-valganciclovir-oral-solution-and-or-film-coated-tablets-in-pediatric-kidney-transplant-recipients-at-risk-of-cytomegalovirus-disease
#17
G Varela-Fascinetto, C Benchimol, R Reyes-Acevedo, M Genevray, D Bradley, J Ives, H T Silva
This multicenter, open-label study evaluated the tolerability of extended prophylaxis with valganciclovir in pediatric kidney transplant recipients at risk of CMV disease. Fifty-six patients aged 4 months to 16 years received once-daily valganciclovir oral solution and/or tablets, dosed by BSA and renal function, for up to 200 days. The most common AEs on treatment were upper respiratory tract infection (33.9%), urinary tract infection (33.9%), diarrhea (32.1%), leukopenia (25.0%), neutropenia (23.2%), and headache (21...
October 17, 2016: Pediatric Transplantation
https://www.readbyqxmd.com/read/27751774/polymorphism-in-programmed-cell-death-1-gene-is-strongly-associated-with-lung-and-kidney-allograft-survival-in-recipients-from-cmv-positive-donors
#18
Catherine Forconi, Philippe Gatault, Elodie Miquelestorena-Standley, Johan Noble, Sally Al-Hajj, Romain Guillemain, Marc Stern, Thomas Hoffmann, Louis Prat, Caroline Suberbielle, Emeline Masson, Anne Cesbron-Gautier, Catherine Gaudy-Graffin, Alain Goudeau, Gilles Thibault, Fabrice Ivanes, Roseline Guibon, Ihab Kazma, Yvon Lebranchu, Matthias Büchler, Antoine Magnan, Jean-Michel Halimi, Christophe Baron
BACKGROUND: Cytomegalovirus (CMV) has a role in chronic rejection and graft loss in kidney transplant (KTx) and lung transplant (LTx) recipients. In addition, donor CMV seropositivity is an independent risk factor for renal graft loss. The anti-CMV response might modulate this risk. Expression of programmed cell death 1 (PD-1), a receptor involved in viral-specific T-cell exhaustion, is influenced by a single nucleotide polymorphism called PD-1.3 (wild-type allele G, variant allele A)...
August 26, 2016: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/27742281/cryptococcosis-in-renal-transplant-recipients-a-single-center-experience
#19
S Marques, R Carmo, I Ferreira, M Bustorff, S Sampaio, M Pestana
BACKGROUND: In solid organ transplant patients, 8% of invasive fungal infections are attributed to Cryptococcus. The aim of this study was to determine the frequency, risk factors, clinical characteristics, and outcome of kidney transplant recipients (TR) infected with Cryptococcus. CASE SERIES: Between 2007 and 2014, a total of 500 kidney transplantations were performed at São João Hospital, in Porto, Portugal. Six infections by C. neoformans were reported, an incidence of 1...
September 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27733107/a-prospective-randomized-comparative-trial-of-high-dose-mizoribine-versus-mycophenolate-mofetil-in-combination-with-tacrolimus-and-basiliximab-for-living-donor-renal-transplant-a-multicenter-trial
#20
Hideki Ishida, Shiro Takahara, Noritoshi Amada, Shinji Tomikawa, Tatsuya Chikaraishi, Kota Takahashi, Kazuhiro Uchida, Takahiro Akiyama, Kazunari Tanabe, Hiroshi Toma
OBJECTIVES: Our objectives were to compare the clinical outcomes of mizoribine (12 mg/kg/d) and mycophenolate mofetil (2000 mg/d) in combination with tacrolimus, basiliximab, and corticosteroids. MATERIALS AND METHODS: We enrolled 83 recipients of living-donor renal transplant (performed between 2008 and 2013) in this study. This prospective multi-institutional randomized comparative study compared mizoribine (n = 41) and mycophenolate mofetil (n = 42) in combination with tacrolimus, basiliximab, and corticosteroids for living-donor renal transplant recipients...
October 2016: Experimental and Clinical Transplantation
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