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https://www.readbyqxmd.com/read/28923647/is-cytomegalovirus-surveillance-necessary-for-patients-with-low-reactivation-risk-in-an-autologous-hematopoietic-cell-transplantation-setting
#1
A H Kaya, E Tekgunduz, S Akpinar, H Batgi, F Bekdemir, O Kayikci, S Namdaroglu, B U Ulu, M S Dal, M K Cakar, S Korkmaz, F Altuntas
BACKGROUND: In an autologous hematopoietic cell transplantation (AHCT) setting, routine cytomegalovirus (CMV) surveillance is not indicated except in high-risk situations. On the other hand, some studies reported increased CMV reactivation in AHCT setting as a result of incorporation of novel agents into treatment algorithms, such as bortezomib and rituximab. We retrospectively analyzed CMV reactivation and infection rates in patients with no high-risk features, who were treated with AHCT...
October 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28914852/-efficiency-of-immunosuppressive-therapy-in-virus-negative-and-virus-positive-patients-with-morphologically-verified-lymphocytic-myocarditis
#2
O V Blagova, A V Nedostup, E A Kogan, V A Sulimov
AIM: To evaluate the efficiency of immunosuppressive therapy (IST) in virus-negative (V-) and virus-positive (V+) patients with lymphocytic myocarditis (LM). SUBJECTS AND METHODS: 60 patients (45 males) (mean age 46.7±11.8 years) with dilated cardiomyopathy (mean left ventricular (LV) end diastolic size (EDS) 6.7±0.7 cm; ejection fraction (EF) 26.2±9.1%) were examined. The diagnosis of active/borderline LM was verified by right ventricular endomyocardial biopsy in 38 patients, by intraoperative LV biopsy in 10, in the study of explanted hearts from 3 patients and at autopsy in 9...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/28904689/severe-neonatal-cytomegalovirus-infection-about-a-case
#3
Brahim El Hasbaoui, Amal Bousselamti, Mohammed Amine Redouani, Amina Barkat
Maternofoetal infection with Cytomegalovirus (CMV) is the most common congenital infection and a leading cause of mental retardation and sensori-neural hearing loss. Population-based studies indicate that at least 0.5% of all infants born alive have CMV of whom approximately 10% have clinically evident symptomsat birth. The Justification of systematic screening for foetal CMV infection is still controversial and is not recommended in most developed countries. This is mainly justified by the paucity of antenatal prognostic factors and the lack of established intrauterine treatment when foetal infection has been diagnosed...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28888855/cytomegalovirus-associated-severe-pneumonia-multi-organ-failure-and-ganciclovir-associated-arrhythmia-in-immunocompetent-child
#4
Ayman A Al-Eyadhy, Gamal Hasan, Rolan Bassrawi, Muneera Al-Jelaify, Mohamad-Hani Temsah, Ali Alhaboob, Fahad Al-Sohime, Majed Alabdulhafid
Cytomegalovirus (CMV) can rarely cause severe manifestations in immunocompetent individuals. Hereby, we report a twelve-year-old boy who presented with tachycardia, tachypnea, fever and leukocytosis, which progressed to hypoxemic respiratory failure and severe acute respiratory distress syndrome (ARDS). Subsequently, he developed multi-organ failure despite the ongoing full supportive care and empiric broad spectrum antibiotics. Cytomegalovirus infection was diagnosed by Polymerase Chain Reaction (PCR) in blood and histopathological examination of lung biopsy...
September 6, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28881059/pancreas-preserving-duodenectomy-after-living-donor-liver-transplantation-for-invasive-cytomegalovirus-disease
#5
Rodrigo Vincenzi, Eduardo A Fonseca, Paulo Chapchap, Marcel C C Machado, Karina M O Roda, Helry L Candido, Marcel R Benavides, Marco A D'Assuncao, Rogerio C Afonso, Plinio Turine, Fernando P Marson, João Seda Neto
CMV infection plays an important role in the postoperative course following solid organ transplantation. We present the case of an 11-year-old male patient who underwent LDLT due to severe hepatopulmonary syndrome and biliary cirrhosis. Four weeks after LDLT, he developed persistent GI bleeding and was subjected to repeated endoscopic treatment and radiological arterial embolization to stop the bleeding from duodenal ulcers. Diagnostic workup was negative for CMV disease. Because the bleeding persisted, surgical treatment was indicated, and a pancreas-preserving duodenectomy was performed...
September 7, 2017: Pediatric Transplantation
https://www.readbyqxmd.com/read/28879093/refractory-acute-respiratory-failure-due-to-pneumocystis-jiroveci-pcp-and-cytomegalovirus-cmv-pneumonitis-a-case-report-and-review-of-literature
#6
Kairav Shah, Kartikeya Cherabuddi, Stacy G Beal, Gautam Kalyatanda
BACKGROUND: Opportunistic infections with Pneumocystis jiroveci pneumonia (PCP) are common in patients with HIV (human immunodeficiency virus) and are encountered once the CD4 count decreases below 200 cells/mm3. Cytomegalovirus (CMV) tends to cause disease once the CD4 count drops below 50 cells/mm3. CMV pneumonitis is not common in this population. However, detecting its presence in broncho-alveolar lavage (BAL) fluid has been associated with increased morbidity and mortality. The role of antiviral therapy against CMV remains unclear...
2017: IDCases
https://www.readbyqxmd.com/read/28862190/seroprevalence-of-cytomegalovirus-in-donors-opportunistic-viral-infections-in-liver-transplant-recipients
#7
Joy Varghese, S Subramanian, Mettu Srinivas Reddy, Naresh Shanmugam, G Balajee, Vijaya Srinivasan, Jayanthi Venkataraman, Rela Mohamed
BACKGROUND & OBJECTIVES: Opportunistic virus infections are common in liver transplant (LT) recipients. There is a risk of developing infection with cytomegalovirus (CMV) and herpes-related viruses such as herpes simplex virus-1 and 2 (HSV-1 & 2), Epstein-Barr virus (EBV) and Varicella Zoster virus (VZV), reactivation of infection and recurrent infection. This study was conducted to determine CMV seropositivity in donors and its influence on LT recipients and seropositivity of CMV, HSV-1 and 2, EB viral capsid antigen (EBVCA) and VZV in LT recipients and their reactivation...
April 2017: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/28855574/genetic-studies-in-mice-directly-link-oocytes-produced-during-adulthood-to-ovarian-function-and-natural-fertility
#8
Ning Wang, Chonthicha Satirapod, Yasuyo Ohguchi, Eun-Sil Park, Dori C Woods, Jonathan L Tilly
Multiple labs have reported that mammalian ovaries contain oogonial stem cells (OSCs), which can differentiate into oocytes that fertilize to produce offspring. However, the physiological relevance of these observations to adult ovarian function is unknown. Here we performed targeted and reversible ablation of premeiotic germ cells undergoing differentiation into oocytes in transgenic mice expressing the suicide gene, herpes simplex virus thymidine kinase (HSVtk), driven by the promoter of stimulated by retinoic acid gene 8 (Stra8), a germ cell-specific gene activated during meiotic commitment...
August 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28853217/cytolytic-virus-activation-therapy-and-treatment-monitoring-for-epstein-barr-virus-associated-nasopharyngeal-carcinoma-in-a-mouse-tumor-model
#9
Zlata Novalić, Sandra A W M Verkuijlen, Mariska Verlaan, Jos L H Eersels, Inge de Greeuw, Carla F M Molthoff, Jaap M Middeldorp, Astrid E Greijer
Undifferentiated nasopharyngeal carcinoma (NPC) is 100% associated with Epstein-Barr virus (EBV). Expression of viral proteins in the tumor cells is highly restricted. EBV reactivation by CytoLytic Virus Activation (CLVA) therapy triggers de novo expression of early viral kinases (PK and TK) and uses antiviral treatment to kill activated cells. The mechanism of tumor elimination by CLVA was analyzed in NPC mouse model using C666.1 cells. Valproic acid (VPA) was combined with gemcitabine (GCb) to stimulate EBV reactivation, followed by antiviral treatment with ganciclovir (GCV)...
August 29, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28844151/high-dose-acyclovir-for-cytomegalovirus-prophylaxis-in-seropositive-abdominal-transplant-recipients
#10
Margaret R Jorgenson, Jillian L Descourouez, Glen E Leverson, Erin K McCreary, Michael R Lucey, Jeannina A Smith, Robert R Redfield
BACKGROUND: Following abdominal solid organ transplant (aSOT), valganciclovir (VGC) is recommended for cytomegalovirus (CMV) prophylaxis. This agent is associated with efficacy concerns, toxicity, and emergence of ganciclovir resistance. OBJECTIVE: To evaluate the incidence of high-dose acyclovir (HD-A) prophylaxis failure in seropositive aSOT recipients (R+). METHODS: This was a retrospective, single-center study of R+ transplanted without lymphocyte-depleting induction between January 1, 2000, and June 30, 2013, discharged with 3 months of HD-A prophylaxis (800 mg 4 times daily)...
August 1, 2017: Annals of Pharmacotherapy
https://www.readbyqxmd.com/read/28838440/ganciclovir-dosing-strategies-and-development-of-cytomegalovirus-resistance-in-a-kidney-transplant-recipient-a-case-report
#11
I A Echenique, D Beltran, L Ramirez-Ruiz, N Najafian, N Agrawal
In renal transplant recipients, delayed graft function and accompanying renal impairment may lead to therapeutic underexposure of valganciclovir. We describe a case of a cytomegalovirus (CMV)-seronegative kidney transplant recipient from a CMV-seropositive donor, whose course was complicated during valganciclovir prophylaxis by CMV disease, ultimately progressing to ganciclovir, foscarnet, and cidofovir resistance. Assessments and adjustments for renal dysfunction, according to both Cockgroft-Gault and Modification of Diet in Renal Disease study equations, are described...
September 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28830465/emerging-val-ganciclovir-resistance-during-treatment-of-congenital-cmv-infection-a-case-report-and-review-of-the-literature
#12
Beatriz Morillo-Gutierrez, Sheila Waugh, Ailsa Pickering, Terence Flood, Marieke Emonts
BACKGROUND: Congenital cytomegalovirus (cCMV) infection is an important illness that is a common cause of hearing loss in newborn infants and a major cause of disability in children. For that reason, treatment of symptomatic patients with either ganciclovir or its pro-drug valganciclovir is recommended. Treatment duration of 6 months has been shown to be more beneficial than shorter courses; however, there is uncertainty regarding emergence of resistance strains, secondary effects and long term sequelae...
August 22, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28829877/effect-of-ganciclovir-on-il-6-levels-among-cytomegalovirus-seropositive-adults-with-critical-illness-a-randomized-clinical-trial
#13
RANDOMIZED CONTROLLED TRIAL
Ajit P Limaye, Renee D Stapleton, Lili Peng, Scott R Gunn, Louise E Kimball, Robert Hyzy, Matthew C Exline, D Clark Files, Peter E Morris, Stephen K Frankel, Mark E Mikkelsen, Duncan Hite, Kyle B Enfield, Jay Steingrub, James O'Brien, Polly E Parsons, Joseph Cuschieri, Richard G Wunderink, David L Hotchkin, Ying Q Chen, Gordon D Rubenfeld, Michael Boeckh
Importance: The role of cytomegalovirus (CMV) reactivation in mediating adverse clinical outcomes in nonimmunosuppressed adults with critical illness is unknown. Objective: To determine whether ganciclovir prophylaxis reduces plasma interleukin 6 (IL-6) levels in CMV-seropositive adults who are critically ill. Design, Setting, and Participants: Double-blind, placebo-controlled, randomized clinical trial (conducted March 10, 2011-April 29, 2016) with a follow-up of 180 days (November 10, 2016) that included 160 CMV-seropositive adults with either sepsis or trauma and respiratory failure at 14 university intensive care units (ICUs) across the United States...
August 22, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28822107/successful-treatment-and-fdg-pet-ct-monitoring-of-hhv-6-encephalitis-in-a-non-neutropenic-patient-case-report-and-literature-review
#14
Elda Righi, Alessia Carnelutti, Daniele Muser, Francesco Zaja, Elisa Lucchini, Federico Pea, Fernando Di Gregorio, Abass Alavi, Matteo Bassetti
Human herpesvirus (HHV)-6 reactivation is associated with severe forms of encephalitis among patients undergoing hematopoietic stem cell transplantation. Cases in non-neutropenic patients are uncommon. The efficacy of ganciclovir and other compounds that are used for the treatment of HHV-6 encephalitis remains suboptimal and linked to toxicity. Valganciclovir, the oral prodrug of ganciclovir, could be practical to treat outpatients, but it is not commonly used for severe cases. We report a case of HHV-6 encephalitis in a non-neutropenic patient successfully treated with valganciclovir and undergoing therapeutic drug monitoring in plasma and in the cerebrospinal fluid...
August 18, 2017: Journal of Neurovirology
https://www.readbyqxmd.com/read/28807919/drug-susceptibility-and-replicative-capacity-of-multi-drug-resistant-recombinant-human-cytomegalovirus-harboring-mutations-in-ul56-and-ul54-genes
#15
Jocelyne Piret, Nathalie Goyette, Guy Boivin
Letermovir is an investigational antiviral agent with a novel mechanism of action involving the viral terminase (pUL56). We evaluated the impact of V236M mutation in UL56 gene alone and combined with E756K mutation in UL54 gene on drug susceptibility and viral replicative capacity of recombinant human cytomegalovirus. The double mutant exhibited at least borderline resistance to all antivirals tested (ganciclovir, foscarnet, cidofovir, brincidofovir and letermovir) and replicated less efficiently than the wild-type virus in vitro...
August 14, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28783148/clinical-characteristics-and-outcome-of-human-herpesvirus-6-encephalitis-after-allogeneic-hematopoietic-stem-cell-transplantation
#16
M Ogata, K Oshima, T Ikebe, K Takano, H Kanamori, T Kondo, Y Ueda, T Mori, H Hashimoto, H Ogawa, T Eto, T Ueki, T Miyamoto, T Ichinohe, Y Atsuta, T Fukuda
In this retrospective analysis using the Transplant Registry Unified Management Program, we identified 145 patients with human herpesvirus (HHV)-6 encephalitis among 6593 recipients. The cumulative incidences of HHV-6 encephalitis at 100 days after transplantation in all patients, recipients of bone marrow or PBSCs and recipients of cord blood were 2.3%, 1.6% and 5.0%, respectively. Risk factors identified in multivariate analysis were male sex, type of transplanted cells (relative risk in cord blood transplantation, 11...
August 7, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28768993/molecular-basis-of-nucleobase-transport-systems-in-mammals
#17
Katsuhisa Inoue
Nucleobases are water-soluble compounds that need specific transporters to cross biological membranes. Cumulative evidence based on studies using animal tissues and cells indicates that the carrier-mediated transport systems for purine and pyrimidine nucleobases can be classified into the following two types: concentrative transport systems that mediate nucleobase transport depending on the sodium ion concentration gradient; and other systems that mediate facilitated diffusion depending on the concentration gradient of the substrate...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28763428/cmv-infection-in-pediatric-severe-ulcerative-colitis-a-multicenter-study-from-the-pediatric-ibd-porto-group-of-espghan
#18
Shlomi Cohen, Christine Martinez-Vinson, Marina Aloi, Dan Turner, Amit Assa, Lissy de Ridder, Victorien M Wolters, Tim de Meij, Patrizia Alvisi, Jiri Bronsky, Uri Kopylov
BACKGROUND: Data on the clinical course and outcomes of pediatric patients with cytomegalovirus (CMV) infection complicating acute severe ulcerative colitis (ASC) are very limited. The aim of our study was to compare outcomes of children with ASC who were CMV-positive or CMV-negative. METHODS: This was a multicenter retrospective case-controlled study, from centers affiliated with the Pediatric IBD Porto Group of ESPGHAN. We included CMV -positive children hospitalized for ASC and compared their colectomy rate during hospitalization and up to 1 year thereafter, matched with CMV-negative controls...
July 31, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28760351/therapeutic-strategies-for-locally-recurrent-and-metastatic-de-differentiated-liposarcoma-with-herpes-simplex-virus-thymidine-kinase-expressing-mesenchymal-stromal-cells
#19
Hyunjoo Lee, Eun Byeol Jo, Su Jin Kim, Heung Mo Yang, You Min Kim, Young Chul Sung, Jae Berm Park, Doopyo Hong, Hyojun Park, Yoon-La Choi, Sung Joo Kim
BACKGROUND AIMS: Major challenges in de-differentiated liposarcoma (DDLPS) therapy are the high rate of sequential recurrence (>80%) and metastasis (20-30%) following surgical removal. However, well-defined therapeutic strategies for this rare malignancy are lacking and are critically needed. METHODS: We investigated a new approach to DDLPS therapy with mesenchymal stromal cells expressing herpes simplex virus-thymidine kinase (MSC-TK). In an effort to evaluate this efficacy, in vitro cytotoxicity of MSC-TK against DDLPS cells was analyzed using an apoptosis assay...
July 28, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28756205/melanin-binding-study-of-clinical-drugs-with-cassette-dosing-and-rapid-equilibrium-dialysis-inserts
#20
Laura Pelkonen, Unni Tengvall-Unadike, Marika Ruponen, Heidi Kidron, Eva M Del Amo, Mika Reinisalo, Arto Urtti
Melanin pigment is a negatively charged polymer found in pigmented human tissues. In the eye, iris, ciliary body, choroid and retinal pigment epithelium (RPE) are heavily pigmented. Several drug molecules are known to bind to melanin, but larger sets of drugs have not been compared often in similar test conditions. In this study, we introduce a powerful tool for screening of melanin binding. The binding of a set of 34 compounds to isolated porcine RPE melanin was determined by cassette (n-in-one) dosing in rapid equilibrium dialysis inserts and the binding was quantitated with LC-MS/MS analytics...
July 27, 2017: European Journal of Pharmaceutical Sciences
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