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https://www.readbyqxmd.com/read/28081328/cytomegalovirus-hepatitis-in-49-pediatric-patients-with-normal-immunity
#1
Hasan Tezer, Saliha Kanık Yüksek, Belgin Gülhan, Aslı Nur Özkaya Parlakay, Ceyda Tuna Kırsaçlıoğlu
BACKGROUND/AIM: Cytomegalovirus (CMV) hepatitis is generally asymptomatic or rarely can lead to severe complications in immunocompetent hosts. This study aims to evaluate CMV hepatitis in immunocompetent young children, which is discussed relatively rarely in the literature. MATERIALS AND METHODS: A retrospective review of 49 pediatric patients with CMV hepatitis from January 2005 to December 2010 was performed. RESULTS: The median age of the patients was 5...
December 20, 2016: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28059624/pre-clinical-development-of-gene-modification-of-hematopoietic-stem-cells-with-chimeric-antigen-receptors-for-cancer-immunotherapy
#2
Sarah M Larson, Laurel C Truscott, Tzu-Ting Chiou, Amie Patel, Roy Kao, Andy Tu, Tulika Tyagi, Xiang Lu, David Elashoff, Satiro N De Oliveira
Patients with refractory or recurrent B-lineage hematologic malignancies have less than 50% of chance of cure despite intensive therapy and innovative approaches are needed. We hypothesize that gene modification of hematopoietic stem cells (HSC) with an anti-CD19 chimeric antigen receptor (CAR) will produce a multi-lineage, persistent immunotherapy against B-lineage malignancies that can be controlled by the HSVsr39TK suicide gene. High-titer third-generation self-inactivating lentiviral constructs were developed to deliver a second-generation CD19-specific CAR and the herpes simplex virus thymidine kinase HSVsr39TK to provide a suicide gene to allow ablation of gene-modified cells if necessary...
January 6, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28039960/preventive-strategies-against-cytomegalovirus-and-incidence-of-%C3%AE-herpesvirus-infections-in-olid-organ-transplant-recipients-a-nationwide-cohort-study
#3
Cecilia Martin-Gandul, Susanne Stampf, Delphine Héquet, Nicolas J Mueller, Alexia Cusini, Christian van Delden, Nina Khanna, Katia Boggian, Cédric Hirzel, Paola Soccal, Hans H Hirsch, Manuel Pascual, Pascal Meylan, Oriol Manuel
We assessed the impact of antiviral preventive strategies on the incidence of herpes-simplex virus (HSV) and varicella-zoster virus (VZV) infections in a nationwide cohort of transplant recipients. Risk factors for the development of HSV/VZV infection were assessed by Cox PH regression. We included 2781 patients (56% kidney, 20% liver, 10% lung, 7.3% heart, 6.7% others). Overall, 1264 (45%) patients received antiviral prophylaxis [(val)ganciclovir (n=1126) or (val)acyclovir (n=138)]. Incidences for HSV and VZV infections were 28...
December 31, 2016: American Journal of Transplantation
https://www.readbyqxmd.com/read/28035376/suicide-gene-therapy-of-rhabdomyosarcoma
#4
Paweł Konieczny, Maciej Sułkowski, Bogna Badyra, Jacek Kijowski, Marcin Majka
Rhabdomyosarcoma is the most common soft tissue sarcoma in childhood and young adulthood. Conventional treatment consisting of surgery, chemotherapy and radiotherapy can be insufficient, as long-term survival chances decrease dramatically when cancer recurrence occurs. Due to this fact, efficient treatment of this cancer is still a demanding issue, thus, novel and innovative therapies have to be considered as a part of combined treatment. In the present study, we present effective suicide gene therapy of rhabdomyosarcoma cell line Rh30 involving herpes simplex thymidine kinase (HSV-TK) and ganciclovir (GCV)...
December 29, 2016: International Journal of Oncology
https://www.readbyqxmd.com/read/28004435/biopsy-proven-case-of-epstein-barr-virus-ebv-associated-vasculitis-of-the-central-nervous-system
#5
Kohei Kano 鹿野耕平, Takayuki Katayama, Shiori Takeguchi, Asuka Asanome, Kae Takahashi, Tsukasa Saito, Jun Sawada, Masato Saito, Ryogo Anei, Kyousuke Kamada, Naoyuki Miyokawa, Hiroshi Nishihara, Naoyuki Hasebe
A 75-year-old woman was admitted to our hospital with rapidly deteriorating consciousness disturbance. She had a 7-year history of rheumatoid arthritis (RA), which had been treated with methotrexate (MTX) and prednisolone. Brain T2-weighted MRI showed diffuse high-intensity lesions in the cerebral subcortical and deep white matter, bilateral basal ganglia and thalamus. A cerebrospinal fluid examination revealed elevated protein levels and positive Epstein-Barr virus (EBV) DNA. Human immunodeficiency virus was negative...
December 22, 2016: Neuropathology: Official Journal of the Japanese Society of Neuropathology
https://www.readbyqxmd.com/read/27999698/necrotizing-retinitis-secondary-to-congenital-cytomegalovirus-infection-associated-with-severe-combined-immunodeficiency
#6
Pehmen Yasin Ozcan, Hasan Tolga Celik, Kenan Sonmez, Melda Celik
A 20-day-old male infant who was born at 39 weeks of gestation was admitted to neonatal intensive care unit due to severe respiratory insufficiency. In retinal examination, peripheric retinal white-black color areas that correspond to necrotizing retinitis, moderate vitritis, macular and optic nerve head involvement, vascular leakage, and sheathing indicating perivasculitis were revealed. Despite the fact that CMV specific IgM was undetectable, CMV DNA with high viral load was found in his blood sample by means of real-time polymerase chain reaction assay...
2016: Case Reports in Ophthalmological Medicine
https://www.readbyqxmd.com/read/27990449/elimination-of-proliferating-cells-from-cns-grafts-using-a-ki67-promoter-driven-thymidine-kinase
#7
Vannary Tieng, Ophelie Cherpin, Eveline Gutzwiller, Alexander C Zambon, Christophe Delgado, Patrick Salmon, Michel Dubois-Dauphin, Karl-Heinz Krause
Pluripotent stem cell (PSC)-based cell therapy is an attractive concept for neurodegenerative diseases, but can lead to tumor formation. This is particularly relevant as proliferating neural precursors rather than postmitotic mature neurons need to be transplanted. Thus, safety mechanisms to eliminate proliferating cells are needed. Here, we propose a suicide gene approach, based on cell cycle-dependent promoter Ki67-driven expression of herpes simplex virus thymidine kinase (HSV-TK). We generated a PSC line expressing this construct and induced neural differentiation...
2016: Molecular Therapy. Methods & Clinical Development
https://www.readbyqxmd.com/read/27987421/successful-oral-treatment-of-ganciclovir-resistant-cytomegalovirus-with-maribavir-in-the-context-of-primary-immunodeficiency-first-case-report-and-review
#8
Philip D Bright, Mark Gompels, Matthew Donati, Sarah Johnston
No abstract text is available yet for this article.
December 12, 2016: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/27974833/tissue-extract-fractions-from-starfish-undergoing-regeneration-promote-wound-healing-and-lower-jaw-blastema-regeneration-of-zebrafish
#9
Yancen Dai, Nagarajan Prithiviraj, Jianhong Gan, Xin A Zhang, Jizhou Yan
Natural bioactive materials provide an excellent pool of molecules for regenerative therapy. In the present study, we amputate portions of the arms of Archaster typicus starfish, extract and separate the active biomaterials, and compare the effects of each fraction on in vitro wound healing and in vivo lower jaw regeneration of zebrafish. Compared with crude extract, normal hexane fractions (NHFs) have a remarkable effect on cellular proliferation and collective migration, and exhibit fibroblast-like morphology, while methanol-water fractions (MWFs) increase cell size, cell-cell adhesion, and cell death...
December 15, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27966439/ganciclovir-induced-ataxia-and-encephalopathy
#10
M C Möhlmann, J Stiksma, M H H Kramer
BACKGROUND: Ganciclovir can be used to treat a primary cytomegalovirus (CMV) infection, however it can cause side effects. CASE DESCRIPTION: We describe a 60-year-old immunocompromised woman with a primary CMV infection who was treated with ganciclovir. She developed an encephalopathy which resolved after discontinuation of ganciclovir. CONCLUSION: A reversible encephalopathy as a side effect of ganciclovir.
December 2016: Netherlands Journal of Medicine
https://www.readbyqxmd.com/read/27943125/identifying-high-risk-medications-associated-with-acute-kidney-injury-in-critically-ill-patients-a-pharmacoepidemiologic-evaluation
#11
Morgan B Slater, Andrea Gruneir, Paula A Rochon, Andrew W Howard, Gideon Koren, Christopher S Parshuram
BACKGROUND: Nephrotoxic medications are a common cause of acute kidney injury (AKI). Critically ill children receive more medication than other inpatients; however, the risk of nephrotoxic medication-induced AKI in these children is not well understood. OBJECTIVE: The aim of this study was to determine the association between exposure to nephrotoxic medications in the intensive care unit (ICU) and the development of AKI amongst critically ill children, adjusting for differences in underlying risk...
December 9, 2016: Paediatric Drugs
https://www.readbyqxmd.com/read/27940027/foscarnet-resistance-mutations-mapping-to-atypical-domains-of-the-cytomegalovirus-dna-polymerase-gene
#12
Sunwen Chou
Human cytomegalovirus UL54 DNA polymerase gene mutations that confer foscarnet resistance in clinical practice typically cluster in the amino terminal 2, palm and finger domains. Exposure to foscarnet in cell culture selected for mutations elsewhere in UL54, including amino acid substitutions S290R in the amino terminal 1 domain and E951D in the palm 2 domain. These are newly confirmed to confer foscarnet resistance and slightly decreased ganciclovir susceptibility. Other emergent substitutions N495K, T552N and T838A are known to confer foscarnet resistance, while additional ones Q783R and V798A only slightly affected susceptibility...
February 2017: Antiviral Research
https://www.readbyqxmd.com/read/27933314/tunneling-nanotubes-an-alternate-route-for-propagation-of-the-bystander-effect-following-oncolytic-viral-infection
#13
Justin Ady, Venugopal Thayanithy, Kelly Mojica, Phillip Wong, Joshua Carson, Prassanna Rao, Yuman Fong, Emil Lou
Tunneling nanotubes (TNTs) are ultrafine, filamentous actin-based cytoplasmic extensions which form spontaneously to connect cells at short and long-range distances. We have previously described long-range intercellular communication via TNTs connecting mesothelioma cells in vitro and demonstrated TNTs in intact tumors from patients with mesothelioma. Here, we investigate the ability of TNTs to mediate a viral thymidine kinase based bystander effect after oncolytic viral infection and administration of the nucleoside analog ganciclovir...
2016: Molecular Therapy Oncolytics
https://www.readbyqxmd.com/read/27932138/potential-immunomodulatory-role-of-specific-anticytomegalovirus-intravenous-immunoglobulin-in-heart-recipients
#14
J Carbone, A Gallego, J Fernandez Yañez, I Sousa, E Sarmiento
BACKGROUND: Specific anticytomegalovirus (anti-CMV) intravenous immunoglobulin (IVIG) has the potential to influence the immune response, but its complex mode of action has not been well evaluated. METHODS: An immunologic study of 6 CMV-seronegative heart transplant patients receiving anti-CMV prophylaxis with the use of ganciclovir and CMV-IVIG (150 mg/kg within 24 hours after transplantation and 100 mg/kg on days 2, 7, 14, 22, 35, 56, and 77 after transplantation) was performed in a single center...
November 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27923378/congenital-cytomegalovirus-related-intestinal-malrotation-a-case-report
#15
Claudia Colomba, Mario Giuffrè, Simona La Placa, Antonio Cascio, Marcello Trizzino, Simona De Grazia, Giovanni Corsello
BACKGROUND: Cytomegalovirus is the most common cause of congenital infection in the developed countries. Gastrointestinal involvement has been extensively described in both adult and paediatric immunocompromised patients but it is infrequent in congenital or perinatal CMV infection. CASE PRESENTATION: We report on a case of coexistent congenital Cytomegalovirus infection with intestinal malrotation and positive intestinal Cytomegalovirus biopsy. At birth the neonate showed clinical and radiological evidence of intestinal obstruction...
December 7, 2016: Italian Journal of Pediatrics
https://www.readbyqxmd.com/read/27903977/dioscin-augments-hsv-tk-mediated-suicide-gene-therapy-for-melanoma-by-promoting-connexin-based-intercellular-communication
#16
Jianyong Xiao, Guangxian Zhang, Bin Li, Yingya Wu, Xijuan Liu, Yuhui Tan, Biaoyan Du
Suicide gene therapy is a promising strategy against melanoma. However, the low efficiency of the gene transfer technique can limit its application. Our preliminary data showed that dioscin, a glucoside saponin, could upregulate the expression of connexins Cx26 and Cx43, major components of gap junctions, in melanoma cells. We hypothesized that dioscin may increase the bystander effect of herpes simplex virus thymidine kinase/ganciclovir (HSV-tk/GCV) through increasing the formation of gap junctions. Further analysis showed that dioscin indeed could increase the gap junctional intercellular communication in B16 melanoma cells, resulting in more efficient GCV-induced bystander killing in B16tk cells...
November 26, 2016: Oncotarget
https://www.readbyqxmd.com/read/27899387/activation-of-cytomegalovirus-corneal-endotheliitis-following-laser-in-situ-keratomileusis
#17
Tien-En Tan, Chui Ming Gemmy Cheung, Jodhbir S Mehta
A case of Cytomegalovirus (CMV) corneal endotheliitis following laser in-situ keratomileusis (LASIK) is presented. A 32-year-old man presented 3 weeks after uncomplicated myopic LASIK with unilateral LASIK flap oedema, interface fluid accumulation, keratic precipitates, anterior uveitis and raised intraocular pressure. Despite treatment with topical corticosteroids, he had 3 further recurrent episodes. Specular microscopy showed decreased endothelial cell density and aqueous humour. Polymerase chain reaction (PCR) testing was positive for CMV DNA...
November 29, 2016: BMJ Case Reports
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
#18
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 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 Human cytomegalovirus infection. PATIENTS AND METHODS: Independent from the clinical strategy adopted for managing Human cytomegalovirus 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/27871917/gonococcal-conjunctivitis-a-case-report-of-an-unusual-mode-of-transmission
#19
Anna Jo Bodurtha Smith, Samuel B Holzman, Reza Sedighi Manesh, Trish M Perl
BACKGROUND: Outside of the newborn period, development of gonococcal conjunctivitis is rare and predominantly occurs through autoinoculation. We report an unusual case of gonococcal conjunctivitis in a young woman exposed through direct inoculation. CASE: A 19-year-old woman presented with purulent ocular discharge, severe pain, and decreased vision unresponsive to topical antibiotics or ganciclovir approximately 3 weeks after accidental ocular exposure to seminal fluid during unprotected oral sex...
November 18, 2016: Journal of Pediatric and Adolescent Gynecology
https://www.readbyqxmd.com/read/27849440/use-of-cidofovir-for-cytomegalovirus-disease-refractory-to-ganciclovir-in-solid-organ-recipients
#20
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
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