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https://www.readbyqxmd.com/read/27933316/systemic-therapy-with-oncolytic-myxoma-virus-cures-established-residual-multiple-myeloma-in-mice
#1
Eric Bartee, Mee Y Bartee, Bjarne Bogen, Xue-Zhong Yu
Multiple myeloma is an incurable malignancy of plasma B-cells. Traditional chemotherapeutic regimes often induce initial tumor regression; however, virtually all patients eventually succumb to relapse caused by either reintroduction of disease during autologous transplant or expansion of chemotherapy resistant minimal residual disease. It has been previously demonstrated that an oncolytic virus known as myxoma can completely prevent myeloma relapse caused by reintroduction of malignant cells during autologous transplant...
2016: Molecular Therapy Oncolytics
https://www.readbyqxmd.com/read/27933315/immunogenicity-of-self-tumor-associated-proteins-is-enhanced-through-protein-truncation
#2
Tim Kottke, Kevin G Shim, Vanesa Alonso-Camino, Shane Zaidi, Rosa Maria Diaz, Jose Pulido, Jill Thompson, Karishma R Rajani, Laura Evgin, Elizabeth Ilett, Hardev Pandha, Kevin Harrington, Peter Selby, Alan Melcher, Richard Vile
We showed previously that therapy with Vesicular Stomatitis Virus (VSV) expressing tumor-associated proteins eradicates established tumors. We show here that when cellular cDNA were cloned into VSV which retained their own poly-A signal, viral species emerged in culture which had deleted the cellular poly-A signal and also contained a truncated form of the protein coding sequence. Typically, the truncation occurred such that a Tyrosine-encoding codon was converted into a STOP codon. We believe that the truncation of tumor-associated proteins expressed from VSV in this way occurred to preserve the ability of the virus to replicate efficiently...
2016: Molecular Therapy Oncolytics
https://www.readbyqxmd.com/read/27932609/completing-polio-eradication-the-case-for-antiviral-drugs
#3
EDITORIAL
Roland W Sutter, John F Modlin, Michel Zaffran
No abstract text is available yet for this article.
December 8, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27932608/antiviral-activity-of-pocapavir-in-a-randomized-blinded-placebo-controlled-human-oral-poliovirus-vaccine-challenge-model
#4
Marc S Collett, Jeffrey R Hincks, Kimberley Benschop, Erwin Duizer, Harrie van der Avoort, Eric Rhoden, Hongmei Liu, M Steven Oberste, Mark A McKinlay, Marianne Hartford
BACKGROUND: Immunodeficient individuals who excrete vaccine-derived polioviruses threaten polio eradication. Antivirals address this threat. METHODS: In a randomized, blinded, placebo-controlled study, adults were challenged with oral poliovirus vaccine type 1 (mOPV1) and subsequently treated with capsid inhibitor pocapavir or placebo. Time to virus negativity in stool was determined. RESULTS: 144 participants were enrolled; 98% became infected upon OPV challenge...
December 8, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27932111/hepatitis-c-virus-in-kidney-transplant-recipients-a-problem-on-the-path-to-eradication
#5
A Suarez Benjumea, C Gonzalez-Corvillo, J M Sousa, G Bernal Blanco, M Suñer Poblet, M A Perez Valdivia, F M Gonzalez Roncero, P Acevedo, M A Gentil Govantez
BACKGROUND: Hepatitis C virus (HCV) still has significant prevalence in kidney transplant (KT) recipients and is related to poor recipient and graft survival. New direct-acting antivirals (DAA) are leading to a radical change in the problem. METHODS: We studied HCV prevalence at the time of transplantation and in follow-up patients, the way cases are handled, and the results of DAA. RESULTS: A total of 2,001 KT had been performed in our center since 1978...
November 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27932072/a-case-for-sec61-channel-involvement-in-erad
#6
REVIEW
Karin Römisch
Proteins that misfold in the endoplasmic reticulum (ER) need to be transported back to the cytosol for degradation by proteasomes, a process known as ER-associated degradation (ERAD). The first candidate discussed as a retrograde protein transport conduit was the Sec61 channel which is responsible for secretory protein transport into the ER during biogenesis. The Sec61 channel binds the proteasome 19S regulatory particle which can extract an ERAD substrate from the ER. Nevertheless its role as a general export channel has been dismissed, and Hrd1 and Der1 have been proposed as alternatives...
December 5, 2016: Trends in Biochemical Sciences
https://www.readbyqxmd.com/read/27931793/in-vitro-pharmacodynamic-evaluation-of-ceftolozane-tazobactam-against-%C3%AE-lactamase-producing-escherichia-coli-in-a-hollow-fibre-infection-model
#7
Rachel L Soon, Justin R Lenhard, Zackery P Bulman, Patricia N Holden, Pamela Kelchlin, Judith N Steenbergen, Lawrence V Friedrich, Alan Forrest, Brian T Tsuji
The proliferation of multidrug-resistant Gram-negative pathogens has been exacerbated by a lack of novel agents in current development by pharmaceutical companies. Ceftolozane/tazobactam was recently approved by the FDA for the treatment of complicated intra-abdominal infections and complicated urinary tract infections. In the present study, the activity of ceftolozane/tazobactam against four isogenic Escherichia coli strains was investigated in a hollow-fibre infection model simulating various clinical dosing regimens...
September 1, 2016: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/27930711/licheniocin-50-2-and-bacteriocins-from-lactococcus-lactis-subsp-lactis-biovar-diacetylactis-bgbu1-4-inhibit-biofilms-of-coagulase-negative-staphylococci-and-listeria-monocytogenes-clinical-isolates
#8
Ivana Cirkovic, Dragana D Bozic, Veselin Draganic, Jelena Lozo, Tanja Beric, Milan Kojic, Biljana Arsic, Eliana Garalejic, Slobodanka Djukic, Slavisa Stankovic
BACKGROUND: Coagulase negative staphylococci (CoNS) and Listeria monocytogenes have important roles in pathogenesis of various genital tract infections and fatal foetomaternal infections, respectively. The aim of our study was to investigate the inhibitory effects of two novel bacteriocins on biofilms of CoNS and L. monocytogenes genital isolates. METHODS: The effects of licheniocin 50.2 from Bacillus licheniformis VPS50.2 and crude extract of bacteriocins produced by Lactococcus lactis subsp...
2016: PloS One
https://www.readbyqxmd.com/read/27930527/feasibility-of-radiofrequency-ablation-as-an-alternative-to-surgical-intervention-in-patients-with-huge-multiloculated-pyogenic-liver-abscesses-a-retrospective-cohort-study
#9
Shan Ke, Xue-Mei Ding, Jun Gao, Shao-Hong Wang, Jian Kong, Li Xu, Wen-Bing Sun
This retrospective cohort study investigated the feasibility of radiofrequency (RF) ablation as an alternative to surgical intervention in patients with huge multiloculated pyogenic liver abscesses (PLAs).From August 2010 to April 2016, 83 patients with PLA were admitted to Beijing Chao-Yang Hospital, China. Four of these patients had huge multiloculated PLAs and underwent RF ablation plus antibiotics. The inclusion criteria for RF ablation were as follows: multiloculated PLA confirmed by computed tomography (CT) or magnetic resonance imaging (MRI), widest diameter of the PLA ≥5 cm, failure to respond to or not suitable to treatment with percutaneous drainage (PD), and patient refusal of surgery...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27929744/surveillance-of-poliomyelitis-in-northern-italy-results-of-acute-flaccid-paralysis-surveillance-and-environmental-surveillance-2012-2015
#10
Laura Pellegrinelli, Laura Bubba, Valeria Primache, Elena Pariani, Andrea Battistone, Roberto Delogu, Fiore Stefano, Sandro Binda
Although in the last years poliovirus (PV) transmission has been reported at the lowest levels ever recorded, the spread of virus from endemic countries endures; the high levels of immigration flows across the Mediterranean Sea jeopardize Italy for PV reintroduction. The World Health Organization (WHO) strategic plan for global poliomyelitis (polio) eradication indicates the nationwide surveillance of Acute Flaccid Paralysis (AFP) as the gold standard for detecting cases of polio. In addition, the Environmental Surveillance (ES), seeking the presence of PV and Non-Polio Enterovirus (NPEV) in sewage, is recognized as a powerful tool to confirm PV circulation in absence of AFP cases, especially in polio-free countries...
December 8, 2016: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/27928016/promising-role-of-toll-like-receptor-8-agonist-in-concert-with-prostratin-for-activation-of-silent-hiv
#11
M A Rochat, E Schlaepfer, R F Speck
: The persistence of latently HIV-infected cells in patients under combined anti-retroviral treatment (cART) remains the major hurdle for HIV eradication. Thus far, individual compounds have not been sufficiently potent to reactivate latent virus and guarantee its elimination in vivo Thus, we hypothesized that transcriptional enhancers, in concert with compounds triggering the innate immune system, are more efficient in reversing latency by creating a Th1 supportive milieu that acts against latently HIV-infected cells at various levels...
December 7, 2016: Journal of Virology
https://www.readbyqxmd.com/read/27928013/herpes-simplex-virus-1-ul41-protein-suppresses-the-ire1-xbp1-signal-pathway-of-the-unfolded-protein-response-via-its-rnase-activity
#12
Pengchao Zhang, Chenhe Su, Zhangtao Jiang, Chunfu Zheng
: During viral infection, accumulation of viral proteins can cause stress in the endoplasmic reticulum (ER) and trigger the unfolded protein response (UPR) to restore the ER homeostasis. Inositol-requiring enzyme 1 (IRE1)-dependent pathway is the most conserved one of the three UPR signal pathways. Upon activation, IRE1 splices out an intron from the unspliced inactive form X-box binding protein 1 (XBP1(u)) mRNA and produces a transcriptionally potent spliced form (XBP1(s)). Previous studies have reported that the IRE1/XBP1 pathway is inhibited upon herpes simplex virus 1 (HSV-1) infection, however, the underlying molecular mechanism is still illusive...
December 7, 2016: Journal of Virology
https://www.readbyqxmd.com/read/27928008/increasing-type-1-poliovirus-capsid-stability-by-thermal-selection
#13
Oluwapelumi O Adeyemi, Clare Nicol, Nicola J Stonehouse, David J Rowlands
: Poliomyelitis is a highly infectious disease caused by poliovirus (PV). It can result in paralysis and may be fatal. Integrated global immunisation programmes using live-attenuated oral (OPV) and/or inactivated PV vaccines (IPV) have systematically reduced its spread and paved the way for eradication. Immunisation will continue post-eradication to ensure against reintroduction of the disease, but there are biosafety concerns for both OPV and IPV. These could be addressed by the production and use of virus-free virus-like particle (VLP) vaccines which mimic the 'empty' capsids (ECs) normally produced in viral infection...
December 7, 2016: Journal of Virology
https://www.readbyqxmd.com/read/27927929/high-throughput-next-generation-sequencing-of-polioviruses
#14
Anna M Montmayeur, Terry Fei Fan Ng, Alexander Schmidt, Kun Zhao, Laura Magaña, Jane Iber, Christina J Castro, Qi Chen, Elizabeth Henderson, Edward Ramos, Jing Shaw, Roman L Tatusov, Naomi Dybdahl-Sissoko, Marie Claire Endegue-Zanga, Johnson A Adeniji, M Steven Oberste, Cara C Burns
Poliovirus (PV) is currently targeted for worldwide eradication and containment. Sanger-based sequencing of the VP1 capsid region is the current standard method for PV surveillance; however, the whole genome sequence is sometimes needed for higher resolution global surveillance. In this study, we optimized whole genome sequencing protocols for poliovirus isolates and FTA cards using NGS, aiming for high sequence coverage, efficiency, and throughput. We found that DNase treatment of poliovirus RNA followed by random RT, amplification, and the Nextera XT DNA Library Preparation Kit produced significantly better results than other preparations...
December 7, 2016: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27925693/identification-of-n-arylated-nh125-analogues-as-rapid-eradicating-agents-against-mrsa-persister-cells-and-potent-biofilm-killers-of-gram-positive-pathogens
#15
Yasmeen Abouelhassan, Akash Basak, Hussain Yousaf, Robert William Huigens Iii
Bacterial biofilms housing dormant persister cells are innately tolerant to antibiotics and disinfectants, yet several membrane-active agents are known to eradicate tolerant bacterial cells. NH125, a membrane-active persister-killer and starting point for development, led to the identification of N-arylated analogues 1 and 2 and displayed improved biofilm-killing potencies and rapid persister-killing activities in stationary cultures of methicillin-resistant Staphylococcus aureus (MRSA). We found 1 and 2 to be superior to other membrane-active agents in biofilm eradication assays with 1 demonstrating minimum biofilm eradication concentrations (MBEC) of 23...
December 7, 2016: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/27925473/the-role-of-cancer-stem-cells-in-tumor-heterogeneity-and-resistance-to-therapy
#16
Christina Valbirk Konrad, Reshma Murali, Binitha Anu Varghese, Radhika Nair
Cancer is a heterogenous disease displaying marked inter- and intra-tumoral diversity. The existence of cancer stem cells (CSCs) has been experimentally demonstrated in a number of cancer types as a subpopulation of tumor cells that drives the tumorigenic and metastatic properties of the entire cancer. Thus, eradication of the CSC population is critical for the complete ablation of a tumor. This is, however, confounded by the inherent resistance of CSCs to standard anticancer therapies, eventually leading to the outgrowth of resistant tumor cells and relapse in patients...
September 3, 2016: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/27925453/chest-computed-tomography-scores-in-patients-with-cystic-fibrosis-colonized-with-methicillin-resistant-staphylococcus-aureus-mrsa
#17
Michal Gur, Elena Spinelli, Glorida Tridello, Susanna Baltieri, Lucia Pinali, Stefania Montemezzi, Lea Bentur, Baroukh Maurice Assael
BACKGROUND: Methicillin-resistant Staphylococcus aureus (MRSA) is an important pathogen in Cystic Fibrosis (CF), with increasing incidence in recent years. We examined the association between bacterial colonization in the sputum (MRSA with or without pseudomonas (PA)) and computed tomography (CT) scores in CF patients. METHODS: MRSA patients were divided according to PA status based on at least three consecutive sputum cultures; controls were patients without MRSA (with or without PA), matched for gender and age at CT...
December 7, 2016: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/27924436/resolution-of-multifocal-epstein-barr-virus-related-smooth-muscle-tumor-in-a-patient-with-gata2-deficiency-following-hematopoietic-stem-cell-transplantation
#18
Mark Parta, Jennifer Cuellar-Rodriguez, Alexandra F Freeman, Juan Gea-Banacloche, Steven M Holland, Dennis D Hickstein
We performed allogeneic hematopoietic stem cell transplantation in a patient with GATA2 deficiency and an Epstein-Barr virus (EBV)-related spindle cell tumor involving the liver and possibly bone. He received a matched-related donor transplant with donor peripheral blood stem cells following a myeloablative conditioning regimen. He achieved rapid and high levels of donor engraftment and had complete reversal of the clinical and immunologic phenotype of MonoMAC/GATA2 deficiency and eradication of the EBV tumors after 3 years of follow-up...
December 6, 2016: Journal of Clinical Immunology
https://www.readbyqxmd.com/read/27923405/cytochrome-p450-2d-mediated-metabolism-is-not-necessary-for-tafenoquine-and-primaquine-to-eradicate-the-erythrocytic-stages-of-plasmodium-berghei
#19
Erin E Milner, Jonathan Berman, Diana Caridha, Samuel P Dickson, Mark Hickman, Patricia J Lee, Sean R Marcsisin, Lisa T Read, Norma Roncal, Brian A Vesely, Lisa H Xie, Jing Zhang, Ping Zhang, Qigui Li
BACKGROUND: Due to the ability of the 8-aminoquinolines (8AQs) to kill different stages of the malaria parasite, primaquine (PQ) and tafenoquine (TQ) are vital for causal prophylaxis and the eradication of erythrocytic Plasmodium sp. parasites. Recognizing the potential role of cytochrome (CYP) 450 2D6 in the metabolism and subsequent hepatic efficacy of 8-aminoquinolines, studies were designed to explore whether CYP2D-mediated metabolism was related to the ability of single-dose PQ and TQ to eliminate the asexual and sexual erythrocytic stages of Plasmodium berghei...
December 7, 2016: Malaria Journal
https://www.readbyqxmd.com/read/27923365/an-inactivated-ge-deleted-pseudorabies-vaccine-provides-complete-clinical-protection-and-reduces-virus-shedding-against-challenge-by-a-chinese-pseudorabies-variant
#20
Jichun Wang, Rongli Guo, Yongfeng Qiao, Mengwei Xu, Zhisheng Wang, Yamei Liu, Yiqi Gu, Chang Liu, Jibo Hou
BACKGROUND: Since the end of 2011 an outbreak of pseudorabies affected Chinese pig herds that had been vaccinated with the commercial vaccine made of Bartha K61 strain. It is now clear that the outbreak was caused by an emergent PRV variant. Even though vaccines made of PRV Bartha K61 strain can confer certain cross protection against PRV variants based on experimental data, less than optimal clinical protection and virus shedding reduction were observed, making the control or eradication of this disease difficult...
December 7, 2016: BMC Veterinary Research
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