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https://www.readbyqxmd.com/read/28428612/granzyme-k-deficient-mice-show-no-evidence-of-impaired-anti-viral-immunity
#1
Lars T Joeckel, Cody C Allison, Mark Pellegrini, Catherina H Bird, Phillip Ian Bird
The biological role of granzyme K, a serine protease of cytotoxic T lymphocytes (CTL), is controversial. It has been reported to induce perforin-mediated cell death in vitro, but is also reported to be non-cytotoxic and to operate in inflammatory processes. To elucidate the biological role of this protease we have deleted the granzyme K gene in mice (mutant allele: Gzmk(tm1.1Pib); MGI:5636646). Gzmk(-/-) mice are healthy, anatomically normal, fecund, and show normal hematopoietic development. Gzmk(-/-) mice readily recover from Lymphocytic choriomeningitis virus and mouse pox Ectromelia virus infection...
April 21, 2017: Immunology and Cell Biology
https://www.readbyqxmd.com/read/28423464/high-clinical-suspicion-of-donor-derived-disease-leads-to-timely-recognition-and-early-intervention-to-treat-solid-organ-transplant-transmitted-lymphocytic-choriomeningitis-virus
#2
Gagan Mathur, Kunal Yadav, Bradley Ford, Ilana J Schafer, Shridhar V Basavaraju, Barbara Knust, Wun-Ju Shieh, Sam Hill, Garret D Locke, Patricia Quinlisk, Shelley Brown, Ardith Gibbons, Deborah Cannon, Matthew Kuehnert, Stuart T Nichol, Pierre E Rollin, Ute Ströher, Rachel Miller
Despite careful donor screening, unexpected donor-derived infections continue to occur in organ transplant recipients (OTRs). Lymphocytic choriomeningitis virus (LCMV) is one such transplant-transmitted infection that in previous reports has resulted in a high mortality among the affected OTRs. We report a LCMV case cluster that occurred 3 weeks post-transplant in three OTRs who received allografts from a common organ donor in March 2013. Following confirmation of LCMV infection at Centers for Disease Control and Prevention, immunosuppression was promptly reduced and ribavirin and/or intravenous immunoglobulin therapy were initiated in OTRs...
April 19, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28416425/-bilateral-facial-nerve-palsy-associated-with-epstein-barr-virus-infection-in-a-3-year-old-boy
#3
M Grassin, A Rolland, N Leboucq, A Roubertie, F Rivier, P Meyer
Bilateral facial nerve palsy is a rare and sometimes difficult diagnosis. We describe a case of bilateral simultaneous facial nerve palsy associated with Epstein-Barr virus (EBV) infection in a 3-year-old boy. Several symptoms led to the diagnosis of EBV infection: the clinical situation (fever, stomachache, and throat infection), white blood cell count (5300/mm(3) with 70% lymphocyte count), seroconversion with EBV-specific antibodies, lymphocytic meningitis, and a positive blood EBV polymerase chain reaction (9...
April 14, 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/28413671/paraneoplastic-limbic-encephalitis-in-a-patient-with-extensive-disease-small-cell-lung-cancer
#4
Sebastian Ochenduszko, Bartosz Wilk, Joanna Dabrowska, Izabela Herman-Sucharska, Anna Dubis, Miroslawa Puskulluoglu
Paraneoplastic limbic encephalitis (PLE) is a rare disorder infrequently accompanying malignancy, coexisting in ~50% of the cases with small-cell lung cancer (SCLC). The pathomechanism of PLE is considered to be immune-mediated, with production of specific anti-Hu antibodies and activation of T-cells directed against onconeural antigens present on both tumor cells and neurons. We herein report the case of a 50-year-old male patient who, prior to being diagnosed with SCLC, presented with typical symptoms of PLE (seizures, subacute cognitive dysfunction with severe memory impairment, anxiety and hallucinations)...
April 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28385842/permanent-draft-genome-sequence-of-ensifer-sp-strain-lcm-4579-a-salt-tolerant-nitrogen-fixing-bacterium-isolated-from-senegalese-soil
#5
Nathalie Diagne, Erik Swanson, Céline Pesce, Fatoumata Fall, Fatou Diouf, Niokhor Bakhoum, Dioumacor Fall, Mathieu Ndigue Faye, Rediet Oshone, Stephen Simpson, Krystalynne Morris, W Kelley Thomas, Lionel Moulin, Diegane Diouf, Louis S Tisa
The genus Ensifer (formerly Sinorhizobium) contains many species able to form nitrogen-fixing nodules on plants of the legume family. Here, we report the 6.1-Mb draft genome sequence of Ensifer sp. strain LCM 4579, with a G+C content of 62.4% and 5,613 candidate protein-encoding genes.
April 6, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28382109/the-efficacy-of-lacosamide-as-monotherapy-and-adjunctive-therapy-in-focal-epilepsy-and-its-use-in-status-epilepticus-clinical-trial-evidence-and-experience
#6
REVIEW
Sebastian Bauer, Laurent M Willems, Esther Paule, Christine Petschow, Johann Philipp Zöllner, Felix Rosenow, Adam Strzelczyk
Lacosamide (LCM) is approved for anticonvulsive treatment in focal epilepsy and exhibits its function through the slow inactivation of voltage-gated sodium channels (VGSCs). LCM shows comparable efficacy with other antiepileptic drugs (AEDs) licensed in the last decade: in three randomized placebo-controlled trials, significant median seizure reduction rates of 35.2% for 200 mg/day, 36.4-39% for 400 mg/day and 37.8-40% for 600 mg/day were reported. Likewise, 50% responder rates were 38.3-41.1% for 400 mg/day and 38...
February 2017: Therapeutic Advances in Neurological Disorders
https://www.readbyqxmd.com/read/28380974/waveguiding-characteristics-of-surface-enhanced-raman-scattering-signals-along-crystalline-organic-semiconducting-microrod
#7
Seong Gi Jo, Bong Gi Kim, Jinsang Kim, JeongYong Kim, Jinsoo Joo
The waveguiding of surface enhanced Raman scattering (SERS) signals was demonstrated by using organic semiconducting microrods (MRs) hybridized with functionalized gold nanoparticles (Au-NPs). Organic semiconducting 1,4-bis(3,5-bis(trifluoromethyl) styryl)-2,5-dibromobenzene (TSDB) crystalline MRs were fabricated as active optical waveguiding system using a self-assembly method. The static SERS effect and the enhancement of photoluminescence were simultaneously observed for the TSDB MRs hybridized with Au-NPs...
March 20, 2017: Optics Express
https://www.readbyqxmd.com/read/28380666/whole-transcriptome-profiling-of-the-human-hippocampus-suggests-an-involvement-of-the-kibra-rs17070145-polymorphism-in-differential-activation-of-the-mapk-signaling-pathway
#8
I S Piras, J Krate, I Schrauwen, J J Corneveaux, G E Serrano, L Sue, T G Beach, M J Huentelman
The rs17070145-T variant of the WWC1 gene, coding for the KIBRA protein, has been associated with both increased episodic memory performance and lowered risk for late onset Alzheimer's disease, although the mechanism behind this protective effect has not been completely elucidated. To achieve a better understanding of the pathways modulated by rs17070145 and its associated functional variant(s), we used laser capture microdissection (LCM) and RNA-sequencing to investigate the effect of rs17070145 genotypes on whole transcriptome expression in the human hippocampus (HP) of 22 neuropathologically normal individuals, with a specific focus on the dentate gyrus (DG) and at the pyramidal cells (PC) of CA1 and CA3 sub-regions...
April 5, 2017: Hippocampus
https://www.readbyqxmd.com/read/28376081/human-papillomavirus-16-is-an-aetiological-factor-of-scrotal-cancer
#9
Núria Guimerà, Laia Alemany, Gordana Halec, Michael Pawlita, Gerard Vincent Wain, José Santos Salas Vailén, Jerome E Azike, David Jenkins, Silvia de Sanjosé, Wim Quint, F Xavier Bosch
BACKGROUND: Squamous cell scrotal carcinoma (SCSC) is an infrequent skin cancer associated historically with occupational carcinogens. Human papillomavirus (HPV) DNA has been associated with SCSC but there is no definitive proof of its oncogenic role. METHODS: Human papillomavirus-DNA and -E6*I mRNA were analysed in six invasive histologically typed SCSC. LCM-PCR was used to localise HPV DNA to tumour cells. P16(INK4a)and p53 expression were studied by immunohistochemistry...
April 4, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28358042/spatial-and-molecular-resolution-of-diffuse-malignant-mesothelioma-heterogeneity-by-integrating-label-free-ftir-imaging-laser-capture-microdissection-and-proteomics
#10
Frederik Großerueschkamp, Thilo Bracht, Hanna C Diehl, Claus Kuepper, Maike Ahrens, Angela Kallenbach-Thieltges, Axel Mosig, Martin Eisenacher, Katrin Marcus, Thomas Behrens, Thomas Brüning, Dirk Theegarten, Barbara Sitek, Klaus Gerwert
Diffuse malignant mesothelioma (DMM) is a heterogeneous malignant neoplasia manifesting with three subtypes: epithelioid, sarcomatoid and biphasic. DMM exhibit a high degree of spatial heterogeneity that complicates a thorough understanding of the underlying different molecular processes in each subtype. We present a novel approach to spatially resolve the heterogeneity of a tumour in a label-free manner by integrating FTIR imaging and laser capture microdissection (LCM). Subsequent proteome analysis of the dissected homogenous samples provides in addition molecular resolution...
March 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28353117/continuous-cough-monitoring-using-ambient-sound-recording-during-convalescence-from-a-copd-exacerbation
#11
Michael G Crooks, Albertus den Brinker, Yvette Hayman, James D Williamson, Andrew Innes, Caroline E Wright, Peter Hill, Alyn H Morice
PURPOSE: Cough is common in chronic obstructive pulmonary disease (COPD) and is associated with frequent exacerbations and increased mortality. Cough increases during acute exacerbations (AE-COPD), representing a possible metric of clinical deterioration. Conventional cough monitors accurately report cough counts over short time periods. We describe a novel monitoring system which we used to record cough continuously for up to 45 days during AE-COPD convalescence. METHODS: This is a longitudinal, observational study of cough monitoring in AE-COPD patients discharged from a single teaching hospital...
March 28, 2017: Lung
https://www.readbyqxmd.com/read/28351758/the-mouse-cortical-meninges-are-the-site-of-immune-responses-to-many-different-pathogens-and-are-accessible-to-in-vivo-imaging
#12
REVIEW
Jonathan A Coles, Phillip J Stewart-Hutchinson, Elmarie Myburgh, James M Brewer
A wide range of viral and microbial infections are known to cause meningitis, and there is evidence that the meninges are the gateway to pathogenic invasion of the brain parenchyma. Hence observation of these regions has wide application to understanding host-pathogen interactions. Interactions between pathogens and cells of the immune response can be modified by changes in their environment, such as suppression of the flow of blood and lymph, and, particularly in the case of the meninges with their unsupported membranes, invasive dissection can alter the tissue architecture...
March 25, 2017: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/28349359/therapeutic-drug-monitoring-of-lacosamide-in-norway-focus-on-pharmacokinetic-variability-efficacy-and-tolerability
#13
Torleiv Svendsen, Eylert Brodtkorb, Arton Baftiu, Margrete Larsen Burns, Svein I Johannessen, Cecilie Johannessen Landmark
Lacosamide (LCM) is a new antiepileptic drug (AED). Experience from therapeutic drug monitoring (TDM) in clinical practice is limited. The purpose of this study is to evaluate the pharmacokinetic variability of LCM in relation to efficacy and tolerability in patients with refractory epilepsy in a real-life setting. Variables included age, gender, daily doses and serum concentrations of LCM and other AEDs from the TDM-database at the National Center for Epilepsy in Norway. Clinical data regarding efficacy and tolerability were collected from medical records...
March 27, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28324910/lacosamide-lowers-valproate-and-levetiracetam-levels
#14
Maria Tountopoulou, Bernhard Weschke, Angela M Kaindl
Lacosamide (LCM) due to no known drug interaction and the absence of metabolic enzyme induction is a good candidate for an add-on medication, especially in combination with lamotrigine, levetiracetam (LEV), oxcarbazepine, topiramate, and valproic acid (VPA). Here we report for the first time, to our knowledge, that LCM can lower VPA and LEV serum levels. At present, there are no known explicable mechanisms of action of LCM, which lowers VPA and LEV. Here observed drug interaction of LCM is of clinical significance, which might be useful for other colleagues in the field...
March 21, 2017: Neuropediatrics
https://www.readbyqxmd.com/read/28303110/evaluating-intervention-programs-with-a-pretest-posttest-design-a-structural-equation-modeling-approach
#15
Guido Alessandri, Antonio Zuffianò, Enrico Perinelli
A common situation in the evaluation of intervention programs is the researcher's possibility to rely on two waves of data only (i.e., pretest and posttest), which profoundly impacts on his/her choice about the possible statistical analyses to be conducted. Indeed, the evaluation of intervention programs based on a pretest-posttest design has been usually carried out by using classic statistical tests, such as family-wise ANOVA analyses, which are strongly limited by exclusively analyzing the intervention effects at the group level...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28295248/t-regulatory-cells-are-critical-for-the-maintenance-anamnestic-expansion-and-protection-elicited-by-vaccine-induced-cd8-t-cells
#16
Mitra Bhattacharyya, Pablo Penaloza MacMaster
T regulatory cells (Tregs) are critical for preventing autoimmunity and suppressing immune responses during cancer and chronic infection. However, the role of Tregs in the generation of vaccine-induced immune memory remains ill-defined. Using the mouse model of lymphocytic choriomeningitis virus (LCMV) infection, we demonstrate that transient absence of Tregs during effector to memory CD8 T cell transition results in a permanent impairment in the maintenance, function, and recall capacity of CD8 T cells. Memory CD8 T cells in mice that were transiently depleted of Tregs exhibited defective upregulation of memory markers with a significant decrease in polyfunctionality...
March 14, 2017: Immunology
https://www.readbyqxmd.com/read/28295226/lacosamide-in-status-epilepticus-systematic-review-of-current-evidence
#17
REVIEW
Adam Strzelczyk, Johann Philipp Zöllner, Laurent M Willems, Julie Jost, Esther Paule, Susanne Schubert-Bast, Felix Rosenow, Sebastian Bauer
OBJECTIVE: The intravenous formulation of lacosamide (LCM) and its good overall tolerability and safety favor the use in status epilepticus (SE). The aim of this systematic review was to identify and evaluate studies reporting on the use of LCM in SE. METHODS: We performed a systematic literature search of electronic databases using a combined search strategy from 2008 until October 2016. Using a standardized assessment form, information on the study design, methodologic framework, data sources, efficacy, and adverse events attributed to LCM were extracted from each publication and systematically reported...
March 11, 2017: Epilepsia
https://www.readbyqxmd.com/read/28288046/fdg-pet-ct-in-pediatric-neurolymphomatosis
#18
Carole de Vaugelade, Henri de Clermont-Gallerande, Marie Meyer, Aude My Duyen Tiphaine, Alice Benjamin, Stephane Ducassou, Jean-François Chateil, Philippe Fernandez
An 8-year-old girl presented with back and leg pain and left arm and leg paresis. Lumbar puncture was suggestive of lymphocytic meningitis without identified organism. A second lumbar puncture demonstrated a large number of lymphoid B cells, with positive immunohistochemical staining for CD20 and CD25, proving the diagnosis of neurolymphomatosis. Brain and spine MRI demonstrated involvement of cervical and lumbosacral nerve roots. FDG PET/CT showed multiple bone metastases in addition to nerve involvement. Postchemotherapy FDG PET/CT demonstrated complete metabolic response...
May 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28287115/efficient-control-of-chronic-lcmv-infection-by-a-cd4-t-cell-epitope-based-heterologous-prime-boost-vaccination-in-a-murine-model
#19
Ran He, Xinxin Yang, Cheng Liu, Xiangyu Chen, Lin Wang, Minglu Xiao, Jianqiang Ye, Yuzhang Wu, Lilin Ye
CD4(+) T cells are essential for sustaining CD8(+) T cell responses during a chronic infection. The adoptive transfer of virus-specific CD4(+) T cells has been shown to efficiently rescue exhausted CD8(+) T cells. However, the question of whether endogenous virus-specific CD4(+) T cell responses can be enhanced by certain vaccination strategies and subsequently reinvigorate exhausted CD8(+) T cells remains unexplored. In this study, we developed a CD4(+) T cell epitope-based heterologous prime-boost immunization strategy and examined the efficacy of this strategy using a mouse model of chronic lymphocytic choriomeningitis virus (LCMV) infection...
March 13, 2017: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/28281853/lymphocytic-meningitis-in-patients-with-sympathetic-ophthalmia
#20
Mathilde Goudot, Matthieu Groh, Sawsen Salah, Dominique Monnet, Philippe Blanche, Antoine P Brézin
PURPOSE: This study aimed at reporting lymphocytic meningitis in patients diagnosed with sympathetic ophthalmia (SO). METHODS: In this single-center retrospective observational case series, we reviewed cases diagnosed with SO. We analyzed the patients' inciting injuries, the characteristics of uveitis and the cerebrospinal fluid (CSF) analyses. RESULTS: Nine patients were diagnosed with SO and CSF analyses were available in all cases. Four cases had lymphocytic pleocytosis, 3 of which showed marked CSF inflammation with more than 300 lymphocytes/mm(3)...
April 2017: Ocular Immunology and Inflammation
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