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https://www.readbyqxmd.com/read/29151673/the-perfectly-matched-layer-absorbing-boundary-for-fluid-structure-interactions-using-the-immersed-finite-element-method
#1
Jubiao Yang, Feimi Yu, Michael Krane, Lucy T Zhang
In this work, a non-reflective boundary condition, the Perfectly Matched Layer (PML) technique, is adapted and implemented in a fluid-structure interaction numerical framework to demonstrate that proper boundary conditions are not only necessary to capture correct wave propagations in a flow field, but also its interacted solid behavior and responses. While most research on the topics of the non-reflective boundary conditions are focused on fluids, little effort has been done in a fluid-structure interaction setting...
January 2018: Journal of Fluids and Structures
https://www.readbyqxmd.com/read/29142146/inflammatory-natalizumab-associated-pml-baseline-characteristics-lesion-evolution-and-relation-with-pml-iris
#2
Mike P Wattjes, Martijn T Wijburg, Jeroen van Eijk, Stephan Frequin, Bernard M J Uitdehaag, Frederik Barkhof, Clemens Warnke, Joep Killestein
BACKGROUND AND OBJECTIVE: Natalizumab-associated progressive multifocal leukoencephalopathy (NTZ-PML) patients may show imaging signs suggestive of inflammation at diagnosis ('inflammatory PML'), reminiscent of PML-immune reconstitution inflammatory syndrome (PML-IRIS). We investigated the imaging characteristics of inflammatory NTZ-PML lesions and PML-IRIS to determine differentiating and overlapping features. METHODS: We scored the presence, localisation and pattern of imaging characteristics of inflammation on brain MRI scans of inflammatory NTZ-PML patients...
November 15, 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/29139004/progressive-multifocal-leukoencephalopathy-in-the-absence-of-immunosuppression
#3
Benjamin E Zucker, Sybil R L Stacpoole
A 69-year-old woman presented with a cortical hand syndrome progressing over several weeks. MRI brain showed characteristic appearances of progressive multifocal leukoencephalopathy (PML), confirmed by detection of the JC virus in CSF, despite the absence of any evidence of immunosuppression. Treatment with mirtazapine, mefloquine and cidofovir did not affect the progression of the disease, which was fatal within 7 months of presentation. This report adds to the small case literature that suggests that PML can occur in immunocompetent people, albeit extremely rarely...
November 14, 2017: Journal of Neurovirology
https://www.readbyqxmd.com/read/29137406/the-forkhead-box-c1-foxc1-transcription-factor-is-downregulated-in-acute-promyelocytic-leukemia
#4
Emiliano Fabiani, Giulia Falconi, Nélida Inés Noguera, Ernestina Saulle, Laura Cicconi, Mariadomenica Divona, Cristina Banella, Alessandra Picardi, Anna Maria Cerio, Letizia Boe, Massimo Sanchez, Elvira Pelosi, Ugo Testa, Francesco Lo-Coco, Maria Teresa Voso
Forkhead box (FOX) genes encode transcription factors, which regulate embryogenesis and play an important role in hematopoietic differentiation and in mesenchymal niche maintenance. Overexpression of the family member FOXC1 has been reported in solid tumors and acute myeloid leukemia (AML). We studied FOXC1 expression and function in acute promyelocytic leukemia (APL) and normal hematopoietic progenitors. FOXC1 mRNA and protein levels were significantly lower in primary marrow samples from 27 APL patients, as compared to samples obtained from 27 patients with other AML subtypes, and 5 normal CD34+ hematopoietic cells...
October 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/29137212/novel-function-of-the-tumor-suppressor-pml-at-er-mitochondria-sites-in-the-control-of-autophagy
#5
EDITORIAL
Sonia Missiroli, Massimo Bonora, Simone Patergnani, Carlotta Giorgi
No abstract text is available yet for this article.
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29136503/acute-promyelocytic-leukemia-a-paradigm-for-oncoprotein-targeted-cure
#6
REVIEW
Hugues de Thé, Pier Paolo Pandolfi, Zhu Chen
Recent clinical trials have demonstrated that the immense majority of acute promyelocytic leukemia (APL) patients can be definitively cured by the combination of two targeted therapies: retinoic acid (RA) and arsenic. Mouse models have provided unexpected insights into the mechanisms involved. Restoration of PML nuclear bodies upon RA- and/or arsenic-initiated PML/RARA degradation is essential, while RA-triggered transcriptional activation is dispensable for APL eradication. Mutations of the arsenic-binding site of PML/RARA, but also PML, have been detected in therapy-resistant patients, demonstrating the key role of PML in APL cure...
November 13, 2017: Cancer Cell
https://www.readbyqxmd.com/read/29134302/nuclear-organization-during-in-vitro-differentiation-of-porcine-mesenchymal-stem-cells-mscs-into-adipocytes
#7
Joanna Stachecka, Agnieszka Walczak, Beata Kociucka, Błażej Ruszczycki, Grzegorz Wilczyński, Izabela Szczerbal
Differentiation of progenitor cells into adipocytes is accompanied by remarkable changes in cell morphology, cytoskeletal organization, and gene expression profile. Mature adipocytes are filled with a large lipid droplet and the nucleus tends to move to the cell periphery. It was hypothesized that the differentiation process is also associated with changes of nuclear organization. The aim of this study was to determine the number and distribution of selected components of nuclear architecture during porcine in vitro adipogenesis...
November 13, 2017: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/29120025/prevention-and-therapy-of-jc-polyomavirus-mediated-progressive-multifocal-leukoencephalopathy-a-realistic-possibility
#8
Ivan Jelcic, Benoit Combaluzier, Ilijas Jelcic, Mireia Sospedra, Jan Grimm, Roland Martin
Progressive multifocal leukoencephalopathy (PML) is a serious opportunistic infection of the brain caused by the JC polyomavirus (JCPyV). PML occurs when immune control of persistent infection with JCPyV fails, the virus mutates and changes its cellular tropism, enters the brain and infects astrocytes, oligodendrocytes and, in particular cases, also neurones. Currently, there is no therapy for this often fatal disease. A number of approaches have failed, and only the restoration of protective immunity, if possible, can lead to clearance of the virus once PML has occurred...
November 9, 2017: Swiss Medical Weekly
https://www.readbyqxmd.com/read/29119538/safety-and-effectiveness-of-natalizumab-first-report-of-interim-results-of-post-marketing-surveillance-in-japan
#9
Takahiko Saida, Kazumasa Yokoyama, Ryusuke Sato, Haruki Makioka, Yukihiko Iizuka, Masakazu Hase, Yan Ling, Shinichi Torii
INTRODUCTION: Natalizumab, a humanized anti-α4 integrin monoclonal antibody, received marketing approval in Japan in 2014 for the treatment of multiple sclerosis (MS). Because the previous large-scale clinical trials of natalizumab were mainly conducted in Europe and North American countries, and data in patients with MS from Japan were limited, we conducted an all-case post-marketing surveillance of natalizumab-treated MS patients from Japan to investigate the safety and effectiveness of natalizumab in a real-world clinical setting in Japan...
November 8, 2017: Neurology and Therapy
https://www.readbyqxmd.com/read/29114972/frontline-therapy-of-acute-promyelocytic-leukemia-randomized-comparison-of-atra-and-intensified-chemotherapy-versus-atra-and-anthracyclines
#10
Eva Lengfelder, Dennis Görlich, Daniel Nowak, Karsten Spiekermann, Claudia Haferlach, Utz Krug, Karl-Anton Kreuzer, Jan Braess, Christoph Schliemann, Hans-Walter Lindemann, Heinz A Horst, Xaver Schiel, Michael Flasshove, Anna Hecht, Susanne Schnittger, Stephanie Schneider, Bernhard Wörmann, Wolf-Karsten Hofmann, Wolfgang E Berdel, Eike Bormann, Cristina Sauerland, Thomas Büchner, Wolfgang Hiddemann
OBJECTIVES: Randomized comparison of two treatment strategies in frontline therapy of acute promyelocytic leukemia (APL): all-trans retinoic acid (ATRA) and double induction intensified by high dose cytosine arabinoside (HD ara-C) (German AMLCG) and therapy with ATRA and anthracyclines (Spanish PETHEMA, LPA99). PATIENTS AND RESULTS: Eighty of 87 adult patients with genetically confirmed APL of all risk groups were eligible. The outcome of both arms was similar: AMLCG vs PETHEMA: hematological complete remission 87% vs 83%, early death 13% vs 17% (p=0...
November 7, 2017: European Journal of Haematology
https://www.readbyqxmd.com/read/29114882/a-comprehensive-analysis-of-polymorphic-variants-in-steroid-hormone-and-igf-1-metabolism-and-risk-of-in-situ-breast-cancer-results-from-the-breast-and-prostate-cancer-cohort-bpc3-consortium
#11
Myrto Barrdahl, Federico Canzian, Mia M Gaudet, Susan M Gapstur, Antonia Trichopoulou, Kostas Tsilidis, Carla H van Gils, Signe Borgquist, Elisabete Weiderpass, Kay-Tee Khaw, Graham G Giles, Roger L Milne, Loic Le Marchand, Christopher Haiman, Sara Lindström, Peter Kraft, David J Hunter, Regina Ziegler, Stephen J Chanock, Xiaohong R Yang, Julie E Buring, I-Min Lee, Rudolf Kaaks, Daniele Campa
We assessed the association between 1,414 single nucleotide polymorphisms (SNPs) in genes involved in synthesis and metabolism of steroid hormones and IGF-1, and risk of breast cancer in situ (BCIS), with the aim of determining whether any of these were disease specific. This was done using 1,062 BCIS cases and 10,126 controls as well as 6,113 invasive breast cancer cases from the Breast and Prostate Cancer Cohort Consortium (BPC3). Three SNPs showed at least one nominally significant association in homozygous minor versus homozygous major models...
November 7, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29113277/sequence-variations-of-mitochondrial-dna-d-loop-region-in-patients-with-acute-myeloid-leukemia
#12
Juan Zhou, Haimei Gou, Yuanxin Ye, Yi Zhou, Xiaojun Lu, Binwu Ying
The aim of the present study was to explore variations of the displacement (D)-loop region in patients with acute myeloid leukemia (AML) and their possible associations with AML pathogenesis. Blood or bone marrow samples from 216 patients with AML (158 AML patients in the first stage, and 58 more patients with AML-M3 for further verification), and 146 healthy controls were collected. Sanger sequencing was performed for the D-loop region ranging between nucleotide (nt)15811 and nt 775. With the exception of mitochondrial microsatellite instability (mtMSI) variations, a total of 2,630 variations in 232 loci were identified with similar variation rates/person in patients with AML and controls when compared with the revised Cambridge reference sequence (8...
November 2017: Oncology Letters
https://www.readbyqxmd.com/read/29107745/respiratory-syncytial-virus-induces-nrf2-degradation-through-a-promyelocytic-leukemia-protein-ring-finger-protein-4-dependent-pathway
#13
Narayana Komaravelli, Maria Ansar, Roberto P Garofalo, Antonella Casola
Respiratory syncytial virus (RSV) is the most important cause of viral acute respiratory tract infections and hospitalizations in children, for which no vaccine or specific treatments are available. RSV causes airway mucosa inflammation and cellular oxidative damage by triggering production of reactive oxygen species and by inhibiting at the same time expression of antioxidant enzymes, via degradation of the transcription factor NF-E2-related factor 2 (NRF2). RSV infection induces NRF2 deacetylation, ubiquitination, and degradation through a proteasome-dependent pathway...
October 28, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29105243/performance-of-multiplex-fusion-gene-testing-in-pediatric-acute-myeloid-leukemia
#14
Yuka Iijima-Yamashita, Hidemasa Matsuo, Miho Yamada, Takao Deguchi, Nobutaka Kiyokawa, Akira Shimada, Akio Tawa, Hiroyuki Takahashi, Daisuke Tomizawa, Takashi Taga, Akitoshi Kinoshita, Souichi Adachi, Keizo Horibe
BACKGROUND: Gene abnormalities, particularly chromosome rearrangements generating gene fusions, are associated with clinical characteristics and prognosis in pediatric acute myeloid leukemia (AML). Karyotyping is generally performed to enable risk stratification; however, the results are not always consistent with those generated by reverse transcription-polymerase chain reaction (RT-PCR), and more accurate and rapid methods are required. METHODS: A total of 487 samples from de novo AML patients enrolled in the Japanese Pediatric Leukemia/Lymphoma Study Group (JPLSG) AML-05 study (n = 448), and acute promyelocytic leukemia (APL) patients enrolled in the JPLSG AML-P05 study (n = 39) were available for this investigation...
November 4, 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/29101382/deconvolution-of-transcriptional-networks-in-post-traumatic-stress-disorder-uncovers-master-regulators-driving-innate-immune-system-function
#15
Abolfazl Doostparast Torshizi, Kai Wang
Post-Traumatic Stress Disorder (PTSD) is a psychiatric disorder that develops in individuals experiencing a shocking incident, but the underlying disease susceptibility gene networks remain poorly understood. Breen et al. conducted a Weighted Gene Co-expression Network Analysis on PTSD, and identified a dysregulated innate immune module associated with PTSD development. To further identify the Master Regulators (MRs) driving the network function, here we deconvoluted the transcriptional networks on the same datasets using ARACNe (Algorithm for Reconstruction of Accurate Cellular Networks) followed by protein activity analysis...
November 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29097844/ataxia-telangiectasia-and-rad3-related-atr-promyelocytic-leukemia-protein-pml-pathway-of-the-dna-damage-response-in-the-brain-of-rats-administered-arsenic-trioxide
#16
Ryo Watanabe, Kana Unuma, Kanako Noritake, Takeshi Funakoshi, Toshihiko Aki, Koichi Uemura
To examine the in vivo responses of promyelocytic leukemia protein (PML) to arsenic, rats (male, 6 weeks old, Sprague Dawley) were administered a single intraperitoneal dose of 5 mg/kg arsenic trioxide (ATO). The protein was examined in the heart, lung, liver, and brain 6 and 48 hours after administration: a significant response of PML was observed in the brain. Oxidative DNA modification was also observed in the brain as revealed by increased immunoreactivity to anti-8-hydroxy-2'-deoxyguanosine (8-OHdG) antibody...
October 2017: Journal of Toxicologic Pathology
https://www.readbyqxmd.com/read/29093153/limited-exercise-capacity-in-patients-with-systemic-sclerosis-identifying-contributing-factors-with-cardiopulmonary-exercise-testing
#17
Nihal Martis, Viviane Queyrel-Moranne, David Launay, Rémi Neviere, Jean-Gabriel Fuzibet, Charles-Hugo Marquette, Sylvie Leroy
OBJECTIVE: Exercise limitation in patients with systemic sclerosis (SSc) is often multifactorial and related to complications such as interstitial lung disease (ILD), pulmonary vasculopathy (PV), left ventricular dysfunction (LVD), and/or peripheral/muscular limitation (PML). We hypothesized that cardiopulmonary exercise testing (CPET) could not only suggest and rank competing etiologies, but also highlight peripheral impairment. METHODS: Clinical, resting pulmonary function testing, and CPET data from patients with SSc referred for exercise limitation between October 2009 and November 2015 were retrospectively analyzed in this bi-center study...
November 1, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/29091757/infectious-entry-and-neutralization-of-pathogenic-jc-polyomaviruses
#18
Eileen M Geoghegan, Diana V Pastrana, Rachel M Schowalter, Upasana Ray, Wei Gao, Mitchell Ho, Gary T Pauly, Dina M Sigano, Campbell Kaynor, Ellen Cahir-McFarland, Benoit Combaluzier, Jan Grimm, Christopher B Buck
Progressive multifocal leukoencephalopathy (PML) is a lethal brain disease caused by uncontrolled replication of JC polyomavirus (JCV). JCV strains recovered from the brains of PML patients carry mutations that prevent the engagement of sialylated glycans, which are thought to serve as receptors for the infectious entry of wild-type JCV. In this report, we show that non-sialylated glycosaminoglycans (GAGs) can serve as alternative attachment receptors for the infectious entry of both wild-type and PML mutant JCV strains...
October 31, 2017: Cell Reports
https://www.readbyqxmd.com/read/29081694/recurrent-fusion-genes-in-leukemia-an-attractive-target-for-diagnosis-and-treatment
#19
REVIEW
Yuhui Wang, Nan Wu, Duo Liu, Yan Jin
INTRODUCTION: Since the first fusion gene was discovered decades ago, a considerable number of fusion genes have been detected in leukemia. The majority of them are generated through chromosomal rearrangement or abnormal transcription. With the development of techniques, high-throughput sequencing method makes it possible to detect fusion genes systematically in multiple human cancers. Owing to their biological significance and tumor-specific expression, some of the fusion genes are attractive diagnostic tools and therapeutic targets...
October 2017: Current Genomics
https://www.readbyqxmd.com/read/29081404/socs1-regulates-senescence-and-ferroptosis-by-modulating-the-expression-of-p53-target-genes
#20
Emmanuelle Saint-Germain, Lian Mignacca, Mathieu Vernier, Diwakar Bobbala, Subburaj Ilangumaran, Gerardo Ferbeyre
The mechanism by which p53 suppresses tumorigenesis remains poorly understood. In the context of aberrant activation of the JAK/STAT5 pathway, SOCS1 is required for p53 activation and the regulation of cellular senescence. In order to identify p53 target genes acting during the senescence response to oncogenic STAT5A, we characterized the transcriptome of STAT5A-expressing cells after SOCS1 inhibition. We identified a set of SOCS1-dependent p53 target genes that include several secreted proteins and genes regulating oxidative metabolism and ferroptosis...
October 28, 2017: Aging
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