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https://www.readbyqxmd.com/read/27902770/mitochondrial-targeted-decyl-triphenylphosphonium-enhances-2-deoxy-d-glucose-mediated-oxidative-stress-and-clonogenic-killing-of-multiple-myeloma-cells
#1
Jeanine Schibler, Ann M Tomanek-Chalkley, Jessica L Reedy, Fenghuang Zhan, Douglas R Spitz, Michael K Schultz, Apollina Goel
Therapeutic advances have markedly prolonged overall survival in multiple myeloma (MM) but the disease currently remains incurable. In a panel of MM cell lines (MM.1S, OPM-2, H929, and U266), using CD138 immunophenotyping, side population staining, and stem cell-related gene expression, we demonstrate the presence of stem-like tumor cells. Hypoxic culture conditions further increased CD138low stem-like cells with upregulated expression of OCT4 and NANOG. Compared to MM cells, these stem-like cells maintained lower steady-state pro-oxidant levels with increased uptake of the fluorescent deoxyglucose analog...
2016: PloS One
https://www.readbyqxmd.com/read/27887925/a-large-degenerated-gastrointestinal-stromal-tumor-presenting-as-a-peri-pancreatic-cyst
#2
James W Walter, William Klump, Francis Spitz, Adam Elfant, Henry C Ho
No abstract text is available yet for this article.
November 22, 2016: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/27874879/bullous-pemphigoid-associated-with-a-lymphoepithelial-cyst-of-the-pancreas
#3
Preston W Chadwick, Francis R Spitz, Daniel M Kwa, Waine C Johnson, Warren R Heymann
Bullous pemphigoid (BP) is an acquired, autoimmune, subepidermal blistering disorder. A possible paraneoplastic association has been suggested; however, debate remains regarding the precise relationship of these neoplasms with BP. We present a case of recalcitrant BP in a 67-year-old man with a pancreatic neoplasm that was found to be a lymphoepithelial cyst. Immunoperoxidase staining of the cyst demonstrated C3d along the basement membrane of the stratified squamous epithelium, suggesting that the BP may have involved the lymphoepithelial cyst itself...
October 2016: Cutis; Cutaneous Medicine for the Practitioner
https://www.readbyqxmd.com/read/27874206/spitz-nevi-and-other-spitzoid-neoplasms-in-children-overview-of-incidence-data-and-diagnostic-criteria
#4
REVIEW
Emi Dika, Giulia Maria Ravaioli, Pier Alessandro Fanti, Iria Neri, Annalisa Patrizi
Spitz nevi are benign melanocytic neoplasms characterized by epithelioid or spindle melanocytes or both. In some rare cases their presentation overlaps with the clinical and histopathologic features of malignant melanoma, so a differential diagnosis can be difficult to make. Intermediate forms between Spitz nevi and malignant melanoma, with unpredictable behavior, have been called atypical Spitz tumors. A literature search was performed to review the clinical, dermoscopic, genetic, and histopathologic aspects of spitzoid tumors...
November 22, 2016: Pediatric Dermatology
https://www.readbyqxmd.com/read/27867070/the-shh-topological-domain-facilitates-the-action-of-remote-enhancers-by-reducing-the-effects-of-genomic-distances
#5
Orsolya Symmons, Leslie Pan, Silvia Remeseiro, Tugce Aktas, Felix Klein, Wolfgang Huber, François Spitz
Gene expression often requires interaction between promoters and distant enhancers, which occur within the context of highly organized topologically associating domains (TADs). Using a series of engineered chromosomal rearrangements at the Shh locus, we carried out an extensive fine-scale characterization of the factors that govern the long-range regulatory interactions controlling Shh expression. We show that Shh enhancers act pervasively, yet not uniformly, throughout the TAD. Importantly, changing intra-TAD distances had no impact on Shh expression...
November 16, 2016: Developmental Cell
https://www.readbyqxmd.com/read/27860221/spitz-nevi-diverse-clinical-dermatoscopic-and-histopathological-features-in-childhood
#6
Emi Dika, Iria Neri, Pier Alessandro Fanti, Alessia Barisani, Giulia Maria Ravaioli, Annalisa Patrizi
BACKGROUND AND OBJECTIVES: The characterization of clinical features and biological potential of Spitz nevi has attracted a lot of interest in past decades. The aim of our paper was to describe the clinical, dermatoscopic features as well as the clinical outcome of surgically excised Spitz nevi in three different pediatric age groups. PATIENTS AND METHODS: A retrospective study analyzing clinical features, videodermatoscopic images, histopathological diagnosis and patient outcome...
November 10, 2016: Journal der Deutschen Dermatologischen Gesellschaft, Journal of the German Society of Dermatology: JDDG
https://www.readbyqxmd.com/read/27855509/2016-white-paper-on-recent-issues-in-bioanalysis-focus-on-biomarker-assay-validation-bav-part-2-hybrid-lba-lcms-and-input-from-regulatory-agencies
#7
An Song, Anita Lee, Fabio Garofolo, Surinder Kaur, Jeff Duggan, Christopher Evans, Joe Palandra, Lorella Di Donato, Keyang Xu, Ronald Bauer, Mark Bustard, Linzhi Chen, Laurent Cocea, Stephanie Croft, Fabrizio Galliccia, Sam Haidar, Nicola Hughes, Akiko Ishii-Watabe, Rafiqul Islam, Barry Jones, John Kadavil, Carsten Krantz, Gustavo Mendes Lima Santos, Timothy Olah, João Pedras-Vasconcelos, Ludovicus Staelens, Yoshiro Saito, Natasha Savoie, Kara Scheibner, Susan Spitz, Nilufer Tampal, Eric Thomas, Stephen Vinter, Jason Wakelin-Smith, Jan Welink, Jianing Zeng, Shaolian Zhou
The 2016 10th Workshop on Recent Issues in Bioanalysis (10(th) WRIB) took place in Orlando, Florida with participation of close to 700 professionals from pharmaceutical/biopharmaceutical companies, biotechnology companies, contract research organizations, and regulatory agencies worldwide. WRIB was once again a 5-day, weeklong event - A Full Immersion Week of Bioanalysis including Biomarkers and Immunogenicity. As usual, it is specifically designed to facilitate sharing, reviewing, discussing and agreeing on approaches to address the most current issues of interest including both small and large molecules involving LCMS, hybrid LBA/LCMS, and LBA approaches, with the focus on biomarkers and immunogenicity...
December 2016: Bioanalysis
https://www.readbyqxmd.com/read/27827934/practical-and-metal-free-synthesis-of-novel-enantiopure-amides-containing-the-potentially-bioactive-5-nitroimidazole-moiety
#8
Cédric Spitz, Fanny Mathias, Alain Gamal Giuglio-Tonolo, Thierry Terme, Patrice Vanelle
We report here a practical and metal-free synthesis of novel enantiopure amides containing the drug-like 5-nitroimidazole scaffold. The first step was a metal-free diastereoselective addition of 4-(4-(chloromethyl)phenyl)-1,2-dimethyl-5-nitro-1H-imidazole to enantiomerically pure N-tert-butanesulfinimine. Then, the N-tert-butanesulfinyl-protected amine was easily deprotected under acidic conditions. Finally, the primary amine was coupled with different acid chlorides or acids to give the corresponding amides...
November 4, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27814313/correlations-between-postural-control-and-psychological-factors-in-vestibular-schwannoma-patients
#9
Laurence Ribeyre, Elisabeth Spitz, Julien Frère, Gerome Gauchard, Cécile Parietti-Winkler
BACKGROUND: Various individual factors have been described to influence postural performances related to vestibular schwannoma. However, psychological factors may also be involved in postural variations. OBJECTIVE: To identify relationships between postural performances, illness perceptions, coping, anxiety-depression and quality of life of patients with vestibular schwannoma. METHODS: Twenty-six patients who were scheduled for a surgical removal of a vestibular schwannoma underwent posturography tests and were asked to complete psychological questionnaires three days prior to surgery...
November 3, 2016: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/27804198/debugging-eukaryotic-genetic-code-expansion-for-site-specific-click-paint-super-resolution-microscopy
#10
Ivana Nikić, Gemma Estrada Girona, Jun Hee Kang, Giulia Paci, Sofya Mikhaleva, Christine Koehler, Nataliia V Shymanska, Camilla Ventura Santos, Daniel Spitz, Edward A Lemke
Super-resolution microscopy (SRM) greatly benefits from the ability to install small photostable fluorescent labels into proteins. Genetic code expansion (GCE) technology addresses this demand, allowing the introduction of small labeling sites, in the form of uniquely reactive noncanonical amino acids (ncAAs), at any residue in a target protein. However, low incorporation efficiency of ncAAs and high background fluorescence limit its current SRM applications. Redirecting the subcellular localization of the pyrrolysine-based GCE system for click chemistry, combined with DNA-PAINT microscopy, enables the visualization of even low-abundance proteins inside mammalian cells...
November 2, 2016: Angewandte Chemie
https://www.readbyqxmd.com/read/27786334/cd70-limits-atherosclerosis-and-promotes-macrophage-function
#11
Holger Winkels, Svenja Meiler, Esther Smeets, Dirk Lievens, David Engel, Charlotte Spitz, Christina Bürger, Petteri Rinne, Linda Beckers, Angelika Dandl, Sigrid Reim, Maiwand Ahmadsei, Jan Van den Bossche, Lesca M Holdt, Remco T A Megens, Martin Schmitt, Menno de Winther, Eric A Biessen, Jannie Borst, Alexander Faussner, Christian Weber, Esther Lutgens, Norbert Gerdes
The co-stimulatory molecule CD70 is expressed on activated immune cells and is known to modulate responses of T, B, and NK cells via its receptor CD27. Until now, there is only limited data describing the role of CD70 in atherosclerosis. We observed that ruptured human carotid atherosclerotic plaques displayed higher CD70 expression than stable carotid atherosclerotic plaques, and that CD70 expression in murine atheroma localized to macrophages. Lack of CD70 impaired the inflammatory capacity (e. g. reactive oxygen species and nitric oxide production) of bone marrow-derived macrophages, increased both M1-like and M2-like macrophage markers, and rendered macrophages metabolically inactive and prone to apoptosis...
October 27, 2016: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/27779859/-continuous-fluorescence-assays-for-reactions-involving-adenine
#12
Ross S Firestone, Scott A Cameron, Peter C Tyler, Rodrigo Gay Ducati, Adam Z Spitz, Vern L Schramm
5'-Methylthioadenosine phosphorylase (MTAP) and 5'-methylthioadenosine nucleosidase (MTAN) catalyze the phosphorolysis and hydrolysis of 5'-methylthioadenosine (MTA), respectively. Both enzymes have low KM values for their substrates. Kinetic assays for these enzymes are challenging, as the ultraviolet absorbance spectra for reactant MTA and product adenine are similar. We report a new assay using 2-amino-5'-methylthioadenosine (2AMTA) as an alternative substrate for MTAP and MTAN enzymes. Hydrolysis or phosphorolysis of 2AMTA forms 2,6-diaminopurine, a fluorescent and easily quantitated product...
October 25, 2016: Analytical Chemistry
https://www.readbyqxmd.com/read/27776007/a-comparison-of-morphologic-and-molecular-features-of-braf-alk-and-ntrk1-fusion-spitzoid-neoplasms
#13
Sapna M Amin, Alexandra M Haugh, Christina Y Lee, Bin Zhang, Jeffrey A Bubley, Emily A Merkel, Anna Elisa Verzì, Pedram Gerami
Recent studies have identified translocations involving the kinase domains of ALK, NTRK1, BRAF, RET, and ROS in spitzoid neoplasms. Subsequent studies have also characterized morphologic features corresponding to ALK and NTRK1 translocations. In this study, we sought to further compare morphologic features across a range of 49 genetically defined spitzoid neoplasms with ALK, NTRK1, BRAF, or RET fusions to determine discriminating features. We also compared them with a group of 22 spitzoid neoplasms, which were confirmed to be negative for fusions in ALK, NTRK1, BRAF, and RET...
October 21, 2016: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/27758761/eruptive-disseminated-spitz-nevi
#14
Francesco Ricci, Andrea Paradisi, Giorgio Annessi, Mauro Paradisi, Damiano Abeni
BACKGROUND: The solitary form of Spitz nevus is a common clinical entity in children, typically occurring on the face and extremities. However, less frequent variants of Spitz nevi, such as agminated forms and eruptive disseminated Spitz nevi (EDSN), have been described. The agminated form is characterised by localised clusters or segmental distribution of Spitz nevi on the face, back, or extremities. First described as "eruptive juvenile melanomata", EDSN is the rarest clinical variant, consisting of a widespread eruption of Spitz nevi, most frequently involving the trunk, buttocks, and proximal limbs, and usually occurs in the second to third decade of life...
October 19, 2016: European Journal of Dermatology: EJD
https://www.readbyqxmd.com/read/27706140/formation-of-new-chromatin-domains-determines-pathogenicity-of-genomic-duplications
#15
Martin Franke, Daniel M Ibrahim, Guillaume Andrey, Wibke Schwarzer, Verena Heinrich, Robert Schöpflin, Katerina Kraft, Rieke Kempfer, Ivana Jerković, Wing-Lee Chan, Malte Spielmann, Bernd Timmermann, Lars Wittler, Ingo Kurth, Paola Cambiaso, Orsetta Zuffardi, Gunnar Houge, Lindsay Lambie, Francesco Brancati, Ana Pombo, Martin Vingron, Francois Spitz, Stefan Mundlos
Chromosome conformation capture methods have identified subchromosomal structures of higher-order chromatin interactions called topologically associated domains (TADs) that are separated from each other by boundary regions. By subdividing the genome into discrete regulatory units, TADs restrict the contacts that enhancers establish with their target genes. However, the mechanisms that underlie partitioning of the genome into TADs remain poorly understood. Here we show by chromosome conformation capture (capture Hi-C and 4C-seq methods) that genomic duplications in patient cells and genetically modified mice can result in the formation of new chromatin domains (neo-TADs) and that this process determines their molecular pathology...
October 5, 2016: Nature
https://www.readbyqxmd.com/read/27701787/delayed-diagnosis-an-important-prognostic-factor-for-oesophageal-atresia-in-developing-countries
#16
Suleyman Cuneyt Karakus, Bulent Hayri Ozokutan, Unal Bakal, Haluk Ceylan, Mehmet Sarac, Seval Kul, Ahmet Kazez
AIM: The aim of this study is to analyse the effect of delayed diagnosis on mortality rates, and evaluate the role of delayed diagnosis as a new prognostic factor in patients with oesophageal atresia (OA), especially in developing countries. METHODS: The records of 80 consecutive patients with OA (2008-2013) were reviewed. Patients were divided into two groups according to the time of diagnosis. As we demonstrated the effect of delayed diagnosis on mortality, we decided to develop a new classification that will be utilised to predict the prognosis of OA...
October 4, 2016: Journal of Paediatrics and Child Health
https://www.readbyqxmd.com/read/27694096/agminated-spitz-nevus-arising-in-normal-skin-with-redundant-hras-mutation
#17
Julien Pontoizeau, Andrea Stefan, François Comoz, Aurélie Houlier, Véronique Haddad, Daniel Pissaloux, Arnaud de la Fouchardiere
No abstract text is available yet for this article.
September 29, 2016: European Journal of Dermatology: EJD
https://www.readbyqxmd.com/read/27686456/the-utilization-of-spitz-related-nomenclature-in-the-histological-interpretation-of-cutaneous-melanocytic-lesions-by-practicing-pathologists-results-from-the-m-path-study
#18
Ge Zhao, Kachiu C Lee, Sue Peacock, Lisa M Reisch, Stevan R Knezevich, David E Elder, Michael W Piepkorn, Joann G Elmore, Raymond L Barnhill
BACKGROUND: Spitz nevi, atypical Spitz tumors and spitzoid melanomas ('spitzoid lesions') represent controversial and poorly understood cutaneous melanocytic lesions that are difficult to diagnose histologically. It is unknown how these terms are used by pathologists. METHODS: We describe use of Spitz-related terminology using data from the Melanoma Pathology (M-Path) study database comprising pathologists' interpretations of biopsy slides, a nation-wide study evaluating practicing US pathologists' (N = 187) diagnoses of melanocytic lesions (8976 independent diagnostic assessments on 240 total test cases, with 1 slide per case)...
September 30, 2016: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/27678295/phase-ii-study-of-vigil%C3%A2-dna-engineered-immunotherapy-as-maintenance-in-advanced-stage-ovarian-cancer
#19
Jonathan Oh, Minal Barve, Carolyn M Matthews, E Colin Koon, Thomas P Heffernan, Bruce Fine, Elizabeth Grosen, Melanie K Bergman, Evelyn L Fleming, Leslie R DeMars, Loyd West, Daniel L Spitz, Howard Goodman, Kenneth C Hancock, Gladice Wallraven, Padmasini Kumar, Ernest Bognar, Luisa Manning, Beena O Pappen, Ned Adams, Neil Senzer, John Nemunaitis
OBJECTIVES: The majority of women with Stage III/IV ovarian cancer who achieve clinical complete response with frontline standard of care will relapse within 2years. Vigil immunotherapy, a GMCSF/bi-shRNA furin DNA engineered autologous tumor cell (EATC) product, demonstrated safety and induction of circulating activated T-cells against autologous tumor in Phase I trial Senzer et al. (2012, 2013) . Our objectives for this study include evaluation of safety, immune response and recurrence free survival (RFS)...
December 2016: Gynecologic Oncology
https://www.readbyqxmd.com/read/27678206/clinical-and-genetic-investigation-of-a-brazilian-family-with-huntington-s-disease
#20
L A Agostinho, M Spitz, J S Pereira, C L A Paiva
The aim of this study was to investigate a Brazilian family carrying full penetrance alleles for Huntington's disease (HD) in order to correlate each member's genetic and clinical features. To this end, the following scales were administered in each patient: the Beck Depression Inventory, the Mini-Mental State Examination (MMSE) and the Unified Huntington's Disease Rating Scale (UHDRS). The patterns of CAG and CCG polymorphic regions in the HTT gene were determined, the disease burden score was calculated, and genotypes were correlated with phenotypes within this family...
July 2016: Functional Neurology
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