keyword
MENU ▼
Read by QxMD icon Read
search

Spitz

keyword
https://www.readbyqxmd.com/read/29649787/defective-protein-repair-under-methionine-sulfoxide-a-deletion-drives-autophagy-and-are-dependent-gene-transcription
#1
Steven M Pennington, Paula R Klutho, Litao Xie, Kim Broadhurst, Olha M Koval, Michael L McCormick, Douglas R Spitz, Isabella M Grumbach
OBJECTIVE: Reduction of oxidized methionines is emerging as a major protein repair pathway. The lack of methionine sulfoxide reductase A (MsrA) exacerbates cardiovascular disease phenotypes driven by increased oxidative stress. However, the role of MsrA on maintaining cellular homeostasis in the absence of excessive oxidative stress is less well understood. METHODS AND RESULTS: Constitutive genetic deletion of MsrA increased formation of p62-containing protein aggregates, activated autophagy, and decreased a marker of apoptosis in vascular smooth muscle cells (VSMC)...
April 3, 2018: Redox Biology
https://www.readbyqxmd.com/read/29623743/immunoexpression-of-bap1-ros1-and-alk-in-spitzoid-melanocytic-tumors
#2
Leonardo Cardili, Cristiano Ribeiro Viana, Andressa Germano, Mariana Fernandes, Denise Barcellos, Gilles Landman
BACKGROUND: Spitzoid tumors are a heterogeneous group of melanocytic neoplasms that frequently imposes diagnostic difficulties. Lately, several advances in molecular biology afforded significant discoveries on the pathogenesis of these tumors. BAP1 (BRCA-1 associated protein-1) inactivation and anomalous expression of kinase translocation-related proteins are among the main criteria launched by new classification proposals. Our aim was to systematically assess the immunoexpression of BAP1, ROS1 (receptor tyrosine kinase c-Ros oncogene 1), and ALK (anaplastic lymphoma receptor tyrosine kinase) proteins in an unpublished series of spitzoid tumors...
April 1, 2018: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29607755/common-and-not-so-common-melanocytic-lesions-in-children-and-adolescents
#3
Chen Yang, Alejandro A Gru, Louis P Dehner
The acquired melanocytic nevus is the most common lesion encountered by pediatric pathologists and dermatopathologists in their daily practice. In most cases, there are few difficulties in histopathologic diagnosis. However, it is the acquired melanocytic lesion known as the Spitz nevus, with its intrinsic atypical features which becomes the challenge since it exists along a histopathologic and biologic continuum from the atypical Spitz tumor to spitzoid melanoma. The frustration with some of these spitzoid lesions is that even the "experts" cannot agree as to the differentiation of one from the other even at the level of molecular genetics...
March 2018: Pediatric and Developmental Pathology
https://www.readbyqxmd.com/read/29590630/two-differential-binding-mechanisms-of-fg-nucleoporins-and-nuclear-transport-receptors
#4
Piau Siong Tan, Iker Valle Aramburu, Davide Mercadante, Swati Tyagi, Aritra Chowdhury, Daniel Spitz, Sarah L Shammas, Frauke Gräter, Edward A Lemke
Phenylalanine-glycine-rich nucleoporins (FG-Nups) are intrinsically disordered proteins, constituting the selective barrier of the nuclear pore complex (NPC). Previous studies showed that nuclear transport receptors (NTRs) were found to interact with FG-Nups by forming an "archetypal-fuzzy" complex through the rapid formation and breakage of interactions with many individual FG motifs. Here, we use single-molecule studies combined with atomistic simulations to show that, in sharp contrast, FG-Nup214 undergoes a coupled reconfiguration-binding mechanism when interacting with the export receptor CRM1...
March 27, 2018: Cell Reports
https://www.readbyqxmd.com/read/29582459/angiomatoid-and-desmoplastic-spitz-nevus-presenting-as-a-keloidal-nodule
#5
JiaDe Yu, Melinda V Jen, Albert C Yan, Rosalie Elenitsas, Adam I Rubin
Angiomatoid and desmoplastic Spitz nevi are rare histologic variants of Spitz nevi that present most frequently on the extremities of children and young adults. Although Spitz nevi are clinically heterogeneous, one presenting as a keloidal nodule has not been previously published. We present a case of an angiomatoid and desmoplastic Spitz nevus clinically akin to a keloid on an African-American teenager and describe its unique histopathologic features.
March 26, 2018: Pediatric Dermatology
https://www.readbyqxmd.com/read/29572252/functional-and-clinical-relevance-of-novel-mutations-in-a-large-cohort-of-patients-with-cockayne-syndrome
#6
Nadege Calmels, Elena Botta, Nan Jia, Heather Fawcett, Tiziana Nardo, Yuka Nakazawa, Manuela Lanzafame, Shinichi Moriwaki, Katsuo Sugita, Masaya Kubota, Cathy Obringer, Marie-Aude Spitz, Miria Stefanini, Vincent Laugel, Donata Orioli, Tomoo Ogi, Alan Robert Lehmann
BACKGROUND: Cockayne syndrome (CS) is a rare, autosomal recessive multisystem disorder characterised by prenatal or postnatal growth failure, progressive neurological dysfunction, ocular and skeletal abnormalities and premature ageing. About half of the patients with symptoms diagnostic for CS show cutaneous photosensitivity and an abnormal cellular response to UV light due to mutations in either the ERCC8 / CSA or ERCC6 / CSB gene. Studies performed thus far have failed to delineate clear genotype-phenotype relationships...
March 23, 2018: Journal of Medical Genetics
https://www.readbyqxmd.com/read/29565696/an-investigation-of-white-matter-integrity-and-attention-deficits-following-traumatic-brain-injury
#7
Jacqueline Anne Owens, Gershon Spitz, Jennie Louise Ponsford, Alicia Rhian Dymowski, Catherine Willmott
OBJECTIVE: This study aimed to investigate the association between white matter tracts and multiple aspects of attention and working memory deficits in a relatively acute traumatic brain injury (TBI) sample. METHOD: Neuropsychological measures of attention and working memory were administered to 20 participants with complicated mild-to-very severe TBI and 20 control participants. Tract-based spatial statistics was used to assess fractional anisotropy (FA) and mean diffusivity (MD) of white matter tracts for 15 TBI participants and 20 controls...
March 22, 2018: Brain Injury: [BI]
https://www.readbyqxmd.com/read/29547353/pharmacological-ascorbate-as-an-adjuvant-for-enhancing-radiation-chemotherapy-responses-in-gastric-adenocarcinoma
#8
Brianne R O'Leary, Frederick K Houwen, Chase L Johnson, Bryan G Allen, James J Mezhir, Daniel J Berg, Joseph J Cullen, Douglas R Spitz
Gastric adenocarcinoma most often presents at an advanced stage and overall five-year survival of ∼30%. Pharmacological ascorbate (high-dose IV ascorbate) has been proposed as a promising nontoxic adjuvant to standard radio-chemotherapies in several cancer types. In the current study, pharmacological ascorbate (0.5-2 m M) caused a dose-dependent decrease (70-85% at 2 m M) in clonogenic survival of gastric adenocarcinoma cells (AGS and MNK-45), but was relatively nontoxic to a small intestinal epithelial nonimmortalized human cell isolate (FHs 74 Int)...
March 16, 2018: Radiation Research
https://www.readbyqxmd.com/read/29537991/acral-spitz-nevi-a-clinicopathologic-study-of-50-cases-with-immunohistochemical-analysis-of-p16-and-p21-expression
#9
Katharina Wiedemeyer, Antonio Guadagno, Jonathan Davey, Thomas Brenn
Spitz nevi on acral sites are rare and poorly documented. The combination of Spitzoid cytomorphology and atypical architectural features of the junctional component may lead to an erroneous diagnosis of melanoma. To study the clinicopthologic and immunohistochemical features, 50 Spitz nevi localized on the distal extremities were retrieved from departmental files. Clinical data and follow-up were obtained and the histologic features were analyzed. P16 and P21 immunohistochemical staining of the dermal component was compared with that of 10 acral lentiginous melanomas and 10 acral nevi...
March 13, 2018: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29533278/rare-variant-of-agminated-spitz-nevi-on-a-hypopigmented-background-and-segmental-distribution-case-report-and-review-of-literature
#10
Oscar W Nevares-Pomales, Osward Y Carrasquillo, Marely Santiago-Vazquez, Francisco Colon-Fontanez
Spitz nevus is a type of melanocytic nevus that can arise as a solitary lesion or as multiple lesions either disseminated or agminated (grouped) in different skin backgrounds (eg, grossly normal, hyperpigmented, or hypopigmented). Agminated Spitz nevi have been rarely reported and are even rarer in a background of hypopigmented skin. We present the case of a 2-month-old girl with multiple, grouped, dome-shaped, red papules arising on a hypopigmented patch with a segmental distribution. Biopsy of 2 lesions showed findings characteristic of Spitz nevus, confirming the diagnosis...
February 27, 2018: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/29520951/decreasing-alt-donor-site-morbidity-with-the-keystone-flap
#11
Sergey Y Turin, Jamie A Spitz, Karina Alexander, Marco F Ellis
BACKGROUND: The anterolateral thigh (ALT) flap is a workhorse flap for a variety of wounds. The primary disadvantage of ALT flaps is donor site morbidity associated with large skin paddle defects. We present a strategy of managing the donor site with the Keystone flap to avoid skin grafts in cases where primary closure is not possible. METHODS: A retrospective, multi-institutional review from December 2015 to March 2017 based on a single surgeon's experience was performed...
March 9, 2018: Microsurgery
https://www.readbyqxmd.com/read/29514107/a-case-report-of-atypical-spitz-tumor-harboring-a-novel-mlph-alk-gene-fusion-with-discordant-alk-immunohistochemistry-results
#12
Masakazu Fujimoto, Yuki Togashi, Ibu Matsuzaki, Satoko Baba, Kengo Takeuchi, Yutaka Inaba, Masatoshi Jinnin, Shin-Ichi Murata
Frequent kinase fusions have been reported in spitzoid neoplasms, approximately 10% of which involve ALK rearrangements. Herein, we report a case of atypical Spitz tumour (AST) with a novel MLPH-ALK fusion, which has not been previously reported to contribute to cancer development. The tumour was detected in the right arm of a 40-year-old woman. The novel ALK fusion was identified by a 5'-rapid amplification of cDNA ends-based system optimised for formalin-fixed paraffin-embedded tissue. Initially, ALK expression was detected by immunohistochemistry (IHC) using 5A4 antibodies for both sensitive and conventional polymer detection method...
March 4, 2018: Human Pathology
https://www.readbyqxmd.com/read/29489509/the-amount-of-melanin-influences-p16-loss-in-spitzoid-melanocytic-lesions-correlation-with-cdkn2a-status-by-fish-and-mlpa
#13
Carolina Martinez Ciarpaglini, Jose Gonzalez, Beatriz Sanchez, Jaime Agusti, Lara Navarro, Gema Nieto, Carlos Monteagudo
AIMS: The risk assessment of spitzoid lesions is one of the most difficult challenges in dermatopathology practice. In this regard, the loss of p16 expression and the homozygous deletion of CDKN2A, have been pointed in the literature as reliable indicators of high risk. However, these findings are poorly reproducible, and the molecular bases underlying the loss of p16 expression remain unclear. We aimed to identify the underlying events causing loss of CDKN2A/p16 in spitzoid tumors. MATERIALS AND METHODS: We evaluated the immunohistochemical expression of p16, and the presence of CDKN2A genetic alterations detected through fluorescence in situ hybridization (FISH) and multiplex ligation-dependent probe amplification (MLPA), in a series of 130 Spitz nevi, 20 atypical spitzoid tumors, and 11 spitzoid melanoma...
February 27, 2018: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/29457789/a-common-variant-alters-scn5a-mir-24-interaction-and-associates-with-heart-failure-mortality
#14
Xiaoming Zhang, Jin-Young Yoon, Michael Morley, Jared M McLendon, Kranti A Mapuskar, Rebecca Gutmann, Haider Mehdi, Heather L Bloom, Samuel C Dudley, Patrick T Ellinor, Alaa A Shalaby, Raul Weiss, W H Wilson Tang, Christine S Moravec, Madhurmeet Singh, Anne L Taylor, Clyde W Yancy, Arthur M Feldman, Dennis M McNamara, Kaikobad Irani, Douglas R Spitz, Patrick Breheny, Kenneth B Margulies, Barry London, Ryan L Boudreau
SCN5A encodes the voltage-gated Na+ channel NaV1.5 that is responsible for depolarization of the cardiac action potential and rapid intercellular conduction. Mutations disrupting the SCN5A coding sequence cause inherited arrhythmias and cardiomyopathy, and single-nucleotide polymorphisms (SNPs) linked to SCN5A splicing, localization, and function associate with heart failure-related sudden cardiac death. However, the clinical relevance of SNPs that modulate SCN5A expression levels remains understudied. We recently generated a transcriptome-wide map of microRNA (miR) binding sites in human heart, evaluated their overlap with common SNPs, and identified a synonymous SNP (rs1805126) adjacent to a miR-24 site within the SCN5A coding sequence...
March 1, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29447232/hepatitis-b-virus-genotypes-a1-a2-and-e-in-cape-verde-unequal-distribution-through-the-islands-and-association-with-human-flows
#15
Isabel Inês M de Pina-Araujo, Natalia Spitz, Caroline C Soares, Christian Niel, Barbara V Lago, Selma A Gomes
Hepatitis B virus (HBV) diversity has not been previously studied in Cape Verde. The archipelago was discovered in 1460 by Portuguese explorers, who brought African slaves to colonise the islands. In this study, we investigated the HBV characteristics from 183 HBsAg-positive Cape Verdean individuals. Phylogenetic analysis of the pre-S/S region and the full-length genomes revealed 54 isolates with HBV/A1 (57%), 21 with HBV/A2 (22%), 19 with HBV/E (20%), and one with HBV/D (1%). HBV genotypes and subgenotypes were unequally distributed through the islands...
2018: PloS One
https://www.readbyqxmd.com/read/29417221/reevaluation-of-established-and-new-criteria-in-differential-diagnosis-of-spitz-nevus-and-melanoma
#16
A Ritter, M Tronnier, B Vaske, C Mitteldorf
The histopathologic differentiation between Spitz nevus and melanoma is of particular interest in routine diagnostic procedures of melanocytic tumors. Atypical Spitz nevi are sometimes difficult to distinguish from melanoma. There is still no single criterion that ensures a distinction of melanoma and atypical Spitz nevus. The aim of this study was to reevaluate established and new criteria to differentiate Spitz nevus from melanoma more reliably. We analyzed 25 melanomas with a Breslow index ≥ 1 mm and 18 classical compound Spitz nevi concerning their histopathologic, immunohistochemical and molecular genetic characteristics...
February 7, 2018: Archives of Dermatological Research
https://www.readbyqxmd.com/read/29406066/the-current-state-of-telemedicine-in-urology
#17
REVIEW
Adam Miller, Eugene Rhee, Matthew Gettman, Aaron Spitz
Telemedicine use in urology is an evolving practice. In this article, the authors review the early experience of telemedicine specifically as it relates to urologic practice and discuss the future implications and the utility of telemedicine as it applies to other fields.
March 2018: Medical Clinics of North America
https://www.readbyqxmd.com/read/29405264/agminated-spitz-naevi-or-metastatic-spitzoid-melanoma
#18
Marloes Sophia van Kester, Celine Eggen, Auke Beishuizen, Nicole Ariane Kukutsch
No abstract text is available yet for this article.
February 5, 2018: Australasian Journal of Dermatology
https://www.readbyqxmd.com/read/29372015/training-the-next-generation-of-psychotraumatologists-collaborative-network-for-training-and-excellence-in-psychotraumatology-context
#19
Frédérique Vallières, Philip Hyland, Jamie Murphy, Maj Hansen, Mark Shevlin, Ask Elklit, Ruth Ceannt, Cherie Armour, Nana Wiedemann, Mette Munk, Cecilie Dinesen, Geraldine O'Hare, Twylla Cunningham, Ditte Askerod, Pernille Spitz, Noeline Blackwell, Angela McCarthy, Leonie O'Dowd, Shirley Scott, Tracey Reid, Andreas Mokake, Rory Halpin, Camila Perera, Christina Gleeson, Rachel Frost, Natalie Flanagan, Kinan Aldamman, Trina Tamrakar, Maria Louison Vang, Larissa Sherwood, Áine Travers, Ida Haahr-Pedersen, Catherine Walshe, Tracey McDonagh, Rikke Holm Bramsen
In this paper we present a description of the Horizon2020, Marie Skłodowska-Curie Action funded, research and training programme CONTEXT: COllaborative Network for Training and EXcellence in psychoTraumatology. The three objectives of the programme are put forward, each of which refers to a key component of the CONTEXT programme. First, we summarize the 12 individual research projects that will take place across three priority populations: (i) refugees and asylum seekers, (ii) first responders, and (iii) perpetrators and survivors of childhood and gender-based violence...
2018: European Journal of Psychotraumatology
https://www.readbyqxmd.com/read/29351198/superoxide-dismutase-mimetic-gc4419-enhances-the-oxidation-of-pharmacological-ascorbate-and-its-anticancer-effects-in-an-h%C3%A2-o%C3%A2-dependent-manner
#20
Collin D Heer, Andrew B Davis, David B Riffe, Brett A Wagner, Kelly C Falls, Bryan G Allen, Garry R Buettner, Robert A Beardsley, Dennis P Riley, Douglas R Spitz
Lung cancer, together with head and neck cancer, accounts for more than one-fourth of cancer deaths worldwide. New, non-toxic therapeutic approaches are needed. High-dose IV vitamin C (aka, pharmacological ascorbate; P-AscH- ) represents a promising adjuvant to radiochemotherapy that exerts its anti-cancer effects via metal-catalyzed oxidation to form H₂O₂. Mn(III)-porphyrins possessing superoxide dismutase (SOD) mimetic activity have been shown to increase the rate of oxidation of AscH- , enhancing the anti-tumor effects of AscH- in several cancer types...
January 19, 2018: Antioxidants (Basel, Switzerland)
keyword
keyword
15709
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"