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https://www.readbyqxmd.com/read/28512174/dynamic-changes-in-pd-l1-expression-and-immune-infiltrates-early-during-treatment-predict-response-to-pd-1-blockade-in-melanoma
#1
Ricardo E Vilain, Alexander M Menzies, James S Wilmott, Hojabr Kakavand, Jason Madore, Alexander Guminski, Elizabeth Liniker, Ben Kong, Adam Cooper, Julie R Howle, Robyn P M Saw, Valerie Jakrot, Serigne Lo, John F Thompson, Matteo S Carlino, Richard F Kefford, Georgina V Long, Richard A Scolyer
Disruption of PD-L1/cytotoxic T-cell PD-1 signalling by immune-checkpoint inhibitors improves survival in cancer patients. This study sought to identify changes in tumoral PD-L1 expression and tumor-associated immune cell flux with anti-PD1 therapies in melanoma patients, particularly early during treatment, and correlate them with treatment response<br /><br />Experimental Design: Forty-six tumor biopsies from 23 unresectable AJCC Stage III/IV melanoma patients receiving pembrolizumab/nivolumab were analyzed...
May 16, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28510278/tfg-met-fusion-in-an-infantile-spindle-cell-sarcoma-with-neural-features
#2
Uta Flucke, Max M van Noesel, Marc Wijnen, Lei Zhang, Chun-Liang Chen, Yun-Shao Sung, Cristina R Antonescu
An increasing number of congenital and infantile sarcomas displaying a primitive, monomorphic spindle cell phenotype have been characterized to harbor recurrent gene fusions, including infantile fibrosarcoma and congenital spindle cell rhabdomyosarcoma. Here we report an unusual spindle cell sarcoma presenting as a large and infiltrative pelvic soft tissue mass in a 4-month-old girl, which revealed a novel TFG-MET gene fusion by whole transcriptome RNA sequencing. The tumor resembled the morphology of an infantile fibrosarcoma with both fascicular and patternless growth, however, it expressed strong S100 protein immunoreactivity, while lacking SOX10 staining and retaining H3K27me3 expression...
May 16, 2017: Genes, Chromosomes & Cancer
https://www.readbyqxmd.com/read/28493604/cic-break-apart-fluorescence-in-situ-hybridisation-misses-a-subset-of-cic-dux4-sarcomas-a-clinicopathological-and-molecular-study
#3
Akihiko Yoshida, Yasuhito Arai, Eisuke Kobayashi, Kan Yonemori, Koichi Ogura, Natsuko Hama, Wakako Mukai, Toru Motoi, Akira Kawai, Tatsuhiro Shibata, Nobuyoshi Hiraoka
AIMS: Approximately 60-70% of high-grade round-cell sarcomas that lack the EWSR1 rearrangement harbour a rearrangement of the CIC gene, most commonly CIC-DUX4. Recent studies have established that CIC-rearranged sarcomas constitute a distinct group characterised by recognisable histology and immunoprofiles, such as positivity for ETV4 and WT1 and negativity for NKX2.2. Although these sarcomas are increasingly diagnosed in practice by fluorescence in situ hybridisation (FISH) with CIC break-apart probes, the optimal modality to diagnose these sarcomas has not been determined...
May 11, 2017: Histopathology
https://www.readbyqxmd.com/read/28491094/immunoprofiling-of-adult-derived-human-liver-stem-progenitor-cells-impact-of-hepatogenic-differentiation-and-inflammation
#4
Hoda El-Kehdy, Camillo Sargiacomo, Mohammad Fayyad-Kazan, Hussein Fayyad-Kazan, Catherine Lombard, Laurence Lagneaux, Etienne Sokal, Mehdi Najar, Mustapha Najimi
Adult-derived human liver stem/progenitor cells (ADHLSCs) are, nowadays, developed as therapeutic medicinal product for the treatment of liver defects. In this study, the impact of hepatogenic differentiation and inflammation priming on the ADHLSCs' immune profile was assessed in vitro and compared to that of mature hepatocytes. The constitutive immunological profile of ADHLSCs was greatly different from that of hepatocytes. Differences in the expression of the stromal markers CD90 and CD105, adhesion molecules CD44 and CD49e, immunoregulatory molecules CD73 and HO-1, and NK ligands CD112 and CD155 were noted...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28484662/utility-of-immunohistochemistry-and-etv6-12p13-gene-rearrangement-in-identifying-secretory-carcinoma-of-salivary-gland-among-previously-diagnosed-cases-of-acinic-cell-carcinoma
#5
Rana Naous, Shengle Zhang, Alfredo Valente, Melissa Stemmer, Kamal K Khurana
Objective. Secretory carcinoma is a recently described entity with characteristic immunoprofile and ETV6 (12p13) rearrangement. Before its initial description, it was generally diagnosed as acinic cell carcinoma (ACCi). We evaluated immunoprofile and ETV6 rearrangement in cytological and surgical cases of previously diagnosed ACCi, in an attempt to identify any misclassified SC. Methods. Fifteen cytology and surgical cases of ACCi diagnosed over a 13-year period were retrieved and subjected to immunohistochemistry for S-100, mammaglobin, GATA-3 and DOG-1 as well as FISH for ETV6 (12p13)...
2017: Pathology Research International
https://www.readbyqxmd.com/read/28465620/ivig-regulates-the-survival-of-human-but-not-mouse-neutrophils
#6
Christoph Schneider, Simone Wicki, Stefanie Graeter, Tankica M Timcheva, Christian W Keller, Isaak Quast, Danila Leontyev, Iglika K Djoumerska-Alexieva, Fabian Käsermann, Stephan M Jakob, Petya A Dimitrova, Donald R Branch, Richard D Cummings, Jan D Lünemann, Thomas Kaufmann, Hans-Uwe Simon, Stephan von Gunten
Intravenous immunoglobulin (IVIG) are purified IgG preparations made from the pooled plasma from thousands of healthy donors and are being tested in preclinical mouse models. Inherent challenges, however, are the pluripotency of IVIG and its xenogeneicity in animals. IVIG can alter the viability of human neutrophils via agonistic antibodies to Fas and Siglec-9. In this study, we compared the effects of IVIG on human and mouse neutrophils using different death assays. Different commercial IVIG preparations similarly induced cytokine-dependent death in human neutrophils, whereas they had no effects on the survival of either peripheral blood or bone marrow neutrophils from C57BL/6 or BALB/c mice...
May 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28458825/a-locally-destructive-completely-asymptomatic-c1-root-schwannoma-with-base-of-skull-invasion-a-case-report
#7
David Pisani, Christian Camenzuli, Josephine Psaila, Snežana Božanić, Jean Calleja-Agius
Patients with C1 nerve root schwannomas usually present with signs relating to nerve root compression. However, asymptomatic presentations have never been reported. A healthy, 37-year-old female was referred in view of a slow-growing lump in the left posterosuperior aspect of the neck. The lump was asymptomatic and neurological examination was normal. Magnetic resonance imaging revealed a left C1 nerve root tumour, extending around the C1 vertebra and compressing the thecal sac. The tumour had invaded the basiocciput and was impinging on the left cerebellar hemispheric dura...
February 2017: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/28458787/myoepithelial-carcinoma-of-the-paracecal-mesentery-aggressive-behavior-of-a-rare-neoplasm-at-an-unusual-anatomic-site
#8
Khin Thway, Jonathan Noujaim, D Michael Thomas, Cyril Fisher, Robin L Jones
Myoepithelial tumors of the soft tissues represent a rare group of neoplasms that vary in their clinical behavior, pathologic features and genetics. They are histopathologically typified by a myoepithelial immunohistochemical phenotype, of expression of one or more epithelial markers, S100 protein and smooth muscle actin. Because of their rarity and occurrence over a wide age range and at a variety of anatomic sites, they can be difficult to diagnose due to the lack of familiarity by physicians, which is compounded by their spectrum of histologic features and morphologic overlap with several other neoplasms...
March 24, 2017: Rare Tumors
https://www.readbyqxmd.com/read/28300855/longitudinal-tracking-of-autoantibody-levels-in-a-pemphigus-vulgaris-patient-support-for-a-role-of-anti-desmoglein-1-autoantibodies-as-predictors-of-disease-progression
#9
Nadia Y Abidi, Irene Lainiotis, Gretchen Malikowski, Kristina Seiffert-Sinha, Animesh A Sinha
Anti-desmoglein (Dsg) 1 and -Dsg3 antibody titers have an established role in the diagnosis of the autoimmune blistering skin disease pemphigus vulgaris (PV). However, their usefulness for disease monitoring has been controversial. A recent large-scale immunoprofiling study by our group indicated that anti-Dsg1 levels may be a better predictor of disease activity than anti-Dsg3 levels, with declining levels predicting progression from active phase of disease to early remission, irrespective of lesional subtypes...
February 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28296991/clinicopathologic-immunohistochemical-and-molecular-features-of-histiocytoid-sweet-syndrome
#10
Victoria Alegría-Landa, Socorro María Rodríguez-Pinilla, Angel Santos-Briz, José Luis Rodríguez-Peralto, Victor Alegre, Lorenzo Cerroni, Heinz Kutzner, Luis Requena
Importance: Histiocytoid Sweet syndrome is a rare histopathologic variant of Sweet syndrome. The nature of the histiocytoid infiltrate has generated considerable controversy in the literature. Objective: The main goal of this study was to conduct a comprehensive overview of the immunohistochemical phenotype of the infiltrate in histiocytoid Sweet syndrome. We also analyze whether this variant of Sweet syndrome is more frequently associated with hematologic malignancies than classic Sweet syndrome...
March 15, 2017: JAMA Dermatology
https://www.readbyqxmd.com/read/28286687/lipomatous-extensively-vacuolated-ependymoma-with-signet-ring-cell-like-appearance-analysis-of-a-case-with-extensive-literature-review
#11
Miguel Fdo Salazar, Martha Lilia Tena-Suck, Alma Ortiz-Plata, Citlaltepetl Salinas-Lara, Daniel Rembao-Bojórquez
"Lipomatous" and "extensively vacuolated" are descriptive captions that have been used to portray a curious subset of ependymomas distinctively bearing cells with a large vacuole pushing the nucleus to the periphery and, thus, simulating a signet-ring cell appearance. Here, we would like to report the first ependymoma of this kind in a Latin American institution. A 16-year-old boy experienced cephalea during three months. Magnetic resonance imaging scans showed a left paraventricular tumour which corresponded to anaplastic ependymoma...
2017: Case Reports in Pathology
https://www.readbyqxmd.com/read/28285963/clear-cell-colorectal-carcinoma-time-to-clarify-diagnosis
#12
Andrea Remo, Federica Grillo, Luca Mastracci, Matteo Fassan, Sokol Sina, Caterina Zanella, Pietro Parcesepe, Emanuele Damiano Urso, Massimo Pancione, Germana Bortuzzo, Aldo Scarpa, Erminia Manfrin
Primary clear cell colorectal carcinoma (CCC) is a very rare entity accounting for only 35 cases reported in the Literature. CCC is neither classified as a distinct entity nor is it defined as a CRC variant because its ontogeny remains unclear. Most of the reported CCC were found in the distal colon in patients with a mean age of 56 years. Histologically, clear cell change is the main morphologic feature and may present in a "pure" form, composed exclusively of clear cells, or in a "composite" form, admixed with other morphologically different components...
May 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28285961/immunocytochemical-expression-of-a-panel-of-markers-in-pleural-effusions-from-patients-with-primary-lung-adenocarcinoma
#13
Eleftheria Chaini, Anna-Maria Athanassiadou, Antonis Vassias, Angelos Tsipis, Maria Gonidi, Kyriakos D Hainis, Andrianni Charpidou, Pauline Athanassiadou
INTRODUCTION: This study's principal objective was to evaluate the critical role of the application of immunocytochemistry to a novel panel of diagnostic markers for the accurate detection of the source of malignancies in pleural effusions of lung adenocarcinoma. MATERIALS AND METHODS: In 40 effusion smears from lung adenocarcinoma, the expression of the E-cadherin, a-catenin, Thyroid Transcription Factor (TTF-1), Epidermal Growth Factor Receptor (EGFR), p53, caspase 9 and 3, Bax and Bcl-2 was examined by immunocytochemistry...
February 7, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28261513/primary-clear-cell-microcystic-adenoma-of-the-sinonasal-cavity-pathological-or-fortuitous-association
#14
Rosalin Cooper, Hannah Markham, Jeffery Theaker, Adrian Bateman, David Bunyan, Matthew Sommerlad, Gillian Crawford, Diana Eccles
Primary clear cell microcystic adenoma of the sinonasal cavity is rare. It has previously been described only as a VHL-associated tumour. Von Hippel-Lindau (VHL) syndrome is an inherited cancer syndrome characterised by an elevated risk of neoplasia including clear cell renal cell carcinoma (ccRCC), haemangioblastoma, and phaeochromocytoma. We describe the second reported case of a primary clear cell microcystic adenoma of the sinonasal cavity. The 39-year-old patient with VHL syndrome had previously undergone resection and ablation of ccRCC...
2017: Case Reports in Pathology
https://www.readbyqxmd.com/read/28248726/pax8-positive-biphasic-synovial-sarcoma-expressing-hormonal-receptors
#15
Leonardo Lordello, Martin E Bur, Esther Oliva, Jochen K Lennerz
PAX8, estrogen receptor-α (ERα) and progesterone receptor (PR) are markers usually expressed in neoplasms of müllerian origin. We report a subdiaphragmal mass in a 41-year-old woman corresponding to a malignant biphasic tumor with nests of epithelial-like cells forming variably sized cyst-like spaces alternating with spindle cells forming intersecting fascicles. The later were juxtaposed to coalescent densely cellular nodules of spindle cells with appreciable cytologic atypia and mitotic counts up to 30/10 high-power fields...
February 28, 2017: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/28222333/immunoprofiling-as-a-predictor-of-patient-s-response-to-cancer-therapy-promises-and-challenges
#16
REVIEW
Daniel Bethmann, Zipei Feng, Bernard A Fox
Immune cell infiltration is common to many tumors and has been recognized by pathologists for more than 100 years. The application of digital imaging and objective assessment software allowed a concise determination of the type and quantity of immune cells and their location relative to the tumor and, in the case of colon cancer, characterized overall survival better than AJCC TNM staging. Subsequently, expression of PD-L1, by 50% or more tumor cells, identified NSCLC patients with double the response rate to anti-PD-1...
February 18, 2017: Current Opinion in Immunology
https://www.readbyqxmd.com/read/28210575/cytokeratin-immunoprofile-of-primary-and-metastatic-adenoid-cystic-carcinoma-of-salivary-glands-a-report-of-two-cases
#17
Cibele Pidorodeski Nagano, Cláudia Malheiros Coutinho-Camillo, Clovis Antônio Pinto, Fernando Augusto Soares, Filipa Santos, Isabel Fonseca, Silvia Vanessa Lourenço
Distant metastases from salivary gland tumors are considered infrequent: the incidence of distant metastases ranges from 24% to 61% according to different histotypes and to the site of the primary mass. The most common site of distant metastases due to salivary gland malignancies is the lung. From the pathology point of view, cytokeratins (CK) are important differentiation markers in salivary gland tumors, which are often used for the diagnostic process. Their employment also may be useful to identify and confirm the diagnosis of their distant metastases...
October 2016: Autopsy & case reports
https://www.readbyqxmd.com/read/28208869/mature-cystic-teratoma-with-co-existent-mucinous-cystadenocarcinoma-in-the-same-ovary-a-diagnostic-dilemma
#18
Sanjeet Roy, Sramana Mukhopadhayay, Mayank Gupta, Anuradha Chandramohan
Mature cystic teratoma co-existing with a mucinous cystadenocarcinoma is an infrequently encountered entity with only a handful of cases reported till date. The possibilities in such a case are either a malignant transformation of a benign teratoma into adenocarcinoma or a collision tumor between a mature cystic teratoma and a mucinous tumour of either a primary ovarian surface epithelial-stromal origin or a secondary from a primary gastrointestinal tract tumour. The importance of distinguishing between the two entities has significant bearing on subsequent therapeutic management...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28182064/myofibromatosis-utility-of-fine-needle-aspiration-cytology-in-the-diagnosis-of-an-underreported-entity
#19
Sandhya V Poflee, Anjali N Bode, Sneha Chavarkar, Pradeep S Umap
Myofibromatosis (MFS) was recognized as a distinct form of childhood fibromatosis. Infantile myofibromatosis (IMF) is now identified as a solitary or multicentric tumor that predominantly occurs in neonates and infants. The adult counterpart of IMF, though of rare occurrence, is identified and is known as MFS. Morphological diagnosis of MFS is made by histopathological examination of the biopsy or surgically excised mass and confirmed on the basis of specific immunoprofile. We report a case of multicentric MFS occurring in an adolescent in whom diagnosis was suggested on the basis of fine needle aspiration cytology (FNAC) that avoided surgical excision of multiple nodules...
January 2017: Journal of Cytology
https://www.readbyqxmd.com/read/28172348/arrest-interrogate-an-interactive-immunoprofiler-for-ig-tr-ngs-data
#20
Vojtech Bystry, Tomas Reigl, Adam Krejci, Martin Demko, Barbora Hanakova, Andrea Grioni, Henrik Knecht, Max Schlitt, Peter Dreger, Leopold Sellner, Dietrich Herrmann, Marine Pingeon, Myriam Boudjoghra, Jos Rijntjes, Christiane Pott, Anton W Langerak, Patricia J T A Groenen, Frederic Davi, Monika Brüggemann, Nikos Darzentas
No abstract text is available yet for this article.
February 1, 2017: Bioinformatics
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