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https://www.readbyqxmd.com/read/29778330/lymph-node-metastasis-in-thymic-malignancies-a-chinese-multicenter-prospective-observational-study
#1
Wentao Fang, Yun Wang, Liewen Pang, Zhitao Gu, Yucheng Wei, Yongyu Liu, Peng Zhang, Chun Chen, Xinming Zhou, Yangchun Liu, Keneng Chen, Jianyong Ding, Yongtao Han, Yin Li, Zhentao Yu, Yuan Liu, Jianhua Fu
OBJECTIVES: To study the incidence and pattern of lymph node metastases in thymic malignancies. METHODS: This multicenter prospective observational trial with intentional lymph node dissection was carried out by the Chinese Alliance for Research in Thymomas (ChART). Data on patients with thymic tumors without pretreatment were collected prospectively. Results from this prospective study were then compared with those from a previously reported ChART retrospective study...
April 18, 2018: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29744727/immunohistochemical-biomarkers-in-thyroid-pathology
#2
REVIEW
Zubair Baloch, Ozgur Mete, Sylvia L Asa
The application of immunohistochemistry to the diagnosis of thyroid lesions has increased as new biomarkers have emerged. In this review, we discuss the biomarkers that are critical for accurate diagnosis, prognosis, and management. Immunohistochemical markers are used to confirm that an unusual tumor in the thyroid is indeed of thyroid origin, either of follicular epithelial or C-cell differentiation; the various mimics include nonthyroidal lesions such as parathyroid tumors, paragangliomas, thymic neoplasms, and metastatic malignancies...
May 9, 2018: Endocrine Pathology
https://www.readbyqxmd.com/read/29740957/egfr-exon-20-insertion-mutation-in-advanced-thymic-squamous-cell-carcinoma-response-to-apatinib-and-clinical-outcomes
#3
Su Yudong, Meng Zhaoting, Wang Xinyue, Lin Li, Xu Xiaoyan, Zuo Ran, Chen Jinliang, Chen Peng
Thymic carcinoma (TC) is a rare malignant tumor of the mediastinum with occult onset, rapid development, and poor prognosis. Surgery is the main treatment for early TC, but the majority of patients are diagnosed at Masaoka-Koga stage III or IV with local invasion or distant metastasis. Platinum and anthracyclines are currently considered key components of first-line chemotherapy for advanced TC; however, there are no standard treatment plans for patients who are refractory to first-line and further chemotherapy...
May 8, 2018: Thoracic Cancer
https://www.readbyqxmd.com/read/29707318/the-comparison-of-predictive-factors-regarding-prognoses-and-invasion-of-thymic-neuroendocrine-tumors-preoperatively-and-postoperatively
#4
Dongliang Bian, Mengfan Qi, Junjie Hu, Ye Ning, Feng Zhou, Ke Fei, Peng Zhang
Background: Thymic neuroendocrine tumors (TNT), in the anterior mediastinum, are extremely rare diseases which have significantly poor prognoses. Studies have rarely provided conclusive evidence of the prognostic factors of TNT. Standard therapies have been controversial. Methods: TNT patients (n=173) were enrolled from Surveillance, Epidemiology and End Results database (SEER). Univariate and multivariate analyses were utilized to evaluate predictive factors of prognoses...
March 2018: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29702286/expression-patterns-prognostic-value-and-intratumoral-heterogeneity-of-pd-l1-and-pd-1-in-thymoma-and-thymic-carcinoma
#5
Dwight Owen, Benjamin Chu, Amy M Lehman, Lakshmanan Annamalai, Jennifer H Yearley, Konstantin Shilo, Gregory A Otterson
INTRODUCTION: Thymic epithelial tumors (TET) including thymoma and thymic carcinoma are rare tumors with little data available to guide treatment. Immunotherapy with checkpoint blockade has shown promising activity, but data regarding the expression patterns and prognostic implications of programmed death 1 (PD-1) and its ligand (PD-L1) in TET have yielded conflicting results. Intratumoral heterogeneity of PD-1/L1 expression has been demonstrated in other cancers but has not been described in the TET literature...
April 24, 2018: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/29695275/ectopic-thymoma-in-the-paratracheal-region-of-the-middle-mediastinum-a-rare-case-report-and-literature-review
#6
Toshiki Yajima, Akira Mogi, Kimihiro Shimizu, Takayuki Kosaka, Toshiteru Nagashima, Yoichi Ohtaki, Kai Obayashi, Seshiru Nakazawa, Misaki Iijima, Yuka Yoshida, Junko Hirato, Hiroyuki Kuwano
BACKGROUND: Thymomas generally arise from the thymus in the anterior mediastinum. Ectopic thymomas arising in the middle mediastinum are rare. We present a case of a thymoma arising from the ectopic thymic tissue in the right paratracheal region. CASE PRESENTATION: The patient was a 67-year-old male who underwent an enhanced-computed tomography examination as preoperative staging for colon cancer. A 20-mm nodule in the right paratracheal region was found incidentally...
April 25, 2018: BMC Research Notes
https://www.readbyqxmd.com/read/29678836/tumor-suppressor-bap1-is-essential-for-thymic-development-and-proliferative-responses-of-t-lymphocytes
#7
Teresita L Arenzana, Steve Lianoglou, Akiko Seki, Celine Eidenschenk, Tommy Cheung, Dhaya Seshasayee, Thijs Hagenbeek, Arivazhagan Sambandam, Rajkumar Noubade, Ivan Peng, Justin Lesch, Jason DeVoss, Xiumin Wu, Wyne P Lee, Patrick Caplazi, Joshua Webster, Jinfeng Liu, Victoria C Pham, David Arnott, Jennie R Lill, Zora Modrusan, Anwesha Dey, Sascha Rutz
Loss of function of the nuclear deubiquitinating enzyme BRCA1-associated protein-1 (BAP1) is associated with a wide spectrum of cancers. We report that tamoxifen-induced BAP1 deletion in adult mice resulted in severe thymic atrophy. BAP1 was critical for T cell development at several stages. In the thymus, BAP1 was required for progression through the pre-T cell receptor checkpoint. Peripheral T cells lacking BAP1 demonstrated a defect in homeostatic and antigen-driven expansion. Deletion of BAP1 resulted in suppression of E2F target genes and defects in cell cycle progression, which was dependent on the catalytic activity of BAP1, but did not require its interaction with host cell factor-1 (HCF-1)...
April 20, 2018: Science Immunology
https://www.readbyqxmd.com/read/29661169/rna-seq-reveals-the-existence-of-a-cdkn1c-e2f1-tp53-axis-that-is-altered-in-human-t-cell-lymphoblastic-lymphomas
#8
Pilar López-Nieva, Pablo Fernández-Navarro, Concepción Vaquero-Lorenzo, María Villa-Morales, Osvaldo Graña-Castro, María Ángeles Cobos-Fernández, José Luis López-Lorenzo, Pilar Llamas, Laura González-Sanchez, Isabel Sastre, Marina Pollan, Marcos Malumbres, Javier Santos, José Fernández-Piqueras
BACKGROUND: Precursor T-cell lymphoblastic lymphomas (T-LBL) are rare aggressive hematological malignancies that mainly develop in children. As in other cancers, the loss of cell cycle control plays a prominent role in the pathogenesis in these malignancies that is primarily attributed to loss of CDKN2A (encoding protein p16INK4A). However, the impact of the deregulation of other genes such as CDKN1C, E2F1, and TP53 remains to be clarified. Interestingly, experiments in mouse models have proven that conditional T-cell specific deletion of Cdkn1c gene may induce a differentiation block at the DN3 to DN4 transition, and that the loss of this gene in the absence of Tp53 led to aggressive thymic lymphomas...
April 16, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29613961/mr-imaging-of-thymic-epithelial-neoplasms
#9
Brett W Carter, John P Lichtenberger, Marcelo F Benveniste
Thymic epithelial neoplasms are malignant lesions that originate from the thymus and include thymoma, thymic carcinoma, and thymic neuroendocrine tumors. Although computed tomography (CT) is typically considered the imaging modality of choice for identifying thymic tumors, characterizing the primary neoplasm, and staging of disease, the role of magnetic resonance (MR) imaging continues to expand. MR imaging is effective in distinguishing thymic epithelial neoplasms and other malignant tumors from benign lesions in the prevascular mediastinum, can be used to characterize and stage thymic tumors in those patients with contraindications to contrast-enhanced CT, and can reveal morphologic features of thymic tumors...
April 2018: Topics in Magnetic Resonance Imaging: TMRI
https://www.readbyqxmd.com/read/29562175/generation-of-tumor-antigen-specific-ipsc-derived-thymic-emigrants-using-a-3d-thymic-culture-system
#10
Raul Vizcardo, Nicholas D Klemen, S M Rafiqul Islam, Devikala Gurusamy, Naritaka Tamaoki, Daisuke Yamada, Haruhiko Koseki, Benjamin L Kidder, Zhiya Yu, Li Jia, Amanda N Henning, Meghan L Good, Marta Bosch-Marce, Takuya Maeda, Chengyu Liu, Zied Abdullaev, Svetlana Pack, Douglas C Palmer, David F Stroncek, Fumito Ito, Francis A Flomerfelt, Michael J Kruhlak, Nicholas P Restifo
Induced pluripotent stem cell (iPSC)-derived T cells may provide future therapies for cancer patients, but those generated by current methods, such as the OP9/DLL1 system, have shown abnormalities that pose major barriers for clinical translation. Our data indicate that these iPSC-derived CD8 single-positive T cells are more like CD4+ CD8+ double-positive T cells than mature naive T cells because they display phenotypic markers of developmental arrest and an innate-like phenotype after stimulation. We developed a 3D thymic culture system to avoid these aberrant developmental fates, generating a homogeneous subset of CD8αβ+ antigen-specific T cells, designated iPSC-derived thymic emigrants (iTEs)...
March 20, 2018: Cell Reports
https://www.readbyqxmd.com/read/29559980/next-generation-sequencing-analysis-of-the-human-tcr%C3%AE-%C3%AE-t-cell-repertoire-reveals-shifts-in-v%C3%AE-and-v%C3%AE-usage-in-memory-populations-upon-aging
#11
Martine J Kallemeijn, François G Kavelaars, Michèle Y van der Klift, Ingrid L M Wolvers-Tettero, Peter J M Valk, Jacques J M van Dongen, Anton W Langerak
Immunological aging remodels the immune system at several levels. This has been documented in particular for the T-cell receptor (TCR)αβ+ T-cell compartment, showing reduced naive T-cell outputs and an accumulation of terminally differentiated clonally expanding effector T-cells, leading to increased proneness to autoimmunity and cancer development at older age. Even though TCRαβ+ and TCRγδ+ T-cells follow similar paths of development involving V(D)J-recombination of TCR genes in the thymus, TCRγδ+ T-cells tend to be more subjected to peripheral rather than central selection...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29557524/secretomes-reveal-several-novel-proteins-as-well-as-tgf-%C3%AE-1-as-the-top-upstream-regulator-of-metastatic-process-in-breast-cancer
#12
Nuray Erin, Nur Ogan, Azmi Yerlikaya
PURPOSE: Metastatic breast cancer is resistant to many conventional treatments and novel therapeutic targets are needed. We previously isolated subsets of 4T1 murine breast cancer cells which metastasized to liver (4TLM), brain (4TBM), and heart (4THM). Among these cells, 4TLM is the most aggressive one, demonstrating mesenchymal phenotype. Here we compared secreted proteins from 4TLM, 4TBM, and 4THM cells and compared with that of hardly metastatic 67NR cells to detect differentially secreted factors involved in organ-specific metastasis...
March 20, 2018: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29550202/incidental-detection-of-basaloid-thymic-carcinoma-with-68-ga-psma-11-pet-ct-in-a-patient-with-recurrent-prostate-cancer
#13
Andrea Farolfi, Francesco Ceci, Tiziano Graziani, Alessandro Lambertini, Veronica Cervati, Gian Luca Basilico, Tullio Biraghi, Alberto Briganti, Paolo Castellucci, Stefano Fanti
No abstract text is available yet for this article.
February 23, 2018: Clinical Genitourinary Cancer
https://www.readbyqxmd.com/read/29522649/integrity-of-ikk-nf-%C3%AE%C2%BAb-shields-thymic-stroma-that-suppresses-susceptibility-to-autoimmunity-fungal-infection-and-carcinogenesis
#14
Feng Zhu, Yinling Hu
A pathogenic connection between autoreactive T cells, fungal infection, and carcinogenesis has been demonstrated in studies of human autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy (APECED) as well as in a mouse model in which kinase-dead Ikkα knock-in mice develop impaired central tolerance, autoreactive T cell-mediated autoimmunity, chronic fungal infection, and esophageal squamous cell carcinoma, which recapitulates APECED. IκB kinase α (IKKα) is one subunit of the IKK complex required for NF-κB activation...
April 2018: BioEssays: News and Reviews in Molecular, Cellular and Developmental Biology
https://www.readbyqxmd.com/read/29480761/eighth-edition-staging-of-thoracic-malignancies-implications-for-the-reporting-pathologist
#15
Andrew G Nicholson, Ming S Tsao, William D Travis, Deepa T Patil, Francoise Galateau-Salle, Mirella Marino, Sanja Dacic, Mary Beth Beasley, Kelly J Butnor, Yasushi Yatabe, Harvey I Pass, Valerie W Rusch, Frank C Detterbeck, Hisao Asamura, Thomas W Rice, Ramon Rami-Porta
Context The Staging and Prognostic Factors Committee of the International Association for the Study of Lung Cancer, in conjunction with the International Mesothelioma Interest Group, the International Thymic Malignancy Interest Group, and the Worldwide Esophageal Cancer Collaboration, developed proposals for the 8th edition of their respective tumor, node, metastasis (TNM) staging classification systems. Objective To review these changes and discuss issues for the reporting pathologist. Data Sources Proposals were based on international databases of lung (N = 94 708), with an external validation using the US National Cancer Database; mesothelioma (N = 3519); thymic epithelial tumors (10 808); and epithelial cancers of the esophagus and esophagogastric junction (N = 22 654)...
May 2018: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/29467945/a-comparative-study-of-pd-l1-immunohistochemical-assays-with-four-reliable-antibodies-in-thymic-carcinoma
#16
Tadashi Sakane, Takayuki Murase, Katsuhiro Okuda, Hisashi Takino, Ayako Masaki, Risa Oda, Takuya Watanabe, Osamu Kawano, Hiroshi Haneda, Satoru Moriyama, Yushi Saito, Takeshi Yamada, Ryoichi Nakanishi, Hiroshi Inagaki
Currently, four immunohistochemical assays are registered with the US Food and Drug Administration to detect the expression of PD-L1. We investigated the PD-L1 expression in thymic carcinomas using these four diagnostic assays. The cases of 53 patients were reviewed and their specimens were subjected to four PD-L1 assays with different antibodies (SP142, SP263, 22C3, and 28-8). The PD-L1 expression in tumor cells (TCs) and immune cells (ICs) was evaluated. In TCs, the four assays showed similar scores in each case...
January 23, 2018: Oncotarget
https://www.readbyqxmd.com/read/29458221/thyroid-stimulating-hormone-stimulated-human-adipocytes-express-thymic-stromal-lymphopoietin
#17
Loretta Ma, AnneMarie Gagnon, Anne Landry, Timothea Le, Fengxia Xiao, Cathy Sun, Heather A Lochnan, Dylan Burger, Alexander Sorisky
When recombinant human (rh) thyroid-stimulating hormone (TSH) is administered to thyroid cancer survivors, an acute extra-thyroidal effect raises pro-inflammatory cytokines and activates platelets. Thymic stromal lymphopoietin (TSLP) is a cytokine recently implicated in platelet activation. Our aim was to measure platelet microparticle levels after rhTSH stimulation in vivo, and to investigate TSLP expression in TSH-stimulated human adipocytes in culture. Blood samples for total and platelet microparticle analysis were obtained from thyroid cancer survivors before (day 1) and after rhTSH administration (day 5)...
April 2018: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/29455734/bamboo-salt-suppresses-skin-inflammation-in-mice-with-2-4-dinitrofluorobenzene-induced-atopic-dermatitis
#18
Myoung-Schook Yoou, Sun-Young Nam, Kyoung Wan Yoon, Hyun-Ja Jeong, Hyung-Min Kim
Bamboo salt (BS) is a traditional Korean food, and has been reported to have anti-cancer, anti-inflammatory, and anti-metastatic effects. However, the anti-atopic dermatitis (AD) activity of BS has not been described yet. In the present study, we examined the preventive effect of BS on AD. The effect of oral administration of BS was tested in a 2, 4-dinitrofluorobenzene (DNFB)-induced AD animal model, by histological analysis, enzyme-linked immunosorbent assay, reverse transcription-polymerase chain reaction, caspase-1 assay, and Western blotting analysis...
February 2018: Chinese Journal of Natural Medicines
https://www.readbyqxmd.com/read/29455318/expression-of-terminal-deoxynucleotidyl-transferase-tdt-in-classical-seminoma-a-potential-diagnostic-pitfall
#19
Alexander Brobeil, Florian Wagenlehner, Stefan Gattenlöhner
Seminomas are the most frequent testicular tumors and in spite of specific markers some histological subtypes can be diagnostically challenging due to the potential overlap of morphologic features and a variant antigen expression. Terminal deoxynucleotidyl transferase (TdT) is a DNA polymerase present in hematogones, thymic T cells, lymphoblastic lymphoma/leukemia (LBL), and in some cases of acute myeloid leukemia but so far has not been described to be expressed in seminomas. After observing a reactivity of TdT in one case of seminoma, we analyzed ten additional tumors by immunohistochemistry to determine their spectrum of reactivity for TdT...
March 2018: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/29438696/the-integrated-genomic-landscape-of-thymic-epithelial-tumors
#20
Milan Radovich, Curtis R Pickering, Ina Felau, Gavin Ha, Hailei Zhang, Heejoon Jo, Katherine A Hoadley, Pavana Anur, Jiexin Zhang, Mike McLellan, Reanne Bowlby, Thomas Matthew, Ludmila Danilova, Apurva M Hegde, Jaegil Kim, Mark D M Leiserson, Geetika Sethi, Charles Lu, Michael Ryan, Xiaoping Su, Andrew D Cherniack, Gordon Robertson, Rehan Akbani, Paul Spellman, John N Weinstein, D Neil Hayes, Ben Raphael, Tara Lichtenberg, Kristen Leraas, Jean Claude Zenklusen, Junya Fujimoto, Cristovam Scapulatempo-Neto, Andre L Moreira, David Hwang, James Huang, Mirella Marino, Robert Korst, Giuseppe Giaccone, Yesim Gokmen-Polar, Sunil Badve, Arun Rajan, Philipp Ströbel, Nicolas Girard, Ming S Tsao, Alexander Marx, Anne S Tsao, Patrick J Loehrer
Thymic epithelial tumors (TETs) are one of the rarest adult malignancies. Among TETs, thymoma is the most predominant, characterized by a unique association with autoimmune diseases, followed by thymic carcinoma, which is less common but more clinically aggressive. Using multi-platform omics analyses on 117 TETs, we define four subtypes of these tumors defined by genomic hallmarks and an association with survival and World Health Organization histological subtype. We further demonstrate a marked prevalence of a thymoma-specific mutated oncogene, GTF2I, and explore its biological effects on multi-platform analysis...
February 12, 2018: Cancer Cell
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