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Plasmacytoma

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https://www.readbyqxmd.com/read/29156724/lncrna-pvt1-and-its-splicing-variant-function-as-competing-endogenous-rna-to-regulate-clear-cell-renal-cell-carcinoma-progression
#1
Tao Yang, Hui Zhou, Peijun Liu, Libin Yan, Weimin Yao, Ke Chen, Jin Zeng, Heng Li, Junhui Hu, Hua Xu, Zhangqun Ye
Long non-coding RNAs (lncRNAs) exert critical regulatory roles in the development and progression of several cancers. Plasmacytoma variant translocation 1 (PVT1), an lncRNA, was shown to be upregulated in clear cell renal cell carcinoma (ccRCC) in our study, while Kaplan-Meier curve and Cox regression analysis showed that high expression of PVT1 was associated with poor overall survival (OS) and disease free survival (DFS) in ccRCC patients. In vitro experiments revealed that PVT1 promoted renal cancer cell proliferation, migration, and invasion, while in vivo studies confirmed its oncogenic roles in ccRCC...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29153038/a-divergent-pseudoglandular-configuration-of-cutaneous-plasmacytoma-in-dogs
#2
Brittany McHale, Uriel Blas-Machado, Fabiano N Oliveira, Daniel R Rissi
Cutaneous and mucocutaneous plasmacytoma (PCT) is a common neoplasm of dogs. Tumors can be single or multiple and occur predominantly in the oral cavity, lip, ears, digits, and trunk. Although these tumors typically offer no diagnostic challenge for the pathologist, subsets of PCTs with atypical morphologic configurations may make differentiation from other neoplasms difficult. We describe 6 cases of canine cutaneous and mucocutaneous PCT with pseudoglandular arrangement of neoplastic cells. The mean age of affected dogs was 11...
November 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/29151530/successful-autologous-hematopoietic-stem-cell-transplantation-followed-by-bortezomib-maintenance-in-a-patient-with-relapsed-cd138-low-multiple-solitary-plasmacytomas-harboring-a-17p-deletion
#3
Hiroaki Kitamura, Yasushi Kubota, Kyosuke Yamaguchi, Kazuharu Kamachi, Atsujiro Nishioka, Masako Yokoo, Takero Shindo, Toshihiko Ando, Kensuke Kojima, Shinya Kimura
Solitary plasmacytoma of bone (SBP) tends to progress to multiple myeloma (MM); however, progression to multiple solitary plasmacytomas (MSP) is rare. We report a case of CD138-low MSP with 17p deletion in a patient with relapsed SBP. 17p deletion is associated with a poor outcome in patients with MM, and the low expression of CD138 in myeloma cells is associated with drug resistance and a poor prognosis. The patient was successfully treated with bortezomib plus dexamethasone induction therapy and autologous hematopoietic stem cell transplantation followed by bortezomib maintenance therapy...
November 20, 2017: Internal Medicine
https://www.readbyqxmd.com/read/29144100/extramedullary-metastatic-plasmacytoma-in-a-multiple-myeloma-patient
#4
Alessandro Pileri, Elena Zamagni, Claudio Agostinelli, Paola Tacchetti, Miriam Leuzzi, Michele Cavo, Annalisa Patrizi
No abstract text is available yet for this article.
November 16, 2017: Giornale Italiano di Dermatologia e Venereologia: Organo Ufficiale, Società Italiana di Dermatologia e Sifilografia
https://www.readbyqxmd.com/read/29142463/management-of-extramedullary-plasmacytoma-role-of-radiotherapy-and-prognostic-factor-analysis-in-55-patients
#5
Ge Wen, Weihu Wang, Yujing Zhang, Shaoqing Niu, Qiwen Li, Yexiong Li
Objective: To investigate potential prognostic factors affecting patient outcomes and to evaluate the optimal methods and effects of radiotherapy (RT) in the management of extramedullary plasmacytoma (EMP). Methods: Data from 55 patients with EMP between November 1999 and August 2015 were collected. The median age was 51 (range, 22-77) years. The median tumor size was 3.5 (range, 1.0-15.0) cm. The median applied dose was 50.0 (range, 30.0-70.0) Gy. Thirty-nine patients (70...
October 2017: Chinese Journal of Cancer Research, Chung-kuo Yen Cheng Yen Chiu
https://www.readbyqxmd.com/read/29133127/knockdown-of-lncrna-pvt1-inhibits-tumorigenesis-in-non-small-cell-lung-cancer-by-regulating-mir-497-expression
#6
Dong Guo, Yanli Wang, Kewei Ren, Xinwei Han
Plasmacytoma variant translocation1 (PVT1) was reported to be upregulated in non-small-cell lung cancer (NSCLC) tissues, serve as a promising biomarker for diagnosis and prognosis of NSCLC, and promoted NSCLC cell proliferation. However, the detailed molecular mechanism of PVT1 involved in the pathogenesis and development of NSCLC remains largely unknown. In this study, the expression levels of PVT1 and miR-497 in NSCLC cells were determined by qRT-PCR. Cell viability, invasion and apoptosis were detected by MTT assay, cell invasion assay and flow cytometry analysis, respectively...
November 10, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/29123526/toll-like-receptor-ligands-and-interferon-%C3%AE-synergize-for-induction-of-antitumor-m1-macrophages
#7
Elisabeth Müller, Panagiotis F Christopoulos, Sanjib Halder, Anna Lunde, Kahsai Beraki, Martin Speth, Inger Øynebråten, Alexandre Corthay
Tumor-associated macrophages may either promote or suppress tumor growth depending on their activation status. Interferon-γ (IFN-γ) has been identified as a key factor for inducing tumoricidal M1 phenotype in macrophages. However, it remains unclear whether IFN-γ is sufficient or if additional stimuli are required. Here, we tested IFN-γ and a panel of toll-like receptor (TLR) agonists for the ability to activate murine macrophages toward a tumoricidal M1 phenotype. The following TLR ligands were used: TLR1/TLR2 agonist Pam3CSK4, TLR2/TLR6 agonist lipotechoic acid, TLR3 agonist poly(I:C), TLR4 agonist lipopolysaccharide (LPS), TLR5 agonist flagellin, TLR7 agonist CL264, and TLR9 agonist CpG...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29114293/solitary-giant-extradural-plasmacytoma
#8
H Raghavendra, M Dilip Kumar, Manas Panigraghi, Shailaja M Reddy
Solitary plasmacytoma of the skull is very rare, and only a few cases have been reported in the literature. It remains controversial whether solitary plasmacytoma of the skull is essentially identical with solitary plasmacytoma of bone or not. Solitary plasmacytoma of bone including solitary plasmacytoma of the skull is characterized by a radiologically solitary bone lesion, neoplastic plasma cells in the biopsy specimen, fewer than 5% plasma cells in bone marrow, <2.0 g/dl monoclonal protein in the serum when present and negative urine test for Bence Jones protein (monoclonal light chain)...
October 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/29100675/skull-base-plasmacytoma-a-unique-case-of-poems-syndrome-with-a-plasmacytoma-causing-craniocervical-instability
#9
Hannah Gilder, Meghan E Murphy, Mohammed Ali Alvi, Panagiotis Kerezoudis, Daniel Shepherd, Patrick R Maloney, Michael J Yaszemski, Jonathan M Morris, Angela Dispenzieri, Jane M Matsumoto, Mohamad Bydon
INTRODUCTION: Plasmacytomas, considered to be the solitary counterparts of multiple myeloma, are neoplastic monoclonal plasma cell proliferations within soft tissue or bone. Plasmacytomas often present as a collection of findings known as POEMS-syndrome (Polyneuropathy, Organomegaly, Endocrinopathy, M-Protein spike, and Skin changes). CASE DESCRIPTION: We present a report of a 47 yo male diagnosed with POEMS-syndrome secondary to a skull base plasmacytoma. The mass resulted in marked instability of the cranio-cervical junction due to bony erosion...
October 31, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29100365/the-value-of-detecting-immunoglobulin-gene-rearrangements-in-the-diagnosis-of-b-cell-lymphoma
#10
Can Lu, QiuYan He, Wei Zhu, ChunYan Fu, JianHua Zhou, YongGuang Tao, Shuang Liu, DeSheng Xiao
Objective: To discuss the clinical value of immunoglobulin gene rearrangements in the diagnosis of B-cell lymphoma. Methods: A total of 209 cases of B-cell lymphomas and 35 cases of reactive lymphoid hyperplasia were selected for DNA extraction and PCR amplification using the BIOMED-2 primer system. Gel electrophoresis of heteroduplexes was used to analyze immunoglobulin gene rearrangements. Results: A total of 209 cases of B-cell lymphoma, including 69 extranodal marginal zone B-cell lymphomas of mucosa-associated lymphoid tissue, 63 diffuse large B-cell lymphomas, 39 follicular lymphomas, 15 small lymphocytic lymphomas, 6 plasmacytomas, 6 mantle cell lymphomas, 7 nodal marginal zone B-cell lymphomas, and 4 lymphoplasmacytoid lymphomas, were examined...
September 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/29067926/rare-tracheal-tumor-solitary-plasmacytoma
#11
R Stevic, M Ercegovac, J Stojšić, N Čolić
Primary tracheal tumors are rare and trachea is an exceedingly rare site of extramedullary plasmacytoma (EMP). We report a case of solitary tracheal plasmacytoma causing symptoms of airway obstruction in a 59-year-old man. Flow/volume loop indicated the fixed central airway obstruction. Computerized tomography and bronchoscopy demonstrated a sessile tumor on posterior tracheal wall obstructing 80% of the lumen. Partial tracheal resection with T-T anastomosis was performed. Pathologic analysis of resected mass revealed EMP...
October 23, 2017: Journal of Postgraduate Medicine
https://www.readbyqxmd.com/read/29057130/cutaneous-vasculitis-an-unusual-presentation-of-a-biclonal-nodal-plasma-cell-dyscrasia
#12
D Swan, M Murphy, E Elhassadi
We describe an unusual case of a biclonal nodal plasma cell dyscrasia, presenting with a vasculitic rash, end-organ damage, and cytopenias. Serum protein electrophoresis demonstrated a biclonal kappa-restricted paraprotein, with a negative skeletal survey and no bone marrow disease. Fluorodeoxyglucose-PET-CT (FDG-PET-CT) revealed nodal involvement, which was not appreciable clinically, and facilitated biopsy, confirming the diagnosis of a nodal plasmacytoma. Complete biochemical response and resolution of the vasculitic rash were achieved with bortezomib-based therapy...
2017: Case Reports in Hematology
https://www.readbyqxmd.com/read/29054949/metachronous-solitary-plasmacytoma
#13
Robin Khosa, Shishir Seth, Sapna Nangia
Solitary plasmacytoma is a rare disorder comprising 5%-10% of all plasma cell neoplasms. Progression to multiple myeloma is the most common pattern of relapse. Appearance of new lesions without any systemic disease is the most unusual pattern of relapse seen in <2% cases. We present a case of a 46-year-old female who presented with features of third and seventh cranial nerve palsy, diagnosed with solitary plasmacytoma, with no evidence of any systemic disease. As per standard recommendations, the patient received radiotherapy to the local site...
October 19, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29050519/lncrna-pvt1-predicts-prognosis-and-regulates-tumor-growth-in-prostate-cancer
#14
Jin Yang, Cuirong Li, Ashley Mudd, Xiao Gu
Long non-coding RNA (lncRNA) plasmacytoma variant translocation 1(PVT1) was aberrantly expressed in various cancers and is associated with tumor prognosis. Here, we aim to investigate its function in prostate cancer. Small interfering RNA against PVT1 was transfected into prostate cancer cell lines and cell growth and apoptosis were analyzed. Our results showed that PVT1 was overexpressed in prostate cancer tissues and cells. Higher levels of PVT1 indicated poorer overall survival and disease-free survival...
October 20, 2017: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/29046366/long-non-coding-rna-pvt1-indicates-a-poor-prognosis-of-glioma-and-promotes-cell-proliferation-and-invasion-via-target-ezh2
#15
Anqiang Yang, Handong Wang, Xiaobing Yang
Human glioma, as one of the malignant tumors of the central nervous system, its prognosis is poor, which is due to its genetic heterogeneity and our poor understanding of its underlying molecular mechanisms. This study aimed to assess the relationship between plasmacytoma variant translocation 1 (PVT1) and enhancer of zeste homolog 2 (EZH2), and their effects on the proliferation and invasion of glioma cells. The expression levels of PVT1 and EZH2 in human glioma tissues and cell lines were measured using qRT-PCR...
October 18, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/29035442/long-noncoding-rna-pvt1-as-a-potent-predictor-of-prognosis-in-cancers-a-meta-analysis
#16
Xuefeng Pan, Baohui Li, Naijun Fan, Juntang Li, Fengbo Cai, Guang Zhao, Guobao Zheng, Chunfang Gao
BACKGROUND: Plasmacytoma variant translocation 1 (PVT1), an oncogenic long noncoding RNA located in a recognized cancer-risk gene region-8q24, is significantly overexpressed in various cancers. Many studies have found that high expression of PVT1 was correlated with poor prognosis. METHODS: This meta-analysis was performed by searching electronic databases Pubmed, Web of Science, Chinese National Knowledge Infrastructure, WanFang, and ChongQing VIP for eligible papers on the prognostic impact and clinicopathological characteristics of PVT1 expression in cancer from inception to January 31, 2017...
October 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/29027279/long-non-coding-rna-pvt1-emerging-biomarker-in-digestive-system-cancer
#17
REVIEW
Dan-Dan Zhou, Xiu-Fen Liu, Cheng-Wei Lu, Om Prakash Pant, Xiao-Dong Liu
The digestive system cancers are leading cause of cancer-related death worldwide, and have high risks of morbidity and mortality. More and more long non-coding RNAs (lncRNAs) have been studied to be abnormally expressed in cancers and play a key role in the process of digestive system tumour progression. Plasmacytoma variant translocation 1 (PVT1) seems fairly novel. Since 1984, PVT1 was identified to be an activator of MYC in mice. Its role in human tumour initiation and progression has long been a subject of interest...
October 12, 2017: Cell Proliferation
https://www.readbyqxmd.com/read/29026584/solitary-costal-plasmacytoma-mimicking-lung-cancer-metastasis
#18
Naoki Kadota, Tsutomu Shinohara, Keishi Naruse, Nobuo Hatakeyama
A clinical diagnosis of metastatic bone tumors is usually based on radiological findings without bone biopsy. Plasmacytoma can present as a single osteolytic lesion as described in this case. Early bone biopsy should be considered in unusual clinical settings for a differential diagnosis of primary bone tumors.
October 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/28992848/the-first-report-of-human-primary-thoracic-spine-mast-cell-sarcoma-a-case-report
#19
Ali C Ravanpay, Jonathan R Fromm, Kerstin L Edlefsen, Paul Martin, Randal Chesnut
In this report, we present a 53-year-old woman with primary mast cell sarcoma of the thoracic spine vertebrae. Mast cell sarcoma is an aggressive and rare cancer. To date, no cases of primary mast cell sarcoma have been reported in the spinal vertebrae. The patient initially presented with a 1-month history of pelvic and abdominal pain. Inconclusive gynecological evaluation resulted in a CT of the abdomen and pelvis, demonstrating a destructive lesion centered at the 11th thoracic vertebral body. The patient underwent a two-stage spine operation for T11 corpectomy and T7-L3 posterior spinal fusion...
October 10, 2017: Clinical Neuropathology
https://www.readbyqxmd.com/read/28983379/hypoglossal-nerve-mononeuropathy-as-the-first-presenting-symptom-of-progressing-multiple-myeloma
#20
Neil B Newman, Vidya Puthenpura, Stephanie Mischell, Gabriela Ferreira
Multiple myeloma (MM) rarely presents with a primary neurological dysfunction, and if it does it is usually due to a plasmacytoma. This is the first case to discuss hypoglossal nerve dysfunction as the first sign of MM progression secondary to severe pathophysiologic bone lysis. A PubMed-based literature search was completed on April 17, 2016 for the terms "multiple myeloma" and "hypoglossal nerve neuropathy". A 73-year-old woman with known MM who received little treatment for several years, presented secondary to dysarthria and at first was thought to have hyperviscosity syndrome...
February 2017: World Journal of Oncology
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