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https://www.readbyqxmd.com/read/28345455/recurrent-epigenetic-silencing-of-the-ptprd-tumor-suppressor-in-laryngeal-squamous-cell-carcinoma
#1
Marcin Szaumkessel, Sonia Wojciechowska, Joanna Janiszewska, Natalia Zemke, Ewa Byzia, Katarzyna Kiwerska, Magdalena Kostrzewska-Poczekaj, Adam Ustaszewski, Malgorzata Jarmuz-Szymczak, Reidar Grenman, Malgorzata Wierzbicka, Anna Bartochowska, Krzysztof Szyfter, Maciej Giefing
Cellular processes like differentiation, mitotic cycle, and cell growth are regulated by tyrosine kinases with known oncogenic potential and tyrosine phosphatases that downmodulate the first. Therefore, tyrosine phosphatases are recurrent targets of gene alterations in human carcinomas. We and others suggested recently a tumor suppressor function of the PTPRD tyrosine phosphatase and reported homozygous deletions of the PTPRD locus in laryngeal squamous cell carcinoma. In this study, we investigated other gene-inactivating mechanisms potentially targeting PTPRD, including loss-of-function mutations and also epigenetic alterations like promoter DNA hypermethylation...
March 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28338500/differential-diagnosis-in-neuroendocrine-neoplasms-of-the-larynx
#2
Jennifer L Hunt, Alfio Ferlito, Henrik Hellquist, Alessandra Rinaldo, Alena Skálová, Pieter J Slootweg, Stefan M Willems, Antonio Cardesa
The differential diagnosis of neuroendocrine neoplasms of the larynx is broad and includes lesions of epithelial, mesenchymal, and neuroectodermal origin. These lesions have overlapping clinical and pathologic aspects and must be carefully considered in the differential diagnosis of laryngeal neoplasms. The prognosis and treatment are also different among these tumor types, which necessitates making these distinctions clinically. The current literature was reviewed to provide updated information regarding the epithelial-derived tumors, including carcinoid, atypical carcinoid, small cell neuroendocrine carcinomas, large cell neuroendocrine carcinoma, and squamous cell carcinoma with neuroendocrine component...
March 23, 2017: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/28335497/ginsenoside-ppd-s-antitumor-effect-via-down-regulation-of-mtor-revealed-by-super-resolution-imaging
#3
Bo Teng, Junguang Jiang, Lijing Zhao, Jing Gao, Junyu Chen, Zhe Liu, Hongda Wang, Binfeng Lu
Derived from Panax ginseng, the natural product 20(S)-Protopanaxadiol (PPD) has been reported for its cytotoxicity against several cancer cell lines. The molecular mechanism is, however, not well understood. Here we show that PPD significantly inhibits proliferation, induces apoptosis and causes G2/M cell cycle arrest in human laryngeal carcinoma cells (Hep-2 cells). PPD also decreases the levels of proteins related to cell proliferation. Moreover, PPD-induced apoptosis is characterized by a dose-dependent down-regulation of Bcl-2 expression and up-regulation of Bax, and is accompanied by the activation of Caspase-3 as well...
March 19, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28327951/hpv16-dna-and-integration-in-normal-and-malignant-epithelium-implications-for-the-etiology-of-laryngeal-squamous-cell-carcinoma
#4
X Chen, L Gao, E M Sturgis, Z Liang, Y Zhu, X Xia, X Zhu, X Chen, G Li, Z Gao
Background: Molecular evidence suggests that human papillomavirus (HPV) has a role in the etiology of oropharyngeal squamous cell carcinoma. However, the role of HPV in laryngeal squamous cell carcinoma (LSCC) is unclear. Patients and Methods: We conducted a case-control study using tumor tissue specimens from 300 LSCC patients and vocal cord polyp specimens from 300 cancer-free controls. HPV genotype, HPV16 viral load and viral integration status, and p16 expression were determined...
January 23, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28322111/hpv-in-larynx-squamous-cell-carcinoma-new-serotypes-and-survival-study-within-10-year-follow-up
#5
Alvaro Sánchez Barrueco, Fernando González Galán, David Lora Pablos, José Miguel Villacampa Aubá, Claudio Ballestín Carcavilla, Carlos Cenjor Español, Carlos Almodóvar Álvarez
Objective To determine the presence of human papillomavirus (HPV) in head and neck squamous cell carcinoma, specifically in the larynx without the bias of other sublocations, and to describe the different serotypes of HPV and their impact on overall and disease-free survival after 10-year follow-up. Study Design Retrospective case series with chart review of ear, nose, and throat oncologic database. Setting Academic tertiary care hospital. Subjects A total of 123 samples of larynx squamous cell carcinoma were included, only from the glottis and treated only with surgery between 1977 and 2005...
March 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28304089/phosphorylated-fadd-is-not-prognostic-for-local-control-in-t1-t2-supraglottic-laryngeal-carcinoma-treated-with-radiotherapy
#6
Jan E Wachters, Michiel L Schrijvers, Lorian Slagter-Menkema, Mirjam Mastik, Johannes A Langendijk, Geertruida H de Bock, Jan L Roodenburg, Bernard F A M van der Laan, Jacqueline E van der Wal, Ed Schuuring
OBJECTIVE: The Fas-Associated Death Domain (FADD) gene is located in the chromosome 11q13-region and frequently is amplified in head and neck squamous cell carcinoma. Expression of FADD and its phosphorylated isoform (pFADD) have been associated with aggressive tumor growth, lymph node metastasis, and overall survival. Previously, we demonstrated that pFADD expression was related to a significantly improved local control in early stage (tumor [T]1 to T2) glottic laryngeal squamous cell carcinoma (LSCC)...
March 17, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28301066/effect-of-daily-fraction-size-on-laryngoesophageal-dysfunction-after-chemoradiation-for-squamous-cell-carcinomas-of-the-larynx-and-hypopharynx
#7
Allen M Chen, Sophia Hsu, Jessica Meshman, Robert Chin, Philip Beron, Elliot Abemayor, Maie St John
BACKGROUND: The purpose of this study was to determine the effect of fraction size on laryngoesophageal dysfunction among patients treated by chemoradiotherapy for laryngeal and hypopharyngeal cancer. METHODS: Forty patients underwent chemoradiotherapy for stage III/IV squamous cell carcinomas of the larynx and hypopharynx. Median radiation dose was 70 Gy (range, 69.3-70.4 Gy) with daily fractionation ranging from 2 Gy to 2.2 Gy. RESULTS: When comparing 2 Gy versus >2 Gy daily fractionation, there was no difference in 2-year overall survival (71% vs 72%; p = ...
March 16, 2017: Head & Neck
https://www.readbyqxmd.com/read/28299336/shisa3-promoter-methylation-is-a-potential-diagnostic-and-prognostic-biomarker-for-laryngeal-squamous-cell-carcinoma
#8
Zhisen Shen, Chongchang Zhou, Jinyun Li, Dong Ye, Hongxia Deng, Bin Cao, Wenjuan Hao, Lexi Lin, Yuna Zhang
The purpose of this study was to evaluate the contribution of SHISA3 promoter methylation to laryngeal squamous cell carcinoma (LSCC). SHISA3 promoter methylation status and expression were determined using methylation-specific polymerase chain reaction (MSP) and quantitative real-time PCR (qRT-PCR) in 93 paired LSCC and adjacent normal tissues, respectively. Furthermore, the regulatory function of the SHISA3 promoter fragment was analyzed using a luciferase reporter assay. The results reveal that there is a significant increase in SHISA3 methylation in LSCC tissues compared with corresponding nontumor tissues (P = 4...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28297754/-clinicopathologic-characteristics-of-head-and-neck-carcinoma-showing-thymus-like-element
#9
X J Cui, C Y Zhang, P Su, B Lyu, Y B Ren, X S Fan, X F Zhang, Y Wang, Y H Song, Z Y Liu
Objective: To investigate clinicopathological features of carcinoma showing thymus-like elements (CASTLE) in the head and neck regions. Methods: Clinicopathological data of 7 patients with CASTLE in the head and neck regions were retrospectively reviewed.Immunohistochemical staining and in situ hybridization for EBER were performed. BRAF(V600E) mutation was examined by ARMS method in 6 cases. Results: There were 5 females and 2 males with age between 49 and 78 years (average of 65.6 years). All tumors were solitary nodular lesions with an infiltrative border, including 6 intrathyroid tumors and 1 extrathyroid tumor in the laryngeal pharynx...
March 8, 2017: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/28296244/-watchful-observation-follow-up-scheme-after-endoscopic-co2-laser-treatment-for-small-glottic-carcinomas-a-retrospective-study-of-93-cases
#10
Patrice Gallet, Cécile Rumeau, Duc Trung Nguyen, Pedro Augusto Teixeira, Cédric Baumann, Bruno Toussaint
OBJECTIVES: Evaluate the clinical outcome of patients treated with CO2-laser surgery for early-stage glottic carcinomas followed-up with 3 month laryngoscopy regardless of tumor grade and margins. DESIGN: Case series. SETTING: Retrospective review of the clinical records of patients treated at the ENT department of a tertiary university hospital. PARTICIPANTS AND METHOD: Clinical records from patients with early-stage glottic carcinomas (Tis-T2) treated with curative intent by CO2-laser surgery in a ten year period were evaluated...
March 10, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/28294085/serum-cytokine-profile-of-laryngeal-squamous-cell-carcinoma-patients
#11
J Sotirović, A Perić, D Vojvodić, N Baletić, I Zaletel, I Stanojević, M Erdoglija, M Milojević
OBJECTIVES: This study aimed to evaluate serum cytokine concentrations in healthy individuals and laryngeal squamous cell carcinoma patients. METHODS: A total of 59 laryngeal squamous cell carcinoma patients and 44 healthy controls were included. Multiplex analysis of interleukins 2, 4, 5, 6, 10, 12, 13 and 17 and interferon-gamma with respect to the presence of laryngeal carcinoma, tumour-node-metastasis T stage, nodal involvement and larynx subsite was performed...
March 15, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28277333/voice-outcomes-for-early-laryngeal-cancer
#12
Andrew J Kinshuck, Aditya Shenoy, Terry M Jones
PURPOSE OF REVIEW: Treatment options for early laryngeal cancer are well established with good local control and 5-year survival. The commonest treatments are radiotherapy or transoral laser microsurgery (TLM). There are advantages and disadvantages of the different modalities, but debate continues regarding the voice outcomes posttreatment. This review will focus on early glottic carcinoma and voice outcomes following the different treatments. RECENT FINDINGS: TLM and radiotherapy are both likely to affect voice quality, but the extent of voice change depends on different factors...
March 8, 2017: Current Opinion in Otolaryngology & Head and Neck Surgery
https://www.readbyqxmd.com/read/28272707/reduced-mir-300-expression-predicts-poor-prognosis-in-patients-with-laryngeal-squamous-cell-carcinoma
#13
F-Y He, H-J Liu, Q Guo, J-L Sheng
OBJECTIVE: miR-300 has been demonstrated to play an important role in the progression of several tumors, but its role in tumorigenesis of laryngeal squamous cell carcinoma (LSCC) is still unclear. The purpose of this study was to explore miR-300 expression in LSCC patients and analyze its association with clinicopathological factors and prognosis. PATIENTS AND METHODS: In the present study, we measured the expression level of miR-300 in LSCC tissues by RT-PCR. Associations between miRNA-300 expressions and various clinicopathological characteristics were analyzed...
February 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28269752/a-80-gene-set-potentially-predicts-the-relapse-in-laryngeal-carcinoma-optimized-by-support-vector-machine
#14
Bo Yang, Qing Guo, Fei Wang, Kemin Cai, Xueli Bao, Jiusheng Chu
OBJECTIVE: The present study was performed to identify a gene set for predicting the relapse in laryngeal carcinoma using large data analysis methods. METHODS: Two gene expression profile data of laryngeal carcinoma (GSE27020 and GSE25727) were downloaded from public database. Genes associated with tumor relapse, namely informative genes, were identified by Cox regression analysis. Then the protein-protein interaction (PPI) network consisting of informative genes was constructed...
February 27, 2017: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/28262482/cytotoxicity-and-genotoxicity-effects-of-arsenic-trioxide-on-sq20b-human-laryngeal-carcinoma-cells
#15
Fatma Trabelsi, Rim Khlifi, Didier Goux, Marilyne Guillamin, Amel Hamza-Chaffai, François Sichel
This study investigates the cytotoxicity and the genotoxicity induced by arsenic trioxide As2O3in human laryngeal SQ20B carcinoma cell line. SQ20B cells were exposed to graded concentrations of arsenic trioxide (2 and 5μM) for 48h. Comet assay and γ-H2AX foci formation were used for measuring DNA damages, flow cytometry was used to identify cell cycle alterations and apoptosis, while cell morphology was visualized using transmission electron microscopy. The results show a dose-dependent induction of DNA damages and double strand breaks, alterations in cell cycle and morphologic alterations of cells...
March 2, 2017: Experimental and Toxicologic Pathology: Official Journal of the Gesellschaft Für Toxikologische Pathologie
https://www.readbyqxmd.com/read/28261352/identification-and-characterization-of-cd133-cd44-cancer-stem-cells-from-human-laryngeal-squamous-cell-carcinoma-cell-lines
#16
Jue Wang, Yongyan Wu, Wei Gao, Fei Li, Yunfeng Bo, Meixia Zhu, Rong Fu, Qingqing Liu, Shuxin Wen, Binquan Wang
Background: Laryngeal squamous cell carcinoma ranks second among head and neck squamous-cell carcinomas. Cancer stem cells can support cancer growth and malignant behavior. Therefore, cancer stem cells isolated from laryngeal squamous cell carcinoma tissue could be used to investigate the initiation, progression, and treatment strategies of this cancer. Methods: We isolated CD133-CD44-, CD133-CD44+, CD133+CD44- and CD133+CD44+ cell populations from laryngeal squamous-cell carcinoma cell lines Hep2 and TU-177 by magnetic-activated cell sorting...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28253270/sbrt-for-early-stage-glottic-larynx-cancer-initial-clinical-outcomes-from-a-phase-i-clinical-trial
#17
David L Schwartz, Alan Sosa, Stephen G Chun, Chiuxiong Ding, Xian-Jin Xie, Lucien A Nedzi, Robert D Timmerman, Baran D Sumer
PURPOSE: To confirm safety and feasibility of hypofractionated SBRT for early-stage glottic laryngeal cancer. METHODS: Twenty consecutive patients with cTis-T2N0M0 carcinoma of glottic larynx were enrolled. Patients entered dose-fractionation cohorts of incrementally shorter bio-equivalent schedules starting with 50 Gy in 15 fractions (fx), followed by 45 Gy/10 fx and, finally, 42.5 Gy/5 fx. Maximum combined CTV-PTV expansion was limited to 5 mm. Patients were treated on a Model G5 Cyberknife (Accuray, Sunnyvale, CA)...
2017: PloS One
https://www.readbyqxmd.com/read/28252821/transoral-laser-microsurgery-or-total-laryngectomy-for-recurrent-squamous-cell-carcinoma-of-the-larynx-retrospective-analysis-of-199-cases
#18
Bernhard G Weiss, Mattis Bertlich, Martin Canis, Friedrich Ihler
BACKGROUND: Surgical treatment options for local recurrences of laryngeal cancer can be either organ-preserving surgery or total laryngectomy. The purpose of this study was to present our evaluation of the treatment with transoral laser microsurgery (TLM) in comparison to laryngectomy. METHODS: We conducted a retrospective review of 199 consecutive patients with recurrent laryngeal cancer at 1 tertiary referral center. RESULTS: The 5-year overall survival, disease-specific survival, and local control rates were 64...
March 2, 2017: Head & Neck
https://www.readbyqxmd.com/read/28251322/circulating-calprotectin-as-a-biomarker-of-laryngeal-carcinoma
#19
Muhammet Fatih Topuz, Adem Binnetoglu, Ali Cemal Yumusakhuylu, Murat Sarı, Tekin Baglam, Fetullah Gerin
Calprotectin is an S100 protein and marker of inflammation found in neutrophils and monocytes; S100 proteins are a family of calcium-modulated proteins. The aim of this study was to determine if the serum concentration of calprotectin is higher in patients with laryngeal carcinoma than in patients with benign laryngeal pathologies and controls. The study included 107 participants. The serum calprotectin concentration was analyzed using the calprotectin ELISA (enzyme-linked immunosorbent assay) kit (Calpo AS, Norway)...
March 1, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28247231/update-from-the-4th-edition-of-the-world-health-organization-classification-of-head-and-neck-tumours-what-is-new-in-the-2017-who-blue-book-for-tumours-of-the-hypopharynx-larynx-trachea-and-parapharyngeal-space
#20
Nina Gale, Mario Poljak, Nina Zidar
Chapter 3 "Tumours of the hypopharynx, larynx, trachea, and parapharyngeal space" of the World Health Organization (WHO) Blue Book 2017 "Classification of Head and Neck Tumours" shows a shortened list of entities, especially due to reducing the number of benign and malignant soft tissue tumours, malignant melanoma and some others, which are transferred to more frequently affected regions of the head and neck. The basic concept of the new edition is to assimilate all advances concerning the discussed tumours in a shorter framework, appropriate for daily work...
March 2017: Head and Neck Pathology
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