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https://www.readbyqxmd.com/read/28446006/trending-speculations-of-tumor-initiating-cells-in-squamous-cell-cancers-of-head-and-neck
#1
REVIEW
Wasim Kamate, Rajendra Baad, Nupura Vibhute, Uzma Belgaumi, Vidya Kadashetti, Sushma Gugwad
Tumor-initiating cells are a diminutive subpopulation of stem cells that have ability of long term self-renewal and generation of varied traits of tumor cell population. Understanding the concept of tumor-initiating cells may have a great implicative intimation for our comprehension of cancer pathobiology and for the delineation of new therapies directed towards these stem cells. The present review is an endeavor to conceptualize the role of tumor-initiating cells in the Squamous Cell Cancers (SCC) of head and neck, their role in tumorigenesis and the possible supplementary approach in the latest treatment modalities...
April 30, 2017: International Journal of Stem Cells
https://www.readbyqxmd.com/read/28445287/prognostic-value-of-pretreatment-18f-fdg-pet-ct-for-nasopharyngeal-carcinoma-patients
#2
Yecai Huang, Mei Feng, Qiao He, Jun Yin, Peng Xu, Qinghua Jiang, Jinyi Lang
BACKGROUND: Nasopharyngeal carcinoma (NPC) is a special subtype of head and neck cancer (HNC). At present, there are no highly specific prognostic markers to aid in tumor grading and guide patient treatment modalities for NPC. The prognostic value of pretreatment F-fluorodeoxyglucose positron emission tomography-computed tomography (F-PET-CT) in NPC patients is controversial and no consensus exists as to its predictive capability. METHODS: To analyze the predictive efficacy of F-PET-CT imaging in NPC patients, data from MEDLINE, EMBASE, the Cochrane library, CBM, CNKI, and VIP (inception to July 2016) were accessed...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28444831/analysis-of-modulation-factor-to-shorten-the-delivery-time-in-helical-tomotherapy
#3
Hidetoshi Shimizu, Koji Sasaki, Hiroyuki Tachibana, Natsuo Tomita, Chiyoko Makita, Kuniyasu Nakashima, Kazushi Yokoi, Takashi Kubota, Manabu Yoshimoto, Tohru Iwata, Takeshi Kodaira
A low modulation factor (MF) maintaining a good dose distribution contributes to the shortening of the delivery time and efficiency of the treatment plan in helical tomotherapy. The purpose of this study was to reduce the delivery time using initial values and the upper limit values of MF. First, patients with head and neck cancer (293 cases) or prostate cancer (181 cases) treated between June 2011 and July 2015 were included in the analysis of MF values. The initial MF value (MFinitial ) was defined as the average MFactual value, and the upper limit of the MF value (MFUL ) was defined according the following equation: MFUL = 2 × standard deviation of MFactual value + the average MFactual Next, a treatment plan was designed for patients with head and neck cancer (62 cases) and prostate cancer (13 cases) treated between December 2015 and June 2016...
April 26, 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28444772/multi-atlas-approach-with-local-registration-goodness-weighting-for-mri-based-electron-density-mapping-of-head-and-neck-anatomy
#4
Reza Farjam, Neelam Tyagi, Harini Veeraraghavan, Aditya Apte, Kristen Zakian, Margie A Hunt, Joseph O Deasy
PURPOSE: The growing use of magnetic resonance imaging (MRI) as a substitute for computed tomography-based treatment planning requires the development of effective algorithms to generate electron density maps for treatment planning and patient setup verification. The purpose of this work was to develop a method to synthesize computerized tomography (CT) for MR-only radiotherapy of head and neck cancer patients. METHODS: The algorithm is based on registration of multiple patient datasets containing both MRI and CT images (a "multi-atlas" algorithm)...
April 26, 2017: Medical Physics
https://www.readbyqxmd.com/read/28444488/prophylactic-swallow-therapy-for-patients-with-head-and-neck-cancer-undergoing-chemoradiotherapy-a-randomized-trial
#5
Barbara Pisano Messing, Elizabeth C Ward, Cathy L Lazarus, Melissa Kim, Xian Zhou, Jessica Silinonte, Dorothy Gold, Karen Harrer, Karen Ulmer, Samantha Merritt, Geoffrey Neuner, Marshall Levine, Ray Blanco, John Saunders, Joseph Califano
Evidence supporting prophylactic swallow exercises for patients with head and neck cancer (HNC) has not been universally demonstrated. This RCT examined diet level, feeding tube use, swallow function, and quality of life (QOL) of patients undergoing chemoradiotherapy who performed prophylactic swallowing exercises. Sixty HNC patients were randomized into exercise versus control groups. Swallowing, oromotor, toxicity, and QOL data were recorded (baseline, 3, 6, 12, 24 months). Physiological swallow function was examined at baseline and 3 months...
April 25, 2017: Dysphagia
https://www.readbyqxmd.com/read/28443494/expression-profiling-of-long-non-coding-rna-identifies-linc-ror-as-a-prognostic-biomarker-in-oral-cancer
#6
Ganesan Arunkumar, Arunagiri Kuha Deva Magendhra Rao, Mayakannan Manikandan, Kanagaraj Arun, Vilvanathan Vinothkumar, Sundaramoorthy Revathidevi, Kottayasamy Seenivasagam Rajkumar, Ramamurthy Rajaraman, Arasambattu Kannan Munirajan
Oral squamous cell carcinoma is the most aggressive cancer that is associated with high recurrence, metastasis, and poor treatment outcome. Dysregulation of long non-coding RNAs has been shown to promote tumor growth and metastasis in several cancers. In this study, we investigated the expression of 11 selected long non-coding RNAs that are associated with cell proliferation, metastasis, and tumor suppression in oral squamous cell carcinomas and normal tissues by quantitative real-time polymerase chain reaction...
April 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28443291/a-review-of-the-development-of-tumor-vasculature-and-its-effects-on-the-tumor-microenvironment
#7
REVIEW
Jake C Forster, Wendy M Harriss-Phillips, Michael Jj Douglass, Eva Bezak
BACKGROUND: The imbalance of angiogenic regulators in tumors drives tumor angiogenesis and causes the vasculature to develop much differently in tumors than in normal tissue. There are several cancer therapy techniques currently being used and developed that target the tumor vasculature for the treatment of solid tumors. This article reviews the aspects of the tumor vasculature that are relevant to most cancer therapies but particularly to vascular targeting techniques. MATERIALS AND METHODS: We conducted a review of identified experiments in which tumors were transplanted into animals to study the development of the tumor vasculature with tumor growth...
2017: Hypoxia
https://www.readbyqxmd.com/read/28443095/radiotherapy-associated-long-term-modification-of-expression-of-the-inflammatory-biomarker-genes-arg1-bcl2l1-and-myc
#8
Grainne Manning, Aleš Tichý, Igor Sirák, Christophe Badie
Ionizing radiation (IR) exposure of cells in vitro and in vivo triggers a complex cellular response among which modifications of gene expression have been consistently reported. Nevertheless, little is currently known about the transcriptionally responsive genes which play a role in the inflammation response. In order to improve our understanding of such transcriptional response to radiation in vivo, we simultaneously monitored the expression of 249 genes associated with the inflammation response over the course of the radiotherapy treatment in blood of patients treated for endometrial or head and neck cancer...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28443091/natural-killer-group-2d-ligand-depletion-reconstitutes-natural-killer-cell-immunosurveillance-of-head-and-neck-squamous-cell-carcinoma
#9
Sandra Weil, Stefanie Memmer, Axel Lechner, Volker Huppert, Ariane Giannattasio, Tamara Becker, Andreas Müller-Runte, Karen Lampe, Dirk Beutner, Alexander Quaas, Ralf Schubert, Eva Herrmann, Alexander Steinle, Ulrike Koehl, Lutz Walter, Michael S von Bergwelt-Baildon, Joachim Koch
Head and neck squamous cell carcinoma (HNSCC) is a highly heterogeneous and aggressive tumor originating from the epithelial lining of the upper aero-digestive tract accounting for 300,000 annual deaths worldwide due to failure of current therapies. The natural killer group 2D (NKG2D) receptors on natural killer (NK) cells and several T cell subsets play an important role for immunosurveillance of HNSCC and are thus targeted by tumor immune evasion strategies in particular by shedding of various NKG2D ligands (NKG2DLs)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28442504/characterization-of-the-tumor-t-cell-receptor-repertoire-and-immune-microenvironment-in-patients-with-locoregionally-advanced-squamous-cell-carcinoma-of-the-head-and-neck
#10
Vassiliki Saloura, Aiman Fatima, Makda Zewde, Kazuma Kiyotani, Ryan J Brisson, Jae-Hyun Park, Yuji Ikeda, Theodore Vougiouklakis, Riyue Bao, Tanguy Y Seiwert, Nicole A Cipriani, Mark W Lingen, Everett E Vokes, Yusuke Nakamura
Squamous cell carcinoma of the head and neck (SCCHN) is a lethal cancer with a suboptimal 5-year overall survival of approximately 50% with surgery and/or definitive chemoradiotherapy. Novel treatments are thus urgently awaited. Immunotherapy with checkpoint blockade has emerged as a promising option for patients with recurrent/metastatic SCCHN, however it has not been investigated in the curative-intent setting yet. The purpose of this study was to investigate the T-cell receptor repertoire and the tumor microenvironment in tumor tissues of SCCHN patients with locoregionally advanced disease...
April 25, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28441800/-risk-for-metastasis-of-lymph-node-between-sternocleidomastoid-and-sternohyoid-muscle-in-papillary-thyroid-cancer
#11
G H Sun, N Qu, J Q Hu, R L Shi, T T Zhang, D Wen, Y L Wang, Y Wang, Y X Zhu, Q H Ji
Objective: To analyze the risk factors for metastasis of lymph nodes between sternocleidomastoid and sternohyoid muscle (LNSS) in papillary thyroid cancer (PTC). Methods: Papillary thyroid cancer patients with clinically positive lateral lymph node metastasis (cN1) who underwent surgery including LNSS dissection between May 1, 2013 and May 31, 2016 at the Department of Head and Neck Surgery, Fudan University Shanghai Cancer Center were retrospectively studied. Logistic regression analysis was performed to evaluate possible clinicopathological factors related to LNSS metastasis...
April 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/28441771/hepatocyte-growth-factor-c-met-signaling-in-head-and-neck-cancer-and-implications-for-treatment
#12
REVIEW
Natalie J Rothenberger, Laura P Stabile
Aberrant signaling of the hepatocyte growth factor (HGF)/c-Met pathway has been identified as a promoter of tumorigenesis in several tumor types including head and neck squamous cell carcinoma (HNSCC). Despite a relatively low c-Met mutation frequency, overexpression of HGF and its receptor c-Met has been observed in more than 80% of HNSCC tumors, with preclinical and clinical studies linking overexpression with cellular proliferation, invasion, migration, and poor prognosis. c-Met is activated by HGF through a paracrine mechanism to promote cellular morphogenesis enabling cells to acquire mesenchymal phenotypes in part through the epithelial-mesenchymal transition, contributing to metastasis...
April 24, 2017: Cancers
https://www.readbyqxmd.com/read/28440463/livin-enhances-chemoresistance-in-head-and-neck-squamous-cell-carcinoma
#13
Tae Mi Yoon, Sun-Ae Kim, Dong Hoon Lee, Joon Kyoo Lee, Young-Lan Park, Kyung-Hwa Lee, Ik-Joo Chung, Young-Eun Joo, Sang Chul Lim
The responsiveness of head and neck squamous cell carcinoma (HNSCC) to chemotherapy widely affects prognosis. Overcoming chemoresistance is necessary to improve prognoses in patients with advanced HNSCC. Evasion of apoptosis by cancer cells is a major cause of chemoresistance. Livin, a member of the human inhibitors of apoptosis protein family, is highly expressed in various human cancer tissues and is associated with tumor progression and poor prognosis in human cancers. The aim of the present study was to evaluate the role of Livin in the susceptibility to popularly used chemotherapeutic drugs such as cisplatin, 5-fluorouracil (FU) and docetaxel in human HNSCC cell lines (SNU1041, PCI1 and PCI50 cells)...
April 19, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28439918/site-specific-familial-risk-and-survival-of-familial-and-sporadic-head-and-neck-cancer
#14
Suvi Renkonen, Myeongjee Lee, Antti Mäkitie, Linda S Lindström, Kamila Czene
The vast majority of head and neck cancers (HNCs) are sporadic squamous cell carcinomas, smoking and heavy drinking being the main risk factors. However, little is known about the possible role of family history and the importance of inherited factors versus shared environment. We used Swedish population-based registries to study the family history of HNC. In order to estimate the risk for family members to get the same cancer, and the risk for cancer-specific death in patients with a family history of HNC compared with patients without a family history, multivariate Cox proportional hazards analyses were performed...
April 25, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28439153/supraclavicular-metastases-from-distant-primary-solid-tumours-a-retrospective-study-of-41%C3%A2-years
#15
Keyvan Sagheb, Asina Manz, Stefan B Albrich, Katherine J Taylor, Georg Hess, Christian Walter
OBJECTIVES: Approximately 1 % of all malignant solid tumours of the head and neck area are metastases from primary tumours beneath the clavicles. The aim of this study was to analyse the distribution of primary tumours since meta-analyses might have been biased due to the usually extraordinary character of case reports. MATERIALS AND METHODS: All patient files from 1970 to 2012 from the Oral and Maxillofacial Surgery unit at a University Hospital were analysed regarding the existence of metastases to the head and neck area from distant primaries...
June 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28438789/desmoglein-2-modulates-extracellular-vesicle-release-from-squamous-cell-carcinoma-keratinocytes
#16
Andrew M Overmiller, Jennifer A Pierluissi, Peter J Wermuth, Sami Sauma, Ubaldo Martinez-Outschoorn, Madalina Tuluc, Adam Luginbuhl, Joseph Curry, Larry A Harshyne, James K Wahl, Andrew P South, Mỹ G Mahoney
Extracellular vesicles (EVs) are nanoscale membrane-derived vesicles that serve as intercellular messengers carrying lipids, proteins, and genetic material. Substantial evidence has shown that cancer-derived EVs, secreted by tumor cells into the blood and other bodily fluids, play a critical role in modulating the tumor microenvironment and affecting the pathogenesis of cancer. Here we demonstrate for the first time that squamous cell carcinoma (SCC) EVs were enriched with the C-terminal fragment of desmoglein 2 (Dsg2), a desmosomal cadherin often overexpressed in malignancies...
April 24, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28438704/folic-acid-decorated-polyamidoamine-dendrimer-exhibits-high-tumor-uptake-and-sustained-highly-localized-retention-in-solid-tumors-its-utility-for-local-sirna-delivery
#17
Leyuan Xu, W Andrew Yeudall, Hu Yang
The utility of folic acid (FA)-decorated polyamidoamine dendrimer G4 (G4-FA) as a vector was investigated for local delivery of siRNA. In a xenograft HN12 (or HN12-YFP) tumor mouse model of head and neck squamous cell carcinomas (HNSCC), intratumorally (i.t.) injected G4-FA exhibited high tumor uptake and sustained highly localized retention in the tumors according to near infrared (NIR) imaging assessment. siRNA against vascular endothelial growth factor A (siVEGFA) was chosen as a therapeutic modality. Compared to the nontherapeutic treatment groups (PBS solution or dendrimer complexed with nontherapeutic green fluorescent protein siRNA [siGFP]), G4-FA/siVEGFA showed tumor inhibition effects in single-dose and two-dose regimen studies...
April 21, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28438551/development-of-a-buccal-doxepin-platform-for-pain-in-oral-mucositis-derived-from-head-and-neck-cancer-treatment
#18
Roser Sanz, Ana C Calpena, Mireia Mallandrich, Álvaro Gimeno, Lyda Halbaut, Beatriz Clares
This study describes the development of semisolid formulations containing doxepin (DOX) for pain relief in oral mucositis, frequently related to chemotherapy and/or radiotherapy treatments in patients with head and neck cancer. Chemical permeation enhancers were evaluated and selected according to the results obtained from rheological studies, drug release, permeation and retention through buccal mucosa. Finally, the selected formulation was compared in vivo, with a reference DOX mouthwash, whose clinical efficacy had been previously reported...
April 21, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28438299/can-gene-editing-and-silencing-technologies-play-a-role-in-the-treatment-of-head-and-neck-cancer
#19
REVIEW
Mushfiq H Shaikh, Daniel T W Clarke, Newell W Johnson, Nigel A J McMillan
Conventional treatment strategies have done little to improve the prognosis or disease-free survival in head and neck cancer (HNC) patients. Recent progress in our understanding of molecular aspects of head and neck squamous cell carcinoma (HNSCC) has provided insights into the potential use of molecular targeted therapies in combination with current treatment strategies. Here we review the current understanding of treatment modalities for both HPV-positive and HPV-negative HNSCCs with the potential to use gene editing and silencing technologies therapeutically...
May 2017: Oral Oncology
https://www.readbyqxmd.com/read/28438298/intravoxel-incoherent-motion-magnetic-resonance-imaging-in-head-and-neck-cancer-a-systematic-review-of-the-diagnostic-and-prognostic-value
#20
REVIEW
Daniel P Noij, Roland M Martens, J Tim Marcus, Remco de Bree, C René Leemans, Jonas A Castelijns, Marcus C de Jong, Pim de Graaf
Intravoxel incoherent motion (IVIM) imaging is increasingly applied in the assessment of head and neck cancer (HNC). Our purpose was to determine the diagnostic and prognostic performance of IVIM in HNC by performing a critical review of the literature. Pubmed and EMBASE were searched until May 2016. Study and patients characteristics, imaging protocol and diagnostic or prognostic outcomes were extracted by 2 independent reviewers. The studied IVIM parameters were diffusion coefficient (D), pseudodiffusion coefficient (D∗), and perfusion fraction (f)...
May 2017: Oral Oncology
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