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Head an neck cancer

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https://www.readbyqxmd.com/read/28938008/vca-nanobodies-target-n-wasp-to-reduce-invadopodium-formation-and-functioning
#1
Tim Hebbrecht, Isabel Van Audenhove, Olivier Zwaenepoel, Adriaan Verhelle, Jan Gettemans
Invasive cancer cells develop small actin-based protrusions called invadopodia, which perform a primordial role in metastasis and extracellular matrix remodelling. Neural Wiskott-Aldrich syndrome protein (N-WASp) is a scaffold protein which can directly bind to actin monomers and Arp2/3 and is a crucial player in the formation of an invadopodium precursor. Expression modulation has pointed to an important role for N-WASp in invadopodium formation but the role of its C-terminal VCA domain in this process remains unknown...
2017: PloS One
https://www.readbyqxmd.com/read/28937303/palliative-coverage-of-cranial-defect-following-failed-cranial-flap-for-advanced-squamous-cell-carcinoma-case-report
#2
Vyacheslav Makler, Jeffrey S Litt, N Scott Litofsky
INTRODUCTION: With advanced-stage head and neck cancers, patients may develop large and/or complex wounds despite multiple reconstruction attempts. Wound coverage may require novel approaches to palliate the patient. METHOD: We present the case of a 56-year-old female with advanced squamous cell carcinoma of the scalp and skull who required multiple surgical interventions. Despite our best reconstructive efforts, the patient subsequently developed scalp infection and sepsis, necessitating further debridement for source control...
September 22, 2017: Journal of Palliative Medicine
https://www.readbyqxmd.com/read/28936292/evolution-of-oral-cancer-treatment-in-an-andalusian-population-sample-rehabilitation-with-prosthetic-obturation-and-removable-partial-prosthesis
#3
Rafael Flores-Ruiz, Lizette Castellanos-Cosano, María-Angeles Serrera-Figallo, Aida Gutiérrez-Corrales, Maribel Gonzalez-Martin, Jose-Luis Gutiérrez-Pérez, Daniel Torres-Lagares
BACKGROUND: Radical surgical resection as a treatment modality for oral cancer often leads to an extensive deficit in both the maxillary and mandibular levels, where the use of a palatal obturator prosthesis (POP) or removable partial denture (RPP). The aim of this study was to evaluate the treatment with POP and RPP in patients treated for oral cancer in the Unit of Prosthetic Rehabilitation of the University Hospital Virgen del Rocío in a period of 20 years. MATERIAL AND METHODS: Retrospective descriptive study during the years 1991 and 2011 analyzing oral cancer type, characteristics, treatment and follow-up...
August 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28932643/clinical-relevance-of-tumor-infiltrating-lymphocytes-pd-l1-expression-and-correlation-with-hpv-p16-in-head-and-neck-cancer-treated-with-bio-or-chemo-radiotherapy
#4
Dan Ou, Julien Adam, Ingrid Garberis, Pierre Blanchard, France Nguyen, Antonin Levy, Odile Casiraghi, Philippe Gorphe, Ingrid Breuskin, François Janot, Stephane Temam, Jean-Yves Scoazec, Eric Deutsch, Yungan Tao
To investigate the prognostic value of tumor infiltrating lymphocytes (TILs: CD8+ and FoxP3+), and PD-L1 expression in patients with head and neck squamous cell carcinoma (HNSCC) treated with radiotherapy combined with cisplatin (CRT) or cetuximab (BRT). Immunohistochemistry for CD8, FoxP3 was performed on pretreatment tissue samples of 77 HNSCC patients. PD-L1 results were evaluable in 38 patients. Cox regression analysis was used to analyze the correlations of these biomarkers expression with clinicopathological characteristics and treatment outcomes...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28932126/dermopathy-associated-with-cetuximab-and-panitumumab-investigation-of-the-usefulness-of-moisturizers-in-its-management
#5
Shoichi Watanabe, Motoki Nakamura, Hiroki Takahashi, Masayasu Hara, Kei Ijichi, Daisuke Kawakita, Akimichi Morita
AIMS: Limited data regarding the objective evaluation of skin exsiccation caused by epidermal growth factor receptor (EGFR) inhibitors exist. Objective indices were applied to evaluate the usefulness of a moisturizer against skin exsiccation associated with the use of EGFR inhibitors in cancer patients. PATIENTS AND METHODS: Patients with either colorectal or head and neck cancer treated with either cetuximab or panitumumab were randomly assigned 1:2 to the prophylactic-treatment arm, where participants received prophylactical moisturizer treatment (heparinoid preparation, Hirudoid(®)), or to the symptomatic-treatment arm, where moisturizer was applied after the onset of cutaneous symptoms...
2017: Clinical, Cosmetic and Investigational Dermatology
https://www.readbyqxmd.com/read/28931031/reducing-therapeutic-misconception-a-randomized-intervention-trial-in-hypothetical-clinical-trials
#6
Paul P Christopher, Paul S Appelbaum, Debbie Truong, Karen Albert, Louise Maranda, Charles Lidz
BACKGROUND: Participants in clinical trials frequently fail to appreciate key differences between research and clinical care. This phenomenon, known as therapeutic misconception, undermines informed consent to clinical research, but to date there have been no effective interventions to reduce it and concerns have been expressed that to do so might impede recruitment. We determined whether a scientific reframing intervention reduces therapeutic misconception without significantly reducing willingness to participate in hypothetical clinical trials...
2017: PloS One
https://www.readbyqxmd.com/read/28930782/determining-the-false-negative-rate-using-fluorescence-image-assisted-sentinel-lymph-node-biopsy-in-cutaneous-melanoma
#7
Rafael A Couto, Gregory A Lamaris, Rebecca Knackstedt, Brendan Alleyne, Paul Durand, Steven Rueda, Brian Gastman
INTRODUCTION: Despite the advances in cutaneous melanoma management, the false-negative rates (FNRs) of sentinel lymph node biopsy (SLNB) are still high. These rates are dependent not only on the technique but also on definitional terms and percentage of head/neck melanoma (highest false-negative SLNB). Fluorescence imaging technology is well acquainted in plastic surgery and other specialties. Having demonstrated that fluorescence-assisted SLNB is effective in melanoma, we are interested in determining its FNR...
September 19, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28930778/radioprotection-with-amifostine-enhances-bone-strength-and-regeneration-and-bony-union-in-a-rat-model-of-mandibular-distraction-osteogenesis
#8
Catherine N Tchanque-Fossuo, Alexis Donneys, Sagar S Deshpande, Deniz Sarhaddi, Noah S Nelson, Laura A Monson, Sara E Dahle, Steve A Goldstein, Steven R Buchman
BACKGROUND: Using distraction osteogenesis (DO) to regenerate robust endogenous bone could greatly enhance postoncologic reconstruction of head and neck cancer. However, radiation (XRT) corrosive effects still preclude DO's immense potential. We posit that adjunctive pretreatment with the radioprotectant amifostine (AMF) can optimize wound healing and allow for successful DO with quantifiable enhancements in bony union and strength despite previous surgical bed irradiation. METHODS: Two groups of murine left hemimandibles were exposed to a human equivalent radiation dosage fractionated over 5 daily doses of 7 Gy...
September 19, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28930258/an-aloe-vera-based-cosmeceutical-cream-delays-and-mitigates-ionizing-radiation-induced-dermatitis-in-head-and-neck-cancer-patients-undergoing-curative-radiotherapy-a-clinical-study
#9
Suresh Rao, Sanath Kumar Hegde, Manjeshwar Poonam Baliga-Rao, Princy Louis Palatty, Thomas George, Manjeshwar Shrinath Baliga
Background: This study was planned to evaluate the efficacy of topical application of an Aloe vera-based cream (AVC) for the prevention of ionizing radiation (X ray)-induced dermatitis in head and neck cancer patients requiring therapeutic radiation treatment (>62 Gy). Methods: From July 2012 to December 2012, a total of 60 head and neck cancer patients requiring curative radiotherapy (RT) of more than 66 Gy were prospectively enrolled and treated with AVC or a comparator Johnson's Baby Oil (JBO). Acute skin reaction was monitored and classified according to the Radiation Therapy Oncology Group (RTOG) four-point rating scale on a weekly basis...
June 24, 2017: Medicines (Basel, Switzerland)
https://www.readbyqxmd.com/read/28927926/short-dental-implants-a-scoping-review-of-the-literature-for-patients-with-head-and-neck-cancer
#10
REVIEW
Faraj Edher, Caroline T Nguyen
STATEMENT OF PROBLEM: Dental implants can be essential in the rehabilitation of various cancer defects, but their ideal placement can be complicated by the limited dimensions of the available host bone. Surgical interventions developed to increase the amount of bone are not all predictable or successful and can sometimes be contraindicated. Short dental implants have been suggested as an alternative option in sites where longer implants are not possible. Whether they provide a successful treatment option is unclear...
September 16, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28927732/radioactive-seed-migration-following-parotid-gland-interstitial-brachytherapy
#11
Yi Fan, Ming-Wei Huang, Yi-Jiao Zhao, Hong Gao, Jian-Guo Zhang
PURPOSE: To evaluate the incidence and associated factors of pulmonary seed migration after parotid brachytherapy using a novel migrated seed detection technique. METHODS AND MATERIALS: Patients diagnosed with parotid cancer who underwent permanent parotid brachytherapy from January 2006 to December 2011 were reviewed retrospectively. Head and neck CT scans and chest X-rays were evaluated during routine follow-up. Mimics software and Geomagic Studio software were used for seed reconstruction and migrated seed detection from the original implanted region, respectively...
September 15, 2017: Brachytherapy
https://www.readbyqxmd.com/read/28927147/long-term-changes-in-the-properties-of-skin-derived-fibroblasts-following-irradiation-of-the-head-and-neck
#12
Thomas Gehrke, Agmal Scherzad, Stephan Hackenberg, Pascal Ickrath, Philipp Schendzielorz, Rudolf Hagen, Norbert Kleinsasser
The tumor stroma performs an important role in carcinogenesis. It predominantly consists of fibroblasts and the connective tissue produced by them, and undergoes a multitude of interactions with the surrounding cancer cells. Since irradiation is part of the majority of therapeutic strategies for head and neck squamous cell carcinoma, more information regarding the effects of a previous irradiation on the tumor stroma is desirable. In the present study, fibroblasts were cultivated from human non-irradiated and pre-irradiated skin of the neck for 48 h...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28926591/no-evidence-for-the-presence-of-epstein-barr-virus-in-squamous-cell-carcinoma-of-the-mobile-tongue
#13
Torben Wilms, Gulfaraz Khan, Philip J Coates, Nicola Sgaramella, Robin Fåhraeus, Asma Hassani, Pretty S Philip, Lena Norberg Spaak, Luigi Califano, Giuseppe Colella, Katarina Olofsson, Christos Loizou, Renato Franco, Karin Nylander
Squamous cell carcinoma of the head and neck (SCCHN) comprises a large group of cancers in the oral cavity and nasopharyngeal area that typically arise in older males in association with alcohol/tobacco usage. Within the oral cavity, the mobile tongue is the most common site for tumour development. The incidence of tongue squamous cell carcinoma (TSCC) is increasing in younger people, which has been suggested to associate with a viral aetiology. Two common human oncogenic viruses, human papilloma virus (HPV) and Epstein-Barr virus (EBV) are known causes of certain types of SCCHN, namely the oropharynx and nasopharynx, respectively...
2017: PloS One
https://www.readbyqxmd.com/read/28925973/mechanisms-by-which-hpv-induces-a-replication-competent-environment-in-differentiating-keratinocytes
#14
REVIEW
Cary Moody
Human papillomaviruses (HPV) are the causative agents of cervical cancer and are also associated with other genital malignancies, as well as an increasing number of head and neck cancers. HPVs have evolved their life cycle to contend with the different cell states found in the stratified epithelium. Initial infection and viral genome maintenance occurs in the proliferating basal cells of the stratified epithelium, where cellular replication machinery is abundant. However, the productive phase of the viral life cycle, including productive replication, late gene expression and virion production, occurs upon epithelial differentiation, in cells that normally exit the cell cycle...
September 19, 2017: Viruses
https://www.readbyqxmd.com/read/28919248/safety-of-differential-radiation-dosing-in-lymph-node-positive-necks-treated-with-imrt
#15
Stephen Sozio, Zorimar Rivera-Núñez, Omar Mahmoud, Sung Kim
PURPOSE: When treating head and neck squamous cell carcinoma (HNSCC) with intensity modulated radiation therapy (IMRT), it is common to use several dose levels for a lymph node positive neck: full dose (66-70 Gy) to gross cancer, intermediate dose (59-63 Gy) to higher risk neck regions, and standard dose (50-54 Gy) to lower risk neck regions. There is no consensus regarding how much of the neck should receive intermediate versus standard dose, however. METHODS AND MATERIALS: HNSCC patients treated with IMRT were identified from 2 academic medical centers between 2004 and 2016...
July 19, 2017: Practical Radiation Oncology
https://www.readbyqxmd.com/read/28918429/synergy-of-dendritic-cell-vaccines-and-avasimibe-in-treatment-of-head-and-neck-cancer-in-mice
#16
Xin Chen, Qibin Song, Leiming Xia, Ximing Xu
BACKGROUND The main purpose of this study was to explore the antitumor effect and mechanisms of ACAT1 inhibitor combined with CSCs-DC vaccine. MATERIAL AND METHODS We isolated HNSCC CSCs and gained CSCs antigens, then used CSCs antigens to load dendritic cells (DC) and generated a CSCs-DC vaccine. We treated mice after surgical excision of established SCC7 tumors with CSCs-DC vaccine and/or ACAT1 inhibitor, and recorded local tumor relapse and host survival. T cells and B cells were harvested from mice treated with CSCs-DC vaccine and/or ACAT1 inhibitor...
September 17, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28918176/ninety-day-mortality-after-radical-radiotherapy-for-head-and-neck-cancer
#17
L Dixon, K Garcez, L W Lee, A Sykes, N Slevin, D Thomson
AIMS: Treatment for head and neck cancers using definitive radiotherapy, with or without chemotherapy, is associated with significant acute toxicity. Our aim was to assess 90 day mortality after radical radiotherapy. A further aim was to identify patient, tumour or treatment factors associated with early death after treatment and whether these could be used to predict outcomes. MATERIALS AND METHODS: In total, 1116 patients with squamous cell pharyngeal and larynx cancer between January 2011 and December 2015 were included...
September 13, 2017: Clinical Oncology: a Journal of the Royal College of Radiologists
https://www.readbyqxmd.com/read/28916527/demethylation-therapy-as-a-targeted-treatment-for-human-papilloma-virus-associated-head-and-neck-cancer
#18
Asel K Biktasova, Michael Hajek, Andrew B Sewell, Cyril S Gary, Gary Bellinger, Hari Deshpande, Aarti K Bhatia, Barbara A Burtness, Benjamin L Judson, Saral Mehra, Wendell G Yarbrough, Natalia Issaeva
PURPOSE: DNA methylation in human papillomavirus-associated (HPV+) head and neck squamous cell carcinoma (HNSCC) may have importance for continuous expression of HPV oncogenes, tumor cell proliferation and survival. Here, we determined activity of a global DNA demethylating agent, 5-azacytidine (5-aza), against HPV+ HNSCC in pre-clinical models and explored it as a targeted therapy in a window trial enrolling patients with HPV+ HNSCC. EXPERIMENTAL DESIGN: Sensitivity of HNSCC cells to 5-aza treatment was determined, then 5-aza activity was tested in vivo using xenografted tumors in a mouse model...
September 15, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28915554/resistance-to-ctla-4-checkpoint-inhibition-reversed-through-selective-elimination-of-granulocytic-myeloid-cells
#19
Paul E Clavijo, Ellen C Moore, Jianhong Chen, Ruth J Davis, Jay Friedman, Young Kim, Carter Van Waes, Zhong Chen, Clint T Allen
PURPOSE: Local immunosuppression remains a critical problem that limits clinically meaningful response to checkpoint inhibition in patients with head and neck cancer. Here, we assessed the impact of MDSC elimination on responses to CTLA-4 checkpoint inhibition. EXPERIMENTAL DESIGN: Murine syngeneic carcinoma immune infiltrates were characterized by flow cytometry. Granulocytic MDSCs (gMDSCs) were depleted and T-lymphocyte antigen-specific responses were measured...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28911070/induction-tpf-followed-by-concomitant-treatment-versus-concomitant-treatment-alone-in-locally-advanced-head-and-neck-cancer-a-phase-ii-iii-trial
#20
M G Ghi, A Paccagnella, D Ferrari, P Foa, D Alterio, C Codecà, F Nolè, E Verri, R Orecchia, F Morelli, S Parisi, C Mastromauro, C A Mione, C Rossetto, M Polsinelli, H Koussis, L Loreggian, A Bonetti, F Campostrini, G Azzarello, C D'Ambrosio, F Bertoni, C Casanova, E Emiliani, M Guaraldi, F Bunkheila, P Bidoli, R M Niespolo, A Gava, E Massa, A Frattegiani, F Valduga, G Pieri, T Cipani, D Da Corte, F Chiappa, E Rulli
Background: Platinum-based chemoradiation (CCRT) is the standard treatment for Locally Advanced Head and Neck Squamous-Cell Carcinoma (LAHNSCC). Cetuximab/RT (CET/RT) is an alternative treatment option to CCRT. The efficacy of induction chemotherapy (IC) followed by chemoradiation compared to chemoradiation alone has not been demonstrated in randomized clinical trials. The goals of this phase II-III trial were to assess: (i) the overall survival (OS) of IC versus no-induction (no-IC) and (ii) the Grade 3-4 in-field mucosal toxicity of CCRT versus CET/RT...
September 1, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
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