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https://www.readbyqxmd.com/read/28214216/cancer-stem-cell-cytokeratins-and-epithelial-to-mesenchymal-transition-markers-expression-in-oral-squamous-cell-carcinoma-derived-from-ortothopic-xenoimplantation-of-cd44-high-cells
#1
Nathália Paiva de Andrade, Maria Fernanda Setúbal Destro Rodrigues, Camila Oliveira Rodini, Fabio Daumas Nunes
Oral squamous cell carcinoma (OSCC) is the most prevalent neoplasia of oral cavity worldwide and prognosis remains unchanged in decades. Recently, different authors reported that head and neck squamous cell carcinomas have a subpopulation of tumor initiating cells that apparently correspond to cancer stem cells (CSC) and are also responsible for tumor growth and metastasis. The purpose of the present study was to investigate the microscopic and phenotypic characteristics of OSCC tumors induced after orthotopic xenoimplantation of SCC9(WT) cell line and CSC-enriched subpopulation isolated from SCC9 cell line based on high expression of the putative CSC marker CD44...
December 23, 2016: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28212555/construction-of-a-pathological-risk-model-of-occult-lymph-node-metastases-for-prognostication-by-semi-automated-image-analysis-of-tumor-budding-in-early-stage-oral-squamous-cell-carcinoma
#2
Nicklas Juel Pedersen, David Hebbelstrup Jensen, Giedrius Lelkaitis, Katalin Kiss, Birgitte Charabi, Lena Specht, Christian von Buchwald
It is challenging to identify at diagnosis those patients with early oral squamous cell carcinoma (OSCC), who have a poor prognosis and those that have a high risk of harboring occult lymph node metastases. The aim of this study was to develop a standardized and objective digital scoring method to evaluate the predictive value of tumor budding. We developed a semi-automated image-analysis algorithm, Digital Tumor Bud Count (DTBC), to evaluate tumor budding. The algorithm was tested in 222 consecutive patients with early-stage OSCC and major endpoints were overall (OS) and progression free survival (PFS)...
February 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/28209617/loss-of-ndrg2-expression-confers-oral-squamous-cell-carcinoma-with-enhanced-metastatic-potential
#3
Tomohiro Tamura, Tomonaga Ichikawa, Shingo Nakahata, Yudai Kondo, Yuri Tagawa, Kouji Yamamoto, Kentaro Nagai, Takashi Baba, Ryoji Yamaguchi, Mitsuru Futakuchi, Yoshihiro Yamashita, Kazuhiro Morishita
Loss of the tumor suppressor NDRG2 has been implicated in the development of oral squamous cell carcinoma (OSCC), acting by modulating PI3K/AKT-mediated dephosphorylation of PTEN at S380/S382/T383 (STT). Here we show that the majority of OSCC tumors with lymph node metastasis, a major prognostic factor, exhibit high levels of phosphorylated AKT-S473 and PTEN-STT and low levels of NDRG2 expression. In Ndrg2-deficient mice, which develop a wide range of tumors, we developed a model of OSCC by treatment with the tobacco surrogate 4-nitroquinoline-1-oxide (4-NQO)...
February 16, 2017: Cancer Research
https://www.readbyqxmd.com/read/28209441/proliferative-verrucous-leukoplakia-diagnosis-management-and-current-advances
#4
Diogo Lenzi Capella, Jussara Maria Gonçalves, Adelino António Artur Abrantes, Liliane Janete Grando, Filipe Ivan Daniel
INTRODUCTION: Proliferative verrucous leukoplakia is a multifocal and progressive lesion of the oral mucosa, with unknown etiology, and commonly resistant to all therapy attempts with frequent recurrences. It is characterized by a high rate of oral squamous cell carcinoma and verrucou carcinoma transformations. OBJECTIVE: To analyze the studies about Proliferative verrucous leukoplakia and develop a concise update. METHODS: A Pubmed search identifying studies (laboratory research, case series and reviews of literature) that examined patients with Proliferative verrucous leukoplakia was realized...
January 24, 2017: Brazilian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/28209383/expression-pattern-of-heat-shock-protein-90-in-patients-with-oral-squamous-cell-carcinoma-in-northern-taiwan
#5
W-C Chang, P-T Tsai, C-K Lin, Y-S Shieh, Y-W Chen
Heat shock protein 90 (HSP90), which is expressed in cancer cells, profoundly affects progression, invasion, and metastasis. However, to our knowledge, in East Asia, the correlation between the expression of HSP90 and clinicopathological variables has seldom been discussed. We therefore investigated this and its prognostic value in 36 patients newly diagnosed with oral squamous cell carcinoma (SCC) in northern Taiwan. Samples of tumour and normal samples from the patients were compared immunohistochemically...
February 13, 2017: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/28209200/roles-of-preoperative-c-reactive-protein-are-more-relevant-in-buccal-cancer-than-other-subsites
#6
Shiao Fwu Tai, Huei-Tzu Chien, Chi-Kuang Young, Chung-Kang Tsao, Alba de Pablo, Kang-Hsing Fan, Chun-Ta Liao, Hung-Ming Wang, Chung-Jan Kang, Joseph Tung-Chieh Chang, Shiang-Fu Huang
BACKGROUND: C-reactive protein (CRP) is an early marker for inflammation, and a relationship between serum CRP levels and survival in oral cancer has been demonstrated previously. In this study, we investigated the roles of CRP in different oral cancer subsites. METHODS: Three hundred and forty-three oral squamous cell carcinoma patients between June 1999 and March 2015 were retrospectively reviewed. Serum CRP levels were measured preoperatively. RESULTS: The elevation of CRP levels (≥5...
February 16, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28209012/a-case-of-verruciform-xanthoma-arising-in-the-tongue
#7
Yukihiro Hiraishi, Itaru Tojyo, Norifumi Kiga, Koji Tanimoto, Shigeyuki Fujita
Verruciform Xanthoma (VX) is a rare lesion of the oral cavity. Histologically, it is characterized by papillary or verrucous proliferation of squamous epithelium and numerous foam cells. VX arising in the tongue is comparatively rare, as most cases of VX in oral cavity occur in gingiva. A 65-year-old woman was referred to our clinic with a mass on the left side of the tongue. The lesion was yellowish, and its surface was granulated. The patient had neither tenderness nor any symptoms. The lesion was clinically diagnosed to be a benign tumor, and hence, biopsy was performed, according to which it was diagnosed as hyperparakeratosis...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28208998/micrometastasis-detection-using-special-stains-in-nodal-tissues-of-oral-squamous-cell-carcinoma-a-histochemical-study
#8
Wasim Raja Mumtaz, Veda Hegde, Nikhil Yadav
INTRODUCTION: Micrometastasis to the lymph node is an important prognostic factor in survival and recurrence and even in making critical decisions regarding postoperative radiation treatment. Methods like Immunohistochemistry (IHC), serial sectioning and Polymerase Chain Reaction (PCR) are very sensitive; however, they are expensive and time consuming. Hence, there is a need for the detection of micrometastasis by method which is easily feasible and inexpensive. AIM: This study was undertaken to identify if special stains (Modified Papanicolaou stain and Ayoub Shklar stain) are valuable in detecting micrometastasis which are routinely missed in Haematoxylin and Eosin stain and also to compare their efficacy over Haematoxylin and Eosin stain in detection of metastatic tumour cells in non-metastatic lymph nodes...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28205345/differential-diagnosis-of-well-differentiated-squamous-cell-carcinoma-from-non-neoplastic-oral-mucosal-lesions-new-cytopathologic-evaluation-method-dependent-on-keratinization-related-parameters-but-not-nuclear-atypism
#9
Hitoshi Hara, Tsuneo Misawa, Eri Ishii, Miki Nakagawa, Saki Koshiishi, Kenji Amemiya, Toshio Oyama, Kazuya Tominaga, Jun Cheng, Akio Tanaka, Takashi Saku
BACKGROUND: The cytology of oral squamous cell carcinoma (SCC) is challenging because oral SCC cells tend to be well differentiated and lack nuclear atypia, often resulting in a false negative diagnosis. The purpose of this study was to establish practical cytological parameters specific to oral SCCs. METHODS: We reviewed 123 cases of malignancy and 53 of non-neoplastic lesions of the oral mucosa, which had been diagnosed using both cytology and histopathology specimens...
February 16, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28202215/erratum-to-cytoreductive-surgery-for-head-and-neck-squamous-cell-carcinoma-in-the-new-age-of-immunotherapy-oral-oncol-61-2016-166-176
#10
R Bryan Bell, Michael J Gough, Steven K Seung, Zeljka Jutric, Andrew D Weinberg, Bernard A Fox, Marka R Crittenden, Rom S Leidner, Brendan Curti
No abstract text is available yet for this article.
February 12, 2017: Oral Oncology
https://www.readbyqxmd.com/read/28199413/low-prevalence-of-human-papillomavirus-in-head-and-neck-squamous-cell-carcinoma-in-the-northwest-region-of-the-philippines
#11
Pia Marie Albano, Dana Holzinger, Christianne Salvador, Jose Orosa, Sheryl Racelis, Modesty Leaño, Danilo Sanchez, Lara Mae Angeles, Gordana Halec, Markus Schmitt, John Donnie Ramos, Michael Pawlita
BACKGROUND: Geographic heterogeneity of human papillomavirus (HPV) involvement in head and neck squamous cell carcinoma (HNSCC) has been observed over the last few years. This trend has not been evaluated in the Philippines. Hence, this study aims to provide for the first time a data on the prevalence of HPV in HNSCC in the northwestern region of the Philippines. METHODS: Two hundred one (201) biopsy samples (179 formalin fixed paraffin embedded and 22 fresh frozen) from 163 Filipino HNSCC cases (oral cavity = 88; larynx = 60; oropharynx = 15) diagnosed between 2003 to 2013 were initially included in this study...
2017: PloS One
https://www.readbyqxmd.com/read/28199027/investigating-the-level-of-salivary-endothelin-1-in-premalignant-and-malignant-lesions
#12
Tahereh Nosratzehi, Sirous Risbaf Fakour, Ebrahim Alijani, Maryam Salehi
PURPOSE: This study aimed to investigate the level of salivary endothelin-1 in premalignant and malignant lesions. MATERIALS AND METHODS: In this study, 75 cases were investigated of which 25 cases were healthy, 25 cases had oral lichen planus (OLP), and 25 cases had oral squamous cell carcinoma (OSCC). In order to collect the saliva samples, the unstimulated spitting was used. The samples were collected between 9 and 12 a.m. They were sent to the lab shortly after being collected and salivary endothelin-1 was recorded for each sample according to the instruction of factory by using enzyme-linked immunosorbent assay and optical density at a wavelength of 450 nm...
February 15, 2017: Special Care in Dentistry
https://www.readbyqxmd.com/read/28198666/design-connecting-gene-expression-with-therapeutics-for-drug-repurposing-and-development
#13
Bernard Kok Bang Lee, Kai Hung Tiong, Jit Kang Chang, Chee Sun Liew, Zainal Ariff Abdul Rahman, Aik Choon Tan, Tsung Fei Khang, Sok Ching Cheong
BACKGROUND: The drug discovery and development pipeline is a long and arduous process that inevitably hampers rapid drug development. Therefore, strategies to improve the efficiency of drug development are urgently needed to enable effective drugs to enter the clinic. Precision medicine has demonstrated that genetic features of cancer cells can be used for predicting drug response, and emerging evidence suggest that gene-drug connections could be predicted more accurately by exploring the cumulative effects of many genes simultaneously...
January 25, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28196645/oral-squamous-cell-carcinoma-in-three-related-kowari-dasyuroides-byrnei
#14
Richard Saunders, Rowena Killick, Michelle Barrows, Mark Stidworthy
We report three kowari (Dasyuroides byrnei) with squamous cell carcinoma affecting the gingiva. These cases occurred in rapid succession in a related group of individuals of similar age, suggesting a familial tendency to this condition and a typical age of presentation. Other conditions affecting the oral cavity can mimic the appearance of oral squamous cell carcinoma in this species, and so knowledge of this condition can assist the veterinarian in making rapid decisions regarding prognosis and improving the welfare of these animals...
February 11, 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28195638/significant-changes-in-sexual-behavior-after-a-diagnosis-of-human-papillomavirus-positive-and-human-papillomavirus-negative-oral-cancer
#15
Miren Taberna, Ronald C Inglehart, Robert K L Pickard, Carole Fakhry, Amit Agrawal, Mira L Katz, Maura L Gillison
BACKGROUND: Sexual behavior and oral human papillomavirus (HPV) infection are risk factors for oral squamous cell carcinoma (OSCC). The effects of OSCC diagnosis and treatment on subsequent relationship stress and sexual behavior are unknown. METHODS: Incident cases of HPV-positive or HPV-negative OSCC in patients who had a partnered relationship and partners of patients with oropharyngeal cancer were eligible for a study in which surveys were administered at diagnosis and at the 6-month follow-up time point to assess relationship distress, HPV transmission and concerns about health consequences, and sexual behavior...
February 14, 2017: Cancer
https://www.readbyqxmd.com/read/28195637/sexual-and-relationship-health-among-survivors-of-oropharyngeal-or-oral-cavity-squamous-cell-carcinoma
#16
EDITORIAL
Gypsyamber D'Souza, Hilary A Robbins
No abstract text is available yet for this article.
February 14, 2017: Cancer
https://www.readbyqxmd.com/read/28194032/tumour-specific-pi3k-inhibition-via-nanoparticle-targeted-delivery-in-head-and-neck-squamous-cell-carcinoma
#17
Aviram Mizrachi, Yosi Shamay, Janki Shah, Samuel Brook, Joanne Soong, Vinagolu K Rajasekhar, John L Humm, John H Healey, Simon N Powell, José Baselga, Daniel A Heller, Adriana Haimovitz-Friedman, Maurizio Scaltriti
Alterations in PIK3CA, the gene encoding the p110α subunit of phosphatidylinositol 3-kinase (PI3Kα), are frequent in head and neck squamous cell carcinomas. Inhibitors of PI3Kα show promising activity in various cancer types, but their use is curtailed by dose-limiting side effects such as hyperglycaemia. In the present study, we explore the efficacy, specificity and safety of the targeted delivery of BYL719, a PI3Kα inhibitor currently in clinical development in solid tumours. By encapsulating BYL719 into P-selectin-targeted nanoparticles, we achieve specific accumulation of BYL719 in the tumour milieu...
February 13, 2017: Nature Communications
https://www.readbyqxmd.com/read/28188953/minimizing-adjuvant-treatment-after-transoral-robotic-surgery-through-surgical-margin-revision-and-exclusion-of-radiographic-extracapsular-extension-a-prospective-observational-cohort-study
#18
Benoit Morisod, Ioana I Venara-Vulpe, Stephen Alzuphar, Yan Monnier, Massimo Bongiovanni, Patric Hagmann, Hanan Bouchaab, Jean Bourhis, Christian Simon
BACKGROUND: We investigated in a prospective cohort of patients treated with trans-oral robotic surgery (TORS) for oropharyngeal cancer (OPC), who were selected for the absence of radiographic extra-capsular extension (ECS) and surgically revised for inadequate margins, the possibility of reducing adjuvant radiation (RT)/chemo-radiation therapy (CRT) without jeopardizing tumor control and functional outcome. METHODS: We conducted a prospective observational cohort of patients treated with TORS for oropharyngeal cancer...
February 11, 2017: Head & Neck
https://www.readbyqxmd.com/read/28188605/-cancer-and-mycoses-and-literature-review
#19
M Develoux
Various infectious agents are classical risk factors for cancer including bacteria, viruses and parasites. There is less evidence concerning the implication of fungal infection in carcinogenesis. The role of chronic Candida infection in the development of squamous cell carcinoma has been suspected for years. Candida sp are more prevalent in potentially malignant disorder and cancer of the oral mucosa. Other epidemiological evidence of a link between Candida infection and cancer is what is observed in patients with Autoimmune Polyendocrinopathy Candidiasis Ectodermal Dystrophy (APECED)...
February 11, 2017: Bulletin de la Société de Pathologie Exotique
https://www.readbyqxmd.com/read/28187435/glucose-transporter-glut1-expression-and-clinical-outcome-in-solid-tumors-a-systematic-review-and-meta-analysis
#20
Ji Wang, Chenyang Ye, Cong Chen, Hanchu Xiong, Binbin Xie, Jichun Zhou, Yongxia Chen, Shu Zheng, Linbo Wang
Glucose transporter 1 (GLUT1), the uniporter protein encoded by the SLC2A1 gene, is a key rate-limiting factor in the transport of glucose in cancer cells, and frequently expressed in a significant proportion of human cancers. Numerous studies have reported paradoxical evidence of the relationship between GLUT1 expression and prognosis in solid human tumors. To address this discrepancy, we conducted a thorough search of Pubmed and Web of Science for studies evaluating the expression of GLUT1 and overall survival (OS) and disease-free survival (DFS) in patients with solid cancer from 1993 to April 2016...
February 7, 2017: Oncotarget
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