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Oral squamous cell carcinoma

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https://www.readbyqxmd.com/read/28091876/hypermethylation-of-ifn-%C3%AE-in-oral-cancer-tissues
#1
Songbo Tian, Chunyang Jiang, Xiaoqin Liu, Sheng Xu, Zhiyong Zhang, Huizhen Chen, Yinghuai Zhang, Yanping Liu, Dong Ma
OBJECTIVES: The study aimed to evaluate the methylation pattern of the interferon-gamma (IFN-γ) gene in oral cancer tissues compared with normal and benign oral disease tissues. MATERIALS AND METHODS: The oral tissues were gained from the patients of 85 cases of oral squamous cell carcinoma (OSCC), 47 cases of oral dysplastic lesions, and 53 normal biopsies. IFN -γ methylation in oral tissues was verified through methylation-specific polymerase chain reaction (PCR) and DNA sequencing analyses, and the expression levels of IFN-γ messenger RNA (mRNA) and protein were detected using real-time reverse transcription (RT)-PCR and enzyme-linked immunosorbent assays, respectively...
January 13, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28090628/erk1-2-jnk-and-stat3-activation-and-correlation-with-tumor-differentiation-in-oral-scc
#2
I Gkouveris, N Nikitakis, D Avgoustidis, M Karanikou, G Rassidakis, A Sklavounou
Signal transducer and activator of transcription 3 (STAT3) and mitogen activated protein kinases (MAPKs), including ERK and JNK, have been implicated in oral squamous cell carcinoma (OSCC) development and progression. Our purpose was to evaluate the levels of activated STAT3, ERK1/2 and JNK by immunohistochemistry in OSCC and to investigate possible correlations of these molecules with each other as well as with the degree of tumor differentiation. Immunohistochemical assessment of the phosphorylated levels of STAT3(tyrosine/ serine), ERK1/2 and JNK was performed in 60 OSCC, including well, moderately and poorly differentiated tumors...
January 16, 2017: Histology and Histopathology
https://www.readbyqxmd.com/read/28089494/downregulation-of-mir-1-enhances-tumorigenicity-and-invasiveness-in-oral-squamous-cell-carcinomas
#3
Chih-Yu Peng, Yi-Wen Liao, Ming-Yi Lu, Chuan-Hang Yu, Cheng-Chia Yu, Ming-Yung Chou
BACKGROUND/PURPOSE: Cumulative evidence suggest that microRNAs (miRNAs) function as biosignatures of oral squamous cell carcinomas (OSCC). However, the functional roles of miR-1 as well as its downstream targets in the regulation of tumorigenicity in OSCC remain unclear. METHODS: miRNAs RT-PCR analysis was performed to identify miR-1 as a putative candidate on mediating invasiveness of OSCC cells. Consequently, we elucidated the tumorigenicity of OSCC cells with miR-1 downregulation or overexpression, respectively...
January 12, 2017: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/28088212/ultrasensitive-detection-of-oncogenic-human-papillomavirus-in-oropharyngeal-tissue-swabs
#4
Andre Isaac, Morris Kostiuk, Han Zhang, Cameron Lindsay, Fawaz Makki, Daniel A O'Connell, Jeffrey R Harris, David W J Cote, Hadi Seikaly, Vincent L Biron
BACKGROUND: The incidence of oropharyngeal squamous cell carcinoma (OPSCC) caused by oncogenic human papillomavirus (HPV) is rising worldwide. HPV-OPSCC is commonly diagnosed by RT-qPCR of HPV E6 and E7 oncoproteins or by p16 immunohistochemistry (IHC). Droplet digital PCR (ddPCR) has been recently reported as an ultra-sensitive and highly precise method of nucleic acid quantification for biomarker analysis. To validate the use of a minimally invasive assay for detection of oncogenic HPV based on oropharyngeal swabs using ddPCR...
January 14, 2017: Journal of Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28081307/the-demographics-and-histopathological-features-of-oral-cavity-cancers-in-turkey
#5
Mehmet Düzlü, Recep Karamert, Faruk Kadri Bakkal, Raşit Cevizci, Hakan Tutar, Mehmet Ekrem Zorlu, Alper Dilci, Fakih Cihat Eravcı
BACKGROUND/AIM: This study aimed to examine the demographics and histopathological features of oral cavity cancers (OCCs) managed in our clinic. MATERIALS AND METHODS: Patients who were diagnosed with OCCs in the Gazi University Otorhinolaryngology Department between the years 1993 and 2013 were retrospectively enrolled in the study. Surgical archive charts and pathology records were reviewed in detail regarding the anatomical and histopathological profiles of the tumors, as well as the demographic data of the patients...
December 20, 2016: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28081185/upregulated-expression-of-transient-receptor-potential-cation-channel-subfamily-v-receptors-in-mucosae-of-patients-with-oral-squamous-cell-carcinoma-and-patients-with-a-history-of-alcohol-consumption-or-smoking
#6
Akiko Sakakibara, Shunsuke Sakakibara, Junya Kusumoto, Daisuke Takeda, Takumi Hasegawa, Masaya Akashi, Tsutomu Minamikawa, Kazunobu Hashikawa, Hiroto Terashi, Takahide Komori
OBJECTIVES: Transient receptor potential cation channel (subfamily V, members 1-4) (TRPV1-4) are expressed in skin and neurons and activated by external stimuli in normal mucosae of all oral cavity sites. The oral cavity is exposed to various stimuli, including temperature, mechanical stimuli, chemical substances, and changes in pH, and, notably, the risk factors for oncogenic transformation in oral squamous epithelium are the same as the external stimuli received by TRPV1-4 receptors...
2017: PloS One
https://www.readbyqxmd.com/read/28080906/oral-squamous-cell-carcinoma-in-an-aged-captive-white-rhinoceros-ceratotherium-simum
#7
Sandra Langer, Nadine Czerwonka, Kerstin Ternes, Dr Werner Herbst, Kernt Koehler
A 48-yr-old captive white rhinoceros ( Ceratotherium simum ) was euthanized due to old age, pododermatitis, and progressive laminitis of the middle toe of the left fore- and hindlimbs. Severe chronic necrotizing periodontitis and dental loss was diagnosed, although food intake prior to death had not decreased. In addition, extensive ulceration of the tongue was noted. Histologically, squamous cell carcinoma of the tongue was diagnosed with chronic severe ulcerative glossitis. Metastatic lesions were not detected...
December 2016: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28075474/isomahanine-induces-endoplasmic-reticulum-stress-and-simultaneously-triggers-p38%C3%A2-mapk-mediated-apoptosis-and-autophagy-in-multidrug-resistant-human-oral-squamous-cell-carcinoma-cells
#8
Tanyarath Utaipan, Anan Athipornchai, Apichart Suksamrarn, Surasak Chunsrivirot, Warangkana Chunglok
Advanced oral squamous cell carcinoma (OSCC) is typically aggressive and closely correlated with disease recurrence and poor survival. Multidrug resistance (MDR) is the most critical problem leading to therapeutic failure. Investigation of novel anticancer candidates targeting multidrug-resistant OSCC cells may provide a basis for developing effective strategies for OSCC treatment. In the present study, we investigated the cytotoxic mechanism of a carbazole alkaloid, namely isomahanine, in a multidrug‑resistant OSCC cell line CLS-354/DX...
January 4, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28073194/verruciform-xanthoma-of-the-penis-a-rare-benign-lesion-that-simulates-carcinoma
#9
Aldo Franco De Rose, Mattia Tosi, Guglielmo Mantica, Nataniele Piol, Carlo Toncini, Carlo Terrone
Verruciform xanthoma is a rare and benign condition predominantly affecting the oral cavity, but also skin and female anogenital mucosa. It can be flat, papular-warty or crateriform-cystic. Furthermore it can simulate HPV viral lesion such as condyloma and malignant neoplasia such as verrucous squamous cell carcinoma. An accurate diagnosis is important to avoid overtreatment, considering it is a benign lesion that does not require any radical treatment. We present an extremely rare case of a 64 year-old man with a small, slighty raised, gray reddish-dotted lesion on the left portion of the ventral side of his glans...
December 30, 2016: Archivio Italiano di Urologia, Andrologia
https://www.readbyqxmd.com/read/28071620/squamous-cell-carcinoma-of-the-oral-cavity-and-oropharynx-in-patients-aged-18-45-years-a-case-control-study-to-evaluate-the-risk-factors-with-emphasis-on-stress-diet-oral-hygiene-and-family-history
#10
K P Dholam, G C Chouksey
BACKGROUND: Increasing incidence of squamous cell carcinoma (SCC) of the oral cavity and oropharynx is reported in young adults. However, there is a paucity regarding etiology and risk factors. AIM: To evaluate the exposure potential carcinogenic factors among a sample aged 45 years and younger, diagnosed with SCC of the oral cavity and oropharynx. METHODOLOGY: Eighty-five case samples aged 18-45 years, diagnosed with SCC of the oral cavity and oropharynx were compared with 85 controls who had never had cancer, matched for age and sex...
April 2016: Indian Journal of Cancer
https://www.readbyqxmd.com/read/28071618/clinico-pathological-factors-affecting-lymph-node-yield-in-indian-patients-with-locally-advanced-squamous-cell-carcinoma-of-mandibular-gingivo-buccal-sulcus
#11
S S Muttagi, B R Patil, A S Godhi, D K Arora, S R Hallikerimath, A D Kale
AIM: Lymph node yield (LNY) is a valid marker of prognosis in oral cancer. Precise estimation of LNY in Indian patients with T3/T4 gingivobuccal sulcus squamous cell carcinoma (GBS-SCC) has not been well documented. Hence, the primary objective of the study was to determine the LNY in patients with T3/T4 SCC of mandibular GBS, and the secondary objective was to study the association of LNY with clinicopathological factors such as tumor thickness, histological differentiation, number of positive nodes, and extracapsular spread (ECS)...
April 2016: Indian Journal of Cancer
https://www.readbyqxmd.com/read/28070573/nanoparticle-delivery-of-wnt-1-sirna-enhances-photodynamic-therapy-by-inhibiting-epithelial-mesenchymal-transition-for-oral-cancer
#12
Chuan Ma, Leilei Shi, Yu Huang, Lingyue Shen, Hao Peng, Xinyuan Zhu, Guoyu Zhou
Activation of the epithelial to mesenchymal transition (EMT) in photodynamic therapy (PDT) can lead to the recurrence and progression of tumors. To enhance the effects of PDT, it is essential to inhibit the Wnt/β-catenin signaling pathway involved in EMT progression. Herein, we used polyethylene glycol-polyethyleneimine-chlorin e6 (PEG-PEI-Ce6) nanoparticles to efficiently deliver Wnt-1 small interfering RNA (siRNA) to the cytoplasm of KB cells (oral squamous cell carcinoma) that were subjected to PDT. Wnt-1 siRNA effectively inhibited the Wnt/β-catenin signaling pathway, reducing the expression of Wnt-1, β-catenin and vimentin that are crucial to the EMT...
January 10, 2017: Biomaterials Science
https://www.readbyqxmd.com/read/28065218/clinical-observation-of-bevacizumab-combined-with-s-1-in-the-treatment-of-pretreated-advanced-esophageal-carcinoma
#13
Nie Ke-Ke, Geng Chuan-Xin, Zhang Ling, Liu Shi-Chao, Zhang Zhong-Fa, Wang Rong, Zou Xiao, Ji You-Xin
Objective To investigate the clinical effects and safety of bevacizumab combined with S-1 as the second-line treatment of recurrent and/or metastatic esophageal cancer after chemoradiation. Methods Patients with recurrent or metastatic esophageal cancer after chemoradiation were treated with bevacizumab and S-1. Bevacizumab was used by intravenous infusion, 7.5mg/kg body weight on day 1; S-1 was used by oral at 80mg/m(2)·d on day 1-14, 21 days as a cycle of treatment and repeated until either pro- gressive disease or intolerable toxicity occurred...
November 20, 2016: Chinese Medical Sciences Journal, Chung-kuo i Hsüeh K'o Hsüeh Tsa Chih
https://www.readbyqxmd.com/read/28064216/prevalence-of-egfr-tyrosine-kinase-domain-mutations-in-head-and-neck-squamous-cell-carcinoma-cohort-study-and-systematic-review
#14
REVIEW
Christos Perisanidis
BACKGROUND: Mutations in the epidermal growth factor receptor (EGFR) tyrosine kinase domain (TKD) are associated with response and resistance to targeted therapy. The EGFR mutation status in patients with advanced oral and oropharyngeal squamous cell carcinoma (OOSCC) was evaluated. A systematic literature review was undertaken to summarize current evidence and estimate the overall prevalence of EGFR TKD mutations in patients with head and neck squamous cell carcinoma (HNSCC). MATERIALS AND METHODS: Genomic DNA was extracted from formalin-fixed, paraffin-embedded tumor samples of 113 patients with OOSCC...
January 2017: In Vivo
https://www.readbyqxmd.com/read/28063998/inhibiting-ros-nf-%C3%AE%C2%BAb-dependent-autophagy-enhanced-brazilin-induced-apoptosis-in-head-and-neck-squamous-cell-carcinoma
#15
Zhi-Jing He, Fei-Ya Zhu, Shi-Sheng Li, Liang Zhong, Hong-Yu Tan, Kai Wang
Autophagy modulation has been considered a potential therapeutic strategy for head and neck squamous cell carcinoma (HNSCC). A previous study confirmed that brazilin might possess significant anti-carcinogenic activity. However, whether brazilin induces autophagy and its roles in cell death in HNSCC are still unclear. In this study, we have shown that brazilin induced significant apoptosis in the Cal27 HNSCC cell line but not in oral keratinocyte cell line (OKC). In addition to showing apoptosis induction, we demonstrated the brazilin-induced autophagic response in the Cal27 cells, as evidenced by the formation of GFP-LC3 puncta, and also showed the upregulation of LC3-II and Beclin-1...
January 4, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28061796/glucose-transporter-4-promotes-head-and-neck-squamous-cell-carcinoma-metastasis-through-the-trim24-ddx58-axis
#16
Yu-Chan Chang, Li-Hsing Chi, Wei-Ming Chang, Chia-Yi Su, Yuang-Feng Lin, Chi-Long Chen, Ming-Huang Chen, Peter Mu-Hsin Chang, Alex T H Wu, Michael Hsiao
BACKGROUND: Head and neck squamous cell carcinoma (HNSCC) represents a unique and major health concern worldwide. Significant increases in glucose uptake and aerobic glycolysis have been observed in HNSCC cells. Glucose transporters (GLUTs) represent a major hub in the glycolysis pathway, with GLUT4 having the highest glucose affinity. However, GLUT4's role in HNSCC has not been fully appreciated. METHODS: An in silico analysis was performed in HNSCC cohorts to identify the most significant glucose transporter associated with HNSCC patient prognosis...
January 7, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28061360/effect-of-formalin-fixation-on-surgical-margins-in-patients-with-oral-squamous-cell-carcinoma
#17
Tejashree B Pangare, Pushkar P Waknis, Shilpa S Bawane, Mayank N Patil, Shaliki Wadhera, Padmasree B Patowary
PURPOSE: Formalin fixation causes shrinkage of surgical margins, which can result in the underestimation of tumor-free margins. The purpose of this study was to show the effect of formalin fixation on surgical margins. Another aim of this study was to evaluate surgical margin shrinkage after fixation of oral squamous cell carcinoma (OSCC) specimens of the gingivobuccal sulcus (GBS). MATERIALS AND METHODS: This was a cross-sectional study. The study sample consisted of OSCC specimens of the GBS after composite resection...
December 12, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28061358/prognostic-factors-of-oral-squamous-cell-carcinoma-in-young-patients-a-systematic-review
#18
REVIEW
Everton Freitas de Morais, Rodrigo Porpino Mafra, Amanda Katarinny Goes Gonzaga, Dyego Leandro Bezerra de Souza, Leão Pereira Pinto, Éricka Janine Dantas da Silveira
PURPOSE: The objective of this review was to identify clinical and pathologic factors related to the prognosis of oral squamous cell carcinoma in young patients. MATERIALS AND METHODS: We conducted a literature search of articles indexed in PubMed (MEDLINE), Scopus, and Science Direct. Prospective and retrospective cohort studies published in English, Portuguese, or Spanish were included. An age threshold of 45 years was established for the purpose of selection...
December 21, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28058215/more-than-skin-deep-potential-nicotinamide-treatment-applications-in-chronic-kidney-transplant-recipients
#19
REVIEW
Andrew G Bostom, Basma Merhi, Joanna Walker, Leslie Robinson-Bostom
Non-melanoma cutaneous carcinomas, or skin cancers, predominantly squamous cell carcinomas (SCCs), are the most common malignancies occurring in kidney transplant recipients (KTRs). Squamous cell carcinoma risk is dramatically elevated in KTRs, occurring at rates of up 45-250 times those reported in general populations. New non-melanoma skin cancers in KTRs with a prior non-melanoma skin cancer also develop at 3-times the rate reported in non-KTRs with the same clinical history. The unique aggressiveness of SCCs in KTRs increases patient morbidity, due to the high rate of new lesions requiring treatment, frequently surgical excision...
December 24, 2016: World Journal of Transplantation
https://www.readbyqxmd.com/read/28057425/oral-phaeohyphomycosis-in-a-patient-with-squamocellular-carcinoma-of-the-lip-second-case-report
#20
Suanni Lemos de Andrade, André Ferraz Goiana Leal, Armando Marsden Lacerda Filho, Danielle Patrícia Cerqueira Macêdo, Maria do Carmo Carvalho de Abreu E Lima, Rejane Pereira Neves
This communication reports the second known case of oral phaeohyphomycosis in a patient with squamocellular carcinoma of the lip. The patient, an 82-year-old black woman, a former smoker (for more than 30 years), suffering from an ulcerous vegetative lesion in the middle third of the lower lip for approximately 12 months. The result of the histopathological analysis indicated carcinoma, with well-differentiated keratinized squamous cells and the presence of septate mycelial filaments. In the direct mycological examination, thick and dematiaceous septate mycelial filaments were observed...
December 22, 2016: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
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