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https://www.readbyqxmd.com/read/29147443/4-nitroquinoline-1-oxide-induced-tongue-and-esophagus-carcinogenesis-in-obese-and-diabetic-tsod-mice
#1
Takuji Tanaka, Kunihiro Kawabata, Shigeyuki Sugie
Background: Obesity and diabetes mellitus are associated with lifestyle-related carcinogenesis. They are also risk factors of esophageal adenocarcinoma, but there are only a few reports on association between obesity/diabetes and development of squamous cell carcinoma in the oral cavity and esophagus. In this study, we therefore aimed to determine whether obesity and diabetes affect oral and esophageal carcinogenesis using model mice of obesity and diabetes, the Tsumura Suzuki obese diabetes (TSOD) and Tsumura Suzuki non-obesity (TSNO) control mice, which were treated with 4-nitroquinoline 1-oxide (4-NQO) to produce tongue and esophageal carcinomas...
August 2017: World Journal of Oncology
https://www.readbyqxmd.com/read/29142867/immunohistochemical-evaluation-of-p63-and-cyclin-d1-in-oral-squamous-cell-carcinoma-and-leukoplakia
#2
Sunit B Patel, Bhari S Manjunatha, Vandana Shah, Nishit Soni, Rakesh Sutariya
Objectives: There are only a limited number of studies on cyclin D1 and p63 expression in oral squamous cell carcinoma (OSCC) and leukoplakia. This study compared cyclin D1 and p63 expression in leukoplakia and OSCC to investigate the possible correlation of both markers with grade of dysplasia and histological grade of OSCC. Materials and Methods: The study included a total of 60 cases, of which 30 were diagnosed with OSCC and 30 with leukoplakia, that were evaluated immunohistochemically for p63 and cyclin D1 expression...
October 2017: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/29140849/endoscopic-submucosal-dissection-for-superficial-proximal-esophageal-neoplasia-is-highly-successful
#3
Yi-Qun Zhang, Tao Chen, Chen Zhang, Quan-Lin Li, Wei-Feng Chen, Li-Qing Yao, Ping-Hong Zhou, Mei-Dong Xu
OBJECTIVE: The aim of this study was to evaluate the outcomes of endoscopic submucosal dissection (ESD) for superficial proximal esophageal neoplasia. SUMMARY OF BACKGROUND DATA: The surgery for a tumor located in proximal esophagus is relatively difficult and leads to a high morbidity and mortality. ESD is a minimally invasive endoscopic treatment of superficial neoplasia of the gastrointestinal tract allowing en block resection with low recurrence rates; however, ESD for superficial proximal esophageal neoplasia is little known...
December 2017: Annals of Surgery
https://www.readbyqxmd.com/read/29135982/sting-expression-and-response-to-treatment-with-sting-ligands-in-premalignant-and-malignant-disease
#4
Jason R Baird, Zipeng Feng, Hong D Xiao, David Friedman, Ben Cottam, Bernard A Fox, Gwen Kramer, Rom S Leidner, R Bryan Bell, Kristina H Young, Marka R Crittenden, Michael J Gough
Human papilloma virus positive (HPV+) tumors represent a large proportion of anal, vulvar, vaginal, cervical and head and neck squamous carcinomas (HNSCC) and late stage invasive disease is thought to originate from a premalignant state. Cyclic dinucleotides that activate STimulator of INterferon Genes (STING) have been shown to cause rapid regression of a range of advanced tumors. We aimed to investigate STING ligands as a novel treatment for papilloma. We tested therapies in a spontaneous mouse model of papilloma of the face and anogenital region that histologically resembles human HPV-associated papilloma...
2017: PloS One
https://www.readbyqxmd.com/read/29129090/screening-and-prevention-strategies-and-endoscopic-management-of-early-esophageal-cancer
#5
James A Kim, Pari M Shah
Esophageal cancer is the 8th most common cancer worldwide and the 6th most common cause of cancer-related death. Its two main subtypes, esophageal adenocarcinoma (EAC) and esophageal squamous cell carcinoma (ESCC), have varying incidences globally, but recent decades have seen a demonstrated rise of EAC in Western countries whereas ESCC remains highly prevalent in Eastern Africa, Central Asia, and China. Screening interventions have focused on using endoscopy to identify Barrett's esophagus (BE) as a precursor to EAC, and squamous cell dysplasia prior to onset of ESCC...
October 2017: Chinese Clinical Oncology
https://www.readbyqxmd.com/read/29125138/detection-accuracy-for-epithelial-dysplasia-using-an-objective-autofluorescence-visualization-method-based-on-the-luminance-ratio
#6
Nanami Yamamoto, Koji Kawaguchi, Hisako Fujihara, Mitsuhiko Hasebe, Yuta Kishi, Masaaki Yasukawa, Kenichi Kumagai, Yoshiki Hamada
The autofluorescence visualization method (AVM) uses blue excitation light to assist in the diagnosis of epithelial dysplasia. It detects epithelial dysplasia as a black area, which is known as fluorescence visualization loss (FVL). In this study, we evaluated the detection accuracy for epithelial dysplasia of the tongue using the objective AVM and assessed its possible clinical utility. Seventy-nine tongue specimens clinically suspected to have leukoplakia or squamous cell carcinoma (SCC) were analyzed. First, the AVM was subjectively performed using the Visually Enhanced Lesion scope (VELscope), and the iodine-staining method was then performed...
November 10, 2017: International Journal of Oral Science
https://www.readbyqxmd.com/read/29116959/evaluation-of-mast-cell-density-in-the-tumor-microenvironment-in-oral-epithelial-dysplasia-and-oral-squamous-cell-carcinoma
#7
Rebeca C M Dantas, Renata O de Souza, Ludmila de F Valverde, Manuela T A Vidal, Caroline B S Sales, Letícia P Sousa, Jean N Dos Santos, Eduardo A G Ramos, Clarissa A Gurgel Rocha
The objective of this study was to compare mast cell density (MCD) in oral epithelial dysplasias (OED) and oral squamous cell carcinoma (OSCC) and determine its correlation with clinical and histopathologic parameters and the degree of tumor differentiation. Thirty OSCC samples, 14 OED samples, and 4 non-neoplastic oral mucosa samples were analyzed by immunohistochemistry to determine MCD based on the expression of MC tryptase. In addition, MCs were categorized morphologically into degranulated and granulated cells...
November 2017: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/29115209/exploring-the-use-of-ingenol-mebutate-to-prevent-non-melanoma-skin-cancer
#8
Andrés Már Erlendsson
Non-melanoma skin cancer is the most frequently occurring cancer in Caucasians today. Incidence rates in Europe have increased steadily since the 1960s and more than tripled over the last 50 years. Despite primary preventative efforts, incidences of non-melanoma skin cancer continue to rise and development of effective chemopreventative strategies is needed. In 2013, ingenol mebutate was approved in Denmark as a new topical drug for field-directed treatment for actinic keratoses. Ingenol mebutate has a dual mechanism of action, causing initial cell death, followed by an immune activation...
November 2017: Danish Medical Journal
https://www.readbyqxmd.com/read/29112567/a-pilot-study-of-the-prevalence-of-anal-human-papillomavirus-and-dysplasia-in-a-cohort-of-patients-with-ibd
#9
Ross D Cranston, Miguel Regueiro, Jana Hashash, Jonathan R Baker, Nicola Richardson-Harman, Laura Janocko, Ian McGowan
BACKGROUND: Defective cell-mediated immunity increases the risk of human papillomavirus-associated anal dysplasia and cancer. There is limited information on anal canal disease in patients with IBD. OBJECTIVE: The purpose of this study was to assess anal/vaginal human papillomavirus and anal dysplasia prevalence in patients with IBD. DESIGN: Patients had an anal examination before routine colonoscopy. SETTINGS: The study was conducted at a tertiary IBD referral center...
December 2017: Diseases of the Colon and Rectum
https://www.readbyqxmd.com/read/29112019/utility-of-p16-immunohistochemistry-in-evaluating-negative-cervical-biopsies-following-high-risk-pap-test-results
#10
Alana F Shain, Shirley Kwok, Ann K Folkins, Christina S Kong
The Lower Anogenital Squamous Terminology (LAST) Standardization Project for human papilloma virus (HPV)-associated lesions specifically recommends the use of p16 immunohistochemistry (IHC) as an adjunct to morphologic assessment of cervical biopsies interpreted as negative or low-grade squamous intraepithelial lesion (LSIL) from patients with prior high-risk Pap test results (high-grade squamous intraepithelial lesion [HSIL], atypical squamous cells cannot exclude HSIL, atypical glandular cells [AGC], or HPV16 atypical squamous cells of undetermined significance [ASC-US])...
November 3, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29100309/evaluating-oral-epithelial-dysplasia-classification-system-by-near-infrared-raman-spectroscopy
#11
Bo Li, Zhi-Yu Gu, Kai-Xiao Yan, Zhi-Ning Wen, Zhi-He Zhao, Long-Jiang Li, Yi Li
Until now, the classification system of oral epithelial dysplasia is still based on the architectural and cytological changes, which relies on the observation of pathologists and is relatively subjective. The purpose of present research was to discriminate the oral dysplasia by the near-infrared Raman spectroscope, in order to evaluate the classification system. We collected Raman spectra of normal mucosa, oral squamous cell carcinoma (OSCC) and dysplasia by near-infrared Raman spectroscope. The biochemical variations between different stages were analyzed by the characteristic peaks in the subtracted mean spectra...
September 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/29079347/the-diagnostic-value-of-the-native-fluorescence-visualization-device-for-early-detection-of-premalignant-malignant-lesions-of-the-oral-cavity
#12
Maryam Amirchaghmaghi, Nooshin Mohtasham, Zahra Delavarian, Mohammad Taghi Shakeri, Masoud Hatami, Pegah Mosannen Mozafari
PURPOSE: The present study aimed to determine the diagnostic value of a native fluorescence visualization device in the identification of oral malignant/dysplastic lesions. METHODS: This study involved 45 patients who had oral lesions that were suspected to be malignant, potentially malignant, or benign. The patients visited the Oral Medicine Department of the Mashhad Dental School. The sensitivity, specificity, positive and negative predictive values, and likelihood ratio of this device were determined...
October 24, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/29078688/endoscopic-mucosal-ablation-and-resection-of-barrett-s-esophagus-and-related-diseases
#13
REVIEW
Juan A Muñoz-Largacha, Virginia R Litle
The prevalence of gastroesophageal reflux disease as well as the incidence of Barrett's esophagus (BE) has increased in the Western world over the last decades. The chronic reflux of gastric secretions injuries the esophageal mucosa and triggers cellular and molecular changes inducing the transformation of the normal squamous mucosa into columnar metaplastic epithelium. BE is a premalignant condition that can progress to low-grade dysplasia, high-grade dysplasia and ultimately esophageal adenocarcinoma. An early diagnosis of dysplastic changes and the adoption of appropriate therapeutic approaches are essential to improve patient outcomes and survival...
2017: J Vis Surg
https://www.readbyqxmd.com/read/29072058/p16ink4a-expression-in-cervical-lesions-correlates-with-histologic-grading-a-tertiary-level-medical-facility-based-retrospective-study
#14
Usha Sarma, Ira Biswas, Alakananda Das, Gokul Chandra Das, Chandan Saikia, Bidula Sarma
p16INK4a is a tumor-suppressor protein and cyclin-dependent kinase (cdk) inhibitor that blocks cdk4- and cdk6-mediated pRb phosphorylation to inhibit E2F-dependent transcription and cell-cycle progression. Because the E7 protein of high-risk HPVs inactivates pRB, the resulting overexpression of p16INK4a may be a good marker for infection with high risk HPV types. Immunostaining of p16INK4a allows precise identification of even small CIN or cervical cancer lesions in biopsy sections and can help reduce inter-observer variation in the histopathological interpretation of cervical biopsy specimens...
October 26, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/29061560/bitter-melon-prevents-the-development-of-4-nqo-induced-oral-squamous-cell-carcinoma-in-an-immunocompetent-mouse-model-by-modulating-immune-signalling
#15
Ratna B Ray, Subhayan Sur, Robert Steele, Rajeev Aurora, Mark Vavares, Katherine E Schwetye
Head and neck squamous cell carcinoma (HNSCC) is the sixth most common cancer worldwide, and tobacco is one of the most common factors for HNSCC of the oral cavity. We have previously observed that bitter melon (Momordica charantia) extract (BME) exerts anti-proliferative activity against several cancers including HNSCC. In this study, we investigated the preventive role of BME in 4-nitroquinoline 1-oxide (4-NQO) carcinogen-induced HNSCC. We observed that BME feeding significantly reduced the incidence of 4-NQO induced oral cancer in a mouse model...
October 23, 2017: Cancer Prevention Research
https://www.readbyqxmd.com/read/29053652/a-report-on-the-clinical-pathological-correlations-of-788-gingival-lesion
#16
A Gambino, M Carbone, R Broccoletti, P Carcieri, D Conrotto, M Carrozzo, P-G Arduino
BACKGROUND: The diagnosis and treatment of a variety of non-plaque related gingival diseases have become an integrated aspect of everyday dentistry. The aim of this study was to analyse the relationship between clinical appearance and histopathological features of gingival lesions in a large Northern Italian population. MATERIAL AND METHODS: A retrospective study of 788 cases of gingival and alveolar mucosal biopsies was set up. Statistical analysis was performed by calculating the odds ratio and 95% confidence interval (C...
November 1, 2017: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/29048627/slc7a11-a-component-of-cysteine-glutamate-transporter-is-a-novel-biomarker-for-the-diagnosis-and-prognosis-in-laryngeal-squamous-cell-carcinoma
#17
Zhihong Ma, Hong Zhang, Meng Lian, Changli Yue, Gehong Dong, Yulan Jin, Rui Li, Hongfei Wan, Ru Wang, Ying Wang, Jie Zhai, Hongzhi Ma, Ling Feng, Jianfeng Han, Shuzhou Liu, Youxin Guo, Jianhua Li, Yu Liu, Jugao Fang, Honggang Liu
Solute carrier family 7, membrane 11 (SLC7A11) or (xCT) is a component of the cysteine-glutamate transporter, which plays a critical role in glutathione homeostasis which is important to protect cells from oxidative stress. SLC7A11 is distributed in various tissues and participates in the occurrence of a number of diseases, particularly in the pathogenesis of malignant tumors, but its role in laryngeal cancer development has not yet been clearly defined. The objective of the present study was to investigate the role of SLC7A11 in laryngeal squamous cell carcinoma (LSCC)...
September 20, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29031660/lichen-planus-affecting-the-female-genitalia-a-retrospective-review-of-patients-at-mayo-clinic
#18
Caoimhe M R Fahy, Rochelle R Torgerson, Mark D P Davis
BACKGROUND: Genital or vulval lichen planus (VLP) may have a disabling effect on a patient's quality of life. Evidence-based management guidelines are lacking for VLP. OBJECTIVE: We sought to review clinical presentation and treatment of patients who received a diagnosis of VLP. METHODS: The 100 consecutive patients who received a diagnosis of VLP at Mayo Clinic between January 1, 1997, and December 31, 2015, were reviewed retrospectively...
October 11, 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/29026557/aggressive-squamous-cell-carcinoma-of-the-bladder-associated-with-a-history-of-large-bladder-stone-a-case-report
#19
Manoj Hilary Fernando, Umesh Jayarajah, Kasun Bandara Herath, M Vipula Chandu de Silva, Serozsha Anura Sahadeva Goonewardena
History of large bladder stones suggests a long-standing chronic irritation of the bladder, a known risk factor for squamous cell carcinoma. Therefore, in such patients, we suggest random biopsies to detect presence of dysplasia or malignancy and a follow-up cystoscopy for early detection of a possible tumor.
October 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/29021820/introduction-of-p16-ink4a-as-a-surrogate-biomarker-for-hpv-in-women-with-invasive-cervical-cancer-in-sudan
#20
Hina Sarwath, Devendra Bansal, Nazik Elmalaika Husain, Mahmoud Mohamed, Ali A Sultan, Shahinaz Bedri
BACKGROUND: Cervical cancer is the fourth most common cancer in women worldwide with highest incidence reported in Eastern Africa in 2012. The primary goal of this study was to study the expression of p16(INK4a) in squamous cell carcinoma (SCC) of the cervix by immunohistochemistry (IHC) and determine relation with clinico-pathological parameters. This study further explored the correlation of p16(INK4a) immunostaining with another proliferation marker, Ki-67 and to study if human papillomavirus (HPV) IHC can be used as a marker for detection of virus in high-grade dysplasia...
2017: Infectious Agents and Cancer
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