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https://www.readbyqxmd.com/read/28327951/hpv16-dna-and-integration-in-normal-and-malignant-epithelium-implications-for-the-etiology-of-laryngeal-squamous-cell-carcinoma
#1
X Chen, L Gao, E M Sturgis, Z Liang, Y Zhu, X Xia, X Zhu, X Chen, G Li, Z Gao
Background: Molecular evidence suggests that human papillomavirus (HPV) has a role in the etiology of oropharyngeal squamous cell carcinoma. However, the role of HPV in laryngeal squamous cell carcinoma (LSCC) is unclear. Patients and Methods: We conducted a case-control study using tumor tissue specimens from 300 LSCC patients and vocal cord polyp specimens from 300 cancer-free controls. HPV genotype, HPV16 viral load and viral integration status, and p16 expression were determined...
January 23, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28323757/the-performance-of-human-papillomavirus-biomarkers-in-predicting-anal-high-grade-squamous-intraepithelial-lesions-in-gay-and-bisexual-men
#2
Fengyi Jin, Jennifer M Roberts, Andrew E Grulich, I Mary Poynten, Dorothy A Machalek, Alyssa Cornall, Samuel Phillips, Deborah Ekman, Ross L Mcdonald, Richard J Hillman, David J Templeton, Annabelle Farnsworth, Suzanne M Garland, Christopher K Fairley, Sepehr N Tabrizi
BACKGROUND: We evaluate the performance of human papillomavirus (HPV) biomarkers in prediction of anal histological high-grade squamous intraepithelial lesions (HSIL) in gay and bisexual men (GBM) in Sydney, Australia. DESIGN: Baseline analysis of a three-year cohort study METHODS:: The Study of the Prevention of Anal Cancer (SPANC) is natural history study of anal HPV infection in GBM aged ≥35 years. All participants completed cytological and histological assessments...
March 18, 2017: AIDS
https://www.readbyqxmd.com/read/28319413/aberrant-promoter-hypermethylation-of-p16-survivin-and-retinoblastoma-in-gastric-cancer
#3
L Guo, C Huang, Q J Ji
BACKGROUND: Gastric cancer is common and can be found throughout the world. Notoriously like other cancers, gastric cancer is a consequence of cellular regulation disorder. Epigenetics, including many oncogenes or tumour suppressor genes, can provide some clues for this kind of disorder. DNA methylation, especially promoter methylation, which causes the silence/decrease of tumour related genes, has become a focus in various tumour types. The aim of this study was to investigate promoter methylation of certain genes: p16, survivin, retinoblastoma (Rb), all of which have been regarded as genes related to gastric cancer...
2017: Bratislavské Lekárske Listy
https://www.readbyqxmd.com/read/28316325/silencing-of-the-small-gtpase-diras3-induces-cellular-senescence-in-human-white-adipose-stromal-progenitor-cells
#4
Asim Ejaz, Monika Mattesich, Werner Zwerschke
Inhibition of Akt-mTOR signaling protects from obesity and extends life span in animals. In the present study, we analyse the impact of the small GTPase, GTP-binding RAS-like 3 (DIRAS3), a recently identified weight-loss target gene, on cellular senescence in adipose stromal/progenitor cells (ASCs) derived from human subcutaneous white adipose tissue (sWAT). We demonstrate that DIRAS3 knock-down (KD) in ASCs induces activation of Akt-mTOR signaling and proliferation arrest. DIRAS3 KD ASCs lose the potential to form colonies and are negative for Ki-67...
March 17, 2017: Aging
https://www.readbyqxmd.com/read/28315964/biological-predictors-of-radiosensitivity-in-head-and-neck-squamous-cell-carcinoma
#5
Mathias Fiedler, Florian Weber, Matthias G Hautmann, Frank Haubner, Torsten E Reichert, Christoph Klingelhöffer, Stephan Schreml, Johannes K Meier, Arndt Hartmann, Tobias Ettl
OBJECTIVES: The aim of this study is to investigate the influence of prognostic biomarkers on radiosensitivity and survival of advanced head and neck squamous cell carcinomas treated by primary (chemo)radiation. MATERIAL AND METHODS: The clinicopathological data and immunohistochemical staining of p16, c-Met, survivin, PD-1, and PD-L1 of 82 primarily (chemo)irradiated patients with head and neck squamous cell carcinoma were analyzed. Associations with local and locoregional radiation response, overall survival (OS), disease-free (DFS), and disease-specific survival (DSS) were assessed...
March 18, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28314302/kras-mutant-status-may-be-associated-with-distant-recurrence-in-early-stage-rectal-cancer
#6
Michail Sideris, Jane Moorhead, Salvador Diaz-Cano, Amyn Haji, Savvas Papagrigoriadis
BACKGROUND/AIM: Total mesorectal excision combined with neo-adjuvant chemoradiotherary (CRT) and adjuvant chemotherapy, has been the standard treatment of locally advanced rectal cancer (LARC). Although TNM (Tumor, Node, Metastasis) classification for malignant Tumors is still the cornerstone in rectal cancer staging, there has been an effort to identify molecular biomarkers with additional prognostic or predictive value. MATERIALS AND METHODS: We retrospectively analyzed molecular biomarkers on prospectively collected histological specimens and clinical data from a cohort of 135 consecutive rectal cancer cases who underwent radical excision in a tertiary center between 2011-2014 (males=87, females=48, age range=22-89 years, mean=64,67 years, SD=13...
March 2017: Anticancer Research
https://www.readbyqxmd.com/read/28304400/evaluation-of-p16-ki-67-dual-stained-cytology-as-triage-test-for-high-risk-human-papillomavirus-positive-women
#7
Renée Mf Ebisch, Judith van der Horst, Meyke Hermsen, L Lucia Rijstenberg, Judith Em Vedder, Johan Bulten, Remko P Bosgraaf, Viola Mj Verhoef, Daniëlle Am Heideman, Peter Jf Snijders, Chris Jlm Meijer, Folkert J van Kemenade, Leon Fag Massuger, Willem Jg Melchers, Ruud Lm Bekkers, Albert G Siebers
The aim of this study was to evaluate the clinical utility of p16/Ki-67 dual staining, for the identification of CIN in high-risk HPV-positive women from a non-responder screening cohort. P16/Ki-67 dual staining, Pap cytology, and HPV16/18 genotyping were performed on physician-taken liquid-based samples from 495 women who tested high-risk HPV positive on self-sampled material (PROHTECT-3B study). Different triage strategies involving p16/Ki-67 dual staining were evaluated for sensitivity, specificity, and predictive value for ≥CIN2 and ≥CIN3, and compared to Pap cytology with a threshold of atypical cells of undetermined significance...
March 17, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28302536/rna-chromogenic-in-situ-hybridization-assay-with-clinical-automated-platform-is-a-sensitive-method-in-detecting-high-risk-human-papillomavirus-in-squamous-cell-carcinoma
#8
Javier E Mendez-Pena, Peter M Sadow, Vania Nose, Mai P Hoang
Detection of active human papillomavirus (HPV) is clinically important, as its presence has been shown to correlate with favorable clinical outcomes and better response to treatment in oropharyngeal squamous cell carcinomas (SCC). Using a clinical automated platform, we compared the performance of commercially available HPV DNA and RNA in situ hybridization (ISH) probes in archival tissues of 57 SCC. Importantly, a clinical automated platform gives 1) consistent and reproducible results for HPV ISH and 2) better standardization across clinical laboratories...
March 13, 2017: Human Pathology
https://www.readbyqxmd.com/read/28297760/-promoting-effect-of-cyclin-d1-overexpression-on-proliferation-and-epithelial-mesenchymal-transition-of-cervical-squamous-cell-carcinoma-siha-cells
#9
P Wang, S Liu, B Cheng, X Z Wu, S S Ding, L Xu, Y Liu, L Duan, S Z Sun
Objective: To study effects of cyclin D1 overexpression on the proliferation and differentiation of cervical squamous cell carcinoma SiHa cells and to investigate related signaling molecules. Methods: Primers were designed to amplify the full length of cyclin D1 gene and cyclin D1 gene was amplified by PCR for constructing pcDNA3.1 plasmid vector. The construct was then transfected into SiHa cells, and the cells with stable overexpression of cyclin D1 were established, cyclin D1 gene and protein expression were detected by RT-PCR and Western blot, respectively...
March 8, 2017: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/28296678/endocervical-adenocarcinoma-with-morphologic-features-of-both-usual-and-gastric-types-clinicopathologic-and-immunohistochemical-analyses-and-high-risk-hpv-detection-by-in-situ-hybridization
#10
Tomoko Wada, Yoshihiro Ohishi, Tsunehisa Kaku, Murasaki Aman, Hiroko Imamura, Nobuko Yasutake, Kenzo Sonoda, Kiyoko Kato, Yoshinao Oda
The fourth edition of the World Health Organization classification set up new entities of endocervical adenocarcinoma (ECA), namely the "usual type" and "gastric type." These 2 types are considered to be distinct histogenetically because of their differing immunophenotypes, human papillomavirus (HPV) status, and prognoses. Usual-type ECAs (U-ECAs) are virtually always associated with high-risk human papillomavirus (HR-HPV) infection. Gastric-type ECAs (G-ECAs) are believed not to be associated with HR-HPV infection...
March 14, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28295252/meta-analysis-of-biomarkers-predicting-risk-of-malignant-progression-in-barrett-s-oesophagus
#11
REVIEW
K Altaf, J-J Xiong, D De la Iglesia, L Hickey, A Kaul
BACKGROUND: Barrett's oesophagus is a precursor to the development of oesophageal adenocarcinoma. This study sought to clarify the role of genetic, chromosomal and proliferation biomarkers that have been the subjects of multiple studies through meta-analysis. METHODS: MEDLINE, Embase, PubMed and the Cochrane Library were searched for clinical studies assessing the value of p53, p16, Ki-67 and DNA content abnormalities in Barrett's oesophagus. The main outcome measure was the risk of development of high-grade dysplasia (HGD) or oesophageal adenocarcinoma...
April 2017: British Journal of Surgery
https://www.readbyqxmd.com/read/28292318/transoral-robotic-surgery-with-radial-forearm-free-flap-reconstruction-case-control-analysis
#12
Vincent L Biron, Daniel A O'Connell, Brittany Barber, Jessica M Clark, Colin Andrews, Caroline C Jeffery, David W J Côté, Jeffrey Harris, Hadi Seikaly
BACKGROUND: The resection of large oropharyngeal tumors traditionally involves a lip-splitting mandibulotomy for adequate margin visualization and free flap reconstruction of the surgical defect. Transoral robotic surgery (TORS) has emerged as a technique that can resect large and complex oropharyngeal tumors, avoiding a lip-splitting approach. The aim of this study is to compare the lip-splitting mandibulotomy approach versus TORS for the management of advanced stage oropharyngeal carcinomas...
March 14, 2017: Journal of Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28291966/molecular-characteristics-of-pancreatic-ductal-adenocarcinomas-with-high-grade-pancreatic-intraepithelial-neoplasia-panin-are-different-from-those-without-high-grade-panin
#13
Tetsuyuki Miyazaki, Yoshihiro Ohishi, Yoshihiro Miyasaka, Yasunori Oda, Shinichi Aishima, Keigo Ozono, Atsushi Abe, Eishi Nagai, Masafumi Nakamura, Yoshinao Oda
AIMS: We reported that pancreatic ductal adenocarcinomas (PDACs) without high-grade pancreatic intraepithelial neoplasia (PanIN) in the vicinity had worse prognoses than PDACs with high-grade PanIN. However, the molecular characteristics of PDACs with and without high-grade PanIN have not been compared. The aim of this study is to clarify the molecular characteristics of PDACs with and without high-grade PanIN. METHOD AND RESULTS: We reviewed all of a consecutive series of 100 patients with PDACs and divided them into 2 groups: the PDACs with PanIN-2 or PanIN-3 in the background (the PanIN-high group, n = 60) and the PDACs without PanIN-2 or PanIN-3 in the background (the PanIN-low group, n = 40)...
March 15, 2017: Pathobiology: Journal of Immunopathology, Molecular and Cellular Biology
https://www.readbyqxmd.com/read/28291123/medullary-carcinoma-of-the-penis-a-distinctive-hpv-related-neoplasm-a-report-of-12-cases
#14
Sofía Cañete-Portillo, Omar Clavero, Diego F Sanchez, Arturo Silvero, Francisco Abed, Ingrid M Rodriguez, Gustavo Ayala, Laia Alemany, Nubia Munoz, Silvia de Sanjose, Wim Quint, Francesc X Bosch, Antonio L Cubilla
A third to half of penile invasive squamous cell carcinomas are human papillomavirus (HPV) related. Warty (condylomatous), warty-basaloid, and basaloid carcinomas are the most common subtypes associated with HPV. Less frequent are clear cell and lymphoepithelioma-like carcinomas. Here we report a novel penile tumor associated with HPV. Twelve cases were selected from 1010 penile carcinomas, part of an international HPV detection study conducted at the Institut Català d'Oncologia, Barcelona, Spain. Immunostaining with p16 was performed on all cases, and HPV-mRNA detection was also performed...
April 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28287417/the-effect-of-chinese-herbal-medicine-formula-mkg-on-allergic-asthma-by-regulating-lung-and-plasma-metabolic-alternations
#15
Meng Yu, Hong-Mei Jia, Feng-Xia Cui, Yong Yang, Yang Zhao, Mao-Hua Yang, Zhong-Mei Zou
Asthma is a chronic inflammatory disorder of the airway and is characterized by airway remodeling, hyperresponsiveness, and shortness of breath. Modified Kushen Gancao Formula (mKG), derived from traditional Chinese herbal medicines (TCM), has been demonstrated to have good therapeutic effects on experimental allergic asthma. However, its anti-asthma mechanism remains currently unknown. In the present work, metabolomics studies of biochemical changes in the lung tissue and plasma of ovalbumin (OVA)-induced allergic asthma mice with mKG treatment were performed using ultra high-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF/MS)...
March 10, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28287250/changes-in-the-expression-of-cyclin-dependent-kinase-inhibitors-during-differentiation-of-immortalized-fibroblasts-into-adipocytes
#16
Ibon Alonso, Antonio Baroja, Blanca Fernández, Raquel Vielba, Jon Elorriaga, Jairo Pérez-Sanz, Juan Aréchaga, Juan J Goiriena de Gandarias, Carmen de la Hoz
The mechanisms implicated in the differentiation of fibroblastic precursors into adipocytes can be analyzed in vitro using cell models, such as the 3T3-L1 cell line. Since cell differentiation involves an exit from the cell cycle, it is likely that molecules that inhibit proliferation participate in the control of adipogenesis. This study was aimed at determining the role, if any, of several cyclin-dependent kinase (CDK)-inhibitors and the transcription factor C/EBPα in the process of adipocyte differentitation...
2017: International Journal of Developmental Biology
https://www.readbyqxmd.com/read/28286417/molecular-mechanism-of-g1-arrest-and-cellular-senescence-induced-by-lee011-a-novel-cdk4-cdk6-inhibitor-in-leukemia-cells
#17
Yan-Fang Tao, Na-Na Wang, Li-Xiao Xu, Zhi-Heng Li, Xiao-Lu Li, Yun-Yun Xu, Fang Fang, Mei Li, Guang-Hui Qian, Yan-Hong Li, Yi-Ping Li, Yi Wu, Jun-Li Ren, Wei-Wei Du, Jun Lu, Xing Feng, Jian Wang, Wei-Qi He, Shao-Yan Hu, Jian Pan
BACKGROUND: Overexpression of cyclin D1 dependent kinases 4 and 6 (CDK4/6) is a common feature of many human cancers including leukemia. LEE011 is a novel inhibitor of both CDK4 and 6. To date, the molecular function of LEE011 in leukemia remains unclear. METHODS: Leukemia cell growth and apoptosis following LEE011 treatment was assessed through CCK-8 and annexin V/propidium iodide staining assays. Cell senescence was assessed by β-galactosidase staining and p16(INK4a) expression analysis...
2017: Cancer Cell International
https://www.readbyqxmd.com/read/28286387/immunohistochemistry-of-five-molecular-markers-for-typing-and-management-of-ameloblastomas-a-retrospective-analysis-of-40-cases
#18
Thasvir Singh, Arun Chandu, John Clement, Christopher Angel
PURPOSE: The aims of this study are to elucidate if molecular markers can be used to differentiate between the two main types of ameloblastoma (unicystic and solid/multicystic), and to determine whether a biologically 'less-aggressive' subtype exists. METHODS: A retrospective analysis of 33 solid/multicystic ameloblastomas and six unicystic ameloblastomas was completed using immunohistochemistry for five molecular markers: P16, P53, MMP-9, Survivin, and Ki-67. Tumors were graded as either negative or positive (mild, moderate, strong), and the results were related to both ameloblastoma subtypes and outcomes following treatment...
March 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28286271/p16-deficiency-promotes-nonalcoholic-steatohepatitis-via-regulation-of-hepatic-oxidative-stress
#19
Fangqiao Lv, Jun Wu, Dengshun Miao, Wei An, Yutong Wang
Nonalcoholic steatohepatitis (NASH) is characterized by excess accumulation of lipids in liver, accompanied with hepatocyte injury, cell death and inflammation. Although p16is known as tumor suppressor in multiple cancer types, it remains unclear whether p16 plays a critical role in NASH. To determine whether p16 could play a role in the pathogenesis of NASH, wild-type mice and p16(-/-) mice were fed on a methionine and choline-deficient (MCD) diet for 3 weeks, and liver steatosis, fibrosis, and inflammation were evaluated...
March 9, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28286205/ochratoxin-a-induced-premature-senescence-in-human-renal-proximal-tubular-cells
#20
Xuan Yang, Sheng Liu, Chuchu Huang, Haomiao Wang, Yunbo Luo, Wentao Xu, Kunlun Huang
Ochratoxin A (OTA) has many nephrotoxic effects and is a promising compound for the study of nephrotoxicity. Human renal proximal tubular cells (HKC) are an important model for the study of renal reabsorption, renal physiology and pathology. Since the induction of OTA in renal senescence is largely unknown, whether OTA can induce renal senescence, especially at a sublethal dose, and the mechanism of OTA toxicity remain unclear. In our study, a sublethal dose of OTA led to an enhanced senescent phenotype, β-galactosidase staining and senescence associated secretory phenotype (SASP)...
March 9, 2017: Toxicology
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