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p53 carcinoma larynx

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https://www.readbyqxmd.com/read/27699544/cancer-immunology-and-hpv
#1
Barbara Wollenberg
HNSCC is a heterogeneous group of tumors located in the oral cavity, oropharynx, hypopharynx and larynx. Originally, tobacco and alcohol exposures were the main risk factors for HNSCC. In the last two decades, HPV infections have been identified as a risk factor for HNSCC, especially for oropharyngeal tumors. Whereas the HPV-induced oropharyngeal carcinomas predominantly express the HPV16 related E6 and E7 oncoproteins, the HPV-negative HNSCC are associated with an overexpression of p53. However, if the therapy successes for HPV-negative and HPV-positive HNSCCs are compared, there are significantly higher total survival rates for HPV-positive oropharyngeal tumors compared to HPV-negative tumors...
2017: Recent Results in Cancer Research
https://www.readbyqxmd.com/read/26413216/gene-and-mirna-expression-changes-in-squamous-cell-carcinoma-of-larynx-and-hypopharynx
#2
Jayalakshmi Nair, Prachi Jain, Udita Chandola, Vinayak Palve, N R Harsha Vardhan, Ram Bhupal Reddy, Vikram D Kekatpure, Amritha Suresh, Moni Abraham Kuriakose, Binay Panda
Laryngo-pharyngeal squamous cell carcinomas are one of the most common head and neck cancers. Despite the presence of a large body of information, molecular biomarkers are not currently used in the diagnosis, treatment and management of patients for this group of cancer. Here, we have profiled expression of genes and microRNAs of larynx and hypopharynx tumors using high-throughput sequencing experiments. We found that matrix metalloproteinases along with SCEL, CRNN, KRT4, SPINK5, and TGM3 among others have significantly altered expression in these tumors...
July 2015: Genes & Cancer
https://www.readbyqxmd.com/read/26087991/delta-np63-alpha-%C3%A2-responsive-microrna-modulate-the-expression-of-metabolic-enzymes
#3
Edward A Ratovitski
MicroRNAs, whose transcription is regulated by members of the tumor protein p53 family, modulate the expression of numerous metabolic enzymes, significantly altering tumor cell response to chemotherapeutic treatments. The role for ΔNp63α-regulated microRNAs in regulation of cell cycle arrest, apoptosis and autophagy in squamous cell carcinoma (SCC) cells upon cisplatin exposure has been reported. The current study indicated that the selected microRNA targets differentially regulated by ΔNp63α in cisplatin-sensitive and cisplatin-resistant SCC cells could alter the expression of a few metabolic enzymes, thereby potentially contributing to the metabolic changes in SCC cells upon cisplatin exposure...
2015: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/25677091/human-papillomavirus-status-and-p16-ink4a-expression-in-patients-with-mucosal-squamous-cell-carcinoma-of-the-head-and-neck-in-queensland-australia
#4
Annika Antonsson, Rachel E Neale, Samuel Boros, Guy Lampe, William B Coman, David I Pryor, Sandro V Porceddu, David C Whiteman
BACKGROUND: The last decade has seen changes in the epidemiology of mucosal squamous cell carcinomas of the head and neck (HNSCCs), with increasing numbers of cases attributable to human papillomavirus (HPV) infection. We sought to determine the prevalence of HPV and p16(INK4a) expression in Australian HNSCC patients and to identify predictors of HPV-positivity. METHODS: We recruited 248 HNSCC patients with histologically confirmed primary SCC of the oropharynx, oral cavity, hypopharynx or larynx diagnosed between 2004 and 2010...
April 2015: Cancer Epidemiology
https://www.readbyqxmd.com/read/25558642/the-expression-of-egfr-cerbb2-p16-and-p53-and-their-relationship-with-conventional-parameters-in-squamous-cell-carcinoma-of-the-larynx
#5
Hülya Şimşek, Ünsal Han, Binnur Önal, Gülçin Şimişek
BACKGROUND/AIM: To investigate the expression of epidermal growth factor receptor-HER1 (EGFR), cerbB2 (HER2), p16, and p53, as well as the relationship of the expression of these genes with conventional parameters in squamous cell carcinoma (SCC) of the larynx. MATERIALS AND METHODS: Samples from 92 cases of diagnosed laryngeal SCC between 2001 and 2011 from the Pathology Department of Ministry of Health Ankara D1şkapi Yildirinm Beyazit Teaching & Research Hospital were studied by immunohistochemistry using EGFR, cerbB2, p16, and p53 antibodies...
2014: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/24614717/chromosome-instability-predicts-progression-of-premalignant-lesions-of-the-larynx
#6
Verona E Bergshoeff, Stijn J A Van der Heijden, Annick Haesevoets, Sophie G H Litjens, Fredrik J Bot, Adri C Voogd, Michelene N Chenault, Anton H N Hopman, Ed Schuuring, Jacqueline M Van der Wal, Johannes J Manni, Frans C S Ramaekers, Bernd Kremer, Ernst-Jan M Speel
The histopathology of premalignant laryngeal lesions does not provide reliable information on the risk of malignant transformation, hence we examined new molecular markers which can easily be implemented in clinical practice. Dual-target fluorescence in situ hybridisation (FISH) for chromosome 1 and 7 centromeres was performed on tissue sections of laryngeal premalignancies in 69 patients. Chromosome instability was indicated by numerical imbalances and/or polysomy for chromosomes 1 and 7. Additionally, immunostainings for p53, Cyclin D1 and (p)FADD expression were evaluated...
April 2014: Pathology
https://www.readbyqxmd.com/read/24595081/investigation-of-recurrence-risk-in-laryngeal-cancer-following-laser-surgery
#7
Erdinç Cekiç, Ozgür Sürmelioǧlu, Ozgür Tarkan, Süleyman Ozdemir, Aysun Uǧuz, Mete Kıroǧlu
BACKGROUND: The general prognostic factors in larynx tumors are believed to be tumor stage, anatomical location, histological differentiation and the presence of neck metastasis. Effects of tumor invasion to sub-regions of larynx (anterior commissure, ventricle, subglottic space) and over-expression of p53, c-erb-B2 and Ki67 detected immunohistochemically on development of recurrence in patients were investigated in this study. METHODS: Twenty patients (Group 1) in whom recurrence had developed and 20 others (Group 2) without recurrence during follow-up were included in this study...
January 1, 2013: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/24427552/ki67-p27-and-p53-expression-in-squamous-epithelial-lesions-of-larynx
#8
Debashri Mondal, Kaushik Saha, Chhanda Datta, Uttara Chatterjee, Arunabho Sengupta
Precise assessment of the biological behavior and progression of squamous epithelial lesions of the larynx with a view to predict the prognosis and therapeutic challenges remains an elusive goal. The knowledge and data regarding the expression of proliferative markers indicating the biological activity in different histological grades of squamous epithelial lesions are lacking till date. To evaluate the relationship between Ki67, p27 and p53 expression as well as topographic distribution of Ki67 with the histological subtypes or grades of laryngeal squamous intraepithelial and invasive lesions...
April 2013: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/24064928/associations-of-tp53-mutations-codon-72-polymorphism-and-human-papillomavirus-in-head-and-neck-squamous-cell-carcinoma-patients
#9
Qi Shi, Kang Xiao, Wei Wei, Bao-Yun Zhang, Cao Chen, Yin Xu, Li-Na Chen, Yun-Tao Song, Xiao Ma, Nai-Song Zhang, Xiao-Ping Dong
To investigate the possible associations between mutations in TP53 and phenotypes of single-nucleotide polymorphisms (SNPs) in codon 72 (SNP72) with the expression profiles of p53 and human papillomavirus (HPV) infection, 93 pathologically diagnosed head and neck squamous cell carcinomas (HNSCCs) were included for study. Using PCR and direct sequencing, 45 TP53 mutations in 35 cases (37.6%) were confirmed out of the 93 HNSCCs. P53 immunohistochemistry (IHC) confirmed 34 (36.6%) cases with positive staining, including 22 cases with strong and 12 with weak positivity...
December 2013: Oncology Reports
https://www.readbyqxmd.com/read/23797720/papillary-squamous-cell-carcinoma-of-the-head-and-neck-clinicopathologic-and-molecular-features-with-special-reference-to-human-papillomavirus
#10
Mitra Mehrad, Danielle H Carpenter, Rebecca D Chernock, Hongwei Wang, Xiao-Jun Ma, Yuling Luo, Jingqin Luo, James S Lewis, Samir K El-Mofty
A relationship between human papillomavirus (HPV) infection and papillary squamous cell carcinoma (PSCC) has been suggested. However, to date, no studies have thoroughly and directly evaluated for transcriptional activity of the virus or the clinicopathologic significance of HPV-positive PSCC. Forty-eight cases of PSCC were retrieved from our surgical pathology database and were reviewed by 4 study pathologists, with tumors defined as SCC with a significant component of papillary growth in the tumor. Immunohistochemical analysis for p16 and p53 was performed...
September 2013: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/23724261/the-role-of-p53-and-mdm2-in-head-and-neck-cancer
#11
N Denaro, C Lo Nigro, G Natoli, E G Russi, V Adamo, M C Merlano
Head and neck cancer is a complex disorder that includes mostly squamous cell carcinomas that can develop in the throat, larynx, nose, sinuses, and mouth. Etiopathogenesis is due to tobacco and alcohol consumption and to infection by human papillomavirus (HPV) type 16/18. Tumors often develop within preneoplastic fields of genetically altered cells. Most head and neck cancers result from multistep accumulation of genetic alterationsm resulting in clonal outgrowth of transformed cells. These DNA changes are caused by a variety of mechanisms like endogenous mutations and exogenous mutations...
2011: ISRN Otolaryngology
https://www.readbyqxmd.com/read/23564160/from-laryngeal-epithelial-precursor-lesions-to-squamous-carcinoma-of-the-larynx-the-role-of-cell-cycle-proteins-and-%C3%AE-catenin
#12
Fernando López, César Alvarez-Marcos, Marta Alonso-Guervós, Francisco Domínguez, Carlos Suárez, Mario A Hermsen, José L Llorente
Novel markers to accurately predict the risk of malignant transformation in laryngeal epithelial precursor lesions (EPL) are needed. We tried to identify some molecular alterations occurring in laryngeal tumorigenesis. In this study, 60 paraffin-embedded EPL and 17 metachronous invasive carcinomas were immunostained for markers associated with proliferation (Ki67), cell cycle control (p53, p21, p16, p27, cyclin D1), and cell adhesion and invasion (laminin and β-catenin). Aberrant expression of p16 and p53 and positivity at cytoplasm for β-catenin and cyclin D1 were detected significantly in EPL with progression to invasive laryngeal carcinoma...
November 2013: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/23400686/cyclin-d1-egfr-and-akt-mtor-pathway-potential-prognostic-markers-in-localized-laryngeal-squamous-cell-carcinoma
#13
D Dionysopoulos, K Pavlakis, V Kotoula, E Fountzilas, K Markou, I Karasmanis, N Angouridakis, A Nikolaou, K T Kalogeras, G Fountzilas
INTRODUCTION: EGFR (epidermal growth factor receptor), cyclin D1 and Akt/mTOR pathways are active in head and neck cancer. The aim of this study was to explore biomarker expression, their correlations with clinicopathological parameters and their prognostic utility in a cohort of patients with localized squamous laryngeal carcinoma. PATIENTS AND METHODS: We assessed relative messenger RNA expression of EGFR, Akt1, 2, and 3, mTOR and CCND1, copy number variants of the EGFR and CCND1 genes and immunohistochemical protein expression of EGFR, p-Akt308, p-Akt473, pmTOR, PTEN, p53 and cyclin D1 in paraffin-embedded tissue samples of localized laryngeal carcinomas...
March 2013: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
https://www.readbyqxmd.com/read/23368763/evaluation-of-naproxen-and-cromolyn-activities-against-cancer-cells-viability-proliferation-apoptosis-p53-and-gene-expression-of-survivin-and-caspase-3
#14
Tarek M K Motawi, Yasser Bustanji, Shohda El-Maraghy, Mutasem O Taha, Mohamed A S Al-Ghussein
We previously reported the inhibitory profiles of naproxen and cromolyn against glycogen synthase kinase-3β, which partly explain the molecular mechanisms of their anti-cancer properties. In this study, we performed a detailed biochemical evaluation of the two drugs against colorectal adenocarcinoma (Caco2), hepatocellular carcinoma (HepG2), mammary gland carcinoma (MCF7), epitheloid cervix carcinoma (Hela), lung carcinoma (A5W9) and epidermoid larynx carcinoma (Hep2) cell lines. Additionally, we performed cellular viability tests using trypan blue, proliferation MTT assay, apoptosis, p53 and real-time polymerase chain reaction for gene expression of survivin and caspase-3...
April 2014: Journal of Enzyme Inhibition and Medicinal Chemistry
https://www.readbyqxmd.com/read/23320061/basics-of-tumor-development-and-importance-of-human-papilloma-virus-hpv-for-head-and-neck-cancer
#15
Claus Wittekindt, Steffen Wagner, Christina Sabine Mayer, Jens Peter Klussmann
Head and Neck Squamous Cell Carcinomas (HNSCC) are the 6(th) most common cancers worldwide. While incidence rates for cancer of the hypopharynx and larynx are decreasing, a significant increase in cancer of the oropharynx (OSCC) is observed. Classical risk factors for HNSCC are smoking and alcohol. It has been shown for 25 to 60% of OSCC to be associated with an infection by oncogenic human papilloma viruses (HPV). The development of "common" cancer of the head and neck is substantially enhanced by an accumulation of genetic changes, which lead to an inactivation of tumor suppressor genes or activation of proto-oncogenes...
2012: GMS Current Topics in Otorhinolaryngology, Head and Neck Surgery
https://www.readbyqxmd.com/read/23193747/the-prognostic-value-of-p53-bcl-2-and-bax-expression-in-laryngeal-cancer
#16
Pleumjit Boonyaphiphat, Kowit Pruegsanusak, Paramee Thongsuksai
OBJECTIVE: Determine the prognostic value of p53, Bcl-2 and Bax expression in cancer of the larynx. MATERIAL AND METHOD: Ninety-four patients diagnosed with laryngeal squamous cell carcinoma were analyzed for 5-year overall survival in relation to immunohistochemical expression of p53, Bcl-2, and Bax proteins. RESULTS: The present study included 86 males and eight females with a mean age of 65.1 years. Half of the patients (51%) were in stages III and IV...
October 2012: Journal of the Medical Association of Thailand, Chotmaihet Thangphaet
https://www.readbyqxmd.com/read/23114912/mutations-in-the-d-loop-region-and-increased-copy-number-of-mitochondrial-dna-in-human-laryngeal-squamous-cell-carcinoma
#17
Wei Guo, Denghua Yang, Hongbo Xu, Yang Zhang, Junwei Huang, Zheng Yang, Xiaohong Chen, Zhigang Huang
The effects of D-loop mutations and the mtDNA copy number alterations in LSCC are poorly understood. Herein, we investigated the features and roles of somatic mutations of the D-loop region and copy number alterations in mtDNA of LSCC. Using direct sequencing and real-time quantitative PCR, we examined D-loop mutations and mtDNA copy number in LSCC tissues, paracancerous normal tissues and peripheral vein blood samples from 40 LSCC patients. A student's t test, ANOVA test and χ(2) test were used to analyze association among mutations, mtDNA copy number alterations with clinicopathologic parameters...
January 2013: Molecular Biology Reports
https://www.readbyqxmd.com/read/22456913/-basics-of-tumor-development-and-importance-of-human-papilloma-virus-hpv-for-head-and-neck-cancer
#18
REVIEW
C Wittekindt, S Wagner, C S Mayer, J P Klußmann
Head and Neck Squamous Cell Carcinoma (HNSCC) are the 6th most common cancers worldwide. While the incidence of larynx-hypopharynx carcinoma decreases, actually an increase in oropharyngeal squamous cell carcinoma (OSCC) is observed. Classical risk factors for HNSCC are smoking and alcohol. Though, it was shown recently for 25 to 60% of OSCC, to be associated with an infection by oncogenic human papilloma virus (HPV). The development of "common" head-neck-tumors is substantially enhanced by an accumulation of genetic changes, which lead to an inactivation of tumor suppressor genes or to an activation of proto-oncogenes...
March 2012: Laryngo- Rhino- Otologie
https://www.readbyqxmd.com/read/22413021/pten-as-a-prognostic-and-predictive-marker-in-postoperative-radiotherapy-for-squamous-cell-cancer-of-the-head-and-neck
#19
RANDOMIZED CONTROLLED TRIAL
Miroslaw Snietura, Magdalena Jaworska, Joanna Mlynarczyk-Liszka, Aleksandra Goraj-Zajac, Wojciech Piglowski, Dariusz Lange, Grzegorz Wozniak, Elzbieta Nowara, Rafal Suwinski
BACKGROUND: Tumor suppressor PTEN is known to control a variety of processes related to cell survival, proliferation, and growth. PTEN expression is considered as a prognostic factor in some human neoplasms like breast, prostate, and thyroid cancer. METHODOLOGY/PRINCIPAL FINDINGS: In this study we analyzed the influence of PTEN expression on the outcome of a randomized clinical trial of conventional versus 7-days-a-week postoperative radiotherapy for squamous cell cancer of the head and neck...
2012: PloS One
https://www.readbyqxmd.com/read/22310835/possible-implication-of-mdm2-as-a-prognostic-marker-in-invasive-laryngeal-carcinoma
#20
Marcela K Hassumi-Fukasawa, Fabiana A Miranda-Camargo, Márcia C M Guimarães, Renata T Simões, Eduardo A Donadi, Christiane P Soares, Edson G Soares
Laryngeal squamous cell carcinoma is one of the most common malignant neoplasms of the head and neck. In Brazil, laryngeal tumors represent 2% of all cancers and are associated with approximately 3,000 deaths annually. Human papillomavirus (HPV) has been reported to play an important role in the etiology of laryngeal cancer. The aim of the present study was to evaluate the expression of p53, p27, and Mdm2 in laryngeal carcinomas. Sixty-three larynx biopsies were selected for the study, including 9 in situ laryngeal carcinomas, 27 laryngeal carcinomas without metastasis and 27 laryngeal carcinomas with metastasis...
July 2012: European Archives of Oto-rhino-laryngology
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