Oral Biology and Oral Pathology Commons^™

Proliferative Verrucous Leukoplakia Progressing To Squamous Cell Carcinoma: A Case Report, Magdalena Orlowska Dds, Felipe Nör Dds, Ms, Phd, Robert Eber Dds, Ms, Stephanie Munz Dds, David Tindle Dds, Ms

The Journal of the Michigan Dental Association

Proliferative verrucous leukoplakia (PVL) is an uncommon type of oral leukoplakia characterized by white patches featuring verrucoid areas. It is a condition of idiopathic origin, displaying a strong tendency to transform into squamous cell carcinoma, verrucous carcinoma, or the newly described particulate carcinoma. PVL is more commonly found in elderly women who have had leukoplakic lesions for many years. Although PVL may be found virtually anywhere in the oral cavity, the buccal mucosa, gingiva, and tongue are the most common sites. In this case, we describe a lesion of this nature found in an elderly male patient. PVL is difficult …

Natural Remedies To Combat Aberrant Hallmark Signatures Including Altered Glycosylation In Oral Carcinoma, Kruti A. Mehta, Jayendra B. Patel, Prabhudas S. Patel

Research Symposium

Background: Tobacco associated oral cancers remain a major concern in India with higher incidence and mortality making it an Indian-centric burning issue. To combat this dreadful disease, we investigated effects of certain natural compounds on the hallmark signatures including glycosylation transcripts levels in oral carcinoma.

Methods: The tongue carcinoma cells- SAS cells were treated with tobacco compounds, natural compounds and Cisplatin. RNA was isolated from the cells and converted to cDNA. RT-qPCR was performed to evaluate expression levels of various genes.

Results: The treatment of tobacco compounds resulted in similar pattern of altered makers (ST3GAL1, NEU3, FUT5, FUT6, MMP2, BCL2) …

Assessment Of Microrna (Mir)-365 Effects On Oral Squamous Carcinoma Cell Line Phenotypes, Jeffery Coon, Karl Kingsley

Dental Medicine Faculty Research

miR-365 is a microRNA that regulates transcription and has been demonstrated to promote oncogenesis and metastasis in some cancers while suppressing these effects in others. Virtually no information is known about the presence or function of miR-365 in oral cancers. Based upon this information, the primary goal of this project was to evaluate the expression of miR-365 in existing oral cancer cell lines. Five commercially available oral cancer cell lines (SCC4, SCC9, SCC15, SCC25, and CAL27) were obtained and cultured. RNA was then screened by PCR using primers specific for miR-365, as well as matrix metalloproteinase (MMP-2) and a downstream …

The Potential Of Raman Spectroscopy In The Diagnosis Of Dysplastic And Malignant Oral Lesions, Ola Ibrahim, M. Toner, Steven Flint, Hugh Byrne, Fiona Lyng

Articles

Early diagnosis, treatment and/or surveillance of oral premalignant lesions are important in preventing progression to oral squamous cell carcinoma (OSCC). The current gold standard is through histopathological diagnosis, which is limited by inter and intra observer and sampling errors. The objective of this work was to use Raman spectroscopy to discriminate between benign, mild, moderate and severe dysplasia and OSCC in formalin fixed paraffin preserved (FFPP) tissues. The study included 72 different pathologies from which 17 were benign lesions, 20 mildly dysplastic, 20 moderately dysplastic, 10 severely dysplastic and 5 invasive OSCC. The glass substrate and paraffin wax background were …

Biomedical Applications Of Vibrational Spectroscopy: Oral Cancer Diagnostics, Hugh Byrne, Isha Behl, Genecy Calado, Ola Ibrahim, M. Toner, Sheila Galvin, Claire M. Healy, Steven Flint, Fiona Lyng

Articles

Vibrational spectroscopy, based on either infrared absorption or Raman scattering, has attracted increasing attention for biomedical applications. Proof of concept explorations for diagnosis of oral potentially malignant disorders and cancer are reviewed, and recent advances critically appraised. Specific examples of applications of Raman microspectroscopy for analysis of histological, cytological and saliva samples are presented for illustrative purposes, and the future prospects, ultimately for routine, chairside in vivo screening are discussed.

Expression Of Mir-720 Is Correlated With Dnmt3 In Oral Squamous Cell Carcinomas, Andrew Graves, Sukhdeep Sandhu, Karl Kingsley

Dental Medicine Faculty Research

Background: Many factors are involved with cellular differentiation and pluripotency, such as long non-coding and microRNAs (miRNA). miR-720 has been demonstrated to affect development, differentiation and pluripotency in dental pulp stem cells but has also been linked to many cancers (renal, prostate, skin, colorectal, breast, cervical and esophageal) through shared pathways including DNA methyltransferase family members (DNMT)3a and DNMT3b, which are highly upregulated in many oral cancers. However, little is known about the expression (or function, if expressed) of miR-720 in oral cancers. Based upon this lack of information, the primary objective of this project was to evaluate the expression …

Patient Concerns Inventory Head And Neck As An Individualised Approach To Assess Post-Treatment Outcomes Among Oral Cancer Patients In Malaysia, Aminnudin Ainon Natrah

Student Works (2020-2029)

Background: Oral cancer and its treatment undisputedly impacts patients‘ quality of life, posing a challenge to clinicians in managing them optimally. Identifying patients‘ concerns is central to holistic patient care; as such time constraints faced by clinicians during consultation sessions may pose a barrier in identifying such concerns effectively. The use of PCI-H&N during post-treatment oral cancer consultation sessions has previously shown to be beneficial, simultaneously promoting effective patient- clinician communication during consultations. Objectives: This study aimed to determine the feasibility of the PCI-H&N in assessing post- treatment oral cancer patients concerns and its relationship with patients‘ HRQoL, psychological distress …

Differential Microrna Expression Of Mir-21 And Mir-155 With Oral Cancer Extracellular Vesicles In Response To Melationin, Matthew Hunsaker, Greta Barba, Karl Kingsley, Katherine M. Howard

Dental Medicine Faculty Research

Objective: Extracellular vesicles derived from oral cancer cells, which include Exosomes and Oncosomes, are membranous vesicles secreted into the surrounding extracellular environment. These extracellular vesicles can regulate and modulate oral squamous cell carcinoma (OSCC) progression through the horizontal transfer of bioactive molecules including proteins, lipids and microRNA (miRNA). The primary objective of this study was to examine the potential to isolate and evaluate extracellular vesicles (including exosomes) from various oral cancer cell lines and to explore potential differences in miRNA content. Methods: The OSCC cell lines SCC9, SCC25 and CAL27 were cultured in DMEM containing 10% exosome-free fetal bovine serum. …

Expression Of Zeb Factors In Oral Squamous Cell Carcinoma., Saira Ahmed

Electronic Theses and Dissertations

Objectives: The ZEB family of transcription factors (ZEB1 and ZEB2) have been demonstrated to play a role in metastatic progression of several cancers, and may also influence the initial transformation and generation of cancer stem cells. However, the expression pattern of ZEB proteins in the development of oral squamous cell carcinoma has not been investigated. The purpose of this study was to define changes in expression and subcellular localization of the ZEB family in both precancerous lesions and different grades of OSCC. Materials and Methods: Seventy-nine tongue biopsies were subjected to immunohistochemistry and immunofluorescence to determine the expression and subcellular …

Salivary Mmp-9 In The Detection Of Oral Squamous Cell Carcinoma, Andre Peisker, Gregor F. Raschke, Mina D. Fahmy, Arndt Guentsch, Korosh Roshanghias, Joschka Hennings, Stefan Schultze-Mosgau

School of Dentistry Faculty Research and Publications

Background: Oral squamous cell carcinoma (OSCC) is the most common malignant tumour of the oral cavity. Detection of OSCC is currently based on clinical oral examination combined with histopathological evaluation of a biopsy sample. Direct contact between saliva and the oral cancer makes measurement of salivary metalloproteinase- 9 (MMP-9) an attractive alternative.

Material and Methods: In total, 30 OSCC patients and 30 healthy controls were included in this prospective study. Saliva samples from both groups were collected, centrifuged and supernatant fluid was subjected to ELISA for assessment of MMP-9. The median salivary MMP-9 values with interquartile range (IQR) of OSCC …

Longterm Quality Of Life After Oncologic Surgery And Microvascular Free Flap Reconstruction In Patients With Oral Squamous Cell Carcinoma, Andre Peisker, Gregor F. Raschke, Arndt Guentsch, Korosh Roshanghias, Francy Eichmann, Stefan Schultze-Mosgau

School of Dentistry Faculty Research and Publications

Background: Quality of life (QoL) has become increasingly important in cancer treatment. It refers to the patient’s perception of the effects of the disease and therapy, and their impact on daily functioning and general feeling of well being. Material and Methods: In this prospective study, a total of 100 patients treated at our institution, completed the European Organization for Research and Treatment of Cancer (EORTC) QLQ-C30 questionnaire and the specific EORTC QLQ-H&N35 module. The questionnaires were distributed to the patients between 12 and 60 months postoperatively. Results: Global QoL score was 58.3 and mean score for functioning scale was 76.7. …

Cyclin D1 Amplification In Tongue And Buccal Mucosa Squamous Cell Carcinoma., Haydar M. Mahdey

Student Works (2010-2019)

Introduction Oral cancer is a significant health problem worldwide with almost 300,000 new cases are diagnosed each year. Despite the numerous studies done, and even with the best treatment option utilized, more than 50% of patients with oral cancer will experience relapse. In search for better options for prognostication, researches are now focusing on the molecular biology of cancer, for instance in search of reliable tumor markers. Among the markers reported in the literatures, Cyclin D1 is actively studied protein. Cyclin D1 regulates the cell cycle progression by forming a complex with different cyclin dependant kinase. Dysregulation of cyclin D1 …

Oral Cancer Prevalence In Virginia, Karin C. Loftin, Michele Darby, Stacey Plichta, Sophie Thompson, Shreeram Kumar, Louis Abbey

Dental Hygiene Faculty Publications

Purpose. Oral and pharyngeal cancer affects 30,000 Americans a year and kills one fourth of those diagnosed. The primary risk factors for oral cancer are past or present cigarette and tobacco usage, and alcohol consumption in conjunction with tobacco use. Even though the prevalence of oral cancer is relatively low in the younger age groups, this group is most likely to benefit from intervention programs designed to change risky behavior such as smoking, and to prevent oral cancer in the later years. The goal of the study was to identify high-risk target areas for an oral cancer prevention program in …