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McCready ZR, Kanjirath P, Jham BC. Oral cancer knowledge, behavior, and attitude among osteopathic medical students. JOURNAL OF CANCER EDUCATION : THE OFFICIAL JOURNAL OF THE AMERICAN ASSOCIATION FOR CANCER EDUCATION 2015; 30:231-236. [PMID: 24882439 DOI: 10.1007/s13187-014-0675-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Approximately 21,000 osteopathic medical students were enrolled in the USA in 2012-2013. These future physicians are being educated with an emphasis on a holistic or patient-centered approach, with a focus on preventive care. Considering the importance of preventive care and early diagnosis in the outcomes of oral malignancies, our goal in this study was to assess the knowledge, behavior, and attitude of osteopathic medical students in relation to oral cancer. To this end, 204 second-year (Y2) and 194 fourth-year (Y4) medical students were invited to participate in an electronic survey. Forty-one Y2 and 44 Y4 students agreed to participate (20 and 22% response rate, respectively). The results showed that most Y2 and Y4 students were knowledgeable in certain areas (demographic features, important risk factors, and histologic feature), but deficient in others (clinical presentation, association of human papillomavirus (HPV) with oropharyngeal cancers, and screening recommendations). Head, neck, and oral examination habits were reported as being performed occasionally. Overall, students reported feeling uninformed about oral cancer and showed an interest in receiving further education on the subject. Our findings confirm that an overall improvement in oral cancer education in the medical curriculum is needed. Interprofessional collaboration between dental and medical schools may prove to be a valid approach to achieve this goal, which may possibly lead to increased detection of early oral cancerous lesions and, ultimately, improved mortality rates.
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Affiliation(s)
- Zachary R McCready
- College of Dental Medicine-Illinois, Midwestern University, 555 31st Street, Downers Grove, IL, 60515, USA
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252
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Possible role for interleukins as biomarkers for mortality and recurrence in oral cancer. Int J Biol Markers 2015; 30:e262-6. [PMID: 25838055 DOI: 10.5301/jbm.5000142] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/21/2015] [Indexed: 11/20/2022]
Abstract
BACKGROUND Salivary and serum levels of interleukin-6 (IL-6) and interleukin-8 (IL-8) have previously been studied in oral cancer with conflicting results. METHODS We designed a controlled study to assess the correlation between pretreatment salivary and serum levels of IL-6 and IL-8, and all-cause survival and cancer recurrence in oral cancer patients. RESULTS Fifty-two oral cancer patients and 52 healthy control cases were selected. In univariate analysis, salivary IL-6 and IL-8 seemed to be more expressed in cases (p<0.001 and p = 0.010, respectively). Multivariate analysis showed that higher pretreatment saliva IL-6 levels were significantly associated with better survival (hazard ratio [HR] = 8.62; 95% confidence interval [95% CI], 1.21-62.50; p = 0.031). CONCLUSIONS To date, this is the largest prospective controlled study that has analyzed the pretreatment salivary and serum levels of IL-6 and IL-8 in oral cancer patients, suggesting salivary IL-6 as a possible prognostic biomarker. But further validation in a larger sample is still necessary.
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253
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Expression of myeloid zinc finger 1 and the correlation to clinical aspects of oral squamous cell carcinoma. Tumour Biol 2015; 36:7099-105. [DOI: 10.1007/s13277-015-3419-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Accepted: 03/31/2015] [Indexed: 01/14/2023] Open
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Expression of Prostanoid EP3 Receptors in Oral Squamous Epithelium and Oral Squamous Cell Carcinoma. PATHOLOGY RESEARCH INTERNATIONAL 2015; 2015:602929. [PMID: 25741449 PMCID: PMC4337040 DOI: 10.1155/2015/602929] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2014] [Revised: 12/14/2014] [Accepted: 01/06/2015] [Indexed: 11/17/2022]
Abstract
Objectives. To carry out a descriptive analysis of the expression of the EP3 receptors of PGE2 in different histological grades of OSCC and adjacent normal epithelium. Material and Methods. A total of 46 patients presenting with various histological subtypes and grades of OSCC were recruited from Maxillofacial Surgery Department of Nishtar Institute of Dentistry Multan. Microscopically tumour subtyping and histological grading according to Anneroth's grading system were carried out. Immunohistochemical staining with rabbit polyclonal EP3 receptor antibody was performed and sections were scored for intensity and proportion of positive adjacent squamous epithelial and tumour cells. Results. Out of 46 patients n = 28 (60.9%) were well differentiated, n = 15 (32.6%) were moderately differentiated, and only n = 3 (6.5%) were poorly differentiated. All n = 46 cases of OSCC were positive for EP3 receptor antibody, n = 14 (30.4%) cases had strong intensity of anti EP3 antibody staining in tumour tissue, n = 17 (37%) cases showed moderate intensity, and n = 15 (32.6%) cases showed weak intensity. Conclusion. Prostanoid EP3 receptors are widely but variably expressed in OSCC. Most of well differentiated OSCC cases show a moderate to strong expression of EP3 receptors. However, insignificant statistical relation to histological grades of OSCC has been observed. This might be due to small sample size of the study.
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255
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Bagan JV, Carbonell F, Gómez MJ, Sánchez M, Navarro A, Leopoldo M, Bagán L, Zapater E. Extra-nodal B-cell non-Hodgkin's lymphomas of the head and neck: a study of 68 cases. Am J Otolaryngol 2015; 36:57-62. [PMID: 25456517 DOI: 10.1016/j.amjoto.2014.10.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Accepted: 10/04/2014] [Indexed: 12/16/2022]
Abstract
OBJECTIVES The objectives of this study are to describe the distinctive characteristics of extra-nodal B-cell non-Hodgkin's lymphomas (BNHLs) located in the head and neck in a series of patients, to discuss patient survival, and to compare the oral versus the non-oral locations of the extra-nodal BNHLs of the head and neck. MATERIAL AND METHODS We studied 68 patients with BNHL of the head and neck. We analyzed the clinical and survival characteristics. Additionally, we performed Kaplan-Meier and Cox regression analyses to determine the influence of the different factors on survival. RESULTS This study included 68 non-nodal lymphomas; 30 lymphomas (31.9%) were located intraorally, with the gingiva as the most frequent location. The oral lymphomas in stages 1 and 2 showed a prevalence of 60% (18/30). The Kaplan-Meier analysis showed that the stage of disease and the oral versus non-oral extranodal lymphomas were significant prognostic factors (p<0.05). However, the multivariate Cox analysis indicated that only complete remission and oral versus non-oral location were significant prognostic factors (p<0.01). CONCLUSIONS The gingiva was the most common location of the intraoral lymphomas. Complete remission and non-oral location were the only significant survival factors in the multivariate Cox regression analysis.
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Affiliation(s)
- Jose V Bagan
- Department of Oral Medicine, Valencia University, Valencia, Spain; Department of Oral and Maxillofacial Surgery, University General Hospital, Valencia, Spain.
| | - Felix Carbonell
- Department of Hematology, Valencia University, Valencia, Spain; Department of Hematology, University General Hospital, Valencia, Spain
| | - Maria J Gómez
- ENT Unit, University General Hospital, Valencia, Spain
| | - Magdalena Sánchez
- Department of Hematology, University General Hospital, Valencia, Spain
| | - Atilio Navarro
- Department of Pathology, University General Hospital, Valencia, Spain
| | - Manuel Leopoldo
- Department of Oral and Maxillofacial Surgery, University General Hospital, Valencia, Spain
| | - Leticia Bagán
- Department of Oral Medicine, Valencia University, Valencia, Spain
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256
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Manoharan S, Rajasekaran D, Prabhakar MM, Karthikeyan S, Manimaran A. Modulating Effect of Enicostemma littorale on the Expression Pattern of Apoptotic, Cell Proliferative, Inflammatory and Angiogenic Markers During 7, 12-Dimethylbenz (a) Anthracene Induced Hamster Buccal Pouch Carcinogenesis. Toxicol Int 2015; 22:130-40. [PMID: 26862274 PMCID: PMC4721161 DOI: 10.4103/0971-6580.172276] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Enicostemma littorale leaves are traditionally used for the treatment of several diseases, including inflammation and cancer. This study has taken effort to explore the antitumor initiating potential of E. littorale leaves (ElELet) by analyzing the expression pattern of apoptotic (p53, Bcl-2 and Bcl-2 associated X-protein), cell-proliferative (cyclin D1 and proliferating cell nuclear antigen), angiogenic (vascular endothelial growth factor), invasive (matrix metalloproteinase-2 and 9), and inflammatory (NF-κB and cyclooxygenase-2) markers during 7, 12-dimethylbenz (a) anthracene (DMBA) induced hamster buccal pouch carcinogenesis. Oral tumors were induced in the buccal pouches of hamsters using the potent site and organ specific carcinogen, DMBA. DMBA application 3 times a week for 14 weeks resulted in tumor formation in the buccal pouches. Hundred percent tumor formations with dysregulation in the expression pattern of apoptotic, cell proliferative, inflammatory, angiogenic, and invasive markers were observed in the buccal pouches of hamsters treated with DMBA alone. ElELet at a dose of 250 mg/kg body weight orally to DMBA treated hamsters significantly prevented the tumor formation as well as corrected the abnormalities in the expression pattern of above mentioned molecular markers. ElELet thus modulated the expression pattern of all the above mentioned molecular markers in favor of the suppression of cell proliferation occurring in DMBA induced hamster buccal pouch carcinogenesis.
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Affiliation(s)
- Shanmugam Manoharan
- Department of Biochemistry and Biotechnology, Annamalai University, Chidambaram, Tamil Nadu, India
| | - Duraisamy Rajasekaran
- Department of Biochemistry and Biotechnology, Annamalai University, Chidambaram, Tamil Nadu, India
| | | | - Sekar Karthikeyan
- Department of Biochemistry and Biotechnology, Annamalai University, Chidambaram, Tamil Nadu, India
| | - Asokan Manimaran
- Department of Biochemistry and Biotechnology, Annamalai University, Chidambaram, Tamil Nadu, India
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257
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Philiponis G, Kagan SH. Speaking legibly: Qualitative perceptions of altered voice among oral tongue cancer survivors. Asia Pac J Oncol Nurs 2015; 2:250-256. [PMID: 27981121 PMCID: PMC5123506 DOI: 10.4103/2347-5625.158020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
OBJECTIVE Treatment for oral tongue cancer poses unique challenges to restoring and maintaining personally acceptable, intelligible speech. METHODS We report how oral tongue cancer survivors describe their speech after treatment in a qualitative descriptive approach using constant comparative technique to complete a focal analysis of interview data from a larger grounded theory study of oral tongue cancer survivorship. Interviews were completed with 16 tongue cancer survivors 3 months to 12 years postdiagnosis with stage I-IV disease and treated with surgery alone, surgery and radiotherapy, or chemo-radiation. All interview data from the main study were analyzed for themes describing perceptions of speech as oral tongue cancer survivors. RESULTS Actual speech impairments varied among survivors. None experienced severe impairments that inhibited their daily lives. However, all expressed some level of concern about speech. Concerns about altered speech began when survivors heard their treatment plans and continued through to survivorship without being fully resolved. The overarching theme, maintaining a pattern and character of speech acceptable to the survivor, was termed "speaking legibly" using one survivor's vivid in vivo statement. Speaking legibly integrate the sub-themes of "fears of sounding unusual", "learning to talk again", "problems and adjustments", and "social impact". CONCLUSIONS Clinical and scientific efforts to further understand and address concerns about speech, personal presentation, and identity among those diagnosed with oral tongue are important to improving care processes and patient-centered experience.
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Affiliation(s)
| | - Sarah H Kagan
- School of Nursing, University of Pennsylvania, Philadelphia, PA, USA
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258
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Shao Y, Sha XY, Bai YX, Quan F, Wu SL. Effect of A disintegrin and metalloproteinase 10 gene silencing on the proliferation, invasion and migration of the human tongue squamous cell carcinoma cell line TCA8113. Mol Med Rep 2014; 11:212-8. [PMID: 25333745 PMCID: PMC4237091 DOI: 10.3892/mmr.2014.2717] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2014] [Accepted: 09/18/2014] [Indexed: 01/05/2023] Open
Abstract
The present study aimed to investigate the effect of A disintegrin and metalloproteinase 10 (ADAM10) gene silencing on the proliferation, migration and invasion of the human tongue squamous cell carcinoma cell line TCA8113. RNA interference was used to knock down the expression of ADAM10 in the TCA8113 cell line and the proliferation, migration and invasive ability of the treated cells were observed in vitro. The expression levels of epidermal growth factor receptor (EGFR) and E-cadherin in the treated cells were determined by western blot analysis. The proliferation, migration and invasion abilities of cells in the ADAM10 siRNA-treated group were significantly lower than those in the control groups (P<0.05). In addition, compared with the control groups, the expression levels of EGFR and E-cadherin in the ADAM10 siRNA-treated cells were significantly decreased (P<0.05) and increased (P<0.05), respectively. These results suggested that ADAM10 is important in regulating the proliferation, invasion and migration of the human tongue squamous cell carcinoma cell line TCA8113 and that the mechanism may, at least in part, be associated with the upregulation of EGFR and the downregulation of E-cadherin.
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Affiliation(s)
- Yuan Shao
- Department of Otorhinolaryngology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Xiao-Ying Sha
- The Sixth Hepatic Disease Ward, The Affiliated Xi'an Eighth Hospital, Medical College of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Yan-Xia Bai
- Department of Otorhinolaryngology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Fang Quan
- Department of Otorhinolaryngology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Sheng-Li Wu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
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259
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Güneri P, Epstein JB. Late stage diagnosis of oral cancer: components and possible solutions. Oral Oncol 2014; 50:1131-6. [PMID: 25255960 DOI: 10.1016/j.oraloncology.2014.09.005] [Citation(s) in RCA: 103] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Revised: 08/06/2014] [Accepted: 09/06/2014] [Indexed: 02/02/2023]
Abstract
Stage of disease at the diagnosis of oral cancer is thought to be a significant factor in prognosis and outcome (International Agency for Research on Cancer/World Health Organization, 2014). Unfortunately, we continue to diagnose almost 2/3 of these cancers at advanced stages of disease despite the ongoing research for devices/methods to aid the clinicians in detection and accurate oral mucosal lesion diagnosis. This paper explores both the nature of oral cancer and the adjuncts available for detection, and presents the current issues in diagnostic delays of oral cancer detection.
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Affiliation(s)
- Pelin Güneri
- Department of Oral and Maxillofacial Radiology, Ege University, School of Dentistry, Bornova 35100, İzmir, Turkey.
| | - Joel B Epstein
- Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA; Division of Otolaryngology and Head and Neck Surgery City of Hope National Medical Center, Duarte CA, 8500 Whilshire Blvd, Suite 800, Beverly Hills, CA 90211, USA
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260
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The oral microbiome diversity and its relation to human diseases. Folia Microbiol (Praha) 2014; 60:69-80. [PMID: 25147055 DOI: 10.1007/s12223-014-0342-2] [Citation(s) in RCA: 188] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Accepted: 08/11/2014] [Indexed: 02/07/2023]
Abstract
As one of the most clinically relevant human habitats, the human mouth is colonized by a set of microorganisms, including bacteria, archaea, fungi, and viruses. Increasing evidence has supported that these microbiota contribute to the two commonest oral diseases of man (dental caries and periodontal diseases), presenting significant risk factors to human health conditions, such as tumor, diabetes mellitus, cardiovascular diseases, bacteremia, preterm birth, and low birth weight in infants. It is widely accepted that oral microorganisms cause diseases mainly by a synergistic or cooperative way, and the interspecies interactions within the oral community play a crucial role in determining whether oral microbiota elicit diseases or not. Since a comprehensive understanding of the complex interspecies interactions within a community needs the knowledge of its endogenous residents, a plenty of research have been carried out to explore the oral microbial diversity. In this review, we focus on the recent progress in this field, including the oral microbiome composition and its association with human diseases.
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261
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Li KC, Hua KT, Lin YS, Su CY, Ko JY, Hsiao M, Kuo ML, Tan CT. Inhibition of G9a induces DUSP4-dependent autophagic cell death in head and neck squamous cell carcinoma. Mol Cancer 2014; 13:172. [PMID: 25027955 PMCID: PMC4107555 DOI: 10.1186/1476-4598-13-172] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Accepted: 07/07/2014] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Head and neck squamous cell carcinoma (HNSCC) is a common cancer worldwide. Emerging evidence indicates that alteration of epigenetics might be a key event in HNSCC progression. Abnormal expression of histone methyltransferase G9a, which contributes to transcriptional repression of tumor suppressors, has been implicated in promoting cancerous malignancies. However, its role in HNSCC has not been previously characterized. In this study, we elucidate the function of G9a and its downstream mechanism in HNSCC. METHODS We investigated the clinical relevance of G9a in HNSCC using immunohistochemistry (IHC) staining. In vitro cell proliferation and tumorigenesis ability of G9a-manipulated HNSCC cells were examined with MTT assays, clonogenic assays, and soft agar assays. We examined different routes of cell death in HNSCC cells induced by G9a-depletion or enzymatic inhibition by immunoblot, flow cytometry, fluorescent and transmission electron microscopy analysis. Specific targets of G9a were identified by affymetrix microarray and quantitative reverse transcription-polymerase chain reaction (qRT-PCR). Lastly, functions of G9a in vivo were confirmed with a xenograft tumor model. RESULTS G9a expression is positively correlated to proliferation marker Ki-67 and to poor prognosis in HNSCC patients. Genetic or pharmacological inhibition of G9a reduced cell proliferation without inducing necrosis or apoptosis. Instead, autophagic cell death was the major consequence, and our investigation of mechanisms suggested it is mediated via the dual specificity phosphatase-4 (DUSP4) dependent ERK inactivation pathway. An orthotopic tumor model further confirmed the growth inhibiting effect and induction of autophagy that followed suppression of G9a. CONCLUSIONS In this study, we provide evidence that G9a confers the survival advantage of HNSCC. Genetic or pharmacological inhibition of G9a induces autophagic cell death; this finding provides a basis for new therapeutic targets for treating HNSCC.
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Affiliation(s)
| | | | | | | | | | | | | | - Ching-Ting Tan
- Department of Otolaryngology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan.
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262
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High MMP-21 expression in metastatic lymph nodes predicts unfavorable overall survival for oral squamous cell carcinoma patients with lymphatic metastasis. Oncol Rep 2014; 31:2644-50. [PMID: 24700287 DOI: 10.3892/or.2014.3124] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Accepted: 02/22/2014] [Indexed: 11/05/2022] Open
Abstract
The aim of the present study was to examine the clinical significance of lymph node metastatic (LNM) foci in predicting the overall survival of oral squamous cell carcinoma (OSCC) patients with LNM. MMP-21 was screened based on the LNM animal model of OSCC. Then four proteins, matrix metalloproteinase (MMP)-2, MMP-21, vascular endothelial growth factor (VEGF)-C and VEGF receptor (VEGFR)-3 were examined by immunohistochemistry in 63 OSCC specimens, including the primary tumors (PTs) and the corresponding LNM foci. The expression levels between the PTs and LNM foci were compared by Wilcoxon paired test. Relationships between expression of the four proteins and patient overall survival were assessed by Kaplan-Meier based on the median of the labeling index. The Cox proportional hazards model was used to assess the relative hazard factors. MMP-21 and VEGF-C expression levels were higher in the LNM foci than levels in the PTs. Results showed that MMP-2 and VEGF-C expression levels in the PTs and MMP-2, MMP-21 and VEGF-C expression in the LNM foci correlated with the overall survival of the OSCC patients with lymphatic metastasis. MMP-21 expression level in the LNM foci was the most reliable predictor among all the tested factors. These results suggest that high MMP-21 expression in LNM foci can be used to predict survival in OSCC patients with LNM. Characteristics of LNM foci may be more reliable than PT characteristics in predicting the overall survival of OSCC patients with lymphatic metastasis.
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263
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Genomic DNA copy number alterations from precursor oral lesions to oral squamous cell carcinoma. Oral Oncol 2014; 50:404-12. [PMID: 24613650 DOI: 10.1016/j.oraloncology.2014.02.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Revised: 01/30/2014] [Accepted: 02/05/2014] [Indexed: 12/16/2022]
Abstract
Oral cancer is a multifactorial disease in which both environmental and genetic factors contribute to the aetiopathogenesis. Oral cancer is the sixth most common cancer worldwide with a higher incidence among Melanesian and South Asian countries. More than 90% of oral cancers are oral squamous cell carcinoma (OSCC). The present study aimed to determine common genomic copy number alterations (CNAs) and their frequency by including 12 studies that have been conducted on OSCCs using array comparative genomic hybridization (aCGH). In addition, we reviewed the literature dealing with CNAs that drive oral precursor lesions to the invasive tumors. Results showed a sequential accumulation of genetic changes from oral precursor lesions to invasive tumors. With the disease progression, accumulation of genetic changes increases in terms of frequency, type and size of the abnormalities, even on different regions of the same chromosome. Gains in 3q (36.5%), 5p (23%), 7p (21%), 8q (47%), 11q (45%), 20q (31%) and losses in 3p (37%), 8p (18%), 9p (10%) and 18q (11%) were the most common observations among those studies. However, losses are less frequent than gains but it appears that they might be the primary clonal events in causing oral cancer.
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264
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Cheng MF, Huang MS, Lin CS, Lin LH, Lee HS, Jiang JC, Hsia KT. Expression of matriptase correlates with tumour progression and clinical prognosis in oral squamous cell carcinoma. Histopathology 2014; 65:24-34. [PMID: 24382204 DOI: 10.1111/his.12361] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Accepted: 12/27/2013] [Indexed: 12/19/2022]
Abstract
AIMS To investigate the relationship of matriptase expression in oral squamous cell carcinoma (OSCC) to clinicopathological characteristics, patient survival and cell-invasive properties. METHODS AND RESULTS Matriptase expression in OSCC was evaluated by immunohistochemical staining, and its relationship to clinicopathological features and outcomes was assessed statistically. The shRNA-mediated stable knockdown of matriptase in OSCC cells was used to analyse cell proliferation, migration and invasion in vitro. Matriptase immunostaining score was correlated with histopathological grade, clinical stage, positive lymph node and distant metastasis, and higher matriptase immunostaining score was associated significantly with poor prognosis. Elevated matriptase expression in oral cancer cell lines was a significant promoter of oral cancer cell migration and invasion. CONCLUSIONS Matriptase expression correlates with tumour progression and invasive capability in OSCC and may be an adverse prognostic marker for this cancer.
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Affiliation(s)
- Ming-Fang Cheng
- Institute of Oral Biology, School of Dentistry, National Yang-Ming University, Taipei, Taiwan; Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan; Division of Histological and Clinical Pathology, Hualien Armed Forced General Hospital, Hualien, Taiwan
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265
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Cha JD, Kim HK, Cha IH. Cytoplasmic HuR expression: correlation with cellular inhibitors of apoptosis protein-2 expression and clinicopathologic factors in oral squamous cell carcinoma cells. Head Neck 2014; 36:1168-75. [PMID: 23852810 DOI: 10.1002/hed.23431] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2011] [Revised: 02/05/2013] [Accepted: 07/03/2013] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND HuR expression has been noted in several cancer types, in which it may contribute to increased expression of cellular inhibitors of apoptosis protein-2 (cIAP2) observed during tumorigenesis. METHODS To assess the correlation between cIAP2 and HuR in cases of oral squamous cell carcinoma (OSCC), the expression patterns of HuR and cIAP2 were assessed by immunohistochemical analyses of 95 treated OSCC samples. RESULTS In the tumor tissues, positive cytoplasmic HuR expression was evident in 71.6% of samples and positive cIAP2 expression was noted in 95.8% of samples. Positive cytoplasmic HuR expression was significantly associated with positive cIAP2 (p < .035) and high cIAP2 expression (p < .007), as well as high grade (p < .050). The inhibition of HuR expression by small interfering RNA or leptomycin B caused a reduction in the inducibility of cIAP2 in oral cancer cells. CONCLUSION Cytoplasmic expression of HuR is associated with cIAP2 expression in OSCCs.
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Affiliation(s)
- Jeong-Dan Cha
- Department of Research Development, Institute of Jinan Red Ginseng, Jinan-gun, South Korea
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266
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Chakraborty S, Persaud V, Vanegas S, Gautier G, Esiobu N. Analysis of the Human Oral Microbiome of Smokers and Non-Smokers Using PCR-RFLP and Ribotyping. ACTA ACUST UNITED AC 2014. [DOI: 10.4236/aim.2014.410073] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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267
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Shao Y, Zhang SQ, Quan F, Zhang PF, Wu SL. MicroRNA-145 inhibits the proliferation, migration and invasion of the human TCA8113 oral cancer line. Oncol Lett 2013; 6:1636-1640. [PMID: 24273601 PMCID: PMC3835314 DOI: 10.3892/ol.2013.1621] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Accepted: 09/25/2013] [Indexed: 12/11/2022] Open
Abstract
The aim of this study was to investigate the effect of microRNA (miR)-145 on the proliferation, migration and invasion of the human oral cancer line, TCA8113. Expression levels of miR-145 in TCA8113 cells were detected by quantitative PCR. miR-145 was transfected into human TCA8113 oral cancer cells and the proliferation, migration and invasion abilities of treated TCA8113 cells were detected by proliferation, migration and invasion assays, respectively. The expression levels of miR-145 in TCA8113 cells were significantly lower than those in human normal oral keratinocytes (P<0.05). Cellular proliferation, migration and invasion abilities in the miR-145 transfection group were significantly lower than those in the control group (all P<0.05). High miR-145 expression was found to negatively regulate the proliferation, migration and invasion of TCA8113 cells. Results of the present study indicate that the expression of miR-145 may be associated with the genesis and development of human oral cancer.
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Affiliation(s)
- Yuan Shao
- Department of Otorhinolaryngology, The First Affiliated Hospital of Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi 710061, P.R. China
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268
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Sivadas VP, George NA, Kattoor J, Kannan S. Novel mutations and expression alterations inSMAD3/TGFBR2genes in oral carcinoma correlate with poor prognosis. Genes Chromosomes Cancer 2013; 52:1042-52. [DOI: 10.1002/gcc.22099] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Accepted: 07/10/2013] [Indexed: 01/10/2023] Open
Affiliation(s)
- Vadakke Peringode Sivadas
- Laboratory of Cell Cycle Regulation & Molecular Oncology, Division of Cancer Research, Regional Cancer Centre; Thiruvananthapuram 695 011 Kerala India
| | - Nebu Abraham George
- Division of Surgical Oncology, Regional Cancer Centre; Thiruvananthapuram 695 011 Kerala India
| | - Jayasree Kattoor
- Division of Cytopathology, Regional Cancer Centre; Thiruvananthapuram 695 011 Kerala India
| | - S. Kannan
- Laboratory of Cell Cycle Regulation & Molecular Oncology, Division of Cancer Research, Regional Cancer Centre; Thiruvananthapuram 695 011 Kerala India
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269
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Unusual large tongue ulcer. Oral Surg Oral Med Oral Pathol Oral Radiol 2013; 116:4-8. [PMID: 23768874 DOI: 10.1016/j.oooo.2012.01.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2011] [Revised: 12/18/2011] [Accepted: 01/24/2012] [Indexed: 10/28/2022]
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270
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Wedemeyer I, Kreppel M, Scheer M, Zöller JE, Büttner R, Drebber U. Histopathological assessment of tumour regression, nodal stage and status of resection margins determines prognosis in patients with oral squamous cell carcinoma treated with neoadjuvant radiochemotherapy. Oral Dis 2013; 20:e81-9. [DOI: 10.1111/odi.12137] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2013] [Revised: 04/30/2013] [Accepted: 05/10/2013] [Indexed: 11/28/2022]
Affiliation(s)
- I Wedemeyer
- Department of Pathology; University of Cologne; Cologne Germany
- Center of Integrated Oncology (CIO) Cologne-Bonn; Cologne Germany
| | - M Kreppel
- Department for Oral and Cranio-Maxillo and Facial Plastic Surgery; University of Cologne; Cologne Germany
- Center of Integrated Oncology (CIO) Cologne-Bonn; Cologne Germany
| | - M Scheer
- Department for Oral and Cranio-Maxillo and Facial Plastic Surgery; University of Cologne; Cologne Germany
- Center of Integrated Oncology (CIO) Cologne-Bonn; Cologne Germany
| | - JE Zöller
- Department for Oral and Cranio-Maxillo and Facial Plastic Surgery; University of Cologne; Cologne Germany
- Center of Integrated Oncology (CIO) Cologne-Bonn; Cologne Germany
| | - R Büttner
- Department of Pathology; University of Cologne; Cologne Germany
- Center of Integrated Oncology (CIO) Cologne-Bonn; Cologne Germany
| | - U Drebber
- Department of Pathology; University of Cologne; Cologne Germany
- Center of Integrated Oncology (CIO) Cologne-Bonn; Cologne Germany
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271
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Allon I, Allon DM, Gal G, Anavi Y, Chaushu G, Kaplan I. Re-evaluation of common paradigms regarding the clinical appearance of oral mucosal malignancies. J Oral Pathol Med 2013; 42:670-5. [PMID: 23647097 DOI: 10.1111/jop.12075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/04/2013] [Indexed: 11/28/2022]
Abstract
PURPOSE To evaluate the clinical appearance and rate of ulceration of oral mucosal malignancies, and to investigate the accuracy of clinical provisional diagnoses. METHODS A 10-year retrospective analysis, which included diagnostic biopsies of malignant tumors of the oral mucosa. The clinical provisional diagnoses were compared with final diagnoses. RESULTS Two hundred and twenty-seven oral mucosal malignant tumors were included. Squamous cell carcinoma and its variants accounted for the majority (78%) of all malignant tumors. The most common clinical presentations were non-ulcerated (59.7%) and ulcerated masses (20.4%). Only 11.9% presented as indurate ulcers. The highest ulceration rate of all malignancies was recorded for SCC, with only about half of SCC and its variants ulcerated at the time of biopsy. 31.1% of all malignancies were not clinically suspected to be malignant and did not even include a request to rule out malignancy. There was a better agreement between the clinical provisional diagnoses and microscopic diagnoses in the SCC group than in other types of malignancy (P < 0.001). CONCLUSION Within this study sample, non-ulcerated masses rather than indurate ulcers are the most common clinical appearance of oral mucosal malignancies, and even for SCC, that showed the highest ulceration rate at presentation, half were non-ulcerated. Approximately, one-third of oral mucosal malignancies were not suspected to be malignant prior to biopsy. Thus, the level of suspicion currently reserved for mucosal ulcers and ulcerated masses should also be applied to non-ulcerated oral mucosal masses.
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Affiliation(s)
- Irit Allon
- Department of Oral Pathology and Medicine, Goldschleger School of Dental Medicine, Tel-Aviv University, Tel-Aviv, Israel
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272
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Satgé D, Clémenson P, Nishi M, Clémenson A, Hennequin M, Pacaut C, Mortier J, Culine S. A mucoepidermoid carcinoma in a young man with intellectual disability: review of oral cancer in people with intellectual disability. Oral Surg Oral Med Oral Pathol Oral Radiol 2013; 115:e22-7. [DOI: 10.1016/j.oooo.2012.10.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2012] [Revised: 10/15/2012] [Accepted: 10/20/2012] [Indexed: 01/06/2023]
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273
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MicroRNA-17/20a functions to inhibit cell migration and can be used a prognostic marker in oral squamous cell carcinoma. Oral Oncol 2013; 49:923-931. [PMID: 23602254 DOI: 10.1016/j.oraloncology.2013.03.430] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Revised: 03/04/2013] [Accepted: 03/08/2013] [Indexed: 11/23/2022]
Abstract
OBJECTIVES Oral squamous cell carcinoma (OSCC) accounts for>90% oral cancer which is a leading cause of cancer death worldwide. Early diagnosis may well offer an opportunity to increase survival to this neoplasm. Micro(mi)RNA-interfered cancer progression is crucial, yet its migration machinery of OSCC is still unknown. To access whether the possible miRNA prognostic markers and underlying mechanisms, we developed a highly migratory TW2.6 MS-10 cells from TW2.6 cells to investigate the issue. MATERIALS AND METHODS miRNA profiling was performed on TW2.6 and TW2.6 MS-10. Target miRNA was correlated to pathological status in OSCC patients by real-time RT-PCR. A downstream effector was identified using a bioinformatics analysis, and a 3'-untranslated region (UTR) reporter assay was used. RESULTS An miRNA cluster, miR-17-92, including miR-17, miR-19b, miR-20a, and miR-92a, was found to be significantly down-regulated in TW2.6 MS-10 compared to TW2.6 cells. Overexpression of this cluster decreased the migratory ability of OSCC cell lines. We further demonstrated that miR-17 and miR-20a are the main miRNAs of miR-17-92 cluster which modulate OSCC migration. Clinically, miR-17/20a showed negative correlation with TNM stage and lymphatic metastasis. Through a bioinformatics screening analysis and 3'UTR reporter assay, we confirmed the integrin (ITG) β8 as a direct target of miR-17/20a, and knockdown of ITGβ8 reduced cell migratory capability of OSCC. CONCLUSIONS miR-17/20a acts as a prognostic predictor of OSCC patients' outcome and a tumor migration suppressor miRNA.
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274
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Feller LL, Khammissa RR, Kramer BB, Lemmer JJ. Oral squamous cell carcinoma in relation to field precancerisation: pathobiology. Cancer Cell Int 2013; 13:31. [PMID: 23552362 PMCID: PMC3626548 DOI: 10.1186/1475-2867-13-31] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Accepted: 03/20/2013] [Indexed: 12/13/2022] Open
Abstract
Squamous cell carcinoma of the oral cavity evolves within a field of precancerized oral epithelium containing keratinocytes at different stages of transformation. Following acquisition of additional genetic alterations, these precancerous keratinocytes may become cancerous.Persons with apparently successfully treated oral squamous cell carcinoma are at high risk of developing a new carcinoma at, or close to the site of the treated tumour. This second carcinoma may have developed either from malignant keratinocytes left behind at surgery (recurrence), or from transformed keratinocytes within the field of precancerized epithelium from which the primary carcinoma had arisen (new carcinoma).The cells of the new carcinoma may have genetic changes in common with the cells of the original carcinoma because both are descended from a proliferating monoclone within the precancerized field; but if the new cancer originates from a different clone, it may have a dissimilar genetic profile even if the original and the new carcinoma are closely contiguous.The purpose of this article is to review the pathobiology of oral squamous cell carcinoma in relation to fields of precancerised oral epithelium.
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Affiliation(s)
- Liviu L Feller
- Department of Periodontology and Oral Medicine, University of Limpopo, Medunsa campus, South Africa.
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275
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Gao L, Ren W, Chang S, Guo B, Huang S, Li M, Guo Y, Li Z, Song T, Zhi K, Huang C. Downregulation of miR-145 expression in oral squamous cell carcinomas and its clinical significance. ACTA ACUST UNITED AC 2013; 36:194-9. [PMID: 23548968 DOI: 10.1159/000349956] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND MicroRNAs have been reported to play roles as oncogenes or tumor suppressor genes in human cancers. However, the expression levels of miR-145 in oral squamous cell carcinoma (OSCC) are unclear. The purpose of this study was to investigate the status of miR-145 expression in OSCC and determine its clinical significance. PATIENTS AND METHODS We examined miR-145 levels in 62 OSCC tissue samples and cell lines by quantitative real-time reverse transcription polymerase chain reaction (qRT-PCR). The relationship between miR-145 expression and clinicopathologic factors of OSCC patients was analyzed. RESULTS The proportion of miR-145 low expression was 82.26% (51/62) among the 62 OSCC patients, and expression levels of miR-145 in OSCC tissue samples and cell lines were significantly lower than in non-tumor controls. miR-145 expression levels were not significantly associated with age (p = 0.607), sex (p = 0.213), location (p = 0.952), histology (p = 0.603), pT stage (p = 0.305), pTNM stage (p = 0.471), and lymphatic metastasis (p = 1.000). CONCLUSION miR-145 may be involved in the early tumorigenesis of oral squamous cells, and might be a potential biomarker in the early diagnosis of OSCC.
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Affiliation(s)
- Ling Gao
- Department of Oral Maxillofacial Surgery, Stomatological Hospital, College of Medicine, Xi'an, Shaanxi, P.R. China
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276
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Hernández-Guerrero JC, Jacinto-Alemán LF, Jiménez-Farfán MD, Macario-Hernández A, Hernández-Flores F, Alcántara-Vázquez A. Prevalence trends of oral squamous cell carcinoma. Mexico City's General Hospital experience. Med Oral Patol Oral Cir Bucal 2013; 18:e306-11. [PMID: 23385493 PMCID: PMC3613885 DOI: 10.4317/medoral.18043] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2011] [Accepted: 08/31/2012] [Indexed: 11/23/2022] Open
Abstract
Objective: Recent reports suggest an increase in oral squamous cell carcinoma (OSCC) frequency. To improve programs in public health, it is necessary to understand the epidemiological conditions. The aim of this study was to analyze the trend in gender, age, anatomic zone and OSCC stage from Mexico City’s General Hospital patients from 1990 to 2008.
Study design: A retrospective review of all OSCC cases diagnosed by the Pathology Department of the Mexico City General Hospital was performed. Demographic data, in addition to anatomic zone and histological degree of differentiation were obtained. Central tendency, dispersion and prevalence rate per 100,000 individuals were determined.
Results: A total of 531 patients were diagnosed with OSCC; 58.4% were men, giving a male:female ratio of 1.4:1, and the mean age was 62.5 ± 14.9 years. The predominant anatomic zone was the tongue (44.7%), followed by the lips (21.2%) and gums (20.5%). The most frequent histological degree was moderately differentiated in 325 cases (61.2%). The rates of OSCC prevalence showed similar patterns in terms across time. A significant correlation (P = 0.007) between anatomic zone and age was observed.
Conclusion: According to our results, the prevalence of OSCC does not show important variations; however, a relationship between age and anatomic zone was observed. These data could be used as parameters for the diagnosis of OSCC as well as for the development and dissemination of preventive programs for the early detection of oral cancer.
Key words:Oral squamous cell carcinoma, prevalence, histology degree and anatomic zone.
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Affiliation(s)
- Juan-Carlos Hernández-Guerrero
- Immunology Laboratory, Postgraduate and Research Division, Dental School, National Autonomous University of Mexico, Mexico, DF, Mexico
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277
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CHEN PENG, LIU BING, HU MING. The effect of hydroxycamptothecin and pingyangmycin on human squamous cell carcinoma of the tongue. Oncol Lett 2013; 5:947-952. [PMID: 23426884 PMCID: PMC3576210 DOI: 10.3892/ol.2013.1109] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2012] [Accepted: 12/30/2012] [Indexed: 11/17/2022] Open
Abstract
The purpose of this study was to test hydroxycamptothecin (HCPT) and pingyangmycin (PYM) for their ability to inhibit the squamous cells of tongue carcinoma (Tca8113 cells). The effect of these compounds was tested using the MTT assay in vitro, clonogenic assays, flow cytometry, morphological observation, telomeric repeat amplification protocol (TRAP), transplantation of tumors into athymic mice and TUNEL staining. Treatment with HCPT and PYM, alone or in combination, inhibited the tumor cells and showed a greater inhibition when the drugs were combined. The cloning efficiency of Tca8113 cells was decreased. The microstructure and cell cycle of the cells changed significantly as a result of treatment. Telomerase activity was significantly inhibited in a time-dependent manner. By appearing to promote apoptosis, the drugs demonstrated a significant level of inhibition of the tumor cells in an athymic mouse model, promoting prolonged survival. HCPT and PYM have a marked cytotoxic effect on Tca8113 cells which is improved when used in combination.
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Affiliation(s)
- PENG CHEN
- Department of Oral and Maxillofacial Surgery, General Hospital of PLA, Beijing 100853
| | - BING LIU
- Department of Stomatology, General Air Force Hospital of PLA, Beijing 100036,
P.R. China
| | - MING HU
- Department of Oral and Maxillofacial Surgery, General Hospital of PLA, Beijing 100853
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278
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Yu-Duan T, Chao-Ping W, Chih-Yu C, Li-Wen L, Tsun-Mei L, Chia-Chang H, Fu-Mei C, Hsien-Chang L, Hsia-Fen H, Yau-Jiunn L, Jer-Yiing H. Elevated plasma level of visfatin/pre-b cell colony-enhancing factor in male oral squamous cell carcinoma patients. Med Oral Patol Oral Cir Bucal 2013; 18:e180-6. [PMID: 23229270 PMCID: PMC3613867 DOI: 10.4317/medoral.18574] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Accepted: 08/18/2012] [Indexed: 12/14/2022] Open
Abstract
Objectives: Visfatin, also known as nicotiamide phosphoribosyltransferase or pre-B cell colony enhancing factor, is a pro-inflammatory cytokine whose serum level is increased in various cancers. In this study, we investigated whether plasma visfatin levels were altered in patients with oral squamous cell carcinoma (OSCC). The relationship between plasma visfatin levels and the pretreatment hematologic profile was also explored.
Study Design: Plasma visfatin concentrations were measured through ELISA in OSCC patients and control subjects. A total of 51 patients with OSCC and 57 age- and body mass index (BMI)-matched control subjects were studied. All study subjects were male.
Results: Plasma visfatin was found to be elevated in patients with OSCC (7.0 ± 4.5 vs. 4.8 ± 1.9 ng/ml, p = 0.002). Multiple logistic regression analysis revealed visfatin as an independent association factor for OSCC, even after full adjustment of known biomarkers. Visfatin level was significantly correlated with white blood cell (WBC) count, neutrophil count, and hematocrit (all p < 0.05). In addition, WBC count, neutrophil count, and visfatin gradually increased with stage progression, and hematocrit gradually decreased with stage progression (all p < 0.05).
Conclusion: Increased plasma visfatin levels were associated with OSCC, independent of risk factors, and were correlated with inflammatory biomarkers. These data suggest that visfatin may act through inflammatory reactions to play an important role in the pathogenesis of OSCC.
Key words:Visfatin; oral squamous cell carcinomas; white blood cell count; neutrophil count.
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Affiliation(s)
- Tsai Yu-Duan
- Division of Neurology, Department of Surgery, I-Shou University, Kaohsiung 82445, Taiwan
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279
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González-Ramírez I, Irigoyen-Camacho ME, Ramírez-Amador V, Lizano-Soberón M, Carrillo-García A, García-Carrancá A, Sánchez-Pérez Y, Méndez-Martínez R, Granados-García M, Ruíz-Godoy LM, García-Cuellar CM. Association between age and high-risk human papilloma virus in Mexican oral cancer patients. Oral Dis 2013; 19:796-804. [DOI: 10.1111/odi.12071] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Accepted: 01/01/2013] [Indexed: 12/21/2022]
Affiliation(s)
- I González-Ramírez
- Subdirección de Investigación Básica; Instituto Nacional de Cancerología; Mexico City; Mexico
| | - ME Irigoyen-Camacho
- Departamento de Atención a la Salud; Universidad Autónoma Metropolitana Xochimilco; Mexico City; Mexico
| | - V Ramírez-Amador
- Departamento de Atención a la Salud; Universidad Autónoma Metropolitana Xochimilco; Mexico City; Mexico
| | - M Lizano-Soberón
- Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología/Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México; Mexico City; Mexico
| | - A Carrillo-García
- Subdirección de Investigación Básica; Instituto Nacional de Cancerología; Mexico City; Mexico
| | - A García-Carrancá
- Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología/Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México; Mexico City; Mexico
| | - Y Sánchez-Pérez
- Subdirección de Investigación Básica; Instituto Nacional de Cancerología; Mexico City; Mexico
| | - R Méndez-Martínez
- Subdirección de Investigación Básica; Instituto Nacional de Cancerología; Mexico City; Mexico
| | - M Granados-García
- Departamento de Tumores de Cabeza y Cuello; Instituto Nacional de Cancerología; Mexico City; Mexico
| | - LM Ruíz-Godoy
- Instituto Nacional de Cancerología, Banco de Tumores; Mexico City; Mexico
| | - CM García-Cuellar
- Subdirección de Investigación Básica; Instituto Nacional de Cancerología; Mexico City; Mexico
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280
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Suter VGA, Zbären P, Borradori L, Schmitt AM, Reichart PA, Bornstein MM. Scarring and chronic ulceration of the floor of the mouth. Oral Surg Oral Med Oral Pathol Oral Radiol 2012; 117:267-71. [PMID: 22981098 DOI: 10.1016/j.oooo.2012.06.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Revised: 06/07/2012] [Accepted: 06/11/2012] [Indexed: 11/20/2022]
Affiliation(s)
- Valerie G A Suter
- Department of Oral Surgery and Stomatology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Peter Zbären
- Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, Bern University Hospital and University of Bern, Bern, Switzerland
| | - Luca Borradori
- Department of Dermatology, Inselspital, Bern University Hospital and University of Bern, Bern, Switzerland
| | - Anja M Schmitt
- Department of Pathology, University of Bern, Bern, Switzerland
| | - Peter A Reichart
- Department of Oral Surgery and Stomatology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Michael M Bornstein
- Department of Oral Surgery and Stomatology, School of Dental Medicine, University of Bern, Bern, Switzerland.
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281
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Satgé D, Nishi M, Culine S, Hennequin M. Awareness on oral cancer in people with intellectual disability. Oral Oncol 2012; 48:e44-5. [PMID: 22868078 DOI: 10.1016/j.oraloncology.2012.07.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2012] [Revised: 07/05/2012] [Accepted: 07/07/2012] [Indexed: 11/27/2022]
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282
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Pushalkar S, Ji X, Li Y, Estilo C, Yegnanarayana R, Singh B, Li X, Saxena D. Comparison of oral microbiota in tumor and non-tumor tissues of patients with oral squamous cell carcinoma. BMC Microbiol 2012; 12:144. [PMID: 22817758 PMCID: PMC3507910 DOI: 10.1186/1471-2180-12-144] [Citation(s) in RCA: 219] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2012] [Accepted: 07/20/2012] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Bacterial infections have been linked to malignancies due to their ability to induce chronic inflammation. We investigated the association of oral bacteria in oral squamous cell carcinoma (OSCC/tumor) tissues and compared with adjacent non-tumor mucosa sampled 5 cm distant from the same patient (n = 10). By using culture-independent 16S rRNA approaches, denaturing gradient gel electrophoresis (DGGE) and cloning and sequencing, we assessed the total bacterial diversity in these clinical samples. RESULTS DGGE fingerprints showed variations in the band intensity profiles within non-tumor and tumor tissues of the same patient and among the two groups. The clonal analysis indicated that from a total of 1200 sequences characterized, 80 bacterial species/phylotypes were detected representing six phyla, Firmicutes, Bacteroidetes, Proteobacteria, Fusobacteria, Actinobacteria and uncultivated TM7 in non-tumor and tumor libraries. In combined library, 12 classes, 16 order, 26 families and 40 genera were observed. Bacterial species, Streptococcus sp. oral taxon 058, Peptostreptococcus stomatis, Streptococcus salivarius, Streptococcus gordonii, Gemella haemolysans, Gemella morbillorum, Johnsonella ignava and Streptococcus parasanguinis I were highly associated with tumor site where as Granulicatella adiacens was prevalent at non-tumor site. Streptococcus intermedius was present in 70% of both non-tumor and tumor sites. CONCLUSIONS The underlying changes in the bacterial diversity in the oral mucosal tissues from non-tumor and tumor sites of OSCC subjects indicated a shift in bacterial colonization. These most prevalent or unique bacterial species/phylotypes present in tumor tissues may be associated with OSCC and needs to be further investigated with a larger sample size.
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Affiliation(s)
- Smruti Pushalkar
- Department of Basic Sciences and Craniofacial Biology, New York University College of Dentistry, 345 E, 24th Street, Room 921B, New York, NY, 10010, USA
| | - Xiaojie Ji
- Department of Basic Sciences and Craniofacial Biology, New York University College of Dentistry, 345 E, 24th Street, Room 921B, New York, NY, 10010, USA
- Department of Chemical and Biological Sciences, Polytechnic Institute of NYU, New York, NY, USA
| | - Yihong Li
- Department of Basic Sciences and Craniofacial Biology, New York University College of Dentistry, 345 E, 24th Street, Room 921B, New York, NY, 10010, USA
| | - Cherry Estilo
- Dental Service, Department of Surgery, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - Ramanathan Yegnanarayana
- Laboratory of Epithelial Cancer Biology, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - Bhuvanesh Singh
- Laboratory of Epithelial Cancer Biology, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - Xin Li
- Department of Basic Sciences and Craniofacial Biology, New York University College of Dentistry, 345 E, 24th Street, Room 921B, New York, NY, 10010, USA
| | - Deepak Saxena
- Department of Basic Sciences and Craniofacial Biology, New York University College of Dentistry, 345 E, 24th Street, Room 921B, New York, NY, 10010, USA
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283
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Liu YT, Lin LW, Chen CY, Wang CP, Liu HP, Houng JY, Chung FM, Shieh TY. Polymorphism of angiotensin I-converting enzyme gene is related to oral cancer and lymph node metastasis in male betel quid chewers. Oral Oncol 2012; 48:1257-62. [PMID: 22776130 DOI: 10.1016/j.oraloncology.2012.06.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2011] [Revised: 05/28/2012] [Accepted: 06/07/2012] [Indexed: 01/08/2023]
Abstract
OBJECTIVES Angiotensin I-converting enzyme (ACE), a type I cell surface zinc metallopeptidase, is differentially expressed in several malignancies and plays a role in tumor cell proliferation, tumor cell migration, angiogenesis, and metastatic behavior. We aimed to investigate the effects of ACE gene (rs1799752) variants on oral cancer risk. MATERIALS AND METHODS Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) 32 was used to measure ACE gene polymorphisms in 88 patients with oral precancerous lesion (OPL), 186 33 patients with oral cancer, and 120 control subjects without any oral lesions. All study subjects were male 34 betel quid chewers. RESULTS Patients with oral cancer or OPL had a higher frequency of the DD genotype than the control patients did. Oral cancer patients with the DD genotype had a significantly higher prevalence of lymph node metastases than patients with the II/ID genotype did. After adjusting for age, smoking, drinking, and betel quid chewing status, we found that individuals with the DD genotype of the ACE gene had a 5.46-fold and 3.13-fold higher risk of developing oral cancer or OPL, respectively, than those with the II genotype did. Furthermore, oral cancer patients with the DD genotype of the ACE gene had a 2.16-fold higher likelihood of lymph node metastasis. CONCLUSION Our data suggest that the ACE gene polymorphisms may be associated with increased susceptibility to OPL and oral cancer and lymph node metastasis from oral cancer.
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Affiliation(s)
- Yi-Tien Liu
- Division of Plastic, Department of Surgery, E-Da Hospital, I-Shou University, Kaohsiung 82445, Taiwan
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284
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Overexpression of eIF3a in Squamous Cell Carcinoma of the Oral Cavity and Its Putative Relation to Chemotherapy Response. JOURNAL OF ONCOLOGY 2012; 2012:901956. [PMID: 22619676 PMCID: PMC3347757 DOI: 10.1155/2012/901956] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2011] [Accepted: 02/10/2012] [Indexed: 01/23/2023]
Abstract
The eukaryotic translation initiation factor eIF3a is one of the core subunits of the translation initiation complex eIF3, responsible for ribosomal subunit joining and mRNA recruitment to the ribosome. It is known to play an important role in general translation initiation as well as in the specific translational regulation of various gene products, among which many influence tumour development, progression, and the therapeutically important pathways of DNA damage repair. Therefore, beyond its role in protein synthesis, eIF3a is emerging as regulator in tumour pathogenesis and therapy response and, therefore, a potential tumor marker. By means of a tissue microarray (TMA) for histopathological and statistical assessment, we here show eIF3a expression in 103 cases of squamous cell carcinoma of the oral cavity (OSCC), representing tissues from 103 independent patients. A subset of the study cohort was treated with platinum based therapy. Our results show that the 170 kDa protein is upregulated in OSCC and correlates with good overall survival. Overexpressing tumors respond better to platinum-based chemotherapy, suggesting eIF3a as a putative predictive as well as prognostic tumor marker in OSCC.
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285
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Li J, Gong C, Feng X, Zhou X, Xu X, Xie L, Wang R, Zhang D, Wang H, Deng P, Zhou M, Ji N, Zhou Y, Wang Y, Wang Z, Liao G, Geng N, Chu L, Qian Z, Wang Z, Chen Q. Biodegradable thermosensitive hydrogel for SAHA and DDP delivery: therapeutic effects on oral squamous cell carcinoma xenografts. PLoS One 2012; 7:e33860. [PMID: 22529899 PMCID: PMC3329521 DOI: 10.1371/journal.pone.0033860] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2011] [Accepted: 02/22/2012] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND OSCC is one of the most common malignancies and numerous clinical agents currently applied in combinative chemotherapy. Here we reported a novel therapeutic strategy, SAHA and DDP-loaded PECE (SAHA-DDP/PECE), can improve the therapeutic effects of intratumorally chemotherapy on OSCC cell xenografts. OBJECTIVE/PURPOSE The objective of this study was to evaluate the therapeutic efficacy of the SAHA-DDP/PECE in situ controlled drug delivery system on OSCC cell xenografts. METHODS A biodegradable and thermosensitive hydrogel was successfully developed to load SAHA and DDP. Tumor-beared mice were intratumorally administered with SAHA-DDP/PECE at 50 mg/kg (SAHA) +2 mg/kg (DDP) in 100 ul PECE hydrogel every two weeks, SAHA-DDP at 50 mg/kg(SAHA) +2 mg/kg(DDP) in NS, 2 mg/kg DDP solution, 50 mg/kg SAHA solution, equal volume of PECE hydrogel, or equal volume of NS on the same schedule, respectively. The antineoplastic actions of SAHA and DDP alone and in combination were evaluated using the determination of tumor volume, immunohistochemistry, western blot, and TUNEL analysis. RESULTS The hydrogel system was a free-flowing sol at 10 °C, become gel at body temperature, and could sustain more than 14 days in situ. SAHA-DDP/PECE was subsequently injected into tumor OSCC tumor-beared mice. The results demonstrated that such a strategy as this allows the carrier system to show a sustained release of SAHA and DDP in vivo, and could improved therapeutic effects compared with a simple additive therapeutic effect of SAHA and DDP on mouse model. CONCLUSIONS Our research indicated that the novel SAHA-DDP/PECE system based on biodegradable PECE copolymer enhanced the therapeutic effects and could diminished the side effects of SAHA/DDP. The present work might be of great importance to the further exploration of the potential application of SAHA/DDP-hydrogel controlled drug release system in the treatment of OSCC.
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Affiliation(s)
- Jing Li
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Changyang Gong
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Xiaodong Feng
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Xikun Zhou
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Xiaoping Xu
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Liang Xie
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Ruinan Wang
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Dunfang Zhang
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Hui Wang
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Peng Deng
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Min Zhou
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Ning Ji
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Yu Zhou
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Yun Wang
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Zhiyong Wang
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Ga Liao
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Ning Geng
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Liangyin Chu
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Zhiyong Qian
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
| | - Zhi Wang
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Qianming Chen
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
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286
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Haumschild MS, Haumschild RJ, Holloway PL. The Importance of Oral Cancer Screenings by Nurse Practitioners. J Nurse Pract 2012. [DOI: 10.1016/j.nurpra.2011.09.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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287
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Feller L, Lemmer J. Oral Squamous Cell Carcinoma: Epidemiology, Clinical Presentation and Treatment. ACTA ACUST UNITED AC 2012. [DOI: 10.4236/jct.2012.34037] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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288
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Sun J, Gao Q, Fan VTW. Multifocal cutaneous metastases from squamous cell carcinoma of hard palate. Int J Oral Maxillofac Surg 2011; 41:807-9. [PMID: 22209186 DOI: 10.1016/j.ijom.2011.12.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2011] [Revised: 08/14/2011] [Accepted: 12/01/2011] [Indexed: 02/05/2023]
Abstract
Distant metastases from oral squamous cell carcinoma are unusual, but generally occur in lungs, bone, and liver. Cutaneous metastasis is extremely rare, and it often reflects an advanced stage with sinister prognosis. The authors report an 81-year-old male patient with multifocal cutaneous metastases from a recurrent squamous cell carcinoma of the hard palate 5 months after primary treatment.
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Affiliation(s)
- J Sun
- Department of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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289
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Mulhall HJ, Labeed FH, Kazmi B, Costea DE, Hughes MP, Lewis MP. Cancer, pre-cancer and normal oral cells distinguished by dielectrophoresis. Anal Bioanal Chem 2011; 401:2455-63. [DOI: 10.1007/s00216-011-5337-0] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2011] [Revised: 08/12/2011] [Accepted: 08/14/2011] [Indexed: 11/28/2022]
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290
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Kreppel M, Drebber U, Wedemeyer I, Eich HT, Backhaus T, Zöller JE, Scheer M. Podoplanin expression predicts prognosis in patients with oral squamous cell carcinoma treated with neoadjuvant radiochemotherapy. Oral Oncol 2011; 47:873-8. [PMID: 21767977 DOI: 10.1016/j.oraloncology.2011.06.508] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2010] [Revised: 06/21/2011] [Accepted: 06/26/2011] [Indexed: 10/17/2022]
Abstract
Despite new therapeutic approaches patients with advanced oral squamous cell carcinoma still have a dismal prognosis. The main factor contributing to this problem is locoregional failure due to a lack of response to treatment. Several trials have proven the effect of neoadjuvant radiochemotherapy followed by radical surgery in comparison to primary surgery followed by adjuvant radiochemotherapy. No reliable parameters have been identified so far to predict response to radiochemotherapy. The aim of our study was to assess whether podoplanin expression in pretreatment biopsies could serve as a biomarker to predict the host response to neoadjuvant radiochemotherapy. In this retrospective study, podoplanin expression was examined in a set of 63 patients with oral squamous cell carcinoma by immunohistochemistry. We analyzed associations between the level of podoplanin expression and various clinicopathologic parameters, including response to radiochemotherapy, clinical and histological N-status. Furthermore we evaluated the effects of these parameters on overall survival and on locoregional control in univariate and multivariate analysis. The χ(2)-test revealed that high expression of podoplanin in pretreatment biopsy material was associated with non-regression of the tumor (p=0.013) and poor overall survival (p<0.001). Five-year survival rates of 92.9% for patients with weak expression and 15.0% for high expression were revealed. Podoplanin expression was also significantly associated with ypN status (p=0.004) and ypUICC status (p<0.001). We concluded that podoplanin might serve as a factor to predict treatment response in oral squamous cell carcinoma treated with neoadjuvant platin-based radiochemotherapy as well as a prognostic factor for overall survival and locoregional control.
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Affiliation(s)
- Matthias Kreppel
- Department for Oral and Cranio-Maxillo and Facial Plastic Surgery, University of Cologne, Kerpenerstrasse 62, 50937 Cologne, Germany.
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291
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Lam DK, Schmidt BL. Orofacial pain onset predicts transition to head and neck cancer. Pain 2011; 152:1206-1209. [PMID: 21388740 PMCID: PMC3099418 DOI: 10.1016/j.pain.2011.02.009] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2010] [Revised: 01/11/2011] [Accepted: 02/02/2011] [Indexed: 12/17/2022]
Abstract
Contrary to a clinical aphorism that early head and neck cancer is painless, we show that patients who develop head and neck cancer experience significant pain at the time of initial diagnosis. We compared orofacial pain sensitivity in groups of patients with normal oral mucosa, oral precancer, and newly diagnosed oral cancer. The University of California San Francisco Oral Cancer Pain Questionnaire was administered to these patients at their initial visit, before being prescribed analgesics for pain and before any treatment. In contrast to those with biopsy-proven normal oral mucosa and oral precancer, only oral cancer patients reported significant levels of spontaneous pain and functional restriction from pain. Moreover, oral cancer patients experienced significantly higher function-related, rather than spontaneous, pain qualities. These findings suggest an important predictor for the transition from oral precancer to cancer may be the onset of orofacial pain that is exacerbated during function. Screening patients who have new-onset orofacial pain may lead to a diagnosis of early resectable head and neck cancer and may improve quality of life and survival for head and neck cancer patients.
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Affiliation(s)
- David K Lam
- Department of Oral and Maxillofacial Surgery, University of California San Francisco, San Francisco, CA, USA Bluestone Center for Clinical Research, New York University, New York, NY, USA Department of Oral and Maxillofacial Surgery, New York University, New York, NY, USA
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292
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Pushalkar S, Mane SP, Ji X, Li Y, Evans C, Crasta OR, Morse D, Meagher R, Singh A, Saxena D. Microbial diversity in saliva of oral squamous cell carcinoma. ACTA ACUST UNITED AC 2011; 61:269-77. [PMID: 21205002 DOI: 10.1111/j.1574-695x.2010.00773.x] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In the oral cavity, chronic inflammation has been observed at various stages of oral squamous cell carcinomas (OSCC). Such inflammation could result from persistent mucosal or epithelial cell colonization by microorganisms. There is increasing evidence of the involvement of oral bacteria in inflammation, warranting further studies on the association of bacteria with the progression of OSCC. The objective of this study was to evaluate the diversity and relative abundance of bacteria in the saliva of subjects with OSCC. Using 454 parallel DNA sequencing, ∼58,000 PCR amplicons that span the V4-V5 hypervariable region of rRNAs from five subjects were sequenced. Members of eight phyla (divisions) of bacteria were detected. The majority of classified sequences belonged to the phyla Firmicutes (45%) and Bacteroidetes (25%). Further, 52 different genera containing approximately 860 (16.51%) known species were identified and 1077 (67%) sequences belonging to various uncultured bacteria or unclassified groups. The species diversity estimates obtained with abundance-based coverage estimators and Chao1 were greater than published analyses of other microbial profiles from the oral cavity. Fifteen unique phylotypes were present in all three OSCC subjects.
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Affiliation(s)
- Smruti Pushalkar
- Department of Basic Science and Craniofacial Biology, New York University College of Dentistry, New York, NY, USA
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293
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Chen SC, Liao CT, Chang JTC. Orofacial pain and predictors in oral squamous cell carcinoma patients receiving treatment. Oral Oncol 2010; 47:131-5. [PMID: 21147547 DOI: 10.1016/j.oraloncology.2010.11.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2010] [Revised: 11/05/2010] [Accepted: 11/08/2010] [Indexed: 12/24/2022]
Abstract
Surgical and radiation therapy for oral squamous cell carcinoma (OSCC) may generate orofacial pain. The aims of this study were to (1) characterize the pain experienced by people with orofacial pain, and (2) determine the factors associated with changes in orofacial pain in OSCC patients during the postoperative and post-radiation therapy periods. The study had a prospective longitudinal design with consecutive sampling. Seventy-two eligible patients were recruited from the outpatient department of otolaryngology, head and neck cancer, and radiation therapy of a medical center in northern Taiwan. A set of questionnaires was used for patient assessment, including the University of California San Francisco Oral Cancer Pain Questionnaire, Symptom Severity Scale, Hospital Anxiety and Depression Scale, and Karnofsky's Performance Status Index. Patients were assessed at two time points: 1 month after surgery (T1) and 1 month after completion of radiation treatment (T2). The findings showed that (1) patients reported moderate orofacial pain at both time points; (2) orofacial pain, oral function-related symptoms, and psychological distress were significantly higher at T1 than at T2; and (3) older age, eating difficulty, speech difficulty, and depression were significant predictors of orofacial pain. Oral rehabilitation and relaxation training may reduce orofacial pain in this patient population.
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Affiliation(s)
- Shu-Ching Chen
- Department of Nursing, Chang Gung Institute of Technology, Taoyuan, Taiwan.
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294
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Interstitial HDR brachytherapy (HDR-BT) in early stage mobile tongue cancers in young patients - Gliwice experience. J Contemp Brachytherapy 2010; 2:61-63. [PMID: 27829846 PMCID: PMC5095262 DOI: 10.5114/jcb.2010.14403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2010] [Accepted: 06/06/2010] [Indexed: 11/24/2022] Open
Abstract
Purpose In early stage mobile tongue cancer radical radiotherapy offers good local control and organ preservation, which is especially important in the group of young patients. In our department, for many years HDR-BT has been performed in mobile tongue cancers as a sole treatment or as a “boost” with EBRT. The aim of the study was to show our experience with HDR-BT in early stage mobile tongue cancers among young patients. Material and methods From 2001 to 2006 in Maria Skłodowska-Curie Memorial Cancer Centre and Institute of Oncology, Gliwice Branch, five patients under 45 years with mobile tongue cancer were treated with HDR brachytherapy (T1N0M0 – 3/5 and T2N0M0 – 2/5); 4 with HDR brachytherapy “boost” and 1 as a sole treatment. One woman was previously treated with tumour resection, but because of positive surgical margins was referred for radiotherapy. All patients had clinically negative lymph nodes, without dissection. They were treated with interstitial HDR-BT (3-8 catheters). In 4 patients treated with HDR-BT as a “boost”, total doses ranged from 18 to 21 Gy given in 6-7 fractions (twice a day, 3 Gy per fraction). Total doses in EBRT (to local lymph nodes and tumour bed) ranged from 50 to 60 Gy (1.8-2 Gy per fraction 5 days/week). One patient, treated with radical HDR brachytherapy, received 45 Gy in 10 fractions and 50 Gy in EBRT to regional lymph nodes. Results We did not notice local recurrences or distant metastases in our group of patients. Median follow-up was 67 months (range 47-79 months). All patients preserved normal tongue function. A severe late complication occurred in 1 patient – fracture of the mandible. Conclusions In the analysed group of young patients with mobile tongue cancer interstitial HDR brachytherapy in combination with EBRT was an effective and well tolerated treatment modality which allowed preservation of the tongue and its function.
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