Second Primary Tumor: P53 and Ki-67 Expression in Patients with Oral Squamous Cell Carcinoma (original) (raw)
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Asian Journal of Medical Sciences
Background: Prognosis of oral squamous cell carcinoma (OSCC) can be predicted by evaluating both clinicopathological parameters and molecular markers. Understanding the reasons of recurrence is important to increase the morbidity and mortality of the patient. Objectives: The objectives are to study the immunoexpression of p53 and Ki-67 in recurrent and non recurrent OSCC. And correlate the clinicopathological parameters among non-recurrent and recurrent OSCC to predict the prognosis of OSCC. Methods: Clinicopathological and immunoexpression of p53 and Ki-67 at the histologically negative margin (HNM) and invasive tumor front (ITF) were assessed in 50 cases of non-recurrent and recurrent OSCC. Overall survival and disease free survival was estimated. Statistical tests like Mann Whitney U test, t Test, Pearson correlation coefficient, Kaplan Meier curve and Log Rank test were used. Results: The Labelling Index (LI) of p53 and Ki-67 was marginally higher in recurrent than in non-recurr...
Journal of Pathology of Nepal, 2018
Background: As most of the oral squamous cell carcinoma develop from precursor premalignant lesions, it would be helpful if the malignant transformation is detected early in premalignant state. The objective of the research was to study the role of immunohistochemical expression of p53 and Ki-67 in oral premalignant lesion and squamous cell carcinoma.Materials and Methods: The expression of immunomarkers p53 and Ki67 were studied on formalin fixed paraffin embedded tissue sections from human oral squamous mucosal lesion for duration of 1 year. Results: Of total 36 cases, 80% cases of keratosis without dysplasia showed basal pattern of p53 staining while 47.1% cases of squamous cell carcinoma showed p53 staining in all layers of epithelium. The median p53 Labelling Index of squamous cell carcinoma was more than those of keratosis with and without dysplasia though the result was statistically non-significant. 50.0% cases of keratosis without dysplasia and 83.3% cases of keratosis with...
P53, p16 and Ki67 immunoexpression in oral squamous carcinomas
Romanian journal of morphology and embryology = Revue roumaine de morphologie et embryologie, 2012
In this study, we have analyzed clinically, histopathologically and immunohistochemically a total of 34 cases of oral squamous carcinoma in 11 of the cases being identified adjacent epithelial dysplastic lesions. Carcinomas were diagnosed in patients aged 40-60 years, males, with chronic exposure to tobacco and/or alcohol, being located especially on the lips. Well-differentiated carcinomas have been predominant (52.9%) in stage I/II tumoral (88.3%). Immunoexpression analysis of p53, p16 and Ki67 did not reveal statistically significant differences between the expression of markers and clinical or histopathological parameters, except Ki67 whose increased expression was associated to the decrease of the degree of tumoral differentiation and with high degree dysplasia. The positivity index and the intensity of reaction were increased at the level of dysplasic epithelium for p16 and at the level of tumoral invasion front for the p53 and Ki67. The study highlights the value of the immun...
European Journal of Translational Myology
Mutations in tumor suppressor p53 protein can occur at different phases of malignant transformation and affect the patient's prognosis. This study aimed to evaluate the expression of mutant p53 protein in Iranian patients with the primary and recurrence oral squamous cell carcinoma (OSCC). This retrospective cross-sectional study conducted on a group of patients with the primary OSCC (n=122) and the control subjects with oral noncancerous reactive lesions (n=80). Immunohistochemistry was performed with the DO-7 monoclonal antibody against p53 protein, and samples with ≥10% immunostaining were considered positive. Statistical analyses were carried out using SPSS. Positive staining for p53 was observed in none of the control subjects and 57.4% (70 of 122) of the primary OSCC patients (p<0.0001, OR=107.69, 95%CI=6.49-179.0). The p53 immunopositivity had no significant differences between males and females (54.2% vs. 62%, p=0.390), but significantly different between those aged b...
Journal of Oral Pathology and Medicine, 2005
BACKGROUND: Although many histopathologic characteristics of oral squamous cell carcinoma (O-SCC) have been identified as prognostic factors, accurate, and unequivocal factors have not been clearly identified. The purpose of this study was to evaluate a potential association between the histologic grade of malignancy at the deep invasive front and the expression of Ki-67 antigen and p53 protein in O-SCC. METHODS: The expression of Ki-67 antigen and p53 at the invasive tumor front area of O-SCC was examined by immunohistochemistry of archived tissue from 62 cases. The mean age of patients was 60.7 years (range: 37-89) and the male-female ratio was 1.6:1 (38 men, 24 women). There were 20, 17, 14, and 11 cases classified as stage I to stage IV, respectively. The correlation between the intensity of immunostaining for Ki-67 antigen and p53 and the histologic grade of malignancy at the deep invasive front (invasive front grade, IFG) was analyzed. The expression of Ki-67 antigen and p53 in normal oral epithelia (10 cases) was also investigated. RESULTS: The mean Ki-67 labeling index (LI) in the O-SCC samples was 32.8 ± 12.0% (n ¼ 62). The mean total score of IFG (IFG score) was 9.1 ± 2.7 points (n ¼ 62). There was a significant linear correlation between the IFG score and the Ki-67 antigen (c ¼ 0.651, R 2 ¼ 0.596, P < 0.0001). Of 50 tumors examined, 27 (54.0%) exhibited p53-positive nuclear immunostaining. The staining patterns for Ki-67 antigen and p53 were similar. Both Ki-67-LI and p53-positive status were significantly correlated with the IFG scores. CONCLUSION: The findings of this study demonstrate that overexpression of Ki-67 antigen and p53 at the deep tumor invasive front of O-SCC is associated with histologic grade of malignancy. J Oral Pathol Med (2005) 34: 602-7
Head & Neck, 2004
Background. Aberrations of the p53 gene and overexpression of its protein are widely recognized markers of malignancy including oral squamous cell carcinomas. This study was performed to evaluate the relationship of immunoexpression of p53 protein in series of 91 squamous cell carcinomas of the oral cavity with clinicopathologic parameters and to investigate whether p53 immunoexpression might influence the clinical outcome of the disease.
IP Innovative Publication Pvt. Ltd., 2017
Introduction: Oral squamous cell carcinoma (OSCC) is the sixth most common cancer in the world. It usually develops in males in the 6th and 7th decade and is caused by tobacco and alcohol consumption. Materials and Method: This study was performed on 40 histopathologically proven cases of squamous cell carcinoma of oral region in Department of Pathology SGRDIMSR, Amritsar, Punjab. Tissue were stained for H & E and further immunostained for p53 receptor. p53 expression was correlated with histological grading, age, sex, vascular, perineural, muscle invasion and lymph node metastasis. Results: In our study, maximum incidence was seen in age group of 41-60 years with a male:female ratio of 7:1. A statistically significant correlation between p53 positivity with grade of carcinoma and cases presenting with nodal metastasis was seen. However, no such correlation was seen with age, sex, vascular, neural and muscle invasion. Conclusion: p53 positivity shows a direct correlation with grade and lymph node metastasis of SCC in head and neck. Thus, p53 has an influence on prognosis.
IOSR Journals , 2019
Background: Head and neck cancers are one of the leading cancers by incidence and mortality worldwide, mostly involving the mouth and oropharynx. Despite intense research, its 5-year survival rate remains low. p53 expression has been studied extensively in head and neck squamous cell carcinoms but its utility as a prognostic biomarker is still unclear. Aim: Assessment and clinicopathological correlation of p53 expression in head and neck squamous cell carcinoma. Methods: This prospective study was conducted at Kalinga Institute of Medical Sciences and Pradyumna Bal Memorial Hospital, Bhubaneswar, Odisha in the Department of Pathology for a period of two years and 56 cases were included. p53 expression and its correlation with the various clinicopathological parameters was studied by IHC. The obtained results were analyzed using chi-square test and a p-value of <0.05 was considered significant. Results: In this study out of 56 cases of head and neck squamous cell arcinomas, p53 expression was found in 37 (66.07%) cases. A significant correlation was found between p53 expression and site of origin of the tumour (p=0.014) as well as nodal metastasis (p=0.039). p53 expression did not show any significant correlation with age,sex, the risk factors (alcohol consumption, paan chewing and smoking), grade or tumor staging. Conclusion: p53 expression was observed in majority of cases originating from buccal mucosa and it may serve as a predictor of lymph node metastasis and eventual aggressiveness in head and neck squamous cell carcinomas.
2010
OBJECTIVE: This study is aimed to evaluate the immunostaining influence of p53 and Ki67 proteins in areas of field cancerization of head and neck squamous cell carcinoma (HNSCC). We analyzed associations of these proteins with clinicopathological parameters and the relation between their immunoexpression in HNSCC. MATERIAL AND METHOD: In a retrospecive analysis, 40 patients with HNSCC were selected according to the recurrence of the disease, forming two groups: recurrent and non-recurrent HNSCC. Morphological gradations and imunnohistochemical analysis of p53 and Ki67 were performed in invasive front and tumor adjacent epithelium. RESULTS: It was found significant associations between tumor recurrence and p53 positivity in mucosa and invasive front. However, no association was found between p53 immunostaining and the clinicopathological parameters. Ki67 was not related to any clinicopathological parameter either. The association between Ki67 and p53 expression was not significant. T...
The Open Dentistry Journal, 2007
Oral leukoplakia (OL) is the most common potentially malignant lesion of the oral cavity. Immunohistochemical analysis of p53 and Ki67 proteins is a simple and inexpensive method widely used in non-dysplastic OLs to reveal lesions predicted to develop oral cancer. The present longitudinal study evaluated the predictive role of p53 and Ki67 proteins alone or in combination in a group of OLs without dysplasia followed for many years. Seventy-seven OL patients referred to our Department between January 2006 and October 2013 underwent histochemical analysis of p53 and Ki67 expression. OLs were considered at high risk in the presence of either high p53 expression (>20%), or low/normal p53 expression associated with high Ki67 expression (Ki67/p53 ratio >3). Seven OLs evolved to OSCC during the follow-up period. Three cases had p53 overexpression, while four had a high Ki67/p53 ratio. Statistical significance was reached when samples with p53 overexpression were combined with samples with high Ki67/p53 ratio (Chi square 5.3; p<0.02). The combined immunohistochemical expression of p53 and Ki67 proteins could be a useful and simple molecular marker for early detection of non-dysplastic OLs at risk of developing oral cancer.