Cytoplasmic expression of HuR may be a valuable diagnostic tool for determining the potential for malignant transformation of oral verrucous borderline lesions
نویسندگان
چکیده
Oral verrucous carcinoma (OVC) is a low grade variant of oral squamous cell carcinoma, and oral verrucous hyperplasia (OVH) is a benign lesion without malignant features. However, pathologists are sometimes presented with borderline lesions and are indecisive as to diagnose them as benign or malignant. Thus, these lesions are tentatively termed oral verrucous lesions (OVLs). HuR is an ARE mRNA-binding protein, normally localized in the nucleus but cytoplasmic exportation is frequently observed in cancer cells. The present study aimed to elucidate whether expression of the HuR protein facilitates the diagnosis of true malignant lesions. Clinicopathological features were evaluated, and immunohistochemical analysis for p53, Ki67 and HuR proteins was performed in 48 cases of OVH, OVC and OVL, and the outcomes were correlated using appropriate statistical analysis. The association of these three proteins in relation to malignant transformation was analyzed after a 3-year follow-up of 25 OVL cases. The basal characteristics (age, gender and location) of all cases had no significant association with the types of lesions. Gingiva (39.4%) was the common site for all lesions. Distribution of the examined proteins had a significant association with the lesions. As compared with the OVLs, the number of immunostained-positive cells was significantly higher in the OVCs and lower in the OVH cases. During follow-up, 24% of the OVLs underwent malignant transformation for which high HuR expression and a diffuse staining pattern in the epithelium were observed. Taken together, the high degree of HuR expression with diffuse staining pattern in the epithelium may be an effective diagnostic tool that determines the potential of OVLs for malignant transformation.
منابع مشابه
Tissue eosinophils as a histopathological marker in oral premalignant and malignant lesions: a histochemical study
Introduction: Although recent studies show the association of eosinophils with different tumors including oral malignancies, the role of eosinophils in premalignant conditions of the oral cavity is not known precisely. Therefore, this study aimed to determine the number of eosinophils in premalignant and malignant conditions of the oral cavity and its role in progression to malignancy. Materia...
متن کاملImmunohistochemical Comparison of E-cadherin Expression in Oral Lichen Planus with and without Dysplasia
Objectives: E-cadherin is a transmembrane glycoprotein, which is responsible for cell adhesion and its expression decreases in dysplastic lesions. This study aimed to assess the expression of this marker in oral lichen planus (OLP) with and without dysplasia to assess its potential for use as a predictor of malignant transformation. Methods: This descriptive, cross-sectional study w...
متن کاملAngiogenesis and Tumor-Associated Macrophages in Different Grades of Oral Squamous Cell Carcinoma, Verrucous Carcinoma and Epithelial Dysplasia via Immunohistochemical Assessment of Expression of CD34 and CD68 Markers
Background:Squamous cell carcinoma (SCC) is the most common malignancy of the oral cavity, which is highly invasive. Verrucous carcinoma (VC) is the low-grade form of SCC. Epithelial dysplasia (ED) also has a malignant potential. This immunohistochemical (IHC) study aimed to assess angiogenesis and the presence of tumor-associated macrophages (TAMs) in SCC, VC and ED to determi...
متن کاملHistopathologic evaluation of Verrucous skin lesions in renal transplant recipients
Background: Warts are common in renal allograft recipients (RAR) with reported incidence of 24% to 100%. These patients also demonstrate an accelerated malignant transformation of warts. Although in immunocompetent patients, the histology of common warts is quite predictable, this is not so in RAR. Objective: The purpose of this study was to evaluate the histopathologic findings of warty lesion...
متن کاملASSESSMENT OF TUMOR MARKERS IN BENIGN, DYSPLASTIC AND MALIGNANT ORAL MUCOSAL LESIONS
Immunohistochemical demonstration of tumor-associated markers may be valuable as an adjunct to conventional histology for determination of malignancy development in oral mucosal diseases. Accordingly, the present study determined the distribution of some important tumor markers such as heat shock proteins (HSP), fibroblast growth factors (FGF) and transferrin receptors (TF-R) in 22 samples ...
متن کامل