Aberrant DKK3 expression in the oral leukoplakia and oral submucous fibrosis: a comparative immunohistochemical study

Submitted: 29 January 2016
Accepted: 1 June 2016
Published: 16 June 2016
Abstract Views: 1902
PDF: 687
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We aimed to assess and compare the expression of Dickkopf homolog 3 (DKK3), a possible tumor suppressor gene (TSG), in oral leukoplakia (OLK) and oral submucous fibrosis (OSF) using immunohistochemistry. Seventy-five cases of normal oral mucosa (NOM), OLK, OSF, and squamous cell carcinoma (OSCC) were studied. DKK3 was expressed in all cases of NOM, OLK and OSCC. There was steady increases in the percentage of the positive cells progressing toward OSCC. The expression was localized in the cytoplasm and cell membrane of cell affected by OLK with mild dysplasia and OLK with severe dysplasia. No significant association was observed between DKK3 expression and dysplastic status of OLK. Loss of DKK3 expression was observed in 15 of 30 cases in the OSF group, which was significantly associated with histological grade of OSF (P<0.0001). The percentage of positive cells gradually declined with the increasing severity of epithelial atrophy. A significant difference (P<0.01) was observed when comparing DKK3 expression among different groups of OLK and OSF cases. DKK3 may have diverse expressions in oral premalignant lesions. Loss of DKK3 expression in dysplastic/advanced stage of OSF may imply a high risk of progression to oral cancer.

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T. Al-dhohorah, Central South University, Ibb University

Department of oral pathology, Xiangya Stomaltology Hospital, College of Stomatology, Central South University, Changsha, Hunan, China

Department of oral and Maxillofacial pathology, Faculty of Dentistry, Ibb University, Yemen.

How to Cite

Al-dhohorah, T., Mashrah, M., Yao, Z., & Huang, J. (2016). Aberrant DKK3 expression in the oral leukoplakia and oral submucous fibrosis: a comparative immunohistochemical study. European Journal of Histochemistry, 60(2). https://doi.org/10.4081/ejh.2016.2629

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