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http://dx.doi.org/10.7314/APJCP.2015.16.17.7843

Protein Expression of Stromelysin-2 in Head and Neck Squamous Cell Carcinomas  

Kadeh, Hamideh (Oral and Dental Disease Research Center, Dept. of Oral and Maxillofacial Pathology, School of Dentistry)
Heydari, Fatemeh (Department of Pathology, School of Medicine, Zahedan University of Medical Sciences)
Saravani, Shirin (Oral and Dental Disease Research Center, Dept. of Oral and Maxillofacial Pathology, School of Dentistry)
Ghodsi, Iman Najafi (General Dentist)
Publication Information
Asian Pacific Journal of Cancer Prevention / v.16, no.17, 2015 , pp. 7843-7846 More about this Journal
Abstract
Background: Some matrix metalloproteinases (MMPs) are involved in invasion and metastasis of head and neck squamous cell carcinoma (HNSCC). However, there are few studies on association between stromelysin-2 (ST-2) and invasive behavior of HNSCC. The purpose of this study was to investigate Stromelysin-2 expression by immunohistochemistry. Materials and Methods: This study was conducted on 81 specimens, including 61 HNSCC and 20 non neoplastic epithelium. Sections with 5 micron thickness were prepared and stained with immunohistochemistry technique. Then expression of ST-2 was evaluated according to percentage of stained cells and intensity of staining. Data were analyzed by SPSS (V.21) using Kruskal-Wallis and Tukey tests (P<0.05). Results: The 61 HNSCC specimens were grades I 36.1%, II 34.4% and III 29.5%. The level of ST-2 expressions were moderate (++) and intensive (+++) in 21.3% and 78.7% of tumors, respectively. The ST-2 expression level was only significant between the tumors with grade I and grade III (P=0.016). Tumors presented ST-2 expression with staining intensity of mild 6.6%, moderate 26.2% and strong 67.2%. Staining intensity of ST-2 in grade I tumors was significantly lower than grade II and grade III (P<0.05), and there was no significant difference between grades II and III (P=0.99). Conclusions: According to this study, the expression of ST-2 is associated with histopathological grade and tumor differentiation in HNSCCs.
Keywords
Head and neck squamous cell carcinoma; immunohistochemistry; stromelysin-2;
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