Korean Journal of Head & Neck Oncology (대한두경부종양학회지)

The Korean Society for Head and Neck Oncology (대한두경부종양학회)
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Expression of Matrix Metalloproteinase 2 and Tissue Inhibitor of Metalloproteinase 2 in Papillary Microcarcinoma of the Thyroid Gland are Not Related with Extrathyroid Invasion, Multifocality and Lymph Node Metastasis of the Tumor

갑상선 유두상미세암종에서 갑상선외 침윤, 다원성 및 경부전이에 대한 Matrix Metalloproteinase 2 및 Tissue Inhibitor of Matrix Metalloproteinase 2 발현의 의의 : 부정적 결과 보고

  • Choi Seung-Ho (Departments of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Nam Soon-Yuhl (Departments of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Cho Kyung-Ja (Departments of Pathology, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Kim Sang-Yoon (Departments of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine)
  • 최승호 (울산대학교 의과대학 서울아산병원 이비인후과학교실) ;
  • 남순열 (울산대학교 의과대학 서울아산병원 이비인후과학교실) ;
  • 조경자 (울산대학교 의과대학 서울아산병원 병리학교실) ;
  • 김상윤 (울산대학교 의과대학 서울아산병원 이비인후과학교실)
  • Published : 2005.11.01
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Abstract

Objectives: To investigate the role of MMP-2 and TIMP-2 in the invasion and metastasis of thyroid papillary microcarcinomas. Materials and Methods: We performed immunohistochemical study on MMP-2 and its tissue inhibitor (TIMP-2) using tissue microarrays containing 2 cores of 40 microPTC and 8 non-neoplastic thyroid tissue. The expression intensity was semiquantitatively scored as -, ${\pm}$, +1, +2, and +3. Results: Both MMP-2 and TIMP-2 expression was observed in all tumors(100%) and in 1 of 8 non-neoplastic tissue(12.5%), and the positive staining was restricted to the epithelial cells. In 17 and 23 tumors with or without extrathyroid invasion, respectively, 8(47%) and 10(43%) cases showed moderate to strong(+23) positivity for MMP-2. TIMP-2 expression was moderate to strong in 13 cases(76%) and 16 cases(70%) in each group. In multifocal and solitary tumors, 3 of 6(50%) and 11 of 21(52%) cases showed moderate to strong MMP-2 expression, and 5/6(83%) and 15/21(71%) showed moderate to strong TIMP-2 expression. Conclusion: There is no relationship between MMP-2 or TIMP-2 expression and extrathyroid invasion or tumor multifocality in papillary microcarcinoma of the thyroid gland.

Keywords

References

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