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Original Article
- Midkine Gene Expression in Gastric Cancer Tissues
- Hyun Joo Kwak, Yong Bae Kim, Byung Soh Min, Ho Young Maeng, Sung Hoon Song, Hye Weon Chung, Tae Soo Kim, Hei Cheol Chung, Sun Young Rha, Hyun Cheol Chung, Sung Hoon Noh, Joo Hang Kim, Jae Kyung Roh, Jin Sik Min, Byung Soo Kim
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Journal of the Korean Cancer Association 1997;29(2): 204-211.
1Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea.
2Cancer Research Institute, Yonsei University College of Medicine, Seoul, Korea.
3Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.
4Department of General Surgery, Yonsei University College of Medicine, Seoul, Korea.
2Cancer Research Institute, Yonsei University College of Medicine, Seoul, Korea.
3Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.
4Department of General Surgery, Yonsei University College of Medicine, Seoul, Korea.
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Abstract
PURPOSE
We evaluated the clinical significance of the tumor growth factor, midkine (MK), in paired gastric cancer and normal tissues.
MATERIALS AND METHODS
Twenty paired normal and cancer tissues were tested for MK mRNA expression by Northern blot analysis. Vessel staining was done by immunohistochemical staining using CD-31 monoclonal antibody (Dako).
RESULTS
MK mRNA was mainly expressed in cancer tissues (11 versus 1). Lymph node metastasis, pathological stage and tumor differentiation did not correlate with MK expression.
However, MK expression rate increased with increment in tumor size (p=0.05). Microvascular density did not correlate with tumor invasion, lymph node metastasis, and pathological stages. However, there was a tendency of vascular density increment with MK expression in T1-T2 stage.
CONCLUSION
MK was mainly expressed in larger gastric cancer tissues suggesting its role in cancer growth in vivo. But no definite correlation between MK expression and tumor microvascular density was found.
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