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The expression of thymidine phosphorylase/platelet-derived endothelial cell growth factor is correlated to angiogenesis in breast cancer. 1998

F Yonenaga, and T Takasaki, and Y Ohi, and Y Sagara, and S Akiba, and H Yoshinaka, and T Aikou, and K Miyadera, and S Akiyama, and H Yoshida
Department of Pathology I, Institute for Cancer Research, Faculty of Medicine, Kagoshima University, Japan.

It has been shown that human thymidine phosphorylase (TP) is identical to platelet-derived endothelial cell growth factor and has angiogenic activity. In the present study, the expression of TP was examined in 139 mammary carcinomas and 35 benign mammary disorders using biochemical and immunohistochemical methods. Moreover, in order to evaluate the significance of TP expression in mammary carcinomas, the relationship between vascular density and various clinicopathological factors, including age and menopausal status of patients with a mammary carcinoma, were compared with the size, nodal status, expression of estrogen receptor (ER), progesterone receptor (PgR), c-erbB-2, p53 and TP of a mammary carcinoma. Thymidine phosphorylase expression increased in both the nuclei and cytoplasm of mammary carcinoma cells in comparison to mammary benign disorder cells. The number of microvessels in mammary carcinomas was generally correlated to the number of tumor cells with TP expression in cytoplasm. The number of cells with TP expression in cytoplasm was significantly large in tumors that measured 3-4 cm in diameter, compared with tumors measuring 1-2 and 5-6 cm in diameter. In mammary tumors of 1-4 cm diameter, TP expression and vessel density were significantly high in tumors negative for ER or positive for c-erbB2 and in tumors positive for TP or c-erbB2, respectively; whereas tumors of 5-6 cm in diameter were not modified by any clinicopathological factors. The results indicated that TP plays an important angiogenetic role in mammary carcinomas, especially tumors with a certain progression.

UI MeSH Term Description Entries
D007150 Immunohistochemistry Histochemical localization of immunoreactive substances using labeled antibodies as reagents. Immunocytochemistry,Immunogold Techniques,Immunogold-Silver Techniques,Immunohistocytochemistry,Immunolabeling Techniques,Immunogold Technics,Immunogold-Silver Technics,Immunolabeling Technics,Immunogold Silver Technics,Immunogold Silver Techniques,Immunogold Technic,Immunogold Technique,Immunogold-Silver Technic,Immunogold-Silver Technique,Immunolabeling Technic,Immunolabeling Technique,Technic, Immunogold,Technic, Immunogold-Silver,Technic, Immunolabeling,Technics, Immunogold,Technics, Immunogold-Silver,Technics, Immunolabeling,Technique, Immunogold,Technique, Immunogold-Silver,Technique, Immunolabeling,Techniques, Immunogold,Techniques, Immunogold-Silver,Techniques, Immunolabeling
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009389 Neovascularization, Pathologic A pathologic process consisting of the proliferation of blood vessels in abnormal tissues or in abnormal positions. Angiogenesis, Pathologic,Angiogenesis, Pathological,Neovascularization, Pathological,Pathologic Angiogenesis,Pathologic Neovascularization,Pathological Angiogenesis,Pathological Neovascularization
D001941 Breast Diseases Pathological processes of the BREAST. Endocrine Breast Diseases,Breast Disease,Breast Disease, Endocrine,Breast Diseases, Endocrine,Disease, Breast,Disease, Endocrine Breast,Diseases, Breast,Diseases, Endocrine Breast,Endocrine Breast Disease
D001943 Breast Neoplasms Tumors or cancer of the human BREAST. Breast Cancer,Breast Tumors,Cancer of Breast,Breast Carcinoma,Cancer of the Breast,Human Mammary Carcinoma,Malignant Neoplasm of Breast,Malignant Tumor of Breast,Mammary Cancer,Mammary Carcinoma, Human,Mammary Neoplasm, Human,Mammary Neoplasms, Human,Neoplasms, Breast,Tumors, Breast,Breast Carcinomas,Breast Malignant Neoplasm,Breast Malignant Neoplasms,Breast Malignant Tumor,Breast Malignant Tumors,Breast Neoplasm,Breast Tumor,Cancer, Breast,Cancer, Mammary,Cancers, Mammary,Carcinoma, Breast,Carcinoma, Human Mammary,Carcinomas, Breast,Carcinomas, Human Mammary,Human Mammary Carcinomas,Human Mammary Neoplasm,Human Mammary Neoplasms,Mammary Cancers,Mammary Carcinomas, Human,Neoplasm, Breast,Neoplasm, Human Mammary,Neoplasms, Human Mammary,Tumor, Breast
D002467 Cell Nucleus Within a eukaryotic cell, a membrane-limited body which contains chromosomes and one or more nucleoli (CELL NUCLEOLUS). The nuclear membrane consists of a double unit-type membrane which is perforated by a number of pores; the outermost membrane is continuous with the ENDOPLASMIC RETICULUM. A cell may contain more than one nucleus. (From Singleton & Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed) Cell Nuclei,Nuclei, Cell,Nucleus, Cell
D003593 Cytoplasm The part of a cell that contains the CYTOSOL and small structures excluding the CELL NUCLEUS; MITOCHONDRIA; and large VACUOLES. (Glick, Glossary of Biochemistry and Molecular Biology, 1990) Protoplasm,Cytoplasms,Protoplasms
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults

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