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Estrogen receptor-binding fragment-associated gene 9 expression and its clinical significance in human testicular cancer. 2009

Tetsuya Fujimura, and Satoru Takahashi, and Tomohiko Urano, and Liu Xiaoqiang, and Tetsuo Ogushi, and Masami Muramatsu, and Yasuyoshi Ouchi, and Tadaichi Kitamura, and Yukio Homma, and Satoshi Inoue
Department of Urology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan.

OBJECTIVE We previously demonstrated that estrogen receptor-binding fragment-associated gene 9 (EBAG9) is a tumor promoting factor in renal cell carcinoma (Ogushi T, Cancer Res. 2005; 65: 3700). Here, we evaluated EBAG9 expression and its clinical significance in normal and malignant human testicular tissues. METHODS We investigated the expression of EBAG9 in 90 testicular specimens (28 benign testicular tissue and 62 testicular germ cell tumor samples) by immunohistochemistry using rabbit polyclonal anti-EBAG9 antibody. RESULTS Positive immunostaining of EBAG9 in the cytoplasm was found in 32 (52%) cancerous lesions, whereas the immunoreactivity of EBAG9 was weak in benign testicular tissues. Serum lactate dehydrogenaze (LDH) level was significantly higher in EBAG9-positive cases (715.0 +/- 727.3) compared with the negative cases (221.4 +/- 126.8) (P = 0.0016). The EBAG9-positive cases among the patients with advanced clinical stage (Stage II and III) more frequently belonged to the intermediate or poor risk group in the International Germ Cell Consensus Prognostic Classification System (IGCCPCS), compared with the EBAG9-negative cases (P = 0.0012). CONCLUSIONS These findings suggest that increased expression of EBAG9 may play a significant role in cancer progression and aggressiveness in testicular germ cell tumors.

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
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009373 Neoplasms, Germ Cell and Embryonal Neoplasms composed of primordial GERM CELLS of embryonic GONADS or of elements of the germ layers of the EMBRYO, MAMMALIAN. The concept does not refer to neoplasms located in the gonads or present in an embryo or FETUS. Germ Cell Cancer,Germ Cell Tumor,Neoplasms, Embryonal and Mixed,Cancer, Embryonal,Cancer, Embryonal and Mixed,Embryonal Neoplasms,Germ Cell Neoplasms,Germ Cell and Embryonal Neoplasms,Germ Cell and Embryonic Neoplasms,Neoplasms, Embryonal,Neoplasms, Germ Cell,Neoplasms, Germ Cell and Embryonic,Cancer, Germ Cell,Cancers, Embryonal,Cancers, Germ Cell,Embryonal Cancer,Embryonal Cancers,Embryonal Neoplasm,Germ Cell Cancers,Germ Cell Tumors,Neoplasm, Embryonal,Tumor, Germ Cell,Tumors, Germ Cell
D009919 Orchiectomy The surgical removal of one or both testicles. Castration, Male,Orchidectomy,Castrations, Male,Male Castration,Male Castrations,Orchidectomies,Orchiectomies
D011336 Probability The study of chance processes or the relative frequency characterizing a chance process. Probabilities
D011379 Prognosis A prediction of the probable outcome of a disease based on a individual's condition and the usual course of the disease as seen in similar situations. Prognostic Factor,Prognostic Factors,Factor, Prognostic,Factors, Prognostic,Prognoses
D005629 Frozen Sections Thinly cut sections of frozen tissue specimens prepared with a cryostat or freezing microtome. Frozen Section,Section, Frozen,Sections, Frozen
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000293 Adolescent A person 13 to 18 years of age. Adolescence,Youth,Adolescents,Adolescents, Female,Adolescents, Male,Teenagers,Teens,Adolescent, Female,Adolescent, Male,Female Adolescent,Female Adolescents,Male Adolescent,Male Adolescents,Teen,Teenager,Youths

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