Immunohistochemical heterogeneity of type 1 blood group antigen expressions in testicular germ cell tumors

  • Authors:
    • S. Kamoshida
    • Y. Satoh
    • M. Yasuda
    • H. Kajiwara
    • K. Tsukinoki
    • R. Y. Osamura
  • View Affiliations

  • Published online on: July 1, 2002     https://doi.org/10.3892/or.9.4.845
  • Pages: 845-851
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Abstract

The immunohistochemical expression of type 1 blood group antigens (type 1 BGAs) was analyzed for 30 cases of testicular germ cell tumors (TGCTs), using monoclonal antibodies against DU-PAN-2, CA19-9, Lewisa (Lea), and Lewisb (Leb). DU-PAN-2 was expressed very frequently in all of the embryonal carcinomas (ECs). CA19-9 expression was demonstrated in 53% of ECs, but the number of positive cells was generally smaller than that for DU-PAN-2. CA19-9-negative ECs tended to show a higher number of DU-PAN-2-positive cells compared to CA19-9-positive ECs, and ECs in which DU-PAN-2 was more strongly expressed showed a relatively frequent expression of CA19-9. In 36% of seminomas and 56% of yolk sac tumors (YSTs), DU-PAN-2 was weakly expressed, and the positive cells were few in number. Little or no expression of CA19-9 was demonstrated in seminomas and YSTs. Regarding Lea and Leb, the expressions were found to be limited to teratomas at a frequency of 57% and 86%, respectively, with the exception of one EC positive for Lea and one YST positive for Leb. Eighty-six percent of teratomas showed expressions of DU-PAN-2 and CA19-9. DU-PAN-2 was also seen in some intratubular malignant germ cells. The antibodies used were all negative for choriocarcinomas, syncytiotrophoblastic giant cells, and normal testicular tissues. The antigen expressions were predominantly observed on the surface of tumor cells developing luminal structures. In conclusion, although CA19-9 was relatively specific for ECs, it should be emphasized that ECs were rather characteristic of extensive DU-PAN-2 expression. Particularly in CA19-9-negative ECs, a combined analysis of DU-PAN-2 and CA19-9 would be helpful in confirming the histopathologic diagnosis of TGCTs. The clinical significance of DU-PAN-2 in ECs as a tumor marker remains to be clarified. Lea and Leb expressions were thought to be related to the differentiation or maturation rather than to the malignant transformation in TGCTs.

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July-August 2002
Volume 9 Issue 4

Print ISSN: 1021-335X
Online ISSN:1791-2431

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Spandidos Publications style
Kamoshida S, Satoh Y, Yasuda M, Kajiwara H, Tsukinoki K and Osamura RY: Immunohistochemical heterogeneity of type 1 blood group antigen expressions in testicular germ cell tumors. Oncol Rep 9: 845-851, 2002
APA
Kamoshida, S., Satoh, Y., Yasuda, M., Kajiwara, H., Tsukinoki, K., & Osamura, R.Y. (2002). Immunohistochemical heterogeneity of type 1 blood group antigen expressions in testicular germ cell tumors. Oncology Reports, 9, 845-851. https://doi.org/10.3892/or.9.4.845
MLA
Kamoshida, S., Satoh, Y., Yasuda, M., Kajiwara, H., Tsukinoki, K., Osamura, R. Y."Immunohistochemical heterogeneity of type 1 blood group antigen expressions in testicular germ cell tumors". Oncology Reports 9.4 (2002): 845-851.
Chicago
Kamoshida, S., Satoh, Y., Yasuda, M., Kajiwara, H., Tsukinoki, K., Osamura, R. Y."Immunohistochemical heterogeneity of type 1 blood group antigen expressions in testicular germ cell tumors". Oncology Reports 9, no. 4 (2002): 845-851. https://doi.org/10.3892/or.9.4.845