The relation between superoxide dismutase in cancer tissue and clinico pathological features in breast cancer

Katsumi Iwase, Kanefusa Kato, Susumu Ohtani, Toru Tsujimura, Tsunekazu Hanai, Asako Inagaki, Shin Jimbo, Naomi Kobayasm, Haruo Yamamoto, Akio Nagasaka, Kaoru Miura

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The localization of Cu/Zn-and Mn-superoxide dismutase (SOD) in breast cancer tissue (12 papillotubular carcinomas, 21 solid-tubular carcinomas, 16 scirrhous carcinomas, 1 medullary carcinoma, 1 secreting carcinoma, 1 lobular carcinoma, 1 Paget's disease) was investigated via an immunohistochemical technique using antihuman Cu/Zn-and Mn-SOD antibodies in 10% formalin fixed-paraffin embedded thin sections. Both SODs stained strongly in the normal breast gland, but not clearly in many cancer tissues. Furthermore, Cu/Zn-SOD stained more strongly in well differentiated tubular carcinomas than in poorly differentiated tubular carcinomas. It tended to stain less in tumors which recurred or had a poor outcome, and in tumors with a diploid pattern on DNA flow cytometry. Mn-SOD staining was similar to that of Cu/Zn-SOD, but no significant differences among subgroups was found, since the incidence of positively staining tumors was too small in all groups. The intensity of SOD staining seems to change in relation to cell proliferation and differentiation in breast carcinoma, and may be a prognostic indicator, since SOD decreased in poorly differentiated carcinoma and in tumors which developed distant metastasis. Thus, the localization of SOD in breast cancer tissue can provide useful information for cancer treatment.

Original languageEnglish
Pages (from-to)155-160
Number of pages6
JournalBreast Cancer
Volume4
Issue number3
DOIs
Publication statusPublished - 10-1997

All Science Journal Classification (ASJC) codes

  • Oncology
  • Radiology Nuclear Medicine and imaging
  • Pharmacology (medical)

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