Clinical & Experimental Metastasis

, Volume 16, Issue 7, pp 577–585 | Cite as

Expression of gelatinases A and B, stromelysin-3 and matrilysin genes in breast carcinomas: clinico-pathological correlations

  • Mercia M Pacheco
  • Mario Mourao
  • Edson B Mantovani
  • Ines N Nishimoto
  • M Mitzi Brentani


The purpose of this study was to investigate the association among matrix metalloproteinases (gelatinases A and B, stromelysin-3 (ST3) and matrilysin) mRNAs expressed in primary breast carcinomas and stan-dard prognostic parameters and clinical outcome. mRNA levels were determined by Northern analysis in samples of 81 breast cancer patients (median follow-up, 40 months) and 27 samples of uninvolved adjacent breast tissue. Proteases were expressed by the majority of the tumors and normal breast tissues examined. ST3, gelatinase A and matrilysin mRNAs were more often expressed at high levels in carcinomatous than in normal breast tissues. Differences in the distribution of gelatinase B mRNA were not found. However, paired normal tissues generally produced weaker signals when compared to matched tumor samples. Univariate analysis showed no significant association of gelatinase A and matrilysin mRNAs with the classical prognostic markers (age, menopausal status, stage, size, nodal status, vascular infiltrate, necrosis, steroid receptors, metastasis and survival). Overexpression of ST3 was more frequently found in tumors of post-menopausal women (P < 0.022). Elevated expression of gel B mRNA was associated with the presence of vascular infiltrate (P < 0.026), necrosis (P < 0.039), PR negative tumors (P < 0.014) and inversely corre-lated to the number of survivors (P < 0.021). Multivariate analysis including 68 patients for whom all information was available indicated that neither stromelysin correlated significantly with pathological, clin-ical or biochemical features. High levels of gelatinase A and B mRNAs were inversely associated with the number of survivors. Our findings suggest that measurements of gelatinase A and B mRNAs expression in breast carcinoma may help to identify patients with an agressive form of the disease. ©Lippincott Williams & Wilkins

breast carcinomas matrix metalloproteinases gelatinase A, gelatinase B Stromelysin-3 Matrilysin prognostic parameters> 


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Copyright information

© Chapman and Hall 1998

Authors and Affiliations

  • Mercia M Pacheco
    • 1
  • Mario Mourao
    • 2
  • Edson B Mantovani
    • 3
  • Ines N Nishimoto
    • 2
  • M Mitzi Brentani
    • 3
  1. 1.Divisao de Oncologia Clínica e LaboratorialFundacao Oncocentro de Sao PauloSao Paulo-SPBrasil
  2. 2.Departamento de MastologiaHospital A. C. CamargoSao Paulo-SPBrasil
  3. 3.Servico de MastologiaInstituto Brasileiro de Controle do CancerSao Paulo-SPBrasil

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