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Relationship of cell proliferation (Ki-67) to 99mTc-(V)DMSA uptake in breast cancer.

Papantoniou, VJ and Souvatzoglou, MA and Valotassiou, VJ and Louvrou, AN and Ambela, C and Koutsikos, J and Lazaris, D and Christodoulidou, JK and Sotiropoulou, MG and Melissinou, MJ and Perperoglou, A and Tsiouris, S and Zerva, CJ (2004) 'Relationship of cell proliferation (Ki-67) to 99mTc-(V)DMSA uptake in breast cancer.' Breast cancer research : BCR, 6 (2). ISSN 1465-542X

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INTRODUCTION: The aim of the present study was to identify the relationships between the uptake of radiotracers - namely pentavalent dimercaptosuccinic acid [(V)DMSA] and sestamibi (MIBI) - and the following parameters in primary breast cancer: steroid receptor concentrations (i.e. estrogen receptor [ER] and progesterone receptor [PR]), Ki-67 expression, tumor size, tumor grade, age, and levels of expression of p53 and c-erbB-2. In addition, by multivariate regression analysis, we further isolated those factors with independent associations with (V)DMSA and/or MIBI uptake in primary breast cancer. METHODS: Thirty-four patients with histologically confirmed breast carcinoma underwent preoperative scintimammography with technetium-99m (99mTc)-(V)DMSA and/or 99mTc-MIBI in consecutive sessions 10 and 60 min after administration of 925-1110 MBq of each radiotracer. The tumor-to-background ratio was calculated and correlated with the presence of ER, PR, Ki-67, tumor size, tumor grade, p53, and c-erbB-2. ER, PR, p53, and c-erbB-2 were determined immunohistochemically. The analysis included tumor-to-background ratio of (V)DMSA and MIBI uptake as dependent and all of the other parameters as independent variables. RESULTS: Correlation was positive between Ki-67 and (V)DMSA (r = 0.37 at 10 min, P = 0.038; r = 0.42 at 60 min, P = 0.018) and inverse between PR and (V)DMSA uptake (r = -0.46 at 10 min, P = 0.010; r = -0.51 at 60 min, P = 0.003). Multivariate regression analysis demonstrated a positive correlation between Ki-67 and (V)DMSA at 60 min (P = 0.045). Ki-67 was not significantly correlated with MIBI uptake, whereas tumor size was positively correlated with MIBI uptake at 60 min both in univariate (r = 0.45, P = 0.027) and multivariate analysis (P = 0.024). Negative correlations were observed between (V)DMSA uptake and ER, as well as between ER/PR and MIBI uptake, but these were not significant. CONCLUSION: Ki-67 appears to represent the major independent factor affecting (V)DMSA uptake in breast cancer. Tumor size was the only independent parameter influencing MIBI uptake in breast cancer. (V)DMSA appears to have an advantage over MIBI in that it can be used to visualize tumors with intense proliferative activity, and thus it can identify those tumors that are more aggressive.

Item Type: Article
Subjects: R Medicine > R Medicine (General)
R Medicine > RC Internal medicine > RC0254 Neoplasms. Tumors. Oncology (including Cancer)
R Medicine > RG Gynecology and obstetrics
Divisions: Faculty of Science and Health > Mathematical Sciences, Department of
Depositing User: Aris Perperoglou
Date Deposited: 06 Nov 2012 14:21
Last Modified: 23 Jan 2019 05:15

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