Abstract
Podoplanin plays a key role in tumor progression and metastasis. We evaluated lymphatics proliferation rate and podoplanin expression in tumor cells of ovarian carcinoma. Seventy-five paraffin-embedded specimens of ovarian cancer were immunohistochemically assessed in order to quantify peritumoral (LMVDP) and intratumoral (LMVDT) lymphatic microvessel density of proliferating lymphatics and for podoplanin variability in tumor cells. LMVDT correlated with proliferating tumor vessels located in the peritumoral area (p=0.024) and with the number of mature vessels located in the intratumoral area (p<0.0001), while LMVDP correlated with peritumoral mature vessels (p<0.000l). Proliferating tumor cells at the invasive front were highly positive for podoplanin. To the best of our knowledge, this study represents the first assessment of lymphatic endothelial cell proliferation correlated with podoplanin expression in tumor cells from ovarian cancer. Our data support podoplanin as a potential target that may help reduce ovarian cancer dissemination and lymphatic metastasis.
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