Significance of expression of Flt-4 in different histopa thological grades of astrocytoma / 中国病理生理杂志

ABSTRACT

AIM: To study the significance of expressio n of fms-like tyrosine kinase 4 (Flt-4) in different histopathological grades of a strocytoma. METHODS: The surgical specimens from 50 brain astrocytoma patien ts were stained immunohistochemically for examining Flt-4 and vascular endotheli al growth factor (VEGF) expression. Intratumoral microvessel density (IMVD) was calculated by labeling the endothelial cells of the blood vessels within the tum or. RESULTS: Flt-4, VEGF expression were closely correlated with his topathological grades of astrocytoma. Flt-4 and VEGF expression were found in 52 % (26/50), 60% (30/50) of tumors. A significant correlation was found between Fl t-4 and VEGF expression (P