TY - JOUR
T1 - Vascular endothelial growth factor A protein level and gene expression in intracranial meningiomas with brain edema
AU - Nassehi, Damoun
AU - Dyrbye, Henrik
AU - Andresen, Morten
AU - Thomsen, Carsten
AU - Juhler, Marianne
AU - Laursen, Henning
AU - Broholm, Helle
N1 - © 2011 The Authors. APMIS © 2011 APMIS.
PY - 2011/12
Y1 - 2011/12
N2 - Nassehi D, Dyrbye H, Andresen M, Thomsen C, Juhler M, Laursen H, Broholm H. Vascular endothelial growth factor A protein level and gene expression in intracranial meningiomas with brain edema. APMIS 2011; 119: 831-43. Meningiomas are the second most common primary intracranial tumors in adults. Although meningiomas are mostly benign, more than 50% of patients with meningioma develop peritumoral brain edema (PTBE), which may be fatal because of increased intracranial pressure. Vascular endothelial growth factor (VEGF) is an endothelial cell-specific mitogen and angiogen. VEGF-A protein, which is identical to vascular permeability factor, is a regulator of angiogenesis. In this study, 101 patients with meningiomas, and possible co-factors to PTBE, such as meningioma subtypes and tumor location, were examined. Forty-three patients had primary, solitary, supratentorial meningiomas with PTBE. In these, correlations in PTBE, edema index, VEGF-A protein, VEGF gene expression, capillary length, and tumor water content were investigated. DNA-branched hybridization was used for measuring VEGF gene expression in tissue homogenates prepared from frozen tissue samples. The method for VEGF-A analysis resembled an ELISA assay, but was based on chemiluminescence. The edema index was positively correlated to VEGF-A protein (p=0.014) and VEGF gene expression (p<0.05). The capillary length in the meningiomas was positively correlated to the PTBE (p=0.038). If VEGF is responsible for the formation of PTBE, the edema may be treated with the anti-VEGF drug Bevacizumab (Avastin), which has been shown to reduce PTBE in patients with glioblastoma multiforme.
AB - Nassehi D, Dyrbye H, Andresen M, Thomsen C, Juhler M, Laursen H, Broholm H. Vascular endothelial growth factor A protein level and gene expression in intracranial meningiomas with brain edema. APMIS 2011; 119: 831-43. Meningiomas are the second most common primary intracranial tumors in adults. Although meningiomas are mostly benign, more than 50% of patients with meningioma develop peritumoral brain edema (PTBE), which may be fatal because of increased intracranial pressure. Vascular endothelial growth factor (VEGF) is an endothelial cell-specific mitogen and angiogen. VEGF-A protein, which is identical to vascular permeability factor, is a regulator of angiogenesis. In this study, 101 patients with meningiomas, and possible co-factors to PTBE, such as meningioma subtypes and tumor location, were examined. Forty-three patients had primary, solitary, supratentorial meningiomas with PTBE. In these, correlations in PTBE, edema index, VEGF-A protein, VEGF gene expression, capillary length, and tumor water content were investigated. DNA-branched hybridization was used for measuring VEGF gene expression in tissue homogenates prepared from frozen tissue samples. The method for VEGF-A analysis resembled an ELISA assay, but was based on chemiluminescence. The edema index was positively correlated to VEGF-A protein (p=0.014) and VEGF gene expression (p<0.05). The capillary length in the meningiomas was positively correlated to the PTBE (p=0.038). If VEGF is responsible for the formation of PTBE, the edema may be treated with the anti-VEGF drug Bevacizumab (Avastin), which has been shown to reduce PTBE in patients with glioblastoma multiforme.
U2 - 10.1111/j.1600-0463.2011.02764.x
DO - 10.1111/j.1600-0463.2011.02764.x
M3 - Journal article
SN - 0903-465X
VL - 119
SP - 831
EP - 843
JO - APMIS. Supplementum
JF - APMIS. Supplementum
IS - 12
ER -