Abstract
Current strategies combining anti-angiogenic drugs with chemotherapy provide clinical benefit in cancer patients. It is assumed that anti-angiogenic drugs, such as bevacizumab, transiently normalize abnormal tumor vasculature and contribute to improved delivery of subsequent chemotherapy. To investigate this concept, a study was performed in non-small cell lung cancer (NSCLC) patients using positron emission tomography (PET) and radiolabeled docetaxel ([(11)C]docetaxel). In NSCLC, bevacizumab reduced both perfusion and net influx rate of [(11)C]docetaxel within 5 hr. These effects persisted after 4 days. The clinical relevance of these findings is notable, as there was no evidence for a substantial improvement in drug delivery to tumors. These findings highlight the importance of drug scheduling and advocate further studies to optimize scheduling of anti-angiogenic drugs.
Copyright © 2012 Elsevier Inc. All rights reserved.
Publication types
-
Clinical Trial
-
Research Support, Non-U.S. Gov't
MeSH terms
-
Aged
-
Angiogenesis Inhibitors / administration & dosage*
-
Angiogenesis Inhibitors / pharmacology
-
Angiogenesis Inhibitors / therapeutic use
-
Antibodies, Monoclonal, Humanized / administration & dosage*
-
Antibodies, Monoclonal, Humanized / pharmacology
-
Antibodies, Monoclonal, Humanized / therapeutic use
-
Antineoplastic Agents / administration & dosage
-
Antineoplastic Agents / pharmacokinetics*
-
Antineoplastic Agents / therapeutic use
-
Antineoplastic Combined Chemotherapy Protocols*
-
Bevacizumab
-
Bone Marrow / metabolism
-
Carcinoma, Non-Small-Cell Lung / drug therapy*
-
Docetaxel
-
Drug Administration Schedule
-
Female
-
Humans
-
Lung Neoplasms / drug therapy*
-
Male
-
Metabolic Clearance Rate
-
Middle Aged
-
Neovascularization, Pathologic / drug therapy
-
Positron-Emission Tomography
-
Taxoids / administration & dosage
-
Taxoids / pharmacokinetics*
-
Taxoids / therapeutic use
-
Thyroid Gland / drug effects
-
Thyroid Gland / metabolism
-
Vascular Endothelial Growth Factor A / blood
Substances
-
Angiogenesis Inhibitors
-
Antibodies, Monoclonal, Humanized
-
Antineoplastic Agents
-
Taxoids
-
VEGFA protein, human
-
Vascular Endothelial Growth Factor A
-
Docetaxel
-
Bevacizumab