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Dopamine induces growth inhibition and vascular normalization through reprograming M2-polarized macrophages in rat C6 glioma.
Abstract Dopamine (DA), a monoamine catecholamine neurotransmitter with antiangiogenic activity, stabilizes tumor vessels in colon, prostate and ovarian cancer, thus increases chemotherapeutic efficacy. Here, in the rat C6 glioma models, we investigated the vascular normalization effects of DA and its mechanisms of action. DA (25, 50 mg/kg) inhibited tumor growth, while a precursor of DA (levodopa) prolonged the survival time of rats bearing orthotopic C6 glioma. DA improved tumor perfusion, with significant effects from day 3, and a higher level at day 5 to 7. In addition, DA decreased microvessel density and hyp...
Source: Toxicology and Applied Pharmacology - March 25, 2015 Category: Toxicology Authors: Qin T, Wang C, Chen X, Duan C, Zhang X, Zhang J, Chai H, Tang T, Chen H, Yue J, Li Y, Yang J Tags: Toxicol Appl Pharmacol Source Type: research