Coordinated interaction of neurogenesis and angiogenesis in the adult songbird brain - PubMed (original) (raw)
Coordinated interaction of neurogenesis and angiogenesis in the adult songbird brain
Abner Louissaint Jr et al. Neuron. 2002.
Free article
Abstract
Neurogenesis proceeds throughout life in the higher vocal center (HVC) of the adult songbird neostriatum. Testosterone induces neuronal addition and endothelial division in HVC. We asked if testosterone-induced angiogenesis might contribute importantly to HVC neuronal recruitment. Testosterone upregulated both VEGF and its endothelial receptor, VEGF-R2/Quek1/KDR, in HVC. This yielded a burst in local HVC angiogenesis. FACS-isolated HVC endothelial cells produced BDNF in a testosterone-dependent manner. In vivo, HVC BDNF rose by the third week after testosterone, lagging by over a week the rise in VEGF and VEGF-R2. In situ hybridization revealed that much of this induced BDNF mRNA was endothelial. In vivo, both angiogenesis and neuronal addition to HVC were substantially diminished by inhibition of VEGF-R2 tyrosine kinase. These findings suggest a causal interaction between testosterone-induced angiogenesis and neurogenesis in the adult forebrain.
Comment in
- Adult neurogenesis and the vascular Nietzsche.
Palmer TD. Palmer TD. Neuron. 2002 Jun 13;34(6):856-8. doi: 10.1016/s0896-6273(02)00738-9. Neuron. 2002. PMID: 12086632
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