Figure 7.
Schematic demonstration of the DOR-BDNF-TrkB pathway in brain protection against hypoxic injury. Prolonged hypoxia causes a down-regulation of BDNF-TrkB signals resulting in an increased cortical TNF-α, while DOR activation up-regulates BDNF-TrkB signals thereby decreasing the level of TNF-α in the hypoxic cortex.