Objective: To investigate the protective effect and mechanisms of noble dendrobium polysaccharides(NDP) on lipopolysaccharide(LPS)-induced neuron injures in cerebral cortex glial cells and neuron mixed cultures of rat cortical of newborn rats. Methods: The primary cultures of cortical neurons and glial cells of newborn rats were prepared and verified the existence of neurons,astrocytes,and microglia respectively. NDP was added to LPS-induced mixed cultures of rat cortical,and the protein expressions of IL~(...