The role of dorsal third ventricle α2 adrenergic antagonism or glucocorticoid antagonism in modulating the neuroendocrine stress response to acute ozone exposure

Dorsal third ventricle infusions of the alpha 2 adrenergic receptor antagonist, mianserin- which increases brain concentrations of dopamine, serotonin, and acetylcholine, or the glucocorticoid receptor antagonist, mifepristone, were performed in male WKY rats prior to acute ozone exposure at 0.8 ppm for 4 hours. This experiment was designed to target hippocampal and hypothalamic neuromodulation to determine the role of indoleamines, monoamines, and glucocorticoids in mediating the systemic and pulmonary effects to ozone exposure.