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Chronic predator scent stress alters serotonin and dopamine levels in the rat thalamus and hypothalamus, respectively.
General Physiology and Biophysics 2019 March 2
The aim of this study was to investigate the effect of chronic predator scent stress (PSS) on monoamine levels in rat thalamus and hypothalamus. Rats were exposed to the PSS (sand containing cat urine) for ten minutes daily for ten days. Control animals were exposed to the sand containing clean water. Fifteen days later, rats' behavior and thalamic and hypothalamic levels of monoamines were analyzed. PSS rats had elevated anxiety, increased thalamic serotonin and decreased hypothalamic dopamine concentrations. This decrease in hypothalamic dopamine may explain, at least in part, lowered corticosterone levels observed in PSS animals in our previous studies.
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