A single lipopolysaccharide administration is sufficient to induce a long-term desensitization of the hypothalamic-pituitary-adrenal axis.


We have previously shown that a single exposure of adult rats to a severe emotional stressor such as immobilization is able to exert a long-term desensitization of the response of the hypothalamic-pituitary-adrenal (HPA) axis to the same stimulus when applied days to weeks later. Surprisingly, the intensity of the effect increased with time elapsed between… (More)


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