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Systemic injections of the neurosteroid progesterone improve cognitive recovery after traumatic brain injury (TBI) and stroke, and decrease molecular indicators of neuronal damage. Suddenly withdrawing progesterone after repeated dosing (PW) exacerbates ischemia and causes increased anxiety, seizure susceptibility, and excitotoxicity.Adult male Sprague–Dawley rats received either bilateral medial...
Previous work from this laboratory has demonstrated that withdrawal from the neuroactive steroid 3α,5α-THP (3α-hydroxy-5α-pregnan-20-one) after 3-week exposure to its parent compound, progesterone (P), increases anxiety and produces benzodiazepine (BDZ) insensitivity in female rats. These events were linked to upregulation of the α4 subunit of the GABA A receptor (GABAR) in the hippocampus...
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