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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Alterations in cortisol negative feedback inhibition as examined using the ACTH response to cortisol administration in PTSD.

OBJECTIVE: Studies using the dexamethasone suppression test (DST) have demonstrated an enhanced negative feedback inhibition at the pituitary in PTSD, but have not provided information about central feedback effects, since dexamethasone (DEX) does not penetrate the brain well. The authors therefore examined the change in ACTH and cortisol before and after cortisol administration, which acts at central feedback sites in addition to peripheral targets. METHOD: Blood was obtained from 31 male veterans (18 with PTSD) before, and 8, 40 and 95 min following injection of 17.5 mg cortisol and placebo. RESULTS: A greater decline in ACTH was observed after cortisol injection in PTSD. CONCLUSIONS: Central as well as peripheral negative feedback inhibition may be altered in PTSD.[1]

References

  1. Alterations in cortisol negative feedback inhibition as examined using the ACTH response to cortisol administration in PTSD. Yehuda, R., Yang, R.K., Buchsbaum, M.S., Golier, J.A. Psychoneuroendocrinology (2006) [Pubmed]
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