Decrease in cortisol reverses human hippocampal atrophy following treatment of Cushing's disease.

Abstract:

BACKGROUND:Decreased hippocampal volume is observed in patients with Cushing's syndrome and other conditions associated with elevated cortisol levels, stress, or both. Reversibility of hippocampal neuronal atrophy resulting from stress occurs in animals. Our study investigated the potential for reversibility of human hippocampal atrophy. METHODS:The study included 22 patients with Cushing's disease. Magnetic resonance brain imaging was performed prior to transsphenoidal microadenomectomy and again after treatment. RESULTS:Following treatment, hippocampal formation volume (HFV) increased by up to 10%. The mean percent change (3.2 +/- 2.5) was significantly greater (p < .04) than that of the comparison structure, caudate head volume (1.5 +/- 3.4). Increase in HFV was significantly associated with magnitude of decrease in urinary free cortisol (r = -.61, p < .01). This relationship strengthened after adjustments for age, duration of disease, and months elapsed since surgery (r = -.70, p < .001). There was no significant correlation between caudate head volume change and magnitude of cortisol decrease. CONCLUSIONS:Changes in human HFV associated with sustained hypercortisolemia are reversible, at least in part, once cortisol levels decrease. While many brain regions are likely affected by hypercortisolemia, the human hippocampus exhibits increased sensitivity to cortisol, affecting both volume loss and recovery.

journal_name

Biol Psychiatry

journal_title

Biological psychiatry

authors

Starkman MN,Giordani B,Gebarski SS,Berent S,Schork MA,Schteingart DE

doi

10.1016/s0006-3223(99)00203-6

subject

Has Abstract

pub_date

1999-12-15 00:00:00

pages

1595-602

issue

12

eissn

0006-3223

issn

1873-2402

pii

S0006-3223(99)00203-6

journal_volume

46

pub_type

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