Estradiol levels modulate brain activity and negative responses to psychosocial stress across the menstrual cycle.

TitleEstradiol levels modulate brain activity and negative responses to psychosocial stress across the menstrual cycle.
Publication TypeJournal Article
Year of Publication2015
AuthorsAlbert K, Pruessner J, Newhouse P
JournalPsychoneuroendocrinology
Volume59
Pagination14-24
Date Published2015 Sep
ISSN1873-3360
KeywordsAdolescent, Adult, Affect, Brain, Brain Mapping, Cross-Sectional Studies, Estradiol, Female, Humans, Hydrocortisone, Magnetic Resonance Imaging, Menstrual Cycle, Middle Aged, Saliva, Stress, Psychological, Young Adult
Abstract

Although ovarian hormones are thought to have a potential role in the well-known sex difference in mood and anxiety disorders, the mechanisms through which ovarian hormone changes contribute to stress regulation are not well understood. One mechanism by which ovarian hormones might impact mood regulation is by mediating the effect of psychosocial stress, which often precedes depressive episodes and may have mood consequences that are particularly relevant in women. In the current study, brain activity and mood response to psychosocial stress was examined in healthy, normally cycling women at either the high or low estradiol phase of the menstrual cycle. Twenty eight women were exposed to the Montreal Imaging Stress Task (MIST), with brain activity determined through functional magnetic resonance imaging, and behavioral response assessed with subjective mood and stress measures. Brain activity responses to psychosocial stress differed between women in the low versus high estrogen phase of the menstrual cycle: women with high estradiol levels showed significantly less deactivation in limbic regions during psychosocial stress compared to women with low estradiol levels. Additionally, women with higher estradiol levels also had less subjective distress in response to the MIST than women with lower estradiol levels. The results of this study suggest that, in normally cycling premenopausal women, high estradiol levels attenuate the brain activation changes and negative mood response to psychosocial stress. Normal ovarian hormone fluctuations may alter the impact of psychosocially stressful events by presenting periods of increased vulnerability to psychosocial stress during low estradiol phases of the menstrual cycle. This menstrual cycle-related fluctuation in stress vulnerability may be relevant to the greater risk for affective disorder or post-traumatic stress disorder in women.

DOI10.1016/j.psyneuen.2015.04.022
Alternate JournalPsychoneuroendocrinology
PubMed ID26123902
PubMed Central IDPMC4492530
Grant ListUL1 TR000445 / TR / NCATS NIH HHS / United States
R01 AG021476 / AG / NIA NIH HHS / United States
M01 RR000109 / RR / NCRR NIH HHS / United States
MO1RR00109 / RR / NCRR NIH HHS / United States
NIAR01AG021476 / AG / NIA NIH HHS / United States