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J Clin Endocrinol Metab. 2016 Oct;101(10):3847-3855. Epub 2016 Sep 28.

Independent Contributions of Nocturnal Hot Flashes and Sleep Disturbance to Depression in Estrogen-Deprived Women.

Author information

1
Department of Psychiatry (H.J., S.K., J.C.), Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115; Department of Psychosocial Oncology and Palliative Care (H.J.), Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02215; Department of Psychiatry (H.J., M.P.F., N.E., L.S.C.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114; Department of Medicine (S.L.C.), Division of Preventive and Behavioral Medicine, University of Massachusetts Medical School, Worcester, Massachusetts 01655; Division of Sleep Medicine (D.P.W.), Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115; Sleep Division, Department of Neurology (M.T.B.), and Reproductive Endocrine Unit, Department of Medicine (J.E.H.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114; and National Institute of Environmental Health Sciences (J.E.H.), National Institutes of Health, Research Triangle Park, North Carolina 27709.

Abstract

CONTEXT:

Women are at increased risk for mood disturbance during the menopause transition. Hot flashes (HFs), sleep disruption, and fluctuating estradiol levels correlate with menopause-associated depression but co-occur, making cause and effect relationships difficult to disentangle.

OBJECTIVE:

Using a GnRH agonist (GnRHa) experimental model, we investigated whether depressive symptoms are associated with HFs and/or are explained by concomitant sleep fragmentation in the absence of estradiol fluctuation.

DESIGN AND INTERVENTION:

Depressive symptoms, objective polysomnographic sleep parameters, subjective sleep quality, serum estradiol, and HFs were assessed before and 4 weeks after open-label depot GnRHa (leuprolide 3.75-mg) administration.

SETTING:

Academic medical center.

PARTICIPANTS:

Twenty-nine healthy nondepressed premenopausal volunteers (mean age, 27.3 years).

RESULTS:

Serum estradiol was rapidly and uniformly suppressed. HFs developed in 69% of the subjects. On univariate analysis, worsening of mood was predicted by increases in time in light sleep (stage N1), number of transitions to wake, non-REM arousals, subjective sleep quality, and reductions in perceived sleep efficiency (all P < .045), as well as the number of nighttime (P = .006), but not daytime (P = .28), HFs reported. In adjusted models, the number of nighttime HFs reported, increases in non-REM arousals, time in stage N1, transitions to wake, and reduced sleep quality remained significant predictors of mood deterioration (P ≤ .05).

CONCLUSIONS:

Depressive symptoms emerged after estradiol withdrawal in association with objectively and subjectively measured sleep disturbance and the number of nighttime, but not daytime, HFs reported. Results suggest that sleep disruption and perceived nighttime HFs both contribute to vulnerability to menopause-associated depressive symptoms in hypoestrogenic women.

TRIAL REGISTRATION:

ClinicalTrials.gov NCT01116401.

PMID:
27680875
PMCID:
PMC5052351
DOI:
10.1210/jc.2016-2348
[Indexed for MEDLINE]
Free PMC Article

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