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Effects of Hormone Replacement Therapy on the Serotonergic System and Mood in Postmenopausal Women

This study has been completed.
Information provided by:
Medical University of Vienna Identifier:
First received: September 18, 2008
Last updated: July 20, 2011
Last verified: July 2010
Menopausal and postmenopausal women compose almost 20% of the Austrian population. Two thirds of all austrian women suffering from depression or anxiety disorders are over 45 years old. The serotonergic system, partially regulated by the steroid hormones estrogen and progesterone, plays a major role in the pathogenesis and treatment of these illnesses. To examine the effect of the hormone replacement therapy on the serotonergic system, twenty-four postmenopausal women will be measured using positron emission tomography (PET). The volunteers will participate in two PET scans. The first PET scan will be performed right before the hormone treatment starts, the second PET scan about 8 weeks after daily treatment with (1) a combination of estrogen and progesterone or (2) estrogen and placebo. This imaging study hypothesizes that the expression of the main inhibiting serotonergic receptor (the serotonin-1A receptor) will be altered by the hormone therapy. The results of the study might lead to new strategies in the treatment of psychiatric illnesses during and after the menopausal transition.

Condition Intervention Phase
Hormone Replacement Drug: estradiol valerate Drug: micronized progesterone Drug: placebo Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Triple (Participant, Care Provider, Investigator)
Primary Purpose: Basic Science
Official Title: The Influence of Hormone Replacement Therapy on the Cerebral Serotonin-1A Receptor Distribution and Mood in Postmenopausal Women

Resource links provided by NLM:

Further study details as provided by Medical University of Vienna:

Primary Outcome Measures:
  • Serotonin-1A receptor binding potential [ Time Frame: 24 months ]

Enrollment: 30
Study Start Date: May 2009
Study Completion Date: July 2011
Primary Completion Date: July 2011 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: 1 Drug: estradiol valerate
Progynova® 21; 2mg/d
Drug: micronized progesterone
Utrogestan®; 200mg/d
Experimental: 2 Drug: estradiol valerate
Progynova® 21; 2mg/d
Placebo Comparator: 3
Drug: placebo


Ages Eligible for Study:   50 Years to 65 Years   (Adult)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   Yes

Inclusion Criteria

  • Postmenopausal females (over 14 months of amenorrhoea)
  • Age 50 - 65 years
  • Signed informed consent form
  • Consent not to participate in PET or SPECT studies with an added equivalence dose of over 15 mSv within 10 years following the final assessment of the participant in this study

Exclusion criteria

  • Steroid hormone treatment within 6 months prior to the inclusion
  • Current substance abuse
  • History of any malign illness
  • Any implant or stainless steel graft
  • Concomitant neurological illness
  • Concomitant psychiatric disorder except anxiety disorders or depression
  • Treatment with a psychotropic agent targeting serotonin-1A and serotonin-2A receptors or the serotonin transporter such as buspirone, pindolol or SSRIs
  • Clinically relevant abnormalities in the general physical examination and the routine laboratory screening
  • Concomitant major illness, especially: liver disease, disorders of the endocrine system, osteoporosis (when treated with vitamine D), any clinically relevant vascular or heart diseases
  • One of the following gynaecological diseases: ovariectomy, hysterectomy, endometriosis, cervical smear test: PAP > II
  • Failures to comply with the study protocol or to follow the instructions of the investigating team
  • Investigations using PET or SPECT within 10 years prior to the inclusion
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Please refer to this study by its identifier: NCT00755963

Medical University of Vienna, Dept. of Psychiatry and Psychotherapy
Vienna, Austria, 1090
Sponsors and Collaborators
Medical University of Vienna
Principal Investigator: Siegfried Kasper, MD Medical University of Vienna, Dept. of Psychiatry and Psychotherapy
  More Information

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: ao. Univ.-Prof. Dr. DDr.h.c. Siegfried Kasper, Department of Psychiatry and Psychotherapy, Medical University of Vienna Identifier: NCT00755963     History of Changes
Other Study ID Numbers: PM-20070724
EudraCT: 2007-005685-12
EC 593/2007
Study First Received: September 18, 2008
Last Updated: July 20, 2011

Additional relevant MeSH terms:
Polyestradiol phosphate
Estradiol valerate
Estradiol 3-benzoate
Estradiol 17 beta-cypionate
Hormones, Hormone Substitutes, and Hormone Antagonists
Physiological Effects of Drugs
Contraceptive Agents
Reproductive Control Agents
Contraceptive Agents, Female processed this record on September 20, 2017