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Effects of the Concentrated Extract of Soy on Coagulation Factors After Menopause

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ClinicalTrials.gov Identifier: NCT00925639
Recruitment Status : Unknown
Verified June 2009 by Federal University of São Paulo.
Recruitment status was:  Not yet recruiting
First Posted : June 22, 2009
Last Update Posted : June 22, 2009
Information provided by:

Study Description
Brief Summary:
Hypoestrogenism, common in menopause, is responsible for systemic and metabolic changes affecting women's wellness, favoring hot flashes, urogenital atrophy and bone mass loss. Hormone reposition therapy (HRT) with estrogen or estrogen associated to progesterone is administered to minimize these effects. Meanwhile, the beneficial effects of HRT are known, there is still concern about its adverse effects such as thromboembolic and cardiovascular effects, increased risk of breast and endometrial cancer. Thus, there is an increasing interest in the development of phytohormonal HRT. The aim of the investigators' study is to evaluate the effects of concentrated extract of soy on hypercoagulation markers in menopausal women.

Condition or disease Intervention/treatment Phase
Menopause Drug: Isoflavone Drug: Placebo Phase 3

Study Design

Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 84 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Treatment
Official Title: Effects of the Concentrated Extract of Soy on Coagulation Factors After Menopause
Study Start Date : August 2009
Estimated Primary Completion Date : January 2010
Estimated Study Completion Date : August 2010

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Menopause
U.S. FDA Resources

Arms and Interventions

Arm Intervention/treatment
Experimental: Isoflavone
Patients will receive daily doses of 150 mg of concentrated extract of soy per os
Drug: Isoflavone
150 mg of concentrated extract of soy containing 60 mg of isoflavone comprising 40 mg of genistein, 14,55 mg of daidizein, 3,02 mg of daidzine, 1,14 mg of glicitine, 0,91 mg genistine and 0,38 mg of glicetein.
Placebo Comparator: Control
Patients will receive daily placebo pills
Drug: Placebo
Starch pill

Outcome Measures

Primary Outcome Measures :
  1. Concentration of serum DDimer [ Time Frame: 3 months ]

Eligibility Criteria

Information from the National Library of Medicine

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Ages Eligible for Study:   45 Years to 65 Years   (Adult)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • > 1 year of amenorrhea
  • 45 to 65 years old
  • without hormone reposition treatment or herbal medications in the 6 months preceding the research

Exclusion Criteria:

  • history of thromboembolism
  • history of cardiovascular disease
  • presence of estrogen dependent neoplasia
  • presence of abnormal genital bleeding
  • uncontrolled metabolic diseases
  • smoking or drinking habits
  • use of anticoagulants or acetyl salicylic acid
Contacts and Locations

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00925639

Contact: Regiane HB Rabelo, MD 5511-72307128 gianehelena@ig.com.br
Contact: Teresa R Embiruçu, MD 5511-74513521 embirucu2@yahoo.com.br

Ambulatório de Ginecologia Endócrina Recruiting
São Paulo, Brazil, 04039-060
Contact: Maria Cecília Santos, Nurse    5511-55496174    mc.santos@hotmail.com   
Principal Investigator: Regiane HB Rabelo, M.D.         
Sponsors and Collaborators
Federal University of São Paulo
Study Chair: Mauro A Aidar, M.D., PhD. Universidade Federal de São Paulo
More Information

Additional Information:
Responsible Party: Regiane Helena Barros Rabelo, Departamento de Ginecologia da Universidade Federal de São Paulo
ClinicalTrials.gov Identifier: NCT00925639     History of Changes
Other Study ID Numbers: CEP/UNIFESP 0728/08
First Posted: June 22, 2009    Key Record Dates
Last Update Posted: June 22, 2009
Last Verified: June 2009

Keywords provided by Federal University of São Paulo: