Equol Supplementation on Blood Pressure and Vascular Function

NCT ID: NCT02515682

Last Updated: 2015-08-05

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

207 participants

Study Classification

INTERVENTIONAL

Study Start Date

2015-10-31

Study Completion Date

2018-12-31

Brief Summary

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We propose to perform a 24-week randomized, double-blind a placebo-controlled trial among 207 non-equol producing postmenopausal women with prehypertension to examine the effectiveness of equol (10mg and 20mg/d) on 24h ambulatory blood pressure, vascular function and other cardiovascular risks (lipid profile, glycemic control and inflammatory biomarkers) and explore the optimal dosage of equol.

Detailed Description

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Inclusion criteria

1. Hong Kong Chinese women aged 45-65 y with 2\~8 years menopausal;
2. Mean SBP above 130 mmHg or DBP above 80 mmHg or both based on an average of 6 BP readings on two different occasions measured by sphygmomanometer.
3. Equol non-producer is defined as 24-hour urinary log10 S-equol:daidzein ratio less than -1.75 after daidzein challenge (60mg daidzein daily for 7 consecutive days).

Exclusion criteria

1. Subjects on anti-hypertensive medication or with average SBP≥160 or DBP≥100 or both;
2. Use of medications known to affect BP within past 6 months;
3. Medical history or presence of certain chronic diseases that could affect BP or limit the individual's ability to participate in the study;
4. Present or history of certain cancers;
5. Regular smoker or alcohol consumption more than 30 g/day;
6. Known soy allergy.

Conditions

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Hypertension

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

TRIPLE

Participants Investigators Outcome Assessors

Study Groups

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High equol

High equol group will be given natural S-equol supplementation 20mg per day for 24 week.

Group Type ACTIVE_COMPARATOR

High equol group

Intervention Type DIETARY_SUPPLEMENT

Participants will be give natural S-equol 20mg/d for 24 weeks.

Low equol

Low equol group will be given natural S-equol supplementation 10mg/d (+10mg starch) for 24 weeks

Group Type ACTIVE_COMPARATOR

Low equol group

Intervention Type DIETARY_SUPPLEMENT

Participants will be give natural S-equol 10mg/d for 24 weeks.

Placebo

Placebo group will be given placebo control (made from starch) 20 mg per day for 24 weeks.

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DIETARY_SUPPLEMENT

Participants will be give placebo for 24 weeks.

Interventions

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High equol group

Participants will be give natural S-equol 20mg/d for 24 weeks.

Intervention Type DIETARY_SUPPLEMENT

Low equol group

Participants will be give natural S-equol 10mg/d for 24 weeks.

Intervention Type DIETARY_SUPPLEMENT

Placebo

Participants will be give placebo for 24 weeks.

Intervention Type DIETARY_SUPPLEMENT

Eligibility Criteria

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Inclusion Criteria

1. Hong Kong Chinese women aged 45-65 y with 2\~8 years menopausal;
2. mean SBP above 130 mmHg or DBP above 80 mmHg or both based on an average of 6 BP readings on two different occasions measured by sphygmomanometer.
3. Equol non-producer is defined as 24-hour urinary log10 S-equol:daidzein ratio less than -1.75 after daidzein challenge (60mg daidzein daily for 7 consecutive days).
4. Written informed consent will be obtained from all the participants prior to enrolment.

Exclusion Criteria

1. Subjects on anti-hypertensive medication or with average SBP≥160 or DBP≥100 or both;
2. use of medications known to affect BP within past 6 months (hormone therapy, hypoglycemic or weight reduction agents);
3. medical history or presence of certain chronic diseases (stroke, cardiac infarction, severe liver and renal disease etc.) that could affect BP or limit the individual's ability to participate in the study;
4. present or history of breast cancer, endometrial cancer, ovarian cancer, thyroid disorder, abnormal uterine bleeding after menopause;
5. regular smoker or alcohol consumption more than 30 g/day;
6. known soy allergy.
Minimum Eligible Age

48 Years

Maximum Eligible Age

65 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

Yes

Sponsors

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Chinese University of Hong Kong

OTHER

Sponsor Role lead

Responsible Party

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Liu Zhaomin

Research Assistant Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

References

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Liu ZM, Ho SC, Chen YM, Xie YJ, Huang ZG, Ling WH. Research protocol: effect of natural S-equol on blood pressure and vascular function--a six-month randomized controlled trial among equol non-producers of postmenopausal women with prehypertension or untreated stage 1 hypertension. BMC Complement Altern Med. 2016 Mar 1;16:89. doi: 10.1186/s12906-016-1065-5.

Reference Type DERIVED
PMID: 26928904 (View on PubMed)

Other Identifiers

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CRE-2013.119-T

Identifier Type: OTHER

Identifier Source: secondary_id

471213

Identifier Type: -

Identifier Source: org_study_id

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