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Completed

NCT Number: NCT00677599

The FLAVO Trial: Dietary Flavonoids and Cardiovascular Disease Risk Reduction in Postmenopausal Women With Type 2 Diabetes

The purpose of this placebo controlled trial is to determine whether a year long intervention with flavonoids (found in cocoa and soy) is more effective in reducing the risk of cardiovascular disease in postmenopausal women with type 2 diabetes, than standard therapy (statins). A range of markers of cardiovascular disease risk are being studied and volunteers are also providing urine and blood samples. 152 postmenopausal women, from the locality, will be recruited for this study.

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Key information

Age range

Up to 70 year

Sex eligibility

Female

Study type

Interventional

Phase

Not applicable

Primary location

University of East Anglia (UK); School of Medicine, Health Policy and Practice

Norwich, Norfolk, NR47TJ, United Kingdom

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Female
  • Having had a natural menopause and a minimum of 1 year since last menstruation
  • Caucasian
  • under 70 years
  • Type 2 diabetics
  • Those using statins (≥40 mg simvastatin or ≥10 mg atorvastatin) for at least 12 months
  • Not currently taking Hormone Replacement Therapy (HRT) and not having taken HRT for a minimum of 6 months prior to commencement
  • Having no significant past or present medical history of vascular disease, or cancers (specifically breast, uterine or ovarian)
  • Never-smokers, and ex-smokers who have given up smoking at least 12 months before recruitment to the study

Exclusion criteria

  • Currently taking HRT or having taken this medication within 6 months of the trial
  • Those prescribed to use statin therapy for less than 12 months Significant past or present medical history of vascular disease (including ECG and enzyme confirmed myocardial infarction, clinical angina, ischaemic stroke peripheral vascular disease, intermittent claudication) or cancer (especially breast, uterine or ovarian)
  • Hypertensive's with a systolic BP ≥ 160 mm Hg at maximum, or hypertensive's with a systolic BP ≤160 mm Hg at maximum, but who have received antihypertensive therapy for less than 12 months or have had increases to their medication indicating poor control
  • Current smokers or those having given up smoking less than 12 months before recruitment to the study
  • Those prescribed aspirin for a period of less than 12 months prior to recruitment
  • Those prescribed insulin for a period of less than 12 months prior to recruitment and those having had increases to their medication indicating poor control
  • Regular non-prescribed use of anti-inflammatory pain relief medication (i.e. aspirin, paracetamol, cocodamol).
  • Taking other counter indicative medication e.g. steroidal medication during the trial, or within 1 month of the trial beginning.
  • Taking food / dietary supplements e.g. vitamins, minerals, fish oils, plant oils, isoflavones, soy products, carotenoids during the trial (unless prepared to cease intake during, and 1 month preceding the trial).
  • Having vaccinations (excluding the flu vaccination) or antibiotics within 3 months of start of trial, and those with vaccinations scheduled for during the trial
  • Parallel participation in another research project which involves dietary intervention and/or sampling of biological fluids/material
  • Assessed from the clinical screening: HbA1c ≥ 10%; Creatinine >125µmol/L; ALP > 378 IU/L; ALT >150 IU/L; GGT > 180 IU/L

Treatment and study plan

Flavonoid enrichment (cocoa / soy compounds)

Dietary Supplement

Flavonoid compounds from cocoa (including epicatechin) and soy to be consumed for 365days in the experimental intervention (versus placebo consumption). 27g chocolate bar the vehicle for flavonoid enrichment.

Other names: Flavonoid enrichment of compounds found in cocoa and soy versus placebo control

Primary outcomes

  1. Change in cardiovascular disease risk indictaors - including carotid intima-media thickness (CIMT), total plaque volume (TPV) (at the carotid bifurcation), pulse wave velocity (PWV) and biomarkers of risk in blood samples .

    Time frame: 6 months - 1 year

Sponsors and collaborators

Lead sponsor

University of East Anglia

Other

Collaborators

  • Barry Callebaut - chocolate manufacturer contracted to produce intervention foods
  • Clinical Research and Trials Unit (Norfolk & Norwich University Hospital, UK)
  • Diabetes UK
  • Frutarom Netherlands B.V. - Soy producer
  • Quadram Institute Bioscience
  • The Bertram Diabetes Centre & Radiology department (Norfolk & Norwich University Hospital, UK)

Registry information

Official study title

Reducing Cardiovascular Risk With Dietary Flavonoids in Post Menopausal Women With Type 2 Diabetes

Acronym: FLAVO

Important dates

Study start
2008
Primary completion
2010
Study completion
2010
First posted
May 14, 2008
Registry last updated
May 13, 2011

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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