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PrehypertensionRice-vinegarNCT03596099

Rice Vinegar as an Intervention to Lower Blood Pressure in Adults With Prehypertension and 10-year CVD Risk <10%

A study testing Mizkan rice vinegar with acetic acid and Mizkan rice vinegar without acetic acid in people with Prehypertension, run by Mizkan Holdings Co., Ltd. at 2 sites in United States.

Unknown status

Status not confirmed. The sponsor has not verified this record for over two years, so it may be out of date.

Official record
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Trial summary

This study is to assess the blood pressure lowering effect of rice vinegar when consumed over a 12-week period by healthy adults ages 30-65 years old with prehypertension. Study subjects will be recruited online via ClaimIt software platform and randomized to receive either the active rice vinegar-based drink or… Read more about this study

Who is it for?
Ages 30 to 65 years
Conditions the study is for
Prehypertension
What is being tested?
Mizkan rice vinegar with acetic acid and Mizkan rice vinegar without acetic acid
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
130 participants
Where
2 sitesUnited States
Study dates
11 Sep 2018to 1 Oct 2019
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 30 to 65 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Prehypertension (SBP 120-139mmHg and /or DBP 80-89mmHg)
  • Males and females
  • Must be between 30-65 years of age
  • BMI: ≥18.5 kg/m2 and ≤34.9 kg/m2
  • Stable body weight [self-reported weight gain or loss <5kg (11 lbs) in the past 3 months]
  • Agree to comply with the study procedures
  • Able to understand and sign the electronic informed consent
  • Has reliable access to the internet and smartphone, and the necessary skills required to complete study tasks

Who cannot join

  • SBP ≥140mmHg or SBP <120mmHg
  • Use of tobacco, illegal drugs, or legal drugs known to impact blood pressure (BP), including but not limited to: amphetamine-type stimulants, cannabis, cocaine, heroin and other opioids, and MDMA
  • Significant alcohol consumption (women: >3 drinks a day or >7 drinks a week; men: >4 drinks per day or >14 drinks per week)
  • Women who are pregnant or nursing, and those planning to become pregnant
  • Frequent heartburn, e.g., ≥2 days or more per week
  • Use of anti-hypertensives, anti-depressants, immunosuppressants, drugs for hyperlipidemia, drugs that alter nutrient metabolism, and/or supplements targeting blood pressure reduction, and/or sustained use of NSAIDs within 30 days before randomization
Show all 16Show fewer
  • Regular use of polyphenol supplements and unwilling to stop use at the time of screening and for the duration of the study
  • Self-identified as "high" consumer of vinegar-containing foods (e.g., 2 days or more per week consumption of a vinegar drink or significant volumes from such categories as salad dressings, pickled foods, etc.)
  • History of chronic medical conditions, including but not limited to Type 1 or 2 diabetes, cardiovascular disease (including previous heart attack or stroke), kidney dysfunction (including chronic kidney disease), cancer
  • An ASCVD 10-year risk score of ≥10% based on the ACC/AHA ASCVD calculator as performed by the Investigator or designee via the ASCVD Risk Estimator website (http://tools.acc.org//ASCVD-Risk-Estimator-Plus/#!/calculate/estimate/)
  • Participation in a clinical research trial within 30 days prior to signing the eIC during screening
  • Clinically significant findings from the laboratory assessments obtained during screening, as assessed by the Investigator or designee
  • Allergy to any component of the vinegar or placebo products
  • Unable to understand the study and undergo the informed consent process despite assistance
  • Having more than one individual from a household participate in the study (to ensure prevention of mistaken consumption of incorrect investigational product)
  • Investigator's discretion, e.g., subject deemed unsuitable or unreliable in follow-up to interaction with Investigator or site staff

Trial locations and contacts

2 sites in 1 country.

United States2 sites
  • Primary Care Research Group

    Atlanta, Georgia, 30312

  • Endothelix Research Site c/o Bellaire Cardiology Associates

    Bellaire, Texas, 77401

Other trials in United States

About this study

This study is to assess the blood pressure lowering effect of rice vinegar when consumed over a 12-week period by healthy adults ages 30-65 years old with prehypertension. Study subjects will be recruited online via ClaimIt software platform and randomized to receive either the active rice vinegar-based drink or placebo and will visit the Endothelix research study site in Houston, Texas, 6 times during the study (Week -2, 0, 4, 8, 12 and 16). Here, subjects will undergo blood pressure monitoring, endothelial function, and laboratory assessments.

Read the detailed description

Approximately 75 million American adults have hypertension with nearly one in every three adults experiencing a condition known as prehypertension (1). In 2013, more than 360,000 American deaths involved high blood pressure as a primary or co-morbid cause (2). In hypertensive patients, the probability of a first occurrence of heart attack and/or stroke is 70% and 80%, respectively (2). Dietary and lifestyle modifications may help some individuals maintain BP within normal ranges.

Studies of acetic acid, main component of vinegar, conducted with rat and human revealed mechanisms of potential blood pressure lowering (3-7). Also several human clinical trials to assess the efficacy of vinegar on blood pressure have previously been conducted in Japan. Kajimoto et al (2001, 2003) reported that continuous intake of 750 mg of acetic acid daily (approximately 15 mL of vinegar) reduces systolic blood pressure of adults with prehypertension as well as adults with hypertension (8-9). Sadou et al (2006) also reported similar effects with tomato vinegar in adults with prehypertension (750 mg daily acetic acid intake)(10).

The Seventh Report of the Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure (JNC7) published by U.S. Department of Health and Human Services in 2003 defines prehypertension as blood pressure ranging from 120-139 mmHg systolic and 80-89 mmHg diastolic (11). JNC7 states that "prehypertension is not a disease category". Individuals with prehypertension are not candidates for drug therapy, rather they are recommended to practice lifestyle modification to reduce the risk of developing hypertension in the future. The Centers for Disease Control (CDC) shows the same position to JNC7 that a person who have SBP (120-139 mmHg) or DBP (80-89 mmHg) are prehypertension at risk stage (https://www.cdc.gov/bloodpressure/measure.htm). U S Food and Drug Administration (FDA) shows similar position in 21 C.F.R. § 101.74(a)(1) that "Hypertension, or high blood pressure, generally means a systolic blood pressure of greater than 140 millimeters of mercury (mm Hg) or a diastolic blood pressure of greater than 90 mm Hg. Normotension, or normal blood pressure, is a systolic blood pressure below 140 mm Hg and diastolic blood pressure below 90 mm Hg.". Recently issued guidance by the American College of Cardiology, the American Heart Association, and other collaborators (ACC/AHA) has emphasized the importance of 10-year CVD risk in categorization of blood pressure, which is calculated using an individual's systolic and diastolic blood pressure values, blood cholesterol levels, and medical history (12). The recommended treatment for an individual with a 10-year CVD risk <10% and blood pressure ≤139 mmHg systolic and ≤89 mmHg diastolic is lifestyle modification and not pharmacologic intervention. The target population for this study is not hypertension as defined by FDA and will align with the blood pressure category of "prehypertension" as defined by JNC7, recognized by CDC, and an additional inclusion criterion of a 10-year CVD risk <10% in recognition of the 2017 ACC/AHA report.

Its potential effects on blood pressure of acetic acid in humans with prehypertension (all clinical trials in Japan) provide a rationale for this evaluation with a Mizkan rice vinegar fruit drink containing 750 mg acetic acid. The purpose of this trial is to investigate the effect of vinegar delivering 750 mg acetic acid on blood pressure over a 12-week period in individuals with prehypertension and a <10% 10-year CVD risk. Additionally, the impact of 750 mg acetic acid as delivered in the vinegar drink on blood markers of the renin-angiotensin-aldosterone system and a marker of endothelial function will be assessed after 12-weeks.

Conditions
Prehypertension
Being tested
Mizkan rice vinegar with acetic acid, Mizkan rice vinegar without acetic acid
Keywords
Prehypertension, Rice vinegar, vinegar, acetic acid
Medical subject headings
Prehypertension

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Mizkan rice vinegar with acetic acidDietary supplement

    200mL serving of a fruit-flavored beverage containing diluted Mizkan rice vinegar and 750mg acetic acid.

  • Mizkan rice vinegar without acetic acidDietary supplement

    200mL serving of a fruit-flavored beverage containing diluted Mizkan rice vinegar that has undergone a freeze-drying process to remove the acetic acid

Study groups in NCT03596099
Study groupRoleWhat they receive
Mizkan rice vinegar with acetic acidExperimental200mL serving of a fruit-flavored beverage containing diluted Mizkan rice vinegar and 750mg acetic acid.
Receives: Dietary Supplement: Mizkan rice vinegar with acetic acid
Mizkan rice vinegar without acetic acidPlacebo comparator200mL serving of a fruit-flavored beverage containing diluted Mizkan rice vinegar that has undergone a freeze-drying process to remove the acetic acid
Receives: Dietary Supplement: Mizkan rice vinegar without acetic acid

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change in Systolic Blood Pressure

    To compare the change from baseline in systolic blood pressure at Weeks 4, 8, 12 (end of treatment), and 16 (end of study), in subjects with prehypertension who consume Mizkan rice vinegar active product (acetic acid) daily or placebo (no acetic acid) over a period of 12 weeks.

    Measured: Weeks 4, 8, 12, and 16

Secondary outcomes (3)
  1. Changes in Diastolic Blood Pressure

    To compare change from the baseline versus Weeks 4, 8, 12, and 16 in diastolic blood pressure in subjects with prehypertension who consume Mizkan rice vinegar active product (acetic acid) daily or placebo (no acetic acid) over a period of 12 weeks.

    Measured: Weeks 4, 8, 12, and 16

  2. Changes in Corresponding Blood Biomarkers

    To compare the changes from baseline versus Week 12 in corresponding blood biomarkers (angiotensin II, aldosterone, renin activity, and ACE activity) in subjects with prehypertension who consume Mizkan rice vinegar active product (acetic acid) daily or placebo (no acetic acid) over a period of 12 weeks.

    Measured: Week 12

  3. Changes in Vascular Reactivity via VENDYS®

    To compare changes from the baseline versus Weeks 4, 8, 12, and 16 in vascular reactivity to assess the endothelial function via VENDYS® measurements in subjects with prehypertension who consume Mizkan rice vinegar active product (acetic acid) daily or placebo (no acetic acid) over a period of 12 weeks.

    Measured: Weeks 4, 8, 12, and 16

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted23 Jul 2018
  2. Study start11 Sep 2018
  3. Primary completion31 Jul 2019 (estimated)
  4. Study completion1 Oct 2019 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Parallel groups
Model description
Randomized, two-arm, parallel-group, double-blind, placebo-controlled
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
130 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03596099
Sponsor's protocol ID
OBVIO_MIZ_001
Acronym
Rice-vinegar
Status last verified
Jul 2019
First submitted
6 Jul 2018
Last updated
30 Jul 2019
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Merai R, Siegel C, Rakotz M, Basch P, Wright J, Wong B; DHSc; Thorpe P. CDC Grand Rounds: A Public Health Approach to Detect and Control Hypertension. MMWR Morb Mortal Wkly Rep. 2016 Nov 18;65(45):1261-1264. doi: 10.15585/mmwr.mm6545a3.

    PubMed 27855138
  • Mozaffarian D, Benjamin EJ, Go AS, Arnett DK, Blaha MJ, Cushman M, de Ferranti S, Despres JP, Fullerton HJ, Howard VJ, Huffman MD, Judd SE, Kissela BM, Lackland DT, Lichtman JH, Lisabeth LD, Liu S, Mackey RH, Matchar DB, McGuire DK, Mohler ER 3rd, Moy CS, Muntner P, Mussolino ME, Nasir K, Neumar RW, Nichol G, Palaniappan L, Pandey DK, Reeves MJ, Rodriguez CJ, Sorlie PD, Stein J, Towfighi A, Turan TN, Virani SS, Willey JZ, Woo D, Yeh RW, Turner MB; American Heart Association Statistics Committee and Stroke Statistics Subcommittee. Heart disease and stroke statistics--2015 update: a report from the American Heart Association. Circulation. 2015 Jan 27;131(4):e29-322. doi: 10.1161/CIR.0000000000000152. Epub 2014 Dec 17. No abstract available.

    PubMed 25520374
  • Sakakibara S, Murakami R, Takahashi M, Fushimi T, Murohara T, Kishi M, Kajimoto Y, Kitakaze M, Kaga T. Vinegar intake enhances flow-mediated vasodilatation via upregulation of endothelial nitric oxide synthase activity. Biosci Biotechnol Biochem. 2010;74(5):1055-61. doi: 10.1271/bbb.90953. Epub 2010 May 7.

    PubMed 20460711
  • Na L, Chu X, Jiang S, Li C, Li G, He Y, Liu Y, Li Y, Sun C. Vinegar decreases blood pressure by down-regulating AT1R expression via the AMPK/PGC-1alpha/PPARgamma pathway in spontaneously hypertensive rats. Eur J Nutr. 2016 Apr;55(3):1245-53. doi: 10.1007/s00394-015-0937-7. Epub 2015 Oct 18.

    PubMed 26476634
  • Mitrou P, Petsiou E, Papakonstantinou E, Maratou E, Lambadiari V, Dimitriadis P, Spanoudi F, Raptis SA, Dimitriadis G. Vinegar Consumption Increases Insulin-Stimulated Glucose Uptake by the Forearm Muscle in Humans with Type 2 Diabetes. J Diabetes Res. 2015;2015:175204. doi: 10.1155/2015/175204. Epub 2015 May 6.

    PubMed 26064976
  • Honsho S, Sugiyama A, Takahara A, Satoh Y, Nakamura Y, Hashimoto K. A red wine vinegar beverage can inhibit the renin-angiotensin system: experimental evidence in vivo. Biol Pharm Bull. 2005 Jul;28(7):1208-10. doi: 10.1248/bpb.28.1208.

    PubMed 15997099
  • Kondo S, Tayama K, Tsukamoto Y, Ikeda K, Yamori Y. Antihypertensive effects of acetic acid and vinegar on spontaneously hypertensive rats. Biosci Biotechnol Biochem. 2001 Dec;65(12):2690-4. doi: 10.1271/bbb.65.2690.

    PubMed 11826965
  • (8) Kajimoto, O., et al. (2001). Effects of a drink containing vinegar on blood pressure in mildly and moderately hypertensive subjects. J Nutr Food, 2001, 4, 1-14

  • (9) Kajimoto, O., Tayama, K., Hirata, H., Nishimura, A., Tsukamoto, Y. (2003). Hypotensive effects of drinks containing vinegar on high normal blood pressure and milk hypertensive subjects. J Nutr Food, 6(1), 51-68

  • (10) Sadou et al. (2006). Antihypertensive Effect and Safety of a Drink ContainingTomato Vinegar in Case of Long-term Intake for Subjects with High-normal Blood Pressure or Mild Hypertension. Jpn Pharmacol Ther, 34, 6

  • Chobanian AV, Bakris GL, Black HR, Cushman WC, Green LA, Izzo JL Jr, Jones DW, Materson BJ, Oparil S, Wright JT Jr, Roccella EJ; National Heart, Lung, and Blood Institute Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure; National High Blood Pressure Education Program Coordinating Committee. The Seventh Report of the Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure: the JNC 7 report. JAMA. 2003 May 21;289(19):2560-72. doi: 10.1001/jama.289.19.2560. Epub 2003 May 14.

    PubMed 12748199
  • Carey RM, Whelton PK; 2017 ACC/AHA Hypertension Guideline Writing Committee. Prevention, Detection, Evaluation, and Management of High Blood Pressure in Adults: Synopsis of the 2017 American College of Cardiology/American Heart Association Hypertension Guideline. Ann Intern Med. 2018 Mar 6;168(5):351-358. doi: 10.7326/M17-3203. Epub 2018 Jan 23.

    PubMed 29357392

Questions about this trial

What is this clinical trial studying?

A study testing Mizkan rice vinegar with acetic acid and Mizkan rice vinegar without acetic acid in people with Prehypertension, run by Mizkan Holdings Co., Ltd. at 2 sites in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 8 inclusion and 16 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: status not confirmed, as of the sponsor's last update on 30 Jul 2019. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 2 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Results are not available in the source record.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change in Systolic Blood Pressure (time frame: Weeks 4, 8, 12, and 16). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03596099, which also lists 12 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 30 Jul 2019.

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