Skip to content

Glu298Asp Polymorphism and Blood Pressure

The Effects of Beetroot Bread on Postprandial Blood Pressure According to Glu298Asp Polymorphism in the eNOS Gene

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02037308
Enrollment
14
Registered
2014-01-15
Start date
2010-06-30
Completion date
2012-12-31
Last updated
2014-01-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hypertension

Keywords

Glu298Asp polymorphism, Blood pressure, Plasma NOx, Beetroot

Brief summary

The Glu298Asp polymorphism has been linked to increased risk of cardiovascular events, proposed to be due to reduced nitric oxide production by eNOS reported in some but not all studies. We hypothesise that beetroot-enriched bread interacts with the Glu298Asp polymorphism of the eNOS gene to lower blood pressure and increase plasma nitrate/nitrite, particularly in carriers of the T allele, which have been associated with lower eNOS activity and increased risk of hypertension.

Interventions

DIETARY_SUPPLEMENTBread

Sponsors

University of Reading
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
BASIC_SCIENCE
Masking
SINGLE (Subject)

Eligibility

Sex/Gender
MALE
Age
18 Years to 64 Years
Healthy volunteers
Yes

Inclusion criteria

* Male * A signed consent form * Age 18-64 years * Body mass index - 18.5-30 kg/m2 * Non-smoking, healthy individuals * Normal blood pressure at screening (\< 150/90)

Exclusion criteria

* Subjects with anaemia * Sufferers of chronic illnesses * Individuals with food allergies * People with diabetes * People with coeliac disease * Women * Vegetarians

Design outcomes

Primary

MeasureTime frame
Postprandial blood pressure30 minute intervals for a period of 6 hours

Secondary

MeasureTime frame
Postprandial plasma NOx30 minute intervals for a total period of 6 hours

Countries

United Kingdom

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026