- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03014791
Influence of Age, Weight and Ethnic Background on Blood Pressure (AWE)
Influence of Age, Weight and Ethnic Background on Blood Pressure: AWE Study
Hypertension, also known as high blood pressure, is a chronic medical condition, in which the blood pressure is elevated. This is a common condition, which can lead to severe complications such as cardiovascular disease, heart attack, stroke and kidney disease, if not detected and treated early.
Accumulating evidence suggests that the incidence of hypertension varies according to age, ethnicity and obesity. In order to obtain an in-depth knowledge of the pathophysiological mechanisms of hypertension, we aim to investigate the haemodynamic and biochemical correlates of elevated blood pressure across the adult age-span, and determine the extent to which body size and ethnicity impact on these associations. We also wish to investigate the impact of hypertension on key target organs (end-organ damage). The primary objective of this study is to compare the mechanisms regulating blood pressure in hypertensive and non-hypertensive participants across the adult age span, and to assess the influence of body mass index and ethnic background on these mechanisms. Secondary objectives are to investigate the association between blood pressure and cardiovascular physiology across the adult age span at rest and during sub-maximal exercise and to investigate the impact of blood pressure haemodynamics on key organs including the arteries and heart by assessing end-organ damage such as endothelial function, arterial structure and left ventricular mass/function.
This study will be a combined case-control and cross-sectional study describing the procedures and time commitment required to investigate our scientific aims. This is a single centre study that will be conducted in a secondary care environment. Both male and females aged 18 and over and that are able provide informed consent will be considered for this study. People who are pregnant, currently receiving dialysis, illness with a life expectancy <1 year, current active malignancy and cannot provide informed consent are ineligible for this study. The study will be open for five years and each patient will complete a maximum of four visits in a 12 month period. Participants will complete a variety of non-invasive physiological assessments of their cardiovascular system and lung function. There will be some minimally invasive procedures completed, including a blood test and assessment of small artery endothelial function which involves insertion of a small needle under local anesthetic.
Study Overview
Status
Conditions
Intervention / Treatment
- Other: Brief lifestyle/medical history questionnaire
- Other: Anthropometric measures
- Other: Blood pressure and arterial stiffness
- Other: Cardiac output and lung function
- Other: Heart rate variability
- Other: Blood sample & spot urine sample
- Other: 24 hour ambulatory blood pressure monitor
- Other: 24 hour urine collection
- Other: Echocardiograph: Left ventricular mass
- Other: Large artery structure: Carotid intima-media thickness
- Other: Small artery structure: Minimum forearm vascular resistance
- Other: Large artery endothelial function
- Other: Small artery endothelial function: Forearm blood flow
- Other: Dundee step test
- Other: Detailed haemodynamic response to submaximal exercise
- Other: Cardiopulmonary fitness: Maximum oxygen consumption
- Other: Haemodynamic response to mental stress
- Other: Small artery dilatory function: Forearm blood flow
Study Type
Enrollment (Anticipated)
Contacts and Locations
Study Contact
- Name: Natalie Byrne
- Phone Number: 01223 349762
- Email: natalie.byrne@addenbrookes.nhs.uk
Study Contact Backup
- Name: Carmel McEniery, PhD
- Phone Number: 01223 217564
- Email: cmm41@medschl.cam.ac.uk
Study Locations
-
-
Cambridgeshire
-
Cambridge, Cambridgeshire, United Kingdom, CB2 0QQ
- Recruiting
- Vascular Research Clinic, Addenbrooke's Hospital
-
Contact:
- Carmel McEniery, PhD
- Email: cmm41@medschl.cam.ac.uk
-
Principal Investigator:
- Carmel McEniery, MPhD
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Male or Female, aged 18 or above
- Able to give informed consent and willing to participate
Exclusion Criteria:
- Pregnancy
- Current active malignancy
- Currently receiving dialysis
- Any illness with a life expectancy < 1 year
- Lack of written informed consent
Study Plan
How is the study designed?
Design Details
- Observational Models: Case-Control
- Time Perspectives: Cross-Sectional
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
Healthy Volunteers
No IMP to be administered, only challenge agents as part of the physiological assessments. Large artery endothelial function:
Forearm blood flow
|
Core Measurement
Core Measurement
Core Measurement
Core Measurement
Core Measurement
Core Measurement
Detailed Measurement (Optional for participants).
Detailed Measurement (Optional for participants).
Detailed Measurement (Optional for participants).
Detailed Measurement (Optional for participants).
Detailed Measurement (Optional for participants).
Flow- and salbutamol-mediated vasodilatation Detailed Measurement (Optional for participants).
Detailed Measurement (Optional for participants).
Systolic blood pressure response to submaximal exercise Detailed Measurement (Optional for participants).
Detailed Measurement (Optional for participants).
Detailed Measurement (Optional for participants).
Detailed Measurement (Optional for participants).
Detailed Measurement (Optional for participants).
|
Hypertensive Patients (Case-control)
No IMP to be administered, only challenge agents as part of the physiological assessments. Large artery endothelial function:
Forearm blood flow
|
Core Measurement
Core Measurement
Core Measurement
Core Measurement
Core Measurement
Core Measurement
Detailed Measurement (Optional for participants).
Detailed Measurement (Optional for participants).
Detailed Measurement (Optional for participants).
Detailed Measurement (Optional for participants).
Detailed Measurement (Optional for participants).
Flow- and salbutamol-mediated vasodilatation Detailed Measurement (Optional for participants).
Detailed Measurement (Optional for participants).
Systolic blood pressure response to submaximal exercise Detailed Measurement (Optional for participants).
Detailed Measurement (Optional for participants).
Detailed Measurement (Optional for participants).
Detailed Measurement (Optional for participants).
Detailed Measurement (Optional for participants).
|
Hypertensive Patients (Cross-sectional)
No IMP to be administered, only challenge agents as part of the physiological assessments. Large artery endothelial function: Same challenge agents as healthy volunteer and hypertensive patient (Case-control) arms Forearm blood flow Same challenge agents as healthy volunteer and hypertensive patient (Case-control) arms Recruited from community-based cohort studies - CLEAREST and ACCT Equal recruitment across the following parameters:
|
Core Measurement
Core Measurement
Core Measurement
Core Measurement
Core Measurement
Core Measurement
Detailed Measurement (Optional for participants).
Detailed Measurement (Optional for participants).
Detailed Measurement (Optional for participants).
Detailed Measurement (Optional for participants).
Detailed Measurement (Optional for participants).
Flow- and salbutamol-mediated vasodilatation Detailed Measurement (Optional for participants).
Detailed Measurement (Optional for participants).
Systolic blood pressure response to submaximal exercise Detailed Measurement (Optional for participants).
Detailed Measurement (Optional for participants).
Detailed Measurement (Optional for participants).
Detailed Measurement (Optional for participants).
Detailed Measurement (Optional for participants).
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Cardiac Output (Measured by the inert gas re-breathing technique L/Min)
Time Frame: 5 years
|
5 years
|
Peripheral vascular resistance (Calculated using Cardiac Output and Blood pressure data dynes/sec/cm^5 )
Time Frame: 5 years
|
5 years
|
Pulse wave velocity (Measured by ECG-gated applanation tonometry meters/sec)
Time Frame: 5 years
|
5 years
|
Collaborators and Investigators
Collaborators
Investigators
- Principal Investigator: Carmel McEniery, PhD, University of Cambridge
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- AWE
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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