Clinical Trials Logo

Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT03841383
Other study ID # CFRBH4_IT1
Secondary ID
Status Completed
Phase
First received
Last updated
Start date June 6, 2017
Est. completion date July 10, 2019

Study information

Verified date July 2019
Source IRCCS San Raffaele
Contact n/a
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

To determine if there is a relationship between coronary flow reserve (CFR) and platelet/plasma BH2 and BH4 levels in patients with high cardiovascular risk .


Description:

Primary parameter :

relationship between coronary flow reserve (CFR) and platelet/plasma BH2 and BH4 levels in patients with hypertension and concomitant cardiovascular risk factors.

Secondary parameter:

Levels of cGMP in platelets.

4. Study design

Three parallel groups of patients (n=15 per group):

- Group 1 with normal coronary flow reserve (CFR ≥2.5)

- Group 2 with reduced coronary flow reserve (CFR≤2.0)

o Group 3 control subjects (without a high risk profile according to ESC score chart http://www.heartscore.org. ) matched for age (between 40 and 80 years of age)

- and gender. 1/3 enrolled patients must be diabetic (Type2 diabetes)


Recruitment information / eligibility

Status Completed
Enrollment 55
Est. completion date July 10, 2019
Est. primary completion date May 31, 2019
Accepts healthy volunteers
Gender All
Age group 18 Years to 80 Years
Eligibility Inclusion Criteria:

- o men and women (females of childbearing potential must be using highly effective contraceptive precautions such as implants, injectables, combined oral contraceptives, intrauterine devices, sexual abstinence or vasectomised partner)

- Females of childbearing potential or within two years from the menopause must have a negative urine pregnancy test

- between 40 and 80 years of age

- documented history of hypertension

- smokers/non smokers R

- type 2 diabetes R

- Moderate to severe kidney disease (GFR >30 and <60 ml/min/1.73m2 (estimated MDRD) R

- Hypercholesterolemia R

- Receiving an optimal standard antihypertensive treatment for at least 6 months, stable for at least 15 days

- All other concomitant treatments stabilized at least for the preceding 15 days

- Able to give written informed consent

Exclusion Criteria:

- o Females of childbearing potential not using highly effective contraceptive precautions

- Patients with obstructive (>50% diameter reduction) CAD on the LAD (based on invasive angiography or coronary CTA) or with evidence of previous myocardial infarction or history of revascularization in the LAD territory.

- CAD on the RCA or CX with diameter reduction > 50% (based on invasive angiography or coronary CTA) , either native or revascularized (stent)

- Patients with infectious disease and/or chronic inflammatory diseases

- Epicardial coronary arteries spasm

- Patients with severe valve disease and/or significant left ventricular wall motion abnormalities

- Patients under treatment with non-selective beta blockers including propranolol, nadolol, pindolol, labetalol, penbutolol, sotalol, carvedilol, and timolol.

- Contraindications to dipyridamole infusion: asthma, bronchospasm, previous < 24 hours ingestion of phylline derivatives (tea, coffee, cola, xanthines and chocolate) sick sinus syndrome, advanced AV block (second and third degree), systolic blood pressure < 90 mmHg, cerebral ischemia, severe sinus bradycardia (heart rate <40/min), use of dipyridamole during the last 24 h, severe atherosclerotic lesions of extracranial artery >75%.

- Acute treatment or treatment for acute diseases

- Patients receiving steroidal anti-inflammatory drugs, dietary supplements of folic acid, or antioxidant vitamins.

- Any condition that may prevent the pt to give informed consent , enter the study or bias the results.

- Participating into other studies

Study Design


Related Conditions & MeSH terms


Intervention

Diagnostic Test:
Echo stress dipyridamole
Echo stress dipyridamole

Locations

Country Name City State
Italy ASST Papa Giovanni XXIII Bergamo
Italy IRCCS Ospedale San Raffaele Milan

Sponsors (2)

Lead Sponsor Collaborator
IRCCS San Raffaele Servier

Country where clinical trial is conducted

Italy, 

Outcome

Type Measure Description Time frame Safety issue
Primary BH2 and BH4 levels (ng/ml) in plasma and platelets Blood samples will be withdrawn and subsequently analyzed to assess biopterins BH4 and BH2 ng/mL concentration in plasma and platelets Each will be determined separately from the same sample, by high-performance liquid chromatography followed by serial electrochemical and fluorescent detection. 1 week
Primary Coronary Flow Reserve (CFR) Trans Thoracic Doppler Echocardiography Measurement of coronary flow reserve of the left anterior descending coronary artery will be carried out with transthoracic Doppler Echocardiography (TDE) and dipyridamole stress. CFR will be calculated as the ratio between stress and resting flow velocity (cm/sec) 1 week
Primary Relationship between coronary flow reserve (CFR) and platelet/plasma BH2 and BH4 levels. Simple regression analysis or logistic regression will be used to test the relationship between CFR and biopterins values in plasma and platelets. 1 week
Secondary Levels of cGMP in platelets Comparison of levels of cGMP in platelets among normals, patients with normal CFR and patients with reduced CFR 1 week
See also
  Status Clinical Trial Phase
Recruiting NCT05546931 - Mobile Health Program for Rural Hypertension N/A
Completed NCT05086549 - An Observation Study to Evaluate the Renoprotective Effect of Fimasartan in Patients With DKD and Proteinuria
Recruiting NCT05086523 - Cardiac Neuromodulation Therapy (CNT) "Washout" Sub-Study Phase 1/Phase 2
Active, not recruiting NCT03503773 - The TARGET BP OFF-MED Trial Phase 2
Not yet recruiting NCT04082091 - Screening, Early Referral and Lifestyle Tailored E_prescription for Cardiovascular Prevention
Recruiting NCT06019598 - Licorice and Home Blood Pressure, Additional Study N/A
Completed NCT04495231 - Sympathetic Activity and Cardiometabolic Complications
Completed NCT04119999 - A Cardiosleep Research Program on Obstructive Sleep Apnea, Blood Pressure Control and Maladaptive Myocardial Remodeling N/A
Recruiting NCT04505618 - Optical Coherence Tomography Angiography in Subjects With Retinal Vascular Disease N/A
Recruiting NCT04863508 - Wearable Blood Pressure Devices to Identify Masked Uncontrolled Hypertension.
Completed NCT05185297 - Recreational Futsal for Controlled Hypertension N/A
Completed NCT03855605 - Diagnosis of Hypertension by Home Blood Pressure Monitoring
Completed NCT03901183 - Plant-based Nutrition for Patients With Cardiovascular Risk Factors N/A
Recruiting NCT06348576 - Phase III Study to Evaluate the Efficacy and Safety of AD-209 Phase 3
Recruiting NCT03206814 - Improving Hypertension Control in CHina and ARGEntina With a Mobile APP-based Telecare System N/A
Recruiting NCT06343246 - Functional Inspiratory Muscle Training in Patients Diagnosed With Hypertension N/A
Completed NCT06359873 - Left Atrial Enlargement: A Crucial Indicator for Identifying Atrial Fibrillation in Patients With Hypertension
Recruiting NCT04565548 - Hypertension Treatment Adherence Improving Trial N/A
Recruiting NCT06205628 - Safety, Tolerability, PK and PD of ADX-850 in Participants With Hypertension Phase 1
Recruiting NCT04613193 - Blood Pressure Reduction in Patients With Asymptomatic Aortic VALVE Stenosis N/A