Impact of the Central Blood Pressure Level in Cerebral Metabolic Aging: a 18F-FDG PET Study. (PACTEP)

August 23, 2022 updated by: Antoine VERGER, Central Hospital, Nancy, France

Cerebral glycolytic metabolism can be quantified by quantitative analysis of 18F-Fluorodeoxyglucose (18F-FDG) Positron Emission Tomography (PET). This allows to identify neurological diseases at an early stage of functional abnormalities, before any anatomical lesions, and to differentiate them from the "normal" brain aging. Aging mainly leads to atrophy with a decrease in cerebral metabolism in the prefrontal cortex, with consequent deterioration of cognitive processes, in particular executive functions (5).

In a population of 92 "control" subjects, investigators have already quantified the importance of the aging in frontal cortex hypometabolism. These patients were referred for a 18F-FDG PET in the follow-up of lymphoma considered to be in complete remission (PET without cerebral step), without any chemoradiotherapy within 2 months and with normal neuropsychological tests (Mini Mental State Examination, MMSE, Mini International Neuropsychiatric Interview MINI and Frontal Assessment Battery FAB).

However, cerebral aging can be "accelerated" by vascular risk factors, including increased central blood pressure, as investigators have recently reported in a pilot study involving elderly patients. This central pressure, which is directly linked to the cerebral micro-vascularization, can be easily measured by applanation tonometry. In this pilot study, investigators showed that a central pulse pressure equal or greater than 50 mmHg was associated with a significant frontal hypometabolism in elderly patients. This confirmed, at a stage of pre-clinical remodeling, the worse prognostic significance for this criterion, as reported in large epidemiological studies (increased risk of stroke and cardiac vascular events).

However, it is not yet known whether the level of central blood pressure interfere with the brain metabolism of younger subjects, especially with regard to aging observed throughout life. If this hypothesis is confirmed, preventive therapeutic strategies for accelerated aging, could thus integrate the monitoring of central pressure and cerebral metabolism.

The objective of this study is to determine, in a population of control subjects and on a larger scale, the impact of central blood pressure on brain metabolic aging , by using 18F-FDG PET.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
92

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • France
      • Vandoeuvre les Nancy, France, 54511
        • Chru Nancy

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • > 18 years old, with written informed consent,
  • Subjects referred for 18F-FDG PET in a non-oncological setting,
  • Absence of pregnancy or breastfeeding,
  • Lack of chemotherapy in the previous year and no cerebral radiotherapy.
  • No history of psychiatric or neurological pathology.
  • Absence of treatment with psychotropic action, and absence of corticosteroids.

Exclusion Criteria:

  • "abnormal" neuropsychological tests:

    • Mini Mental State Examination (MMSE) <27,
    • Current major depressive episode on the Mini International Neuropsychologic Interview (MINI),
    • Frontal Assessment Battery (FAB) <15.
  • 18F-FDG PET examination showing ischemic, neurodegenerative, neoplastic or other brain lesions (independent of a normal or accelerated aging process).

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Subjects
Subjects referred to a FDG PET scan (standard PET without cerebral step) without any oncologic setting. Patients will be included as following critera: 25% of subjects will have under 40 years old, 25% between 40 and 60 yeard old et 50% higher than 60 years old.
Device: PET with a cerebral step
Positron Emission Tomography with a cerebral step before to carry out the standard Position Emission Tomography
Device: Central blood pressure measurement
Central blood pressure measurement
Other: Neurocognitive tests
Mini Mental State Examination, MMSE, Mini International Neuropsychiatric Interview MINI and Frontal Assessment Batery FAB

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
volume of brain areas detected by quantitative analysis
Time Frame: At inclusion
At inclusion
topography of brain areas detected by quantitative analysis
Time Frame: At inclusion
At inclusion
central blood pressure
Time Frame: At inclusion
At inclusion

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Central Hospital, Nancy, France

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
July 31, 2018

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
November 6, 2020

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
November 6, 2020

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 10, 2017

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 15, 2017

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
November 17, 2017

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
August 24, 2022

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 23, 2022

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
August 1, 2022

More Information

Terms related to this study

Keywords

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • PSS2016/PACTEP-VERGER/VS

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

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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