Ignite Creation Date:
2025-12-24 @ 11:45 PM
Ignite Modification Date:
2026-03-11 @ 9:28 AM
Study NCT ID:
NCT02840851
Status:
COMPLETED
Last Update Posted:
2019-12-09
First Post:
2016-07-19
Is Gene Therapy:
True
Has Adverse Events:
False
Brief Title:
Brain Blood Flow: Age and Gender
Sponsor:
University of Wisconsin, Madison
Organization:
Study Overview
Official Title:
Brain Blood Flow Response to Hypercapnia in Healthy Adults: The Effect of Age and Sex
Status:
COMPLETED
Status Verified Date:
2019-12
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
Baseline cerebral blood flow through the middle cerebral artery (MCA) and cerebral vasodilator response of the MCA to inhaled carbon dioxide (CO2) will be measured in young women, young men, older women, and older men using Magnetic Resonance (MR) imaging and transcranial Doppler ultrasound (TCD). Data collection techniques will be compared.
Detailed Description:
The investigators have recently shown that cerebral blood flow responses to chemical stimuli are reduced in healthy older adults. The investigators also have preliminary data suggesting that sex differences in cerebrovascular regulation exist. The overall goal of this application is to extend on the investigators previous studies by employing advanced neuroimaging techniques to enhance the investigators understanding of neurovascular coupling in healthy aging. This study will collect clinically significant data with implications for the future risk of cognitive decline and Alzheimer's disease.
The research aims are:
1. To determine the effect of age and sex on baseline cerebral blood flow through the middle cerebral artery (MCA).
2. To determine the effect of age and sex on cerebral vasodilator responses.
3. To determine if the cerebrovascular responses measured by transcranial Doppler ultrasound (TCD) are associated with the cerebrovascular responses measured by Magnetic Resonance (MR) imaging.
The research aims are:
1. To determine the effect of age and sex on baseline cerebral blood flow through the middle cerebral artery (MCA).
2. To determine the effect of age and sex on cerebral vasodilator responses.
3. To determine if the cerebrovascular responses measured by transcranial Doppler ultrasound (TCD) are associated with the cerebrovascular responses measured by Magnetic Resonance (MR) imaging.
Study Oversight
Has Oversight DMC:
False
Is a FDA Regulated Drug?:
None
Is a FDA Regulated Device?:
None
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?: