By Robert Preidt
WEDNESDAY, Nov. eight, 2017 (HealthDay News) — A decline within the pumping capacity of an older particular person’s coronary heart can decrease blood stream to their mind’s reminiscence middle, new badysis has discovered.
The research concerned 314 individuals, who averaged 73 years previous and didn’t have coronary heart failure, stroke or dementia. Nearly 40 % of them had gentle cognitive impairment, which will increase the danger for dementia, together with Alzheimer’s illness.
All members underwent checks to find out how a lot blood their coronary heart pumped relative to their physique dimension. They additionally had MRI scans to evaluate blood stream within the mind.
“Our findings show that when the heart does not pump blood as effectively, it may lead to reduced blood flow in the right and left temporal lobes, areas of the brain that process memories,” mentioned research creator Angela Jefferson. She directs Vanderbilt University Medical Center’s Memory & Alzheimer’s Center, in Nashville.
“What is surprising is the reduction we observed is comparable to brain blood flow in someone 15 to 20 years older,” she added.
The findings have been printed on-line Nov. eight within the journal Neurology.
“Our results suggest mechanisms that regulate blood flow may become more vulnerable as a person ages, even before cognitive impairment sets in,” Jefferson mentioned in a journal information launch.
“It is also possible the temporal lobes, where Alzheimer’s disease first begins, may be especially vulnerable due to a less extensive network of sources of blood flow,” she mentioned. “If we can better understand how this process works, we could potentially develop prevention methods or treatments.”