Featured Research

from universities, journals, and other organizations

Decline in daily functioning related to decreased brain activity in Alzheimer's

Date:
August 12, 2014
Source:
Brigham and Women's Hospital
Summary:
Decline in daily functioning associated with Alzheimer's disease is related to alterations in activity in certain regions of the brain, according to a study. Impairment in instrumental activities of daily living -- or an inability to perform high-level daily activities such as calculating finances, remembering appointments and medications, and driving -- is first seen when a person has mild cognitive impairment, which can later progress to dementia due to Alzheimer's disease, experts warn.

Decline in daily functioning associated with Alzheimer's disease is related to alterations in activity in certain regions of the brain, according to a study published in the August 2014 issue of the Journal of Alzheimer's Disease.

Related Articles


Impairment in instrumental activities of daily living -- or an inability to perform high-level daily activities such as calculating finances, remembering appointments and medications, and driving -- is first seen when a person has mild cognitive impairment, which can later progress to dementia due to Alzheimer's disease. Deterioration in the ability to carry out daily activities has been associated with changes in brain activity measured as use of energy (or metabolism of sugar) with a nuclear medicine scan called 18F-Flourodeoxy glucose (FDG) positron emission tomography (PET).

To further investigate the relationship between instrumental activities of daily living and brain activity (FDG metabolism), a team led by researchers from Brigham and Women's Hospital (BWH) analyzed data from the Alzheimer's Disease Neuroimaging Initiative database, a multi-center study that BWH has been a part of for nearly 10 years.

They looked at data from 104 clinically normal elderly participants, 203 participants with mild cognitive impairment, and 95 participants with mild dementia due to Alzheimer's disease. The participants had a baseline PET scan to determine brain activity and underwent clinical assessments every 6 to 12 months for up to three years. The participants' study partners (family members or friends who knew them well) also completed questionnaires about the participants' daily living activities.

The researchers found that decreased activity in frontal areas of the brain, which are responsible for cognitive processing and decision making, and deep temporal and parietal (back) areas of the brain, which are associated with memory, were associated with greater impairment of instrumental activities of daily living initially and over time.

"Impairment in activities of daily living is a major source of burden for Alzheimer's disease patients and caregivers alike," said Gad Marshall, MD, BWH Center for Alzheimer Research and Treatment, assistant professor of Neurology at Harvard Medical School, senior study author. "Therefore, detecting these important deficits early on prior to the dementia stage, along with a better understanding of how they relate to changes in the brain, can lead to more effective design of clinical trials that focus on vital patient-centered outcomes. This in turn will ultimately lead to better treatments prescribed to patients at the early stages of Alzheimer's disease before they are robbed of their faculties and autonomy."

According to the National Institute on Aging, National Institutes of Health, as many as five million people age 65 and older in the United States have dementia due to Alzheimer's disease. As the rapid growth of the aging population continues, the number of those developing the disease is expected to increase significantly, with the number of people with dementia due to Alzheimer's disease doubling for every five-year interval beyond age 65.


Story Source:

The above story is based on materials provided by Brigham and Women's Hospital. Note: Materials may be edited for content and length.


Journal Reference:

  1. Gad Marshall et al. Regional Fluorodeoxyglucose Metabolism and Instrumental Activities of Daily Living across the Alzheimer's Disease Spectrum. Journal of Alzheimer's Disease, August 2014 DOI: 10.3233/JAD-131796

Cite This Page:

Brigham and Women's Hospital. "Decline in daily functioning related to decreased brain activity in Alzheimer's." ScienceDaily. ScienceDaily, 12 August 2014. <www.sciencedaily.com/releases/2014/08/140812163802.htm>.
Brigham and Women's Hospital. (2014, August 12). Decline in daily functioning related to decreased brain activity in Alzheimer's. ScienceDaily. Retrieved October 31, 2014 from www.sciencedaily.com/releases/2014/08/140812163802.htm
Brigham and Women's Hospital. "Decline in daily functioning related to decreased brain activity in Alzheimer's." ScienceDaily. www.sciencedaily.com/releases/2014/08/140812163802.htm (accessed October 31, 2014).

Share This



More Health & Medicine News

Friday, October 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

U.S. Ebola Response Measures Demonstrated

U.S. Ebola Response Measures Demonstrated

AP (Oct. 31, 2014) Officials in the Washington area showed off Ebola response measures being taken at Dulles International Airport and the National Institutes of Health. (Oct. 31) Video provided by AP
Powered by NewsLook.com
Fauci Says Ebola Risk in US "essentially Zero"

Fauci Says Ebola Risk in US "essentially Zero"

AP (Oct. 30, 2014) NIAID Director Anthony Fauci said the risk of Ebola becoming an epidemic in the U.S. is essentially zero Thursday at the Washington Ideas Forum. He also said an Ebola vaccine will be tested in West Africa in the next few months. (Oct. 30) Video provided by AP
Powered by NewsLook.com
Nurse Defies Ebola Quarantine With Bike Ride

Nurse Defies Ebola Quarantine With Bike Ride

AP (Oct. 30, 2014) A nurse who vowed to defy Maine's voluntary quarantine for health care workers who treated Ebola patients followed through on her promise Thursday, leaving her home for an hour-long bike ride. (Oct. 30) Video provided by AP
Powered by NewsLook.com
Pot-Infused Edibles Raise Concerns in Colorado

Pot-Infused Edibles Raise Concerns in Colorado

AFP (Oct. 30, 2014) Colorado may have legalized marijuana for recreational use, but the debate around the decision still continues, with a recent - failed - attempt to ban cannabis-infused edibles. Duration: 01:53 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins