Alzheimer's Disease News and Research

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Alzheimer's disease (AD) is an irreversible, progressive brain disease that slowly destroys memory and thinking skills and, eventually, the ability to carry out the simplest tasks of daily living. In most people with AD, symptoms first appear after age 60. AD is the most common cause of dementia among older people, but it is not a normal part of aging. Dementia refers to a decline in cognitive function that interferes with daily life and activities. AD starts in a region of the brain that affects recent memory, then gradually spreads to other parts of the brain. Although treatment can slow the progression of AD and help manage its symptoms in some people, currently there is no cure for this devastating disease.

Hypertension associated with risk for mild cognitive impairment

High blood pressure appears to be associated with an increased risk for mild cognitive impairment, a condition that involves difficulties with thinking and learning, according to a report in the December issue of Archives of Neurology.

10 Dec 2007

Sugary drinks may increase Alzheimer's risk

Excess drinking of sugary beverages like soda may increase the risk of Alzheimer's disease, suggests new research in mice.

10 Dec 2007

Regular exercise helps reduce the risk of Alzheimer's, depression and dementia

British researchers from Bristol University say following a regular exercise programme can significantly reduce the risk of Alzheimer's disease by as much as a third.

10 Dec 2007

Older brains out of sync - memory and reasoning impaired

According to new research from the U.S., as people get older communication between different regions of the brain breaks down.

6 Dec 2007

Growing old can affect the higher-level brain systems that govern cognition

A team of Howard Hughes Medical Institute researchers has shown that normal aging disrupts communication between different regions of the brain.

5 Dec 2007

Missing brain protein may be one of the culprits behind autism and other brain disorders

The protein helps synapses develop. Synapses--through which neurons communicate with one other-underlie our ability to learn and remember. Now Li-Huei Tsai, Picower Professor of Neuroscience at MIT, has uncovered an enzyme that is key to that protein's activity.

5 Dec 2007

Cognitive 'fog' of normal aging linked to brain system disruption

Comparisons of the brains of young and old people have revealed that normal aging may cause cognitive decline due to deterioration of the connections among large-scale brain systems.

5 Dec 2007

Brain systems become less coordinated with age, even in the absence of disease

Some brain systems become less coordinated with age even in the absence of Alzheimer's disease, according to a new study from Harvard University.

5 Dec 2007

Scientists characterize Alzheimer's neurotoxin structure - potential new treatment approaches

Amyloid plaques, the hallmark of Alzheimer's disease, are clumps of fiber-like misfolded proteins which many experts think cause this devastating neurodegenerative disease.

4 Dec 2007

Hydrogen sulfide provides clues to a longer life

Hydrogen sulfide, or H2S, the chemical that gives rotten eggs their sulfurous stench - and the same compound that researchers at Fred Hutchinson Cancer Research Center successfully have used to put mice into a state of reversible metabolic hibernation - has now been shown to significantly increase life span and heat tolerance in the nematode worm, or C. elegans.

4 Dec 2007

Wireless nano device for cell biology

A wireless, nano-scale voltmeter developed at the University of Michigan is overturning conventional wisdom about the physical environment inside cells.

3 Dec 2007

Genetic testing over the net a waste of money say experts

According to a panel of top British scientists people who buy genetic tests from private companies are usually wasting their money.

3 Dec 2007

Hypertension may heighten effects of Alzheimer's disease

Having hypertension, or high blood pressure, reduces blood flow in the brains of adults with Alzheimer's disease, according to a new study presented at the annual meeting of the Radiological Society of North America (RSNA).

29 Nov 2007

What are the benefits and risks of fitting patients with radiofrequency identification devices?

In 2004, the United States Food and Drug Administration approved a radiofrequency identification (RFID) device that is implanted under the skin of the upper arm of patients and that stores the patient's medical identifier.

27 Nov 2007

Brain stem-cell therapies more complicated than thought

An MIT research team's latest finding suggests that stem cell therapies for the brain could be much more complicated than previously thought.

27 Nov 2007

Study looks at progesterone for Alzheimer's

The first study on progesterone and Alzheimer's disease has found no clear preventive benefit for the widely prescribed hormone in an animal model.

27 Nov 2007

Cholinesterase inhibitors do not seem to delay Alzheimer disease

Researchers have examined the evidence in favour of giving people considered to be close to developing dementia the drugs that are most commonly used to treat the condition itself.

27 Nov 2007

Screening for dementia red flags in primary care: Is it time?

Primary care physicians should focus on "dementia red flags" rather than routinely screen individuals with no dementia symptoms just because they've reached a certain age, according to Malaz Boustani, M.D., MPH, of the Indiana University School of Medicine and the Regenstrief Institute, Inc. and colleagues from the University of Kent and the University of Cambridge in the United Kingdom in a commentary published in the Nov. 28 issue of the Journal of the American Medical Association.

27 Nov 2007

Australian stem cell scientist on target to prevent age-related loss of brain function

Stem cell scientists are developing a novel approach to slow or possibly prevent the cognitive decline that typically occurs with advancing age.

27 Nov 2007

Omega-3 fatty acids protect the brain against Parkinson's disease

Omega-3 fatty acids protect the brain against Parkinson's disease, according to a study by Université Laval researchers published in the online edition of the FASEB Journal, the journal of the Federation of American Societies for Experimental Biology.

27 Nov 2007