seniors

Depression in the elderly linked to Alzheimer's risk

A study, involving 371 patients with mild cognitive impairment, has found that those with depressive symptoms had higher levels of amyloid-beta, particularly in the frontal cortex and the anterior and posterior cingulate gyrus (both involved in mood disorders such as depression).

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Alzheimer’s caregivers may benefit from tailored interventions

A study involving 206 spousal and adult children caregivers of dementia sufferers (mostly Alzheimer’s) has found that about 84% of caregivers reported a clinically significant burden. Three factors were significant contributors to the burden:

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Unmet needs among those living at home with dementia

A study involving 254 people with dementia living at home has found that 99% of people with dementia and 97% of their caregivers had one or more unmet needs, 90% of which were safety-related. More than half of the patients had inadequate meaningful daily activities at a senior center or at home, one-third still needed a dementia evaluation or diagnosis, and more than 60% needed medical care for conditions related or unrelated to their dementia.

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Alzheimer's a much larger cause of death than reported

A new U.S. study suggests that Alzheimer's disease and other dementias are markedly under-reported on death certificates and medical records. Death certificates tend to only provide an immediate cause, such as pneumonia, and don’t mention the underlying condition that provoked it.

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Highest risk Alzheimer's genetic carriers take positive steps after learning risk status

It’s often argued that telling people that they carry genes increasing their risk of Alzheimer’s will simply upset them to no purpose. A new study challenges that idea.

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Genes implicated in late-onset Alzheimer's disease

11 new genetic susceptibility factors for Alzheimer’s identified

The largest international study ever conducted on Alzheimer's disease (I-GAP) has identified 11 new genetic regions that increase the risk of late-onset Alzheimer’s, plus 13 other genes yet to be validated. Genetic data came from 74,076 patients and controls from 15 countries.

Eleven genes for Alzheimer's disease have previously been identified.

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Gene variation associated with brain atrophy in MCI

Analysis of data from 237 patients with mild cognitive impairment (mean age 79.9) has found that, compared to those carrying the ‘normal’ ApoE3 gene (the most common variant of the ApoE gene), the ApoE4 carriers showed markedly greater rates of shrinkage in 13 of 15 brain regions thought to be key components of the brain networks disrupted in Alzheimer’s.

http://www.eurekalert.org/pub_releases/2014-01/rson-gva010714.php

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Alzheimer's gene worse for women

Analysis of data from more than 8,000 people, most of them older than 60, has revealed that, among the 5,000 people initially tested cognitively normal, carrying one copy of the “Alzheimer’s gene” (ApoE4) only slightly increased men’s risk of developing

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Gene variant makes some brains more resilient to Alzheimer's

Analysis of 700 subjects from the Alzheimer's Disease Neuroimaging Initiative has revealed a genetic mutation (rs4728029) that’s associated with people who develop Alzheimer’s pathology but don’t show clinical symptoms in their lifetime. The gene appears to be related to an inflammatory response in the presence of phosphorylated tau. In other words, some people’s brains react to phosphorylated tau with a ‘bad’ inflammatory response, while others don’t.

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