Biosingularity

Archive for the ‘Alzheimer’s’ Category

It’s good news that we are living longer, but bad news that the longer we live, the better our odds of developing late-onset Alzheimer’s disease.

 

Many Alzheimer’s researchers have long touted fish oil, by pill or diet, as an accessible and inexpensive “weapon” that may delay or prevent this debilitating disease. Now, UCLA scientists have confirmed that fish oil is indeed a deterrent against Alzheimer’s, and they have identified the reasons why.

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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. The researchers linked the deterioration to a decrease in the integrity of the brain’s “white matter,” the tissue containing nerve cells that carry information. The researchers found that the disruption occurred even in the absence of pathology associated with Alzheimer’s disease (AD).

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MIT researchers have discovered a link between a gene believed to promote long lifespan and a pathway that flushes cholesterol from the body.

The finding could help researchers create drugs that lower the risk of diseases associated with high cholesterol, including atherosclerosis (clogged arteries) and Alzheimer’s disease.

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A new study by NYU Medical Center researchers shows for the first time that the immune system can combat the pathological form of tau protein, a key protein implicated in Alzheimer’s disease. The researchers, led by Einar Sigurdsson Ph.D. at New York University School of Medicine, created a vaccine in mice that suppresses aggregates of tau. The protein accumulates into harmful tangles in the memory center of the brains of Alzheimer’s patients.

The vaccine successfully slowed the deterioration of motor abilities produced by excessive amounts of tau in the central nervous system of mice, according to the study published in the August 22, 2007 issue of the Journal of Neuroscience. Dr. Sigurdsson plans to conduct follow-up studies using mice that slowly develop tangles and cognitive impairments without movement problems.

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With ethical issues concerning use of discarded embryos and technical problems hindering development of stem cell therapies, scientists in Korea are reporting the first successful use of a drug-like molecule to transform human muscle cells into nerve cells. Their report, scheduled for the August 8 issue of the Journal of the American Chemical Society, a weekly journal, states that the advance could lead to new treatments for stroke, Alzheimer’s disease, Parkinson’s disease and other neurological disorders.

 

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eople whose blood shows signs of inflammation are more likely to later develop Alzheimer’s disease than people with no signs of inflammation, according to a study published in the May 29, 2007, issue of Neurology, the scientific journal of the American Academy of Neurology.
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Coffee is among the most widely consumed beverages in the world, and that the preponderance of scientific evidence suggests that moderate coffee consumption (3-5 cups per day) may be associated with reduced risk of certain disease conditions, such as Parkinson’s disease. Some research in neuropharamacology suggests that one cup of coffee can halve the risk of Parkinson’s disease. Other studies have found it reduces the risk of Alzheimer’s disease, kidney stones, gallstones, depression and even suicide.
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