Targeting poor housekeeping in cells could lead to new treatments for Parkinson's disease, scientists believe.
MORE ON PARKINSON'S:
Research has linked the disease to a genetic defect that stops cells clearing out defective mitochondria, tiny metabolic generators that supply energy.
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Daily Chores And Exercise
A recent study in the <a href="http://www.neurology.org/content/early/2012/04/18/WNL.0b013e3182535f0e.extract" target="_hplink">journal <em>Neurology</em></a> showed that simple activities like <a href="http://www.huffingtonpost.com/2012/04/20/chores-alzheimers-exercise-_n_1440969.html" target="_hplink">cooking, cleaning and washing the dishes</a> -- as well as good, old-fashioned exercise -- is associated with a decreased Alzheimer's disease risk, even among people who are age 80 and older. <br> <br> Researchers found that the people who were the least active each day -- in the bottom 10th percentile in the study -- were two times more likely to go on to develop Alzheimer's disease, compared with people who were in the top 10th percentile for daily activity. <br> <br> The results were even more marked when evaluating the intensity of physical activity: Those who were in the bottom 10th percentile for physical activity intensity were three times more likely to develop Alzheimer's, compared with those in the top 10th percentile.
Speak Two Languages
Being bilingual could strengthen your brainpower and protect against dementia, according to a recent study published in the <a href="http://www.cell.com/trends/cognitive-sciences/" target="_hplink">journal <em>Trends in Cognitive Sciences</em></a>. <br> <br> HuffPost Canada Living <a href="http://www.huffingtonpost.ca/2012/04/02/benefits-of-being-bilingual_n_1396671.html" target="_hplink">explains why</a>: <br> <br> <blockquote>The anticipation of having to speak one of two language at any given time forces the brain to run continually, and results in an experience that helps avoid a mental conflict between languages.</blockquote> <br> <br> "It is rather like a reserve tank in a car. When you run out of fuel, you can keep going for longer because there is a bit more in the safety tank," study researcher Dr. Ellen Bialystok <a href="http://www.guardian.co.uk/science/2011/feb/18/bilingual-alzheimers-brain-power-multitasking" target="_hplink">told <em>The Guardian</em></a>.
Research in flies suggests that the main compound in turmeric, called curcumin, could have powers against Alzheimer's. <br> <br> <em>The Telegraph</em> reported on a study in the journal <em>PLoS ONE</em>, which suggested that <a href="http://www.telegraph.co.uk/health/healthnews/9084973/Having-a-curry-could-help-ward-off-dementia.html" target="_hplink">curcumin may work</a> by reducing the amount of oligomers, which are the "precursor" forms of amyloid plaques in the brain. <br> <br> A previous study in the journal <em>Annals of Indian Academy of Neurology</em> discussed the possible <a href="http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2781139/" target="_hplink">effects of curcumin on Alzheimer's</a>. Researchers wrote: <br> <br> <blockquote>Due to various effects of curcumin, such as decreased Beta-amyloid plaques, delayed degradation of neurons, metal-chelation, anti-inflammatory, antioxidant and decreased microglia formation, the overall memory in patients with AD has improved.</blockquote>
<a href="http://www.huffingtonpost.co.uk/2011/12/01/puzzles-and-exercise-help-beat-dementia-symptoms_n_1122502.html" target="_hplink">Doing some puzzles</a> and playing games every day could ward off mental decline, according to a recent study in the journal <em>BMC Medicine</em>. <br> <br> Researchers from the University of Erlangen conducted a study in dementia patients in nursing homes, and had the study participants do exercises like bowling and solving puzzles together, the Press Association reported. They also spent some time doing things like woodwork and gardening. <br> <br> The researchers found that all of these activities seemed to have the same effect on the study participants' <a href="http://www.huffingtonpost.co.uk/2011/12/01/puzzles-and-exercise-help-beat-dementia-symptoms_n_1122502.html" target="_hplink">brain functioning</a>, compared with the typical dementia medication, the Press Association reported. <br> <br> Another recent study in the journal <em>Archives of Neurology</em> showed that life-long reading and game-playing could <a href="http://www.medicinenet.com/script/main/art.asp?articlekey=153901" target="_hplink">decrease beta amyloid levels</a> in the brain, which are considered a "hallmark of the condition," MedicineNet reported. <br> <br> "Staying cognitively active over the lifetime may reduce the risk of Alzheimer's by preventing the accumulation of Alzheimer's-related pathology," study researcher Susan Landau, a research scientist at the Helen Wills Neuroscience Institute at the University of California, Berkeley, <a href="http://www.medicinenet.com/script/main/art.asp?articlekey=153901" target="_hplink">told MedicineNet</a>.
Elderly people who <a href="http://www.bbc.co.uk/news/health-11537068" target="_hplink">walk six to nine miles a week</a> could decrease their risk of dementia and brain functioning problems, BBC News reported. <br> <br> The 2009 study in <em>Neurology</em> included 299 people whose average age was 78. Researchers found that people who walked the most in the study -- six to nine miles a week -- had a halved risk of developing the brain problems as people who walked the least in the study, according to BBC News. <br> <br> Similarly, a 2007 study that also appeared in the journal <em>Neurology</em> showed that people age 65 and older who regularly exercise have a <a href="http://www.eurekalert.org/pub_releases/2007-12/aaon-wam121107.php" target="_hplink">decreased risk of vascular dementia</a>. That study included 749 people.
Eat Your Fish And Nuts
Researchers from Columbia University Medical Center found that eating a <a href="http://www.huffingtonpost.com/2012/05/06/omega-3-fatty-acids-alzheimers-memory-brain_n_1475806.html" target="_hplink">diet high in omega-3 fatty acids</a> -- such as fish, nuts and chicken -- is linked with lower levels of of beta-amyloid protein, which is linked with Alzheimer's disease. <br> <br> The study, published in the journal Neurology, included 1,219 people age 65 and older who didn't have dementia. The researchers found that the higher their consumption of the omega-3 fatty acids, the lower the beta-amyloid in the blood.
Drink Green Tea
That refreshing green brew could have powers against Alzheimer's disease, according to research from Newcastle University. <br> <br> WebMD reported that when <a href="http://www.webmd.com/alzheimers/news/20110106/green-tea-may-help-prevent-alzheimers-disease" target="_hplink">green tea is digested</a>, the released compounds have protective effects against Alzheimer's. <br> <br> "When green tea is digested by enzymes in the gut, the resulting chemicals are actually more effective against key triggers of Alzheimer's development than the undigested form of the tea," study researcher Ed Okello <a href="http://www.guardian.co.uk/society/2011/jan/06/green-tea-alzheimers-cancer" target="_hplink">told <em>The Guardian</em></a>.
Find out if there are any quick and easy brain training exercises you can do in order to prevent dementia.
Dysfunctional mitochondria are potentially very harmful. Cells normally dispose of them through a "hazardous waste" management system called mitophagy that causes the bean-like bodies to be digested and broken down.
Scientists have now discovered a biological pathway that allows mutations in a gene called FBxo7 to interfere with mitophagy.
In people with Parkinson's, this leads to a build-up of defective mitochondria that may result in the death of brain cells.
The study, published in the journal Nature Neuroscience, indicates that mitophagy might be the key to new treatment options for the disease.
Dr Helene Plun-Favreau, one of the researchers from the University College London Institute of Neurology, said: "These findings suggest that treatment strategies that target mitophagy might be developed to benefit patients with Parkinson's disease in the future.
"What makes the study so robust is the confirmation of defective mitophagy in a number of different Parkinson's models, including cells of patients who carry a mutation in the Fbxo7 gene."
Co-author Dr Heike Laman, from Cambridge University, said: "This research focuses the attention of the Parkinson's disease community on the importance of the proper maintenance of mitochondria for the health of neurons.
"We are really only at the very beginning of this work, but perhaps we can use this information to enable earlier diagnosis for Parkinson's disease patients or design therapies aimed at supporting mitochondrial health."
Professor Hugh Perry, chair of the neurosciences and mental health board at the Medical Research Council which part-funded the study, said the work raised "interesting questions" about brain cell death related to Parkinson's.
"The more we understand about the basic molecular events which contribute to the onset and progression of Parkinson's disease, the better placed we will be to develop treatments to stop it in its tracks," he said.