“‘Silent strokes’ that cause small areas of brain damage have been tied to memory and thinking problems, but it has been difficult to study these ‘silent strokes’ due to the cost and inconvenience of obtaining brain MRIs,” said study author Brendan J. Kelley, MD, of the University of Cincinnati and a member of the American Academy of Neurology. “With this study, we found that a quick, seven-question test can be a cost-effective tool to help identify people at increased risk of developing dementia.”
For the research, 23,830 people from the REGARDS study with an average age of 64 with no memory problems who had never had a stroke completed the stroke symptoms questionnaire at the start of the study and every six months for at least two years. The questionnaire asks about symptoms of stroke or transient ischemic attack (TIA), or a “mini-stroke” where symptoms resolve quickly with no permanent damage. The participants’ memory and thinking skills were also tested yearly. During the study, 7,223 people had stroke symptoms.
The study found that people who had stroke symptoms were more likely to develop memory and thinking problems. Caucasians who had stroke symptoms were twice as likely to develop cognitive problems (11 percent) as Caucasians who did not have stroke symptoms (5 percent). African-Americans who had stroke symptoms were nearly 70 percent as likely to develop thinking problems (16 percent) as African-Americans who did not have stroke symptoms (about 10 percent).
“Our study highlights the importance of discussing stroke-like symptoms with your family doctor, even if they don't last long. These symptoms can be a warning sign that a person is at increased risk of stroke or problems with thinking or memory,” said Kelley.
The REGARDS study was supported by the National Institute of Neurological Disorders and Stroke, National Institutes of Health and Department of Health and Human Services.
To learn more about stroke and cognitive decline, visit http://patients.aan.com/go/home.
The American Academy of Neurology, an association of more than 26,000 neurologists and neuroscience professionals, is dedicated to promoting the highest quality patient-centered neurologic care. A neurologist is a doctor with specialized training in diagnosing, treating and managing disorders of the brain and nervous system such as Alzheimer’s disease, stroke, migraine, multiple sclerosis, brain injury, Parkinson’s disease and epilepsy.
For more information about the American Academy of Neurology, visit http://www.aan.com
Rachel L. Seroka | American Academy of Neurology
The personality factor: How to foster the sharing of research data
06.09.2017 | ZBW – Leibniz-Informationszentrum Wirtschaft
Europe’s Demographic Future. Where the Regions Are Heading after a Decade of Crises
10.08.2017 | Berlin-Institut für Bevölkerung und Entwicklung
At the productronica trade fair in Munich this November, the Fraunhofer Institute for Laser Technology ILT will be presenting Laser-Based Tape-Automated Bonding, LaserTAB for short. The experts from Aachen will be demonstrating how new battery cells and power electronics can be micro-welded more efficiently and precisely than ever before thanks to new optics and robot support.
Fraunhofer ILT from Aachen relies on a clever combination of robotics and a laser scanner with new optics as well as process monitoring, which it has developed...
Plants and algae use the enzyme Rubisco to fix carbon dioxide, removing it from the atmosphere and converting it into biomass. Algae have figured out a way to increase the efficiency of carbon fixation. They gather most of their Rubisco into a ball-shaped microcompartment called the pyrenoid, which they flood with a high local concentration of carbon dioxide. A team of scientists at Princeton University, the Carnegie Institution for Science, Stanford University and the Max Plank Institute of Biochemistry have unravelled the mysteries of how the pyrenoid is assembled. These insights can help to engineer crops that remove more carbon dioxide from the atmosphere while producing more food.
A warming planet
Our brains house extremely complex neuronal circuits, whose detailed structures are still largely unknown. This is especially true for the so-called cerebral cortex of mammals, where among other things vision, thoughts or spatial orientation are being computed. Here the rules by which nerve cells are connected to each other are only partly understood. A team of scientists around Moritz Helmstaedter at the Frankfiurt Max Planck Institute for Brain Research and Helene Schmidt (Humboldt University in Berlin) have now discovered a surprisingly precise nerve cell connectivity pattern in the part of the cerebral cortex that is responsible for orienting the individual animal or human in space.
The researchers report online in Nature (Schmidt et al., 2017. Axonal synapse sorting in medial entorhinal cortex, DOI: 10.1038/nature24005) that synapses in...
Whispering gallery mode (WGM) resonators are used to make tiny micro-lasers, sensors, switches, routers and other devices. These tiny structures rely on a...
Using ultrafast flashes of laser and x-ray radiation, scientists at the Max Planck Institute of Quantum Optics (Garching, Germany) took snapshots of the briefest electron motion inside a solid material to date. The electron motion lasted only 750 billionths of the billionth of a second before it fainted, setting a new record of human capability to capture ultrafast processes inside solids!
When x-rays shine onto solid materials or large molecules, an electron is pushed away from its original place near the nucleus of the atom, leaving a hole...
19.09.2017 | Event News
12.09.2017 | Event News
06.09.2017 | Event News
25.09.2017 | Power and Electrical Engineering
25.09.2017 | Health and Medicine
25.09.2017 | Physics and Astronomy