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Total 1260 results found since Jan 2013.
Chemical reaction keeps stroke-damaged brain from repairing itself
Nitric oxide, a gaseous molecule produced in the brain, can damage neurons. When the brain produces too much nitric oxide, it contributes to the severity and progression of stroke and neurodegenerative diseases such as Alzheimer's. Researchers recently discovered that nitric oxide not only damages neurons, it also shuts down the brain's repair mechanisms.
Source: ScienceDaily Headlines - February 4, 2013 Category: Science Source Type: news
Structural kinetics of the myosin power stroke Biochemistry
We have used transient kinetics, nanosecond time-resolved fluorescence resonance energy transfer (FRET), and kinetics simulations to resolve a structural transition in the Dictyostelium myosin II relay helix during the actin-activated power stroke. The relay helix plays a critical role in force generation in myosin, coupling biochemical changes in the ATPase...
Source: Proceedings of the National Academy of Sciences - April 30, 2013 Category: Science Authors: Muretta, J. M., Petersen, K. J., Thomas, D. D. Tags: Biological Sciences Source Type: research
Can Caresses Protect the Brain from Stroke? (preview)
You are visiting your elderly aunt, and you notice her speech begin to slur. She seems to be having trouble staying upright in her seat, and she looks confused. You recognize the signs of a stroke. You shout for your uncle to call 911 as you help your aunt lie down in a comfortable position. You run your fingers gently over her lips, face and fingertips as you sing into her ear and continue talking to her. The EMTs rush in and outfit her in what looks like a bathing cap encrusted with electronic bling--a kind of defibrillator designed to deliver electrical stimulation to her brain. As they carry her out on a stretcher, you...
Source: Scientific American - Official RSS Feed - June 26, 2013 Category: Science Tags: Mind & Brain Source Type: research
How to Protect Outdoor Workers (and yourself) from Heat Stroke
In a typical year 658 Americans die from heat-related causes, according to the U.S. Centers for Disease Control and Prevention. This summer extreme heat in the Southwest has left one man dead from heat stroke and dozens of people hospitalized due to heat-related illnesses . Researchers at Columbia University predict an increase in the number of heat waves over the next few years, suggesting a growing need for those who work or play outside to learn how to recognize and avoid heat-related illnesses. [More]
Source: Scientific American - Official RSS Feed - July 8, 2013 Category: Science Tags: Health,Everyday Science,Climate,Health Source Type: research
Stroke trigger more deadly for African-Americans
In a new study, results show that African-Americans were 39 times more likely to die of a stroke if they were exposed to an infection.
Source: ScienceDaily Headlines - February 8, 2014 Category: Science Source Type: news
ADHD drugs not linked to increased stroke risk among children
Children who take medication to treat attention deficit hyperactivity disorder don't appear to be at increased stroke risk, according to a study.
Source: ScienceDaily Headlines - February 12, 2014 Category: Science Source Type: news
Head, neck injuries may increase stroke risk among trauma patients younger than 50
Suffering an injury to the head or neck increases ischemic stroke risk three-fold among trauma patients younger than 50, according to research.
Source: ScienceDaily Headlines - February 13, 2014 Category: Science Source Type: news
Guideline: People with irregular heartbeat should take blood thinners to prevent stroke, experts say
An updated guideline recommends that people with nonvalvular atrial fibrillation, or irregular heartbeat, take oral anticoagulants, a type of blood thinner pill, to prevent stroke.
Source: ScienceDaily Headlines - February 24, 2014 Category: Science Source Type: news
Stimulation glove for stroke patients helps improve tactile perception, motor function
A glove that uses weak electrical pulses to stimulate the nerve fibers that connect the hands with the brain has been developed and been used to help recovery of patients who have suffered a stroke by using passive stimulation that improves sense of touch and motor skills. If applied regularly, this passive stimulation results in an improvement of both tactile perception and motor function.
Source: ScienceDaily Headlines - February 24, 2014 Category: Science Source Type: news
Surgery after major stroke also improves survival odds in elderly patients
Patients who are over the age of 60 and have suffered a major stroke due to blockage of the middle cerebral artery benefit from hemicraniectomy -- removal of part of the skull located above the affected brain tissue. These patients' chances of survival increase two-fold. However, patients who have been operated on often survive with severe disabilities, while patients who do not undergo the surgery generally die quickly.
Source: ScienceDaily Headlines - March 20, 2014 Category: Science Source Type: news
High blood pressure increases risk of stroke for atrial fibrillation patients
Poor blood pressure control among patients with atrial fibrillation is associated with a 50-percent increased risk of stroke, according to an analysis. The findings suggest that hypertension should be carefully monitored and controlled among patients with atrial fibrillation.
Source: ScienceDaily Headlines - March 30, 2014 Category: Science Source Type: news
New ultrasound device may add in detecting risk for heart attack, stroke
A new ultrasound device that could help identify arterial plaque that is at high risk of breaking off and causing heart attack or stroke has been developed by researchers. The prototype device has performed well in laboratory testing, but the researchers say they are continuing to optimize the technology. They hope to launch pre-clinical studies in the near future.
Source: ScienceDaily Headlines - April 24, 2014 Category: Science Source Type: news
How does stress increase risk for stroke, heart attack?
Scientists have shown that anger, anxiety, and depression not only affect the functioning of the heart, but also increase the risk for heart disease. Stroke and heart attacks are the end products of progressive damage to blood vessels supplying the heart and brain, a process called atherosclerosis. Atherosclerosis progresses when there are high levels of chemicals in the body called pro-inflammatory cytokines. It is thought that persisting stress increases the risk for atherosclerosis and cardiovascular disease by evoking negative emotions that, in turn, raise the levels of pro-inflammatory chemicals in the body.
Source: ScienceDaily Headlines - May 5, 2014 Category: Science Source Type: news
Chinese stroke patients fare better when hospitals follow guidelines
Patients who suffered a stroke in China were more likely to survive and avoid catching pneumonia when hospitals followed recommended researched-based guidelines. Only slightly more than half of patients received all guideline-recommended treatments.
Source: ScienceDaily Headlines - June 3, 2014 Category: Science Source Type: news
Possible benefits of brain stimulation on hand, arm movement following stroke
Researchers are studying whether stimulating the brain before rehabilitation could yield greater gains in motor function for people recovering from stroke. The technology is akin to a more advanced version of constraint-induced therapy in which clinicians physically tie down a patient's good arm, which forces the patient to use the injured side. With this non-invasive device, researchers are using electromagnetism to slow activity in portions of the healthy brain hemisphere that control the uninjured arm, similarly forcing the brain to use its injured half.
Source: ScienceDaily Headlines - June 4, 2014 Category: Science Source Type: news
