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Author: admin, 04.11.2013. Category: Treatment For Tinnitus

Micrograph showing cortical pseudolaminar necrosis, a finding seen in strokes on medical imaging and at autopsy.
Long-term brain damage caused by stroke could be reduced by saving cells called pericytes that control blood flow in capillaries, reports a new study led by scientists from University College London. Until now, many scientists believed that blood flow within the brain was solely controlled by changes in the diameter of arterioles, blood vessels that branch out from arteries into smaller capillaries. The study, published this week in Nature, shows not only that pericytes are the main regulator of blood flow to the brain, but also that they tighten and die around capillaries after stroke. The new research also gives insight into the mechanisms underlying the use of functional magnetic resonance imaging to detect blood flow changes in the brain. Brain infarction or stroke is caused by a blood clot blocking a blood vessel in the brain, which leads to interruption of blood flow and shortage of oxygen.
A study in mice shows how a breakdown of the brain's blood vessels may amplify or cause problems associated with Alzheimer's disease.

A major study has found that giving stroke patients medications to lower their blood pressure during the first 48 hours after a stroke does not reduce the likelihood of death or major disability.
A new study in animals shows that using a compound to block the body's immune response greatly reduces disability after a stroke. After eating a meal, you can thank your vagus nerve for sensing and signaling that feeling of fullness to your brain. Combining two cutting-edge techniques reveals that neurons in the prefrontal cortex are built to respond to reward or aversion, a finding with implications for treating mental illness and addictions. It is not surprising that a good night's sleep improves our ability to remember what we learned during the day.
When it comes to measuring brain activity, scientists have tools that can take a precise look at a small slice of the brain (less than one cubic millimeter), or a blurred look at a larger area. As the difficulty of making a decision based on sensory evidence increases, activity in the brain's insular cortex also increases, according to researchers at Georgia State University.

The latest research reveals that the brain's blood supply is in fact chiefly controlled by the narrowing or widening of capillaries as pericytes tighten or loosen around them.
This significantly impairs blood flow in the long term, causing lasting damage to brain cells. The team of scientists from UCL, Oxford University and the University of Copenhagen showed that certain chemicals could halve pericyte death from simulated stroke in the lab, and hope to develop these into drugs to treat stroke victims.

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Comments to «Drugs to reduce tinnitus 2014»

  1. aH writes:
    Ringing in the ears and if it does operate, it may neck will never ever take strain.
  2. Qruzin writes:
    Published online in the journal eLife (MRA?�see see Magnetic Resonance Angiography.