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Quiz: How well do you know this week`s health news? Are you aware of alternative medicine spending? Savvy on the latest swine flu recommendations? Give your brain a workout and ... USATODAYBrain Dysfunction Tracks Amyloid Plaques in Absence of Alzheimer`s (CME/CE) WHEELING, W.Va. (MedPage Today) -- Abnormalities in memory-associated brain activity are relatively common in people with amyloid plaques in their brains, even if they show no signs of cognitive impairment or dementia, researchers said. Med Page TodayMayo researchers find race has role in incidence, survival of rare brain tumor The incidence of a rare and deadly tumor called primary central nervous system lymphoma is two times higher in black Americans, ages 20 to 49, than in white Americans, according to a Mayo Clinic study published in the June issue of Journal of Neuro-Oncology. In patients older than 49, the results were reversed. Topix.netBrain Activation Associated With Changes in Heart Rate, Heart Rate Variability, and Plasma Catecholamines During Rectal Distention Objective: To test the hypothesis that gut stimulation provokes autonomic arousal via activation of regional cerebral cortices. How the human brain processes interoceptive signals and forms initial autonomic arousal is one of the key questions to be answered in research on emotion. Methods: Twelve healthy males participated in this study. A barostat bag was inserted in the rectum and intermittently inflated with 0, 20, or 40 mm Hg at random for 80 seconds. H215O positron emission tomography (PET) of the brain, electrocardiography, and blood sampling for catecholamines were performed. Changes in regional cerebral blood flow were interpreted using statistical parametric mapping. Results: Rectal distention with 40 mm Hg induced a significant increase in heart rate, low frequency (LF)/high frequency (HF) ratio of heart rate variability, and plasma adrenaline. Activated brain areas that were associated with increased heart rate during rectal distention were the right insula, right operc psychosomaticmedicine.orgA Crystal Ball For Brain Cancer? Bronnie McNabb, 57, considers himself lucky. When his aggressive brain cancer returned after chemotherapy and radiation last winter, his UCLA doctor prescribed the off-label use of Avastin, a drug shown to quell cancers in the breast, colon and lung. One month later, McNabb's tumors had shrunk by 95 percent. Subsequent brain scans show no trace of his cancer at all. Medical News TodayUAMS First To Use Device To Unclog Patient`s Veins In Brain In the days leading up to Glen Deaton's emergency trip from Trumann to the University of Arkansas for Medical Sciences (UAMS), large veins that drain blood from his brain were clotting. Confusion, nausea, vomiting and blurred vision were among his symptoms. An MRI revealed cerebral venous sinus thrombosis a type of stroke caused by a clot that in Deaton's case ran from the top of his head nearly to his neck. Medical News TodayWhat Is Alzheimer`s Disease? What Causes Alzheimer`s Disease? Alzheimer's disease is a progressive neurologic disease of the brain leading to the irreversible loss of neurons and the loss of intellectual abilities, including memory and reasoning, which become severe enough to impede social or occupational functioning. Alzheimer's disease is also known as simply Alzheimer's, and Senile Dementia of the Alzheimer Type (SDAT) . Medical News TodayNew UCLA Method Predicts Which Brain Tumors Will Respond To Avastin UCLA researchers have uncovered a new way to scan brain tumors and predict which ones will be shrunk by the drug avastin - before the patient ever starts treatment. By linking high water movement in tumors to positive drug response, the UCLA team predicted with 70 percent accuracy which patients' tumors were the least likely to grow six months after therapy. Bronnie McNabb, 57, considers himself lucky. Medical News TodayAlzheimer`s Comment On Research That Genes In Early Onset Are Associated With Memory, Published In Nature, 28 July 2009 Memory is a fundamental function of nerve cells in the brain, and loss of memory is a key symptom in many people with Alzheimer's disease. In order for memory to function correctly, nerve cells must be able to communicate effectively with each other. Many important proteins in the brain ensure that this communication is maintained between healthy nerve cells by monitoring the junctions, or synapses, between cells. Medical News TodayBrain Scan May Help Predict Cancer Drug Response Title: Brain Scan May Help Predict Cancer Drug ResponseCategory: Health NewsCreated: 7/31/2009 7:00:00 AMLast Editorial Review: 7/31/2009 MedicineNet1 2 |
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