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Brain

Medical

Magnetic nanoparticles open blood-brain barrier for delivery of therapeutic molecules

The blood-brain barrier is a highly selective semipermeable barrier running inside almost all vessels in the brain that lets through water, some gases and a few other select molecules, while preventing potentially toxic elements in the blood from entering the brain. Researchers from the University of Montreal, Polytechnique Montréal, and CHU Sainte-Justine say that currently 98 percent of therapeutic molecules are also blocked by the barrier, but they have developed a technique using magnetic nanoparticles that opens the door for such molecules, thereby also opening the door to new treatments for brain diseases.Read More

Medical

Non-invasive Alzheimer's treatment restores memory using ultrasound

Alzheimer's disease is a chronic neurodegenerative disease that most often begins in people over 65 years of age. Usually it starts slowly and continues to worsen over time until the sufferer succumbs to an increasing loss of memory, bodily functions and, eventually, death. Research has shown that there is an association with Alzheimer's and the accumulation of plaques that affect the neuronal connections in the brain. Now researchers at the University of Queensland have discovered a new way to remove these toxic plaques using a non-invasive form of ultrasound therapy.Read More

Medical

New study suggests aging has little impact on brain function

When we get older, communication between neurons slows down and certain regions of the brain see reduced function. At least, that's the current understanding. But a new study by researchers at the University of Cambridge and Medical Research Council's Cognition and Brain Sciences Unit shows that the difference between older brains and younger ones may not be so great. The researchers demonstrated that functional magnetic resonance imaging (fMRI), which is commonly used to study brain activity, is susceptible to signal noise from changing vascular (blood vessel) activity.Read More

Science

Check out the big brain on the genetically modified mouse

Scientists at Duke University have pinpointed a regulator of gene activity that could lend insight into why we're so different from chimpanzees despite having a near-identical genetic makeup (94 per cent of our DNA is the same). When injected into a mouse embryo, the human version of a particular DNA sequence important for brain development caused the embryo to grow a considerably larger brain than other embryos treated with the chimpanzee version.Read More

Health & Wellbeing

Researchers find different pathways responsible for sugar addiction and healthy eating

Many who have tried to kick the sweet white crystals will tell you that "sugar addiction" is very real, and there are indeed neurological underpinnings that back them up. MIT researchers have now discovered that the pathways of the brain responsible for sugar addiction may differ from those which govern drug addiction and healthy eating, which could be a boon for studies and treatment of compulsive eating and obesity. Read More

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