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Watching Brain Repair Live on MRI

March 31st, 2008 Medgadget Editors News

Harvard researchers have developed a method to monitor tissue repair within the brain using MRI and some nifty eye drops.

In this report, Harvard researchers describe how they link a relatively common MRI probe (superparamagnetic iron oxide nanoparticles) to a short DNA sequence that binds to proteins in cells responsible for brain tissue repair (glia and astrocytes). Then, researchers used the eye drops on mice with conditions that cause ‘leaks’ in the blood-brain barrier. When the animals’ brains were scanned using MRI, brain repair activity was visible. Glia and astrocytes help repair brain and nerve tissue, and have a role in numerous diseases and disorders that cause at least microscopic breaches in the blood-brain barrier, including traumatic brain injury, multiple sclerosis, stroke, cardiac arrest, and glioma, among others. Furthermore, the researchers believe that the probes may also help diagnose thinning of vascular walls in brains, which occurs as Alzheimer’s disease progresses.
“When people are sick, the last thing you want to do is puncture their skulls for a biopsy,” said Gerald Weissmann, MD, Editor-in-Chief of The FASEB Journal, “but sometimes this is unavoidable. These probes of genes in action go a long way toward ushering in an age where extracting brain tissue to identify a disease will seem as crude as when doctors measured skulls to diagnose a mental disease.”

Press release: Harvard researchers publish MRI images of genes in action in the living brain

Medgadget Editors

Medical technologies transform the world! Join us and see the progress in real time. At Medgadget, we report the latest technology news, interview leaders in the field, and file dispatches from medical events around the world since 2004.

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