In conditions such as brain cancer, stroke, trauma and multiple sclerosis, however, the barrier becomes leaky in and around the disease locations, researchers said. The study found that leaky barrier offers a unique point of entry, allowing molecules to access the brain and deliver drugs precisely on target. “Molecules like this normally couldn’t ferry cargo into the brain, but anywhere there’s a blood-brain barrier disruption, they can deliver drugs right to the site of pathology,” Shusta said in a statement. “This could be a way to hold therapies in place that don’t otherwise accumulate well in the brain so they can be more effective,” said Ben Umlauf from the University of Wisconsin-Madison. “There are several disease processes that disrupt the blood-brain barrier and we could conceive of delivering a variety of different therapies with these molecules,” said John Kuo from the University of Texas in the US.
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