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Research Indicates Microencapsulation Produces Uniform Drug Release Vehicle

by Kathy Jones on September 5, 2013 at 7:43 PM
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 Research Indicates Microencapsulation Produces Uniform Drug Release Vehicle

Penn State researchers are reporting that easily manufactured microcapsules containing a brain cancer drug may simplify treatment and provide more tightly controlled therapy.

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"Brain tumors are one of the world's deadliest diseases," said Mohammad Reza Abidian, assistant professor of bioengineering, chemical engineering and materials science and engineering. "Typically doctors resect the tumors, do radiation therapy and then chemotherapy." The majority of chemotherapy is done intravenously, but, because the drugs are very toxic and are not targeted, they have a lot of side effects. Another problem with intravenous drugs is that they go everywhere in the bloodstream and do not easily cross the blood brain barrier so little gets to the target tumors. To counteract this, high doses are necessary. "We are trying to develop a new method of drug delivery," said Abidian. "Not intravenous delivery, but localized directly into the tumor site. "Current treatment already includes leaving wafers infused with the anti-tumor agent BCNU in the brain after surgery, but when the drugs in these wafers run out, repeating invasive placement is not generally recommended. "BCNU has a half life in the body of 15 minutes," said Abidian. "The drug needs protection because of the short half life. Encapsulation inside biodegradable polymers can solve that problem."



Source: Eurekalert
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