Scientists tested a way to use blood samples to see if glioblastoma treatment is working. An earlier trial used the SonoCloud-9 device from Carthera in Lyon, France to open the blood–brain barrier for about an hour so the chemotherapy drug paclitaxel could enter the brain.
The University of Michigan team showed that opening the barrier lets tumor material enter the blood. They capture tiny particles called extracellular vesicles and particles (EVPs) and compare counts before and after each chemotherapy session. If the count goes up across sessions, they judged the treatment successful.
Difficult words
- glioblastoma — a fast-growing cancer in the brain
- blood–brain barrier — a layer that protects the brain from blood
- chemotherapy — treatment using strong drugs to kill cancer
- extracellular vesicle — a tiny particle released by cellsextracellular vesicles, EVPs
- paclitaxel — a chemotherapy drug used against cancer
Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.
Discussion questions
- Would you prefer a blood test to check brain cancer treatment? Why or why not?
- What might be good or bad about opening the blood–brain barrier for treatment?
- How would you feel about a doctor using tiny particles in blood to judge success?
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