Researchers used mice to compare recovery after a small surgical cut. They studied a key immune signal called TNF-α (tumor necrosis factor alpha). The team blocked TNF-α by three different methods, one of them was Etanercept, a drug used in people.
The researchers expected that blocking the signal would reduce pain. Instead, mice with TNF-α blocked had pain for a much longer time. The team says the body may need some signals to stop pain. They warn patients and doctors not to stop all anti-inflammatory treatment. Scientists now want to learn which molecules hurt and which help recovery.
Difficult words
- researcher — a person who studies science and experimentsresearchers
- immune — relating to the body's protection from disease
- signal — a message that cells use to communicate
- anti-inflammatory — reducing swelling and pain in the body
- treatment — medical care to help a person get better
- molecule — a very small part of a substance or cellmolecules
- recovery — the process of becoming healthy again
Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.
Discussion questions
- Why do the researchers warn patients and doctors about stopping treatment?
- Have you or someone you know used anti-inflammatory medicine? What happened?
- Why might the body need some signals to stop pain?
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