Humans have a 'salamander-like' ability to regrow cartilage, study finds

A new study has found that humans have a "salamander-like" ability to regrow damaged cartilage.

(CNN)Humans may not be able to regrow amputated limbs like salamanders can -- but we do have a "salamander-like" ability to regrow damaged cartilage, a new study has found.

The study, published Wednesday in the journal Science Advances, found that "cartilage in human joints can repair itself through a process similar to that used by creatures such as salamanders and zebrafish to regenerate limbs," according to the press release by Duke Health, which helped lead the research.
These findings could open the door to new treatments for joint injuries and diseases like osteoarthritis -- and perhaps even lead to human limb regeneration one day.
Salamanders, axolotl, and other animals with regenerative abilities have a type of molecule called microRNA, which help regulate joint tissue repair. We have microRNA too, but our mechanism for cartilage repair is stronger in some parts of the body, the study found. For example, the microRNA molecules are more active in our ankles, and less active in our knees and hips.