Regeneration

Tag archives for Regeneration

Who would have thought tiny fish could lead to big advances in medicine? Zebrafish (Danio rerio) and mammals have similar anatomy and physiology of the brain, eyes, gut, and cardiovascular systems. Some of the reasons why these fish are good models to understand cardiovascular physiology were recently explored in a new article published in Physiological Reviews.…

I came across a neat article in Scientific American that described how reindeer and elk regrow their antlers every year. Could you imagine putting that much energy into growing new bone each year complete with a velvety cover containing nerves, skin, and blood vessels? Although full-grown antlers lose their blood supply and animals scrape the velvet…

Limb regeneration in brittle stars

A new study published in Frontiers in Zoology examined the developmental process involved in regulating limb regeneration in brittle stars (Amphiura filiformis) following amputation of an arm. Limb regeneration is a multi-stage process involving initial healing and repair of the wounded site, initial growth of the limb followed by development of more complex layers of cells until…

Ask the Experts: Growing new limbs

A reader sent me the following question: “How does a lizard grow a new tail?” This was a very timely question as new research has shed light on this very phenomenon. A team of experts at Arizona State University led by Dr. Kenro Kusumi and colleagues have been studying limb regeneration in lizards.   The…

Researchers at Duke University are interested in understanding the metamorphosis of fruit flies from larvae to adult stage in an effort to understand how the insects grow new nerve endings as they undergo this transition. What is interesting is that the flies lose neurons they will not need as an adult and will grow new…

African rodent species resist scarring

You might be familiar with tissue regeneration in amphibians and reptiles where limbs can be fully regenerated following an injury. Until now, tissue regeneration following a wound was thought to be limited in mammals (ex: deer shed and regrow their antlers annually; some mice can regrow the tips of their fingers). Researchers discovered that African…

On a recent visit to The American Physiological Society’s website, I found this amazing story on regeneration that I thought you might enjoy: This summer’s action film, “The Amazing Spider-Man™,” is another match-up between the superhero and his nemesis the Lizard. Moviegoers and comic book fans alike will recall that the villain, AKA  Dr. Curt Connors,…