Please do not leave this page until complete. This can take a few moments.
Scientists at the MDI Biological Laboratory in Bar Harbor have discovered a contradiction in the current thought on some aspects of aging by studying sea urchins, some of which have a life expectancy of more than 100 years and share a close genetic relationship with humans.
James Coffman, associate professor at the lab, and collaborator Andrea Bodnar of the Bermuda Institute of Ocean Studies, studied the capacity of sea urchins to regenerate tissues and lost or damaged body parts in the hope of better understanding the aging process in humans. They published a paper on the topic in the scientific journal Aging Cell.
Some species of sea urchins can quickly regrow damaged spines and feet and even live to very old ages with good health. They can even reproduce as if they were still young.
The scientists looked at three species of sea urchins that had short, medium and long life spans. They expected sea urchins with short life expectancies to experience a decline in their ability to regenerate tissues as they age, which follows the prevailing theory. However, they found that regenerative capacity was not affected by age.
“We [originally] wanted to find out why the species with short and intermediate life expectancies aged and the long-lived species didn’t,” Coffman said in a statement. “But what we found is that aging is not inevitable; sea urchins don’t appear to age, even when they are short lived.”
He added, “Because these findings were unexpected in light of the prevailing theories about the evolution of aging, we may have to rethink theories on why aging occurs.”
The researchers said they plan to further study why short-lived sea urchins don’t experience cell deterioration with age. In particular, they want to look at the role of the immune system in maintaining youthful function into old age.
The research was funded by various grants including from the National Institute on Aging, the Bermuda Charitable Trust, the Institutional Development Awards and the National Institutes of Health.
MDI Biological Laboratories will be sponsoring a course on aging for worldwide experts in Bar Harbor from June 19 through July 3. Twenty early-career scientists and more than 20 experts on aging are expected to attend.
Read more
MDI Bio Lab discoveries might advance heart repair
MDI Bio Lab awarded $20K for aging research program
Living to 150? Two scientists make a $300 bet with a $500M payoff
The Giving Guide helps nonprofits have the opportunity to showcase and differentiate their organizations so that businesses better understand how they can contribute to a nonprofit’s mission and work.
Learn MoreWork for ME is a workforce development tool to help Maine’s employers target Maine’s emerging workforce. Work for ME highlights each industry, its impact on Maine’s economy, the jobs available to entry-level workers, the training and education needed to get a career started.
Learn MoreFew people are adequately prepared for all the tasks involved in planning and providing care for aging family members. SeniorSmart provides an essential road map for navigating the process. This resource guide explores the myriad of care options and offers essential information on topics ranging from self-care to legal and financial preparedness.
Learn moreThe Giving Guide helps nonprofits have the opportunity to showcase and differentiate their organizations so that businesses better understand how they can contribute to a nonprofit’s mission and work.
Work for ME is a workforce development tool to help Maine’s employers target Maine’s emerging workforce. Work for ME highlights each industry, its impact on Maine’s economy, the jobs available to entry-level workers, the training and education needed to get a career started.
Few people are adequately prepared for all the tasks involved in planning and providing care for aging family members. SeniorSmart provides an essential road map for navigating the process. This resource guide explores the myriad of care options and offers essential information on topics ranging from self-care to legal and financial preparedness.
In order to use this feature, we need some information from you. You can also login or register for a free account.
By clicking submit you are agreeing to our cookie usage and Privacy Policy
Already have an account? Login
Already have an account? Login
Want to create an account? Register
In order to use this feature, we need some information from you. You can also login or register for a free account.
By clicking submit you are agreeing to our cookie usage and Privacy Policy
Already have an account? Login
Already have an account? Login
Want to create an account? Register
This website uses cookies to ensure you get the best experience on our website. Our privacy policy
To ensure the best experience on our website, articles cannot be read without allowing cookies. Please allow cookies to continue reading. Our privacy policy
Comments