Featured Research

from universities, journals, and other organizations

Stem cell treatment may become option to treat nonhealing bone fractures

Date:
June 13, 2011
Source:
The Endocrine Society
Summary:
Stem cell therapy enriched with a bone-regenerating hormone, insulin-like growth factor-I (IGF-I), can help mend broken bones in fractures that are not healing normally, a new animal study finds.

Stem cell therapy enriched with a bone-regenerating hormone, insulin-like growth factor-I (IGF-I), can help mend broken bones in fractures that are not healing normally, a new animal study finds.

The results are being presented at The Endocrine Society's 93rd Annual Meeting in Boston.

A deficiency of fracture healing is a common problem affecting an estimated 600,000 people annually in North America, according to the principal investigator, Anna Spagnoli, MD, associate professor of pediatrics and biomedical engineering at the University of North Carolina at Chapel Hill.

"This problem is even more serious," Spagnoli said, "in children with osteogenesis imperfecta, or brittle bone disease, and in elderly adults with osteoporosis, because their fragile bones can easily and repeatedly break, and bone graft surgical treatment is often not successful or feasible"

Fractures that do not heal within the normal timeframe are called non-union fractures. Using an animal model of a non-union fracture, a "knockout" mouse that lacks the ability to heal broken bones, Spagnoli and her colleagues studied the effects of transplanting adult stem cells enriched with IGF-I. They took mesenchymal stem cells (adult stem cells from the bone marrow) of mice and engineered the cells to express IGF-1. Then they transplanted the treated cells into knockout mice with a fracture of the tibia, the long bone of the leg.

Using computed tomography (CT) scanning, the researchers showed that the treated mice had better fracture healing than did control mice either left untreated or treated only with stem cells. They found that the stem cells enriched with IGF-I became bone cells and helped the cells in the broken bones to repair the fracture, speeding the healing. Compared with controls left to heal on their own, treated mice had more bone bridging the fracture gap, and that new bone was three to four times stronger, according to Spagnoli.

"More excitingly, we found that stem cells empowered with IGF-I restored the formation of new bone in a mouse lacking the ability to repair broken bones. This is the first evidence that stem cell therapy can address a deficiency of fracture repair," she said.

This success in an animal model of fracture non-union, Spagnoli said, "is a crucial step toward developing a stem cell-based treatment for patients with fracture non-unions."

"We envision a clinical use of combined mesenchymal stem cells and IGF-1 similar to the approach employed in bone marrow transplant, in which stem cell therapy is combined with growth factors to restore blood cells," she said. "I think this treatment will be feasible to start testing in patients in a few years."

IGF-I is approved for treatment of children with a deficiency of this hormone, causing growth failure.

The National Institutes of Health supported this study through a NIDDK-NIH R01 grant.


Story Source:

The above story is based on materials provided by The Endocrine Society. Note: Materials may be edited for content and length.


Cite This Page:

The Endocrine Society. "Stem cell treatment may become option to treat nonhealing bone fractures." ScienceDaily. ScienceDaily, 13 June 2011. <www.sciencedaily.com/releases/2011/06/110606092530.htm>.
The Endocrine Society. (2011, June 13). Stem cell treatment may become option to treat nonhealing bone fractures. ScienceDaily. Retrieved July 28, 2014 from www.sciencedaily.com/releases/2011/06/110606092530.htm
The Endocrine Society. "Stem cell treatment may become option to treat nonhealing bone fractures." ScienceDaily. www.sciencedaily.com/releases/2011/06/110606092530.htm (accessed July 28, 2014).

Share This




More Health & Medicine News

Monday, July 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Trees Could Save More Than 850 Lives Each Year

Trees Could Save More Than 850 Lives Each Year

Newsy (July 27, 2014) A national study conducted by the USDA Forest Service found that trees collectively save more than 850 lives on an annual basis. Video provided by Newsy
Powered by NewsLook.com
Google's Next Frontier: The Human Body

Google's Next Frontier: The Human Body

Newsy (July 27, 2014) Google is collecting genetic and molecular information to paint a picture of the perfectly healthy human. Video provided by Newsy
Powered by NewsLook.com
What's To Blame For Worst Ebola Outbreak In History?

What's To Blame For Worst Ebola Outbreak In History?

Newsy (July 27, 2014) A U.S. doctor has tested positive for the deadly Ebola virus, as the worst-ever outbreak continues to grow. Video provided by Newsy
Powered by NewsLook.com
Losing Sleep Leaves You Vulnerable To 'False Memories'

Losing Sleep Leaves You Vulnerable To 'False Memories'

Newsy (July 27, 2014) A new study shows sleep deprivation can make it harder for people to remember specific details of an event. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins