Navigation Links
Turning back the clock on aging muscles?
Date:2/20/2014

A study co-published in Nature Medicine this week by University of Toronto researcher Penney Gilbert has determined a stem cell based method for restoring strength to damaged skeletal muscles of the elderly.

Skeletal muscles are some of the most important muscles in the body, supporting functions such as sitting, standing, blinking and swallowing. In aging individuals, the function of these muscles significantly decreases.

"You lose fifteen percent of muscle mass every single year after the age of 75, a trend that is irreversible," cites Gilbert, Assistant Professor at the Institute of Biomaterials & Biomedical Engineering (IBBME) and the Donnelly Centre for Cellular & Biomolecular Research (CCBR). The study originates from Gilbert's postdoctoral research at Stanford University's Baxter Laboratory for Stem Cell Biology.

Through tracing the signaling pathways of the cells, the researchers including lead author, Professor Helen Blau, and postdoctoral researcher Ben Cosgrove determined that during aging, a subpopulation of stem cells begin to express a modification of a protein that inhibits their ability to grow and make new stem cells.

"But if we instead treated those cells outside the body with a drug that prevented that protein modification from occurring, in combination with culturing the cells on something soft that is reminiscent of soft skeletal tissue, like a hydrogel biomaterial, the combination allowed the aged cells to grow and make more copies of themselves," Gilbert describes.

The rejuvenated cell cultures were then transplanted into injured and aged tissues, with remarkable results: the transplanted cells returned strength to the damaged and aged tissues to levels matching a young, healthy state.

"We've now shown that muscle stem cells progressively lose their stem cell function during aging," Cosgrove said in a statement. "This treatment does not turn the clock back on

dysfunctional stem cells in the aged population. Rather, it stimulates stem cells from old muscle tissues that are still functional to begin dividing and self-renewing."

"An important thing to stress here is that this is not a panacea for aging in general," warns Dr. Blau. The stem cell treatment would only be used to repair localized defects in relatively small muscles found in the hip area, the throat, or the muscles in the eye.

One of the significant challenges to elderly individuals who receive hip transplants, for instance, is the challenge of repairing skeletal muscles around the hip joint injured during surgery. The study points to the potential for future post-surgery therapies that could leave elderly hip replacement patients spry in a fraction of the time.

"Even a small, localized transplantation could have a huge impact on quality of life," Blau argues, and adds, "One big advantage is that because the cells would come from the person's own muscles there would be no problem with an immune response."

"It's a really new, exciting field," says Gilbert, who argues that the muscle stem cell field, which only began to isolate muscle stem cells for study within the last five years, is especially "wide open" in Toronto where "there are really impassioned clinician researchers who are interested in restoring strength in aging and disease.


'/>"/>

Contact: Erin Vollick
comm.ibbme@utoronto.ca
416-946-8019
University of Toronto
Source:Eurekalert  

Related medicine news :

1. Turning autism upside down: When symptoms are strengths
2. Turning Stone’s Skaná Spa Honored by SpaFinder Readers as Top Casino Spa and Top Spa for Golf
3. Agein Corporation, a Leading Anti-Aging Company, Responds to Research Showing More Men Turning to Cosmetic Surgery to Increase Work Opportunities
4. TurningPoint Appraised at CMMI Level 3 for Services
5. FlipHTML5.com Now Offers A New Page Turning Maker Software
6. TurningPoint Ranks No. 1605 on the 2013 Inc. 500
7. 5000 With Three-Year Sales Growth of 247%
8. Narconon Freedom Center Celebrates Eight Years Turning Hopeless Into Dopeless
9. Scott Sheldon Introduces Point of View Series; Turning Heads and Giving You "Piece of Mind"
10. Newly Released Parenting Upward Guide: Crafted for the Adult Children of the 10,000 Baby Boomers Turning 65 Every Day
11. Could turning on a gene prevent diabetes?
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Turning back the clock on aging muscles?
(Date:5/27/2016)... ... 2016 , ... Each year Standard Process Inc. ... this year’s Life University winner of a $2,500 scholarship from Standard ... Awards ceremony. , Outerbridge is approaching her last quarter at Life University in ...
(Date:5/26/2016)... (PRWEB) , ... May 26, 2016 , ... There are ... Hot Dog and Sausage Council (NHDSC) suggests that Americans prefer their dogs straight off ... 63 percent say grilling is their favorite way to cook a hot dog, far ...
(Date:5/26/2016)... ... May 26, 2016 , ... Intalere, ... members and suppliers for its inaugural Member Conference at the Paris Hotel in ... elevating the operational health of America’s healthcare providers. , The conference was highlighted ...
(Date:5/26/2016)... (PRWEB) , ... May 26, 2016 , ... On Memorial ... and women who lost their lives in military battle for the country. The ... in 2015 to provide more programs that empower independence for disabled military veterans, as ...
(Date:5/26/2016)... Franklin, TN (PRWEB) , ... May 26, 2016 , ... ... today, and more than 32 million cancer survivors worldwide. On Sunday, June 5, 2016, ... the 29th annual National Cancer Survivors Day®. , National Cancer Survivors Day® is ...
Breaking Medicine News(10 mins):
(Date:5/26/2016)... 2016 A key trend that ... emergence of new treatments. Cardax, a development stage life ... The therapy is expected to fulfil large unmet medical ... conducting studies to develop new treatments for osteoarthritis. One ... involved in osteoarthritis are being investigated, and early trials ...
(Date:5/26/2016)... WELLESLEY, Massachusetts , May 26, 2016 ... sequencing (NGS) has matured into an essential life science ... research and development applications. BCC Research reveals in its ... of a second growth phase, one powered by a ... applied fields.      (Logo: http://photos.prnewswire.com/prnh/20140723/694805 ...
(Date:5/25/2016)... Deutschland und GERMANTOWN, Maryland , ... Zusammenarbeit mit Therawis bedient dringenden ...   QIAGEN N.V. (NASDAQ: ... bekannt, eine Lizenz- und Entwicklungsvereinbarung mit Therawis Diagnostics ... die Onkologie eingegangen zu sein. Ein erstes Projekt ...
Breaking Medicine Technology: