Protein injection holds promise for muscular dystrophy treatment
Injecting a novel human protein into muscle affected by Duchenne muscular dystrophy significantly increases its size and strength, scientists have discovered.
|Last Updated: Nov 28, 2012, 05:52 PM IST|Source: Bureau
Washington: Injecting a novel human protein into muscle affected by Duchenne muscular dystrophy significantly increases its size and strength, scientists have discovered.
The findings could lead to a therapy akin to the use of insulin by diabetics.
The study was conducted by Dr. Julia von Maltzahn and Dr. Michael Rudnicki, the Ottawa scientist who discovered muscle stem cells in adults.
“This is an unprecedented and dramatic restoration in muscle strength,” said Dr. Rudnicki, a senior scientist and director for the Regenerative Medicine Program and Sprott Centre for Stem Cell Research at the Ottawa Hospital Research Institute.
He is also a Canada Research Chair in Molecular Genetics and professor in the Faculty of Medicine at the University of Ottawa.
“We know from our previous work that this protein, called Wnt7a, promotes the growth and repair of healthy muscle tissue. In this study we show the same types of improvement in a mouse model of Duchenne muscular dystrophy. We found that Wnt7a injections increased muscle strength almost two-fold, to nearly normal levels. We also found that the size of the muscle fibre increased and there was less muscle damage, compared to mice not given Wnt7a,” he explained.
Duchenne muscular dystrophy is a genetic disorder that affects one of every 3,500 newborn males. In Canada, all types of muscular dystrophy affect more than 50,000 people. The disease often progresses to a state where the muscles are so depleted that the person dies due to an inability to breath. For people with Duchenne muscular dystrophy, this usually happens in their 20s or 30s.“This is also exciting because we think it’s a therapeutic approach that could apply to other muscle-wasting diseases,” said Dr. Rudnicki.
These results were published in the Proceedings of the National Academy of Sciences.
ANI
By clicking “Accept All Cookies”, you agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts.
Cookies Setting
By clicking “Accept All Cookies”, you agree to the storing of cookies on your device and the processing of information obtained via those cookies (including about your preferences, device and online activity) by us and our commercial partners to enhance site navigation, personalise ads, analyze site usage, and assist in our marketing efforts. More information can be found in our Cookies and Privacy Policy. You can amend your cookie settings to reject non-essential cookies by clicking Cookie Settings below.
Manage Consent Preferences
Strictly Necessary Cookies
These cookies are necessary for the website to function and cannot be switched off in our systems. They are usually only set in response to actions made by you which amount to a request for services, such as setting your privacy preferences, logging in or filling in forms. You can set your browser to block or alert you about these cookies, but some parts of the site will not then work or you may not be able to login.
Functional Cookies
These cookies enable the website to provide enhanced functionality and personalisation. They may be set by us or by third party providers whose services we have added to our pages. If you do not allow these cookies then some or all of these services may not function properly.
Targeting Cookies
These cookies may be set through our site by our advertising partners. They may be used by those companies to build a profile of your interests and show you relevant adverts on other sites. They are also used to limit the number of times you see an advert as well as help measure the effectiveness of an advertising campaign. They do not store directly personal information, but are based on uniquely identifying your browser and internet device. If you do not allow these cookies, you will experience less targeted advertising.
Performance Cookies
These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. They help us to know which pages are the most and least popular and see how visitors move around the site. All information these cookies collect is aggregated and therefore anonymous. If you do not allow these cookies we may not know when you have visited our site, and may not be able to monitor its performance.