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Exercise triggers stem cells in muscle
Date:2/6/2012

archers studied the cells' response to strain on different substrates. They found that MSC response is very sensitive to the mechanical environment, indicating that conditions of muscle strain affect the cells' activity.

"These findings are important because we've identified an adult stem cell in muscle that may provide the basis for muscle health with exercise and enhanced muscle healing with rehabilitation/movement therapy," Boppart said. "The fact that MSCs in muscle have the potential to release high concentrations of growth factor into the circulatory system during exercise also makes us wonder if they provide a critical link between enhanced whole-body health and participation in routine physical activity."

Next, the group hopes to determine whether these cells contribute to the decline in muscle mass over a person's lifetime. Preliminary data suggest MSCs become deficient in muscle with age. The team hopes to develop a combinatorial therapy that utilizes molecular and stem-cell-based strategies to prevent age-related muscle loss.

"Although exercise is the best strategy for preserving muscle as we age, some individuals are just not able to effectively engage in physical activity," Boppart said. "Disabilities can limit opportunities for muscle growth. We're working hard to understand how we can best utilize these cells effectively to preserve muscle mass in the face of atrophy."

The team published its findings in the journal PLoS One. The Illinois Regenerative Medicine Institute, the Ellison Medical Foundation and the Mary Jane Neer Foundation supported this work.


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Contact: Liz Ahlberg
eahlberg@illinois.edu
217-244-1073
University of Illinois at Urbana-Champaign
Source:Eurekalert  

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