Inflammation Helps To Heal Wounds - Surprise Discovery
"We hope that our findings stimulate further research to dissect different roles played by tissue inflammation in clinical settings, so we can utilize the positive effects and control the negative effects of tissue inflammation," said Lan Zhou, M.D., Ph.D., a researcher involved in the work from the Neuroinflammation Research Center/Department of Neurosciences/Lerner Research Institute at the Cleveland Clinic in Ohio.
Zhou and colleagues found that the presence of inflammatory cells (macrophages) in acute muscle injury produce a high level of a growth factor called insulin-like growth factor-1 (IGF-1) which significantly increases the rate of muscle regeneration. The research report shows that muscle inflammatory cells produce the highest levels of IGF-1, which improves muscle injury repair. To reach this conclusion, the researchers studied two groups of mice. The first group of mice was genetically altered so they could not mount inflammatory responses to acute injury. The second group of mice was normal. Each group experienced muscle injury induced by barium chloride. The muscle injury in the first group of mice did not heal, but in the second group, their bodies repaired the injury. Further analysis showed that macrophages within injured muscles in the second group of mice produced a high level of IGF-1, leading to significantly improved muscle repair.
"For wounds to heal we need controlled inflammation, not too much, and not too little," said Gerald Weissmann, M.D., Editor-in-Chief of The FASEB Journal, "It's been known for a long time that excess anti-inflammatory medication, such as cortisone, slows wound healing. This study goes a long way to telling us why: insulin-like growth factor and other materials released by inflammatory cells helps wound to heal."
Haiyan Lu, Danping Huang, Noah Saederup, Israel F. Charo, Richard M. Ransohoff, and Lan Zhou. Macrophages recruited via CCR2 produce insulin-like growth factor-1 to repair acute skeletal muscle injury FASEB J. doi:10.1096/fj.10-171579.
Source: Federation of American Societies for Experimental Biology
Recommended related news
There are no references listed for this article.
Please use one of the following formats to cite this article in your essay, paper or report:
George, Robert. "Inflammation Helps To Heal Wounds - Surprise Discovery." Medical News Today. MediLexicon, Intl., 6 Oct. 2010. Web.
22 May. 2017. <http://www.medicalnewstoday.com/articles/203538.php>
George, R. (2010, October 6). "Inflammation Helps To Heal Wounds - Surprise Discovery." Medical News Today. Retrieved from
Please note: If no author information is provided, the source is cited instead.
Contact our news editors
For any corrections of factual information, or to contact our editorial team, please see our contact page.
Copyright Medical News Today: Excluding email/sharing services explicitly offered on this website, material published on Medical News Today may not be reproduced, or distributed without the prior written permission of Medilexicon International Ltd. Please contact us for further details.