Immediate and delayed transplantation of mesenchymal stem cells improve muscle force after skeletal muscle injury in rats

Winkler, Tobias; von Roth, Philipp; Radojewski, Piotr; Urbanski, Alexander; Hahn, Sebastian; Preininger, Bernd; Duda, Georg N; Perka, Carsten (2012). Immediate and delayed transplantation of mesenchymal stem cells improve muscle force after skeletal muscle injury in rats. Journal of tissue engineering and regenerative medicine, 6 Suppl 3, s60-s67. Chichester: John Wiley & Sons 10.1002/term.1542

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Mesenchymal stem cell (MSC) therapy is a promising approach for regaining muscle function after trauma. Prior to clinical application, the ideal time of transplantation has to be determined. We investigated the effects of immediate and delayed transplantation. Sprague-Dawley rats received a crush trauma to the left soleus muscle. Treatment groups were transplanted locally with 2 × 10(6) autologous MSCs, either immediately or 7 days after trauma. Saline was used as sham therapy. Contraction force tests and histological analyses were performed 4 weeks after injury. GFP-labelled MSCs were followed after transplantation. The traumatized soleus muscles of the sham group displayed a reduction of twitch forces to 36 ± 17% and of tetanic forces to 29 ± 11% of the non-injured right control side, respectively. Delayed MSC transplantation resulted in a significant improvement of contraction maxima in both stimulation modes (twitch, p = 0.011; tetany, p = 0.014). Immediate transplantation showed a significant increase in twitch forces to 59 ± 17% (p = 0.043). There was no significant difference in contraction forces between muscles treated by immediate and delayed cell transplantation. We were able to identify MSCs in the interstitium of the injured muscles up to 4 weeks after transplantation. Despite the fundamental differences of the local environment, which MSCs encounter after transplantation, similar results could be obtained with respect to functional muscle regeneration. We believe that transplanted MSCs residing in the interstitial compartment evolve their regenerative capabilities through paracrine pathways. Our data suggest a large time window of the therapeutical measures.

Item Type:	Journal Article (Original Article)
Division/Institute:	04 Faculty of Medicine > Department of Radiology, Neuroradiology and Nuclear Medicine (DRNN) > Clinic of Nuclear Medicine
UniBE Contributor:	Radojewski, Piotr
ISSN:	1932-6254
Publisher:	John Wiley & Sons
Language:	English
Submitter:	Factscience Import
Date Deposited:	04 Oct 2013 14:42
Last Modified:	05 Dec 2022 14:13
Publisher DOI:	10.1002/term.1542
PubMed ID:	22761111
Web of Science ID:	000313431100007
URI:	https://boris.unibe.ch/id/eprint/17214 (FactScience: 224956)