PMID- 29897097 OWN - NLM STAT- MEDLINE DCOM- 20181224 LR - 20190116 IS - 1473-2262 (Electronic) IS - 1473-2262 (Linking) VI - 35 DP - 2018 Jun 13 TI - Improved tendon healing using bFGF, BMP-12 and TGFbeta1 in a rat model. PG - 318-334 LID - 10.22203/eCM.v035a22 [doi] AB - Several growth factors (GFs) are expressed as tendons heal, but it remains unknown whether their combined application enhances the healing process. This matter was addressed by applying a combination of basic fibroblast growth factor (bFGF), bone morphogenetic protein 12 (BMP-12) and transforming growth factor beta 1 (TGFbeta1) in a rat Achilles tendon transection model. GFs were applied in one of the three following ways: i) direct application of all three factors at the time of surgery; ii) sequential, tiered percutaneous injection of individual factors immediately after surgery, 48 h and 96 h later; iii) load of all three factors onto a collagen sponge implanted at the time of surgery. After 1, 2, 4 and 8 weeks, healing was assessed based on tendon length and thickness, mechanical strength, stiffness and histology. Best results were achieved when GFs were loaded onto a collagen sponge - with a rapid increase in mechanical strength (load to failure, 71.2 N vs. 7.7 N in controls), consistent tendon length over time (9.9 mm vs. 16.2 mm in controls) and faster tendon remodelling, as measured by histology - followed by tiered injection therapy over 96 h. In conclusion, implantation of a GF-loaded collagen sponge could provide a promising treatment, especially in high-performance athletes and revision cases prone to re-rupture. For conservative treatment, tiered percutaneous GF application could be an option for improving clinical outcome. FAU - Majewski, M AU - Majewski M FAU - Heisterbach, P AU - Heisterbach P FAU - Jaquiery, C AU - Jaquiery C FAU - Durselen, L AU - Durselen L FAU - Todorov, A AU - Todorov A FAU - Martin, I AU - Martin I FAU - Evans, C H AU - Evans CH FAU - Muller, S A AU - Muller SA AD - Department of Orthopaedic Surgery, University of Basel, Spitalstrasse 21, 4031 Basel, Switzerland.sebastian.mueller@usb.ch. LA - eng PT - Journal Article DEP - 20180613 PL - United States TA - Eur Cell Mater JT - European cells & materials JID - 100973416 RN - 0 (Bone Morphogenetic Proteins) RN - 0 (Transforming Growth Factor beta1) RN - 0 (growth differentiation factor 7) RN - 103107-01-3 (Fibroblast Growth Factor 2) RN - 9007-34-5 (Collagen) SB - IM MH - Animals MH - Biomechanical Phenomena MH - Bone Morphogenetic Proteins/*pharmacology MH - Collagen/metabolism MH - Fibroblast Growth Factor 2/*pharmacology MH - Horses MH - Male MH - Rats, Sprague-Dawley MH - Tendons/*pathology/surgery MH - Transforming Growth Factor beta1/*pharmacology MH - Weight-Bearing MH - Wound Healing/*drug effects EDAT- 2018/06/14 06:00 MHDA- 2018/12/26 06:00 CRDT- 2018/06/14 06:00 PHST- 2018/06/14 06:00 [entrez] PHST- 2018/06/14 06:00 [pubmed] PHST- 2018/12/26 06:00 [medline] AID - vol035a22 [pii] AID - 10.22203/eCM.v035a22 [doi] PST - epublish SO - Eur Cell Mater. 2018 Jun 13;35:318-334. doi: 10.22203/eCM.v035a22.