PMID- 19350658 OWN - NLM STAT- MEDLINE DCOM- 20091008 LR - 20220310 IS - 1554-527X (Electronic) IS - 0736-0266 (Linking) VI - 27 IP - 10 DP - 2009 Oct TI - Mesenchymal stem cells and insulin-like growth factor-I gene-enhanced mesenchymal stem cells improve structural aspects of healing in equine flexor digitorum superficialis tendons. PG - 1392-8 LID - 10.1002/jor.20887 [doi] AB - Tendinitis remains a catastrophic injury among athletes. Mesenchymal stem cells (MSCs) have recently been investigated for use in the treatment of tendinitis. Previous work has demonstrated the value of insulin-like growth factor-I (IGF-I) to stimulate cellular proliferation and tendon fiber deposition in the core lesion of tendinitis. This study examined the effects of MSCs, as well as IGF-I gene-enhanced MSCs (AdIGF-MSCs) on tendon healing in vivo. Collagenase-induced bilateral tendinitis lesions were created in equine flexor digitorum superficialis tendons (SDFT). Tendons were treated with 10 x 10(6) MSCs or 10 x 10(6) AdIGF-MSCs. Control limbs were injected with 1 mL of phosphate-buffered saline (PBS). Ultrasound examinations were performed at t = 0, 2, 4, 6, and 8 weeks. Horses were euthanized at 8 weeks and SDFTs were mechanically tested to failure and evaluated for biochemical composition and histologic characteristics. Expression of collagen types I and III, IGF-I, cartilage oligomeric matrix protein (COMP), matrix metalloproteinase-3 (MMP-3), matrix metalloproteinase-13 (MMP-13), and aggrecanase-1 (ADAMTS-4) were similar in MSC and control tendons. Both MSC and AdIGF-MSC injection resulted in significantly improved tendon histological scores. These findings indicate a benefit to the use of MSCs and AdIGF-MSCs for the treatment of tendinitis. CI - (c) 2009 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. FAU - Schnabel, Lauren V AU - Schnabel LV AD - Comparative Orthopaedics Laboratory, Department of Clinical Sciences, C3-187 Veterinary Medical Center, College of Veterinary Medicine, Cornell University, Ithaca, New York 14853, USA. FAU - Lynch, Maureen E AU - Lynch ME FAU - van der Meulen, Marjolein C H AU - van der Meulen MC FAU - Yeager, Amy E AU - Yeager AE FAU - Kornatowski, Matthew A AU - Kornatowski MA FAU - Nixon, Alan J AU - Nixon AJ LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Orthop Res JT - Journal of orthopaedic research : official publication of the Orthopaedic Research Society JID - 8404726 RN - 0 (Collagen Type I) RN - 0 (Collagen Type III) RN - 0 (Extracellular Matrix Proteins) RN - 0 (Glycoproteins) RN - 0 (Matrilin Proteins) RN - 67763-96-6 (Insulin-Like Growth Factor I) RN - EC 3.4.24.- (ADAM Proteins) RN - EC 3.4.24.- (Matrix Metalloproteinase 13) RN - EC 3.4.24.14 (Procollagen N-Endopeptidase) RN - EC 3.4.24.17 (Matrix Metalloproteinase 3) RN - EC 3.4.24.82 (ADAMTS4 Protein) SB - IM MH - ADAM Proteins/metabolism MH - ADAMTS4 Protein MH - Animals MH - Biomechanical Phenomena MH - Cell- and Tissue-Based Therapy/methods/*veterinary MH - Collagen Type I/metabolism MH - Collagen Type III/metabolism MH - Extracellular Matrix Proteins/metabolism MH - Female MH - Genetic Therapy/methods/*veterinary MH - Glycoproteins/metabolism MH - Horse Diseases/metabolism/pathology/*therapy MH - Horses MH - Insulin-Like Growth Factor I/*genetics/metabolism MH - Male MH - Matrilin Proteins MH - Matrix Metalloproteinase 13/metabolism MH - Matrix Metalloproteinase 3/metabolism MH - Mesenchymal Stem Cell Transplantation/methods/*veterinary MH - Mesenchymal Stem Cells/*cytology/metabolism MH - Procollagen N-Endopeptidase/metabolism MH - Tendinopathy/metabolism/therapy/*veterinary MH - Tendons/*diagnostic imaging/metabolism/pathology MH - Ultrasonography EDAT- 2009/04/08 09:00 MHDA- 2009/10/09 06:00 CRDT- 2009/04/08 09:00 PHST- 2009/04/08 09:00 [entrez] PHST- 2009/04/08 09:00 [pubmed] PHST- 2009/10/09 06:00 [medline] AID - 10.1002/jor.20887 [doi] PST - ppublish SO - J Orthop Res. 2009 Oct;27(10):1392-8. doi: 10.1002/jor.20887.