Biological Therapies in Regenerative Sports Medicine.
Regenerative medicine seeks to harness the potential of cell biology for tissue replacement therapies, which will restore lost tissue functionality. Controlling and enhancing tissue healing is not just a matter of cells, but also of molecules and mechanical forces. We first describe the main biological technologies to boost musculoskeletal healing, including bone marrow and subcutaneous fat-derived regenerative products, as well as platelet-rich plasma and conditioned media. We provide some information describing possible mechanisms of action. We performed a literature search up to January 2016 searching for clinical outcomes following the use of cell therapies for sports conditions, tendons, and joints. The safety and efficacy of cell therapies for tendon conditions was examined in nine studies involving undifferentiated and differentiated (skin fibroblasts, tenocytes) cells. A total of 54 studies investigated the effects of mesenchymal stem-cell (MSC) products for joint conditions including anterior cruciate ligament, meniscus, and chondral lesions as well as osteoarthritis. In 22 studies, cellular products were injected intra-articularly, whereas in 32 studies MSC products were implanted during surgical/arthroscopic procedures. The heterogeneity of clinical conditions, cellular products, and approaches for delivery/implantation make comparability difficult. MSC products appear safe in the short- and mid-term, but studies with a long follow-up are scarce. Although the current number of randomized clinical studies is low, stem-cell products may have therapeutic potential. However, these regenerative technologies still need to be optimized.
Regenerative Medicine Laboratory, BioCruces Health Research Institute, Cruces University Hospital, Pza Cruces 12, 48903, Barakaldo, Spain. iandia2010@hotmail.com.
Isabel
I
Andia
Department of Musculoskeletal Disorders, University of Salerno School of Medicine and Dentistry, Salerno, Italy.|Queen Mary University of London, Barts and the London School of Medicine and Dentistry Centre for Sports and Exercise Medicine, Mile End Hospital, 275 Bancroft Road, London, E1 4DG, England.
Nicola
N
Maffulli
D016118:Anterior Cruciate Ligament; D001691:Biological Therapy / Q000379:methods*; D006801:Humans; D059630:Mesenchymal Stem Cells; D053657:Platelet-Rich Plasma; D012038:Regeneration; D013708:Tendon Injuries / Q000628:therapy*; D016896:Treatment Outcome
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