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Jacquet-Guibon S, Dupays AG, Coudry V, Crevier-Denoix N, Leroy S, Siñeriz F, Chiappini F, Barritault D, Denoix JM. Randomized controlled trial demonstrates the benefit of RGTA® based matrix therapy to treat tendinopathies in racing horses. PLoS One 2018. [PMID: 29522564 PMCID: PMC5844532 DOI: 10.1371/journal.pone.0191796] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
A randomized controlled trial was performed on racing horses, to evaluate the efficacy of a new class of therapeutic agents in regenerative medicine—ReGeneraTing Agents® (RGTA®), to treat tendinopathies. Preliminary uncontrolled studies on tendon healing in racing horses with RGTA® (OTR4131)—Equitend® showed encouraging results, justifying performing a randomized, controlled, multicenter study with a two-year racing performance follow up. The objective of this study was to evaluate the effect of Equitend® versus placebo on acute superficial digital flexor tendonitis in racing French Standardbred Trotters (ST). Twenty-two ST were randomly and blindly assigned to receive with a ratio of 2 to 1, a single Equitend® (n = 14) or placebo (n = 8) intralesional injection under ultrasonographic guidance. Horses were evaluated over 4 months, by clinical and ultrasonographic evaluations (day 0, months 1, 2, 4), and their racing performances followed up over the 2 years after treatment. During the first month of treatment, a significant decrease in the cross-sectional area (CSA) was found in the Equitend® group (p = 0.04). After 4 months, the number of Equitend® treated horses with an improved CSA was significantly higher than the placebo-treated horses (p = 0.03571). The Equitend® group returned to their pre-injury performance level, racing in, and winning, significantly more races than the placebo group (p = 0.01399 and 0.0421, respectively). Furthermore, recurrence was significantly higher in the placebo group than in the Equitend® group (71.4% vs 16.6%, p = 0.02442). In conclusion, we measured a significant, short-term, reduction effect on CSA and demonstrated a long-term beneficial effect of intralesional injection of Equitend® for the treatment of superficial digital flexor tendonitis on racing ST, racing 2. 3 times more often than placebo, with 3.3 times fewer recurrences maintaining pre-injury performance level. This study may open the way for the development of a human treatment of tendonitis.
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Affiliation(s)
- Sandrine Jacquet-Guibon
- Centre d’Imagerie et de Recherche sur les Affections Locomotrices Equines, Ecole Nationale vétérinaire d’Alfort, Maisons-Alfort, France
- Unité Sous Contrat 957, Biomécanique et Pathologie Locomotrice du Cheval, Institut National de la Recherche Agronomique, Ecole Nationale vétérinaire d’Alfort, Maisons-Alfort, France
- * E-mail:
| | | | - Virginie Coudry
- Centre d’Imagerie et de Recherche sur les Affections Locomotrices Equines, Ecole Nationale vétérinaire d’Alfort, Maisons-Alfort, France
- Unité Sous Contrat 957, Biomécanique et Pathologie Locomotrice du Cheval, Institut National de la Recherche Agronomique, Ecole Nationale vétérinaire d’Alfort, Maisons-Alfort, France
| | - Nathalie Crevier-Denoix
- Unité Sous Contrat 957, Biomécanique et Pathologie Locomotrice du Cheval, Institut National de la Recherche Agronomique, Ecole Nationale vétérinaire d’Alfort, Maisons-Alfort, France
| | | | - Fernando Siñeriz
- Organ, Tissue, Regeneration, Repair and Replacement Société Actions Simplifiés, Paris, France
| | - Franck Chiappini
- Organ, Tissue, Regeneration, Repair and Replacement Société Actions Simplifiés, Paris, France
| | - Denis Barritault
- Organ, Tissue, Regeneration, Repair and Replacement Société Actions Simplifiés, Paris, France
- Laboratoire de recherche sur la Croissance Cellulaire, Réparation, et Régénération Tissulaire, Faculté des Sciences, Université Paris-Est Créteil, Créteil, France
| | - Jean-Marie Denoix
- Centre d’Imagerie et de Recherche sur les Affections Locomotrices Equines, Ecole Nationale vétérinaire d’Alfort, Maisons-Alfort, France
- Unité Sous Contrat 957, Biomécanique et Pathologie Locomotrice du Cheval, Institut National de la Recherche Agronomique, Ecole Nationale vétérinaire d’Alfort, Maisons-Alfort, France
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Barritault D, Gilbert-Sirieix M, Rice KL, Siñeriz F, Papy-Garcia D, Baudouin C, Desgranges P, Zakine G, Saffar JL, van Neck J. RGTA ® or ReGeneraTing Agents mimic heparan sulfate in regenerative medicine: from concept to curing patients. Glycoconj J 2016; 34:325-338. [PMID: 27924424 PMCID: PMC5487810 DOI: 10.1007/s10719-016-9744-5] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Revised: 10/18/2016] [Accepted: 10/20/2016] [Indexed: 01/12/2023]
Abstract
The importance of extracellular matrix (ECM) integrity in maintaining normal tissue function is highlighted by numerous pathologies and situations of acute and chronic injury associated with dysregulation or destruction of ECM components. Heparan sulfate (HS) is a key component of the ECM, where it fulfils important functions associated with tissue homeostasis. Its degradation following tissue injury disrupts this delicate equilibrium and may impair the wound healing process. ReGeneraTing Agents (RGTA®s) are polysaccharides specifically designed to replace degraded HS in injured tissues. The unique properties of RGTA® (resistance to degradation, binding and protection of ECM structural and signaling proteins, like HS) permit the reconstruction of the ECM, restoring both structural and biochemical functions to this essential substrate, and facilitating the processes of tissue repair and regeneration. Here, we review 25 years of research surrounding this HS mimic, supporting the mode of action, pre-clinical studies and therapeutic efficacy of RGTA® in the clinic, and discuss the potential of RGTA® in new branches of regenerative medicine.
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Affiliation(s)
- Denis Barritault
- OTR3, 4 rue Française, 75001 Paris, France
- Laboratory Cell Growth and Tissue Repair (CRRET), UPEC 4397/ERL CNRS 9215, Université Paris Est Cretéil, Université Paris Est, F-94000 Créteil, France
| | | | | | | | - Dulce Papy-Garcia
- Laboratory Cell Growth and Tissue Repair (CRRET), UPEC 4397/ERL CNRS 9215, Université Paris Est Cretéil, Université Paris Est, F-94000 Créteil, France
| | - Christophe Baudouin
- Institut de la Vision, 17 rue Moreau, 75012 Paris, France
- Universite Paris-Saclay, Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), 55 Avenue de Paris, 78000 Versailles, France
- Centre Hospitalier National d’Opthalmologie des Quinze Vingts, 28 rue de Charenton, 75012 Paris, France
| | - Pascal Desgranges
- Department of Vascular Surgery, Hopital Henri Mondor, Université Paris-Est Créteil, 51 avenue du Maréchal de Lattre de Tassigny, 94000 Créteil, France
| | - Gilbert Zakine
- Service de Chirurgie Plastique et Reconstructrice, 33 rue de la Tour, Paris, 75016 France
| | - Jean-Louis Saffar
- EA2496 Laboratoire Pathologies, Imagerie et Biothérapies Oro-Faciales, Faculté de Chirurgie Dentaire, Université Paris Descartes, Sorbonne Paris Cité, 1 rue Maurice Arnoux, 92120 Montrouge, France
| | - Johan van Neck
- Department of Plastic and Reconstructive Surgery, Erasmus MC - University Medical Center, Rotterdam, The Netherlands
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Emond AL, Bertoni L, Seignour M, Coudry V, Denoix JM. Peripheral neuropathy of a forelimb in horses: 27 cases (2000–2013). J Am Vet Med Assoc 2016; 249:1187-1195. [DOI: 10.2460/javma.249.10.1187] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Barritault D, Desgranges P, Meddahi-Pellé A, Denoix JM, Saffar JL. RGTA ®-based matrix therapy - A new branch of regenerative medicine in locomotion. Joint Bone Spine 2016; 84:283-292. [PMID: 27663756 DOI: 10.1016/j.jbspin.2016.06.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Accepted: 06/10/2016] [Indexed: 10/21/2022]
Abstract
Matrix therapy is an innovative, minimally invasive approach in the field of regenerative medicine, that aims to promote tissue regeneration by reconstructing the cellular microenvironment following tissue injury. This approach has significant therapeutic potential in the treatment of pathologies characterized by tissue inflammation and damage, or following injury, conditions which can be incapacitating and cost-consuming. Heparan sulfate mimics, termed ReGeneraTing Agents (RGTA®s) have emerged as a unifying approach to treat these diverse pathologies. Today, skin and corneal healing topical products have already been used in clinics, demonstrating a proof of concept in humans. In this review, we present key evidence that RGTA®s regenerate damaged tissue in bone, muscle, tendon and nerve, with astonishing results. In animal models of bone surgical defects and inflammatory bone loss, RGTA® induced healing of injured bones by controlling inflammation and bone resorption, and stimulated bone formation by coordinating vascularization, recruitment and differentiation of competent cells from specific niches, restoring tissue quality to that of uninjured tissue, evoking true regeneration. In models of muscle injury, RGTA® had marked effects on healing speed and quality, evidenced by increased muscle fiber density, maturation, vascularization and reduced fibrosis, more mature motor endplates and functional recovery. Applications merging RGTA®-based matrix therapy and cell therapy, combining Extra-Cellular Matrix reconstruction with cells required for optimal tissue repair show significant promise. Hence restoration of the proper microenvironment is a new paradigm in regenerative medicine. Harnessing the potential of RGTA® in this brave, new vision of regenerative therapy will therefore be the focus of future studies.
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Affiliation(s)
- Denis Barritault
- Université Paris-Est Créteil, Laboratoire CRRET and OTR3, 4 rue Française, 75001 Paris, 1.2, France.
| | - Pascal Desgranges
- Université Paris-Est-Créteil, Hôpital Henri Mondor, Paris XII, Vascular Surgery Unit, 51, av du MI de Lattre de Tassigny, 94010 Creteil, France
| | - Anne Meddahi-Pellé
- Inserm U1148, LVTS, Université Paris 7, Université Paris 13, Sorbonne Paris Cité, Hôpital Bichat, 46 rue H Huchard, 75018 Paris, France
| | - Jean-Marie Denoix
- Université Paris Est, Ecole Nationale Vétérinaire d'Alfort, USC 957 BPLC, 94700 Maisons-Alfort, France; Centre d'Imagerie et de Recherche sur les Affections Locomotrices Equine (CIRALE), 14430 Goustranville, France
| | - Jean-Louis Saffar
- EA2496 Laboratoire Pathologies, Imagerie et Biothérapies Oro-Faciales, Faculté de Chirurgie Dentaire, Université Paris Descartes, Sorbonne Paris Cité, 1 rue Maurice Arnoux, 92120 Montrouge, France
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