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Vater C, Mehnert E, Bretschneider H, Bolte J, Findeisen L, Matuszewski LM, Zwingenberger S. Dose-Dependent Effects of a Novel Selective EP 4 Prostaglandin Receptor Agonist on Treatment of Critical Size Femoral Bone Defects in a Rat Model. Biomedicines 2021; 9:biomedicines9111712. [PMID: 34829941 PMCID: PMC8615441 DOI: 10.3390/biomedicines9111712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 11/09/2021] [Accepted: 11/12/2021] [Indexed: 11/30/2022] Open
Abstract
Difficulties in treating pseudarthrosis and critical bone defects are still evident in physicians’ clinical routines. Bone morphogenetic protein 2 (BMP-2) has shown promising osteoinductive results but also considerable side effects, not unexpected given that it is a morphogen. Thus, the bone regenerative potential of the novel selective, non-morphogenic EP4 prostaglandin receptor agonist KMN-159 was investigated in this study. Therefore, mineralized collagen type-1 matrices were loaded with different amounts of BMP-2 or KMN-159 and implanted into a 5 mm critical-sized femoral defect in rats. After 12 weeks of observation, micro-computed tomography scans were performed to analyze the newly formed bone volume (BV) and bone mineral density (BMD). Histological analysis was performed to evaluate the degree of defect healing and the number of vessels, osteoclasts, and osteoblasts. Data were evaluated using Kruskal-Wallis followed by Dunn’s post hoc test. As expected, animals treated with BMP-2, the positive control for this model, showed a high amount of newly formed BV as well as bone healing. For KMN-159, a dose-dependent effect on bone regeneration could be observed up to a dose optimum, demonstrating that this non-morphogenic mechanism of action can stimulate bone formation in this model system.
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Affiliation(s)
- Corina Vater
- University Center of Orthopedic, Trauma and Plastic Surgery, University Hospital Carl Gustav Carus, Fetscherstrasse 74, 01307 Dresden, Germany; (H.B.); (J.B.); (L.F.); (L.-M.M.); (S.Z.)
- Center for Translational Bone, Joint and Soft Tissue Research, Medical Faculty and University Hospital Carl Gustav Carus, Technische Universität Dresden, Fetscherstrasse 74, 01307 Dresden, Germany
- Correspondence: (C.V.); (E.M.)
| | - Elisabeth Mehnert
- University Center of Orthopedic, Trauma and Plastic Surgery, University Hospital Carl Gustav Carus, Fetscherstrasse 74, 01307 Dresden, Germany; (H.B.); (J.B.); (L.F.); (L.-M.M.); (S.Z.)
- Center for Translational Bone, Joint and Soft Tissue Research, Medical Faculty and University Hospital Carl Gustav Carus, Technische Universität Dresden, Fetscherstrasse 74, 01307 Dresden, Germany
- Correspondence: (C.V.); (E.M.)
| | - Henriette Bretschneider
- University Center of Orthopedic, Trauma and Plastic Surgery, University Hospital Carl Gustav Carus, Fetscherstrasse 74, 01307 Dresden, Germany; (H.B.); (J.B.); (L.F.); (L.-M.M.); (S.Z.)
- Center for Translational Bone, Joint and Soft Tissue Research, Medical Faculty and University Hospital Carl Gustav Carus, Technische Universität Dresden, Fetscherstrasse 74, 01307 Dresden, Germany
| | - Julia Bolte
- University Center of Orthopedic, Trauma and Plastic Surgery, University Hospital Carl Gustav Carus, Fetscherstrasse 74, 01307 Dresden, Germany; (H.B.); (J.B.); (L.F.); (L.-M.M.); (S.Z.)
- Center for Translational Bone, Joint and Soft Tissue Research, Medical Faculty and University Hospital Carl Gustav Carus, Technische Universität Dresden, Fetscherstrasse 74, 01307 Dresden, Germany
| | - Lisa Findeisen
- University Center of Orthopedic, Trauma and Plastic Surgery, University Hospital Carl Gustav Carus, Fetscherstrasse 74, 01307 Dresden, Germany; (H.B.); (J.B.); (L.F.); (L.-M.M.); (S.Z.)
- Center for Translational Bone, Joint and Soft Tissue Research, Medical Faculty and University Hospital Carl Gustav Carus, Technische Universität Dresden, Fetscherstrasse 74, 01307 Dresden, Germany
| | - Lucas-Maximilian Matuszewski
- University Center of Orthopedic, Trauma and Plastic Surgery, University Hospital Carl Gustav Carus, Fetscherstrasse 74, 01307 Dresden, Germany; (H.B.); (J.B.); (L.F.); (L.-M.M.); (S.Z.)
- Center for Translational Bone, Joint and Soft Tissue Research, Medical Faculty and University Hospital Carl Gustav Carus, Technische Universität Dresden, Fetscherstrasse 74, 01307 Dresden, Germany
| | - Stefan Zwingenberger
- University Center of Orthopedic, Trauma and Plastic Surgery, University Hospital Carl Gustav Carus, Fetscherstrasse 74, 01307 Dresden, Germany; (H.B.); (J.B.); (L.F.); (L.-M.M.); (S.Z.)
- Center for Translational Bone, Joint and Soft Tissue Research, Medical Faculty and University Hospital Carl Gustav Carus, Technische Universität Dresden, Fetscherstrasse 74, 01307 Dresden, Germany
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