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Lee JT, Kim S. Comparison of the biocompatibility and osteogenesis potential of whitlockite and an activin A/BMP2 chimera using a rat calvarial defect model: a pilot study. J Periodontal Implant Sci 2024; 54:432-443. [PMID: 39439104 PMCID: PMC11729243 DOI: 10.5051/jpis.2304280214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 03/31/2024] [Accepted: 04/02/2024] [Indexed: 10/25/2024] Open
Abstract
PURPOSE The aim of this study was to evaluate bone regeneration using whitlockite (WH) nanoparticles, collagenated bovine bone mineral, and an activin A/BMP2 chimera (AB204) on calvarial defects in rats. METHODS This study was conducted using 8 rats. Five-millimeter circular defects were formed on each side of the calvaria. The defects were randomly assigned to 3 groups (BO group: BioOss collagen, BO/WH group: BO + WH, and BO/WH/AB204 group: BO + WH + AB204). After healing periods of 2 and 4 weeks, histological and histomorphometric analyses were performed after sacrifice. RESULTS The BO/WH/AB204 group showed superior bone healing compared to the other 2 groups (BO and BO/WH). In the BO and BO/WH groups, new bone formation was found in the defect margin. However, in the BO/WH/AB204 group, new bone was observed on the upper and lower surfaces of the grafted area. The new bone area of the BO/WH/AB204 group at 4 weeks was significantly higher than that of the same group at 2 weeks. At 4 weeks, the total augmented area and material area in the BO/WH/AB204 group were significantly lower than the corresponding values at 2 weeks. CONCLUSIONS The BO/WH/AB204 group showed superior results of bone regeneration at 2 and 4 weeks compared to the BO and BO/WH groups. AB204 seems to play an important role in bone regeneration.
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Affiliation(s)
- Jung-Tae Lee
- Department of Periodontics, One-Stop Specialty Center, Seoul National University, Dental Hospital, Seoul, Korea
| | - Sungtae Kim
- Department of Periodontology, Dental Research Institute, Seoul National University School of Dentistry, Seoul, Korea.
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Yum H, Han HS, Lee JT, Cho YD, Kim S. Bone regeneration using activin A/BMP2 chimera (AB204) with collagen membrane in rats with calvarial defects. J Periodontal Implant Sci 2024; 54:309-321. [PMID: 38725424 PMCID: PMC11543331 DOI: 10.5051/jpis.2303820191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 12/05/2023] [Accepted: 01/05/2024] [Indexed: 11/07/2024] Open
Abstract
PURPOSE Collagen has long been recognized as an excellent carrier for growth factors, and membrane-type collagen has been widely applied in dentistry for guided bone regeneration. This study was conducted to examine the effects of an activin A/BMP2 chimera (AB204) combined with a collagen membrane (CM) on bone repair in a rat calvarial defect model. METHODS A unilateral calvarial defect measuring 5.0 mm was surgically created in 32 Sprague-Dawley rats. The rats were then randomly assigned to 1 of 4 groups, each consisting of 8 animals: control (untreated), CM (treated with a CM only), CM/bone morphogenetic protein 2 (BMP2) (treated with a CM and 1.0 μg of BMP2), and CM/AB204 (treated with a CM and 1.0 μg of AB204). Bone regeneration was evaluated using micro-computed tomography (CT) and histological analysis at 2 and 4 weeks following surgery. RESULTS Micro-CT analysis revealed that bone formation in the CM/BMP2 and CM/AB204 groups was superior to that observed in the control and CM groups at both 2 and 4 weeks postoperatively. BMP2 induced greater bone regeneration than AB204 at 2 weeks; however, AB204 resulted in a greater bone volume at 4 weeks, achieving the highest values recorded. No significant differences were found between the CM/BMP2 and CM/AB204 groups at either time point (P>0.05). On histological examination, new bone formation was evident in both CM/BMP2 and CM/AB204 groups. CONCLUSIONS Within the limitations of this study, the findings indicate that AB204 may enhance osteogenic potential when used in combination with CM for bone regeneration.
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Affiliation(s)
- Haeji Yum
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Seoul, Korea
| | - Hee-Seung Han
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Seoul, Korea
| | - Jung-Tae Lee
- One-Stop Specialty Center, Seoul National University, Dental Hospital, Seoul, Korea
| | - Young-Dan Cho
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Seoul, Korea.
| | - Sungtae Kim
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Seoul, Korea.
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Han HS, Lee JT, Cho YD, Kim S. The activin/BMP-2 chimera AB204 promotes periodontal tissue regeneration in a buccal dehiscence model: a pilot study. J Periodontal Implant Sci 2024; 54:322-335. [PMID: 38725427 PMCID: PMC11543333 DOI: 10.5051/jpis.2303600180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 01/23/2024] [Accepted: 03/09/2024] [Indexed: 11/07/2024] Open
Abstract
PURPOSE A combination of activin and bone morphogenetic protein-2 (BMP-2), termed AB204, has been shown to improve osteogenic potential with fewer side effects than BMP-2 alone. This study was performed to evaluate the effect of AB204 on periodontal tissue regeneration in a dog buccal dehiscence model. METHODS Buccal dehiscence defects were created on the maxillary premolars (P1, P2, and P3) of 6 mongrel dogs. After 5 weeks, the dogs were randomly assigned to 1 of 3 groups: the control, collagen matrix (CM), and CM/AB204 groups. Grafting procedures were then performed. The dogs were sacrificed 8 weeks after the grafting procedure, and volumetric and histological analyses were conducted. RESULTS The thickness of the buccal gingiva in the CM/AB204 group was greater than those in the other groups at 2 weeks (P<0.05). The ridge width in the AB204/CM group exceeded the width in the other groups at 4 and 8 weeks; however, the difference was not statistically significant. Histological analysis revealed that the CM/AB204 group demonstrated the formation of new bone surrounded by newly formed periodontal ligament and cementum (P=0.035). CONCLUSIONS The combined application of CM and AB204 shows promise in facilitating the regeneration of periodontal attachment, including the formation of new bone, cementum, and periodontal ligament.
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Affiliation(s)
- Hee-Seung Han
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Seoul, Korea
- Department of Periodontology, Korea University Anam Hospital, Seoul, Korea
| | - Jung-Tae Lee
- One-Stop Specialty Center, Seoul National University Dental Hospital, Seoul, Korea
| | - Young-Dan Cho
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Seoul, Korea.
| | - Sungtae Kim
- Department of Periodontology, School of Dentistry and Dental Research Institute, Seoul National University and Seoul National University Dental Hospital, Seoul, Korea.
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Broussolle T, Roux JP, Chapurlat R, Barrey C. Murine models of posterolateral spinal fusion: A systematic review. Neurochirurgie 2023; 69:101428. [PMID: 36871885 DOI: 10.1016/j.neuchi.2023.101428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 02/05/2023] [Accepted: 02/07/2023] [Indexed: 03/07/2023]
Abstract
BACKGROUND Rodent models are commonly used experimentally to assess treatment effectiveness in spinal fusion. Certain factors are associated with better fusion rates. The objectives of the present study were to report the protocols most frequently used, to evaluate factors known to positively influence fusion rate, and to identify new factors. METHOD A systematic literature search of PubMed and Web of Science found 139 experimental studies of posterolateral lumbar spinal fusion in rodent models. Data for level and location of fusion, animal strain, sex, weight and age, graft, decortication, fusion assessment and fusion and mortality rates were collected and analyzed. RESULTS The standard murine model for spinal fusion was male Sprague Dawley rats of 295g weight and 13 weeks' age, using decortication, with L4-L5 as fusion level. The last two criteria were associated with significantly better fusion rates. On manual palpation, the overall mean fusion rate in rats was 58% and the autograft mean fusion rate was 61%. Most studies evaluated fusion as a binary on manual palpation, and only a few used CT and histology. Average mortality was 3.03% in rats and 1.56% in mice. CONCLUSIONS These results suggest using a rat model, younger than 10 weeks and weighing more than 300 grams on the day of surgery, to optimize fusion rates, with decortication before grafting and fusing the L4-L5 level.
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Affiliation(s)
- T Broussolle
- Department of Spine Surgery, P. Wertheimer University Hospital, GHE, hospices civils de Lyon, université Claude-Bernard Lyon 1, Lyon, France; Inserm UMR 1033, université Claude-Bernard Lyon 1, Lyon, France.
| | - Jean-Paul Roux
- Inserm UMR 1033, université Claude-Bernard Lyon 1, Lyon, France
| | - R Chapurlat
- Inserm UMR 1033, université Claude-Bernard Lyon 1, Lyon, France
| | - C Barrey
- Department of Spine Surgery, P. Wertheimer University Hospital, GHE, hospices civils de Lyon, université Claude-Bernard Lyon 1, Lyon, France; Arts et métiers ParisTech, ENSAM, 151, boulevard de l'Hôpital, 75013 Paris, France
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Kang Y, Liu C, Wang M, Wang C, Yan YG, Wang WJ. A novel rat model of interbody fusion based on anterior lumbar corpectomy and fusion (ALCF). BMC Musculoskelet Disord 2021; 22:965. [PMID: 34794408 PMCID: PMC8603486 DOI: 10.1186/s12891-021-04822-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 10/26/2021] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Rats have been widely used as experimental animals when performing fundamental research because they are economical, rapidly reproducing, and heal quickly. While the rat interbody fusion model has been applied in basic studies, existing rat models generally have shortcomings, such as insufficiently simulating clinical surgery. The purpose of this study was to develop a novel rat model of interbody fusion which more closely represents clinical surgery. METHODS The internal fixation was designed based on physical measurements of the rats' lumbar spine. Then, ten rats divided into two groups (A and B) underwent anterior lumbar corpectomy and fusion of the L5 vertebrae. Groups A and B were sacrificed four and 8 weeks post-surgery, respectively. Micro-CT and histological examination were used to evaluate the model. Fusion rate, bone volume fraction (BV/TV), trabecular bone number (Tb.N), trabecular bone thickness (Tb.Th), and the area ratio of newly formed bone (NB) were calculated for quantitative analysis. RESULTS Based on the L5 body dimensions of individual rats, 3D-printed titanium cage of the appropriate size were printed. The operations were successfully completed in all ten rats, and X-ray confirmed that internal fixation was good without migration. Micro-CT suggested that fusion rates in group B (100%) were greater than group A (40%, P < 0.05). The BV/TV (B: 42.20 ± 10.50 vs. A: 29.02 ± 3.25, P < 0.05) and Tb.N (B: 4.66 ± 1.23 vs. A: 1.97 ± 0.40, P < 0.05) were greater in group B than A, and the Tb.Th in group B was lower than group A (B: 0.10 ± 0.04 vs. A: 0.15 ± 0.02, P < 0.05). Histomorphometry results demonstrated that the area ratio of NB in group B were greater than group A (B: 35.72 ± 12.80 vs. A: 12.36 ± 16.93, P < 0.05). CONCLUSION A rat interbody fusion model based on anterior lumbar corpectomy and fusion has successfully been constructed and verified. It could provide a new choice for fundamental research using animal models of spinal fusion.
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Affiliation(s)
- Yu Kang
- The First Affiliated Hospital, Department of Spine Surgery, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China
- Department of Orthopedicsity, The First Affiliated Hospital of Anhui Medical University, Hefei, 230000, Anhui, China
| | - Chao Liu
- The First Affiliated Hospital, Department of Spine Surgery, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China
| | - Ming Wang
- The First Affiliated Hospital, Department of Spine Surgery, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China
| | - Cheng Wang
- The First Affiliated Hospital, Department of Spine Surgery, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China.
| | - Yi-Guo Yan
- The First Affiliated Hospital, Department of Spine Surgery, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China.
| | - Wen-Jun Wang
- The First Affiliated Hospital, Department of Spine Surgery, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China.
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Lumbar interbody fusion: recent advances in surgical techniques and bone healing strategies. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2020; 30:22-33. [DOI: 10.1007/s00586-020-06596-0] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 08/26/2020] [Accepted: 09/05/2020] [Indexed: 12/31/2022]
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