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Liang W, Li Y, Ji Y, Kang R, Zhang K, Su X, Li J, Ji M, Wu T, Cao X, Chen J, Huo J. Exosomes derived from bone marrow mesenchymal stem cells induce the proliferation and osteogenic differentiation and regulate the inflammatory state in osteomyelitis in vitro model. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024:10.1007/s00210-024-03357-4. [PMID: 39168906 DOI: 10.1007/s00210-024-03357-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 08/02/2024] [Indexed: 08/23/2024]
Abstract
Chronic osteomyelitis is a chronic bone infection characterized by progressive osteonecrosis and dead bone formation, which is closely related to persistent infection and chronic inflammation. Exosomes derived from bone marrow-derived mesenchymal stem cells (BMSC) play an important role in bone tissue regeneration and the modulation of inflammatory processes. However, their role and mechanism of action in osteomyelitis have not been reported so far. This paper explores the potential effect of BMSC-derived exosomes on osteomyelitis in vitro model with the aim of providing a theoretical basis for the treatment of osteomyelitis in the future. In this study, exosomes were isolated and extracted from BMSCs and identified. MC3T3-E1 cells were treated with Staphylococcal protein A (SPA) to establish an in vitro model of osteomyelitis. Next, the effects of BMSC-derived exosomes on cell proliferation, apoptosis, angiogenesis, and autophagy in MC3T3-E1 cells treated with SPA were evaluated. Results showed that the proliferation ability of MC3T3-E1 cells increased after co-culture with BMSC-derived exosomes. Moreover, exosomes induced autophagy and osteogenic differentiation in MC3T3-E1 cells. The mRNA and protein levels of factors related to proliferation, differentiation, apoptosis, autophagy, and angiogenesis including β-Catenin, Runx2, Bcl-2, VEGFA, and Beclin-1 upregulated in SPA-treated MC3T3-E1 cells, whereas the levels of inflammatory cytokines including TNF-α, IL-1β, and IL-6 decreased in the supernatant. The results showed that exosomes derived from BMSCs may participate in the attenuation of osteomyelitis by inducing proliferation and osteogenic differentiation and regulating the inflammatory state in bone cells.
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Affiliation(s)
- Wei Liang
- Department of Orthopaedics, Taiyuan Hospital of Peking University First Hospital (Taiyuan Central Hospital), No. 1, East Sandao Lane, Jiefang Road, Taiyuan, 030000, Shanxi Province, China
| | - Yangui Li
- Department of Orthopaedics, Taiyuan Hospital of Peking University First Hospital (Taiyuan Central Hospital), No. 1, East Sandao Lane, Jiefang Road, Taiyuan, 030000, Shanxi Province, China
| | - Yihua Ji
- Department of Orthopaedics, Taiyuan Hospital of Peking University First Hospital (Taiyuan Central Hospital), No. 1, East Sandao Lane, Jiefang Road, Taiyuan, 030000, Shanxi Province, China
| | - Renjie Kang
- Department of Orthopaedics, Taiyuan Hospital of Peking University First Hospital (Taiyuan Central Hospital), No. 1, East Sandao Lane, Jiefang Road, Taiyuan, 030000, Shanxi Province, China
| | - Kaixi Zhang
- Department of Orthopaedics, Taiyuan Hospital of Peking University First Hospital (Taiyuan Central Hospital), No. 1, East Sandao Lane, Jiefang Road, Taiyuan, 030000, Shanxi Province, China
| | - Xueyuan Su
- Department of Orthopaedics, Taiyuan Hospital of Peking University First Hospital (Taiyuan Central Hospital), No. 1, East Sandao Lane, Jiefang Road, Taiyuan, 030000, Shanxi Province, China
| | - Jiangbo Li
- Department of Orthopaedics, Taiyuan Hospital of Peking University First Hospital (Taiyuan Central Hospital), No. 1, East Sandao Lane, Jiefang Road, Taiyuan, 030000, Shanxi Province, China
| | - Mingming Ji
- Department of Orthopaedics, Taiyuan Hospital of Peking University First Hospital (Taiyuan Central Hospital), No. 1, East Sandao Lane, Jiefang Road, Taiyuan, 030000, Shanxi Province, China
| | - Taiyong Wu
- Department of Orthopaedics, Taiyuan Hospital of Peking University First Hospital (Taiyuan Central Hospital), No. 1, East Sandao Lane, Jiefang Road, Taiyuan, 030000, Shanxi Province, China
| | - Xinjie Cao
- Department of Orthopaedics, Taiyuan Hospital of Peking University First Hospital (Taiyuan Central Hospital), No. 1, East Sandao Lane, Jiefang Road, Taiyuan, 030000, Shanxi Province, China
| | - Jianrui Chen
- Department of Orthopaedics, Taiyuan Hospital of Peking University First Hospital (Taiyuan Central Hospital), No. 1, East Sandao Lane, Jiefang Road, Taiyuan, 030000, Shanxi Province, China.
| | - Jianzhong Huo
- Department of Orthopaedics, Taiyuan Hospital of Peking University First Hospital (Taiyuan Central Hospital), No. 1, East Sandao Lane, Jiefang Road, Taiyuan, 030000, Shanxi Province, China.
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Song M, Deng M, Peng Z, Dai F, Wang Y, Shu W, Zhou X, Zhang J, Hou Y, Yu B. Granulocyte colony-stimulating factor mediates bone loss via the activation of IL-1β/JNK signaling pathway in murine Staphylococcus aureus-induced osteomyelitis. Int Immunopharmacol 2024; 141:112959. [PMID: 39163688 DOI: 10.1016/j.intimp.2024.112959] [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: 03/20/2024] [Revised: 08/13/2024] [Accepted: 08/14/2024] [Indexed: 08/22/2024]
Abstract
Staphylococcus aureus (S. aureus)-induced bone loss is a significant challenge in the treatment of osteomyelitis. Our previous study was the first to confirm that granulocyte colony-stimulating factor (G-CSF) mediates S. aureus-induced bone loss. However, the underlying mechanism remains unknown. The objective of this study was to elucidate this. We found G-CSF mediated BMSC senescence and increased IL-1β concentration of serum and bone marrow in mice after S. aureus infection. Furthermore, we demonstrated that G-CSF promoted the expression of IL1b in murine bone marrow-derived neutrophils. Notably, we identified that IL-1β mediated BMSC (bone marrow mesenchymal stromal cell) senescence in mice after S. aureus infection. Importantly, IL-1β neutralizing antibody effectively alleviated BMSC senescence and bone loss caused by S. aureus infection in mice. In terms of molecular mechanism, we found IL-1β induced BMSC senescence by JNK/P53 and JNK/BCL2 pathways. Collectively, G-CSF promotes IL-1β production which induces BMSC senescence via JNK/P53 and JNK/BCL2 pathways, leading to S. aureus-induced bone loss. This study identified novel targets for preventing and treating S. aureus-induced bone loss in osteomyelitis.
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Affiliation(s)
- Mingrui Song
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China; Guangdong Provincial Key Laboratory of Bone and Cartilage Regenerative Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Mingye Deng
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China; Guangdong Provincial Key Laboratory of Bone and Cartilage Regenerative Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Ziyue Peng
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China; Guangdong Provincial Key Laboratory of Bone and Cartilage Regenerative Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Fangfang Dai
- Huiqiao Medical Center, Nanfang Hospital of Southern Medical University, Guangzhou, China
| | - Yutian Wang
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China; Guangdong Provincial Key Laboratory of Bone and Cartilage Regenerative Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Wen Shu
- Department of Trauma Orthopedics, Liuzhou People's Hospital, Liuzhou, Guangxi, China
| | - Xuyou Zhou
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China; Guangdong Provincial Key Laboratory of Bone and Cartilage Regenerative Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Jinye Zhang
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China; Guangdong Provincial Key Laboratory of Bone and Cartilage Regenerative Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yilong Hou
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China.
| | - Bin Yu
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China.
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Shi X, Li M, Ni H, Wu Y, Li Y, Chen X, Xu Y. Integrative gene expression analysis and animal model reveal immune- and autophagy-related biomarkers in osteomyelitis. Immun Inflamm Dis 2024; 12:e1339. [PMID: 38990187 PMCID: PMC11238574 DOI: 10.1002/iid3.1339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 04/26/2024] [Accepted: 06/29/2024] [Indexed: 07/12/2024] Open
Abstract
BACKGROUND Osteomyelitis (OM) is recognized as a significant challenge in orthopedics due to its complex immune and inflammatory responses. The prognosis heavily depends on timely diagnosis, accurate classification, and assessment of severity. Thus, the identification of diagnostic and classification-related genes from an immunological standpoint is crucial for the early detection and tailored treatment of OM. METHODS Transcriptomic data for OM was sourced from the Gene Expression Omnibus (GEO) database, leading to the identification of autophagy- and immune-related differentially expressed genes (AIR-DEGs) through differential expression analysis. Diagnostic and classification models were subsequently developed. The CIBERSORT algorithm was utilized to examine immune cell infiltration in OM, and the relationship between OM clusters and various immune cells was explored. Key AIR-DEGs were further validated through the creation of OM animal models. RESULTS Analysis of the transcriptomic data revealed three AIR-DEGs that played a significant role in immune responses and pathways. Nomogram and receiver operating characteristic curve analyses were performed, demonstrating excellent diagnostic capability for differentiating between OM patients and healthy individuals, with an area under the curve of 0.814. An unsupervised clustering analysis discerned two unique patterns of autophagy- and immune-related genes, as well as gene patterns. Further exploration into immune infiltration exhibited notable variances across different subtypes, especially between OM cluster 1 and gene cluster A, highlighting their potential role in mitigating inflammatory responses by regulating immune activities. Moreover, the mRNA and protein expression levels of three AIR-DEGs in the animal model were aligned with those in the training and validation data sets. CONCLUSIONS From an immunological perspective, a diagnostic model was successfully developed, and two distinct clustering patterns were identified. These contributions offer a significant resource for the early detection and personalized immunotherapy of patients with OM.
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Affiliation(s)
- Xiangwen Shi
- Kunming Medical University, Kunming, China
- Laboratory of Yunnan Traumatology and Orthopedics Clinical Medical Center, Yunnan Orthopedics and Sports Rehabilitation Clinical Medical Research Center, Kunming, China
- Department of Orthopedic Surgery, 920th Hospital of Joint Logistics Support Force of PLA, Kunming, Yunnan, China
| | - Mingjun Li
- Laboratory of Yunnan Traumatology and Orthopedics Clinical Medical Center, Yunnan Orthopedics and Sports Rehabilitation Clinical Medical Research Center, Kunming, China
- Department of Orthopedic Surgery, 920th Hospital of Joint Logistics Support Force of PLA, Kunming, Yunnan, China
| | - Haonan Ni
- Orthopedic Department, First People's Hospital of Huzhou, First Affiliated Hospital of Huzhou University, Huzhou, China
| | - Yipeng Wu
- Kunming Medical University, Kunming, China
- Laboratory of Yunnan Traumatology and Orthopedics Clinical Medical Center, Yunnan Orthopedics and Sports Rehabilitation Clinical Medical Research Center, Kunming, China
- Department of Orthopedic Surgery, 920th Hospital of Joint Logistics Support Force of PLA, Kunming, Yunnan, China
| | - Yang Li
- Laboratory of Yunnan Traumatology and Orthopedics Clinical Medical Center, Yunnan Orthopedics and Sports Rehabilitation Clinical Medical Research Center, Kunming, China
- Department of Orthopedic Surgery, 920th Hospital of Joint Logistics Support Force of PLA, Kunming, Yunnan, China
| | - Xianjun Chen
- Department of Neurosurgery, Nanping First Hospital Affiliated to Fujian Medical University, Nanping, Fujian, China
| | - Yongqing Xu
- Laboratory of Yunnan Traumatology and Orthopedics Clinical Medical Center, Yunnan Orthopedics and Sports Rehabilitation Clinical Medical Research Center, Kunming, China
- Department of Orthopedic Surgery, 920th Hospital of Joint Logistics Support Force of PLA, Kunming, Yunnan, China
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Shi X, Ni H, Tang L, Li M, Wu Y, Xu Y. Comprehensive Gene Analysis Reveals Cuproptosis-Related Gene Signature Associated with M2 Macrophage in Staphylococcus aureus-Infected Osteomyelitis. J Inflamm Res 2024; 17:3057-3077. [PMID: 38770176 PMCID: PMC11104443 DOI: 10.2147/jir.s457414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 05/08/2024] [Indexed: 05/22/2024] Open
Abstract
Objective Osteomyelitis is a challenging disease in the field of bone infections, with its immune and molecular regulatory mechanisms still poorly understood. The aim of this study is to explore the value and potential mechanisms of cuproptosis-related genes (CRGs) in Staphylococcus aureus (S. aureus)-infected osteomyelitis from an immunological perspective. Methods Initially, three transcriptomic datasets from public databases were integrated and analyzed, and consistent expression of CRGs in S. aureus-infected osteomyelitis was identified. Subsequently, immune infiltration analysis was performed, and M2 macrophage-related CRGs (M2R-CRGs) were further identified. Their potential molecular mechanisms were evaluated using Gene Set Variation Analysis (GSVA) and Gene Set Enrichment Analysis (GSEA). Finally, distinct osteomyelitis subtypes and diagnostic models based on characteristic M2R-CRGs were constructed. Results Through correlation analysis with immune cell infiltration, three characteristic M2R-CRGs (SLC31A1, DLD, and MTF1) were identified. Further analysis using unsupervised clustering and immune microenvironment analysis indicated that cluster 1 might activate pro-inflammatory responses, while cluster 2 was shown to exhibit anti-inflammatory effects in osteomyelitis. Compared to Cluster A, Cluster B demonstrated higher levels and a greater diversity of immune cell infiltrations in CRG-related molecular patterns, suggesting a potential anti-inflammatory role in osteomyelitis. A diagnostic model for S. aureus-infected osteomyelitis, based on the three M2R-CRGs, was constructed, exhibiting excellent diagnostic performance and validated with an independent dataset. Significant upregulation in mRNA and protein expression levels of the three M2R-CRGs was observed in rat models of S. aureus-infected osteomyelitis, aligning with bioinformatic results. Conclusion The M2R-CRGs (SLC31A1, DLD, and MTF1) may be considered characteristic genes for early diagnosis and personalized immune therapy in patients with S. aureus-infected osteomyelitis.
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Affiliation(s)
- Xiangwen Shi
- Graduate School, Kunming Medical University, Kunming, People’s Republic of China
- Laboratory of Yunnan Traumatology and Orthopedics Clinical Medical Center, Yunnan Orthopedics and Sports Rehabilitation Clinical Medical Research Center, Department of Orthopedic Surgery, 920th Hospital of Joint Logistics Support Force of PLA, Kunming, People’s Republic of China
| | - Haonan Ni
- First People’s Hospital of Huzhou, the First affiliated Hospital of Huzhou University, Huzhou, People’s Republic of China
| | - Linmeng Tang
- Department of Radiology, the Second Affiliated Hospital of Kunming Medical University, Kunming, People’s Republic of China
| | - Mingjun Li
- Laboratory of Yunnan Traumatology and Orthopedics Clinical Medical Center, Yunnan Orthopedics and Sports Rehabilitation Clinical Medical Research Center, Department of Orthopedic Surgery, 920th Hospital of Joint Logistics Support Force of PLA, Kunming, People’s Republic of China
| | - Yipeng Wu
- Laboratory of Yunnan Traumatology and Orthopedics Clinical Medical Center, Yunnan Orthopedics and Sports Rehabilitation Clinical Medical Research Center, Department of Orthopedic Surgery, 920th Hospital of Joint Logistics Support Force of PLA, Kunming, People’s Republic of China
| | - Yongqing Xu
- First People’s Hospital of Huzhou, the First affiliated Hospital of Huzhou University, Huzhou, People’s Republic of China
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Periferakis A, Periferakis AT, Troumpata L, Dragosloveanu S, Timofticiuc IA, Georgatos-Garcia S, Scheau AE, Periferakis K, Caruntu A, Badarau IA, Scheau C, Caruntu C. Use of Biomaterials in 3D Printing as a Solution to Microbial Infections in Arthroplasty and Osseous Reconstruction. Biomimetics (Basel) 2024; 9:154. [PMID: 38534839 DOI: 10.3390/biomimetics9030154] [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: 01/26/2024] [Revised: 02/23/2024] [Accepted: 02/25/2024] [Indexed: 03/28/2024] Open
Abstract
The incidence of microbial infections in orthopedic prosthetic surgeries is a perennial problem that increases morbidity and mortality, representing one of the major complications of such medical interventions. The emergence of novel technologies, especially 3D printing, represents a promising avenue of development for reducing the risk of such eventualities. There are already a host of biomaterials, suitable for 3D printing, that are being tested for antimicrobial properties when they are coated with bioactive compounds, such as antibiotics, or combined with hydrogels with antimicrobial and antioxidant properties, such as chitosan and metal nanoparticles, among others. The materials discussed in the context of this paper comprise beta-tricalcium phosphate (β-TCP), biphasic calcium phosphate (BCP), hydroxyapatite, lithium disilicate glass, polyetheretherketone (PEEK), poly(propylene fumarate) (PPF), poly(trimethylene carbonate) (PTMC), and zirconia. While the recent research results are promising, further development is required to address the increasing antibiotic resistance exhibited by several common pathogens, the potential for fungal infections, and the potential toxicity of some metal nanoparticles. Other solutions, like the incorporation of phytochemicals, should also be explored. Incorporating artificial intelligence (AI) in the development of certain orthopedic implants and the potential use of AI against bacterial infections might represent viable solutions to these problems. Finally, there are some legal considerations associated with the use of biomaterials and the widespread use of 3D printing, which must be taken into account.
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Affiliation(s)
- Argyrios Periferakis
- Department of Physiology, The "Carol Davila" University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Akadimia of Ancient Greek and Traditional Chinese Medicine, 16675 Athens, Greece
- Elkyda, Research & Education Centre of Charismatheia, 17675 Athens, Greece
| | - Aristodemos-Theodoros Periferakis
- Department of Physiology, The "Carol Davila" University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Elkyda, Research & Education Centre of Charismatheia, 17675 Athens, Greece
| | - Lamprini Troumpata
- Department of Physiology, The "Carol Davila" University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Serban Dragosloveanu
- Department of Orthopaedics and Traumatology, The "Carol Davila" University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Department of Orthopaedics, "Foisor" Clinical Hospital of Orthopaedics, Traumatology and Osteoarticular TB, 021382 Bucharest, Romania
| | - Iosif-Aliodor Timofticiuc
- Department of Physiology, The "Carol Davila" University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Spyrangelos Georgatos-Garcia
- Tilburg Institute for Law, Technology, and Society (TILT), Tilburg University, 5037 DE Tilburg, The Netherlands
- Corvers Greece IKE, 15124 Athens, Greece
| | - Andreea-Elena Scheau
- Department of Radiology and Medical Imaging, Fundeni Clinical Institute, 022328 Bucharest, Romania
| | - Konstantinos Periferakis
- Akadimia of Ancient Greek and Traditional Chinese Medicine, 16675 Athens, Greece
- Pan-Hellenic Organization of Educational Programs (P.O.E.P.), 17236 Athens, Greece
| | - Ana Caruntu
- Department of Oral and Maxillofacial Surgery, "Carol Davila" Central Military Emergency Hospital, 010825 Bucharest, Romania
- Department of Oral and Maxillofacial Surgery, Faculty of Dental Medicine, Titu Maiorescu University, 031593 Bucharest, Romania
| | - Ioana Anca Badarau
- Department of Physiology, The "Carol Davila" University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Cristian Scheau
- Department of Physiology, The "Carol Davila" University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Department of Radiology and Medical Imaging, "Foisor" Clinical Hospital of Orthopaedics, Traumatology and Osteoarticular TB, 021382 Bucharest, Romania
| | - Constantin Caruntu
- Department of Physiology, The "Carol Davila" University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Department of Dermatology, "Prof. N.C. Paulescu" National Institute of Diabetes, Nutrition and Metabolic Diseases, 011233 Bucharest, Romania
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Pawłowski Ł, Bartmański M, Ronowska A, Banach-Kopeć A, Mania S, Cieślik BM, Mielewczyk-Gryń A, Karczewski J, Zieliński A. Cytocompatibility, antibacterial, and corrosion properties of chitosan/polymethacrylates and chitosan/poly(4-vinylpyridine) smart coatings, electrophoretically deposited on nanosilver-decorated titania nanotubes. J Biomed Mater Res B Appl Biomater 2024; 112:e35332. [PMID: 37728122 DOI: 10.1002/jbm.b.35332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 08/10/2023] [Accepted: 09/07/2023] [Indexed: 09/21/2023]
Abstract
The development of novel implants subjected to surface modification to achieve high osteointegration properties at simultaneous antimicrobial activity is a highly current problem. This study involved different surface treatments of titanium surface, mainly by electrochemical oxidation to produce a nanotubular oxide layer (TNTs), a subsequent electrochemical reduction of silver nitrate and decoration of a nanotubular surface with silver nanoparticles (AgNPs), and finally electrophoretic deposition (EPD) of a composite of chitosan (CS) and either polymethacrylate-based copolymer Eudragit E 100 (EE100) or poly(4-vinylpyridine) (P4VP) coating. The effects of each stage of this multi-step modification were examined in terms of morphology, roughness, wettability, corrosion resistance, coating-substrate adhesion, antibacterial properties, and osteoblast cell adhesion and proliferation. The results showed that the titanium surface formed nanotubes (inner diameter of 97 ± 12 nm, length of 342 ± 36 nm) subsequently covered with silver nanoparticles (with a diameter of 88 ± 8 nm). Further, the silver-decorated nanotubes were tightly coated with biopolymer films. Most of the applied modifications increased both the roughness and the surface contact angle of the samples. The deposition of biopolymer coatings resulted in reduced burst release of silver. The coated samples revealed potent antimicrobial activity against both Gram-positive and Gram-negative bacteria. Total elimination (99.9%) of E. coli was recorded for a sample with CS/P4VP coating. Cytotoxicity results using hFOB 1.19, a human osteoblast cell line, showed that after 3 days the tested modifications did not affect the cellular growth according to the titanium control. The proposed innovative multilayer antibacterial coatings can be successful for titanium implants as effective postoperative anti-inflammation protection.
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Affiliation(s)
- Łukasz Pawłowski
- Institute of Manufacturing and Materials Technology, Faculty of Mechanical Engineering and Ship Technology, Gdańsk University of Technology, Gdańsk, Poland
| | - Michał Bartmański
- Institute of Manufacturing and Materials Technology, Faculty of Mechanical Engineering and Ship Technology, Gdańsk University of Technology, Gdańsk, Poland
| | - Anna Ronowska
- Department of Laboratory Medicine, Medical University of Gdańsk, Gdańsk, Poland
| | - Adrianna Banach-Kopeć
- Department of Chemistry, Technology, and Biotechnology of Food, Faculty of Chemistry, Gdańsk University of Technology, Gdańsk, Poland
| | - Szymon Mania
- Department of Chemistry, Technology, and Biotechnology of Food, Faculty of Chemistry, Gdańsk University of Technology, Gdańsk, Poland
| | - Bartłomiej Michał Cieślik
- Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology, Gdańsk, Poland
| | - Aleksandra Mielewczyk-Gryń
- Institute of Nanotechnology and Materials Engineering, Faculty of Applied Physics and Mathematics, and Advanced Materials Centre, Gdańsk University of Technology, Gdańsk, Poland
| | - Jakub Karczewski
- Institute of Nanotechnology and Materials Engineering, Faculty of Applied Physics and Mathematics, and Advanced Materials Centre, Gdańsk University of Technology, Gdańsk, Poland
| | - Andrzej Zieliński
- Institute of Manufacturing and Materials Technology, Faculty of Mechanical Engineering and Ship Technology, Gdańsk University of Technology, Gdańsk, Poland
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Loro A, Fulvio F, Alt V. Treatment of bone infections in children in low-income countries - A practical guideline based on clinical cases. Injury 2023; 54:111066. [PMID: 37856924 DOI: 10.1016/j.injury.2023.111066] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Accepted: 09/24/2023] [Indexed: 10/21/2023]
Abstract
In low-income countries (LIC), the management of bone infections is a huge challenge. A high number of patients are in the pediatric age group. Children and adolescents exhibit good bone healing potential offering treatment options that mainly rely on the biological response of the infected bone. The purpose of this article is to highlight treatment options for these patients in LIC, which is based on clinical cases that illustrate the principles of the treatment, focusing on bone reaction and healing potential. First, identification of emergency cases is of importance. Sepsis of the patient due to bone infections is a life-threatening disease that requires immediate surgical attention with abscess incision. It should be tailored to the surgeon's experience and local conditions to avoid unwanted complications, such as excessive bleeding, fracture or bone loss. In non-septic patients, uncomplicated cases should be distinguished from complicated cases as the first might often require only abscess incision, particularly in small children, without any other major surgical intervention. Biomechanical stability and bone formation capacity, soft tissue conditions and joint involvement are decisive factors differentiating uncomplicated from complicated cases. Central treatment column is the immobilization of the infected bone with simple methods, such as plaster of Paris, braces or external fixation. This is intended to provide sufficient stability to allow for new bone formation that subsequently downsizes the infection site and that can bridge previously infected non-union sites or bone defects. In most cases, antibiotic treatment is not performed as antibiotics are not available or affordable. Severe soft tissue defects remain a major challenge as microvascular surgical experience is often required for reliable coverage, for which referral to one of the very few specialized centers is recommended. Major bone defects should also be treated in centers with sufficient expertise for bone reconstruction procedures. Regular follow-ups are important to ensure healing and to avoid aggravation of the disease. Encouraging success rates can be achieved by these treatment principles. However, it should not be forgotten that poverty in these countries, including limited access to health care, remains one of the world's most important problems.
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Affiliation(s)
- Antonio Loro
- Orthopedic Department, CoRSU Rehabilitation Hospital, Kisubi, Uganda
| | | | - Volker Alt
- Department of Trauma Surgery, University Hospital Regensburg, Regensburg, Germany.
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Mi B, Xiong Y, Zha K, Cao F, Zhou W, Abbaszadeh S, Ouyang L, Liao Y, Hu W, Dai G, Zhao Z, Feng Q, Shahbazi MA, Liu G. Immune homeostasis modulation by hydrogel-guided delivery systems: a tool for accelerated bone regeneration. Biomater Sci 2023; 11:6035-6059. [PMID: 37522328 DOI: 10.1039/d3bm00544e] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/01/2023]
Abstract
Immune homeostasis is delicately mediated by the dynamic balance between effector immune cells and regulatory immune cells. Local deviations from immune homeostasis in the microenvironment of bone fractures, caused by an increased ratio of effector to regulatory cues, can lead to excessive inflammatory conditions and hinder bone regeneration. Therefore, achieving effective and localized immunomodulation of bone fractures is crucial for successful bone regeneration. Recent research has focused on developing localized and specific immunomodulatory strategies using local hydrogel-based delivery systems. In this review, we aim to emphasize the significant role of immune homeostasis in bone regeneration, explore local hydrogel-based delivery systems, discuss emerging trends in immunomodulation for enhancing bone regeneration, and address the limitations of current delivery strategies along with the challenges of clinical translation.
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Affiliation(s)
- Bobin Mi
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China.
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
| | - Yuan Xiong
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China.
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
| | - Kangkang Zha
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China.
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
| | - Faqi Cao
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China.
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
| | - Wu Zhou
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China.
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
| | - Samin Abbaszadeh
- Department of Biomedical Engineering, University Medical Center Groningen, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Lizhi Ouyang
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China.
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
| | - Yuheng Liao
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China.
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
| | - Weixian Hu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China.
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
| | - Guandong Dai
- Department of Orthopedic Surgery, Pingshan District People's Hospital of Shenzhen, Pingshan General Hospital of Southern Medical University, Shenzhen 518118, China
| | - Zhiming Zhao
- Department of Orthopedics, Suizhou Hospital, Hubei University of Medicine, Suizhou 441300, China
| | - Qian Feng
- Key Laboratory of Biorheological Science and Technology, Ministry of Education College of Bioengineering, Chongqing University, Chongqing 400044, China.
| | - Mohammad-Ali Shahbazi
- Department of Biomedical Engineering, University Medical Center Groningen, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
- W.J. Kolff Institute for Biomedical Engineering and Materials Science, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands.
| | - Guohui Liu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China.
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
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9
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Choppa VSR, Kim WK. A Review on Pathophysiology, and Molecular Mechanisms of Bacterial Chondronecrosis and Osteomyelitis in Commercial Broilers. Biomolecules 2023; 13:1032. [PMID: 37509068 PMCID: PMC10377700 DOI: 10.3390/biom13071032] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 06/15/2023] [Accepted: 06/20/2023] [Indexed: 07/30/2023] Open
Abstract
Modern day broilers have a great genetic potential to gain heavy bodyweights with a huge metabolic demand prior to their fully mature ages. Moreover, this made the broilers prone to opportunistic pathogens which may enter the locomotory organs under stress causing bacterial chondronecrosis and osteomyelitis (BCO). Such pathogenic colonization is further accelerated by microfractures and clefts that are formed in the bones due to rapid growth rate of the broilers along with ischemia of blood vessels. Furthermore, there are several pathways which alter bone homeostasis like acute phase response, and intrinsic and extrinsic cell death pathways. In contrast, all the affected birds may not exhibit clinical lameness even with the presence of lameness associated factors causing infection. Although Staphylococcus, E. coli, and Enterococcus are considered as common bacterial pathogens involved in BCO, but there exist several other non-culturable bacteria. Any deviation from maintaining a homeostatic environment in the gut might lead to bacterial translocation through blood followed by proliferation of pathogenic bacteria in respective organs including bones. It is important to alleviate dysbiosis of the blood which is analogous to dysbiosis in the gut. This can be achieved by supplementing pro, pre, and synbiotics which helps in providing a eubiotic environment abating the bacterial translocation that was studied to the incidence of BCO. This review focused on potential and novel biomarkers, pathophysiological mechanism, the economic significance of BCO, immune mechanisms, and miscellaneous factors causing BCO. In addition, the role of gut microbiomes along with their diversity and cell culture models from compact bones of chicken in better understanding of BCO were explored.
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Affiliation(s)
| | - Woo Kyun Kim
- Department of Poultry Science, University of Georgia, Athens, GA 30602, USA
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10
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Choi YS, Kim YH, An HM, Bae SK, Lee YK. Efficacy of Silver Nanoparticles-Loaded Bone Cement against an MRSA Induced-Osteomyelitis in a Rat Model. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:medicina59040811. [PMID: 37109771 PMCID: PMC10146363 DOI: 10.3390/medicina59040811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/12/2023] [Accepted: 04/17/2023] [Indexed: 04/29/2023]
Abstract
Background and Objectives: The purpose of this study was to assess the cytotoxicity and antibacterial effects of AgNP-impregnated Tetracalcium phosphate-dicalcium phosphate dihydrate (TTCP-DCPD). Materials and Methods: Using in vitro experiments, the cytotoxicity of AgNP-impregnated TTCP-DCPD against fibroblasts and osteocytes was assessed in terms of cell viability by water-soluble tetrazolium salt assay. To assess antibacterial effects, a disc diffusion test was used; osteomyelitis was induced first in vivo, by injection of methicillin-resistant Staphylococcus aureus into the tibia of rats. AgNP-impregnated TTCP-DCPD bone cement was then applied at various silver concentrations for 3 or 12 weeks. Antibacterial effects were assessed by culturing and reverse transcription-polymerase chain reaction (RT-PCR). For histological observation, the bone tissues were stained using hematoxylin and eosin. Results: Cell viability was decreased by the impregnated bone cement but did not differ according to AgNP concentration. The diameter of the growth-inhibited zone of MRSA was between 4.1 and 13.3 mm on the disks treated with AgNP, indicating antimicrobial effects. In vivo, the numbers of bacterial colonies were reduced in the 12-week treatment groups compared to the 3-week treatment groups. The groups treated with a higher (10×) dose of AgNP (G2-G5) showed a tendency of lower bacterial colony counts compared to the group without AgNP (G1). The PCR analysis results showed a tendency of decreased bacterial gene expression in the AgNP-impregnated TTCP-DCPD groups (G2-G5) compared to the group without AgNP (G1) at 3 and 12 weeks. In the H&E staining, the degree of inflammation and necrosis of the AgNP-impregnated TTCP-DCPD groups (G2-G5) showed a tendency to be lower at 3 and 12 weeks compared to the control group. Our results suggest that AgNP-impregnated TTCP-DCPD cement has antimicrobial effects. Conclusions: This study indicates that AgNP-impregnated TTCP-DCPD bone cement could be considered to treat osteomyelitis.
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Affiliation(s)
- Young Suk Choi
- Department of Biology, Soonchunhyang University, 22, Soonchunhyang-ro, Asan-si 31538, Chungcheoungnam-do, Republic of Korea
- Department of Orthopedic Surgery, Soonchunhyang University Bucheon Hospital, 170, Jomaru-ro, Wonmi-gu, Bucheon-si 14584, Gyeonggi-do, Republic of Korea
| | - Young Hwan Kim
- Department of Orthopedic Surgery, Soonchunhyang University Bucheon Hospital, 170, Jomaru-ro, Wonmi-gu, Bucheon-si 14584, Gyeonggi-do, Republic of Korea
| | - Hye Min An
- Department of Orthopedic Surgery, Soonchunhyang University Bucheon Hospital, 170, Jomaru-ro, Wonmi-gu, Bucheon-si 14584, Gyeonggi-do, Republic of Korea
- Department of Medical Sciences, Soonchunhyang University, 22, Soonchunhyang-ro, Asan-si 31538, Chungcheoungnam-do, Republic of Korea
| | - Sung Kyoung Bae
- Department of Orthopedic Surgery, Soonchunhyang University Bucheon Hospital, 170, Jomaru-ro, Wonmi-gu, Bucheon-si 14584, Gyeonggi-do, Republic of Korea
- Department of Medical Sciences, Soonchunhyang University, 22, Soonchunhyang-ro, Asan-si 31538, Chungcheoungnam-do, Republic of Korea
| | - Young Koo Lee
- Department of Orthopedic Surgery, Soonchunhyang University Bucheon Hospital, 170, Jomaru-ro, Wonmi-gu, Bucheon-si 14584, Gyeonggi-do, Republic of Korea
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11
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Huang S, Zhong Y, Fu Y, Zheng X, Feng Z, Mo A. Graphene and its derivatives: "one stone, three birds" strategy for orthopedic implant-associated infections. Biomater Sci 2023; 11:380-399. [PMID: 36453143 DOI: 10.1039/d2bm01507b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Orthopedic implants provide an avascular surface for microbial attachment and biofilm formation, impeding the entry of immune cells and the diffusion of antibiotics. The above is an important cause of dental and orthopedic implant-associated infection (IAI). For the prevention and treatment of IAI, the drawbacks of antibiotic resistance and surgical treatment are increasingly apparent. Due to their outstanding biological properties such as biocompatibility, immunomodulatory effects, and antibacterial properties, graphene-based nanomaterials (GBNs) have been applied to bone tissue engineering to deal with IAI, and in particular have great potential application in drug/gene carriers, multi-functional platforms, and coating forms. Here we review the latest research progress and achievements in GBNs for the prevention and treatment of IAI, mainly including their biomedical applications for antibacterial and immunomodulation effects, and for inducing osteogenesis. Furthermore, the biosafety of graphene family materials in bone tissue regeneration and the feasibility of clinical application are critically analyzed and discussed.
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Affiliation(s)
- Si Huang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu 610041, China. .,Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Yongjin Zhong
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu 610041, China. .,Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Yu Fu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu 610041, China. .,Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Xiaofei Zheng
- Stomatology Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Zeru Feng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu 610041, China. .,Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Anchun Mo
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Sichuan University, Chengdu 610041, China. .,Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
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12
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Aguilera-Correa JJ, Gisbert-Garzarán M, Mediero A, Fernández-Aceñero MJ, de-Pablo-Velasco D, Lozano D, Esteban J, Vallet-Regí M. Antibiotic delivery from bone-targeted mesoporous silica nanoparticles for the treatment of osteomyelitis caused by methicillin-resistant Staphylococcus aureus. Acta Biomater 2022; 154:608-625. [PMID: 36341887 DOI: 10.1016/j.actbio.2022.10.039] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 10/13/2022] [Accepted: 10/19/2022] [Indexed: 12/14/2022]
Abstract
Osteomyelitis is a hard-to-treat infection of the bone and bone marrow that is mainly caused by Staphylococcus aureus, with an increasing incidence of methicillin-resistant S. aureus (MRSA). Owing to the aggressiveness of these bacteria in colonizing and destroying the bone, systemic antibiotic treatments fail to eradicate the infection. Instead, it normally entails surgery to remove the dead or infected bone. In this work, we report bone-targeted mesoporous silica nanoparticles for the treatment of osteomyelitis. The nanoparticles have been engineered with a functional gelatine/colistin coating able to hamper premature release from the mesopores while effectively disaggregating the bacterial biofilm. Because antibiotic resistance is a global emergency, we have designed two sets of identical nanoparticles, carrying each of them a clinically relevant antibiotic, that have demonstrated to have synergistic effect. The bone-targeted nanoparticles have been thoroughly evaluated in vitro and in vivo, obtaining a notable reduction of the amount of bacteria in the bone in just 24 h after only one dose, and paving the way for localized, nanoparticle-mediated treatment of MRSA-caused osteomyelitis. STATEMENT OF SIGNIFICANCE: In this work, we propose the use of bone-targeted mesoporous silica nanoparticles to address S. aureus-caused osteomyelitis that render synergistic therapeutic effect via multidrug delivery. Because the bacterial biofilm is responsible for an aggressive surgical approach and prolonged antibiotic treatment, the nanoparticles have been functionalized with a functional coating able to both disaggregate the biofilm, hamper premature antibiotic release and protect the intact bone. These engineered nanoparticles are able to effectively target bone tissue both in vitro and in vivo, showing high biocompatibility and elevated antibacterial effect.
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Affiliation(s)
- J J Aguilera-Correa
- Departamento de Química en Ciencias Farmacéuticas, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Hospital 12 de Octubre i+12, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain; CIBER de Enfermedades Infecciosas (CIBERINFEC), 28029 Madrid, Spain
| | - M Gisbert-Garzarán
- Departamento de Química en Ciencias Farmacéuticas, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Hospital 12 de Octubre i+12, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain
| | - A Mediero
- Bone and Joint Unit, IIS- Fundación Jimenez Diaz, UAM, Avenida Reyes Católicos, 2 28037 Madrid, Spain
| | | | | | - D Lozano
- Departamento de Química en Ciencias Farmacéuticas, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Hospital 12 de Octubre i+12, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain
| | - J Esteban
- CIBER de Enfermedades Infecciosas (CIBERINFEC), 28029 Madrid, Spain; Clinical Microbiology Department, IIS-Fundación Jiménez Diaz, UAM, Avenida Reyes Católicos, 2 28037 Madrid, Spain.
| | - M Vallet-Regí
- Departamento de Química en Ciencias Farmacéuticas, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Hospital 12 de Octubre i+12, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain; CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain.
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13
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Li Y, Sun S, Wen C, Zhong J, Jiang Q. Effect of Enterococcus faecalis OG1RF on human calvarial osteoblast apoptosis. BMC Oral Health 2022; 22:279. [PMID: 35804353 PMCID: PMC9264677 DOI: 10.1186/s12903-022-02295-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 06/13/2022] [Indexed: 11/24/2022] Open
Abstract
Background Enterococcus faecalis is a dominant pathogen in the root canals of teeth with persistent apical periodontitis (PAP), and osteoblast apoptosis contributes to imbalanced bone remodelling in PAP. Here, we investigated the effect of E. faecalis OG1RF on apoptosis in primary human calvarial osteoblasts. Specifically, the expression of apoptosis-related genes and the role of anti-apoptotic and pro-apoptotic members of the BCL-2 family were examined. Methods Primary human calvarial osteoblasts were incubated with E. faecalis OG1RF at multiplicities of infection corresponding to infection time points. Flow cytometry, terminal deoxynucleotidyl transferase dUTP nick end labelling (TUNEL) assay, caspase-3/-8/-9 activity assay, polymerase chain reaction (PCR) array, and quantitative real-time PCR were used to assess osteoblast apoptosis. Results E. faecalis infection increased the number of early- and late-phase apoptotic cells and TUNEL-positive cells, decreased the mitochondrial membrane potential (ΔΨm), and activated the caspase-3/-8/-9 pathway. Moreover, of all 84 apoptosis-related genes in the PCR array, the expression of 16 genes was upregulated and that of four genes was downregulated in the infected osteoblasts. Notably, the mRNA expression of anti-apoptotic BCL2 was downregulated, whereas that of the pro-apoptotic BCL2L11, HRK, BIK, BMF, NOXA, and BECN1 and anti-apoptotic BCL2A1 was upregulated. Conclusions E. faecalis OG1RF infection triggered apoptosis in human calvarial osteoblasts, and BCL-2 family members acted as regulators of osteoblast apoptosis. Therefore, BCL-2 family members may act as potential therapeutic targets for persistent apical periodontitis.
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Affiliation(s)
- Yang Li
- Department of Endodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, 510182, China
| | - Shuyu Sun
- Department of Endodontics, Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Cheng Wen
- Department of Endodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, 510182, China
| | - Jialin Zhong
- Department of Endodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, 510182, China
| | - Qianzhou Jiang
- Department of Endodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, 510182, China.
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14
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METTL3 mediates osteoblast apoptosis by regulating endoplasmic reticulum stress during LPS-induced inflammation. Cell Signal 2022; 95:110335. [DOI: 10.1016/j.cellsig.2022.110335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 03/21/2022] [Accepted: 04/14/2022] [Indexed: 11/17/2022]
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15
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Jiang C, Lin Y, Shan H, Xia W, Pan C, Wang N, Zhou L, Gao Y, Zhou Z, Yu X. miR-146a Protects against Staphylococcus aureus-Induced Osteomyelitis by Regulating Inflammation and Osteogenesis. ACS Infect Dis 2022; 8:918-927. [PMID: 35410468 DOI: 10.1021/acsinfecdis.1c00459] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Osteomyelitis is a Staphylococcus aureus-caused bone infection. In this study, the effects of miR-146a on osteomyelitis were evaluated. Using the osteoblast cell model and S. aureus-induced osteomyelitis mice model, we monitored the miR-146 expression and explored the effects of miR-146a on cell proliferation of osteoblasts, bone remodeling, osteoclastogenesis, inflammatory cytokine production, and bacterial burden. Upregulated miR-146a was found in mice with S. aureus-induced osteomyelitis. miR-146a attenuated S. aureus-induced cell loss of osteoblasts, rescued the expression of osteogenic markers, altered the bone remodeling, and inhibited inflammatory cytokine production and osteoclastogenesis. miR-146a knockout mice had higher S. aureus burden. In conclusion, miR-146a protects against S. aureus-induced osteomyelitis by regulating inflammation and osteogenesis.
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Affiliation(s)
- Chaolai Jiang
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai 200233, China
| | - Yiwei Lin
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai 200233, China
| | - Haojie Shan
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai 200233, China
| | - Wenyang Xia
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai 200233, China
| | - Chenhao Pan
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai 200233, China
| | - Nan Wang
- Department of Emergency, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Lihui Zhou
- Department of Orthopaedic Surgery, Xiangshan First People’s Hospital, Ningbo 315700, Zhejiang, China
| | - Youshui Gao
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai 200233, China
| | - Zubin Zhou
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai 200233, China
| | - Xiaowei Yu
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai 200233, China
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16
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Mendelsohn DH, Schnabel K, Mamilos A, Sossalla S, Pabel S, Duerr GD, Keller K, Schmitt VH, Barsch F, Walter N, Wong RMY, El Khassawna T, Niedermair T, Alt V, Rupp M, Brochhausen C. Structural Analysis of Mitochondrial Dynamics-From Cardiomyocytes to Osteoblasts: A Critical Review. Int J Mol Sci 2022; 23:4571. [PMID: 35562962 PMCID: PMC9101187 DOI: 10.3390/ijms23094571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 04/11/2022] [Accepted: 04/15/2022] [Indexed: 12/04/2022] Open
Abstract
Mitochondria play a crucial role in cell physiology and pathophysiology. In this context, mitochondrial dynamics and, subsequently, mitochondrial ultrastructure have increasingly become hot topics in modern research, with a focus on mitochondrial fission and fusion. Thus, the dynamics of mitochondria in several diseases have been intensively investigated, especially with a view to developing new promising treatment options. However, the majority of recent studies are performed in highly energy-dependent tissues, such as cardiac, hepatic, and neuronal tissues. In contrast, publications on mitochondrial dynamics from the orthopedic or trauma fields are quite rare, even if there are common cellular mechanisms in cardiovascular and bone tissue, especially regarding bone infection. The present report summarizes the spectrum of mitochondrial alterations in the cardiovascular system and compares it to the state of knowledge in the musculoskeletal system. The present paper summarizes recent knowledge regarding mitochondrial dynamics and gives a short, but not exhaustive, overview of its regulation via fission and fusion. Furthermore, the article highlights hypoxia and its accompanying increased mitochondrial fission as a possible link between cardiac ischemia and inflammatory diseases of the bone, such as osteomyelitis. This opens new innovative perspectives not only for the understanding of cellular pathomechanisms in osteomyelitis but also for potential new treatment options.
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Affiliation(s)
- Daniel H. Mendelsohn
- Institute of Pathology, University Regensburg, 93053 Regensburg, Germany; (D.H.M.); (K.S.); (A.M.); (T.N.)
- Central Biobank Regensburg, University Regensburg, University Hospital Regensburg, 93053 Regensburg, Germany
- Department of Trauma Surgery, University Medical Centre Regensburg, 93053 Regensburg, Germany; (N.W.); (V.A.); (M.R.)
| | - Katja Schnabel
- Institute of Pathology, University Regensburg, 93053 Regensburg, Germany; (D.H.M.); (K.S.); (A.M.); (T.N.)
- Central Biobank Regensburg, University Regensburg, University Hospital Regensburg, 93053 Regensburg, Germany
| | - Andreas Mamilos
- Institute of Pathology, University Regensburg, 93053 Regensburg, Germany; (D.H.M.); (K.S.); (A.M.); (T.N.)
| | - Samuel Sossalla
- Department of Internal Medicine II, University Hospital Regensburg, 93053 Regensburg, Germany; (S.S.); (S.P.)
| | - Steffen Pabel
- Department of Internal Medicine II, University Hospital Regensburg, 93053 Regensburg, Germany; (S.S.); (S.P.)
| | - Georg Daniel Duerr
- Department of Cardiovascular Surgery, University Medical Center Mainz (Johannes Gutenberg-University Mainz), 55131 Mainz, Germany;
| | - Karsten Keller
- Department of Cardiology, Cardiology I, University Medical Center Mainz (Johannes Gutenberg-University Mainz), 55131 Mainz, Germany; (K.K.); (V.H.S.)
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz (Johannes Gutenberg-University Mainz), 55131 Mainz, Germany
- Department of Sports Medicine, Medical Clinic VII, University Hospital Heidelberg, 69120 Heidelberg, Germany
| | - Volker H. Schmitt
- Department of Cardiology, Cardiology I, University Medical Center Mainz (Johannes Gutenberg-University Mainz), 55131 Mainz, Germany; (K.K.); (V.H.S.)
- German Center for Cardiovascular Research (DZHK), Partner Site Rhine Main, 55131 Mainz, Germany
| | - Friedrich Barsch
- Institute for Exercise and Occupational Medicine, Faculty of Medicine, Medical Center, University of Freiburg, 79106 Freiburg, Germany;
| | - Nike Walter
- Department of Trauma Surgery, University Medical Centre Regensburg, 93053 Regensburg, Germany; (N.W.); (V.A.); (M.R.)
| | - Ronald Man Yeung Wong
- Department of Orthopaedics and Traumatology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China;
| | - Thaqif El Khassawna
- Department of Experimental Trauma Surgery, Justus-Liebig-University Giessen, 35390 Giessen, Germany;
| | - Tanja Niedermair
- Institute of Pathology, University Regensburg, 93053 Regensburg, Germany; (D.H.M.); (K.S.); (A.M.); (T.N.)
- Central Biobank Regensburg, University Regensburg, University Hospital Regensburg, 93053 Regensburg, Germany
| | - Volker Alt
- Department of Trauma Surgery, University Medical Centre Regensburg, 93053 Regensburg, Germany; (N.W.); (V.A.); (M.R.)
| | - Markus Rupp
- Department of Trauma Surgery, University Medical Centre Regensburg, 93053 Regensburg, Germany; (N.W.); (V.A.); (M.R.)
| | - Christoph Brochhausen
- Institute of Pathology, University Regensburg, 93053 Regensburg, Germany; (D.H.M.); (K.S.); (A.M.); (T.N.)
- Central Biobank Regensburg, University Regensburg, University Hospital Regensburg, 93053 Regensburg, Germany
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17
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O'Donnell L, Hill EC, Anderson AS, Edgar HJH. A biological approach to adult sex differences in skeletal indicators of childhood stress. AMERICAN JOURNAL OF BIOLOGICAL ANTHROPOLOGY 2022; 177:381-401. [PMID: 36787691 DOI: 10.1002/ajpa.24424] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 08/01/2021] [Accepted: 09/24/2021] [Indexed: 05/05/2023]
Abstract
OBJECTIVES In previous work examining the etiology of cribra orbitalia (CO) and porotic hyperostosis (PH) in a contemporary juvenile mortality sample, we noted that males had higher odds of having CO lesions than females. Here, we examine potential reasons for this pattern in greater detail. Four non-mutually exclusive mechanisms could explain the observed sex differences: (1) sex-biased mortality; (2) sexual dimorphism in immune responses; (3) sexual dimorphism in bone turnover; or (4) sexual dimorphism in marrow conversion. SUBJECTS AND METHODS The sample consists of postmortem computed tomography scans and autopsy reports, field reports, and limited medical records of 488 individuals from New Mexico (203 females; 285 males) aged between 0.5 and 15 years. We used Kaplan-Meier survival analysis, predicted probabilities, and odds ratios to test each mechanism. RESULTS Males do not have lower survival probabilities than females, and we find no indications of sex differences in immune response. Overall, males have a higher probability of having CO or PH lesions than females. CONCLUSIONS All results indicate that lesion formation in juveniles is influenced by some combination of sex differences in the pace of red-yellow conversion of the bone marrow and bone turnover. The preponderance of males with CO and PH likely speaks to the potential for heightened osteoblastic activity in males. We find no support for the hypotheses that sex biases in mortality or immune responses impacted lesion frequency in this sample. Sex differences in biological processes experienced by children may affect lesion formation and lesion expression in later life.
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Affiliation(s)
- Lexi O'Donnell
- Department of Sociology and Anthropology, University of Mississippi, Oxford, Mississippi, USA
| | - Ethan C Hill
- Division of Physical Therapy, Department of Orthopaedics and Rehabilitation, University of New Mexico School of Medicine, Albuquerque, New Mexico, USA
| | - Amy S Anderson
- Department of Anthropology, University of California, Santa Barbara, California, USA
| | - Heather Joy Hecht Edgar
- Department of Anthropology, University of New Mexico, Albuquerque, New Mexico, USA
- Office of the Medical Investigator, University of New Mexico, Albuquerque, New Mexico, USA
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Aguilera-Correa J, Gisbert-Garzarán M, Mediero A, Carias-Cálix R, Jiménez-Jiménez C, Esteban J, Vallet-Regí M. Arabic gum plus colistin coated moxifloxacin-loaded nanoparticles for the treatment of bone infection caused by Escherichia coli. Acta Biomater 2022; 137:218-237. [PMID: 34653694 DOI: 10.1016/j.actbio.2021.10.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/20/2021] [Accepted: 10/07/2021] [Indexed: 12/16/2022]
Abstract
Osteomyelitis is an inflammatory process of bone and bone marrow that may even lead to patient death. Even though this disease is mainly caused by Gram-positive organisms, the proportion of bone infections caused by Gram-negative bacteria, such as Escherichia coli, has significantly increased in recent years. In this work, mesoporous silica nanoparticles have been employed as platform to engineer a nanomedicine able to eradicate E. coli- related bone infections. For that purpose, the nanoparticles have been loaded with moxifloxacin and further functionalized with Arabic gum and colistin (AG+CO-coated MX-loaded MSNs). The nanosystem demonstrated high affinity toward E. coli biofilm matrix, thanks to AG coating, and marked antibacterial effect because of the bactericidal effect of moxifloxacin and the disaggregating effect of colistin. AG+CO-coated MX-loaded MSNs were able to eradicate the infection developed on a trabecular bone in vitro and showed pronounced antibacterial efficacy in vivo against an osteomyelitis provoked by E. coli. Furthermore, AG+CO-coated MX-loaded MSNs were shown to be essentially non-cytotoxic with only slight effect on cell proliferation and mild hepatotoxicity, which might be attributed to the nature of both antibiotics. In view of these results, these nanoparticles may be considered as a promising treatment for bone infections caused by enterobacteria, such as E. coli, and introduce a general strategy against bone infections based on the implementation of antibiotics with different but complementary activity into a single nanocarrier. STATEMENT OF SIGNIFICANCE: In this work, we propose a methodology to address E.coli bone infections by using moxifloxacin-loaded mesoporous silica nanoparticles coated with Arabic gum containing colistin (AG+CO-coated MX-loaded MSNs). The in vitro evaluation of this nanosystem demonstrated high affinity toward E. coli biofilm matrix thanks to the Arabic gum coating, a disaggregating and antibacterial effect of colistin, and a remarkable antibiofilm action because of the bactericidal ability of moxifloxacin and colistin. This anti-E. coli capacity of AG+CO-coated MX-loaded MSNs was brought out in an in vivo rabbit model of osteomyelitis where the nanosystem was able to eradicate more than 90% of the bacterial load within the infected bone.
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Liu H, Zhong W, Zhang X, Lin D, Wu J. Nanomedicine as a promising strategy for the theranostics of infectious diseases. J Mater Chem B 2021; 9:7878-7908. [PMID: 34611689 DOI: 10.1039/d1tb01316e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Infectious diseases caused by bacteria, viruses, and fungi and their global spread pose a great threat to human health. The 2019 World Health Organization report predicted that infection-related mortality will be similar to cancer mortality by 2050. Particularly, the global cumulative numbers of the recent outbreak of coronavirus disease (COVID-19) have reached 110.7 million cases and over 2.4 million deaths as of February 23, 2021. Moreover, the crisis of these infectious diseases exposes the many problems of traditional diagnosis, treatment, and prevention, such as time-consuming and unselective detection methods, the emergence of drug-resistant bacteria, serious side effects, and poor drug delivery. There is an urgent need for rapid and sensitive diagnosis as well as high efficacy and low toxicity treatments. The emergence of nanomedicine has provided a promising strategy to greatly enhance detection methods and drug treatment efficacy. Owing to their unique optical, magnetic, and electrical properties, nanoparticles (NPs) have great potential for the fast and selective detection of bacteria, viruses, and fungi. NPs exhibit remarkable antibacterial activity by releasing reactive oxygen species and metal ions, exerting photothermal effects, and causing destruction of the cell membrane. Nano-based delivery systems can further improve drug permeability, reduce the side effects of drugs, and prolong systemic circulation time and drug half-life. Moreover, effective drugs against COVID-19 are still lacking. Recently, nanomedicine has shown great potential to accelerate the development of safe and novel anti-COVID-19 drugs. This article reviews the fundamental mechanisms and the latest developments in the treatment and diagnosis of bacteria, viruses, and fungi and discusses the challenges and perspectives in the application of nanomedicine.
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Affiliation(s)
- Hengyu Liu
- Department of Hematology, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen 518107, China.
| | - Wenhao Zhong
- Department of Hematology, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen 518107, China.
| | - Xinyu Zhang
- Department of Hematology, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen 518107, China.
| | - Dongjun Lin
- Department of Hematology, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen 518107, China.
| | - Jun Wu
- Department of Hematology, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen 518107, China. .,School of Biomedical Engineering, Sun Yat-sen University, Guangzhou 510006, China
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Jiao J, Zhang S, Qu X, Yue B. Recent Advances in Research on Antibacterial Metals and Alloys as Implant Materials. Front Cell Infect Microbiol 2021; 11:693939. [PMID: 34277473 PMCID: PMC8283567 DOI: 10.3389/fcimb.2021.693939] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 06/21/2021] [Indexed: 11/13/2022] Open
Abstract
Implants are widely used in orthopedic surgery and are gaining attention of late. However, their use is restricted by implant-associated infections (IAI), which represent one of the most serious and dangerous complications of implant surgeries. Various strategies have been developed to prevent and treat IAI, among which the closest to clinical translation is designing metal materials with antibacterial functions by alloying methods based on existing materials, including titanium, cobalt, tantalum, and biodegradable metals. This review first discusses the complex interaction between bacteria, host cells, and materials in IAI and the mechanisms underlying the antibacterial effects of biomedical metals and alloys. Then, their applications for the prevention and treatment of IAI are highlighted. Finally, new insights into their clinical translation are provided. This review also provides suggestions for further development of antibacterial metals and alloys.
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Affiliation(s)
- Juyang Jiao
- Department of Bone and Joint Surgery, Department of Orthopaedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Shutao Zhang
- Department of Bone and Joint Surgery, Department of Orthopaedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xinhua Qu
- Department of Bone and Joint Surgery, Department of Orthopaedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Bing Yue
- Department of Bone and Joint Surgery, Department of Orthopaedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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21
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Choi YS, Ham DS, Lim JY, Lee YK. Validation of the Osteomyelitis Induced by Methicillin-Resistant Staphylococcus aureus (MRSA) on Rat Model with Calvaria Defect. Tissue Eng Regen Med 2021; 18:671-683. [PMID: 34165776 DOI: 10.1007/s13770-021-00340-5] [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: 04/09/2020] [Revised: 03/21/2021] [Accepted: 03/25/2021] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Osteomyelitis resulting from bacterial strains, such as methicillin-resistant Staphylococcus aureus (MRSA) that are resistant to multiple drugs, brings further clinical challenges. There is currently no model of osteomyelitis induced by MRSA using rats with calvaria defects. So, We induced osteomyelitis in rat models with the calvaria bone defect. METHODS The rats were randomly divided into six groups according to inoculation dose levels, which ranged from 6 × 100 to 6 × 105 CFU/5 µl. Bone tissues were retrieved from all rats used in the study and assessed using histology, microbiology, and radiobiology 4 weeks after surgery to evaluate the relationship between inoculation dose and infectivity. RESULTS In Histological results, high levels of inflammatory responses, bone necrosis, and bacteria were observed in treatment groups G3 to G5. In IHC staining, high levels of cox-2 expression were observed in treatment groups G3. Microbiological observations also indicated that significantly higher numbers of CFUs were found in G3 to G5. In radiography results, the bone mineral density in G3 to G5 was significantly higher than in the control group, G1, and G2. Our results indicate that an inoculating dose of 6 × 103 CFU/5 μl is sufficient to induce the development of osteomyelitis in rat models. CONCLUSION This study suggests that the minimum dose (6 × 103 CFU/5 µl) can induce osteomyelitis in calvaria rat model. This can offer information and ability of more accurately modeling osteomyelitis and simulating the challenge of osteomyelitis treat.
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Affiliation(s)
- Young Suk Choi
- Department of Biology, Soonchunhyang University, Soonchunhyang-ro, Sinchang-myeon, Asan-si, Chungcheongnam-do, 31538, Republic of Korea.,Department of Orthopedic Surgery, Soonchunhyang University Bucheon Hospital, 4 Jung-Dong, Wonmi-Gu, Bucheon-Si, Gyeonggi-Do, 14584, Republic of Korea
| | - Dae Sung Ham
- Department of Orthopedic Surgery, Soonchunhyang University Bucheon Hospital, 4 Jung-Dong, Wonmi-Gu, Bucheon-Si, Gyeonggi-Do, 14584, Republic of Korea.,Department of Medical Sciences, Soonchunhyang University, Soonchunhyang-ro, Sinchang-myeon, Asan-si, Chungcheongnam-do, 31538, Republic of Korea
| | - Ji Yun Lim
- Department of Orthopedic Surgery, Soonchunhyang University Bucheon Hospital, 4 Jung-Dong, Wonmi-Gu, Bucheon-Si, Gyeonggi-Do, 14584, Republic of Korea.,Department of Medical Sciences, Soonchunhyang University, Soonchunhyang-ro, Sinchang-myeon, Asan-si, Chungcheongnam-do, 31538, Republic of Korea
| | - Young Koo Lee
- Department of Orthopedic Surgery, Soonchunhyang University Bucheon Hospital, 4 Jung-Dong, Wonmi-Gu, Bucheon-Si, Gyeonggi-Do, 14584, Republic of Korea.
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22
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Koehne T, Zustin J, Amling M, Friedrich RE. Radiological and Histopathological Features of Internal Tooth Resorption. In Vivo 2021; 34:1875-1882. [PMID: 32606158 DOI: 10.21873/invivo.11983] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 03/24/2020] [Accepted: 03/28/2020] [Indexed: 12/24/2022]
Abstract
BACKGROUND Internal root resorption is an endodontic disease characterized by progressive resorption of dentin from the inside of the pulp chamber. It is a comparatively rare finding in the permanent dentition, and the underlying pathology is not fully understood. CASE REPORT A 45-year-old patient was referred to our Department for the evaluation of the lower right canine and the upper left wisdom tooth. Pulp sensitivity tests, cone-beam tomography, and magnetic resonance imaging were used to determine the extent of lesions of the affected teeth. The teeth were subsequently extracted due the extent of the lesions. The same was the case for the upper right canine, which developed a severe internal resorption 10 months later. Micro-computed tomography of the extracted teeth revealed that all lesions had a well-defined border with no evidence of sclerosis or hypomineralization. Pulp stones were evident inside the pulp chamber. Ground sectioning of the upper right canine revealed pulp necrosis and an acute infection that had gradually moved in the apical direction. Large multi-nucleated resorbing cells were found on the dentin surface. Importantly, the apical half of the pulp exhibited comparatively normal tissue without substantial inflammatory changes. Decalcified histology of the upper left wisdom tooth demonstrated a completely different histopathological appearance characterized by chronically inflamed granulation tissue with pseudoepitheliomatous hyperplasia and massive bacterial colonization. CONCLUSION Our analyses demonstrate that internal root resorption is a multifaceted dental disease with considerable variability in the rate of the underlying inflammatory changes. Oral surgeons should take this into consideration when evaluating the need for extraction of teeth with internal root resorption.
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Affiliation(s)
- Till Koehne
- Department of Orthodontics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Jozef Zustin
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Michael Amling
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Reinhard E Friedrich
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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Li Y, Ling J, Jiang Q. Inflammasomes in Alveolar Bone Loss. Front Immunol 2021; 12:691013. [PMID: 34177950 PMCID: PMC8221428 DOI: 10.3389/fimmu.2021.691013] [Citation(s) in RCA: 76] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 05/18/2021] [Indexed: 12/18/2022] Open
Abstract
Bone remodeling is tightly controlled by osteoclast-mediated bone resorption and osteoblast-mediated bone formation. Fine tuning of the osteoclast-osteoblast balance results in strict synchronization of bone resorption and formation, which maintains structural integrity and bone tissue homeostasis; in contrast, dysregulated bone remodeling may cause pathological osteolysis, in which inflammation plays a vital role in promoting bone destruction. The alveolar bone presents high turnover rate, complex associations with the tooth and periodontium, and susceptibility to oral pathogenic insults and mechanical stress, which enhance its complexity in host defense and bone remodeling. Alveolar bone loss is also involved in systemic bone destruction and is affected by medication or systemic pathological factors. Therefore, it is essential to investigate the osteoimmunological mechanisms involved in the dysregulation of alveolar bone remodeling. The inflammasome is a supramolecular protein complex assembled in response to pattern recognition receptors and damage-associated molecular patterns, leading to the maturation and secretion of pro-inflammatory cytokines and activation of inflammatory responses. Pyroptosis downstream of inflammasome activation also facilitates the clearance of intracellular pathogens and irritants. However, inadequate or excessive activity of the inflammasome may allow for persistent infection and infection spreading or uncontrolled destruction of the alveolar bone, as commonly observed in periodontitis, periapical periodontitis, peri-implantitis, orthodontic tooth movement, medication-related osteonecrosis of the jaw, nonsterile or sterile osteomyelitis of the jaw, and osteoporosis. In this review, we present a framework for understanding the role and mechanism of canonical and noncanonical inflammasomes in the pathogenesis and development of etiologically diverse diseases associated with alveolar bone loss. Inappropriate inflammasome activation may drive alveolar osteolysis by regulating cellular players, including osteoclasts, osteoblasts, osteocytes, periodontal ligament cells, macrophages, monocytes, neutrophils, and adaptive immune cells, such as T helper 17 cells, causing increased osteoclast activity, decreased osteoblast activity, and enhanced periodontium inflammation by creating a pro-inflammatory milieu in a context- and cell type-dependent manner. We also discuss promising therapeutic strategies targeting inappropriate inflammasome activity in the treatment of alveolar bone loss. Novel strategies for inhibiting inflammasome signaling may facilitate the development of versatile drugs that carefully balance the beneficial contributions of inflammasomes to host defense.
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Affiliation(s)
- Yang Li
- Department of Endodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, China
| | - Junqi Ling
- Department of Endodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, China.,Guangdong Province Key Laboratory of Stomatology, Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Qianzhou Jiang
- Department of Endodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou, China
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24
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Yang CN, Lin SK, Kok SH, Wang HW, Lee YL, Shun CT, Chi CW, Yang H, Hong CY. The possible role of sirtuin 5 in the pathogenesis of apical periodontitis. Oral Dis 2020; 27:1766-1774. [PMID: 33191606 DOI: 10.1111/odi.13723] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 10/07/2020] [Accepted: 11/07/2020] [Indexed: 12/12/2022]
Abstract
OBJECTIVES We investigated the relation between expression of sirtuin 5 (SIRT5) in osteoblastic cells and progression of apical periodontitis. The role of SIRT5 in hypoxia-induced reactive oxygen species (ROS) formation and osteoblast apoptosis was also examined. MATERIALS AND METHODS Progression of rat apical periodontitis was monitored by conventional radiography and microcomputed tomography. SIRT5 and oxidative stress biomarker 8-OHdG in bone-lining cells were assessed by immunohistochemistry. Terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling was used to demonstrate apoptosis. In primary human osteoblasts cultured under hypoxia, Western blot was used to analyze SIRT5 expression and cleavage of pro-caspase 3 and poly(ADP-ribose) polymerase (PARP). SIRT5 was overexpressed through lentiviral technique. ROS formation and mitochondrial membrane potential changes were assessed by MitoSOX-Red and JC-1 fluorescence, respectively. Immunofluorescence microscope was used to evaluate mitochondrial release of cytochrome c. RESULTS In rat apical periodontitis, disease progression was accompanied by decreased expression of SIRT5, increased oxidative stress, and enhanced apoptosis in bone-lining cells. SIRT5 was suppressed in cultured osteoblasts under hypoxia. SIRT5 overexpression ameliorated hypoxia-enhanced ROS formation, mitochondrial depolarization, cytochrome c leakage, activation of caspase-3, and PARP fragmentation. CONCLUSIONS SIRT5 is able to alleviate hypoxia-enhanced osteoblast apoptosis. SIRT5 augmentation may have therapeutic potential for apical periodontitis.
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Affiliation(s)
- Cheng-Ning Yang
- Department of Dentistry, School of Dentistry, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Sze-Kwan Lin
- Department of Dentistry, School of Dentistry, College of Medicine, National Taiwan University, Taipei, Taiwan.,Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan
| | - Sang-Heng Kok
- Department of Dentistry, School of Dentistry, College of Medicine, National Taiwan University, Taipei, Taiwan.,Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan
| | - Han-Wei Wang
- Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan.,Graduate Institute of Clinical Dentistry, National Taiwan University, Taipei, Taiwan
| | - Yuan-Ling Lee
- Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan.,Graduate Institute of Clinical Dentistry, National Taiwan University, Taipei, Taiwan
| | - Chia-Tung Shun
- Department of Forensic Medicine and Pathology, National Taiwan University Hospital, Taipei, Taiwan
| | - Chih-Wen Chi
- Department of Dentistry, National Taiwan University Hospital, Hsin-Chu Branch, Taiwan
| | - Hsiang Yang
- Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan
| | - Chi-Yuan Hong
- Department of Dentistry, School of Dentistry, College of Medicine, National Taiwan University, Taipei, Taiwan.,Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan.,College of Bio-Resources and Agriculture, National Taiwan University, Taipei, Taiwan
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Chen Y, Lu J, Li S, Zhang C, Yang Q, Hu B, Zhou C, Hong J, Jiang G, Yan S. Carnosol attenuates RANKL-induced osteoclastogenesis in vitro and LPS-induced bone loss. Int Immunopharmacol 2020; 89:106978. [PMID: 33039968 DOI: 10.1016/j.intimp.2020.106978] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 09/01/2020] [Accepted: 09/03/2020] [Indexed: 02/02/2023]
Abstract
Osteolysis is characterized by the imbalance of bone remodeling triggered by excessive activation of osteoclasts, which ultimately leads to pathological bone destruction. Diseases caused by overactive osteoclasts, such as osteolysis around the prosthesis, periodontitis and osteoporosis, are clinically common but lack effective treatment. Therefore, exploring regimens that could specifically impair the formation and function of osteoclasts has become a breakthrough in the treatment of these diseases. Carnosol is a natural phenolic diterpene with anti-inflammatory, antibacterial, anti-tumor and antioxidant properties. In this study, we found that carnosol can impede RANKL-induced osteoclastogenesis via modulating the activation of NF-κb and JNK signaling pathways in vitro. Additionally, we confirmed that carnosol could alleviate bone loss in amurine model of LPS-induced inflammatory bone erosion in vivo. Thence, these findings demonstrate that carnosol may be a potentially effective regent for the treatment of osteoclast-related disorders.
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Affiliation(s)
- Yazhou Chen
- Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China; Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China
| | - Jinwei Lu
- Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China; Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China
| | - Sihao Li
- Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China; Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China
| | - Caihua Zhang
- Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China; Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China
| | - Quanming Yang
- Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China; Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China
| | - Bin Hu
- Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China; Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China
| | - Chenhe Zhou
- Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China; Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China
| | - Jianqiao Hong
- Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China; Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China
| | - Guangyao Jiang
- Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China; Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China
| | - Shigui Yan
- Department of Orthopedic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China; Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China.
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Huang Y, Jia Z, Xu Y, Qin M, Feng S. Selenium protects against LPS-induced MC3T3-E1 cells apoptosis through modulation of microRNA-155 and PI3K/Akt signaling pathways. Genet Mol Biol 2020; 43:e20190153. [PMID: 32511663 PMCID: PMC7278977 DOI: 10.1590/1678-4685-gmb-2019-0153] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Accepted: 04/06/2020] [Indexed: 12/15/2022] Open
Abstract
Bone infection or osteomyelitis is usually a complication of inflammation-related traumatic bone injury. Selenium has been shown to have potential cytoprotective effects and the ability to reduce oxidative stress and apoptotic events in osteomyelitis, but the exact mechanism remains unclear. Here, we used LPS-induced apoptotic MC3T3-E1 cells and aimed to confirm selenium's protective effect on cell apoptosis as well as to investigate the underlying mechanisms of this role. Our investigation confirmed selenium-mediated inhibition of LPS-induced cell apoptosis and ROS accumulation in MC3T3-E1 cells. Upon selenium treatment, the bcl-2 levels were upregulated, while the levels of Bax and cyto-C were down-regulated. Furthermore, these effects were accompanied by the suppression of miR-155 and the phosphorylation of protein kinase B (Akt). A more in-depth study demonstrated that LY294002 (a specific inhibitor of PI3K), abolished the selenium-mediated cytoprotective effect of MC3T3-E1 cells against LPS-induced injury and down-regulation of miR-155. In general, these results demonstrated that selenium exerts a cytoprotective effect by attenuating cell apoptosis and oxidative damage via a PI3K/Akt/miR-155-dependent mechanism.
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Affiliation(s)
- Yan Huang
- Department of Orthopaedics, Hunan Provincial People's Hospital, Changsha, Hunan Province, P.R. China
| | - Zhen Jia
- Department of Orthopaedics, Hunan Provincial People's Hospital, Changsha, Hunan Province, P.R. China
| | - YongQiang Xu
- Department of Orthopaedics, Hunan Provincial People's Hospital, Changsha, Hunan Province, P.R. China
| | - MeiLan Qin
- Department of Orthopaedics, Hunan Provincial People's Hospital, Changsha, Hunan Province, P.R. China
| | - SiYin Feng
- Department of Orthopaedics, Hunan Provincial People's Hospital, Changsha, Hunan Province, P.R. China
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Ciobanu G, Harja M. Bismuth-Doped Nanohydroxyapatite Coatings on Titanium Implants for Improved Radiopacity and Antimicrobial Activity. NANOMATERIALS 2019; 9:nano9121696. [PMID: 31783686 PMCID: PMC6955781 DOI: 10.3390/nano9121696] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 11/23/2019] [Accepted: 11/25/2019] [Indexed: 12/17/2022]
Abstract
This study aims to present the possibility to obtain bismuth-doped nanohydroxyapatite coatings on the surface of the titanium implants by using a solution-derived process according to an established biomimetic methodology. The bioactivity of the titanium surface was increased by an alkali-thermal treatment. Then, under biomimetic conditions, the titanium surface was coated with a Bi-doped nanohydroxyapatite layer by using a modified supersaturated calcification solution (SCS) containing a bismuth salt. The apatite deposits were analyzed by scanning electron microscopy coupled with X-ray analysis (SEM-EDX), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and digital X-rays radiography method. The results indicate that the Bi-doped nanohydroxyapatite coatings on titanium surface were produced. These coatings exhibit a good radiopacity, thus enhancing their applications in dental and orthopedic fields. Additionally, the Bi-doped nanohydroxyapatite coatings show significant antimicrobial activity against Escherichia coli and Staphylococcus aureus bacteria.
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Affiliation(s)
- Gabriela Ciobanu
- Correspondence: (G.C.); (M.H.); Tel.: +40-0741025163 (G.C.); +40-0747909645 (M.H.)
| | - Maria Harja
- Correspondence: (G.C.); (M.H.); Tel.: +40-0741025163 (G.C.); +40-0747909645 (M.H.)
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Zhang L, Du Y, Wen Y, Ma M, Cheng S, Cheng B, Li P, Qi X, Liang C, Liu L, Liang X, Guo X, Zhang F. Integrating transcriptome-wide association study and mRNA expression profiling identified candidate genes and pathways associated with osteomyelitis. Scand J Rheumatol 2019; 49:131-136. [PMID: 31657276 DOI: 10.1080/03009742.2019.1653492] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Objective: Osteomyelitis (OM) is an acute or chronic inflammatory process, characterized by severe inflammation and progressive bone destruction. Limited efforts have been made to explore the genetic basis of OM.Method: The genome-wide association study data set of OM was obtained from the UK Biobank. A transcriptome-wide association study (TWAS) of OM was conducted by the FUSION tool using the gene expression reference weights of lymphocytes and blood. The OM-associated genes identified by TWAS were subjected to gene ontology (GO) enrichment analysis to explore OM-related gene sets. The TWAS results of OM were finally compared with a genome-wide mRNA expression profiling of OM to detect common genes and gene sets.Results: TWAS of OM detected 86 genes for lymphocytes and 387 genes for blood. Comparing the genes identified by TWAS and mRNA expression profiling detected eight common genes for OM, including VWF (pTWAS = 0.0030, pmRNA = 3.44 × 10-9), CCDC50 (pTWAS = 0.0130, pmRNA = 0.0003), and TPD52 (pTWAS = 0.0180, pmRNA = 1 × 10-6). GO analysis of the genes identified by TWAS detected multiple OM-associated GO terms, e.g. peroxisomal matrix (pTWAS = 0.0082), extracellular exosome (pTWAS = 0.0248), and monooxygenase activity (pTWAS = 0.0040). Further comparing the GO results of TWAS and mRNA expression profiling detected one common GO term, named extracellular exosome (pTWAS = 0.0248, pmRNA = 0.0027).Conclusion: This integrative study of TWAS and mRNA expression profiling detected multiple candidate genes and GO terms for OM. Our results provide novel clues for understanding the pathogenesis of OM.
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Affiliation(s)
- L Zhang
- School of Public Health, Health Science Center, Xi'an Jiaotong University, Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, Xi'an, PR China
| | - Y Du
- School of Public Health, Health Science Center, Xi'an Jiaotong University, Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, Xi'an, PR China
| | - Y Wen
- School of Public Health, Health Science Center, Xi'an Jiaotong University, Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, Xi'an, PR China
| | - M Ma
- School of Public Health, Health Science Center, Xi'an Jiaotong University, Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, Xi'an, PR China
| | - S Cheng
- School of Public Health, Health Science Center, Xi'an Jiaotong University, Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, Xi'an, PR China
| | - B Cheng
- School of Public Health, Health Science Center, Xi'an Jiaotong University, Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, Xi'an, PR China
| | - P Li
- School of Public Health, Health Science Center, Xi'an Jiaotong University, Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, Xi'an, PR China
| | - X Qi
- School of Public Health, Health Science Center, Xi'an Jiaotong University, Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, Xi'an, PR China
| | - C Liang
- School of Public Health, Health Science Center, Xi'an Jiaotong University, Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, Xi'an, PR China
| | - L Liu
- School of Public Health, Health Science Center, Xi'an Jiaotong University, Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, Xi'an, PR China
| | - X Liang
- School of Public Health, Health Science Center, Xi'an Jiaotong University, Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, Xi'an, PR China
| | - X Guo
- School of Public Health, Health Science Center, Xi'an Jiaotong University, Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, Xi'an, PR China
| | - F Zhang
- School of Public Health, Health Science Center, Xi'an Jiaotong University, Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, Xi'an, PR China
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Croes M, van der Wal BCH, Vogely HC. Impact of Bacterial Infections on Osteogenesis: Evidence From In Vivo Studies. J Orthop Res 2019; 37:2067-2076. [PMID: 31329305 PMCID: PMC6771910 DOI: 10.1002/jor.24422] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Accepted: 07/15/2019] [Indexed: 02/04/2023]
Abstract
The clinical impact of bacterial infections on bone regeneration has been incompletely quantified and documented. As a result, controversy exists about the optimal treatment strategy to maximize healing of a contaminated defect. Animal models are extremely useful in this respect, as they can elucidate how a bacterial burden influences quantitative healing of various types of defects relative to non-infected controls. Moreover, they may demonstrate how antibacterial treatment and/or bone grafting techniques facilitate the osteogenic response in the harsh environment of a bacterial infection. Finally, it a well-known contradiction that osteomyelitis is characterized by uncontrolled bone remodeling and bone loss, but at the same time, it can be associated with excessive new bone apposition. Animal studies can provide a better understanding of how osteolytic and osteogenic responses are related to each other during infection. This review discusses the in vivo impact of bacterial infection on osteogenesis by addressing the following questions (i) How does osteomyelitis affect the radiographic bone appearance? (ii) What is the influence of bacterial infection on histological bone healing? (iii) How do bacterial infections affect quantitative bone healing? (iv) What is the effect of antibacterial treatment on the healing outcome during infection? (v) What is the efficacy of osteoinductive proteins in infected bones? (vi) What is the balance between the osteoclastic and osteoblastic response during bacterial infections? (vii) What is the mechanism of the observed pro-osteogenic response as observed in osteomyelitis? © 2019 The Authors. Journal of Orthopaedic Research© published by Wiley Periodicals, Inc. on behalf of Orthopaedic Research Society. J Orthop Res 37:2067-2076, 2019.
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Affiliation(s)
- Michiel Croes
- Department of OrthopaedicsUniversity Medical Center UtrechtHeidelberglaan 1003508 GAUtrechtThe Netherlands
| | - Bart C. H. van der Wal
- Department of OrthopaedicsUniversity Medical Center UtrechtHeidelberglaan 1003508 GAUtrechtThe Netherlands
| | - H. Charles Vogely
- Department of OrthopaedicsUniversity Medical Center UtrechtHeidelberglaan 1003508 GAUtrechtThe Netherlands
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Seebach E, Kubatzky KF. Chronic Implant-Related Bone Infections-Can Immune Modulation be a Therapeutic Strategy? Front Immunol 2019; 10:1724. [PMID: 31396229 PMCID: PMC6664079 DOI: 10.3389/fimmu.2019.01724] [Citation(s) in RCA: 101] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 07/09/2019] [Indexed: 12/14/2022] Open
Abstract
Chronic implant-related bone infections are a major problem in orthopedic and trauma-related surgery with severe consequences for the affected patients. As antibiotic resistance increases in general and because most antibiotics have poor effectiveness against biofilm-embedded bacteria in particular, there is a need for alternative and innovative treatment approaches. Recently, the immune system has moved into focus as the key player in infection defense and bone homeostasis, and the targeted modulation of the host response is becoming an emerging field of interest. The aim of this review was to summarize the current knowledge of impaired endogenous defense mechanisms that are unable to prevent chronicity of bone infections associated with a prosthetic or osteosynthetic device. The presence of foreign material adversely affects the immune system by generating a local immune-compromised environment where spontaneous clearance of planktonic bacteria does not take place. Furthermore, the surface structure of the implant facilitates the transition of bacteria from the planktonic to the biofilm stage. Biofilm formation on the implant surface is closely linked to the development of a chronic infection, and a misled adaption of the immune system makes it impossible to effectively eliminate biofilm infections. The interaction between the immune system and bone cells, especially osteoclasts, is extensively studied in the field of osteoimmunology and this crosstalk further aggravates the course of bone infection by shifting bone homeostasis in favor of bone resorption. T cells play a major role in various chronic diseases and in this review a special focus was therefore set on what is known about an ineffective T cell response. Myeloid-derived suppressor cells (MDSCs), anti-inflammatory macrophages, regulatory T cells (Tregs) as well as osteoclasts all suppress immune defense mechanisms and negatively regulate T cell-mediated immunity. Thus, these cells are considered to be potential targets for immune therapy. The success of immune checkpoint inhibition in cancer treatment encourages the transfer of such immunological approaches into treatment strategies of other chronic diseases. Here, we discuss whether immune modulation can be a therapeutic tool for the treatment of chronic implant-related bone infections.
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Affiliation(s)
- Elisabeth Seebach
- Department of Infectious Diseases, Medical Microbiology and Hygiene, Heidelberg University Hospital, Heidelberg, Germany
| | - Katharina F Kubatzky
- Department of Infectious Diseases, Medical Microbiology and Hygiene, Heidelberg University Hospital, Heidelberg, Germany
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Bedogni A, Bettini G, Bedogni G, Basso D, Gatti D, Valisena S, Brunello A, Sorio M, Berno T, Giannini S, Navaglia F, Plebani M, Nocini PF, Blandamura S, Saia G, Bertoldo F. Is vitamin D deficiency a risk factor for osteonecrosis of the jaw in patients with cancer? A matched case-control study. J Craniomaxillofac Surg 2019; 47:1203-1208. [PMID: 30929994 DOI: 10.1016/j.jcms.2019.03.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 01/11/2019] [Accepted: 03/06/2019] [Indexed: 01/07/2023] Open
Abstract
PURPOSE A previous case-control histomorphometric study showed higher odds of osteomalacia in patients with bisphosphonate-related osteonecrosis of the jaw (BRONJ). Vitamin D deficiency causes osteomalacia and may therefore be involved in the pathogenesis of BRONJ. The present case-control study aimed at testing such hypothesis. MATERIALS AND METHODS BRONJ+ and BRONJ- patients treated with bisphosphonates were matched by sex (same) and age (within 5 years). Serum 25-hydroxy-vitamin D (25-OH-D), parathyroid hormone, bone alkaline phosphatase, total procollagen type 1 amino-terminal propeptide, carboxy-terminal collagen crosslinks, Dickkopf WNT signaling pathway inhibitor 1 and sclerostin were measured. RESULTS The main outcome was vitamin D deficiency defined as 25-OH-D < 50 nmol/l. A total of 51 BRONJ+ and 73 BRONJ- patients were studied. The frequency (95% CI) of vitamin D deficiency was 59% (45%-72%) in BRONJ+ and 62% (48%-75%) in BRONJ- patients. This amounts to a difference of -3% (-22%-16%, p = 0.77) for BRONJ+ patients. Serum 25-hydroxy-vitamin D and parathyroid hormone were similar in BRONJ+ and BRONJ- patients. Among the bone metabolism markers, only sclerostin differed between the two groups, being higher in BRONJ+ patients. CONCLUSION The present matched case-control study suggests that vitamin D deficiency is not a risk factor for BRONJ.
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Affiliation(s)
- Alberto Bedogni
- Unit of Maxillofacial Surgery, Department of Neuroscience-DNS, University of Padua, Padua, Italy.
| | - Giordana Bettini
- Unit of Maxillofacial Surgery, Department of Neuroscience-DNS, University of Padua, Padua, Italy
| | - Giorgio Bedogni
- Clinical Epidemiology Unit, Liver Research Center, Basovizza, Trieste, Italy
| | - Daniela Basso
- Unit of Laboratory Medicine, Department of Medicine-DIMED, University of Padua, Padua, Italy
| | - Davide Gatti
- Unit of Rheumatology, Department of Medicine, University of Verona, Verona, Italy
| | - Silvia Valisena
- Service of Traumatology, Orthopedics and Hand Surgery, Regional Hospital of Bellinzona, Switzerland
| | | | - Marco Sorio
- Unit of Hematology, Department of Medicine, University of Verona, Verona, Italy
| | - Tamara Berno
- Hematology and Clinical Immunology Branch, Department of Medicine-DIMED, University of Padua, Padua, Italy
| | - Sandro Giannini
- Unit of Internal Medicine, Department of Medicine-DIMED, University of Padua, Padua, Italy
| | - Filippo Navaglia
- Unit of Laboratory Medicine, Department of Medicine-DIMED, University of Padua, Padua, Italy
| | - Mario Plebani
- Unit of Laboratory Medicine, Department of Medicine-DIMED, University of Padua, Padua, Italy
| | - Pier Francesco Nocini
- Unit of Oral and Maxillofacial Surgery, Department of Surgery, University of Verona, Verona, Italy
| | | | - Giorgia Saia
- Unit of Maxillofacial Surgery, Department of Neuroscience-DNS, University of Padua, Padua, Italy
| | - Francesco Bertoldo
- Unit of Internal Medicine, Department of Medicine, University of Verona, Verona, Italy
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Yang C, Kok S, Wang H, Chang JZ, Lai EH, Shun C, Yang H, Chen M, Hong C, Lin S. Simvastatin alleviates bone resorption in apical periodontitis possibly by inhibition of mitophagy‐related osteoblast apoptosis. Int Endod J 2018; 52:676-688. [DOI: 10.1111/iej.13055] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 12/04/2018] [Indexed: 12/15/2022]
Affiliation(s)
- C.‐N. Yang
- Department of Dentistry School of Dentistry National Taiwan University Taipei Taiwan
| | - S.‐H. Kok
- Department of Dentistry School of Dentistry National Taiwan University Taipei Taiwan
- Department of Dentistry National Taiwan University Hospital Taipei Taiwan
| | - H.‐W. Wang
- Department of Dentistry National Taiwan University Hospital Taipei Taiwan
| | - J. Z.‐C. Chang
- Department of Dentistry School of Dentistry National Taiwan University Taipei Taiwan
- Department of Dentistry National Taiwan University Hospital Taipei Taiwan
| | - E. H.‐H. Lai
- Department of Dentistry School of Dentistry National Taiwan University Taipei Taiwan
- Department of Dentistry National Taiwan University Hospital Taipei Taiwan
| | - C.‐T. Shun
- Department of Forensic Medicine and Pathology National Taiwan University Hospital Taipei Taiwan
| | - H. Yang
- Department of Dentistry National Taiwan University Hospital Taipei Taiwan
| | - M.‐H. Chen
- Department of Dentistry National Taiwan University Hospital Taipei Taiwan
| | - C.‐Y. Hong
- Department of Dentistry School of Dentistry National Taiwan University Taipei Taiwan
- Department of Dentistry National Taiwan University Hospital Taipei Taiwan
- Department of Prosthodontics School of Dentistry China Medical University Taichung Taiwan
- College of Bio‐Resources and Agriculture National Taiwan University Taipei Taiwan
| | - S.‐K. Lin
- Department of Dentistry School of Dentistry National Taiwan University Taipei Taiwan
- Department of Dentistry National Taiwan University Hospital Taipei Taiwan
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Park OJ, Kim J, Kim HY, Kwon Y, Yun CH, Han SH. Streptococcus gordonii induces bone resorption by increasing osteoclast differentiation and reducing osteoblast differentiation. Microb Pathog 2018; 126:218-223. [PMID: 30414445 DOI: 10.1016/j.micpath.2018.11.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 07/26/2018] [Accepted: 11/02/2018] [Indexed: 01/18/2023]
Abstract
Streptococcus gordonii is commonly found in the periapical endodontic lesions of patients with apical periodontitis, a condition characterized by inflammation and periapical bone loss. Since bone metabolism is controlled by osteoclastic bone resorption and osteoblastic bone formation, we investigated the effects of S. gordonii on the differentiation and function of osteoclasts and osteoblasts. For the determination of bone resorption activity in vivo, collagen sheets soaked with heat-killed S. gordonii were implanted on mouse calvaria, and the calvarial bones were scanned by micro-computed tomography. Mouse bone marrow-derived macrophages (BMMs) were stimulated with M-CSF and RANKL for 2 days and then differentiated into osteoclasts in the presence or absence of heat-killed S. gordonii. Tartrate-resistant acid phosphatase staining was performed to determine osteoclast differentiation. Primary osteoblast precursors were differentiated into osteoblasts with ascorbic acid and β-glycerophosphate in the presence or absence of heat-killed S. gordonii. Alkaline phosphatase staining and alizarin red S staining were conducted to determine osteoblast differentiation. Western blotting was performed to examine the expression of transcription factors including c-Fos, NFATc1, and Runx2. Heat-killed S. gordonii induced bone destruction in a mouse calvarial implantation model. The differentiation of RANKL-primed BMMs into osteoclasts was enhanced in the presence of heat-killed S. gordonii. Heat-killed S. gordonii increased the expression of c-Fos and NFATc1, which are essential transcription factors for osteoclast differentiation. On the other hand, heat-killed S. gordonii inhibited osteoblast differentiation and reduced the expression of Runx2, an essential transcription factor for osteoblast differentiation. S. gordonii exerts bone resorptive activity by increasing osteoclast differentiation and reducing osteoblast differentiation, which may be involved in periapical bone resorption.
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Affiliation(s)
- Ok-Jin Park
- Department of Oral Microbiology and Immunology, DRI and BK21 Plus Program, School of Dentistry, Seoul National University, Seoul 08826, Republic of Korea
| | - Jiseon Kim
- Department of Oral Microbiology and Immunology, DRI and BK21 Plus Program, School of Dentistry, Seoul National University, Seoul 08826, Republic of Korea
| | - Hyun Young Kim
- Department of Oral Microbiology and Immunology, DRI and BK21 Plus Program, School of Dentistry, Seoul National University, Seoul 08826, Republic of Korea
| | - Yeongkag Kwon
- Department of Oral Microbiology and Immunology, DRI and BK21 Plus Program, School of Dentistry, Seoul National University, Seoul 08826, Republic of Korea
| | - Cheol-Heui Yun
- Department of Agricultural Biotechnology and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea; Institute of Green Bio Science Technology, Seoul National University, Pyeongchang 25354, Republic of Korea
| | - Seung Hyun Han
- Department of Oral Microbiology and Immunology, DRI and BK21 Plus Program, School of Dentistry, Seoul National University, Seoul 08826, Republic of Korea.
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Lai EHH, Yang CN, Lin SK, Wang HW, Kok SH, Hong CY, Su IH, Yang H, Chang JZC. Metformin Ameliorates Periapical Lesions through Suppression of Hypoxia-induced Apoptosis of Osteoblasts. J Endod 2018; 44:1817-1825. [PMID: 30293696 DOI: 10.1016/j.joen.2018.08.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 07/04/2018] [Accepted: 08/12/2018] [Indexed: 12/13/2022]
Abstract
INTRODUCTION Intramuscular injection of metformin has been shown to inhibit the progression of periapical lesions in rats by decreasing the number of receptor activator of nuclear factor-κβ ligand- and tartrate-resistant acid phosphatase-positive cells. In this study, we investigated the effect of metformin on hypoxia-induced apoptosis of osteoblasts and the therapeutic activity of intracanal metformin in induced periapical lesions in rats. METHODS The influence of metformin on hypoxia-induced mitochondrial superoxide production in human osteoblasts was examined by using MitoSOX (Invitrogen, Carlsbad, CA) fluorescence dye signaling. The release of cytochrome c from mitochondria and the cleavage of procaspase-9 and poly(adenosine diphosphate-ribose) polymerase were evaluated by Western blot analysis. Apoptotic cell fraction was assessed by DNA content flow cytometry. In a rat model of induced periapical lesions, the effect of intracanal metformin on disease progression was appraised by 2-dimensional radiography and micro-computed tomographic imaging. Oxidative lesions and apoptotic activity of osteoblasts in vivo were estimated, respectively, by 8-hydroxy-2'-deoxyguanosine staining and terminal deoxynucleotidyl transferase dUTP nick end labeling. RESULTS Metformin inhibited hypoxia-enhanced mitochondrial superoxide production in osteoblasts. Metformin suppressed hypoxia-induced cytochrome c release from mitochondria and the cleavage of procaspase-9 and poly(adenosine diphosphate-ribose) polymerase. Metformin repressed hypoxia-augmented apoptotic cell fraction. In a rat model, intracanal metformin diminished the size of periapical lesions and the oxidative damage and apoptotic activity in osteoblasts. CONCLUSIONS Hypoxia increased oxidative stress in osteoblasts and enhanced cell death through activation of the mitochondrial pathway of apoptosis. Metformin attenuated the oxidative and cytotoxic action of hypoxia. The therapeutic effect of metformin on periapical lesions is partially caused by its antioxidative activity.
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Affiliation(s)
- Eddie Hsiang-Hua Lai
- Department of Dentistry, School of Dentistry, College of Medicine, Taipei, Taiwan
| | - Cheng-Ning Yang
- Graduate Institute of Clinical Dentistry, School of Dentistry, College of Medicine, Taipei, Taiwan
| | - Sze-Kwan Lin
- Department of Dentistry, School of Dentistry, College of Medicine, Taipei, Taiwan
| | - Han-Wei Wang
- Department of Dentistry, School of Dentistry, College of Medicine, Taipei, Taiwan
| | - Sang-Heng Kok
- Department of Dentistry, School of Dentistry, College of Medicine, Taipei, Taiwan
| | - Chi-Yuan Hong
- Department of Dentistry, School of Dentistry, College of Medicine, Taipei, Taiwan; College of Bio-Resources and Agriculture, National Taiwan University, Taipei, Taiwan
| | - I-Hsuan Su
- Graduate Institute of Clinical Dentistry, School of Dentistry, College of Medicine, Taipei, Taiwan
| | - Hsiang Yang
- Department of Dentistry, School of Dentistry, College of Medicine, Taipei, Taiwan
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Orapiriyakul W, Young PS, Damiati L, Tsimbouri PM. Antibacterial surface modification of titanium implants in orthopaedics. J Tissue Eng 2018; 9:2041731418789838. [PMID: 30083308 PMCID: PMC6071164 DOI: 10.1177/2041731418789838] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 06/29/2018] [Indexed: 12/18/2022] Open
Abstract
The use of biomaterials in orthopaedics for joint replacement, fracture healing and bone regeneration is a rapidly expanding field. Infection of these biomaterials is a major healthcare burden, leading to significant morbidity and mortality. Furthermore, the cost to healthcare systems is increasing dramatically. With advances in implant design and production, research has predominately focussed on osseointegration; however, modification of implant material, surface topography and chemistry can also provide antibacterial activity. With the increasing burden of infection, it is vitally important that we consider the bacterial interaction with the biomaterial and the host when designing and manufacturing future implants. During this review, we will elucidate the interaction between patient, biomaterial surface and bacteria. We aim to review current and developing surface modifications with a view towards antibacterial orthopaedic implants for clinical applications.
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Affiliation(s)
- Wich Orapiriyakul
- Centre for the Cellular Microenvironment, College of Medical, Veterinary & Life Sciences, Institute of Molecular, Cell and Systems Biology, University of Glasgow, Glasgow, UK
| | - Peter S Young
- Centre for the Cellular Microenvironment, College of Medical, Veterinary & Life Sciences, Institute of Molecular, Cell and Systems Biology, University of Glasgow, Glasgow, UK
| | - Laila Damiati
- Centre for the Cellular Microenvironment, College of Medical, Veterinary & Life Sciences, Institute of Molecular, Cell and Systems Biology, University of Glasgow, Glasgow, UK
| | - Penelope M Tsimbouri
- Centre for the Cellular Microenvironment, College of Medical, Veterinary & Life Sciences, Institute of Molecular, Cell and Systems Biology, University of Glasgow, Glasgow, UK
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Shim JH, Stavre Z, Gravallese EM. Bone Loss in Rheumatoid Arthritis: Basic Mechanisms and Clinical Implications. Calcif Tissue Int 2018; 102:533-546. [PMID: 29204672 DOI: 10.1007/s00223-017-0373-1] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 11/30/2017] [Indexed: 12/14/2022]
Abstract
Patients with rheumatoid arthritis (RA) have historically developed progressive damage of articular bone and cartilage, which correlates with disability over time. In addition, these patients are prone to periarticular and systemic bone loss, carrying additional morbidity. In contrast to what is seen in many other rheumatic diseases, the impact of inflammation on bone in RA is uniquely destructive. Loss of articular bone (erosions) and periarticular bone (demineralization) is a result of excessive bone resorption and markedly limited bone formation. There has been tremendous progress in preventing net bone loss in RA with the advent of disease-modifying agents, including biologic agents and small molecules, that both limit inflammation and may have a direct impact on the prevention of cytokine- and antibody-driven osteoclastogenesis. However, repair of existing bone erosions, although feasible, is observed infrequently. Lack of repair is a consequence of suppression of osteoblast function and bone formation by some of the same mechanisms that promote osteoclastogenesis and bone resorption. As new agents are introduced to control inflammation in RA, and novel mechanisms to target synovitis are identified, it may be possible in the future to fully repair damaged bone.
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Affiliation(s)
- Jae-Hyuck Shim
- Division of Rheumatology, Department of Medicine, University of Massachusetts Medical School, 364 Plantation Street, Worcester, MA, 01605, USA
| | - Zheni Stavre
- Division of Rheumatology, Department of Medicine, University of Massachusetts Medical School, 364 Plantation Street, Worcester, MA, 01605, USA
| | - Ellen M Gravallese
- Division of Rheumatology, Department of Medicine, University of Massachusetts Medical School, 364 Plantation Street, Worcester, MA, 01605, USA.
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Raehtz S, Hargis BM, Kuttappan VA, Pamukcu R, Bielke LR, McCabe LR. High Molecular Weight Polymer Promotes Bone Health and Prevents Bone Loss Under Salmonella Challenge in Broiler Chickens. Front Physiol 2018; 9:384. [PMID: 29706903 PMCID: PMC5908899 DOI: 10.3389/fphys.2018.00384] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 03/28/2018] [Indexed: 12/12/2022] Open
Abstract
As a consequence of rapid growth, broiler chickens are more susceptible to infection as well as bone fractures that result in birds being culled. Intestinal infection/inflammation has been demonstrated to promote bone loss in mice and humans. Given this link, we hypothesize that therapeutics that target the gut can benefit bone health. To test this, we infected broiler chickens (7 days old) with Salmonella and treated the birds with or without MDY, a non-absorbable mucus supplement known to benefit intestinal health, from day 1–21 or from day 14–21. Chicken femoral trabecular and cortical bone parameters were analyzed by microcomputed tomography at 21 days. Birds infected with Salmonella displayed significant trabecular bone loss and bone microarchitecture abnormalities that were specific to the femoral neck region, a common site of fracture in chickens. Histological analyses of the chicken bone indicated an increase in osteoclast surface/bone surface in this area indicating that infection-induced bone resorption likely causes the bone loss. Of great interest, treatment with MDY effectively prevented broiler chicken bone loss and architectural changes when given chronically throughout the experiment or for only a week after infection. The latter suggests that MDY may not only prevent bone loss but reverse bone loss. MDY also increased cortical bone mineral density in Salmonella-treated chickens. Taken together, our studies demonstrate that Salmonella-induced bone loss in broiler chickens is prevented by oral MDY.
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Affiliation(s)
- Sandi Raehtz
- Department of Physiology, Michigan State University, East Lansing, MI, United States
| | - Billy M Hargis
- Department of Poultry Science, University of Arkansas, Fayetteville, AR, United States
| | - Vivek A Kuttappan
- Department of Poultry Science, University of Arkansas, Fayetteville, AR, United States
| | - Rifat Pamukcu
- Midway Pharmaceuticals, Spring House, PA, United States
| | - Lisa R Bielke
- Department of Animal Science, Ohio State University, Columbus, OH, United States
| | - Laura R McCabe
- Department of Physiology, Michigan State University, East Lansing, MI, United States.,Department of Radiology, Michigan State University, East Lansing, MI, United States.,Biomedical Imaging Research Centre, Michigan State University, East Lansing, MI, United States
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38
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Aurore V, Caldana F, Blanchard M, Kharoubi Hess S, Lannes N, Mantel PY, Filgueira L, Walch M. Silver-nanoparticles increase bactericidal activity and radical oxygen responses against bacterial pathogens in human osteoclasts. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2017; 14:601-607. [PMID: 29155361 DOI: 10.1016/j.nano.2017.11.006] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Revised: 10/13/2017] [Accepted: 11/06/2017] [Indexed: 12/20/2022]
Abstract
Bone infections are difficult to treat and can lead to severe tissue destruction. Acute bone infections are usually caused by Staphylococcus aureus. Osteoclasts, which belong to the monocyte/macrophage lineage, are the key cells in bone infections. They are not well equipped for killing bacteria and may serve as a reservoir for bacterial pathogens. Silver has been known for centuries for its bactericidal activity. Here, we investigated the bactericidal effects of nano-silver particles in bacteria infected human osteoclasts. We found that nano-silver in per se non-toxic concentration enhanced the bactericidal activity in osteoclasts against intracellular Methicillin-resistant, virulent Staphylococcus aureus. The reduced bacterial survival in nano-silver pretreated cells correlated with increased reactive oxygen responses towards the invading pathogens. Overall, these results indicate that nano-silver compounds should be considered as an effective treatment and prevention option for bacterial bone and orthopedic implant infections.
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Affiliation(s)
- Valerie Aurore
- Anatomy unit, Department of Medicine, University of Fribourg, Fribourg, Switzerland
| | - Fabienne Caldana
- Anatomy unit, Department of Medicine, University of Fribourg, Fribourg, Switzerland
| | - Marianne Blanchard
- Anatomy unit, Department of Medicine, University of Fribourg, Fribourg, Switzerland
| | | | - Nils Lannes
- Anatomy unit, Department of Medicine, University of Fribourg, Fribourg, Switzerland
| | - Pierre-Yves Mantel
- Anatomy unit, Department of Medicine, University of Fribourg, Fribourg, Switzerland
| | - Luis Filgueira
- Anatomy unit, Department of Medicine, University of Fribourg, Fribourg, Switzerland
| | - Michael Walch
- Anatomy unit, Department of Medicine, University of Fribourg, Fribourg, Switzerland.
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Croes M, Boot W, Kruyt MC, Weinans H, Pouran B, van der Helm YJ, Gawlitta D, Vogely HC, Alblas J, Dhert WJ, Öner FC. Inflammation-Induced Osteogenesis in a Rabbit Tibia Model. Tissue Eng Part C Methods 2017. [DOI: 10.1089/ten.tec.2017.0151] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Affiliation(s)
- Michiel Croes
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Willemijn Boot
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Moyo C. Kruyt
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Harrie Weinans
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, The Netherlands
- Department of Biomechanical Engineering, Faculty of Mechanical, Maritime, and Materials Engineering, Delft University of Technology, Delft, The Netherlands
- Department of Rheumatology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Behdad Pouran
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, The Netherlands
- Department of Biomechanical Engineering, Faculty of Mechanical, Maritime, and Materials Engineering, Delft University of Technology, Delft, The Netherlands
| | | | - Debby Gawlitta
- Department of Oral and Maxillofacial Surgery & Special Dental Care, University Medical Center Utrecht, Utrecht, The Netherlands
| | - H. Charles Vogely
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Jacqueline Alblas
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Wouter J.A. Dhert
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, The Netherlands
- Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - F. Cumhur Öner
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, The Netherlands
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Wagner JM, Jaurich H, Wallner C, Abraham S, Becerikli M, Dadras M, Harati K, Duhan V, Khairnar V, Lehnhardt M, Behr B. Diminished bone regeneration after debridement of posttraumatic osteomyelitis is accompanied by altered cytokine levels, elevated B cell activity, and increased osteoclast activity. J Orthop Res 2017; 35:2425-2434. [PMID: 28263017 DOI: 10.1002/jor.23555] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2016] [Accepted: 02/27/2017] [Indexed: 02/04/2023]
Abstract
Osteomyelitis is a frequent consequence of open fractures thus representing a common bone infection with subsequent alteration of bone regeneration. Impaired bone homeostasis provokes serious variations in the bone remodeling process, thereby involving multiple inflammatory cytokines to activate bone healing. Our previously established mouse model of posttraumatic osteomyelitis provides the chance to study regulation of selected cytokines after surgical debridement of osteomyelitis thus illustrating the course of initial infectious recovery. An inflammatory cytokine array revealed specifically upregulated cytokines in debrided animals after bone infection, that were verified by Western blot analysis, identifying increased levels of CCL2, CCL3, and CXCL2. Increased osteoclastogenesis after debridement of osteomyelitis was demonstrated by Calcitonin-receptor and RANKL detection via immunohistochemical and -fluorescence stainings. The substantial protein analysis was complemented by uncovering diminished osteogenesis and proliferation in debrided group, tracking Osteocalcin, RUNX2, and PCNA expression. Interestingly TNF-α expression seemed to have no effect on altered bone regeneration after bone infection. Additional flow cytometry analysis proved elevated B cell activity, subsequently increased osteoclast activity and accelerated bone resorption. Based on the variety of severely altered cytokines, we propose a RANKL-dependent osteoclastogenesis after debridement of osteomyelitis coinciding with elevated B cells and simultaneously decreased osteogenesis. A comprehensive understanding of these mechanisms provides new therapeutic options of osteomyelitis cure and is of great importance in prospective medical treatment. © 2017 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 35:2425-2434, 2017.
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Affiliation(s)
- Johannes M Wagner
- Department of Plastic Surgery, BG University Hospital Bergmannsheil, Ruhr University Bochum, Bürkle-de-la-camp Platz 1, 44789, Bochum, Germany
| | - Henriette Jaurich
- Department of Plastic Surgery, BG University Hospital Bergmannsheil, Ruhr University Bochum, Bürkle-de-la-camp Platz 1, 44789, Bochum, Germany
| | - Christoph Wallner
- Department of Plastic Surgery, BG University Hospital Bergmannsheil, Ruhr University Bochum, Bürkle-de-la-camp Platz 1, 44789, Bochum, Germany
| | - Stephanie Abraham
- Department of Plastic Surgery, BG University Hospital Bergmannsheil, Ruhr University Bochum, Bürkle-de-la-camp Platz 1, 44789, Bochum, Germany
| | - Mustafa Becerikli
- Department of Plastic Surgery, BG University Hospital Bergmannsheil, Ruhr University Bochum, Bürkle-de-la-camp Platz 1, 44789, Bochum, Germany
| | - Mehran Dadras
- Department of Plastic Surgery, BG University Hospital Bergmannsheil, Ruhr University Bochum, Bürkle-de-la-camp Platz 1, 44789, Bochum, Germany
| | - Kamran Harati
- Department of Plastic Surgery, BG University Hospital Bergmannsheil, Ruhr University Bochum, Bürkle-de-la-camp Platz 1, 44789, Bochum, Germany
| | - Vikas Duhan
- Institute of Immunology, University Hospital Essen, Essen, Germany
| | - Vishal Khairnar
- Institute of Immunology, University Hospital Essen, Essen, Germany
| | - Marcus Lehnhardt
- Department of Plastic Surgery, BG University Hospital Bergmannsheil, Ruhr University Bochum, Bürkle-de-la-camp Platz 1, 44789, Bochum, Germany
| | - Björn Behr
- Department of Plastic Surgery, BG University Hospital Bergmannsheil, Ruhr University Bochum, Bürkle-de-la-camp Platz 1, 44789, Bochum, Germany
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The Lyme Disease Pathogen Borrelia burgdorferi Infects Murine Bone and Induces Trabecular Bone Loss. Infect Immun 2017; 85:IAI.00781-16. [PMID: 27956598 PMCID: PMC5278181 DOI: 10.1128/iai.00781-16] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Accepted: 12/05/2016] [Indexed: 01/08/2023] Open
Abstract
Lyme disease is caused by members of the Borrelia burgdorferisensu lato species complex. Arthritis is a well-known late-stage pathology of Lyme disease, but the effects of B. burgdorferi infection on bone at sites other than articular surfaces are largely unknown. In this study, we investigated whether B. burgdorferi infection affects bone health in mice. In mice inoculated with B. burgdorferi or vehicle (mock infection), we measured the presence of B. burgdorferi DNA in bones, bone mineral density (BMD), bone formation rates, biomechanical properties, cellular composition, and two- and three-dimensional features of bone microarchitecture. B. burgdorferi DNA was detected in bone. In the long bones, increasing B. burgdorferi DNA copy number correlated with reductions in areal and trabecular volumetric BMDs. Trabecular regions of femora exhibited significant, copy number-correlated microarchitectural disruption, but BMD, microarchitectural, and biomechanical properties of cortical bone were not affected. Bone loss in tibiae was not due to increased osteoclast numbers or bone-resorbing surface area, but it was associated with reduced osteoblast numbers, implying that bone loss in long bones was due to impaired bone building. Osteoid-producing and mineralization activities of existing osteoblasts were unaffected by infection. Therefore, deterioration of trabecular bone was not dependent on inhibition of osteoblast function but was more likely caused by blockade of osteoblastogenesis, reduced osteoblast survival, and/or induction of osteoblast death. Together, these data represent the first evidence that B. burgdorferi infection induces bone loss in mice and suggest that this phenotype results from inhibition of bone building rather than increased bone resorption.
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Jeppesen SM, Frøkjær J, Yderstræde K. Conservative treatment in a patient with diabetic osteomyelitis: antibiotic treatment is sufficient for complete bone regeneration in selected cases. BMJ Case Rep 2015; 2015:bcr-2015-211376. [PMID: 26581702 DOI: 10.1136/bcr-2015-211376] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Diabetic foot ulcers are commonly complicated by bone involvement and osteomyelitis. Diagnosing diabetic osteomyelitis can be problematic. However, positive findings at clinical examination and X-ray may set the diagnosis. Recent guidelines suggest that selected cases of diabetic osteomyelitis can be treated conservatively with antibiotics. We report on the successful treatment of a 52-year-old man with diabetes with osteomyelitis in the distal phalanx of a toe. On X-ray, the affected phalanx appeared completely eroded. However, regeneration of the bone tissue was observed following outpatient treatment with antibiotics. We therefore encourage doctors to provide conservative treatment for selected cases of diabetic osteomyelitis.
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Affiliation(s)
| | - Johnny Frøkjær
- Department of Orthopaedic Surgery, Odense University Hospital (OUH), Odense C, Denmark
| | - Knud Yderstræde
- Department of Endocrinology M, Odense University Hospital (OUH), Odense C, Denmark
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Sirtuin 6 Modulates Hypoxia-induced Apoptosis in Osteoblasts via Inhibition of Glycolysis: Implication for Pathogenesis of Periapical Lesions. J Endod 2015; 41:1631-7. [PMID: 26187426 DOI: 10.1016/j.joen.2015.05.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 05/19/2015] [Accepted: 05/20/2015] [Indexed: 12/11/2022]
Abstract
INTRODUCTION Osteoblast apoptosis is important in the regulation of inflammatory bone resorption. Hypoxia resulting from inflammation enhances glycolysis and apoptosis. Sirtuin 6 (SIRT6) is a modulator of glucose metabolism and apoptosis. In the study we assessed the role of SIRT6 in hypoxia-induced glycolysis and apoptosis in osteoblasts, with special attention on the significance of these cellular processes in periapical lesions. METHODS Human bone marrow-derived osteoblasts were cultured under hypoxia. Expression of lactate dehydrogenase A was examined by Western blot, and production of lactate was measured by colorimetric assay. Cleavage of poly (adenosine diphosphate ribose) polymerase was used as an apoptosis marker and assessed by Western blot. SIRT6 was overexpressed in osteoblasts by lentiviral gene transduction, and then glycolytic and apoptotic responses were studied. In a rat model of bacteria-induced periapical lesions, expressions of SIRT6 and markers of glycolysis and apoptosis in osteoblasts were examined. RESULTS Hypoxia enhanced lactate dehydrogenase A expression and lactate production in osteoblasts. Poly (adenosine diphosphate ribose) polymerase cleavage was induced by hypoxia or lactate treatment. SIRT6 suppressed hypoxia-augmented glycolysis and inhibited apoptosis induced by hypoxia or lactate treatment. Expression of SIRT6 in osteoblasts was downregulated by hypoxia and inflammatory mediators. Development of periapical lesions in rats was associated with decreased expression of SIRT6 and increased glycolysis and apoptosis in osteoblasts. CONCLUSIONS Our study suggested that hypoxia-induced apoptosis of osteoblasts is dependent on glycolytic activity. SIRT6 is a negative regulator of inflammation and may alleviate periapical lesions by suppressing osteoblastic glycolysis and apoptosis.
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Song J, Odekerken JCE, Löwik DWPM, López-Pérez PM, Welting TJM, Yang F, Jansen JA, Leeuwenburgh SCG. Influence of the Molecular Weight and Charge of Antibiotics on Their Release Kinetics From Gelatin Nanospheres. Macromol Biosci 2015; 15:901-11. [PMID: 25771899 DOI: 10.1002/mabi.201500005] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 02/09/2015] [Indexed: 01/04/2023]
Abstract
In this study, we investigated the fundamental relationship between the physicochemical characteristics of antibiotics and the kinetics of their release from gelatin nanospheres. We observed that antibiotics of high molecular weight (colistin and vancomycin) were released in a sustained manner from oppositely charged gelatin carriers for more than 14 d, as opposed to antibiotics of low molecular weight (gentamicin and moxifloxacin) which were released in a burst-like manner. The release kinetics of positively charged colistin strongly correlated with the rate of the enzymatic degradation of gelatin. To elucidate the differences among release kinetics of antibiotics, we explored the mechanism of interactions between antibiotics and gelatin nanospheres by monitoring the kinetics of release of antibiotics as a function of pH, ionic strength, and detergent concentrations. These studies revealed that the interactions between antibiotics and gelatin nanospheres were mainly dominated by (i) strong electrostatic forces for colistin; (ii) strong hydrophobic and electrostatic forces for vancomycin; (iii) weak electrostatic and hydrophobic forces for gentamicin; and (iv) weak hydrophobic forces for moxifloxacin. These results confirm that release of antibiotics from gelatin nanospheres strongly depends on the physicochemical characteristics of the antibiotics.
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Affiliation(s)
- Jiankang Song
- Department of Biomaterials, Radboud University Medical Center, P.O. Box 9101, 6500 HB, Nijmegen, The Netherlands
| | - Jim C E Odekerken
- Department of Orthopedic Surgery, Laboratory for Experimental Orthopedics, CAPHRI School for Public Health and Primary Care, Maastricht University Medical Centre, The Netherlands
| | - Dennis W P M Löwik
- Department of Bio-Organic Chemistry, Institute for Molecules and Materials, Radboud University Nijmegen, The Netherlands
| | - Paula M López-Pérez
- Department of Biomaterials, Radboud University Medical Center, P.O. Box 9101, 6500 HB, Nijmegen, The Netherlands
| | - Tim J M Welting
- Department of Orthopedic Surgery, Laboratory for Experimental Orthopedics, CAPHRI School for Public Health and Primary Care, Maastricht University Medical Centre, The Netherlands
| | - Fang Yang
- Department of Biomaterials, Radboud University Medical Center, P.O. Box 9101, 6500 HB, Nijmegen, The Netherlands
| | - John A Jansen
- Department of Biomaterials, Radboud University Medical Center, P.O. Box 9101, 6500 HB, Nijmegen, The Netherlands
| | - Sander C G Leeuwenburgh
- Department of Biomaterials, Radboud University Medical Center, P.O. Box 9101, 6500 HB, Nijmegen, The Netherlands.
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Sustained delivery of biomolecules from gelatin carriers for applications in bone regeneration. Ther Deliv 2014; 5:943-58. [DOI: 10.4155/tde.14.42] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Local delivery of therapeutic biomolecules to stimulate bone regeneration has matured considerably during the past decades, but control over the release of these biomolecules still remains a major challenge. To this end, suitable carriers that allow for tunable spatial and temporal delivery of biomolecules need to be developed. Gelatin is one of the most widely used natural polymers for the controlled and sustained delivery of biomolecules because of its biodegradability, biocompatibility, biosafety and cost–effectiveness. The current study reviews the applications of gelatin as carriers in form of bulk hydrogels, microspheres, nanospheres, colloidal gels and composites for the programmed delivery of commonly used biomolecules for applications in bone regeneration with a specific focus on the relationship between carrier properties and delivery characteristics.
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He Y, Amer AO. Microbial modulation of host apoptosis and pyroptosis. Front Cell Infect Microbiol 2014; 4:83. [PMID: 24995165 PMCID: PMC4062964 DOI: 10.3389/fcimb.2014.00083] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2014] [Accepted: 06/03/2014] [Indexed: 11/13/2022] Open
Affiliation(s)
- Yongqun He
- Unit for Laboratory Animal Medicine, Department of Microbiology and Immunology, Center for Computational Medicine and Bioinformatics, Comprehensive Cancer Center, University of Michigan Medical School Ann Arbor, MI, USA
| | - Amal O Amer
- Department of Microbial Infection and Immunity, Department of Internal Medicine, Center for Microbial Interface Biology, Ohio State University Columbus, OH, USA
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