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Shi Z, Dun B, Wei Z, Liu C, Tian J, Ren G, Yao Y. Peptides Released from Extruded Adzuki Bean Protein through Simulated Gastrointestinal Digestion Exhibit Anti-inflammatory Activity. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:7028-7036. [PMID: 34138556 DOI: 10.1021/acs.jafc.1c01712] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Increasing attention has been focused on plant-derived peptides because of their potential bioactivities. In this study, bioactive peptides were released from extruded adzuki bean protein by simulated gastrointestinal digestion. A peptide (KQS-1) sequenced as KQSESHFVDAQPEQQQR was separated and identified using ultrafiltration, pre-high-performance liquid chromatography (HPLC), and ultraperformance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). KQS-1 was shown to exert significant anti-inflammatory effects in lipopolysaccharide (LPS)-induced RAW 264.7 macrophages by reducing the production of IL-1, IL-6, TNF-α, and MCP-1 to 38.31, 6.07, 43.96, and 41.74%, respectively. The involved signaling pathways were identified by transcriptome analysis. Overall, 5236 differentially expressed genes (DEGs) were identified. Gene ontology (GO) functions demonstrated that DEGs were significantly related to the NF-κB pathway. In conclusion, KQS-1 prevented the activation and expression of NF-κB/caspase-1 by upstream and downstream factors. These findings highlight the bioactivity of adzuki bean peptides.
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Affiliation(s)
- Zhenxing Shi
- Institute of Crop Science, Chinese Academy of Agricultural Sciences (CAAS), 80 South Xueyuan Road, Haidian District, Beijing 100081, People's Republic of China
| | - Baoqing Dun
- Institute of Crop Science, Chinese Academy of Agricultural Sciences (CAAS), 80 South Xueyuan Road, Haidian District, Beijing 100081, People's Republic of China
| | - Zuchen Wei
- Institute of Crop Science, Chinese Academy of Agricultural Sciences (CAAS), 80 South Xueyuan Road, Haidian District, Beijing 100081, People's Republic of China
- Laboratory for Green Cultivation and Deep Processing of Three Gorges Reservoir Area's Medicinal Herbs, College of Life Science & Engineering, The Chongqing Engineering, Chongqing Three Gorges University, No. 666 Tianxing Road, Wanzhou District, Chongqing 404000, People's Republic of China
| | - Changyou Liu
- Institute of Cereal and Oil Crops, Hebei Academy of Agricultural and Forestry Sciences/Hebei Laboratory of Crop Genetic and Breeding, Shijiazhuang 050035, Hebei, People's Republic of China
| | - Jing Tian
- Institute of Cereal and Oil Crops, Hebei Academy of Agricultural and Forestry Sciences/Hebei Laboratory of Crop Genetic and Breeding, Shijiazhuang 050035, Hebei, People's Republic of China
| | - Guixing Ren
- Institute of Crop Science, Chinese Academy of Agricultural Sciences (CAAS), 80 South Xueyuan Road, Haidian District, Beijing 100081, People's Republic of China
| | - Yang Yao
- Institute of Crop Science, Chinese Academy of Agricultural Sciences (CAAS), 80 South Xueyuan Road, Haidian District, Beijing 100081, People's Republic of China
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Immunomodulation of Biomaterials by Controlling Macrophage Polarization. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1064:197-206. [PMID: 30471034 DOI: 10.1007/978-981-13-0445-3_12] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Macrophages are key players in innate immune responses to foreign substances. They participate in the phagocytosis of biomaterial-derived particles, angiogenesis, recruitment of fibroblasts, and formation of granulation tissues. Most macrophage functions are achieved through the release of various cytokines and chemokines; the release profile of cytokines is dependent on the phenotype of macrophages, namely proinflammatory M1 or antiinflammatory M2. M1 and M2 macrophages coexist during an inflammatory phase, and the M1/M2 ratio is considered to be an important factor for wound-healing or tissue regeneration. This ratio depends on the chemical and physical properties of biomaterials. To obtain a favorable foreign body reaction to biomaterials, the phenotypes of the macrophages can be modulated by cytokines, antibodies, small chemicals, and microRNAs. Geometrical surface fabrication of biomaterials can also be used for modulating the phenotype of macrophages.
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Li B, Hu Y, Zhao Y, Cheng M, Qin H, Cheng T, Wang Q, Peng X, Zhang X. Curcumin Attenuates Titanium Particle-Induced Inflammation by Regulating Macrophage Polarization In Vitro and In Vivo. Front Immunol 2017; 8:55. [PMID: 28197150 PMCID: PMC5281580 DOI: 10.3389/fimmu.2017.00055] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Accepted: 01/12/2017] [Indexed: 01/31/2023] Open
Abstract
Periprosthetic inflammatory osteolysis and subsequent aseptic loosening are commonly observed in total joint arthroplasty. Other than revision surgery, few approved treatments are available for this complication. Wear particle-induced inflammation and macrophage polarization state play critical roles in periprosthetic osteolysis. We investigated the effects of curcumin, a polyphenol extracted from Curcuma longa, on titanium (Ti) particle-induced inflammation and macrophage polarization in vitro using the murine cell line RAW 264.7 and in vivo using a murine air pouch model. The expression of specific macrophage markers was qualitatively analyzed by immunofluorescence (inducible nitric oxide synthase and CD206) and quantitatively analyzed by flow cytometry (CCR7 and CD206), representing M1 and M2 macrophages, respectively. Our results show that curcumin induced a higher percentage of M2 macrophages together with a higher concentration of anti-inflammatory cytokine IL-10, and a lower percentage of M1 macrophages with a lower concentration of pro-inflammatory cytokines (TNF-α and IL-6). The genes encoding CD86 (M1) and CD163 (M2), two additional markers, were shifted by curcumin toward an M2 phenotype. C57BL/J6 mice were injected with air and Ti particles to establish an air pouch model. Curcumin reduced cell infiltration in the pouch membrane and decreased membrane thickness. The analysis of exudates obtained from pouches demonstrated that the effects of curcumin on macrophage polarization and cytokine production were similar to those observed in vitro. These results prove that curcumin suppresses Ti particle-induced inflammation by regulating macrophage polarization. Thus, curcumin could be developed as a new therapeutic candidate for the prevention and treatment of inflammatory osteolysis and aseptic loosening.
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Affiliation(s)
- Bin Li
- Department of Orthopedics, Shanghai Sixth People' Hospital, Shanghai Jiao Tong University , Shanghai , China
| | - Yan Hu
- Department of Orthopedics, Shanghai Sixth People' Hospital, Shanghai Jiao Tong University , Shanghai , China
| | - Yaochao Zhao
- Department of Orthopedics, Shanghai Sixth People' Hospital, Shanghai Jiao Tong University , Shanghai , China
| | - Mengqi Cheng
- Department of Orthopedics, Shanghai Sixth People' Hospital, Shanghai Jiao Tong University , Shanghai , China
| | - Hui Qin
- Department of Orthopedics, Shanghai Sixth People' Hospital, Shanghai Jiao Tong University , Shanghai , China
| | - Tao Cheng
- Department of Orthopedics, Shanghai Sixth People' Hospital, Shanghai Jiao Tong University , Shanghai , China
| | - Qiaojie Wang
- Department of Orthopedics, Shanghai Sixth People' Hospital, Shanghai Jiao Tong University , Shanghai , China
| | - Xiaochun Peng
- Department of Orthopedics, Shanghai Sixth People' Hospital, Shanghai Jiao Tong University , Shanghai , China
| | - Xianlong Zhang
- Department of Orthopedics, Shanghai Sixth People' Hospital, Shanghai Jiao Tong University , Shanghai , China
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Jämsen E, Kouri VP, Ainola M, Goodman SB, Nordström DC, Eklund KK, Pajarinen J. Correlations between macrophage polarizing cytokines, inflammatory mediators, osteoclast activity, and toll-like receptors in tissues around aseptically loosened hip implants. J Biomed Mater Res A 2016; 105:454-463. [DOI: 10.1002/jbm.a.35913] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2016] [Revised: 09/04/2016] [Accepted: 09/22/2016] [Indexed: 12/23/2022]
Affiliation(s)
- Eemeli Jämsen
- Department of Medicine, Clinicum; University of Helsinki, and Helsinki University Hospital; Helsinki Finland
| | - Vesa-Petteri Kouri
- Department of Medicine, Clinicum; University of Helsinki, and Helsinki University Hospital; Helsinki Finland
| | - Mari Ainola
- Department of Medicine, Clinicum; University of Helsinki, and Helsinki University Hospital; Helsinki Finland
| | - Stuart B. Goodman
- Orthopaedic Research Laboratories, Department of Orthopaedic Surgery; Stanford University School of Medicine; Stanford California
| | - Dan C. Nordström
- Department of Medicine, Clinicum; University of Helsinki, and Helsinki University Hospital; Helsinki Finland
- Internal Medicine and Rehabilitation; University of Helsinki and Helsinki University Hospital; Helsinki Finland
| | - Kari K. Eklund
- Department of Medicine, Clinicum; University of Helsinki, and Helsinki University Hospital; Helsinki Finland
- Rheumatology, University of Helsinki and Helsinki University Hospital; Helsinki Finland
| | - Jukka Pajarinen
- Orthopaedic Research Laboratories, Department of Orthopaedic Surgery; Stanford University School of Medicine; Stanford California
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Feng WM, Guo HH, Xue T, Wang X, Tang CW, Ying B, Gong H, Cui G. Polyelectrolyte multilayers assembled from IL-10 plasmid DNA and TGF-β siRNA facilitate chronic pancreatitis treatment. RSC Adv 2016. [DOI: 10.1039/c6ra06681j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Nanoparticles assembled with IL-10 plasmid DNA and TGF-β siRNA can reduce inflammation and fibrosis in mice with chronic pancreatitis (CP).
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Affiliation(s)
- Wen-ming Feng
- Department of General Surgery
- The First Affiliated Hospital
- Huzhou University
- China
| | - Hui-hui Guo
- Research Center
- The First Affiliated Hospital
- Huzhou University
- China
| | - Tao Xue
- Research Center
- The First Affiliated Hospital
- Huzhou University
- China
| | - Xiang Wang
- Research Center
- The First Affiliated Hospital
- Huzhou University
- China
| | - Cheng-wu Tang
- Department of General Surgery
- The First Affiliated Hospital
- Huzhou University
- China
| | - Bao Ying
- Department of General Surgery
- The First Affiliated Hospital
- Huzhou University
- China
| | - Hui Gong
- Research Center
- The First Affiliated Hospital
- Huzhou University
- China
| | - Ge Cui
- Department of Pathology
- First Affiliated Hospital of Huzhou University
- Huzhou
- China
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Molina ER, Smith BT, Shah SR, Shin H, Mikos AG. Immunomodulatory properties of stem cells and bioactive molecules for tissue engineering. J Control Release 2015; 219:107-118. [PMID: 26307349 DOI: 10.1016/j.jconrel.2015.08.038] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 08/13/2015] [Accepted: 08/19/2015] [Indexed: 02/06/2023]
Abstract
The immune system plays a crucial role in the success of tissue engineering strategies. Failure to consider the interactions between implantable scaffolds, usually containing cells and/or bioactive molecules, and the immune system can result in rejection of the implant and devastating clinical consequences. However, recent research into mesenchymal stem cells, which are commonly used in many tissue engineering applications, indicates that they may play a beneficial role modulating the immune system. Likewise, direct delivery of bioactive molecules involved in the inflammatory process can promote the success of tissue engineering constructs. In this article, we will review the various mechanisms in which modulation of the immune system is achieved through delivered bioactive molecules and cells and contextualize this information for future strategies in tissue engineering.
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Affiliation(s)
- Eric R Molina
- Department of Bioengineering, Rice University, Houston, TX 77030, USA
| | - Brandon T Smith
- Department of Bioengineering, Rice University, Houston, TX 77030, USA
| | - Sarita R Shah
- Department of Bioengineering, Rice University, Houston, TX 77030, USA
| | - Heungsoo Shin
- Department of Bioengineering, Rice University, Houston, TX 77030, USA; Department of Bioengineering, Hanyang University, Seoul 133-791, South Korea; BK21 Plus Future Biopharmaceutical Human Resources Training and Research Team, Hanyang University, Seoul 133-791, South Korea.
| | - Antonios G Mikos
- Department of Bioengineering, Rice University, Houston, TX 77030, USA.
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Pajarinen J, Tamaki Y, Antonios JK, Lin TH, Sato T, Yao Z, Takagi M, Konttinen YT, Goodman SB. Modulation of mouse macrophage polarization in vitro using IL-4 delivery by osmotic pumps. J Biomed Mater Res A 2014; 103:1339-45. [PMID: 25044942 DOI: 10.1002/jbm.a.35278] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2014] [Revised: 07/07/2014] [Accepted: 07/09/2014] [Indexed: 01/08/2023]
Abstract
Modulation of macrophage polarization is emerging as promising means to mitigate wear particle-induced inflammation and periprosthetic osteolysis. As a model for continuous local drug delivery, we used miniature osmotic pumps to deliver IL-4 in order to modulate macrophage polarization in vitro from nonactivated M0 and inflammatory M1 phenotypes towards a tissue regenerative M2 phenotype. Pumps delivered IL-4 into vials containing mouse bone marrow macrophage (mBMM) media. This conditioned media (CM) was collected at seven day intervals up to four weeks (week 1 to week 4 samples). IL-4 concentration in the CM was determined by ELISA and its biological activity was assayed by exposing M0 and M1 mBMMs to week 1 or week 4 CM. The IL-4 concentration in the CM approximated the mathematically calculated amount, and its biological activity was well retained, as both M0 and M1 macrophages exposed to either the week 1 or week 4 CM assumed M2-like phenotype as determined by qRT-PCR, ELISA, and immunocytochemistry. The results show that IL-4 can be delivered using osmotic pumps and that IL-4 delivered can modulate macrophage phenotype. Results build a foundation for in vivo studies using our previously validated animal models and provide possible strategies to locally mitigate wear particle-induced macrophage activation and periprosthetic osteolysis.
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Affiliation(s)
- Jukka Pajarinen
- Orthopaedic Research Laboratories, Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, California
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Goodman SB, Gibon E, Pajarinen J, Lin TH, Keeney M, Ren PG, Nich C, Yao Z, Egashira K, Yang F, Konttinen YT. Novel biological strategies for treatment of wear particle-induced periprosthetic osteolysis of orthopaedic implants for joint replacement. J R Soc Interface 2014; 11:20130962. [PMID: 24478281 DOI: 10.1098/rsif.2013.0962] [Citation(s) in RCA: 98] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Wear particles and by-products from joint replacements and other orthopaedic implants may result in a local chronic inflammatory and foreign body reaction. This may lead to persistent synovitis resulting in joint pain and swelling, periprosthetic osteolysis, implant loosening and pathologic fracture. Strategies to modulate the adverse effects of wear debris may improve the function and longevity of joint replacements and other orthopaedic implants, potentially delaying or avoiding complex revision surgical procedures. Three novel biological strategies to mitigate the chronic inflammatory reaction to orthopaedic wear particles are reported. These include (i) interference with systemic macrophage trafficking to the local implant site, (ii) modulation of macrophages from an M1 (pro-inflammatory) to an M2 (anti-inflammatory, pro-tissue healing) phenotype in the periprosthetic tissues, and (iii) local inhibition of the transcription factor nuclear factor kappa B (NF-κB) by delivery of an NF-κB decoy oligodeoxynucleotide, thereby interfering with the production of pro-inflammatory mediators. These three approaches have been shown to be viable strategies for mitigating the undesirable effects of wear particles in preclinical studies. Targeted local delivery of specific biologics may potentially extend the lifetime of orthopaedic implants.
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Affiliation(s)
- S B Goodman
- Department of Orthopaedic Surgery, Stanford University, , Stanford, CA, USA
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Inhibition of titanium particle-induced inflammation by the proteasome inhibitor bortezomib in murine macrophage-like RAW 264.7 cells. Inflammation 2013; 35:1411-8. [PMID: 22427154 DOI: 10.1007/s10753-012-9454-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Wear particle-induced inflammatory osteolysis is the major cause of aseptic loosening after total joint replacement. The predominant cell type within periprosthetic tissues is macrophages. We investigate the anti-inflammatory effects of the proteasome inhibitor bortezomib (Bzb) on murine macrophage-like RAW 264.7 cells stimulated with titanium (Ti) particles. RAW 264.7 cells were cultured with 1 nM Bzb and 0.1 mg/ml Ti particles for 48 h; cells without Ti and Bzb or without Bzb were used as negative and loading controls. Results showed that the expression of inflammatory cytokines (TNF-α, IL-1β, IL-6, and IL-10), chemokines [monocyte chemoattractant protein-1 (MCP-1), macrophage inflammatory protein-1 alpha (MIP-1α)], and inflammatory enzymes [inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2)] increased in RAW 264.7 cells cultured with Ti. Bzb treatment significantly reduced the expression of TNF-α, IL-1β, IL-6, MCP-1, MIP-1α, iNOS, and COX-2 and induced the expression of IL-10 in a time-dependent manner. These results suggest that Bzb inhibits Ti-induced inflammation in macrophages, and provide a promising therapeutic target for treating or preventing aseptic loosening.
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11
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Abstract
Total hip arthroplasty is one of the most commonly performed and successful elective orthopaedic procedures. However, numerous failure mechanisms limit the long-term success including aseptic osteolysis, aseptic loosening, infection, and implant instability. Aseptic osteolysis and subsequent implant failure occur because of a chronic inflammatory response to implant-derived wear particles. To reduce particulate debris and their consequences, implants have had numerous design modifications including high-molecular-weight polyethylene sockets and noncemented implants that rely on bone ingrowth for fixation. Surgical techniques have improved cementation with the use of medullary plugs, cement guns, lavage of the canal, pressurization, centralization of the stem, and reduction in cement porosity. Despite these advances, aseptic osteolysis continues to limit implant longevity. Numerous proinflammatory cytokines, such as interleukin-1, interleukin-6, tumor necrosis factor-alpha, and prostaglandin E2, have proosteoclastogenic effects in response to implant-derived wear particles. However, none of these cytokines represents a final common pathway for the process of particle-induced osteoclast differentiation and maturation. Recent work has identified the fundamental role of the RANKL-RANK-NF-kappaB pathway not only in osteoclastogenesis but also in the development and function the immune system. Thus, the immune system and skeletal homeostasis may be linked in the process of osteoclastogenesis and osteolysis.
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Affiliation(s)
- G Holt
- Department of Orthopaedic and Trauma Surgery, Southern General Hospital, Glasgow, Scotland, UK
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de Haar C, Hassing I, Bol M, Bleumink R, Pieters R. Ultrafine carbon black particles cause early airway inflammation and have adjuvant activity in a mouse allergic airway disease model. Toxicol Sci 2005; 87:409-18. [PMID: 16014737 DOI: 10.1093/toxsci/kfi255] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
To gain more insight into the mechanisms of particulate matter (PM)-induced adjuvant activity, we studied the kinetics of airway toxicity/inflammation and allergic sensitization to ovalbumin (OVA) in response to ultrafine carbon black particles (CBP). Mice were exposed intranasally to OVA alone or in combination with different concentrations of CBP. Airway toxicity and inflammation were assessed at days 4 and 8. Immune adjuvant effects were studied in the lung draining peribronchial lymph nodes (PBLN) at day 8. Antigen-specific IgE was measured at days 21 and 28, whereas allergic airway inflammation was studied after OVA challenges (day 28). Results show that a total dose of 200 microg CBP per mouse, but not 20 microg or 2 microg, induced immediate airway inflammation. This 200 microg CBP was the only dose that had immune adjuvant activity, by inducing enlargement of the PBLN and increasing OVA-specific production of Th2 cytokines (IL-4, IL-5, and IL-10). The immune adjuvant activity of 200 microg CBP dosing was further examined. Whereas increased OVA-specific IgE levels in serum on day 21 confirms systemic sensitization, this was further supported by allergic airway inflammation after challenges with OVA. Our data show a link between early airway toxicity and adjuvant effects of CBP. In addition, results indicate that local cytokine production early after exposure to CBP is predictive of allergic airway inflammation. In addition this model appears suitable for studying the role of airway toxicity, inflammation and other mechanisms of particle adjuvant activity, and predicting the adjuvant potential of different particles.
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Affiliation(s)
- Colin de Haar
- Department of Immunotoxicology, Institute for Risk Assessment Sciences, Utrecht University, The Netherlands.
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Suska F, Gretzer C, Esposito M, Emanuelsson L, Wennerberg A, Tengvall P, Thomsen P. In vivo cytokine secretion and NF-kappaB activation around titanium and copper implants. Biomaterials 2005; 26:519-27. [PMID: 15276360 DOI: 10.1016/j.biomaterials.2004.02.066] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2003] [Accepted: 02/24/2004] [Indexed: 11/23/2022]
Abstract
The early biological response at titanium (Ti), copper (Cu)-coated Ti and sham sites was evaluated in an in vivo rat model. Material surface chemical and topographical properties were characterized using Auger electron spectroscopy, energy dispersive X-ray spectroscopy and interferometry, respectively. The number of leukocytes, cell types and cell viability (release of lactate dehydrogenase) were determined in the implant-interface exudate. The contents of activated nuclear transcription factor NF-kappaB, interleukin-6 (IL-6) and interleukin-10 (IL-10) were determined by enzyme linked immunosorbent assay. An increase in the number of leukocytes, in particular, polymorphonuclear leukocytes, was observed between 12 and 48 h around Cu. A marked decrease of exudate cell viability was found around Cu after 48 h. The total amounts of activated NF-kappaB after 12 h was highest in Ti exudates whereas after 48 h the highest amount of NF-kappaB was detected around Cu. The levels of cytokine IL-6 were consistently high around Cu at both time periods. No differences in IL-10 contents were detected, irrespective of material/sham and time. The results show that materials with different toxicity grades (titanium with low and copper with high toxicity) exhibit early differences in the activation of NF-kappaB, extracellular expression and secretion of mediators, causing major differences in inflammatory cell accumulation and death in vivo.
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Affiliation(s)
- Felicia Suska
- Department of Biomaterials, Institute of Surgical Sciences, Sahlgrenska Academy at Göteborg University, Medicinaregatan 8B, Box 412, SE-40531 Göteborg, Sweden.
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Abstract
Wear and periprosthetic osteolysis of total joint replacements continue to be the most important problems in arthroplasty surgery. Despite the introduction of improved technologies including alternative bearing surfaces for TJRs, wear is inevitable because of relative movement at different interfaces and processes such as electrolysis and material degradation. Worn, clinically failing implants need to be followed closely and revised when appropriate. However, early wear and minor osteolysis do not result necessarily in progressive failure of the prosthesis. Indeed such cases may be followed up clinically and radiographically to establish the functional and biologic sequelae of wear and the timeline of these events. This scenario provides an opportunity to modulate the adverse biologic reaction associated with wear particles that includes chronic inflammation, the foreign body response, and periprosthetic bone destruction. Currently, immunological events associated with wear particles are becoming understood more clearly. Strategies to mitigate adverse processes associated with wear debris include local or systemic administration of immune modulators, signaling molecules, anti-inflammatory agents and growth factors, and altering osteoclast function. Ultimately, prevention of accelerated wear and periprosthetic osteolysis will be achieved with improved bearing surfaces and prosthetic designs.
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Affiliation(s)
- Stuart B Goodman
- Department of Orthopaedic Surgery and Division of Immunology and Rheumatology, Stanford University Medical Center, Stanford, CA 94305-5341, USA.
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