1
|
Zambiazi PJ, Lazar DRR, Otubo L, de Souza RFB, Oliveira Neto A, Chaves Guedes-Silva C. Exfoliation of titanium nitride using a non-thermal plasma process. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2024; 15:631-637. [PMID: 38887528 PMCID: PMC11181301 DOI: 10.3762/bjnano.15.53] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 05/15/2024] [Indexed: 06/20/2024]
Abstract
In this study, we present a novel approach for the exfoliation of titanium nitride (TiN) powders utilizing a rapid, facile, and environmentally friendly non-thermal plasma method. This method involves the use of an electric arc and nitrogen as the ambient gas at room temperature to generate ionized particles. These ionized species interact with the ceramic crystal of TiN, resulting in a pronounced structural expansion. The exfoliated TiN products were comprehensively characterized using transmission electron microscopy, X-ray diffraction, and Raman spectroscopy. Remarkably, the cubic crystal structure of TiN was effectively retained, while the (200) crystal plane d-spacing increased from 2.08 to 3.09 Å, accompanied by a reduction in crystallite size and alterations in Raman vibrational modes. Collectively, these findings provide compelling evidence for the successful exfoliation of TiN structures using our innovative non-thermal plasma method, opening up exciting possibilities for advanced material applications.
Collapse
Affiliation(s)
- Priscila Jussiane Zambiazi
- Instituto de Pesquisas Energéticas e Nucleares, IPEN/CNEN-SP, Av. Prof. Lineu Prestes, 2242 Cidade Universitária, São Paulo, SP, CEP 05508-000, Brazil
| | - Dolores Ribeiro Ricci Lazar
- Instituto de Pesquisas Energéticas e Nucleares, IPEN/CNEN-SP, Av. Prof. Lineu Prestes, 2242 Cidade Universitária, São Paulo, SP, CEP 05508-000, Brazil
| | - Larissa Otubo
- Instituto de Pesquisas Energéticas e Nucleares, IPEN/CNEN-SP, Av. Prof. Lineu Prestes, 2242 Cidade Universitária, São Paulo, SP, CEP 05508-000, Brazil
| | - Rodrigo Fernando Brambilla de Souza
- Instituto de Pesquisas Energéticas e Nucleares, IPEN/CNEN-SP, Av. Prof. Lineu Prestes, 2242 Cidade Universitária, São Paulo, SP, CEP 05508-000, Brazil
| | - Almir Oliveira Neto
- Instituto de Pesquisas Energéticas e Nucleares, IPEN/CNEN-SP, Av. Prof. Lineu Prestes, 2242 Cidade Universitária, São Paulo, SP, CEP 05508-000, Brazil
| | - Cecilia Chaves Guedes-Silva
- Instituto de Pesquisas Energéticas e Nucleares, IPEN/CNEN-SP, Av. Prof. Lineu Prestes, 2242 Cidade Universitária, São Paulo, SP, CEP 05508-000, Brazil
| |
Collapse
|
2
|
Martins GM, da Silva Braz JKF, de Macedo MF, de Oliveira Vitoriano J, Alves Júnior C, Santos CS, Feijó FMC, de Oliveira MF, de Moura CEB. Enhancing Titanium Disk Performance through In-Pack Cold Atmospheric Plasma Treatment. ACS Biomater Sci Eng 2024; 10:1765-1773. [PMID: 38357873 DOI: 10.1021/acsbiomaterials.3c01388] [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] [Indexed: 02/16/2024]
Abstract
While titanium dental implants have already been clinically established, ongoing research is continuously being conducted to advance the fields of osseointegration and bacterial resistance, seeking further improvements in these areas. In this study, we introduce an innovative method for treating titanium surfaces within tightly sealed packaging. Specifically, titanium discs, enclosed in surgical-grade packaging, underwent treatment using cold atmospheric plasma (CAP). The surfaces were thoroughly characterized in terms of wettability, crystalline structure, and chemical composition. Hemocompatibility analyses were conducted using blood diluted in sodium citrate (1:9) exposed to titanium discs for 30 min inside a CO2 incubator at 37 °C. Subsequently, various blood parameters were evaluated, including prothrombin time (PT), activated partial thromboplastin time (APTT), and platelet adhesion. Microbiological analyses were also performed using Pseudomonas aeruginosa (ATCC 27853) for 4 h at 37 °C. The treatment with CAP Jet resulted in a reduction in contact angle without causing any changes in the crystalline structure. No statistically significant differences were observed in the blood parameters. The plasma-treated samples exhibited lower PT and APTT values compared to those of the control group. The surfaces treated with CAP Jet showed increased platelet activation, platelet density, and thrombus formation when compared with the untreated samples. Moreover, the treated surfaces demonstrated lower bacterial colony formation compared with other surfaces.
Collapse
Affiliation(s)
- Gabriel Moura Martins
- Department of Health Sciences, Federal University of Rio Grande do Norte (UFRN), Campus Universitário UFRN, Lagoa Nova, 9078-970 Natal, RN, Brazil
| | | | - Michelly Fernandes de Macedo
- Department of Animal Sciences, Federal Rural University of Semi-Arid Region (UFERSA), Av. Francisco Mota, 572, Costa e Silva, 59625-900 Mossoró, RN, Brazil
| | - Jussier de Oliveira Vitoriano
- Plasma Laboratory Applied to Agriculture, Health and Environment, UFERSA, Av. Francisco Mota, 572, Costa e Silva, 59625-900 Mossoró, RN, Brazil
| | - Clodomiro Alves Júnior
- Department of Health Sciences, Federal University of Rio Grande do Norte (UFRN), Campus Universitário UFRN, Lagoa Nova, 9078-970 Natal, RN, Brazil
- Aeronautics Institute of Technology, Praça Marechal Eduardo Gomes, 50 - Vila das Acacias, 12228-900 São José dos Campos, SP, Brazil
- Plasma Laboratory Applied to Agriculture, Health and Environment, UFERSA, Av. Francisco Mota, 572, Costa e Silva, 59625-900 Mossoró, RN, Brazil
| | - Caio Sérgio Santos
- Laboratory of Veterinary Microbiology, Center of Agrarian Sciences, Federal Rural, UFERSA, 59625-900 Mossoró, Brazil
| | | | - Moacir Franco de Oliveira
- Department of Animal Sciences, Federal Rural University of Semi-Arid Region (UFERSA), Av. Francisco Mota, 572, Costa e Silva, 59625-900 Mossoró, RN, Brazil
| | - Carlos Eduardo Bezerra de Moura
- Department of Animal Sciences, Federal Rural University of Semi-Arid Region (UFERSA), Av. Francisco Mota, 572, Costa e Silva, 59625-900 Mossoró, RN, Brazil
| |
Collapse
|
3
|
Gil HM, Booth Z, Price TW, Lee J, Naylor-Adamson L, Avery M, Muravitskaya A, Hondow N, Allsup D, Schneider JE, Naseem K, Adawi AM, Bouillard JSG, Chamberlain TW, Calaminus SDJ, Stasiuk GJ. Impact of Surface Ligand on the Biocompatibility of InP/ZnS Quantum Dots with Platelets. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2304881. [PMID: 37946631 DOI: 10.1002/smll.202304881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 10/24/2023] [Indexed: 11/12/2023]
Abstract
InP/ZnS quantum dots (QDs) have received a large focus in recent years as a safer alternative to heavy metal-based QDs. Given their intrinsic fluorescent imaging capabilities, these QDs can be potentially relevant for in vivo platelet imaging. The InP/ZnS QDs are synthesized and their biocompatibility investigated through the use of different phase transfer agents. Analysis of platelet function indicates that platelet-QD interaction can occur at all concentrations and for all QD permutations tested. However, as the QD concentration increases, platelet aggregation is induced by QDs alone independent of natural platelet agonists. This study helps to define a range of concentrations and coatings (thioglycolic acid and penicillamine) that are biocompatible with platelet function. With this information, the platelet-QD interaction can be identified using multiple methods. Fluorescent lifetime imaging microscopy (FLIM) and confocal studies have shown QDs localize on the surface of the platelet toward the center while showing evidence of energy transfer within the QD population. It is believed that these findings are an important stepping point for the development of fluorescent probes for platelet imaging.
Collapse
Affiliation(s)
- Hélio M Gil
- Department of Imaging Chemistry and Biology, School of Biomedical Engineering and Imaging Sciences, King's College London, London, SE1 7EH, UK
- Centre for Biomedicine, Hull York Medical School, University of Hull, Hull, HU6 7RX, UK
| | - Zoe Booth
- Centre for Biomedicine, Hull York Medical School, University of Hull, Hull, HU6 7RX, UK
| | - Thomas W Price
- Department of Imaging Chemistry and Biology, School of Biomedical Engineering and Imaging Sciences, King's College London, London, SE1 7EH, UK
| | - Jessica Lee
- Centre for Biomedicine, University of Hull, Hull , HU6 7RX, UK
| | - Leigh Naylor-Adamson
- Centre for Biomedicine, Hull York Medical School, University of Hull, Hull, HU6 7RX, UK
| | - Michelle Avery
- Centre for Biomedicine, University of Hull, Hull , HU6 7RX, UK
| | - Alina Muravitskaya
- Department of Physics and Mathematics, University of Hull, Hull , HU6 7RX, UK
| | - Nicole Hondow
- School of Chemical and Process Engineering, University of Leeds, Leeds, LS2 9JT, UK
| | - David Allsup
- Centre for Biomedicine, Hull York Medical School, University of Hull, Hull, HU6 7RX, UK
| | | | - Khalid Naseem
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, LS2 9JT, UK
| | - Ali M Adawi
- Department of Physics and Mathematics, University of Hull, Hull , HU6 7RX, UK
| | | | - Thomas W Chamberlain
- Institute of Process Research and Development School of Chemistry, University of Leeds, Leeds, LS2 9JT, UK
| | - Simon D J Calaminus
- Centre for Biomedicine, Hull York Medical School, University of Hull, Hull, HU6 7RX, UK
| | - Graeme J Stasiuk
- Department of Imaging Chemistry and Biology, School of Biomedical Engineering and Imaging Sciences, King's College London, London, SE1 7EH, UK
| |
Collapse
|
4
|
Kim YS, Cho ES, Park CH, Cha HG. The effects of 4-week inhalation exposure to titanium nitride on lungs of Sprague-Dawley rats. Toxicol Res 2023; 39:157-167. [PMID: 36726833 PMCID: PMC9839920 DOI: 10.1007/s43188-022-00162-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 11/25/2022] [Accepted: 11/28/2022] [Indexed: 12/14/2022] Open
Abstract
Titanium nitride (TiN) is a ceramic material with physical properties such as extreme hardness, high decomposition temperature, defect structure, and gold-yellow color. TiN is generally considered non-toxic and safe; however, hazards have not been identified, especially in workers after inhalation exposure. Here, we conducted a four-week inhalation toxicity study of TiN using a nose-only inhalation exposure system in Sprague-Dawley rats. Rats were exposed to TiN for 4 weeks (6 h a day, 5 days per week) at target concentrations of 45, 90, and 180 mg/m3. Clinical signs, mean body weight changes, hematology, blood biochemistry, necropsy, organ weight, bronchoalveolar lavage fluid analysis, and histopathological findings were observed. Analytical concentrations of the low, middle, and high-concentration groups were 45.55 ± 3.18 mg/m3, 90.69 ± 7.30 mg/m3, and 183.87 ± 15.21 mg/m3, respectively. The mass median aerodynamic diameter (MMAD) for the low, middle, and high-concentration groups were 1.44 ± 0.07 μm, 1.47 ± 0.18 μm, and 1.68 ± 0.16 μm, and the geometric standard deviation (GSD) was 2.24 ± 0.03, 2.31 ± 0.16, and 2.43 ± 0.11, respectively. No systemic adverse effects were observed after inhalation exposure to TiN; however, histopathological findings (increased phagocytic macrophages and alveolar/bronchiolar epithelial hyperplasia) and Bronchoalveolar Lavage Fluid (BALF) analysis (elevated lactate dehydrogenase and gamma-glutamyltransferase values) showed adverse effects on the lungs in the middle and high-concentration groups. Based on these results, the no observed adverse effect concentration (NOAEC) is suggested to be 45 mg/m3.
Collapse
Affiliation(s)
- Yong-Soon Kim
- Chemical Research Bureau, Occupational Safety and Health Research Institute, Korea Occupational Safety and Health Agency, Daejeon, 34122 Republic of Korea
| | - Eun-Sang Cho
- Chemical Research Bureau, Occupational Safety and Health Research Institute, Korea Occupational Safety and Health Agency, Daejeon, 34122 Republic of Korea
| | - Chan-Hyuck Park
- Eastern Seoul Area Office, Korea Occupational Safety and Health Agency, Seoul, 05836 Republic of Korea
| | - Hyo-Geun Cha
- Chemical Research Bureau, Occupational Safety and Health Research Institute, Korea Occupational Safety and Health Agency, Daejeon, 34122 Republic of Korea
| |
Collapse
|
5
|
Seo D, Major TC, Kang DH, Seo S, Lee K, Bartlett RH, Kim J. Polydiacetylene Liposome Microarray toward Facile Measurement of Platelet Activation in Whole Blood. ACS Sens 2021; 6:3170-3175. [PMID: 34291908 DOI: 10.1021/acssensors.1c01167] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The necessity of a simple measurement of platelet activation has been increasing in clinical medicine to regulate the proper dose of the antiplatelet drugs for patients having clinical outcomes in acute situations such as angina pectoris, stroke, or peripheral vascular disease or procedures involving angioplasty or coronary thrombolysis. We developed a self-signaling polydiacetylene (PDA) liposome microarray to detect activated platelets from whole blood samples in a single step. A specific antibody, 9F9 antibody, to platelet-bound fibrinogen was selected and conjugated to the PDA liposome microarray to quantify the fibrinogen-bound platelets. The developed PDA liposome-9F9 microarray generated an intense fluorescence signal when activated platelets in whole blood were introduced and also successfully distinguished the reduced platelet activation in the presence of Tirofiban, a model antiplatelet drug. The results of this single-step benchtop assay incorporates simple, sensitive, and rapid attributes that can detect the extent of platelet activation prior to needed clinical procedures.
Collapse
Affiliation(s)
- Deokwon Seo
- Program in Nanoscience and Technology, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, 08826, Republic of Korea
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Terry C. Major
- Department of Surgery, University of Michigan Medical School, Ann Arbor, Michigan 48109, United States
| | - Do Hyun Kang
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Sungbaek Seo
- Macromolecular Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Kangwon Lee
- Program in Nanoscience and Technology, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, 08826, Republic of Korea
| | - Robert H. Bartlett
- Department of Surgery, University of Michigan Medical School, Ann Arbor, Michigan 48109, United States
| | - Jinsang Kim
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
- Macromolecular Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
- Biointerfaces Institute, University of Michigan, Ann Arbor, Michigan 48109, United States
| |
Collapse
|
6
|
Mao S, Sarkar A, Wang Y, Song C, LeVine D, Wang X, Que L. Microfluidic chip grafted with integrin tension sensors for evaluating the effects of flowing shear stress and ROCK inhibitor on platelets. LAB ON A CHIP 2021; 21:3128-3136. [PMID: 34180491 PMCID: PMC8353964 DOI: 10.1039/d1lc00259g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Accepted: 06/17/2021] [Indexed: 06/13/2023]
Abstract
Integrins are key players in platelet adhesion and aggregation. Integrin molecular tensions, the forces transmitted by integrin molecules, are regulated by both mechanical and biochemical cues, and the outside-in and inside-out signaling has been extensively studied. While the mechanical properties of platelets at static status have been studied by atomic force microscopy, traction force microscopy and tension sensors, the biomechanical properties of flowing platelets remain elusive. Herein, we report microfluidic chips grafted with integrin tension sensors for microfluidic-force mapping in platelets. Specifically, the process of integrin αIIbβ3 mediating tension transmission and platelet adhesion under low flow rates has been obtained, and the process of platelet clustering at post-stenotic regions has been demonstrated. We found that flowing shear force can postpone the integrin-mediated tension transmission and platelet adhesion. We further evaluated the effect of Y-27632, a ROCK inhibitor that has been proven to reduce integrin-mediated platelet adhesion, at a series of concentrations and demonstrated that microfluidic chips with integrin tension sensors are sensitive to the concentration-dependent effects of Y-27632. Given their low cost and scalable throughput, these chips are ideal technical platforms for biological studies of platelets at flowing status and for platelet inhibitor or potential antiplatelet drug screening.
Collapse
Affiliation(s)
- Subin Mao
- Electrical and Computer Engineering Department, Iowa State University, Ames, USA50011.
| | - Anwesha Sarkar
- Electrical and Computer Engineering Department, Iowa State University, Ames, USA50011. and Department of Physics and Astronomy, Iowa State University, Ames, USA50011.
| | - Yongliang Wang
- Department of Physics and Astronomy, Iowa State University, Ames, USA50011.
| | - Chao Song
- Electrical and Computer Engineering Department, Iowa State University, Ames, USA50011.
| | - Dana LeVine
- Veterinary Clinical Sciences, Iowa State University, Ames, USA50011
| | - Xuefeng Wang
- Department of Physics and Astronomy, Iowa State University, Ames, USA50011.
| | - Long Que
- Electrical and Computer Engineering Department, Iowa State University, Ames, USA50011.
| |
Collapse
|
7
|
Tsiapla AR, Karagkiozaki V, Bakola V, Pappa F, Gkertsiou P, Pavlidou E, Logothetidis S. Biomimetic and biodegradable cellulose acetate scaffolds loaded with dexamethasone for bone implants. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2018; 9:1986-1994. [PMID: 30116690 PMCID: PMC6071698 DOI: 10.3762/bjnano.9.189] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Accepted: 06/24/2018] [Indexed: 06/08/2023]
Abstract
There is, as a matter of fact, an ever increasing number of patients requiring total hip replacement (Pabinger, C.; Geissler, A. Osteoarthritis Cartilage2014,22, 734-741). Implant-associated acute inflammations after an invasive orthopedic surgery are one of the major causes of implant failure. In addition, there are instability, aseptic loosening, infection, metallosis and fracture (Melvin, J. S.; Karthikeyan, T.; Cope, R.; Fehring, T. K. J. Arthroplasty2014,29, 1285-1288). In this work, a drug-delivery nanoplatform system consisting of polymeric celluloce acetate (CA) scaffolds loaded with dexamethasone was fabricated through electrospinning. Atomic force microscopy (AFM) and scanning electron microscopy (SEM) indicated the successful fabrication of these structures. Cytotoxicity studies were performed by using MTT assay, methylene-blue staining and SEM fixation and showed very good cell adhesion and proliferation, indicating the cytocompatibility of these fibrous scaffolds. Drug-release kinetics was measured for the evaluation of a controllable and sustained release of anti-inflammatory drug onto the engineered implants and degradation study was conducted in order to assess the mass loss of polymers. This drug-delivery nanoplatform as coating on titanium implants may be a promising approach not only to alleviate but also to prevent implant-associated acute inflammations along with a simultaneous controlled release of the drug.
Collapse
Affiliation(s)
- Aikaterini-Rafailia Tsiapla
- Lab for “Thin Films - Nanosystems & Nanometrology”, Nanomedicine Group, Department of Physics, Aristotle University of Thessaloniki, Greece
| | - Varvara Karagkiozaki
- Lab for “Thin Films - Nanosystems & Nanometrology”, Nanomedicine Group, Department of Physics, Aristotle University of Thessaloniki, Greece
- BL NanoBiomed P.C. Thessaloniki, Greece
| | - Veroniki Bakola
- Lab for “Thin Films - Nanosystems & Nanometrology”, Nanomedicine Group, Department of Physics, Aristotle University of Thessaloniki, Greece
- BL NanoBiomed P.C. Thessaloniki, Greece
| | - Foteini Pappa
- Lab for “Thin Films - Nanosystems & Nanometrology”, Nanomedicine Group, Department of Physics, Aristotle University of Thessaloniki, Greece
| | - Panagiota Gkertsiou
- Lab for “Thin Films - Nanosystems & Nanometrology”, Nanomedicine Group, Department of Physics, Aristotle University of Thessaloniki, Greece
| | - Eleni Pavlidou
- Department of Physics, Aristotle University of Thessaloniki, Greece
| | - Stergios Logothetidis
- Lab for “Thin Films - Nanosystems & Nanometrology”, Nanomedicine Group, Department of Physics, Aristotle University of Thessaloniki, Greece
| |
Collapse
|
8
|
Tsiapla A, Karagkiozaki V, Pappa F, Bakola V, Choli-Papadopoulou T, Moutsios I, Pavlidou E, Laskarakis A, Logothetidis S. Drug delivery nanoplatform for orthopaedic-associated infections. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.matpr.2017.07.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
9
|
Perli M, Karagkiozaki V, Pappa F, Moutsios I, Tzounis L, Zachariadis A, Gravalidis C, Laskarakis A, Logothetidis S. Synthesis and Characterization of Ag Nanoparticles for Orthopaedic applications. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.matpr.2017.07.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
10
|
Campelo CS, Chevallier P, Vaz JM, Vieira RS, Mantovani D. Sulfonated chitosan and dopamine based coatings for metallic implants in contact with blood. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 72:682-691. [PMID: 28024638 DOI: 10.1016/j.msec.2016.11.133] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Revised: 11/01/2016] [Accepted: 11/26/2016] [Indexed: 11/28/2022]
Abstract
Thrombosis and calcification constitute the main clinical problems when blood-interacting devices are implanted in the body. Coatings with thin polymer layers represent an acknowledged strategy to modulate interactions between the material surface and the blood environment. To ensure the implant success, at short-term the coating should limit platelets adhesion and delay the clot formation, and at long-term it should delay the calcification process. Sulfonated chitosan, if compared to native chitosan, shows the unique ability to reduce proteins adsorption, decrease thrombogenic properties and limit calcification. In this work, stainless steel surfaces, commonly used for cardiovascular applications, were coated with sulfonated chitosan, by using dopamine and PEG as anchors, and the effect of these grafted surfaces on platelet adhesion, clot formation as well as on calcification were investigated. Surface characterization techniques evidenced that the coating formation was successful, and the sulfonated chitosan grafted sample exhibited a higher roughness and hydrophilicity, if compared to native chitosan one. Moreover, sulfonated surface limited platelet activation and the process of clot formation, thus confirming its high biological performances in blood. Calcium deposits were also lower on the sulfonated chitosan sample compared to the chitosan one, thus showing that calcification was minimal in presence of sulfonate groups. In conclusion, this sulfonated-modified surface has potential to be as blood-interacting material.
Collapse
Affiliation(s)
- Clayton S Campelo
- Lab Biomaterials and Bioengineering, CRC-Tier I, Department of Min-Met-Materials Engineering, Laval University & CHU de Quebec Research Center, G1V 0A6 Quebec City, QC, Canada; Federal University of Ceará, Department of Chemical Engineering, Campus do Pici - Bloco 709, Fortaleza, Ceará 60455-760, Brazil
| | - Pascale Chevallier
- Lab Biomaterials and Bioengineering, CRC-Tier I, Department of Min-Met-Materials Engineering, Laval University & CHU de Quebec Research Center, G1V 0A6 Quebec City, QC, Canada
| | - Juliana M Vaz
- Lab Biomaterials and Bioengineering, CRC-Tier I, Department of Min-Met-Materials Engineering, Laval University & CHU de Quebec Research Center, G1V 0A6 Quebec City, QC, Canada
| | - Rodrigo S Vieira
- Federal University of Ceará, Department of Chemical Engineering, Campus do Pici - Bloco 709, Fortaleza, Ceará 60455-760, Brazil.
| | - Diego Mantovani
- Lab Biomaterials and Bioengineering, CRC-Tier I, Department of Min-Met-Materials Engineering, Laval University & CHU de Quebec Research Center, G1V 0A6 Quebec City, QC, Canada.
| |
Collapse
|
11
|
The melding of nanomedicine in thrombosis imaging and treatment: a review. Future Sci OA 2016; 2:FSO113. [PMID: 28031960 PMCID: PMC5138016 DOI: 10.4155/fso.16.3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Accepted: 02/12/2016] [Indexed: 12/14/2022] Open
Abstract
Thromboembolic diseases constitute a plague in our century, wherein an imbalance of hemostasis leads to thrombus formation and vessels constriction reducing blood flow. Hence, the recent rise of nanomedicine gives birth to advanced diagnostic modalities and therapeutic agents for the early diagnosis and treatment of such diseases. Multimodal nanoagents for the detection of intravascular thrombi and nanovehicles for thrombus-targeted fibrinolytic therapy are few paradigms of nanomedicine approaches to overcome current diagnostic treatment roadblocks and persistent clinical needs. This review highlights the nanomedicine strategies to improve the imaging and therapy of acute thrombi by nanoparticles and nanotheranostics, the detailed imaging of thrombogenic proteins and platelets via atomic force microscopy with the knowledge basis of thrombosis pathophysiology and nanotoxicity. Lay abstract: The present review highlights the perspectives of nanomedicine in enhancing the diagnostic and therapeutic strategies to deal with thrombosis. The basics in thrombosis are highlighted to provide the reader with better comprehension of the application of nanotools and various multimodal nanocarriers for diagnosis, targeted therapy and monitoring of the disease. The visualization and treatment of acute thrombi using multifunctional nanoparticles and nanotheranostics, along with the structural investigation of the blood-clotting proteins exploiting the atomic force microscopy capabilities are comprehensively described. At the same time, toxicity and biocompatibility issues regarding nanoparticles are discussed.
Collapse
|
12
|
In vitro evaluation of anti-calcification and anti-coagulation on sulfonated chitosan and carrageenan surfaces. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 59:241-248. [DOI: 10.1016/j.msec.2015.10.020] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Revised: 07/12/2015] [Accepted: 10/07/2015] [Indexed: 11/20/2022]
|
13
|
Sovak G, Gotman I, Weiss A. Osseointegration of Ti-6Al-4V alloy implants with a titanium nitride coating produced by a PIRAC nitriding technique: a long-term time course study in the rat. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2015; 21:179-189. [PMID: 25482093 DOI: 10.1017/s1431927614013634] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This study examined bone tissue responses to Ti-6Al-4V alloy implants with a hard TiN coating applied by an original powder immersion reaction-assisted coating (PIRAC) nitriding method. Progression of implant fixation in the distal epiphysis and within the medullary cavity of the rat femur was evaluated between 3 days and 6 months postimplantation by scanning electron microscopy, oxytetracycline incorporation, and histochemistry. After 6 months, successful osseointegration was achieved in both epiphyseal and diaphyseal sites. Throughout, implant portions located within the epiphysis remained in close contact with bone trabeculae that gradually engulfed the implant forming a bone collar continuous with the trabecular network of the epiphysis. In the diaphysis, woven bone was first formed within the marrow cavity around the implant and later was replaced by a shell of compact bone around the implant. In general, higher osseointegration rates were measured for TiN-coated versus the uncoated implants, both in the epiphysis and in the diaphysis. In conclusion, our findings indicate an excellent long-term biocompatibility of TiN coatings applied by the PIRAC nitriding technique and superior osteoinductive ability in comparison with uncoated Ti-6Al-4V alloy. Such coatings can, therefore, be considered for improving the corrosion and wear resistance of titanium-based orthopedic implants.
Collapse
Affiliation(s)
- Guy Sovak
- 1Department of Anatomy,Canadian Memorial Chiropractic College,Toronto,ON M2H 3J1,Canada
| | - Irena Gotman
- 2The Faculty of Materials Engineering,Technion-Israel Institute of Technology,Haifa 31096,Israel
| | - Anna Weiss
- 3Department of Anatomy and Cell Biology, The Bruce Rappaport Faculty of Medicine,Technion-Israel Institute of Technology,Haifa 3200003,Israel
| |
Collapse
|
14
|
Bone response to surface-modified titanium implants: studies on the early tissue response to implants with different surface characteristics. Int J Biomater 2013; 2013:412482. [PMID: 24174936 PMCID: PMC3794548 DOI: 10.1155/2013/412482] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Revised: 08/07/2013] [Accepted: 08/07/2013] [Indexed: 11/24/2022] Open
Abstract
In a series of experimental studies, the bone formation around systematically modified titanium implants is analyzed. In the present study, three different surface modifications were prepared and evaluated. Glow-discharge cleaning and oxidizing resulted in a highly stoichiometric TiO2 surface, while a glow-discharge treatment in nitrogen gas resulted in implants with essentially a surface of titanium nitride, covered with a very thin titanium oxide. Finally, hydrogen peroxide treatment of implants resulted in an almost stoichiometric TiO2, rich in hydroxyl groups on the surface. Machined commercially pure titanium implants served as controls. Scanning Auger Electron Spectroscopy, Scanning Electron Microscopy, and Atomic Force Microscopy revealed no significant differences in oxide thickness or surface roughness parameters, but differences in the surface chemical composition and apparent topography were observed. After surface preparation, the implants were inserted in cortical bone of rabbits and evaluated after 1, 3, and 6 weeks. Light microscopic evaluation of the tissue response showed that all implants were in contact with bone and had a large proportion of newly formed bone within the threads after 6 weeks. There were no morphological differences between the four groups. Our study shows that a high degree of bone contact and bone formation can be achieved with titanium implants of different surface composition and topography.
Collapse
|
15
|
Wang Y, Wen C, Hodgson P, Li Y. Biocompatibility of TiO2 nanotubes with different topographies. J Biomed Mater Res A 2013; 102:743-51. [PMID: 23554372 DOI: 10.1002/jbm.a.34738] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Revised: 03/15/2013] [Accepted: 03/25/2013] [Indexed: 02/01/2023]
Abstract
The biological response of osteoblast cells to implant materials depends on the topography and physico-chemistry of the implant surface and this determines the cell behavior such as shaping, adhesion and proliferation, and finally the cell fate. In this study, titanium (Ti) was anodized to create different topographies of titania nanotubes (TNTs) to investigate the cell behavior to them. TNTs with and without a highly ordered nanoporous layer on their top surface were fabricated using two-step and one-step anodizing processes, respectively. The TNTs without a highly ordered nanoporous layer on the top surface exhibited a rougher surface, higher surface energy and better hydrophilicity than the TNTs with such a layer. Osteoblast-like cells (SaOS2) were used to assess the biocompatibility of the TNTs with different topographies in comparison to bare cp-Ti. Results indicated that TNTs can enhance the proliferation and adhesion of osteoblast-like cells. TNTs without a highly ordered nanoporous layer exhibited better biocompatibility than the TNTs covered by such a nanoporous layer. Cell morphology observation using confocal microscopy and SEM indicated that SaOS2 cells that were adhered to the TNTs without the highly ordered nanoporous layer showed the longest filopodia compared to TNTs with a highly ordered nanoporous layer and bare cp-Ti.
Collapse
Affiliation(s)
- Yu Wang
- Institute for Frontier Materials, Deakin University, Geelong, Victoria, 3217, Australia
| | | | | | | |
Collapse
|
16
|
E. Kehrel B, F. Brodde M. State of the art in platelet function testing. Transfus Med Hemother 2013; 40:73-86. [PMID: 23653569 PMCID: PMC3638976 DOI: 10.1159/000350469] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2013] [Accepted: 03/05/2013] [Indexed: 12/20/2022] Open
Abstract
Platelets perform many functions in hemostasis but also in other areas of physiology and pathology. Therefore, it is obvious that many different function tests have been developed, each one conceived and standardized for a special purpose. This review will summarize the different fields in which platelet function testing is currently in use; diagnostics of patients with bleeding disorders, monitoring patients' response to anti-platelet therapy, monitoring in transfusion medicine (blood donors, platelet concentrates, and after transfusion), and monitoring in perioperative medicine to predict bleeding tendency. The second part of the review outlines different methods for platelet function testing, spanning bleeding time, and platelet counting as well as determining platelet adhesion, platelet secretion, platelet aggregation, platelet morphology, platelet signal transduction, platelet procoagulant activity, platelet apoptosis, platelet proteomics, and molecular biology.
Collapse
Affiliation(s)
- Beate E. Kehrel
- Department of Anesthesiology, Intensive Care and Pain Medicine, Experimental and Clinical Hemostasis, University of Münster, Germany
| | - Martin F. Brodde
- Department of Anesthesiology, Intensive Care and Pain Medicine, Experimental and Clinical Hemostasis, University of Münster, Germany
- OxProtect GmbH, Münster, Germany
| |
Collapse
|
17
|
Karagkiozaki V, Karagiannidis PG, Gioti M, Kavatzikidou P, Georgiou D, Georgaraki E, Logothetidis S. Bioelectronics meets nanomedicine for cardiovascular implants: PEDOT-based nanocoatings for tissue regeneration. Biochim Biophys Acta Gen Subj 2013; 1830:4294-304. [PMID: 23291427 DOI: 10.1016/j.bbagen.2012.12.019] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2012] [Revised: 12/13/2012] [Accepted: 12/18/2012] [Indexed: 11/17/2022]
Abstract
BACKGROUND An exciting direction in nanomedicine would be to analyze how living cells respond to conducting polymers. Their application for tissue regeneration may advance the performance of drug eluting stents by addressing the delayed stent re-endothelialization and late stent thrombosis. METHODS The suitability of poly (3, 4-ethylenedioxythiophene) (PEDOT) thin films for stents to promote cell adhesion and proliferation is tested in correlation with doping and physicochemical properties. PEDOT doped either with poly (styrenesulfonate) (PSS) or tosylate anion (TOS) was used for films' fabrication by spin coating and vapor phase polymerization respectively. PEGylation of PEDOT: TOS for reduced immunogenicity and biofunctionalization of PEDOT: PSS with RGD peptides for induced cell proliferation was further applied. Atomic Force Microscopy and Spectroscopic Ellipsometry were implemented for nanotopographical, structural, optical and conductivity measurements in parallel with wettability and protein adsorption studies. Direct and extract testing of cell viability and proliferation of L929 fibroblasts on PEDOT samples by MTT assay in line with SEM studies follow. RESULTS All PEDOT thin films are cytocompatible and promote human serum albumin adsorption. PEDOT:TOS films were found superior regarding cell adhesion as compared to controls. Their nanotopography and hydrophilicity are significant factors that influence cytocompatibility. PEGylation of PEDOT:TOS increases their conductivity and hydrophilicity with similar results on cell viability with bare PEDOT:TOS. The biofunctionalized PEDOT:PSS thin films show enhanced cell proliferation. CONCLUSIONS The application of PEDOT polymers has evolved as a new perspective to advance stents. GENERAL SIGNIFICANCE In this work, nanomedicine involving nanotools and novel nanomaterials merges with bioelectronics to stimulate tissue regeneration for cardiovascular implants. This article is part of a Special Issue entitled Organic Bioelectronics - Novel Applications in Biomedicine.
Collapse
Affiliation(s)
- V Karagkiozaki
- Lab for Thin Films-Nanosystems and Nanometrology LTFN, Physics Department, Aristotle University of Thessaloniki, GR-54124, Greece
| | | | | | | | | | | | | |
Collapse
|
18
|
Karagkiozaki V, Karagiannidis PG, Kalfagiannis N, Kavatzikidou P, Patsalas P, Georgiou D, Logothetidis S. Novel nanostructured biomaterials: implications for coronary stent thrombosis. Int J Nanomedicine 2012; 7:6063-76. [PMID: 23269867 PMCID: PMC3529651 DOI: 10.2147/ijn.s34320] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Background Nanomedicine has the potential to revolutionize medicine and help clinicians to treat cardiovascular disease through the improvement of stents. Advanced nanomaterials and tools for monitoring cell–material interactions will aid in inhibiting stent thrombosis. Although titanium boron nitride (TiBN), titanium diboride, and carbon nanotube (CNT) thin films are emerging materials in the biomaterial field, the effect of their surface properties on platelet adhesion is relatively unexplored. Objective and methods In this study, novel nanomaterials made of amorphous carbon, CNTs, titanium diboride, and TiBN were grown by vacuum deposition techniques to assess their role as potential stent coatings. Platelet response towards the nanostructured surfaces of the samples was analyzed in line with their physicochemical properties. As the stent skeleton is formed mainly of stainless steel, this material was used as reference material. Platelet adhesion studies were carried out by atomic force microscopy and scanning electron microscopy observations. A cell viability study was performed to assess the cytocompatibility of all thin film groups for 24 hours with a standard immortalized cell line. Results The nanotopographic features of material surface, stoichiometry, and wetting properties were found to be significant factors in dictating platelet behavior and cell viability. The TiBN films with higher nitrogen contents were less thrombogenic compared with the biased carbon films and control. The carbon hybridization in carbon films and hydrophilicity, which were strongly dependent on the deposition process and its parameters, affected the thrombogenicity potential. The hydrophobic CNT materials with high nanoroughness exhibited less hemocompatibility in comparison with the other classes of materials. All the thin film groups exhibited good cytocompatibility, with the surface roughness and surface free energy influencing the viability of cells.
Collapse
Affiliation(s)
- Varvara Karagkiozaki
- Lab for Thin Films - Nanosystems and Nanometrology (LTFN), Physics Department, Aristotle University of Thessaloniki, Thessaloniki
| | | | | | | | | | | | | |
Collapse
|
19
|
Karagkiozaki V, Vavoulidis E, Karagiannidis PG, Gioti M, Fatouros DG, Vizirianakis IS, Logothetidis S. Development of a nanoporous and multilayer drug-delivery platform for medical implants. Int J Nanomedicine 2012; 7:5327-38. [PMID: 23071394 PMCID: PMC3469098 DOI: 10.2147/ijn.s31185] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Biodegradable polymers can be applied to a variety of implants for controlled and local drug delivery. The aim of this study is to develop a biodegradable and nanoporous polymeric platform for a wide spectrum of drug-eluting implants with special focus on stent-coating applications. It was synthesized by poly(DL-lactide-co-glycolide) (PLGA 65:35, PLGA 75:25) and polycaprolactone (PCL) in a multilayer configuration by means of a spin-coating technique. The antiplatelet drug dipyridamole was loaded into the surface nanopores of the platform. Surface characterization was made by atomic force microscopy (AFM) and spectroscopic ellipsometry (SE). Platelet adhesion and drug-release kinetic studies were then carried out. The study revealed that the multilayer films are highly nanoporous, whereas the single layers of PLGA are atomically smooth and spherulites are formed in PCL. Their nanoporosity (pore diameter, depth, density, surface roughness) can be tailored by tuning the growth parameters (eg, spinning speed, polymer concentration), essential for drug-delivery performance. The origin of pore formation may be attributed to the phase separation of polymer blends via the spinodal decomposition mechanism. SE studies revealed the structural characteristics, film thickness, and optical properties even of the single layers in the triple-layer construct, providing substantial information for drug loading and complement AFM findings. Platelet adhesion studies showed that the dipyridamole-loaded coatings inhibit platelet aggregation that is a prerequisite for clotting. Finally, the films exhibited sustained release profiles of dipyridamole over 70 days. These results indicate that the current multilayer phase therapeutic approach constitutes an effective drug-delivery platform for drug-eluting implants and especially for cardiovascular stent applications.
Collapse
Affiliation(s)
- Varvara Karagkiozaki
- Lab for Thin Films-Nanosystems and Nanometrology, Physics Department, Aristotle University of Thessaloniki, Greece
| | | | | | | | | | | | | |
Collapse
|
20
|
|
21
|
Karagkiozaki VC, Logothetidis SD, Kassavetis SN, Giannoglou GD. Nanomedicine for the reduction of the thrombogenicity of stent coatings. Int J Nanomedicine 2010; 5:239-48. [PMID: 20463940 PMCID: PMC2865019 DOI: 10.2147/ijn.s7596] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2010] [Indexed: 11/24/2022] Open
Abstract
The treatment of patients with drug-eluting stents (DES) continues to evolve with the current emergence of DES technology that offers a combination of pharmacological and mechanical approaches to prevent arterial restenosis. However, despite the promising short-term and mid-term outcomes of DES, there are valid concerns about adverse clinical effects of late stent thrombosis. In this study, we present an example of how nanomedicine can offer solutions for improving stent coating manufacturing, by producing nanomaterials with tailored and controllable properties. The study is based on the exploitation of human platelets response towards carbon-based nanocoatings via atomic force microscope (AFM). AFM can facilitate the comprehensive analysis of platelets behavior onto stent nanocoatings and enable the study of thrombogenicity. Platelet-rich plasma from healthy donors was used for the real-time study of biointerfacial interactions. The carbon nanomaterials were developed by rf magnetron sputtering technique under controllable deposition conditions to provide favorable surface nanotopography. It was shown that by altering the surface topography of nanocoatings, the activation of platelets can be affected, while the carbon nanocoatings having higher surface roughness were found to be less thrombogenic in terms of platelets adhesion. This is an actual solution for improving the stent coating fabrication.
Collapse
Affiliation(s)
- Varvara C Karagkiozaki
- Aristotle University of Thessaloniki, Medical School, AHEPA University General Hospital, 1st Cardiology Department, Cardiovascular Engineering and Atherosclerosis Laboratory, Greece
| | | | | | | |
Collapse
|
22
|
Hidalgo JA, Montero-Ocampo C, Cuberes MT. Nanoscale Visualization of Elastic Inhomogeneities at TiN Coatings Using Ultrasonic Force Microscopy. NANOSCALE RESEARCH LETTERS 2009; 4:1493-1501. [PMID: 20652153 PMCID: PMC2894194 DOI: 10.1007/s11671-009-9426-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2009] [Accepted: 08/18/2009] [Indexed: 05/29/2023]
Abstract
Ultrasonic force microscopy has been applied to the characterization of titanium nitride coatings deposited by physical vapor deposition dc magnetron sputtering on stainless steel substrates. The titanium nitride layers exhibit a rich variety of elastic contrast in the ultrasonic force microscopy images. Nanoscale inhomogeneities in stiffness on the titanium nitride films have been attributed to softer substoichiometric titanium nitride species and/or trapped subsurface gas. The results show that increasing the sputtering power at the Ti cathode increases the elastic homogeneity of the titanium nitride layers on the nanometer scale. Ultrasonic force microscopy elastic mapping on titanium nitride layers demonstrates the capability of the technique to provide information of high value for the engineering of improved coatings.
Collapse
Affiliation(s)
- JA Hidalgo
- CINVESTAV-IPN, U. Saltillo, Apdo. Postal 663, 25900, Saltillo, Coahuila, Mexico
| | - C Montero-Ocampo
- CINVESTAV-IPN, U. Saltillo, Apdo. Postal 663, 25900, Saltillo, Coahuila, Mexico
| | - MT Cuberes
- Laboratory of Nanotechnology, University of Castilla-La Mancha, Pza. Manuel Meca 1, 13400, Almadén, Spain
| |
Collapse
|