1
|
Alkhodary MA. Effect of controlled surface roughness and biomimetic coating on titanium implants adhesion to the bone: An experiment animal study. Saudi Dent J 2023; 35:819-826. [PMID: 38025594 PMCID: PMC10658383 DOI: 10.1016/j.sdentj.2023.07.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 07/08/2023] [Accepted: 07/10/2023] [Indexed: 12/01/2023] Open
Abstract
Introduction Laser micromachining of titanium and its alloys can create micro-grooves with sizes similar to cell diameter of about 10 μm. Its coating with arginine-glycine-aspartic acid (RGD) may enhance cellular spreading and adhesion. This study aimed to evaluate the effect of laser micro-grooving and laser micro-grooving combined with RGD coating on the strength of the dental implants/bone interface using destructive mechanical pullout testing in experimental animals. Materials and methods In this study, the test groups consisted of 1.5-mm diameter, 5-mm long laser-grooved and laser-grooved/RGD coated titanium alloy (Ti-6Al-4 V) rods, and the control group included plain titanium alloy (Ti-6Al-4 V) rods. These rods were implanted in the mandibles of New Zealand white rabbits for 2, 4, and 6 weeks. After sacrifice, the test and control specimens were retrieved for mechanical pullout testing. The DMA 7-e was used to pull the titanium rods out of the bone, the probe position was plotted versus time graph to monitor the test progression, and the static modulus versus time graph was viewed; such graphs was then transformed into tables. The results were analyzed using the Mann-Whitney test. Results The laser-grooved/RGD coated rods had significantly higher pull-out strength than the laser-grooved and control rods. Additionally, the laser-grooved rods had significantly higher pull-out strength than control rods. Conclusion Two novel surface treatments were used: laser micro-grooving and tri peptide RGD coating, both of which had different effects on the dental implant interface. Laser grooving improved peri-implant bone healing, whereas RGD coating facilitated earlier bone-implant adhesion and better mineralization.
Collapse
Affiliation(s)
- Mohamed Ahmed Alkhodary
- Corresponding author at: Department of Prosthetic Dental Sciences, College of Dentistry, Qassim University, P.O. Box 6700, Burydah 51452, Saudi Arabia.
| |
Collapse
|
2
|
Reczyńska K, Major R, Kopernik M, Pamuła E, Imbir G, Plutecka H, Bruckert F, Surmiak M. Surface modification of polyurethane with eptifibatide-loaded degradable nanoparticles reducing risk of blood coagulation. Colloids Surf B Biointerfaces 2021; 201:111624. [PMID: 33621749 DOI: 10.1016/j.colsurfb.2021.111624] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 02/03/2021] [Accepted: 02/08/2021] [Indexed: 11/18/2022]
Abstract
The main purpose of the work was to develop a drug releasing coatings on the surface of medical devices exposed to blood flow, what should enable effective inhibition of blood coagulation process. As a part of the work, the process of encapsulating the anticoagulant drug eptifibatide (EPT) in poly(DL-lactic-co-glycolic acid) (PLGA) nanoparticles was developed. EPT encapsulation efficiency was 29.1 ± 2.1%, while the EPT loading percentage in the nanoparticles was 4.2 ± 0.3%. The PLGA nanoparticles were suspended in a polyanion solution (hyaluronic acid (HA)) and deposited on the surface-treated thermoplastic polyurethane (TPU) by a layer-by-layer method. As a polycation poly-L-lysine (PLL) was used. The influence of released EPT on the activation of the coagulation system was analyzed using dynamic blood tester. Performed experiments show an effective delivery of the drug to the bloodstream and low risk of platelets (membrane receptor) activation. The dynamic blood test process, including its physical phenomenon, was described using numerical methods, i.e. a finite volume cone-and-plate test model as well as non-Newtonian blood models. The values of shear stress and blood flow velocity under the fast-rotating cone were computed applying boundary conditions of cylinder wall imitating blood-nanomaterial interaction. Implementing boundary conditions as initial shear stress values of bottom cylinder wall resulted in the increase of shear stress in blood under rotating cone. The developed system combining drug eluting polymeric nanoparticles with the polyelectrolyte "layer-by-layer" coating can be easily introduced to medical implants of various shape, with the advantages of resorbable drug carriers allowing for local and controllable delivery of anti-thrombogenic drugs.
Collapse
Affiliation(s)
- Katarzyna Reczyńska
- AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Al. Mickiewicza 30, 30-059 Kraków, Poland
| | - Roman Major
- Institute of Metallurgy and Materials Science, Polish Academy of Sciences, 25 Reymonta st., 30-059 Cracow, Poland
| | - Magdalena Kopernik
- AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Al. Mickiewicza 30, 30-059 Kraków, Poland.
| | - Elżbieta Pamuła
- AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Al. Mickiewicza 30, 30-059 Kraków, Poland
| | - Gabriela Imbir
- Institute of Metallurgy and Materials Science, Polish Academy of Sciences, 25 Reymonta st., 30-059 Cracow, Poland
| | - Hanna Plutecka
- Department of Internal Medicine, Jagiellonian University Medical College, 8 Skawińska st., 31-066 Cracow, Poland
| | - Franz Bruckert
- Laboratoire des Matériaux et du Génie Physique - UMR 5628, 3 parvis Louis Néel, Grenoble Cedex 1, France
| | - Marcin Surmiak
- Department of Internal Medicine, Jagiellonian University Medical College, 8 Skawińska st., 31-066 Cracow, Poland
| |
Collapse
|
3
|
Ani CJ, Obayemi JD, Uzonwanne VO, Danyuo Y, Odusanya OS, Hu J, Malatesta K, Soboyejo WO. A shear assay study of single normal/breast cancer cell deformation and detachment from poly-di-methyl-siloxane (PDMS) surfaces. J Mech Behav Biomed Mater 2018; 91:76-90. [PMID: 30544025 DOI: 10.1016/j.jmbbm.2018.11.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Revised: 06/25/2018] [Accepted: 11/12/2018] [Indexed: 02/01/2023]
Abstract
This paper presents the results of a combined experimental and analytical/computational study of viscoelastic cell deformation and detachment from poly-di-methyl-siloxane (PDMS) surfaces. Fluid mechanics and fracture mechanics concepts are used to model the detachment of biological cells observed under shear assay conditions. The analytical and computational models are used to compute crack driving forces, which are then related to crack extension during the detachment of normal breast cells and breast cancer cells from PDMS surfaces that are relevant to biomedical implants. The interactions between cells and the extracellular matrix, or the extracellular matrix and the PDMS substrate, are then characterized using force microscopy measurements of the pull-off forces that are used to determine the adhesion energies. Finally, fluorescence microscopy staining of the cytosketelal structures (actin, micro-tubulin and cyto-keratin), transmembrane proteins (vimentin) and the ECM structures (Arginin Glycine Aspartate - RGD) is used to show that the detachment of cells during the shear assay experiments occurs via interfacial cracking between (between the ECM and the cell membranes) with a high incidence of crack bridging by transmembrane vinculin structures that undergo pull-out until they detach from the actin cytoskeletal structure. The implications of the results are discussed for the design of interfaces that are relevant to implantable biomedical devices and normal/cancer tissue.
Collapse
Affiliation(s)
- C J Ani
- Department of Theoretical and Applied Physics, African University of Science and Technology, Km 10, Airport Road, Galadimawa, Abuja, Federal Capital Territory, Nigeria; Department of Physics, Salem University, Km 16, PMB 1060, Lokoja, Kogi State, Nigeria
| | - J D Obayemi
- Department of Mechanical Engineering, Worcester Polytechnic Institute (WPI), Worcester, MA 01609, USA
| | - V O Uzonwanne
- Department of Mechanical Engineering, Worcester Polytechnic Institute (WPI), Worcester, MA 01609, USA
| | - Y Danyuo
- Department of Mechanical Engineering, Ashesi University, Berekuso, Ghana; Department of Materials Science and Engineering, African University of Science and Technology, Km 10, Airport Road, Galadimawa, Abuja, Federal Capital Territory, Nigeria
| | - O S Odusanya
- Advanced Biotechnology Laboratory, Sheda Science and Technology Complex, Abuja, Nigeria
| | - J Hu
- Princeton Institute for the Science and Technology of Materials (PRISM), and The Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544, USA
| | - K Malatesta
- Princeton Institute for the Science and Technology of Materials (PRISM), and The Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544, USA
| | - W O Soboyejo
- Department of Mechanical Engineering, Worcester Polytechnic Institute (WPI), Worcester, MA 01609, USA; Department of Materials Science and Engineering, African University of Science and Technology, Km 10, Airport Road, Galadimawa, Abuja, Federal Capital Territory, Nigeria; Advanced Biotechnology Laboratory, Sheda Science and Technology Complex, Abuja, Nigeria.
| |
Collapse
|
4
|
Shen Y, Ahmad MR, Nakajima M, Kojima S, Homma M, Fukuda T. Evaluation of the single yeast cell's adhesion to ITO substrates with various surface energies via ESEM nanorobotic manipulation system. IEEE Trans Nanobioscience 2012; 10:217-24. [PMID: 22249767 DOI: 10.1109/tnb.2011.2177099] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Cell-surface adhesion force is important for cell activities and the development of bio materials. In this paper, a method for in situ single cell (W303) adhesion force measurement was proposed based on nanorobotic manipulation system inside an environment scanning electron microscope (ESEM). An end effector was fabricated from a commercial atomic force microscope (AFM) cantilever by focused ion beam (FIB) etching. The spring constant of it was calibrated by nanomanipulation approach. Three kinds of hydrophilic and hydrophobic ITO plates were prepared by using VUV-irradiation and OTS coating techniques. The shear adhesion strength of the single yeast cell to each substrate was measured based on the deflection of the end effector. The results demonstrated that the cell adhesion force was larger under the wet condition in the ESEM environment than in the aqueous condition. It also showed that the cell adhesion force to hydrophilic surface was larger than that to the hydrophobic surface. Studies of single cell's adhesion on various plate surfaces and environments could give new insights into the tissue engineering and biological field.
Collapse
Affiliation(s)
- Yajing Shen
- Department of Micro-Nano Systems Engineering, Nagoya University, Nagoya, Japan.
| | | | | | | | | | | |
Collapse
|
5
|
Cell adhesion to plasma electrolytic oxidation (PEO) titania coatings, assessed using a centrifuging technique. J Mech Behav Biomed Mater 2011; 4:2103-12. [DOI: 10.1016/j.jmbbm.2011.07.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2011] [Revised: 07/12/2011] [Accepted: 07/18/2011] [Indexed: 10/18/2022]
|
6
|
Study of the time effect on the strength of cell-cell adhesion force by a novel nano-picker. Biochem Biophys Res Commun 2011; 409:160-5. [PMID: 21510921 DOI: 10.1016/j.bbrc.2011.04.019] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2011] [Accepted: 04/05/2011] [Indexed: 11/21/2022]
Abstract
Cell's adhesion is important to cell's interaction and activates. In this paper, a novel method for cell-cell adhesion force measurement was proposed by using a nano-picker. The effect of the contact time on the cell-cell adhesion force was studied. The nano-picker was fabricated from an atomic force microscopy (AFM) cantilever by nano fabrication technique. The cell-cell adhesion force was measured based on the deflection of the nano-picker beam. The result suggests that the adhesion force between cells increased with the increasing of contact time at the first few minutes. After that, the force became constant. This measurement methodology was based on the nanorobotic manipulation system inside an environmental scanning electron microscope. It can realize both the observation and manipulation of a single cell at nanoscale. The quantitative and precise cell-cell adhesion force result can be obtained by this method. It would help us to understand the single cell interaction with time and would benefit the research in medical and biological fields potentially.
Collapse
|
7
|
Effect of ambient humidity on the strength of the adhesion force of single yeast cell inside environmental-SEM. Ultramicroscopy 2011; 111:1176-83. [PMID: 21763235 DOI: 10.1016/j.ultramic.2011.02.008] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2010] [Revised: 02/22/2011] [Accepted: 02/24/2011] [Indexed: 11/22/2022]
Abstract
A novel method for measuring an adhesion force of single yeast cell is proposed based on a nanorobotic manipulation system inside an environmental scanning electron microscope (ESEM). The effect of ambient humidity on a single yeast cell adhesion force was studied. Ambient humidity was controlled by adjusting the chamber pressure and temperature inside the ESEM. It has been demonstrated that a thicker water film was formed at a higher humidity condition. The adhesion force between an atomic force microscopy (AFM) cantilever and a tungsten probe which later on known as a substrate was evaluated at various humidity conditions. A micro-puller was fabricated from an AFM cantilever by use of focused ion beam (FIB) etching. The adhesion force of a single yeast cell (W303) to the substrate was measured using the micro-puller at the three humidity conditions: 100%, 70%, and 40%. The results showed that the adhesion force between the single yeast cell and the substrate is much smaller at higher humidity condition. The yeast cells were still alive after being observed and manipulated inside ESEM based on the result obtained from the re-culturing of the single yeast cell. The results from this work would help us to understand the ESEM system better and its potential benefit to the single cell analysis research.
Collapse
|