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Nitschke BM, Beltran FO, Hahn MS, Grunlan MA. Trends in bioactivity: inducing and detecting mineralization of regenerative polymeric scaffolds. J Mater Chem B 2024; 12:2720-2736. [PMID: 38410921 PMCID: PMC10935659 DOI: 10.1039/d3tb02674d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 02/14/2024] [Indexed: 02/28/2024]
Abstract
Due to limitations of biological and alloplastic grafts, regenerative engineering has emerged as a promising alternative to treat bone defects. Bioactive polymeric scaffolds are an integral part of such an approach. Bioactivity importantly induces hydroxyapatite mineralization that promotes osteoinductivity and osseointegration with surrounding bone tissue. Strategies to confer bioactivity to polymeric scaffolds utilize bioceramic fillers, coatings and surface treatments, and additives. These approaches can also favorably impact mechanical and degradation properties. A variety of fabrication methods are utilized to prepare scaffolds with requisite morphological features. The bioactivity of scaffolds may be evaluated with a broad set of techniques, including in vitro (acellular and cellular) and in vivo methods. Herein, we highlight contemporary and emerging approaches to prepare and assess scaffold bioactivity, as well as existing challenges.
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Affiliation(s)
- Brandon M Nitschke
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA.
| | - Felipe O Beltran
- Department of Materials Science & Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Mariah S Hahn
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - Melissa A Grunlan
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA.
- Department of Materials Science & Engineering, Texas A&M University, College Station, TX 77843, USA
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA
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2
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Possenti E, Colombo C, Realini M, Song CL, Kazarian SG. Time-Resolved ATR-FTIR Spectroscopy and Macro ATR-FTIR Spectroscopic Imaging of Inorganic Treatments for Stone Conservation. Anal Chem 2021; 93:14635-14642. [PMID: 34699174 PMCID: PMC9295121 DOI: 10.1021/acs.analchem.1c02392] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
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In
this study, the novel application of ATR–FTIR spectroscopy
and macro ATR–FTIR spectroscopic imaging overcame an analytical
challenge in conservation science: the time-resolved, chemical, and
spatial investigation of the reaction of inorganic treatments for
stone conservation (ammonium oxalate, AmOx; ammonium phosphate, DAP)
occurring in water-based solutions. The aim was to (1) assess the
composition and localization of reaction products and their phase
variation during the reaction in real time and directly in an aqueous
environment and (2) investigate the reaction of AmOx and DAP with
calcite and the transformations induced to the substrate with a time-resolved
approach. The new analytical results showed that for both treatments,
the formation of new crystalline phases initiated at the early stages
of the reaction. Their composition changed during the treatment and
led to more stable phases. The reactivity of the stone substrate to
the treatments varied as a function of the stone material features,
such as the specific surface area. A clear influence of post-treatment
rinsing on the final composition of reaction phases was observed.
Above all, our research demonstrates the actual feasibility, practicality,
and high potential of an advanced ATR–FTIR spectroscopic approach
to investigate the behavior of conservation treatments and provided
new analytical tools to address the choices of conservation in pilot
worksites. Lastly, this study opens novel analytical perspectives
based on the new possible applications of ATR–FTIR spectroscopic
imaging in the field of conservation science, materials science, and
analytical chemistry.
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Affiliation(s)
- Elena Possenti
- Istituto di Scienze del Patrimonio Culturale, Consiglio Nazionale delle Ricerche, ISPC-CNR, Via R. Cozzi 53, Milano 20125, Italy
| | - Chiara Colombo
- Istituto di Scienze del Patrimonio Culturale, Consiglio Nazionale delle Ricerche, ISPC-CNR, Via R. Cozzi 53, Milano 20125, Italy
| | - Marco Realini
- Istituto di Scienze del Patrimonio Culturale, Consiglio Nazionale delle Ricerche, ISPC-CNR, Via R. Cozzi 53, Milano 20125, Italy
| | - Cai Li Song
- Department of Chemical Engineering, Imperial College London, South Kensington Campus London, London SW7 2AZ, United Kingdom
| | - Sergei G Kazarian
- Department of Chemical Engineering, Imperial College London, South Kensington Campus London, London SW7 2AZ, United Kingdom
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3
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Dou T, Zhou B, Hu S, Zhang P. Evolution of the structural polymorphs of poly(l-lactic acid) during the in vitro mineralization of its hydroxyapatite nanocomposites by attenuated total reflection fourier transform infrared mapping coupled with principal component analysis. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.124318] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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4
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Brézulier D, Chaigneau L, Jeanne S, Lebullenger R. The Challenge of 3D Bioprinting of Composite Natural Polymers PLA/Bioglass: Trends and Benefits in Cleft Palate Surgery. Biomedicines 2021; 9:1553. [PMID: 34829782 PMCID: PMC8615666 DOI: 10.3390/biomedicines9111553] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 10/15/2021] [Accepted: 10/19/2021] [Indexed: 11/22/2022] Open
Abstract
Cleft lip and palate is the fourth most common congenital malformation. Its prevalence is about 1 in 750 to 1 in 2000 live births. The consequences of this malformation are major: maxillary growth deficit, unaesthetic appearance, phonation disorders, difficulty in eating, and psycho-social disorders. Cleft palate repair establishes the division between the oral and nasal cavities. The alveolar bone graft is a key step. Different sites of autogenous bone harvesting are used, the most common being the iliac crest. Nevertheless, the large number of complications associated with harvesting has led to the use of substitute biomaterials. Bioactive glasses, discovered in 1969, are a group of synthetic silica-based materials with bone-bonding properties. Although 45S5 granular composition is commonly used in bone surgery to repair critical defects, it is only rarely used in the repair of cleft palates because this galenic form is only moderately adapted. However, advances in bone tissue engineering allow the shaping of three-dimensional scaffolds, which support colonization by host cells. Recent advances in computer-aided design/computer-aided manufacturing (CAD/CAM) have even led to the 3D printing of scaffolds combining 45S5 bioglass with a natural and biocompatible poly-lactic acid matrix. The shape of the parts is customized and adapted to the particular shape of the critical bone defects. The objective of this literature review is to highlight the particularities of alveolar defects subsequent to facial clefts, then to detail the characteristics of the materials and technologies used to elaborate 3D matrices by bioprinting. Finally, we will explore research directions regarding their use in reconstructive surgery of cleft palates.
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Affiliation(s)
- Damien Brézulier
- CNRS, University of Rennes, ISCR-UMR 6226, 35000 Rennes, France; (L.C.); (S.J.); (R.L.)
- Pôle Odontologie, CHU Rennes, University of Rennes, 35043 Rennes, France
| | - Louis Chaigneau
- CNRS, University of Rennes, ISCR-UMR 6226, 35000 Rennes, France; (L.C.); (S.J.); (R.L.)
| | - Sylvie Jeanne
- CNRS, University of Rennes, ISCR-UMR 6226, 35000 Rennes, France; (L.C.); (S.J.); (R.L.)
- Pôle Odontologie, CHU Rennes, University of Rennes, 35043 Rennes, France
| | - Ronan Lebullenger
- CNRS, University of Rennes, ISCR-UMR 6226, 35000 Rennes, France; (L.C.); (S.J.); (R.L.)
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5
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Optimization and characterization of poly(ℇ-caprolactone) nanofiber mats doped with bioactive glass and copper metal nanoparticles. CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-021-01777-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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6
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Taskin MB, Ahmad T, Wistlich L, Meinel L, Schmitz M, Rossi A, Groll J. Bioactive Electrospun Fibers: Fabrication Strategies and a Critical Review of Surface-Sensitive Characterization and Quantification. Chem Rev 2021; 121:11194-11237. [DOI: 10.1021/acs.chemrev.0c00816] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Mehmet Berat Taskin
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, 97070 Würzburg, Germany
| | - Taufiq Ahmad
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, 97070 Würzburg, Germany
| | - Laura Wistlich
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, 97070 Würzburg, Germany
| | - Lorenz Meinel
- Institute of Pharmacy and Food Chemistry and Helmholtz Institute for RNA Based Infection Research, 97074 Würzburg, Germany
| | - Michael Schmitz
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, 97070 Würzburg, Germany
| | - Angela Rossi
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, 97070 Würzburg, Germany
| | - Jürgen Groll
- Department of Functional Materials in Medicine and Dentistry and Bavarian Polymer Institute, University of Würzburg, 97070 Würzburg, Germany
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Gritsch L, Conoscenti G, La Carrubba V, Nooeaid P, Boccaccini AR. Polylactide-based materials science strategies to improve tissue-material interface without the use of growth factors or other biological molecules. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 94:1083-1101. [DOI: 10.1016/j.msec.2018.09.038] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 08/14/2018] [Accepted: 09/11/2018] [Indexed: 01/11/2023]
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Querido W, Falcon JM, Kandel S, Pleshko N. Vibrational spectroscopy and imaging: applications for tissue engineering. Analyst 2017; 142:4005-4017. [PMID: 28956032 PMCID: PMC5653442 DOI: 10.1039/c7an01055a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Tissue engineering (TE) approaches strive to regenerate or replace an organ or tissue. The successful development and subsequent integration of a TE construct is contingent on a series of in vitro and in vivo events that result in an optimal construct for implantation. Current widely used methods for evaluation of constructs are incapable of providing an accurate compositional assessment without destruction of the construct. In this review, we discuss the contributions of vibrational spectroscopic assessment for evaluation of tissue engineered construct composition, both during development and post-implantation. Fourier transform infrared (FTIR) spectroscopy in the mid and near-infrared range, as well as Raman spectroscopy, are intrinsically label free, can be non-destructive, and provide specific information on the chemical composition of tissues. Overall, we examine the contribution that vibrational spectroscopy via fiber optics and imaging have to tissue engineering approaches.
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Affiliation(s)
- William Querido
- Department of Bioengineering, Temple University, Philadelphia, PA, USA.
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Rajapakse CS, Padalkar MV, Yang HJ, Ispiryan M, Pleshko N. Non-destructive NIR spectral imaging assessment of bone water: Comparison to MRI measurements. Bone 2017; 103:116-124. [PMID: 28666972 PMCID: PMC5572678 DOI: 10.1016/j.bone.2017.06.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 05/07/2017] [Accepted: 06/21/2017] [Indexed: 01/22/2023]
Abstract
Bone fracture risk increases with age, disease states, and with use of certain therapeutics, such as acid-suppressive drugs, steroids and high-dose bisphosphonates. Historically, investigations into factors that underlie bone fracture risk have focused on evaluation of bone mineral density (BMD). However, numerous studies have pointed to factors other than BMD that contribute to fragility, including changes in bone collagen and water. The goal of this study is to investigate the feasibility of using near infrared spectral imaging (NIRSI) to determine the spatial distribution and relative amount of water and organic components in whole cross-sections of bone, and to compare those results to those obtained using magnetic resonance imaging (MRI) methods. Cadaver human whole-section tibiae samples harvested from 18 donors of ages 27-97years underwent NIRSI and ultrashort echo time (UTE) MRI. As NIRSI data is comprised of broad absorbances, second derivative processing was evaluated as a means to narrow peaks and obtain compositional information. The (inverted) second derivative peak heights of the NIRSI absorbances correlated significantly with the mean peak integration of the water, collagen and fat NIR absorbances, respectively, indicating that either processing method could be used for compositional assessment. The 5797cm-1 absorbance was validated as arising from the fat present in bone marrow, as it completely disappeared after ultrasonication. The MRI UTE-determined bound water content in tibial cortical bone samples ranged from 62 to 91%. The NIRSI water peaks at 5152cm-1 and at 7008cm-1 correlated significantly with the UTE data, with r=0.735, p=0.016, and r=0.71, p=0.0096, respectively. There was also a strong correlation between the intensity of the NIRSI water peak at 7008cm-1 and the intensity of the collagen peak at 4608cm-1 (r=0.69, p=0.004). Since NIRSI requires minimal to no sample preparation, this approach has great potential to become a gold standard modality for the investigation of changes in water content, distribution, and environment in pre-clinical studies of bone pathology and therapeutics.
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Affiliation(s)
- Chamith S Rajapakse
- Departments of Radiology and Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, USA
| | - Mugdha V Padalkar
- Department of Bioengineering, Temple University, 1947 N. 12th St, Philadelphia, PA, USA
| | - Hee Jin Yang
- Department of Bioengineering, Temple University, 1947 N. 12th St, Philadelphia, PA, USA
| | - Mikayel Ispiryan
- Departments of Radiology and Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, USA
| | - Nancy Pleshko
- Department of Bioengineering, Temple University, 1947 N. 12th St, Philadelphia, PA, USA.
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10
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Kanou M, Kameoka T, Suehara KI, Hashimoto A. Mid-infrared spectroscopic analysis of saccharides in aqueous solutions with sodium chloride. Biosci Biotechnol Biochem 2017; 81:735-742. [DOI: 10.1080/09168451.2016.1277943] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Abstract
The infrared spectral characteristics of three different types of disaccharides (trehalose, maltose, and sucrose) and four different types of monosaccharides (glucose, mannose, galactose, and fructose) in aqueous solutions with sodium chloride (NaCl) were determined. The infrared spectra were obtained using the FT-IR/ATR method and the absorption intensities respected the interaction between the saccharide and water with NaCl were determined. This study also focused on not only the glycosidic linkage position and the constituent monosaccharides, but also the concentration of the saccharides and NaCl and found that they have a significant influence on the infrared spectroscopic characterization of the disaccharides in an aqueous solution with NaCl. The absorption intensities representing the interaction between a saccharide and water with NaCl were spectroscopically determined. Additionally, the applications of MIR spectroscopy to obtain information about saccharide–NaCl interactions in foods and biosystems were suggested.
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Affiliation(s)
- Mikihito Kanou
- Intellectual Property Office, Community-University Research Cooperation Center, Mie University, Tsu, Japan
| | - Takaharu Kameoka
- Division of Sustainable Resource Sciences, Graduate School of Bioresources, Mie University, Tsu, Japan
| | - Ken-ichiro Suehara
- Division of Sustainable Resource Sciences, Graduate School of Bioresources, Mie University, Tsu, Japan
| | - Atsushi Hashimoto
- Division of Sustainable Resource Sciences, Graduate School of Bioresources, Mie University, Tsu, Japan
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11
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Sroka-Bartnicka A, Borkowski L, Ginalska G, Ślósarczyk A, Kazarian SG. Structural transformation of synthetic hydroxyapatite under simulated in vivo conditions studied with ATR-FTIR spectroscopic imaging. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 171:155-161. [PMID: 27513683 DOI: 10.1016/j.saa.2016.07.051] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 07/13/2016] [Accepted: 07/31/2016] [Indexed: 05/23/2023]
Abstract
Hydroxyapatite and carbonate-substituted hydroxyapatite are widely used in bone tissue engineering and regenerative medicine. Both apatite materials were embedded into recently developed ceramic/polymer composites, subjected to Simulated Body Fluid (SBF) for 30days and characterized using ATR-FTIR spectroscopic imaging to assess their behaviour and structures. The specific aim was to detect the transition phases between both types of hydroxyapatite during the test and to analyze the surface modification caused by SBF. ATR-FTIR spectroscopic imaging was successfully applied to characterise changes in the hydroxyapatite lattice due to the elastic properties of the scaffolds. It was observed that SBF treatment caused a replacement of phosphates in the lattice of non-substituted hydroxyapatite by carbonate ions. A detailed study excluded the formation of pure A type carbonate apatite. In turn, CO32- content in synthetic carbonate-substituted hydroxyapatite decreased. The usefulness of ATR-FTIR spectroscopic imaging studies in the evaluation of elastic and porous β-glucan hydroxyapatite composites has been demonstrated.
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Affiliation(s)
- Anna Sroka-Bartnicka
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, SW7 2AZ London, United Kingdom.
| | - Leszek Borkowski
- Chair and Department of Biochemistry and Biotechnology, Medical University of Lublin, Chodźki 1, 20-093 Lublin, Poland
| | - Grazyna Ginalska
- Chair and Department of Biochemistry and Biotechnology, Medical University of Lublin, Chodźki 1, 20-093 Lublin, Poland
| | - Anna Ślósarczyk
- Faculty of Materials Science and Ceramics, AGH-University of Science and Technology, Mickiewicza 30, 30-059 Krakow, Poland
| | - Sergei G Kazarian
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, SW7 2AZ London, United Kingdom.
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12
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Tajbakhsh S, Hajiali F. A comprehensive study on the fabrication and properties of biocomposites of poly(lactic acid)/ceramics for bone tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 70:897-912. [DOI: 10.1016/j.msec.2016.09.008] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2016] [Revised: 08/27/2016] [Accepted: 09/06/2016] [Indexed: 12/22/2022]
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13
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Eisenstein NM, Cox SC, Williams RL, Stapley SA, Grover LM. Bedside, Benchtop, and Bioengineering: Physicochemical Imaging Techniques in Biomineralization. Adv Healthc Mater 2016; 5:507-28. [PMID: 26789418 DOI: 10.1002/adhm.201500617] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 09/10/2015] [Indexed: 01/10/2023]
Abstract
The need to quantify physicochemical properties of mineralization spans many fields. Clinicians, mineralization researchers, and bone tissue bioengineers need to be able to measure the distribution, quantity, and the mechanical and chemical properties of mineralization within a wide variety of substrates from injured muscle to electrospun polymer scaffolds and everything in between. The techniques available to measure these properties are highly diverse in terms of their complexity and utility. Therefore it is of the utmost importance that those who intend to use them have a clear understanding of the advantages and disadvantages of each technique and its appropriateness to their specific application. This review provides all of this information for each technique and uses heterotopic ossification and engineered bone substitutes as examples to illustrate how these techniques have been applied. In addition, we provide novel data using advanced techniques to analyze human samples of combat related heterotopic ossification.
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Affiliation(s)
- Neil M. Eisenstein
- Chemical Engineering; University of Birmingham; Edgbaston B15 2TT UK
- Royal Centre for Defence Medicine; ICT Centre; Vincent Drive; Edgbaston B15 2SQ UK
| | - Sophie C. Cox
- Chemical Engineering; University of Birmingham; Edgbaston B15 2TT UK
| | | | - Sarah A. Stapley
- Royal Centre for Defence Medicine; ICT Centre; Vincent Drive; Edgbaston B15 2SQ UK
| | - Liam M. Grover
- Chemical Engineering; University of Birmingham; Edgbaston B15 2TT UK
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14
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Sroka-Bartnicka A, Kimber JA, Borkowski L, Pawlowska M, Polkowska I, Kalisz G, Belcarz A, Jozwiak K, Ginalska G, Kazarian SG. The biocompatibility of carbon hydroxyapatite/β-glucan composite for bone tissue engineering studied with Raman and FTIR spectroscopic imaging. Anal Bioanal Chem 2015; 407:7775-85. [PMID: 26277184 DOI: 10.1007/s00216-015-8943-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 07/28/2015] [Indexed: 11/28/2022]
Abstract
The spectroscopic approaches of FTIR imaging and Raman mapping were applied to the characterisation of a new carbon hydroxyapatite/β-glucan composite developed for bone tissue engineering. The composite is an artificial bone material with an apatite-forming ability for the bone repair process. Rabbit bone samples were tested with an implanted bioactive material for a period of several months. Using spectroscopic and chemometric methods, we were able to determine the presence of amides and phosphates and the distribution of lipid-rich domains in the bone tissue, providing an assessment of the composite's bioactivity. Samples were also imaged in transmission using an infrared microscope combined with a focal plane array detector. CaF2 lenses were also used on the infrared microscope to improve spectral quality by reducing scattering artefacts, improving chemometric analysis. The presence of collagen and lipids at the bone/composite interface confirmed biocompatibility and demonstrate the suitability of FTIR microscopic imaging with lenses in studying these samples. It confirmed that the composite is a very good background for collagen growth and increases collagen maturity with the time of the bone growth process. The results indicate the bioactive and biocompatible properties of this composite and demonstrate how Raman and FTIR spectroscopic imaging have been used as an effective tool for tissue characterisation.
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Affiliation(s)
- Anna Sroka-Bartnicka
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK.
| | - James A Kimber
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
| | - Leszek Borkowski
- Chair and Department of Biochemistry and Biotechnology, Medical University of Lublin, Chodźki 1, 20-093, Lublin, Poland
| | - Marta Pawlowska
- Department of Animal Physiology, University of Life Sciences in Lublin, Akademicka 13, 20-950, Lublin, Poland
| | - Izabela Polkowska
- Department and Clinic of Animal Surgery, University of Life Sciences in Lublin, Akademicka 13, 20-950, Lublin, Poland
| | - Grzegorz Kalisz
- Department of Biopharmacy, Medical University of Lublin, Chodzki 4a, 20-093, Lublin, Poland
| | - Anna Belcarz
- Chair and Department of Biochemistry and Biotechnology, Medical University of Lublin, Chodźki 1, 20-093, Lublin, Poland
| | - Krzysztof Jozwiak
- Department of Biopharmacy, Medical University of Lublin, Chodzki 4a, 20-093, Lublin, Poland
| | - Grazyna Ginalska
- Chair and Department of Biochemistry and Biotechnology, Medical University of Lublin, Chodźki 1, 20-093, Lublin, Poland
| | - Sergei G Kazarian
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK.
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15
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Qian L, Ahmed A, Glennon-Alty L, Yang Y, Murray P, Zhang H. Patterned substrates fabricated by a controlled freezing approach and biocompatibility evaluation by stem cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 49:390-399. [DOI: 10.1016/j.msec.2015.01.034] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Revised: 12/17/2014] [Accepted: 01/07/2015] [Indexed: 12/23/2022]
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16
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Gentile P, Bellucci D, Sola A, Mattu C, Cannillo V, Ciardelli G. Composite scaffolds for controlled drug release: role of the polyurethane nanoparticles on the physical properties and cell behaviour. J Mech Behav Biomed Mater 2014; 44:53-60. [PMID: 25617789 DOI: 10.1016/j.jmbbm.2014.12.017] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Revised: 12/15/2014] [Accepted: 12/16/2014] [Indexed: 10/24/2022]
Abstract
Localised delivery of appropriate biomolecule/drug(s) can be suitable to prevent postoperative infections and inflammation after scaffold implantation in vivo. In this study composite shell scaffolds, based on an internally produced bioactive glass and a commercial hydroxyapatite, were surface coated with a uniform polymeric layer, embedded with thermo-stable polyesterurethane (PU)-based nanoparticles (NPs), containing an anti-inflammatory drug (indomethacin; IDCM). The obtained functionalised scaffolds were subjected to physico-mechanical and biological characterisations. The results indicated that NPs incorporation into the gelatin coating of the composite scaffolds: 1) not changed significantly the micro-architecture of the scaffolds in terms of mean pore diameter and pore size distribution; 2) increased the compressive modulus; and 3) allowed to a sustained IDMC release (65-70% of the loaded-drug) within the first week of incubation in physiological solution. On the other hand, the NPs incorporation did not affect the biocompatibility of composite scaffolds, as evidenced by viability and alkaline phosphatase (ALP) activity of MG63 human osteoblast-like cells.
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Affiliation(s)
- Piergiorgio Gentile
- School of Clinical Dentistry, University of Sheffield, 19 Claremont Crescent, Sheffield S102TA, United Kingdom; Politecnico di Torino, Department of Mechanical and Aerospace Engineering, Corso Duca degli Abruzzi 24, Turin 10129, Italy.
| | - Devis Bellucci
- University of Modena and Reggio Emilia, Department of Engineering "E. Ferrari", Via Pietro Vivarelli 10, Modena 41125, Italy
| | - Antonella Sola
- University of Modena and Reggio Emilia, Department of Engineering "E. Ferrari", Via Pietro Vivarelli 10, Modena 41125, Italy
| | - Clara Mattu
- Politecnico di Torino, Department of Mechanical and Aerospace Engineering, Corso Duca degli Abruzzi 24, Turin 10129, Italy
| | - Valeria Cannillo
- University of Modena and Reggio Emilia, Department of Engineering "E. Ferrari", Via Pietro Vivarelli 10, Modena 41125, Italy
| | - Gianluca Ciardelli
- Politecnico di Torino, Department of Mechanical and Aerospace Engineering, Corso Duca degli Abruzzi 24, Turin 10129, Italy
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Ventura M, Boerman OC, de Korte C, Rijpkema M, Heerschap A, Oosterwijk E, Jansen JA, Walboomers XF. Preclinical Imaging in Bone Tissue Engineering. TISSUE ENGINEERING PART B-REVIEWS 2014; 20:578-95. [DOI: 10.1089/ten.teb.2013.0635] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Manuela Ventura
- Department of Biomaterials, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Otto C. Boerman
- Department of Nuclear Medicine, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Chris de Korte
- Department of Radiology, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Mark Rijpkema
- Department of Nuclear Medicine, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Arend Heerschap
- Department of Radiology, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Egbert Oosterwijk
- Department of Urology, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - John A. Jansen
- Department of Biomaterials, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - X. Frank Walboomers
- Department of Biomaterials, Radboud University Medical Centre, Nijmegen, The Netherlands
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18
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WANG Q, JIANG XT, XIN YZ, CUI JX, ZHANG PD. Characterization of In vitro Mineralization of Porous Poly (L-Lactic Acid)/Bioactive Glass Composites by Attenuated Total Reflectance-Fourier Transform Infrared Mapping. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2014. [DOI: 10.1016/s1872-2040(13)60713-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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19
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Cerruti M. Surface characterization of silicate bioceramics. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2012; 370:1281-1312. [PMID: 22349243 DOI: 10.1098/rsta.2011.0274] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The success of an implanted prosthetic material is determined by the early events occurring at the interface between the material and the body. These events depend on many surface properties, with the main ones including the surface's composition, porosity, roughness, topography, charge, functional groups and exposed area. This review will portray how our understanding of the surface reactivity of silicate bioceramics has emerged and evolved in the past four decades, owing to the adoption of many complementary surface characterization tools. The review is organized in sections dedicated to a specific surface property, each describing how the property influences the body's response to the material, and the tools that have been adopted to analyse it. The final section introduces the techniques that have yet to be applied extensively to silicate bioceramics, and the information that they could provide.
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Affiliation(s)
- Marta Cerruti
- Materials Engineering, McGill University, 3610 University Street, Montreal, Quebec, Canada H3A 2B2.
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20
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Ji C, Annabi N, Hosseinkhani M, Sivaloganathan S, Dehghani F. Fabrication of poly-DL-lactide/polyethylene glycol scaffolds using the gas foaming technique. Acta Biomater 2012; 8:570-8. [PMID: 21996623 DOI: 10.1016/j.actbio.2011.09.028] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2011] [Revised: 09/06/2011] [Accepted: 09/22/2011] [Indexed: 11/26/2022]
Abstract
The aim of this study was to prepare poly-DL-lactide/polyethylene glycol (PDLLA/PEG) blends to improve medium absorption and cell proliferation in the three-dimensional (3-D) structure of their scaffolds. Carbon dioxide (CO2) was used as a foaming agent to create porosity in these blends. The results of Fourier transform infrared (FTIR) spectroscopy demonstrated that the blends were homogeneous mixtures of PDLLA and PEG. The peak shifts at 1092 and 1744 cm(-1) confirmed the presence of molecular interactions between these two compounds. Increasing the PEG weight ratio enhanced the relative crystallinity and hydrophilicity. The PDLLA/PEG blends (especially 80/20 and 70/30 weight ratios) exhibited linear degradation profiles over an incubation time of 8 weeks. The mechanical properties of PDLLA/PEG blends having less than 30 wt.% PEG were suitable for the fabrication of porous scaffolds. Increasing the concentration of PEG to above 50% resulted in blends that were brittle and had low mechanical integrity. Highly porous scaffolds with controllable pore size were produced for 30 wt.% PEG samples using the gas foaming technique at temperatures between 25 and 55 °C and pressures between 60 and 160 bar. The average pore diameters achieved by gas foaming process were between 15 and 150 μm, and had an average porosity of 84%. The medium uptake and degradation rate of fabricated PDLLA/PEG scaffolds were increased compared with neat PDLLA film due to the presence of PEG and porosity. The porous scaffolds also demonstrated a lower modulus of elasticity and a higher elongation at break compared to the non-porous film. The fabricated PDLLA/PEG scaffolds have high potential for various tissue-engineering applications.
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21
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Composition–structure–property (Zn2+ and Ca2+ ion release) evaluation of Si–Na–Ca–Zn–Ce glasses: Potential components for nerve guidance conduits. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2011. [DOI: 10.1016/j.msec.2010.12.016] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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22
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Marelli B, Ghezzi CE, Barralet JE, Boccaccini AR, Nazhat SN. Three-Dimensional Mineralization of Dense Nanofibrillar Collagen−Bioglass Hybrid Scaffolds. Biomacromolecules 2010; 11:1470-9. [DOI: 10.1021/bm1001087] [Citation(s) in RCA: 124] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Benedetto Marelli
- Department of Mining and Materials Engineering, Faculty of Dentistry, McGill University, Montréal, QC, Canada, H3A 2B2, and Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany
| | - Chiara E. Ghezzi
- Department of Mining and Materials Engineering, Faculty of Dentistry, McGill University, Montréal, QC, Canada, H3A 2B2, and Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany
| | - Jake E. Barralet
- Department of Mining and Materials Engineering, Faculty of Dentistry, McGill University, Montréal, QC, Canada, H3A 2B2, and Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany
| | - Aldo R. Boccaccini
- Department of Mining and Materials Engineering, Faculty of Dentistry, McGill University, Montréal, QC, Canada, H3A 2B2, and Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany
| | - Showan N. Nazhat
- Department of Mining and Materials Engineering, Faculty of Dentistry, McGill University, Montréal, QC, Canada, H3A 2B2, and Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany
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23
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Kazarian SG, Chan KLA. Micro- and macro-attenuated total reflection Fourier transform infrared spectroscopic imaging. Plenary Lecture at the 5th International Conference on Advanced Vibrational Spectroscopy, 2009, Melbourne, Australia. APPLIED SPECTROSCOPY 2010; 64:135A-152A. [PMID: 20482963 DOI: 10.1366/000370210791211673] [Citation(s) in RCA: 117] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Fourier transform infrared (FT-IR) spectroscopic imaging has become a very powerful method in chemical analysis. In this review paper we describe a variety of opportunities for obtaining FT-IR images using the attenuated total reflection (ATR) approach and provide an overview of fundamental aspects, accessories, and applications in both micro- and macro-ATR imaging modes. The advantages and versatility of both ATR imaging modes are discussed and the spatial resolution of micro-ATR imaging is demonstrated. Micro-ATR imaging has opened up many new areas of study that were previously precluded by inadequate spatial resolution (polymer blends, pharmaceutical tablets, cross-sections of blood vessels or hair, surface of skin, single live cells, cancerous tissues). Recent applications of ATR imaging in polymer research, biomedical and forensic sciences, objects of cultural heritage, and other complex materials are outlined. The latest advances include obtaining spatially resolved chemical images from different depths within a sample, and surface-enhanced images for macro-ATR imaging have also been presented. Macro-ATR imaging is a valuable approach for high-throughput analysis of materials under controlled environments. Opportunities exist for chemical imaging of dynamic aqueous systems, such as dissolution, diffusion, microfluidics, or imaging of dynamic processes in live cells.
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Affiliation(s)
- Sergei G Kazarian
- Department of Chemical Engineering, Imperial College London, SW7 2AZ, London, England
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24
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Russias J, Saiz E, Deville S, Gryn K, Liu G, Nalla RK, Tomsia AP. Fabrication and in vitro characterization of three-dimensional organic/inorganic scaffolds by robocasting. J Biomed Mater Res A 2007; 83:434-45. [PMID: 17465019 DOI: 10.1002/jbm.a.31237] [Citation(s) in RCA: 105] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A key issue for the fabrication of scaffolds for tissue engineering is the development of processing techniques flexible enough to produce materials with a wide spectrum of solubility (bioresorption rates) and mechanical properties matching those of calcified tissues. These techniques must also have the capability of generating adequate porosity to further serve as a framework for cell penetration, new bone formation, and subsequent remodeling. In this study we show how hybrid organic/inorganic scaffolds with controlled microstructures can be built using robotic assisted deposition at room temperature. Polylactide or polycaprolactone scaffolds with pore sizes ranging between 200-500 microm and hydroxyapatite contents up to 70 wt % were fabricated. Compressive tests revealed an anisotropic behavior of the scaffolds, strongly dependant on their chemical composition. The inclusion of an inorganic component increased their stiffness but they were not brittle and could be easily machined even for ceramic contents up to 70 wt %. The mechanical properties of hybrid scaffolds did not degrade significantly after 20 days in simulated body fluid. However, the stiffness of pure polylactide scaffolds increased drastically due to polymer densification. Scaffolds containing bioactive glasses were also printed. After 20 days in simulated body fluid they developed an apatite layer on their surface.
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Affiliation(s)
- J Russias
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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25
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Andrew Chan KL, Kazarian SG. Chemical imaging of the stratum corneum under controlled humidity with the attenuated total reflection Fourier transform infrared spectroscopy method. JOURNAL OF BIOMEDICAL OPTICS 2007; 12:044010. [PMID: 17867814 DOI: 10.1117/1.2754686] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Attenuated total reflection Fourier transform infrared spectroscopic imaging was applied to study human stratum corneum (SC) tissue, the outermost layer of the skin. This imaging approach was combined with a controlled environment cell to demonstrate the possibility of obtaining chemical images of SC exposed to a wide range of relative humidities and diffusion of ethanol through the SC tissue with a specially designed liquid cell. The effect of water vapor sorbed into the SC on the distribution of other components in the SC was studied. Principal component analysis was applied in conjunction with univariate analysis to differentiate the distribution of different components in the SC. Swelling of the SC, a heterogeneous distribution of natural moisturizing factor and water, was detected upon the increase of relative humidity. The approach to image the penetration of liquid ethanol into the SC was also demonstrated and showed good potential and implications for studying transdermal drug delivery.
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Affiliation(s)
- K L Andrew Chan
- Imperial College London, Department of Chemical Engineering, London, SW7 2AZ, United Kingdom
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26
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Simon V, Spinu M, Stefan R. Structure and dissolution investigation of calcium-bismuth-borate glasses and vitroceramics containing silver. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2007; 18:507-12. [PMID: 17334702 DOI: 10.1007/s10856-007-2011-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2005] [Accepted: 11/04/2005] [Indexed: 05/14/2023]
Abstract
Quaternary Ag(2)O-CaO-Bi(2)O(3)-B(2)O(3) glasses and glassceramics are investigated with regard to release behaviour and local structure. The dissolution behaviour in water and physiological serum shows that the cations are released rapidly or gradually and points out a multi-step process, generally characterised by higher rates in water than in physiological serum. The structural effect of silver addition to bismuth-borate glasses is observed from infrared spectroscopic data. The antibacterial activity of the investigated samples was tested on six bacterial media.
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Affiliation(s)
- V Simon
- Babes-Bolyai University, Faculty of Physics, Cluj-Napoca, Romania.
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27
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Zhou X, Zhang P, Li Z, Rao G. Miscibility Behavior of Ethylene/Vinyl Acetate and C5 Petroleum Resin by FTIR Imaging. ANAL SCI 2007; 23:877-80. [PMID: 17625334 DOI: 10.2116/analsci.23.877] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
FTIR microscopic imaging was used to investigate the miscibility behavior of ethylene/vinyl acetate copolymer (EVA) and C5 petroleum resin. Images with an area of 500 x 500 microm(2) were collected in the reflection mode. The miscibility was characterized by probing the spatial distribution of the carbonyl group (C=O) of EVA in the whole images. It was found that a 1:1 hot-melt mixture of EVA and C5 resin showed a good miscibility behavior. For two different EVA copolymers, one with 18% vinyl acetate (VAc) content showed a better miscibility behavior than that with 28% VAc content. Our results demonstrated that this method allowed a direct, convenient and nondestructive visualization. This developed technique promises to become a powerful tool for studying the miscibility behavior of composite materials.
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Affiliation(s)
- Xin Zhou
- School of Science, Beijing University of Chemical Technology, Beijing, China
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28
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Boskey A, Pleshko Camacho N. FT-IR imaging of native and tissue-engineered bone and cartilage. Biomaterials 2006; 28:2465-78. [PMID: 17175021 PMCID: PMC1892909 DOI: 10.1016/j.biomaterials.2006.11.043] [Citation(s) in RCA: 364] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2006] [Accepted: 11/29/2006] [Indexed: 10/23/2022]
Abstract
Fourier transform infrared (FT-IR) imaging and microspectroscopy have been extensively applied to the analyses of tissues in health and disease. Spatially resolved mid-IR data has provided insights into molecular changes that occur in diseases of connective or collagen-based tissues, including, osteoporosis, osteogenesis imperfecta, osteopetrosis and pathologic calcifications. These techniques have also been used to probe chemical changes associated with load, disuse, and micro-damage in bone, and with degradation and repair in cartilage. This review summarizes the applications of FT-IR microscopy and imaging for analyses of bone and cartilage in healthy and diseased tissues, and illustrates the application of these techniques for the characterization of tissue-engineered bone and cartilage.
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Affiliation(s)
- Adele Boskey
- Hospital for Special Surgery and Weill Medical College and Graduate School of Medical Sciences of Cornell University, New York, NY 10021, USA.
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29
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Wessel E, Heinsohn G, Schmidt-Lewerkuehne H, Wittern KP, Rapp C, Siesler HW. Observation of a penetration depth gradient in attenuated total reflection fourier transform infrared spectroscopic imaging applications. APPLIED SPECTROSCOPY 2006; 60:1488-92. [PMID: 17217601 DOI: 10.1366/000370206779321391] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Affiliation(s)
- Elke Wessel
- Beiersdorf AG, Research and Development, Unnastrasse 48, D-20253 Hamburg, Germany.
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30
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Kazarian SG, Chan KLA. Applications of ATR-FTIR spectroscopic imaging to biomedical samples. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2006; 1758:858-67. [PMID: 16566893 DOI: 10.1016/j.bbamem.2006.02.011] [Citation(s) in RCA: 216] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2006] [Accepted: 02/11/2006] [Indexed: 11/26/2022]
Abstract
FTIR spectroscopic imaging in ATR (Attenuated Total Reflection) mode is a powerful tool for studying biomedical samples. This paper summarises recent advances in the applications of ATR-FTIR imaging to dissolution of pharmaceutical formulations and drug release. The use of two different ATR accessories to obtain chemical images of formulations in contact with water as a function of time is demonstrated. The innovative use of the diamond ATR accessory allowed in situ imaging of tablet compaction and dissolution. ATR-FTIR imaging was also applied to obtain images of the surface of skin and the spatial distribution of protein and lipid rich domains was obtained. Chemical images of cross-section of rabbit aorta were obtained using a diamond ATR accessory and the possibility of in situ imaging of arterial samples in contact with aqueous solution was demonstrated for the first time. This experiment opens an opportunity to image arterial samples in contact with solutions containing drug molecules. This approach may help in understanding the mechanisms of treatment of atherosclerosis.
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Affiliation(s)
- S G Kazarian
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK.
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31
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Boskey A, Mendelsohn R. Infrared analysis of bone in health and disease. JOURNAL OF BIOMEDICAL OPTICS 2005; 10:031102. [PMID: 16229627 DOI: 10.1117/1.1922927] [Citation(s) in RCA: 111] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Infrared spectroscopy, microspectroscopy, and microspectroscopic imaging have been used to probe the composition and physicochemical status of mineral and matrix of bone in normal and diseased tissues using a series of validated parameters that reflect quantitative and qualitative properties. In this review, emphasis is placed on changes in bone's composition and physiochemical status during osteoporosis and the impact of currently used therapeutics on these parameters, although the impact of infrared microscopy in other pathological states is briefly discussed.
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Affiliation(s)
- Adele Boskey
- Weill Medical College of Cornell University, Program in Musculoskeletal Integrity, Hospital for Special Surgery, Department of Biochemistry, New York, New York 10021, USA
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32
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Chan KLA, Kazarian SG, Mavraki A, Williams DR. Fourier transform infrared imaging of human hair with a high spatial resolution without the use of a synchrotron. APPLIED SPECTROSCOPY 2005; 59:149-155. [PMID: 15720754 DOI: 10.1366/0003702053085070] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The cross-section of a human hair has been imaged for the first time using the micro attenuated total reflection (ATR) Fourier transformed infrared (FT-IR) method in combination with a focal plane array (FPA) detector. A rigorous approach was applied to determine the spatial resolution, namely, measuring the distance over which the band absorbance changes from 95 to 5% of the maximum absorbance when passing through a sharp interface. The measured value for IR transmission was approximately 16 microm, while the value obtained using ATR imaging was approximately 5 microm. The enhanced spatial resolution achieved by this method allows the medulla of the hair (approximately 8 microm in diameter) to be imaged clearly without the need for a synchrotron source. The spatial resolution of transmission and ATR imaging is compared, and advantages of ATR imaging are discussed.
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Affiliation(s)
- K L A Chan
- Department of Chemical Engineering and Chemical Technology, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
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