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Shi W, Hatori S, Noda D, Yamada I, Tagaya M. Direct Immobilization of Folic Acid Molecules on Hydroxyapatite Nanoparticles with Substitution and Coordination Phenomena. ACS Biomater Sci Eng 2024. [PMID: 39230397 DOI: 10.1021/acsbiomaterials.4c01146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/05/2024]
Abstract
We successfully synthesized folic acid (FA) immobilized hydroxyapatite (HA) nanoparticles without using a mediative reagent (e.g., silane coupling agent), and the immobilization states were evaluated and discussed. The HA nanoparticles with higher biocompatibility have two different planes, namely, c- and m-planes. These plane surfaces are rich in phosphate groups (P-site) and Ca2+ ions (C-site), respectively. We suggested that during the synthesis of the HA nanoparticles, the P-site substitution and C-site coordination with the addition of organic molecules containing -COO- ions can occur. Thus, it is possible to simultaneously immobilize two molecules to one HA nanoparticle. In this study, we successfully synthesized FA-immobilized HA nanoparticles by P-site substitution and C-site coordination reactions, which were named as substitution type and coordination type. In the substitution type, when FA was reacted with HA during the nucleation stage, the PO43- ions of HA decreased as the FA ratio of coverage surface area increased, and the crystalline phase was changed significantly from the Ca deficient HA to the carbonated HA phase. Accordingly, it was indicated that FA was immobilized on HA by the P-site substitution. In the coordination type, since FA was reacted with HA after the completion of crystal growth, the crystalline phase was changed slightly as the FA ratio of coverage surface area increased, indicating that FA was immobilized on HA by the C-site coordination. From the above, we controlled the FA immobilization states on the HA nanoparticles by the P-site substitution and the C-site coordination through the FA addition timing in the synthesis. Since the -COO- ions in FA could be selectively substituted with the P-site in HA, it is possible to directly coordinate the foreign organic molecules to the Ca2+ ions in HA. Therefore, the immobilization technique of this study is expected to achieve two different drug molecules with diagnosis and therapy functions (i.e., theranostics) on one nanoparticle.
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Affiliation(s)
- Wanyu Shi
- Department of Materials Science and Bioengineering, Graduate School of Engineering, Nagaoka University of Technology, Kamitomioka 1603-1, Nagaoka, Niigata 940-2188, Japan
- Research Fellow of the Japan Society for the Promotion of Science (DC), 5-3-1 Koji-machi, Chiyoda-ku, Tokyo 102-0083, Japan
| | - Shoma Hatori
- Department of Materials Science and Bioengineering, Graduate School of Engineering, Nagaoka University of Technology, Kamitomioka 1603-1, Nagaoka, Niigata 940-2188, Japan
| | - Daichi Noda
- Department of Materials Science and Bioengineering, Graduate School of Engineering, Nagaoka University of Technology, Kamitomioka 1603-1, Nagaoka, Niigata 940-2188, Japan
- Research Fellow of the Japan Society for the Promotion of Science (DC), 5-3-1 Koji-machi, Chiyoda-ku, Tokyo 102-0083, Japan
| | - Iori Yamada
- Department of Materials Science and Bioengineering, Graduate School of Engineering, Nagaoka University of Technology, Kamitomioka 1603-1, Nagaoka, Niigata 940-2188, Japan
| | - Motohiro Tagaya
- Department of Materials Science and Bioengineering, Graduate School of Engineering, Nagaoka University of Technology, Kamitomioka 1603-1, Nagaoka, Niigata 940-2188, Japan
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Novella I, Rupaedah B, Eddy DR, Suryana, Irwansyah FS, Noviyanti AR. The Influence of Polyvinyl Alcohol Porogen Addition on the Nanostructural Characteristics of Hydroxyapatite. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6313. [PMID: 37763589 PMCID: PMC10532944 DOI: 10.3390/ma16186313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 09/06/2023] [Accepted: 09/18/2023] [Indexed: 09/29/2023]
Abstract
Hydroxyapatite (HA) is a porous material widely developed in various research fields because of its high biodegradability, biocompatibility, and low toxicity. In this research, HA was synthesized using a hydrothermal method with chicken eggshells as a calcium source and various concentrations of polyvinyl alcohol as a porogen (2.5%, 5.0%, and 7.5% by wt). The structure and morphology of HA were determined by X-ray diffraction (XRD) and scanning electron microscope (SEM), respectively. HA was obtained with varying concentrations of polyvinyl alcohol (PVA) porogen according to Inorganic Crystal Structure Database (ICSD) standard. Based on analysis using a refinement method, changes in unit cell parameters (cell volume and lattice strain) of HA synthesized using PVA porogen compared to the standard, the chi square (χ2) and index of R values were relatively low, validating the acceptable of the data. In addition, HA [Ca10(PO4)6(OH)2] with hexagonal structure and the P63/m space group was successfully obtained. Morphological analysis of HA by SEM found that HA has a spherical shape, and the porosity of HA increases with increasing concentrations of polyvinyl alcohol. The highest porosity was obtained with an addition of 5.0 wt% of PVA porogen (HAP3), reaching 69.53%.
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Affiliation(s)
- Indrika Novella
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Padjajaran University, Jl. Raya Bandung-Sumedang Km. 21, Bandung 45363, Indonesia; (I.N.); (D.R.E.); (F.S.I.)
| | - Bedah Rupaedah
- Research Center for Applied Microbiology, National Research and Innovation Agency, Jl. Raya Jakarta-Bogor Km. 46, Bogor 16911, Indonesia;
| | - Diana Rakhmawaty Eddy
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Padjajaran University, Jl. Raya Bandung-Sumedang Km. 21, Bandung 45363, Indonesia; (I.N.); (D.R.E.); (F.S.I.)
| | - Suryana
- Department of Biology, Faculty of Mathematics and Natural Sciences, Padjajaran University, Jl. Raya Bandung-Sumedang Km. 21, Bandung 45363, Indonesia;
| | - Ferli Septi Irwansyah
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Padjajaran University, Jl. Raya Bandung-Sumedang Km. 21, Bandung 45363, Indonesia; (I.N.); (D.R.E.); (F.S.I.)
- Department of Chemistry Education, UIN Sunan Gunung Djati, Bandung Jl. A.H. Nasution No. 105, Bandung 40614, Indonesia
| | - Atiek Rostika Noviyanti
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Padjajaran University, Jl. Raya Bandung-Sumedang Km. 21, Bandung 45363, Indonesia; (I.N.); (D.R.E.); (F.S.I.)
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Rajabiyan A, Vaccaro L, Ahmady AZ. Nano-Hydroxyapatite Isolation and Characterisation of Echinometra mathaei from the Persian Gulf. Trop Life Sci Res 2023; 34:243-254. [PMID: 38144377 PMCID: PMC10735264 DOI: 10.21315/tlsr2023.34.2.12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 12/20/2022] [Indexed: 12/26/2023] Open
Abstract
The study focuses on the preparation and characterisation (physicochemical and mechanical) of hydroxyapatite [Ca10(PO4)6(OH)2] (HA) from sea urchin, Echinometra mathaei. Therefore, nano-sized HA prepared from sea urchin shells were collected from beaches of the Persian Gulf in Iran. Sea urchin shells were found a source of calcium carbonate in the form of aragonite (calcite) that crystallised in an organic matrix. HA is one of the polymers used in coating the nanoparticles extracted from various sources. The calcined aragonite converted to nanosized hydroxyapatite powder by chemical reaction with orthophosphoric acid while maintaining stoichiometry, Ca/P = 1.667 at 80°C. To determine the purity of the nano-hydroxyapatite (nHA) numerous analytical procedures were used. Fourier transforms infrared spectroscopy (FTIR) confirmed the presence of the peak of 961 cm-1 is related to the symmetric tensile band of the P-O bond, and the peak of 1038 cm-1 and 1091 cm-1 is related to the tensile solid absorption of the PO4 as functional groups of nHA. The nanocrystalline HA can be observed from the SEM images. Thermogravimetric analysis (TGA-DTA) demonstrates the thermal stability of nHA powder. The results show successful isolation and characterisation study of this crucial nano-material shows it is valuable in biomedical applications, particularly in bone tissue engineering. Indeed, its fabrication is easy and economical.
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Affiliation(s)
- Ali Rajabiyan
- Marine Pharmaceutical Science Research Centre, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Luigi Vaccaro
- Laboratory of Green S.O.C. – Dipartimento di Chimica, biologia e Biotecnologie, Università degli Studi di Perugia, Via Elce di Sotto 8, 06123, Perugia, Italy
| | - Amanollah Zarei Ahmady
- Nanotechnology Research Centre, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Department of Medicinal Chemistry, Faculty of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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Dănilă RȘ, Dumitru I, Ignat M, Pui A. CoFe 2O 4@HaP as Magnetic Heterostructures for Sustainable Wastewater Treatment. MATERIALS (BASEL, SWITZERLAND) 2023; 16:2594. [PMID: 37048887 PMCID: PMC10095400 DOI: 10.3390/ma16072594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/22/2023] [Accepted: 03/22/2023] [Indexed: 06/19/2023]
Abstract
The aim of this study was to synthesize a CoFe2O4@HaP nanocomposite (HaP-Hydroxyapatite) through the coprecipitation method in aqueous solution, with the purpose of using it in adsorption processes for the removal of Congo Red dye from aqueous solutions. Fourier Transform Infrared Spectroscopy (FT-IR) was used to characterize the synthesized material, identifying absorption bands specific to the functional groups of cobalt ferrite (Fe-O and Co-O at 603 and 472 cm-1) and hydroxyapatite PO43- at 1035, 962, 603 and 565 cm-1. Powder X-ray diffraction confirmed the cubic spinel structure of cobalt ferrite (S.G Fd-3m) and the hexagonal structure of hydroxyapatite (S.G P63/m). The nanocomposite's crystallite size was calculated to be 57.88 nm. Nitrogen adsorption/desorption isotherms and BET specific surface area measurements were used to monitor textural parameters, revealing an increase in specific BET surface area when cobalt ferrite nanoparticles (15 m2/g) were introduced into the hydroxyapatite heterostructure (34 m2/g). Magnetic properties were investigated by interpreting hysteresis curves in the ±10 kOe range, with the nanocomposite showing a saturation magnetization of 34.83 emu/g and a coercivity value of 0.03 kOe. The adsorption capacity of the CoFe2O4@HaP nanocomposite is up to 15.25 mg/g and the pseudo-second-order kinetic model (Type 1) fits the data with a high correlation coefficient of 0.9984, indicating that the chemical adsorption determines the rate-determining step of the process. The obtained nanocomposite is confirmed by the analyses, and the absorption measurements demonstrate that it can be utilized to degrade Congo Red dye.
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Affiliation(s)
- Raluca-Ștefania Dănilă
- Faculty of Chemistry, University of Alexandru Ioan Cuza, Boulevard Carol I No. 11, 700506 Iasi, Romania
| | - Ioan Dumitru
- Faculty of Physics, University of Alexandru Ioan Cuza, Boulevard Carol I No. 11, 700506 Iasi, Romania
| | - Maria Ignat
- Faculty of Chemistry, University of Alexandru Ioan Cuza, Boulevard Carol I No. 11, 700506 Iasi, Romania
| | - Aurel Pui
- Faculty of Chemistry, University of Alexandru Ioan Cuza, Boulevard Carol I No. 11, 700506 Iasi, Romania
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Bartenschlager S, Dankerl P, Chaudry O, Uder M, Engelke K. BMD accuracy errors specific to phantomless calibration of CT scans of the lumbar spine. Bone 2022; 157:116304. [PMID: 34973497 DOI: 10.1016/j.bone.2021.116304] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 12/17/2021] [Accepted: 12/17/2021] [Indexed: 01/22/2023]
Abstract
Opportunistic screening using existing CT images may be a new strategy to identify subjects at increased risk for osteoporotic fracture. Low bone mineral density (BMD) is a key parameter but routine clinical CT scans do not include a calibration phantom to calculate BMD from the measured CT values. An alternative is internal or phantomless calibration, which is based on the CT values of air and of internal tissues of the subject such as blood, muscle or adipose tissue. However, the composition and as a consequence the CT values of these so-called internal calibration materials vary among subjects, which introduces additional BMD accuracy errors compared to phantom based calibration. The objective of this study was to quantify these accuracy errors and to identify optimum combinations of internal calibration materials (IM) for BMD assessments in opportunistic screening. Based on the base material decomposition theory we demonstrate how BMD can be derived from the CT values of the internal calibration materials. 121 CT datasets of the lumbar spine form postmenopausal women were used to determine the population variance of blood assessed in the aorta or the inferior vena cava, skeletal muscle of the erector spinae or psoas, subcutaneous adipose tissue (SAT) and air. The corresponding standard deviations were used for error propagation to determine phantomless calibration related BMD accuracy errors. Using a CT value of 150 HU, a typical value of trabecular bone, simulated BMD accuracy errors for most IM combinations containing air as one of the two base materials were below 5% or 6 mg/cm3. The lowest errors were determined for the combination of blood and air (<2 mg/cm3). The combination of blood and skeletal muscle resulted in higher errors (>10.5% or >12 mg/cm3) and is not recommended. Due to possible age-related differences in tissue composition, the selection of IMs is suggested to be adapted according to the measured subject. In younger subjects without significant aortic calcifications, air and blood of the aorta may be the best combination whereas in elderly subjects, air and SAT (error of 4%) may be preferable. The use of skeletal muscle as one of the two IMs is discouraged, in particular in elderly subjects because of varying fatty infiltration. A practical implementation of the internal calibration with different IM pairs confirmed the theoretical results. In summary, compared to a phantom based calibration the phantomless approach used for opportunistic screening creates additional BMD accuracy errors of 2% or more, dependent on the used internal reference tissues. The impact on fracture prediction still must be evaluated.
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Affiliation(s)
- Stefan Bartenschlager
- Department of Medicine 3, FAU University Erlangen-Nürnberg and Universitätsklinikum, Erlangen, Germany; Institute of Medical Physics, FAU University Erlangen-Nürnberg, Erlangen, Germany.
| | - Peter Dankerl
- Institute of Radiology, FAU University Erlangen-Nürnberg and Universitätsklinikum, Erlangen, Germany
| | - Oliver Chaudry
- Department of Medicine 3, FAU University Erlangen-Nürnberg and Universitätsklinikum, Erlangen, Germany; Institute of Medical Physics, FAU University Erlangen-Nürnberg, Erlangen, Germany
| | - Michael Uder
- Institute of Radiology, FAU University Erlangen-Nürnberg and Universitätsklinikum, Erlangen, Germany
| | - Klaus Engelke
- Department of Medicine 3, FAU University Erlangen-Nürnberg and Universitätsklinikum, Erlangen, Germany; Institute of Medical Physics, FAU University Erlangen-Nürnberg, Erlangen, Germany; Bioclinica Inc, Hamburg, Germany
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Maia MT, Luz ÉPCG, Andrade FK, Rosa MDF, Borges MDF, Arcanjo MRA, Vieira RS. Advances in Bacterial Cellulose/Strontium Apatite Composites for Bone Applications. POLYM REV 2021. [DOI: 10.1080/15583724.2021.1896543] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
| | | | - Fabia Karine Andrade
- Department of Chemical Engineering, Federal University of Ceara, Fortaleza, Brazil
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Kupikowska-Stobba B, Kasprzak M. Fabrication of nanoparticles for bone regeneration: new insight into applications of nanoemulsion technology. J Mater Chem B 2021; 9:5221-5244. [PMID: 34142690 DOI: 10.1039/d1tb00559f] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Introducing synthetic bone substitutes into the clinic was a major breakthrough in the regenerative medicine of bone. Despite many advantages of currently available bone implant materials such as biocompatiblity and osteoconductivity, they still suffer from relatively poor bioactivity, osteoinductivity and osteointegration. These properties can be effectively enhanced by functionalization of implant materials with nanoparticles such as osteoinductive hydroxyapatite nanocrystals, resembling inorganic part of the bone, or bioactive polymer nanoparticles providing sustained delivery of pro-osteogenic agents directly at implantation site. One of the most widespread techniques for fabrication of nanoparticles for bone regeneration applications is nanoemulsification. It allows manufacturing of nanoscale particles (<100 nm) that are injectable, 3D-printable, offer high surface-area-to-volume-ratio and minimal mass transport limitations. Nanoparticles obtained by this technique are of particular interest for biomedical engineering due to fabrication procedures requiring low surfactant concentrations, which translates into reduced risk of surfactant-related in vivo adverse effects and improved biocompatibility of the product. This review discusses nanoemulsion technology and its current uses in manufacturing of nanoparticles for bone regeneration applications. In the first section, we introduce basic concepts of nanoemulsification including nanoemulsion formation, properties and preparation methods. In the next sections, we focus on applications of nanoemulsions in fabrication of nanoparticles used for delivery of drugs/biomolecules facilitating osteogenesis and functionalization of bone implants with special emphasis on biomimetic hydroxyapatite nanoparticles, synthetic polymer nanoparticles loaded with bioactive compounds and bone-targeting nanoparticles. We also highlight key challenges in formulation of nanoparticles via nanoemulsification and outline potential further improvements in this field.
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Affiliation(s)
- Barbara Kupikowska-Stobba
- ŁUKASIEWICZ Research Network - Institute of Ceramics and Building Materials, Ceramic and Concrete Division in Warsaw, Department of Biomaterials, Postępu 9, 02-677, Warsaw, Poland.
| | - Mirosław Kasprzak
- ŁUKASIEWICZ Research Network - Institute of Ceramics and Building Materials, Ceramic and Concrete Division in Warsaw, Department of Biomaterials, Postępu 9, 02-677, Warsaw, Poland.
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