1
|
Gkomoza P, Kitsou I, Koltsakidis S, Tzetzis D, Karydis-Messinis A, Zafeiropoulos NE, Gerodimou F, Kollia E, Valdramidis V, Tsetsekou A. Effect of Nanoceria Suspension Addition on the Physicochemical and Mechanical Properties of Hybrid Organic-Inorganic Hydroxyapatite Composite Scaffolds. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:1102. [PMID: 38998708 DOI: 10.3390/nano14131102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Revised: 06/24/2024] [Accepted: 06/25/2024] [Indexed: 07/14/2024]
Abstract
In the current study, the synthesis of hydroxyapatite-ceria (HAP-CeO2) scaffolds is attempted through a bioinspired chemical approach. The utilized colloidal CeO2 suspension presents antifungal activity against the Aspergillus flavus and Aspergillus fumigatus species at concentrations higher than 86.1 ppm. Three different series of the composite HAP-CeO2 suspensions are produced, which are differentiated based on the precursor suspension to which the CeO2 suspension is added and by whether this addition takes place before or after the formation of the hydroxyapatite phase. Each of the series consists of three suspensions, in which the pure ceria weight reaches 4, 5, and 10% (by mass) of the produced hydroxyapatite, respectively. The characterization showed that the 2S series's specimens present the greater alteration towards their viscoelastic properties. Furthermore, the 2S series's sample with 4% CeO2 presents the best mechanical response. This is due to the growth of needle-like HAP crystals during lyophilization, which-when oriented perpendicular to the direction of stress application-enhance the resistance of the sample to deformation. The 2S series's scaffolds had an average pore size equal to 100 μm and minimum open porosity 89.5% while simultaneously presented the lowest dissolution rate in phosphate buffered saline.
Collapse
Affiliation(s)
- Paraskevi Gkomoza
- Laboratory of Metallurgy, School of Mining & Metallurgical Engineering, National Technical University of Athens, 9 Heroon, Polytechniou Ave., 15772 Zografos, Athens, Greece
| | - Ioanna Kitsou
- Laboratory of Metallurgy, School of Mining & Metallurgical Engineering, National Technical University of Athens, 9 Heroon, Polytechniou Ave., 15772 Zografos, Athens, Greece
| | - Savvas Koltsakidis
- Digital Manufacturing and Materials Characterization Laboratory, School of Science and Technology, International Hellenic University, 14th km Thessaloniki-N. Moudania, 57001 Thermi, Thessaloniki, Greece
| | - Dimitrios Tzetzis
- Digital Manufacturing and Materials Characterization Laboratory, School of Science and Technology, International Hellenic University, 14th km Thessaloniki-N. Moudania, 57001 Thermi, Thessaloniki, Greece
| | | | | | - Foteini Gerodimou
- Laboratory of Food Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, 15771 Zografos, Athens, Greece
| | - Eleni Kollia
- Laboratory of Food Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, 15771 Zografos, Athens, Greece
| | - Vasilis Valdramidis
- Laboratory of Food Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, 15771 Zografos, Athens, Greece
| | - Athena Tsetsekou
- Laboratory of Metallurgy, School of Mining & Metallurgical Engineering, National Technical University of Athens, 9 Heroon, Polytechniou Ave., 15772 Zografos, Athens, Greece
| |
Collapse
|
2
|
Shaikh S, Gupta S, Mishra A, Sheikh PA, Singh P, Kumar A. Laser-assisted synthesis of nano-hydroxyapatite and functionalization with bone active molecules for bone regeneration. Colloids Surf B Biointerfaces 2024; 237:113859. [PMID: 38547794 DOI: 10.1016/j.colsurfb.2024.113859] [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] [Received: 01/09/2024] [Revised: 02/27/2024] [Accepted: 03/17/2024] [Indexed: 04/08/2024]
Abstract
The main goal of bone tissue engineering research is to replace the allogenic and autologous bone graft substitutes that can promote bone repair. Owing to excellent biocompatibility and osteoconductivity, hydroxyapatite is in extensive research and high demand for both medical and non-medical applications. Although various methods have been developed for the synthesis of hydroxyapatite, in the present study we have shown the use of nanosecond laser energy in the wet precipitation method of nano-hydroxyapatite (nHAP) synthesis without using ammonium solution or any other chemicals for pH maintenance. Here, the present study aimed to fabricate the nanohydroxyapatite using a nanosecond laser. The X-ray diffraction and Fourier transform infrared spectroscopy have confirmed the hydroxyapatite formation under laser irradiation in less time without aging. A transmission electron microscopy confirmed the nano size of synthesized nHAP, which is comparable to conventional nHAP. The length and width of the laser-assisted nHAP were found to be in the range of 50-200 nm and 15-20 nm, respectively, at various laser parameters. The crystallite size obtained by Debye Scherrer formulae was found to be in the range of ∼ 16-36 nm. In addition, laser-assisted nHAP based composite cryogel (nanohydroxyapatite/gelatin/collagen I) was synthesized and impregnated with bioactive molecules (bone morphogenic protein and zoledronic acid) that demonstrated significant osteogenic potential both in vitro in cell experiment and in vivo rat muscle pouch model (abdomen and tibia muscles). Dual-energy X-ray analysis, micro-CT, and histological analysis confirmed ectopic bone regeneration. Micro-CT based histomorphometry showed a higher amount (more than 10-fold) of mineralization for animal groups implanted with composite cryogels loaded with bioactive molecules compared to only composite cryogels groups. Our findings thus demonstrate a controlled and rapid synthetic method for the synthesis of nHAP with various physical, chemical, and biological properties exhibited as comparable to conventionally synthesized nHAP.
Collapse
Affiliation(s)
- Shazia Shaikh
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur 208016, India; Center for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India.
| | - Sneha Gupta
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Ankita Mishra
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Parvaiz A Sheikh
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Prerna Singh
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Ashok Kumar
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur 208016, India; Center for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India; Center for Nanosciences, Indian Institute of Technology Kanpur, Kanpur 208016, India; The Mehta Family Center for Engineering in Medicine, Indian Institute of Technology Kanpur, Kanpur 208016, India; Center of Excellence for Materials in Medicine, Gangwal School of Medical Sciences and Technology, Indian Institute of Technology Kanpur, Kanpur, UP 208016, India.
| |
Collapse
|
3
|
Belal A, Mahmoud R, Mohamed EE, Farghali A, Abo El-Ela FI, Gamal A, Halfaya FM, Khaled E, Farahat AA, Hassan AHE, Ghoneim MM, Taha M, Zaky MY. A Novel Hydroxyapatite/Vitamin B 12 Nanoformula for Treatment of Bone Damage: Preparation, Characterization, and Anti-Arthritic, Anti-Inflammatory, and Antioxidant Activities in Chemically Induced Arthritic Rats. Pharmaceuticals (Basel) 2023; 16:ph16040551. [PMID: 37111308 PMCID: PMC10143295 DOI: 10.3390/ph16040551] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 03/25/2023] [Accepted: 03/31/2023] [Indexed: 04/29/2023] Open
Abstract
The usage of nanomaterials for rheumatoid arthritis (RA) treatment can improve bioavailability and enable selective targeting. The current study prepares and evaluates the in vivo biological effects of a novel hydroxyapatite/vitamin B12 nanoformula in Complete Freund's adjuvant-induced arthritis in rats. The synthesized nanoformula was characterized using XRD, FTIR, BET analysis, HERTEM, SEM, particle size, and zeta potential. We synthesized pure HAP NPs with 71.01% loading weight percentages of Vit B12 and 49 mg/g loading capacity. Loading of vitamin B12 on hydroxyapatite was modeled by Monte Carlo simulation. Anti-arthritic, anti-inflammatory, and antioxidant effects of the prepared nanoformula were assessed. Treated arthritic rats showed lower levels of RF and CRP, IL-1β, TNF-α, IL-17, and ADAMTS-5, but higher IL-4 and TIMP-3 levels. In addition, the prepared nanoformula increased GSH content and GST antioxidant activity while decreasing LPO levels. Furthermore, it reduced the expression of TGF-β mRNA. Histopathological examinations revealed an improvement in joint injuries through the reduction of inflammatory cell infiltration, cartilage deterioration, and bone damage caused by Complete Freund's adjuvant. These findings indicate that the anti-arthritic, antioxidant, and anti-inflammatory properties of the prepared nanoformula could be useful for the development of new anti-arthritic treatments.
Collapse
Affiliation(s)
- Amany Belal
- Department of Pharmaceutical Chemistry, College of Pharmacy, Taif University, Taif 21944, Saudi Arabia
| | - Rehab Mahmoud
- Department of Chemistry, Faculty of Science, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Eman E Mohamed
- Molecular Physiology Division, Zoology Department, Faculty of Science, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Ahmed Farghali
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Fatma I Abo El-Ela
- Department of Pharmacology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Amr Gamal
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Fatma Mohamed Halfaya
- Department of Surgery, Anesthesiology and Radiology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Esraa Khaled
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Abdelbasset A Farahat
- Master of Pharmaceutical Sciences Program, California Northstate University, 9700 W Taron Dr., Elk Grove, CA 95757, USA
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Ahmed H E Hassan
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
- Medicinal Chemistry Laboratory, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Seoul 02447, Republic of Korea
| | - Mohammed M Ghoneim
- Department of Pharmacy Practice, College of Pharmacy, AlMaarefa University, Ad Diriyah 13713, Saudi Arabia
| | - Mohamed Taha
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Mohamed Y Zaky
- Molecular Physiology Division, Zoology Department, Faculty of Science, Beni-Suef University, Beni-Suef 62511, Egypt
- Department of Oncology and Department of Biomedical and Clinical Sciences, Faculty of Medicine, Linköping University, 581 83 Linköping, Sweden
| |
Collapse
|
4
|
de Souza MF, da Silva HN, Rodrigues JFB, Macêdo MDM, de Sousa WJB, Barbosa RC, Fook MVL. Chitosan/Gelatin Scaffolds Loaded with Jatropha mollissima Extract as Potential Skin Tissue Engineering Materials. Polymers (Basel) 2023; 15:polym15030603. [PMID: 36771903 PMCID: PMC9921636 DOI: 10.3390/polym15030603] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/12/2023] [Accepted: 01/17/2023] [Indexed: 01/26/2023] Open
Abstract
This work aimed to develop chitosan/gelatin scaffolds loaded with ethanolic extract of Jatropha mollissima (EEJM) to evaluate the influence of its content on the properties of these structures. The scaffolds were prepared by freeze-drying, with different EEJM contents (0-10% (w/w)) and crosslinked with genipin (0.5% (w/w)). The EEJM were characterized through High Performance Liquid Chromatography coupled to a Diode Array Detector (HPLC-DAD), and the determination of three secondary metabolites contents was accomplished. The physical, chemical and biological properties of the scaffolds were investigated. From the HPLC-DAD, six main substances were evidenced, and from the quantification of the total concentration, the condensed tannins were the highest (431.68 ± 33.43 mg·g-1). Spectroscopy showed good mixing between the scaffolds' components. Adding and increasing the EEJM content did not significantly influence the properties of swelling and porosity, but did affect the biodegradation and average pore size. The enzymatic biodegradation test showed a maximum weight loss of 42.89 within 28 days and reinforced the efficiency of genipin in crosslinking chitosan-based materials. The addition of the extract promoted the average pore sizes at a range of 138.44-227.67 µm, which is compatible with those reported for skin regeneration. All of the scaffolds proved to be biocompatible for L929 cells, supporting their potential application as skin tissue engineering materials.
Collapse
Affiliation(s)
- Matheus Ferreira de Souza
- Postgraduate Program in Materials Science and Engineering, Department of Materials Engineering, Federal University of Campina Grande, Campina Grande 58429-900, PB, Brazil
| | - Henrique Nunes da Silva
- Postgraduate Program in Materials Science and Engineering, Department of Materials Engineering, Federal University of Campina Grande, Campina Grande 58429-900, PB, Brazil
| | - José Filipe Bacalhau Rodrigues
- Postgraduate Program in Materials Science and Engineering, Department of Materials Engineering, Federal University of Campina Grande, Campina Grande 58429-900, PB, Brazil
| | - Maria Dennise Medeiros Macêdo
- Postgraduate Program in Materials Science and Engineering, Department of Materials Engineering, Federal University of Campina Grande, Campina Grande 58429-900, PB, Brazil
| | | | - Rossemberg Cardoso Barbosa
- Department of Materials Engineering, Federal University of Campina Grande, Campina Grande 58429-900, PB, Brazil
| | - Marcus Vinícius Lia Fook
- Department of Materials Engineering, Federal University of Campina Grande, Campina Grande 58429-900, PB, Brazil
- Correspondence: ; Tel.: +55-(83)-2101-1841
| |
Collapse
|
5
|
Kędzierska M, Bańkosz M, Drabczyk A, Kudłacik-Kramarczyk S, Jamroży M, Potemski P. Silver Nanoparticles and Glycyrrhiza glabra (Licorice) Root Extract as Modifying Agents of Hydrogels Designed as Innovative Dressings. Int J Mol Sci 2022; 24:ijms24010217. [PMID: 36613661 PMCID: PMC9820111 DOI: 10.3390/ijms24010217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 12/04/2022] [Accepted: 12/20/2022] [Indexed: 12/25/2022] Open
Abstract
The interest in the application of plant extracts as modifiers of polymers intended for biomedical purposes is constantly increasing. The therapeutical properties of the licorice root, including its anti-inflammatory and antibacterial activity, make this plant particularly promising. The same applies to silver nanoparticles showing antibacterial properties. Thus the main purpose of the research was to design hydrogel dressings containing both licorice root extract and nanosilver so as to obtain a system promoting wound regeneration processes by preventing infection and inflammation within the wound. The first step included the preparation of the plant extract via the solid-liquid extraction using the Soxhlet extractor and the synthesis of silver nanoparticles by the chemical reduction of silver ions using a sodium borohydride as a reducing agent. Subsequently, hydrogels were synthesized via photopolymerization and subjected to studies aiming at characterizing their sorption properties, surface morphology via scanning electron microscopy, and their impact on simulated physiological liquids supported by defining these liquids' influence on hydrogels' structures by FT-IR spectroscopy. Next, the tensile strength of hydrogels and their percentage elongation were determined. Performed studies also allowed for determining the hydrogels' wettability and free surface energies. Finally, the cytotoxicity of hydrogels towards L929 murine fibroblasts via the MTT reduction assay was also verified. It was demonstrated that developed materials showed stability in simulated physiological liquids. Moreover, hydrogels were characterized by high elasticity (percentage elongation within the range of 24-29%), and their surfaces were hydrophilic (wetting angles below 90°). Hydrogels containing both licorice extract and nanosilver showed smooth and homogeneous surfaces. Importantly, cytotoxic properties towards L929 murine fibroblasts were excluded; thus, developed materials seem to have great potential for application as innovative dressings.
Collapse
Affiliation(s)
- Magdalena Kędzierska
- Department of Chemotherapy, Medical University of Lodz, Copernicus Memorial Hospital of Lodz, 93-513 Lodz, Poland
| | - Magdalena Bańkosz
- Department of Materials Engineering, Faculty of Materials Engineering and Physics, Cracow University of Technology, 37 Jana Pawła II Av., 31-864 Krakow, Poland
| | - Anna Drabczyk
- Department of Materials Engineering, Faculty of Materials Engineering and Physics, Cracow University of Technology, 37 Jana Pawła II Av., 31-864 Krakow, Poland
- Correspondence: (A.D.); (M.J.)
| | - Sonia Kudłacik-Kramarczyk
- Department of Materials Engineering, Faculty of Materials Engineering and Physics, Cracow University of Technology, 37 Jana Pawła II Av., 31-864 Krakow, Poland
| | - Mateusz Jamroży
- Faculty of Materials Engineering and Physics, Cracow University of Technology, 37 Jana Pawła II Av., 31-864 Krakow, Poland
- Correspondence: (A.D.); (M.J.)
| | - Piotr Potemski
- Department of Chemotherapy, Medical University of Lodz, Copernicus Memorial Hospital of Lodz, 93-513 Lodz, Poland
| |
Collapse
|
6
|
Improving the Mechanical Resistance of Hydroxyapatite/Chitosan Composite Materials Made of Nanofibers with Crystalline Preferential Orientation. MATERIALS 2022; 15:ma15134718. [PMID: 35806844 PMCID: PMC9268343 DOI: 10.3390/ma15134718] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 06/29/2022] [Accepted: 06/30/2022] [Indexed: 11/17/2022]
Abstract
The stability and mechanical properties of hydroxyapatite (HAp)/Chitosan composite materials depend on the dispersion of HAp aggregates in the chitosan matrix and on the chemical interaction between them. Therefore, hexagonal cross-sectioned HAp nanofibers were produced using a microwave-assisted hydrothermal method. Glutamic acid was used to control the HAp crystal growth; thereby, nanofibers were obtained with a preferential crystalline orientation, and they were grown along the “c” axis of HAp crystal structures. This morphology exposed the (300) and (100) crystal planes on the surface, and several phosphate groups and calcium ions were also exposed; they were able to form numerous chemical interactions with the amine, hydroxyl, and carbonyl groups of chitosan. Consequently, the final mechanical resistance of the composite materials was synergistically increased. Nanofibers were mixed with commercial chitosan using a sonotrode to improve their dispersion within the biopolymer matrix and prevent migration. The HAp nanofiber/Chitosan composite materials showed higher mechanical resistance than that observed in similar materials with the same chemical composition that were made of commercial HAp powders, which were used as reference materials. The mechanical resistance under tension of the composite materials made of nanofibers was similar to that reported for cortical bone.
Collapse
|
7
|
Silingardi F, Bonvicini F, Cassani MC, Mazzaro R, Rubini K, Gentilomi GA, Bigi A, Boanini E. Hydroxyapatite Decorated with Tungsten Oxide Nanoparticles: New Composite Materials against Bacterial Growth. J Funct Biomater 2022; 13:jfb13030088. [PMID: 35893456 PMCID: PMC9326691 DOI: 10.3390/jfb13030088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 06/13/2022] [Accepted: 06/22/2022] [Indexed: 01/26/2023] Open
Abstract
The availability of biomaterials able to counteract bacterial colonization is one of the main requirements of functional implants and medical devices. Herein, we functionalized hydroxyapatite (HA) with tungsten oxide (WO3) nanoparticles in the aim to obtain composite materials with improved biological performance. To this purpose, we used HA, as well as HA functionalized with polyacrilic acid (HAPAA) or poly(ethylenimine) (HAPEI), as supports and polyvinylpyrrolidone (PVP) as stabilizing agent for WO3 nanoparticles. The number of nanoparticles loaded on the substrates was determined through Molecular Plasma-Atomic Emission Spectroscopy and is quite small, so it cannot be detected through X-ray diffraction analysis. It increases from HAPAA, to HA, to HAPEI, in agreement with the different values of zeta potential of the different substrates. HRTEM and STEM images show the dimensions of the nanoparticles are very small, less than 1 nm. In physiological solution HA support displays a greater tungsten cumulative release than HAPEI, despite its smaller loaded amount. Indeed, WO3 nanoparticles-functionalized HA exhibits a remarkable antibacterial activity against the Gram-positive Staphylococcus aureus in absence of cytotoxicity, which could be usefully exploited in the biomedical field.
Collapse
Affiliation(s)
- Francesca Silingardi
- Department of Chemistry ‘‘Giacomo Ciamician”, University of Bologna, Via Selmi 2, 40126 Bologna, Italy; (F.S.); (K.R.); (A.B.)
| | - Francesca Bonvicini
- Department of Pharmacy and Biotechnology, University of Bologna, Via Massarenti 9, 40138 Bologna, Italy; (F.B.); (G.A.G.)
| | - Maria Cristina Cassani
- Department of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
- Correspondence: (M.C.C.); (E.B.)
| | - Raffaello Mazzaro
- Department of Phisics and Astronomy “A. Righi”, University of Bologna, Viale Berti Pichat 6/2, 40138 Bologna, Italy;
| | - Katia Rubini
- Department of Chemistry ‘‘Giacomo Ciamician”, University of Bologna, Via Selmi 2, 40126 Bologna, Italy; (F.S.); (K.R.); (A.B.)
| | - Giovanna Angela Gentilomi
- Department of Pharmacy and Biotechnology, University of Bologna, Via Massarenti 9, 40138 Bologna, Italy; (F.B.); (G.A.G.)
| | - Adriana Bigi
- Department of Chemistry ‘‘Giacomo Ciamician”, University of Bologna, Via Selmi 2, 40126 Bologna, Italy; (F.S.); (K.R.); (A.B.)
| | - Elisa Boanini
- Department of Chemistry ‘‘Giacomo Ciamician”, University of Bologna, Via Selmi 2, 40126 Bologna, Italy; (F.S.); (K.R.); (A.B.)
- Correspondence: (M.C.C.); (E.B.)
| |
Collapse
|
8
|
Synthesis of Natural Nano-Hydroxyapatite from Snail Shells and Its Biological Activity: Antimicrobial, Antibiofilm, and Biocompatibility. MEMBRANES 2022; 12:membranes12040408. [PMID: 35448378 PMCID: PMC9025656 DOI: 10.3390/membranes12040408] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 03/25/2022] [Accepted: 04/04/2022] [Indexed: 02/04/2023]
Abstract
Hydroxyapatite nanoparticles (HAn) have been produced as biomaterial from biowaste, especially snail shells (Atactodea glabrata). It is critical to recycle the waste product in a biomedical application to overcome antibiotic resistance as well as biocompatibility with normal tissues. Moreover, EDX, TEM, and FT-IR analyses have been used to characterize snail shells and HAn. The particle size of HAn is about 15.22 nm. Furthermore, higher inhibitory activity was observed from HAn than the reference compounds against all tested organisms. The synthesized HAn has shown the lowest MIC values of about 7.8, 0.97, 3.9, 0.97, and 25 µg/mL for S. aureus, B. subtilis, K. pneumonia, C. albicans, and E. coli, respectively. In addition, the HAn displayed potent antibiofilm against S. aureus and B. subtilis. According to the MTT, snail shell and HAn had a minor influence on the viability of HFS-4 cells. Consequently, it could be concluded that some components of waste, such as snail shells, have economic value and can be recycled as a source of CaO to produce HAn, which is a promising candidate material for biomedical applications.
Collapse
|
9
|
Mohseni M, Shokrollahi P, Barzin J. Impact of Supramolecular Interactions on Delivery of Dexamethasone from a Physical Network of Gelatin/ZnHAp Composite Scaffold. Int J Pharm 2022; 615:121520. [DOI: 10.1016/j.ijpharm.2022.121520] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 01/06/2022] [Accepted: 01/23/2022] [Indexed: 10/19/2022]
|
10
|
Structural Changes of Hydroxylapatite during Plasma Spraying: Raman and NMR Spectroscopy Results. COATINGS 2021. [DOI: 10.3390/coatings11080987] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Functional osseoconductive coatings based on hydroxylapatite (HAp) and applied preferentially by atmospheric plasma spraying to medical implant surfaces are a mainstay of modern implantology. During contact with the hot plasma jet, HAp particles melt incongruently and undergo complex dehydration and decomposition reactions that alter their phase composition and crystallographic symmetry, and thus, the physical and biological properties of the coatings. Surface analytical methods such as laser-Raman and nuclear magnetic resonance (NMR) spectroscopies are useful tools to assess the structural changes of HAp imposed by heat treatment during their flight along the hot plasma jet. In this contribution, the controversial information is highlighted on the existence or non-existence of oxyapatite, i.e., fully dehydrated HAp as a thermodynamically stable compound.
Collapse
|