Article
Materials Science, Ceramics
Natalia Bulina, Olga B. Vinokurova, Igor Yu. Prosanov, Alexander M. Vorobyev, Konstantin B. Gerasimov, Irina A. Borodulina, Artyom Pryadko, Vladimir V. Botvin, Maria A. Surmeneva, Roman A. Surmenev
Summary: Hydroxyapatite (HA) is a biocompatible material commonly used in biomedical applications, but it lacks bioactivity and antibacterial properties. This study demonstrates a soft mechanochemical method of synthesizing bioactive HA with strontium and/or magnesium ion substitutions. The resulting materials were characterized using various techniques and it was found that magnesium substitution reduces thermal stability, while strontium substitution does not. The study highlights the importance of considering the low thermal stability of cosubstituted HA during the manufacturing of medical devices.
CERAMICS INTERNATIONAL
(2022)
Article
Pharmacology & Pharmacy
Gurdyal Singh, Ravinder Pal Singh
Summary: This study presents the co-substitution of strontium and sulphate into hydroxyapatite structure through microwave synthesis to obtain nanopowders with potential for antibacterial and drug delivery applications, showcasing their multifunctional therapeutic potential.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Antonia Ressler, Tomislav Ivankovic, Bruno Polak, Irena Ivanis, Marin Kovac, Inga Urlic, Irina Hussainova, Hrvoje Ivankovic
Summary: Hydroxyapatite (HAp) has bioactive properties that aid in bone regeneration. This study investigates the substitution of Sr2+ and Ag+ ions to enhance the physico-chemical and bioactive properties of HAp, specifically for osseointegration and antibacterial activity in treating traumatic bone injuries. The results show successful substitution of Ca2+ with Sr2+ and Ag+ ions, as confirmed by elemental mapping. The zeta-potential of the substituted HAp decreases with increasing substitution degree, and Ag/Sr-co-substituted HAp exhibits higher absorption capacity for bovine serum albumin. The substituted HAp also demonstrates antibacterial activity against Staphylococcus aureus and Escherichia coli, without cytotoxicity towards human cells.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Maximilian Goeckeler, Cornelius M. Berger, Maximilian Purcel, Ralf Bergstraesser, Arndt-Peter Schinkel, Martin Muhler
Summary: In this study, carbon black was functionalized through gas-phase oxidation using nitric acid vapor at 150 degrees C, and the decomposition mechanisms of oxygen-containing surface groups were analyzed through temperature-programmed desorption (TPD) and temperature-programmed reduction (TPR) experiments. The increase in duration of HNO3 functionalization led to an enrichment of acidic surface groups, with desorbed H2O originating from chemisorbed water bound to carboxylic acid groups and condensation reactions of carboxylic acids and phenols. Additionally, the selective reduction of phenols and carbonyls by H2 during TPR resulted in the appearance of a new CO2 evolution peak at 575 degrees C, indicating the hydrolysis of anhydrides and lactones.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Ceramics
L. Stipniece, S. Wilson, J. M. Curran, R. Chen, K. Salma-Ancane, P. K. Sharma, B. J. Meenan, A. R. Boyd
Summary: This study synthesized hydroxyapatite and Sr-substituted hydroxyapatite powders with varying levels of Sr inclusion. It was found that higher Sr content in SrHAp directly promoted the maturation of osteoblasts into osteocytes compared to hydroxyapatite.
CERAMICS INTERNATIONAL
(2021)
Article
Astronomy & Astrophysics
W. M. Farrell, P. Prem, O. J. Tucker, D. M. Hurley, B. A. Cohen, M. Benna
Summary: This study models the expected local exosphere created by water outgassing from a lunar lander plume deposit. It finds that water molecules with a desorption activation energy greater than 0.7 eV are retained until later local times, resulting in a lingering exosphere emitted from the lander deposit region.
Article
Chemistry, Applied
Martin Hayes, Ronan Bellabarba, Xavier Baucherel, Javad Tabatabaei
Summary: A series of studies demonstrate how the technique of methanol adsorption and desorption can provide useful technical information in an industrial setting, supporting the selection of catalyst candidates and investigating reduced performance. The studies show how methanol can inform on the surface and catalytic performance of materials in selective oxidations, and how the technique can help understand defects in industrially manufactured products.
TOPICS IN CATALYSIS
(2021)
Article
Engineering, Environmental
Dagne Bayih Adamu, Lemma Teshome Tufa, Jaebeom Lee, Enyew Zereffa, Teshome Abdo Segne, Mohd Hasmizam Razali
Summary: This study presents a facile synthesis of bismuth and iron co-doped hydroxyapatite nanomaterials for high-performance fluoride ions adsorption. The nanomaterials exhibited excellent fluoride ion adsorption performance, as confirmed by batch adsorption experiments. The synthesized material showed a chemical process of fluoride uptake forming a monolayer, with homogenous surface. The proposed defluoridation mechanisms were electrostatic interaction and ion exchange. The ease of synthesis and the attractive fluoride adsorption performance make this nanomaterial promising for water treatment and environmental remediation applications.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Michael E. Floto, Ryan A. Ciufo, Sungmin Han, C. Buddie Mullins
Summary: Experimental evidence shows that adsorbed hydrogen has different effects on CO dissociation for cobalt nanoparticles supported on SiO2 versus cobalt film supported on SiO2. The preference for CO dissociation to follow hydrogen-assisted dissociation mechanism on FCC cobalt and step-edges, while direct dissociation mechanism is preferred on HCP cobalt, can be explained by the nature of cobalt deposited by physical vapor deposition. These results are consistent with previous theoretical findings.
Article
Biotechnology & Applied Microbiology
Elena Marcello, Muhammad Maqbool, Rinat Nigmatullin, Mark Cresswell, Philip R. Jackson, Pooja Basnett, Jonathan C. Knowles, Aldo R. Boccaccini, Ipsita Roy
Summary: To combat the rising threat of microbial resistance to antibiotics, this study focused on the development of a novel polymer-matrix composite material with antibacterial properties through the incorporation of selenium and strontium-containing HA. The composite samples exhibited strong antibacterial activity against both Gram-positive and Gram-negative bacteria, making them promising candidates for applications in bone healing and tissue engineering.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Engineering, Biomedical
Zhenyu Zhong, Xiaodan Wu, Yifan Wang, Mengdie Li, Yan Li, XuLong Liu, Xin Zhang, Ziyang Lan, Jianglin Wang, Yingying Du, Shengmin Zhang
Summary: Ion-doped hydroxyapatite (HA) can provide a favorable osteo-immune microenvironment and promote osteogenic differentiation of bone marrow mesenchymal stem cells. This biomaterial design concept holds potential for cutting-edge bone regeneration research.
BIOACTIVE MATERIALS
(2022)
Article
Chemistry, Physical
Takafumi Ishii, Jun-ichi Ozaki
Summary: By studying the hydrogen desorption profiles of carbon materials, the spatial distribution of their edge sites can be revealed. Activated carbons, carbon blacks, and rGOs exhibit uniform distribution of edge hydrogen, while graphite, high-temperature treated carbon, and CNTs have heterogeneous distribution.
Article
Biochemistry & Molecular Biology
Muhammad Maqbool, Qaisar Nawaz, Muhammad Atiq Ur Rehman, Mark Cresswell, Phil Jackson, Katrin Hurle, Rainer Detsch, Wolfgang H. Goldmann, Asma Tufail Shah, Aldo R. Boccaccini
Summary: In this study, selenium and strontium were substituted into hydroxyapatite to enhance the antimicrobial activity of biomaterials. The results showed that the Se-Sr-HA samples exhibited excellent antibacterial properties and the co-substitution of strontium offset the cytotoxic effect of selenium, improving the biological properties of HA. The prepared samples are considered a suitable choice for antibacterial coatings and bone filler applications.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Chemistry, Inorganic & Nuclear
Natalia Bulina, Olga B. Vinokurova, Natalia Eremina, Igor Y. Prosanov, Vyacheslav R. Khusnutdinov, Marina Chaikina
Summary: The study demonstrates that single-phase hydroxyapatite doped with zinc or copper ions can be obtained through solid-phase mechanochemical synthesis within 30 minutes, with dopant ions mainly occupying the sites of calcium ions. The research findings can be applied in the production of medical bioresorbable items and coatings with antibacterial properties.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Chemistry, Physical
Olga N. N. Makshakova, Marat R. R. Gafurov, Margarita A. A. Goldberg
Summary: This article reports the possibility of co-localization of CO32- and Mg2+ ions in the structure of hydroxyapatite (HA) using density functional theory calculations. The analysis reveals the formation of a favorable complex when these ions interact with each other. The theoretical results are in good agreement with experimental data.
Article
Engineering, Biomedical
Nayana Tusamda Wakhloo, Sebastian Anders, Florent Badique, Melanie Eichhorn, Isabelle Brigaud, Tatiana Petithory, Maxime Vassaux, Jean-Louis Milan, Jean-Noel Freund, Juergen Ruehe, Patricia M. Davidson, Laurent Pieuchot, Karine Anselme
Article
Materials Science, Biomaterials
Lucas de Araujo Bastos Santana, Paulo Henrique Oliveira Junior, Chantal Damia, Debora dos Santos Tavares, Euler Araujo dos Santos
Summary: The study investigated the effects of MgO and ZnO on the bioactivity and osteoblastic behavior of bioactive glasses. MgO reduced glass transition and crystallization temperatures, inhibited bioactivity but promoted cell adhesion and proliferation. On the other hand, ZnO inhibited bioactivity, decreased cell adhesion and proliferation, but increased ALP activity compared to control.
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
(2021)
Article
Electrochemistry
Aline R. Doria, Ronaldo S. Silva, Paulo H. Oliveira Junior, Euler A. dos Santos, Silvana Mattedi, Peter Hammer, Giancarlo R. Salazar-Banda, Katlin I. B. Eguiluz
ELECTROCHIMICA ACTA
(2020)
Article
Anatomy & Morphology
Mario R. P. da Silva, Robert S. Matos, Charles S. Estevam, Samuel B. Santos, Felipe M. A. da Silva, Igor G. P. P. de Sousa, Henrique D. da Fonseca Filho, Luis E. Almeida
Summary: The study focused on the surface characteristics of kefir biofilms associated with Maytenus rigidaMart. extract. It was found that the plant extract successfully incorporated into the exopolysaccharide matrix of the biofilm, with triterpenes being the main chemical components. Additionally, the addition of the plant extract increased the crystallinity of the biofilms. The morphology analysis revealed a prevalence of lactobacilli at low concentrations of the extract and more observed yeasts at high concentrations, while biofilms with less extract showed higher adhesion and wettability.
MICROSCOPY RESEARCH AND TECHNIQUE
(2021)
Article
Multidisciplinary Sciences
Pablo Rougerie, Laurent Pieuchot, Rafaela Silva dos Santos, Julie Marteau, Maxence Bigerelle, Pierre-Francois Chauvy, Marcos Farina, Karine Anselme
SCIENTIFIC REPORTS
(2020)
Article
Polymer Science
Ana Chor, Raquel Pires Goncalves, Andrea Machado Costa, Marcos Farina, Arnaud Ponche, Lys Sirelli, Gautier Schrodj, Simon Gree, Leonardo Rodrigues de Andrade, Karine Anselme, Marcos Lopes Dias
Review
Chemistry, Multidisciplinary
Pablo Rougerie, Rafaela Silva dos Santos, Marcos Farina, Karine Anselme
Summary: The review focuses on the evaluation of cell behavior on substrates with controlled topographies, highlighting the importance of surface topographies in bone engineering and tissue homeostasis. It discusses the interaction between osteoblasts and different substrates, aiming to improve osseointegration processes and enhance bone repair through understanding cell-surface interactions and surface topographies.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Mechanical
Julie Marteau, Karine Anselme, Laurent Pieuchot, Pierre-Francois Chauvy, Maxence Bigerelle
Summary: The study thoroughly characterized sinusoidal surfaces with different periods and amplitudes, showing good characteristics such as low microroughness, waviness, and high shape regularity. The surfaces exhibited a very good noise-to-signal ratio, making them suitable for examining the topography effect on functionality in various fields.
SURFACE TOPOGRAPHY-METROLOGY AND PROPERTIES
(2021)
Article
Materials Science, Ceramics
Silmara C. Santos, Katharina G. Spaniol, Nikolas E. Chaves-Silva, Roberta P. M. Fernandes, Debora S. Tavares, Wilson Acchar, Euler A. dos Santos
Summary: The study aimed to produce CuO-containing bioactive glass/PVA membranes with osteogenic and antibacterial properties for guided bone regeneration. The composite membranes showed ability to form an apatite layer in simulated body fluid, improved osteoblastic proliferation, and higher damage to bacteria. These membranes have low swelling rate, important surface bioactivity, and low degradation over time, meeting the basic requirements for GBR barriers while effectively controlling bacterial growth.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Chemistry, Analytical
Morgana N. G. dos Reis, Antonio S. Ramos Neto, Vanessa M. Vasconcelos, Aline R. Doria, Gessica O. S. Santos, Euler A. dos Santos, Katlin I. B. Eguiluz, Giancarlo R. Salazar-Banda
Summary: In this study, ruthenium-based oxide anodes were prepared using an ionic liquid (IL) solvent and conventional polymeric precursor method. Results showed that IL method significantly reduced charge transfer resistance, improved stability, and enhanced electrocatalytic performance of the anodes.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Tatiana Petithory, Laurent Pieuchot, Ludovic Josien, Arnaud Ponche, Karine Anselme, Laurent Vonna
Summary: The efficiency of murine macrophages to internalize silica nanoparticles was studied, revealing two size-dependent mechanisms of internalization and a delay in internalization that increases with decreasing particle size, with 35 nm particles not internalized during a 12-hour incubation period.
Article
Chemistry, Multidisciplinary
Walid Baaziz, Corneliu Ghica, Jefferson Cypriano, Fernanda Abreu, Karine Anselme, Ovidiu Ersen, Marcos Farina, Jacques Werckmann
Summary: The study reveals a double organization of magnetosomes, relatively perpendicular to each other, and shows that the nanocrystals are in fact maghemite in a wild species of coccus-type bacterium.
Article
Polymer Science
Ana Chor, Christina Maeda Takiya, Marcos Lopes Dias, Raquel Pires Goncalves, Tatiana Petithory, Jefferson Cypriano, Leonardo Rodrigues de Andrade, Marcos Farina, Karine Anselme
Summary: The study shows that electrospun PLGA membranes have good biocompatibility and can promote the healing of oral ulcers, mimicking the extracellular matrix and promoting the flow of nutrients for cells.
Review
Chemistry, Multidisciplinary
Barbara Schamberger, Ricardo Ziege, Karine Anselme, Martine Ben Amar, Michal Bykowski, Andre P. G. Castro, Amaia Cipitria, Rhoslyn A. Coles, Rumiana Dimova, Michaela Eder, Sebastian Ehrig, Luis M. Escudero, Myfanwy E. Evans, Paulo R. Fernandes, Peter Fratzl, Liesbet Geris, Notburga Gierlinger, Edouard Hannezo, Ales Iglic, Jacob J. K. Kirkensgaard, Philip Kollmannsberger, Lucja Kowalewska, Nicholas A. Kurniawan, Ioannis Papantoniou, Laurent Pieuchot, Tiago H. V. Pires, Lars D. Renner, Andrew O. Sageman-Furnas, Gerd E. Schroder-Turk, Anupam Sengupta, Vikas R. Sharma, Antonio Tagua, Caterina Tomba, Xavier Trepat, Sarah L. Waters, Edwina F. Yeo, Andreas Roschger, Cecile M. Bidan, John W. C. Dunlop
Summary: Surface curvature plays an important role in biological systems, from cell membranes to tissues and organs. Experimental and theoretical investigations have supported the relevance of surface curvature in biology. This review provides an introduction to the key concepts of surface curvature in biological systems and discusses the challenges in measuring it. The review also highlights the response of cells, tissues, and organisms to curvature, as well as the interplay between the distribution of morphogens or micro-organisms and the emergence of curvature.
ADVANCED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Camila Miranda Fonseca Duarte, Silmara Caldas Santos, Luana Barbosa da Cruz, Wilson Acchar, Euler Araujo dos Santos
Summary: The aim of this study was to evaluate the changes in surface energy caused by the insertion of CuO in 58S glass using the Washburn capillary rise method, and its implications for bioactivity. The presence of CuO decreased surface wettability, leading to nonuniform apatite formation.
MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS
(2022)
