journal
MENU ▼
Read by QxMD icon Read
search

Materials Science & Engineering. C, Materials for Biological Applications

journal
https://www.readbyqxmd.com/read/28183678/cu-2-co-2-and-cr-3-doping-of-a-calcium-phosphate-cement-influences-materials-properties-and-response-of-human-mesenchymal-stromal-cells
#1
Martha Schamel, Anne Bernhardt, Mandy Quade, Claudia Würkner, Uwe Gbureck, Claus Moseke, Michael Gelinsky, Anja Lode
The application of biologically active metal ions to stimulate cellular reactions is a promising strategy to accelerate bone defect healing. Brushite-forming calcium phosphate cements were modified with low doses of Cu(2+), Co(2+) and Cr(3+). The modified cements released the metal ions in vitro in concentrations which were shown to be non-toxic for cells. The release kinetics correlated with the solubility of the respective metal phosphates: 17-45 wt.-% of Co(2+) and Cu(2+), but <1 wt.-% of Cr(3+) were released within 28days...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28183677/hierarchical-micro-nano-structured-ti6al4v-surface-topography-via-two-step-etching-process-for-enhanced-hydrophilicity-and-osteoblastic-responses
#2
Byeong-Seok Moon, Sungwon Kim, Hyoun-Ee Kim, Tae-Sik Jang
Hierarchical micro-nano (HMN) surface structuring of dental implants is a fascinating strategy for achieving fast and mechanically stable fixation due to the synergetic effect of micro- and nano-scale surface roughness with surrounding tissues. However, the introduction of a well-defined nanostructure on a microstructure having complex surface geometry is still challenging. As a means of fabricating HMN surface on Ti6Al4V-ELI, target-ion induced plasma sputtering (TIPS) was used onto a sand-blasted, large-grit and acid-etched substrate...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28183676/tizrnbtamo-high-entropy-alloy-designed-for-orthopedic-implants-as-cast-microstructure-and-mechanical-properties
#3
Shao-Ping Wang, Jian Xu
Combining the high-entropy alloy (HEA) concept with property requirement for orthopedic implants, we designed a Ti20Zr20Nb20Ta20Mo20 equiatomic HEA. The arc-melted microstructures, compressive properties and potentiodynamic polarization behavior in phosphate buffer solution (PBS) were studied in detail. It was revealed that the as-cast TiZrNbTaMo HEA consisted of dual phases with bcc structure, major bcc1 and minor bcc2 phases with the lattice parameters of 0.3310nm and 0.3379nm, respectively. As confirmed by nanoindentation tests, the bcc1 phase is somewhat harder and stiffer than the bcc2 phase...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28183675/mechanistic-investigation-on-microbial-toxicity-of-nano-hydroxyapatite-on-implant-associated-pathogens
#4
K Baskar, T Anusuya, G Devanand Venkatasubbu
The use of atomic scale inorganic nanoparticles (NPs) to fight against pathogenic microorganisms is a recent trend in biomedical area which overcomes the limitations of organic compounds in terms of stability, shelf life and bioactivity. One such Calcium phosphate based biomaterial is hydroxyapatite (HA), considered as potential bioactive compound with excellent biocompatibility, osteointegrity and biodegradability. Osteomyelitis, the implant associated infection, is the major problem worldwide responsible for the majority of implant failure cases...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28183674/albumin-coatings-by-alternating-current-electrophoretic-deposition-for-improving-corrosion-resistance-and-bioactivity-of-titanium-implants
#5
Sarah Höhn, Annabel Braem, Bram Neirinck, Sannakaisa Virtanen
Although Ti alloys are generally regarded to be highly corrosion resistant, inflammatory conditions following surgery can instigate breakdown of the TiO2 passivation layer leading to an increased metal ion release. Furthermore proteins present in the surrounding tissue will readily adsorb on a titanium surface after implantation. In this paper alternating current electrophoretic deposition (AC-EPD) of bovine serum albumin (BSA) on Ti6Al4V was investigated in order to increase the corrosion resistance and control the protein adsorption capability of the implant surface...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28183673/attenuation-of-the-in-vitro-neurotoxicity-of-316l-ss-by-graphene-oxide-surface-coating
#6
Nishat Tasnim, Alok Kumar, Binata Joddar
A persistent theme in biomaterials research comprises of surface engineering and modification of bare metallic substrates for improved cellular response and biocompatibility. Graphene Oxide (GO), a derivative of graphene, has outstanding chemical and mechanical properties; its large surface to volume ratio, ease of surface modification and processing make GO an attractive coating material. GO-coatings have been extensively studied as biosensors. Further owing to its surface nano-architecture, GO-coated surfaces promote cell adhesion and growth, making it suitable for tissue engineering applications...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28183672/in-vitro-biocompatibility-of-a-ferrimagnetic-glass-ceramic-for-hyperthermia-application
#7
Oana Bretcanu, Marta Miola, Claudia L Bianchi, Ida Marangi, Roberta Carbone, Ingrid Corazzari, Mario Cannas, Enrica Verné
Ferrimagnetic glass-ceramics containing magnetite crystals were developed for hyperthermia applications of solid neoplastic tissue. The present work is focused on in vitro evaluation of the biocompatibility of these materials, before and after soaking in a simulated body fluid (SBF). X-ray diffraction, scanning electron microscopy, atomic absorption spectrophotometry, X-ray photoelectron spectrometry and pH measurements were employed in glass-ceramic characterisation. The free-radical mediated reactivity of the glass-ceramic was evaluated by Electron Paramagnetic Resonance (EPR) spin trapping...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28183671/effect-of-phosphorus-precursors-on-the-structure-of-bioactive-calcium-phosphate-silicate-systems
#8
Katalin Sinkó, Anikó Meiszterics, János Rohonczy, Balázs Kobzi, Shiro Kubuki
The main aim of this work was to synthesize calcium phosphate silicate bioceramics by a low energy-consuming sol-gel method applying various phosphorous precursors (triethyl phosphate, phosphoric acid, and ammonium hydrogen phosphate). The investigations concentrated on the influence of phosphorous initial compounds on the bond and crystalline structures and the material quality. The application of the alkoxide and inorganic P-precursors results in considerably different textures. The inorganic PO4-containing precursors lead to sol formations...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28183670/influence-of-different-grained-powders-and-pellets-made-of-niobium-and-ti-42nb-on-human-cell-viability
#9
Jana Markhoff, Markus Weinmann, Christian Schulze, Rainer Bader
Nowadays, biomaterials can be used to maintain or replace several functions of the human body if necessary. Titanium and its alloys, i.e. Ti6Al4V are the most common materials (70 to 80%) used for structural orthopedic implants due to their unique combination of good mechanical properties, corrosion resistance and biocompatibility. Addition of β-stabilizers, e.g. niobium, can improve the mechanical properties of such titanium alloys further, simultaneously offering excellent biocompatibility. In this in vitro study, human osteoblasts and fibroblasts were cultured on different niobium specimens (Nb Amperit, Nb Ampertec), Nb sheets and Ti-42Nb (sintered and 3D-printed by selective laser melting, SLM) and compared with forged Ti6Al4V specimens...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28183669/multi-metal-assessment-on-biofilm-formation-in-offshore-environment
#10
Muthukumar Krishnan, Hans-Uwe Dahms, Palanichamy Seeni, Subramanian Gopalan, Vignesh Sivanandham, Kim Jin-Hyoung, Rathinam Arthur James
Eight metal and non-metal coupons were exposed to seawater in offshore platform laboratory on biofilm formation in seven days of every month interval time for one year period. Among metal coupons, the highest mean heterotrophic biofilm bacteria population (HBBP) ranges were observed in mild steel (MS) coupon (33.03 to 40.00 [×10(4)] CFUscm(-2)) and lowest in copper (Cu) coupon (3.0 to 5.1 [×10(4)] CFUscm(-2)). Non-metal coupons show, highest mean HBBP ranges in glass (GL) coupon (29.6 to 66.0 [×10(4)] CFUscm(-2)) and lowest in polyvinyl chloride (PVC) coupon (34...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28183668/effect-of-equal-channel-angular-pressing-on-in-vitro-degradation-of-lae442-magnesium-alloy
#11
Peter Minárik, Eva Jablonská, Robert Král, Jan Lipov, Tomáš Ruml, Carsten Blawert, Branislav Hadzima, František Chmelík
Effect of processing by equal channel angular pressing (ECAP) on the degradation behaviour of extruded LAE442 magnesium alloy was investigated in a 0.1M NaCl solution, Kirkland's biocorrosion medium (KBM) and Minimum Essential Medium (MEM), both with and without 10% of foetal bovine serum (FBS). Uniform degradation of as extruded and ECAP processed samples in NaCl solution was observed, nevertheless higher corrosion resistance was found in the latter material. The increase of corrosion resistance due to ECAP was observed also after 14-days immersion in all media used...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28183667/synergistic-acceleration-in-the-osteogenic-and-angiogenic-differentiation-of-human-mesenchymal-stem-cells-by-calcium-silicate-graphene-composites
#12
Ming-You Shie, Wei-Hung Chiang, I-Wen Peter Chen, Wen-Yi Liu, Yi-Wen Chen
Recent exciting findings of the biological interactions of graphene materials have shed light on potential biomedical applications of graphene-containing composites. Owing to the superior mechanical properties and low coefficient of thermal expansion, graphene has been widely used in the reinforcement of biocomposites. In the present study, various ratios of graphene (0.25wt%, 0.5wt% and 1.0wt%) were reinforced into calcium silicate (CS) for bone graft application. Results show that the graphene was embedded in the composites homogeneously...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28183666/fabrication-of-electrospun-hpgl-scaffolds-via-glycidyl-methacrylate-cross-linker-morphology-mechanical-and-biological-properties
#13
Fernando José Costa Baratéla, Olga Zazuco Higa, Esdras Duarte Dos Passos, Alvaro Antonio Alencar de Queiroz
Electrospinning is a suitable method to produce scaffolds composed of nanoscale to microscale fibers, which are comparable to the extracellular matrix (ECM). Hyperbranched polyglycerol (HPGL) is a highly biocompatible polyether polyol potentially useful for the design of fibrous scaffolds mimicking the ECM architecture. However, scaffolds developed from HPGL have poor mechanical properties and morphological stability in the aqueous environments required for tissue engineering applications. This work reports the production of stable electrospun HPGL scaffolds (EHPGLS) using glycidyl methacrylate (GMA) as cross-linker to enhance the water stability and mechanical property of electrospun HPGL...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28183665/degradation-in-the-fatigue-crack-growth-resistance-of-human-dentin-by-lactic-acid
#14
Santiago Orrego, Huakun Xu, Dwayne Arola
The oral cavity frequently undergoes localized changes in chemistry and level of acidity, which threatens the integrity of the restorative material and supporting hard tissue. The focus of this study was to evaluate the changes in fatigue crack growth resistance of dentin and toughening mechanisms caused by lactic acid exposure. Compact tension specimens of human dentin were prepared from unrestored molars and subjected to Mode I opening mode cyclic loads. Fatigue crack growth was achieved in samples from mid- and outer-coronal dentin immersed in either a lactic acid solution or neutral conditions...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28183664/graphene-oxide-and-creatine-phosphate-disodium-dual-template-directed-synthesis-of-go-hydroxyapatite-and-its-application-in-drug-delivery
#15
Chengli Yao, Jinmiao Zhu, Anjian Xie, Yuhua Shen, Hongying Li, Bin Zheng, Yanxin Wei
In this study, graphene oxide and creatine phosphate disodium acted as dual template and was employed to synthesize graphene oxide (GO)/hydroxyapatite (HA) hybrids as drug carriers. In the rapid preparation of GO/HA hybrids, creatine phosphate disodium salt (CPDS) severed as a phosphorus source and graphene oxide acted as a template in aqueous solution. The effects of the reaction temperature, time and pH value of the aqueous solution on the morphology of the product were investigated. The result showed that the hydrolysis of CPDS under hydrothermal condition played an important role in the formation of hierarchical hollow GO/HA hybrids...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28183663/using-gold-nanostars-modified-pencil-graphite-electrode-as-a-novel-substrate-for-design-a-sensitive-and-selective-dopamine-aptasensor
#16
Rasoul Pourtaghavi Talemi, Seyed Mehdi Mousavi, Hossein Afruzi
For the first time, gold nanostars (GNS) were applied for electrostatic and covalent immobilizing a thiol modified Dopamine aptamer on the pencil graphite electrode and signal amplification. Dopamine aptamer was immobilized on the gold nanostars through electrostatic interaction between negatively charged phosphate groups of aptamer and positively charged gold nanostars and AuS well known covalent interaction. In the presence of Dopamine in the test solution, the charge transfer resistance (RCT) on the electrode surface increased with the increase of the Dopamine concentration due to specific interaction between Dopamine aptamer and Dopamine molecules, which made a barrier for electrons and inhibited the electron-transfer...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28183662/milling-properties-of-low-temperature-sintered-zirconia-blocks-for-dental-use
#17
Ting-Hsun Lan, Chau-Hsiang Wang, Ker-Kong Chen, Moo-Chin Wang, Huey-Er Lee
To investigate the milling properties of different yttria-tetragonal zirconia polycrystalline (Y-TZP) block materials by applying a dental computer numerical control (CNC) milling center. Low temperature sintering zirconia block denoted by KMUZ (experimental) with two commercial zirconia blocks for T block made in Taiwan and a G block made in Germany were compared for the milling properties. Seventy-two specimens were milled using the same CNC milling center, and properties were evaluated by measuring the weight loss (g), milling time (s), margin integrity (%) and broken diameter (μm)...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28183661/a-microstructural-study-of-the-degradation-and-calcium-release-from-hydroxyapatite-calcium-oxide-ceramics-made-by-infiltration
#18
Qinghao Zhang, Eva Schmelzer, Jörg C Gerlach, Ian Nettleship
Hydroxyapatite pellets, partially densified in a low-temperature heat treatment, were infiltrated with calcium nitrate solution followed by in-situ precipitation of Ca(OH)2 and CaCO3. The infiltrated bodies were then densified to high relative density and the calcium carbonate transformed to calcium oxide during sintering and resulted in biphasic hydroxyapatite-CaO ceramics. This work investigated the influence of the infiltration on surface morphology, weight change, and microstructural-level degradation caused by exposure to saline at pH=7...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28183660/anticancer-activity-of-biologically-synthesized-silver-and-gold-nanoparticles-on-mouse-myoblast-cancer-cells-and-their-toxicity-against-embryonic-zebrafish
#19
Rajan Ramachandran, Chandran Krishnaraj, Allur Subramaniyan Sivakumar, Palaniappan Prasannakumar, V K Abhay Kumar, Kwan Seob Shim, Chul-Gyu Song, Soon-Il Yun
The aim of this study was to evaluate the anticancer activity of bioinspired silver nanoparticles (AgNPs) and gold nanoparticles (AuNPs) against mouse myoblast cancer cells (C2C12). Both AgNPs and AuNPs were biologically synthesized using Spinacia oleracea Linn., aqueous leaves extract. UV-Vis. spectrophotometer, high resolution-transmission electron microscopy (HR-TEM), field emission-scanning electron microscopy (FE-SEM) and X-ray diffraction (XRD) studies supported the successful synthesis of AgNPs and AuNPs...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28183659/basic-evaluation-of-typical-nanoporous-silica-nanoparticles-in-being-drug-carrier-structure-wettability-and-hemolysis
#20
Jing Li, Yingyu Guo
Herein, the present work devoted to study the basic capacity of nanoporous silica nanoparticles in being drug carrier that covered structure, wettability and hemolysis so as to provide crucial evaluation. Typical nanoporous silica nanoparticles that consist of nanoporous silica nanoparticles (NSN), amino modified nanoporous silica nanoparticles (amino-NSN), carboxyl modified nanoporous silica nanoparticles (carboxyl-NSN) and hierachical nanoporous silica nanoparticles (hierachical-NSN) were studied. The results showed that their wettability and hemolysis were closely related to structure and surface modification...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
journal
journal
42150
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"