Electrodeposited platinum-iridium coating improves in vivo recording performance of chronically implanted microelectrode arrays.

abstract：:Cytoxicity is an essential concern for polyethyleneimine 25 kDa (PEI 25 kDa), a widely reported, highly effective transfection agent used in gene delivery. In our recent experiments, Small molecular weight cross-linked poly(ethylene imine) by biscarbamate linkage (PEI-Bu) (Mn: 3278, Mw: 4289) can reduce target cell ap...

journal_title：Biomaterials

authors： Xiang S,Su J,Tong H,Yang F,Tong W,Yuan W,Wu F,Wang C,Jin T,Dai K,Zhang X

更新日期：2012-09-01 00:00:00

abstract：:Ex-vivo blood-brain barrier (BBB) model is of great value for studying brain function and drug development, but it is still challenging to engineer macroscale three-dimensional (3D) tissue constructs to recapitulate physiological and functional aspects of BBB. Here, we describe a delicate 3D vascularized neural constr...

journal_title：Biomaterials

authors： Yue H,Xie K,Ji X,Xu B,Wang C,Shi P

更新日期：2020-07-01 00:00:00

abstract：:Micro/nanotopographical modification of biomaterials constitutes a promising approach to direct stem cell osteogenic differentiation to promote osseointegration. In this work, titania nanotubes (NTs) 25 and 80 nm in size with the acid-etched Ti topography (AcidTi) and hierarchical hybrid micropitted/nanotubular topogr...

journal_title：Biomaterials

authors： Zhao L,Liu L,Wu Z,Zhang Y,Chu PK

更新日期：2012-03-01 00:00:00

abstract：:A number of phase separation pHEMA sponge hydrogels have been prepared based on variations in monomer contents, concentration of cross-linking agent, solvent mixture and temperature of polymerization. The loading levels and release profiles of the anti-inflammatory drug prednisolone were examined for each of the pHEMA...

journal_title：Biomaterials

authors： Lou X,Munro S,Wang S

更新日期：2004-09-01 00:00:00

abstract：:Fracture healing and fracture fixation in the context of osteoporosis is extremely difficult. To inhibit osteoclast-induced bone resorption and associated implant loosening in this pathology, we describe a local delivery strategy to delivery RNA interfering technology to bone sites to target and down-regulate osteocla...

journal_title：Biomaterials

authors： Wang Y,Tran KK,Shen H,Grainger DW

更新日期：2012-11-01 00:00:00

abstract：:Sol-gel derived porous silica carriers for the controlled release of proteins were synthesized using a room temperature process. The materials are intended to serve as both substrates for bone growth as well as to allow incorporated proteins such as growth factors to diffuse out and stimulate cell function and tissue ...

journal_title：Biomaterials

authors： Santos EM,Radin S,Ducheyne P

更新日期：1999-09-01 00:00:00

abstract：:We present a new ultrasonic technique for monitoring the entire setting process of injectable bone cement. The problem with existing standards is their subjectivity. Because of this the results are not comparable between different research groups. A strong advantage with the proposed technique is that it is non-invasi...

journal_title：Biomaterials

authors： Carlson J,Nilsson M,Fernández E,Planell JA

更新日期：2003-01-01 00:00:00

abstract：:Physicochemical features of a cell nanoenvironment exert important influence on stem cell behavior and include the influence of matrix elasticity and topography on differentiation processes. The presence of growth factors such as TGF-β and BMPs on these matrices provides chemical cues and thus plays vital role in dire...

journal_title：Biomaterials

authors： Das RK,Zouani OF

更新日期：2014-07-01 00:00:00

abstract：:Culture of seeded osteoblastic cells in three-dimensional osteoconductive scaffolds in vitro is a promising approach to produce an osteoinductive material for repair of bone defects. However, culture of cells in scaffolds sufficiently large to bridge critical-sized defects is a challenge for tissue engineers. Diffusio...

journal_title：Biomaterials

authors： Goldstein AS,Juarez TM,Helmke CD,Gustin MC,Mikos AG

更新日期：2001-06-01 00:00:00

abstract：:Bioactive glass granules were implanted in the tibiae of rabbits in order to determine the pathway of the silicon released from bioactive glass in vivo. We traced and quantified the silicon released by obtaining 24-h urine samples and blood samples for up to 7 months after implantation. Bone tissue as well as the foll...

journal_title：Biomaterials

authors： Lai W,Garino J,Ducheyne P

更新日期：2002-01-01 00:00:00

abstract：:Stress urinary incontinence (SUI) is an embarrassing problem affecting a large number of women and interfering with their quality of life. The injury or weakness of urethral supporting tissues by childbirth and aging has been considered as key factors in the development of the SUI. In this study, plasmid DNA (pDNA; en...

journal_title：Biomaterials

authors： Choi SJ,Oh SH,Kim IG,Chun SY,Lee JY,Lee JH

更新日期：2013-07-01 00:00:00

abstract：:The limited intrinsic repair capacity of articular cartilage has stimulated continuing efforts to develop tissue engineered analogues. Matrices composed of type II collagen and chondroitin sulfate (CS), the major constituents of hyaline cartilage, may create an appropriate environment for the generation of cartilage-l...

journal_title：Biomaterials

authors： Pieper JS,van der Kraan PM,Hafmans T,Kamp J,Buma P,van Susante JL,van den Berg WB,Veerkamp JH,van Kuppevelt TH

更新日期：2002-08-01 00:00:00

abstract：:It is now well accepted that the initial rapid adsorption of blood proteins to biomaterial surfaces is important in the long-term performance of the implant. Cells that interact with the implant will be reacting to a layer (single or multiple) of adsorbed protein. The parameters of importance in a study of protein ads...

journal_title：Biomaterials

authors： Chittur KK

更新日期：1998-03-01 00:00:00

abstract：:In designing and developing various biomaterials, the influence of substrate properties, like surface topography, stiffness and wettability on the cell functionality has been investigated widely. However, such study to probe into the influence of the substrate conductivity on cell fate processes is rather limited. In ...

journal_title：Biomaterials

authors： Thrivikraman G,Mallik PK,Basu B

更新日期：2013-09-01 00:00:00

abstract：:A series of mesoporous silica nanoparticles (MSNs) were synthesized using the co-structure directing method. A non-cytotoxic anionic surfactant, undec-1-en-11-yltetra(ethylene glycol) phosphate monoester surfactant (PMES), was used as a structure directing agent (SDA) together with aminopropyltrimethoxysilane that fun...

journal_title：Biomaterials

authors： Tsai CH,Vivero-Escoto JL,Slowing II,Fang IJ,Trewyn BG,Lin VS

更新日期：2011-09-01 00:00:00

abstract：:Biological surface engineering using synthetic biological materials has a great potential for advances in our understanding of complex biological phenomena. We developed a simple system to engineer biologically relevant surfaces using a combination of self-assembling oligopeptide monolayers and microcontact printing (...

journal_title：Biomaterials

authors： Zhang S,Yan L,Altman M,Lässle M,Nugent H,Frankel F,Lauffenburger DA,Whitesides GM,Rich A

更新日期：1999-07-01 00:00:00

abstract：:A series of coumarin fluorophores (1-3), each bearing a double bond conjugated quinoline unit that can undergo a Michael-type reaction with thiol-containing compounds, is reported. These systems, designed to provide so-called turn-on changes in fluorescence response when exposed to thiols, act as fluorescent chemical ...

journal_title：Biomaterials

authors： Jung HS,Han JH,Pradhan T,Kim S,Lee SW,Sessler JL,Kim TW,Kang C,Kim JS

更新日期：2012-01-01 00:00:00

abstract：:Biomedical device-associated infection is one of the most common and problematic complications faced by millions of patients worldwide. The current antibiotic therapy strategies face challenges, the most serious of which is antibiotic resistance. Studies have shown that the systemic level of interleukin 12 (IL-12) dec...

journal_title：Biomaterials

authors： Li B,Jiang B,Boyce BM,Lindsey BA

更新日期：2009-05-01 00:00:00

abstract：:Remarkable water-stimulated shape memory effect was revealed in a natural biopolymer of peacock's tail covert feathers of which the innate shape can almost be fully recovered after severe deformation by a short hydration step. The shape memory effect manifests a good stability of high recovery rate and ratio during cy...

journal_title：Biomaterials

authors： Liu ZQ,Jiao D,Zhang ZF

更新日期：2015-10-01 00:00:00

abstract：:A new thiolating reagent is used to introduce sulphur groups into denatured atelocollagen. The procedure is easy to control and applicable on a large scale. The reagent is a reactive dicarboxylic acid compound containing sulphur in the form of a disulphide functionality. It is prepared by reacting N,N'-disuccinoylcyst...

journal_title：Biomaterials

authors： Nicolas FL,Gagnieu CH

更新日期：1997-06-01 00:00:00

abstract：:Directed embryonic stem (ES) cell differentiation is a potentially powerful approach for generating a renewable source of cells for regenerative medicine. Typical in vitro ES cell differentiation protocols involve the formation of ES cell aggregate intermediates called embryoid bodies (EBs). Recently, we demonstrated ...

journal_title：Biomaterials

authors： Moeller HC,Mian MK,Shrivastava S,Chung BG,Khademhosseini A

更新日期：2008-02-01 00:00:00

abstract：:Peripherally inserted central catheters (PICCs) are hollow polymeric tubes that transport nutrients, blood and medications to neonates. To determine proper PICC placement, frequent X-ray imaging of neonates is performed. Because X-rays pose severe health risks to neonates, safer alternatives are needed. We hypothesize...

journal_title：Biomaterials

authors： Stevenson AT Jr,Reese LM,Hill TK,McGuire J,Mohs AM,Shekhar R,Bickford LR,Whittington AR

更新日期：2015-06-01 00:00:00

abstract：:Nanobubbles, as a kind of new ultrasound contrast agent (UCAs), have shown promise to penetrate tumor vasculature to allow for targeted imaging. However, their inherent physical instability is an ongoing concern that could weaken their imaging ability with ultrasound. Gas vesicles (GVs), which are genetically encoded,...

journal_title：Biomaterials

authors： Wang G,Song L,Hou X,Kala S,Wong KF,Tang L,Dai Y,Sun L

更新日期：2020-04-01 00:00:00

abstract：:A number of neurodegenerative disorders may potentially be treated by the delivery of therapeutic genes to neurons. Nonviral gene delivery systems, however, typically provide low transfection efficiency in post-mitotic differentiated neurons. To uncover mechanistic reasons for this observation, we compared gene transf...

journal_title：Biomaterials

authors： Suk JS,Suh J,Choy K,Lai SK,Fu J,Hanes J

更新日期：2006-10-01 00:00:00

abstract：:The tissue response to polyanionic collagen matrices, prepared from bovine pericardium and implanted subperiosteally in rat calvaria, was studied. The materials were implanted in 72 male rats (Rattus norvegicus, albinus, Holtzman), randomly divided into four groups: GI-MBP hydrolyzed for 24 h; GII-MBP hydrolyzed for 3...

journal_title：Biomaterials

authors： Rosa FP,Lia RC,de Souza KO,Goissis G,Marcantonio E Jr

更新日期：2003-01-01 00:00:00

abstract：:Highly fluorescent core-shell silica nanoparticles made by the modified Stöber process (C dots) are promising as tools for sensing and imaging subcellular agents and structures but will only be useful if they can be easily delivered to the cytoplasm of the subject cells. This work shows that C dots can be electrostati...

journal_title：Biomaterials

authors： Fuller JE,Zugates GT,Ferreira LS,Ow HS,Nguyen NN,Wiesner UB,Langer RS

更新日期：2008-04-01 00:00:00

abstract：:Alzheimer disease (AD) is a neurodegenerative disorder and the most common form of dementia. Histopathologically is characterized by the presence extracellular neuritic plaques and with a large number of neurons lost. In this paper, we design a new nanomaterial, graphene quantum dots (GQDs) conjugated neuroprotective ...

journal_title：Biomaterials

authors： Xiao S,Zhou D,Luan P,Gu B,Feng L,Fan S,Liao W,Fang W,Yang L,Tao E,Guo R,Liu J

更新日期：2016-11-01 00:00:00

abstract：:There are a number of drawbacks to incorporating large concentrations of barium sulfate (BaSO4) as the radiopacifier in PMMA-based bone cements for percutaneous vertebroplasty. These include adverse effects on injectability, viscosity profile, setting time, mechanical properties of the cement and bone resorption. We h...

journal_title：Biomaterials

authors： Jacobs E,Saralidze K,Roth AK,de Jong JJ,van den Bergh JP,Lataster A,Brans BT,Knetsch ML,Djordjevic I,Willems PC,Koole LH

更新日期：2016-03-01 00:00:00

abstract：:Hydrogels based on ethoxytriethyleneglycol monomethacrylate/methyl methacrylate copolymers were prepared by free radical polymerization at 70 degrees C in bulk with 2,2'-azobisisobutyronitrile as initiator. The swelling behaviour of the hydrogels was studied by immersion of the films in water and in buffered solutions...

journal_title：Biomaterials

authors： Vázquez B,Gurruchaga M,Goñi I,San Román J

更新日期：1997-04-01 00:00:00

abstract：:This paper presents for the first time a mathematical model for a mechanism of controlled drug release involving both ion exchange and transient counter diffusion of a drug and counterions. Numerical analysis was conducted to study the effect of different factors on drug release kinetics including environmental condit...

journal_title：Biomaterials

authors： Abdekhodaie MJ,Wu XY

更新日期：2008-04-01 00:00:00